10-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-K

(Mark One)

x ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the fiscal year ended December 31, 2013

or

¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from                     to                     

Commission file number: 1-15259

ARGO GROUP INTERNATIONAL HOLDINGS, LTD.

(Exact name of Registrant as specified in its charter)

Bermuda	98-0214719
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification Number)
110 Pitts Bay Road Pembroke HM08 Bermuda	P.O. Box HM 1282 Hamilton HM FX Bermuda
(Address of principal executive offices)	(Mailing address)

(441) 296-5858

(Registrant’s telephone number, including area code)

Securities registered pursuant to Section 12(b) of the Act:

Title of Security	Name of Each Exchange on Which Registered
Common Stock, par value of $1.00 per share	NASDAQ Global Select Market

Securities registered pursuant to Section 12(g) of the Act: None

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.    Yes  x    No  ¨

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.    Yes  ¨    No  x

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes  x    No  ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Website, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    Yes  x    No    ¨

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K (§229.405 of this chapter) is not contained herein, and will not be contained, to the best of the registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K.  x

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer	x	Accelerated filer	¨
Non-accelerated filer	¨	Smaller reporting company	¨

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act).    Yes  ¨    No  x

As of June 30, 2013, the aggregate market value of the common stock held by non-affiliates was approximately $1,118.1 million.

As of February 21, 2014, the Registrant had 26,507,046 shares of common stock outstanding (less treasury shares).

DOCUMENTS INCORPORATED BY REFERENCE

Part III: Excerpts from Argo Group International Holdings, Ltd.’s Proxy Statement for the Annual Meeting of Shareholders to be held on May 6, 2014

ARGO GROUP INTERNATIONAL HOLDINGS, LTD.

Annual Report on Form 10-K

For the Year Ended December 31, 2013

TABLE OF CONTENTS

			Page
PART I
Item	1.	Business	2
Item	1A.	Risk Factors	17
Item	1B.	Unresolved Staff Comments	40
Item	2.	Properties	40
Item	3.	Legal Proceedings	40
Item	4.	Mine Safety Disclosure	40
PART II
Item	5.	Market for Registrant’s Common Equity, Related Shareholder Matters and Issuer Purchases of Equity Securities	41
Item	6.	Selected Financial Data	44
Item	7.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	44
Item	7A.	Quantitative and Qualitative Disclosures about Market Risk	73
Item	8.	Financial Statements and Supplementary Data	75
Item	9.	Changes in and Disagreements with Accountants on Accounting and Financial Disclosure	75
Item	9A.	Controls and Procedures	75
Item	9B.	Other Information	76
PART III
Item	10.	Directors, Executive Officers and Corporate Governance	77
Item	11.	Executive Compensation	77
Item	12.	Security Ownership of Certain Beneficial Owners and Management and Related Shareholder Matters	77
Item	13.	Certain Relationships and Related Transactions and Director Independence	78
Item	14.	Principal Accounting Fees and Services	78
PART IV
Item	15.	Exhibits, Financial Statement Schedules	78

Forward Looking Statements

Certain statements in this document are “forward-looking statements” as that term is defined in the Private Securities Litigation Reform Act of 1995 and are made pursuant to the safe harbor provisions of that act. Some of the forward-looking statements can be identified by the use of forward-looking words such as “believes”, “expects”, “potential”, “continued”, “may”, “will”, “should”, “seeks”, “approximately”, “predicts”, “intends”, “plans”, “estimates”, “anticipates” or the negative version of those words or other comparable words. The forward-looking statements are based on the current expectations of Argo Group International Holdings, Ltd. (“Argo Group,” “we” or the “Company”) and our beliefs concerning future developments and their potential effects on Argo Group. There can be no assurance that actual developments will be those anticipated by Argo Group. Actual results may differ materially as a result of significant risks and uncertainties including but not limited to:

• changes in the pricing environment including those due to the cyclical nature of the insurance and reinsurance industry;

• increased competition;

• the adequacy of our projected loss reserves including;

• development of claims that varies from that which was expected when loss reserves were established;

• adverse legal rulings which may impact the liability under insurance and reinsurance contracts beyond that which was anticipated when the reserves were established;

• development of new theories related to coverage which may increase liabilities under insurance and reinsurance contracts beyond that which were anticipated when the loss reserves were established;

• reinsurance coverage being other than what was anticipated when the loss reserves were established;

• changes to regulatory and tax conditions and legislation;

• natural and/or man-made disasters, including terrorist acts;

• the inability to secure reinsurance;

• the inability to collect reinsurance recoverables;

• a downgrade in our financial strength ratings;

• changes in interest rates;

• changes in the financial markets that impact investment income and the fair market values of our investments;

• changes in asset valuations;

• failure to execute information technology strategies;

• failure to execute expense reductions;

• inability to successfully execute our mergers and acquisitions growth strategy; and

• other risks detailed in this Form 10-K or that may be detailed in other filings with the Securities and Exchange Commission.

These risks and uncertainties are discussed in greater detail in Item 1A, “Risk Factors.” We undertake no obligation to publicly update any forward-looking statements.

1

PART I

Item 1. Business

Business Overview

Argo Group International Holdings, Ltd. (“Argo Group,” “we” or the “Company”) is an international underwriter of specialty insurance and reinsurance products in the property and casualty market. We target niches where we can develop a leadership position and where we believe we will generate superior underwriting profits. Our growth has been achieved both organically through an operating strategy focused on disciplined underwriting and as a result of strategic acquisitions.

Following is a summary organizational chart for Argo Group:

Business Segments and Products

For the year ended December 31, 2013, Argo Group’s operations included four ongoing business segments: Excess and Surplus Lines, Commercial Specialty, International Specialty and Syndicate 1200. In addition to the four main business segments, we have a Run-off Lines segment for products we no longer underwrite. For discussion of the operating results of each business segment, please refer to Item 7 “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and Note 16, “Segment Information” in the Notes to the Consolidated Financial Statements.

Excess and Surplus Lines (“E&S”). Excess and Surplus lines carriers focus on risks that the standard (admitted) market is unwilling or unable to underwrite. The standard market’s limited appetite for such coverage is often driven by the insured’s unique risk characteristics, the perils involved, the nature of the business, and/or the insured’s loss experience. Excess and Surplus lines carriers are able to underwrite these risks with more flexible policy terms at unregulated premium rates on a non-admitted basis. Non-admitted carriers, while approved, are not licensed in the states where they underwrite and, therefore, are subject to less regulation. By contrast, admitted carriers are licensed by states and are subject to all of the regulations and requirements of those states.

In 2013, our E&S business segment consisted of two operating platforms: Colony Specialty and Argo Pro. While focused primarily on non-admitted business, each of these operations may also underwrite certain classes of business on an admitted basis for risks that otherwise meet our underwriting standards.

Colony Specialty underwrites primary and excess casualty, property, automobile and professional liability coverage for hard to place risks and/or distressed businesses that typically fall outside of the standard insurance market’s risk appetite. This business is underwritten through six business units: Casualty, Transportation, Specialty Property, Contract, Environmental and Allied Medical. Through these units Colony Specialty provides coverage to a broad group of commercial enterprises including contractors, manufacturers, distributors, property owners, retailers, restaurants, environmental consultants and contractors, and smaller medical facilities within the social services, miscellaneous healthcare and long-term care segments.

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Argo Pro, which is our U.S.-only mid-market professional lines platform, provides a broad portfolio of errors and omissions and management liability products for our wholesale and retail distribution partners. Argo Pro offers customized coverage on a primary and excess basis for risks on both an admitted and non-admitted basis, targeting commercial and select financial institution risks in the middle market and upper middle market segments. Our underwriting focus provides risk management solutions for accountants, architects and engineers, commercial crime, directors and officers, employment practices, fiduciary, lawyers, miscellaneous professionals, technology, privacy and security.

Commercial Specialty. This segment provides property, casualty and surety coverages designed to meet the specialized insurance needs of businesses within certain well-defined markets. It targets business classes and industries with distinct risk profiles that can benefit from specially designed insurance programs, tailored loss control and expert claims handling. This segment serves its targeted niche markets with a narrowly focused underwriting profile and an understanding of the businesses it serves. In 2013, our Commercial Specialty segment consisted of the following risk-bearing business units: Argo Insurance, Rockwood Casualty Insurance Company (“Rockwood”), Commercial Programs, Argo Surety, Trident and ARIS Title Insurance Corporation (“ARIS”). In addition, we operate a variety of non-risk-bearing agency and brokerage operations that generate fee income under the Alteris brand. Most of the Alteris businesses operate as managing general agents (“MGA”). MGAs usually have the authority to bind insurance contracts of companies with whom they have appointments. Alteris units have underwriting authority for third party carriers as well as for certain Argo Group companies.

The core operations of Argo Insurance consist of Grocery, Restaurants, Fabricare for dry cleaners, and other Specialty Retail. Argo Insurance provides property, liability, workers compensation, auto, and umbrella coverage throughout the United States.

Rockwood is a specialty underwriter of workers compensation for the mining industry. It also underwrites business coverage for small commercial businesses including office, retail operations, light manufacturing, services, and restaurants. Approximately 54% of its premiums are written in Pennsylvania where it is the largest workers compensation insurer of independent coalmines. Rockwood underwrites policies on both a large deductible basis and on a guaranteed cost basis for smaller commercial accounts. In addition, Rockwood provides general liability, commercial automobile and artisan contractor packages, as well as coverage for pollution liability, umbrella liability and surety to support its core clients’ other mining and mining-related exposures. These supporting lines of business represented approximately 14% of Rockwood’s gross written premiums in 2013.

Argo Surety offers surety products to a diverse range of U.S. businesses operating in numerous industries. The focus of Argo Surety is to deliver high-quality surety credit solutions to businesses that must satisfy various eligibility conditions in order to conduct commerce, such as licensure requirements promulgated by government statute or regulation, counterparty conditions found in private or public construction projects or satisfactory performance of contracted services. Surety products are commonly grouped into two broad categories referred to as commercial bonds and contract bonds. Commercial bonds are generally required of businesses that guarantee their compliance with regulations and statutes, or the payment and performance assurance for various forms of contractual obligations, or the completion of services. Contract bonds are typically third-party performance, payment or maintenance guarantees associated with construction projects. Argo Surety targets multiple industries including construction (general, trade and service contractors), manufacturing, transportation, energy (coal, oil and gas and waste), industrial equipment, technology, retail, public utilities, and healthcare.

Trident provides primary insurance products and risk management solutions for small to intermediate-sized public sector entities, such as counties, municipalities, public schools and other local government units and special districts. Its product lines include general liability, automobile liability, automobile physical damage, property, inland marine, crime, public official’s liability, educator’s legal liability, employment practices, law enforcement liability and workers compensation coverage.

Alteris focuses on specialty programs and alternative risks solutions for selected niche markets, operating in 2013 through the following units: Alteris Public Risk Solutions (“APRS”), Alteris Alternative Risk Solutions (“AARS”) and Strategic Markets. APRS serves larger individual entities and group risks (pools) within the public sector, using both traditional and alternative approaches. AARS provides unbundled alternative risk structures supporting both carriers and program managers through a

broad spectrum of products and services. Strategic Markets provides insurance programs and risk solutions to a variety of niche markets including specialty wheels-based businesses, wineries and public water and sewer districts.

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International Specialty. This segment includes business units that underwrite insurance and reinsurance risks worldwide through the broker market, specializing in specialty property catastrophe reinsurance and excess casualty and professional insurance. These businesses operate as Argo Re, the Casualty and Professional Lines unit of Argo Insurance in Bermuda and Argo Seguros in Brazil.

Argo Re underwrites short-tail reinsurance lines exposed to property catastrophe risks. Argo Re focuses on underwriting property catastrophe excess of loss reinsurance for a relatively small number of cedents whose accounts are well known to our underwriters. Argo Re will also underwrite property per risk and pro rata reinsurance on a select basis. Reinsurance underwritten by Argo Re covers underlying exposures that are located throughout the world, including the United States. Property catastrophe reinsurance generally covers claims arising from large catastrophic events such as hurricanes, windstorms, hailstorms, earthquakes, volcanic eruptions, fires, industrial explosions, freezes, riots, floods and other man-made or natural disasters. In addition to its primary location in Bermuda, Argo Re originates business through its affiliates worldwide.

The Casualty and Professional Lines unit of our Argo Insurance division underwrites on behalf of Argo Re and is managed from Bermuda. This unit serves the needs of global clients for coverage in the following lines: general and products liability, directors and officer’s liability, errors and omissions liability, and employment practices liability for global clients.

Argo Seguros is our property and casualty insurance company based in Sao Paolo, Brazil, which is focused on serving that country’s domestic commercial insurance market. Argo Seguros provides a broad range of commercial property, casualty and specialty coverages. Its primary lines of business are Cargo and Marine, Property and Engineering, Financial Lines and Motor.

Syndicate 1200. The Syndicate 1200 segment is focused on underwriting worldwide property, specialty and non-U.S. liability insurance on behalf of one underwriting syndicate, under the Lloyd’s of London global franchise. The segment’s business platform is based in London. Syndicate 1200 obtains its underwriting capital from a variety of sources and seeks to maintain a balance between capital managed on behalf of Argo Group and capital managed on behalf of third parties. The sources of the underwriting capital for the Syndicate 1200 segment include our interest provided by Argo, third party capital participants referred to as trade capital providers and third party capital attributable to individual members referred to as Names and Other Capital. Trade capital providers participate on a quota share basis or directly through the syndicate, assuming 100% of their contractual participation in the syndicate results with such results settled on a year of account basis. The flexibility in the sources of capital allows us to manage underwriting exposure over the insurance cycle. Our economic participation in the syndicate varies by year of account based on our risk appetite and third level participation. Syndicate 1200 earns a return on the underwriting capital that is provided by Argo Group and fee income earned from the management of third party capital.

Syndicate 1200’s worldwide property division concentrates mainly on underwriting short-tail risks, with an emphasis on commercial properties that are also exposed to catastrophes and other man-made or natural disasters. In underwriting the property portfolio, exposures are diversified geographically and by peril in order to manage the risks assumed and maximize return. The division maintains an opportunistic approach to underwriting and attempts to identify and respond to opportunities in territories and classes of business as they arise. Syndicate 1200’s liability division underwrites non-U.S. professional indemnity, international general liability, financial institutions and legal expense, medical malpractice, international casualty treaty, and directors and officers insurance. Argo International’s specialty division underwrites cargo, energy and yachts and hull insurance, while the aerospace division underwrites space and aviation risks.

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Lloyd’s currently operates in over 200 countries and territories, and we currently underwrite in 147 of these countries. Lloyd’s business is often underwritten on a syndicated basis across the insurance market. Argo International is the lead underwriter on approximately 41% of the business it underwrites.

Run-off Lines. Run-off Lines segment includes outstanding liabilities associated with discontinued lines previously underwritten by our insurance subsidiaries, such as those arising from liability policies dating back to the 1960s, 1970s and into the 1980s, risk management policies underwritten by a business unit that has since been sold to a third party, and other legacy accounts previously underwritten by our reinsurance subsidiaries.

Marketing and Distribution

We provide products and services to well defined niche markets. We use our capital strength and the Argo Group brands to cross-market the products offered by each of our segments among our other operating platforms and divisions. We offer our distribution partners tailored, innovative solutions for managing risk using the full range of products and services we have available.

Excess and Surplus Lines. Colony Specialty distributes its products through a network of appointed wholesale agents and brokers specializing in excess and surplus lines and certain targeted admitted lines. The majority (61%) of Colony Specialty’s premium volume in 2013 was produced by wholesale brokers who submit business in the ordinary course for underwriting and rely on Colony Specialty to produce quotes and handle policy issuance on such accounts. The remaining 39% of Colony Specialty’s premium was produced through a select group of wholesale agents to whom Colony Specialty has delegated limited authority to act on its behalf. These agents are granted authority to underwrite, quote, bind and issue policies in accordance with predetermined underwriting guidelines and procedures prescribed by Colony Specialty. Argo Pro distributes its products through both wholesale brokers and retail agents.

Commercial Specialty. Commercial Specialty uses a broad distribution platform to deliver specialty insurance products and services to our policyholders and agents. Argo Insurance products and services are distributed through selected independent agents, brokers, wholesalers and program managers with demonstrated expertise in one or more of its targeted niche markets and through its in-house managing general agents and on a direct basis in a limited number of states. Rockwood distributes its product lines through a network of independent retail and wholesale agents. Trident provides its insurance products and related services through licensed retail agents, selected brokers and state program managers. Argo Surety distributes its products through selected surety specialty agents and brokers across the United States. ARIS employs both a direct and partner-distribution strategy, which includes brokers, insurers, market advisors, art lenders, investment funds and auction houses. Alteris generally distributes products underwritten on behalf of third party carriers and Argo Group through retail agents and selected brokers.

International Specialty. Argo Re has obtained substantially all of its insurance and reinsurance business through brokers and third party intermediaries who represent clients in negotiations for the purchase of reinsurance. None of the intermediaries through which Argo Re obtains this business are authorized to bind business on our behalf. Argo Insurance distributes its products through selected brokers with whom our underwriters have experience. Argo Seguros distributes products through selected brokers and agents within their local markets.

Syndicate 1200. The syndicate obtains underwriting business from two main sources: the Lloyd’s open market, and underwriting agencies with delegated authority. In the Lloyd’s open market, brokers approach Syndicate 1200 directly with individual insurance risk opportunities for consideration by our underwriters. Brokers also approach Syndicate 1200 through selected underwriting agencies that have been granted limited authority delegated by Syndicate 1200 to make underwriting decisions on individual risks. In general, risks underwritten in the open market are larger than risks underwritten on our behalf by authorized agencies in terms of both exposure and premium.

Competition

We compete in a variety of markets against a variety of competitors depending on the nature of the risk and coverage being underwritten. The competition for any one account may range from large international firms to smaller regional companies in the domiciles in which we operate.

5

To remain competitive, our strategy includes, among other measures: (1) focusing on rate adequacy and underwriting discipline, (2) leveraging our distribution network, (3) controlling expenses, (4) maintaining financial strength and issuer credit ratings, (5) providing quality services to agents and policyholders and (6) acquiring suitable books of business.

Excess and Surplus Lines. Competition within the excess and surplus lines marketplace comes from a wide range of carriers. In addition to mature companies that operate nationwide, there is competition from carriers formed in recent years. The Excess and Surplus Lines segment may also compete with national and regional carriers from the standard market willing to underwrite selected accounts on an admitted basis.

Commercial Specialty. Due to the diverse nature of the products offered by the Commercial Specialty segment, competition comes from various sources. The majority of the competition comes from regional companies or regional subsidiaries of national carriers in the domiciles in which they operate. National carriers tend to compete for larger accounts along all product lines. Competition for our public entity products is primarily from small to medium size commercial insurers as well as from state and regional risk pools.

International Specialty. Argo Re competes with numerous reinsurance and insurance companies. These competitors include independent insurance and reinsurance companies, subsidiaries or affiliates of established worldwide insurance companies, departments of certain commercial insurance companies and underwriting syndicates. Argo Insurance and Argo Seguros compete with international, national and regional insurance companies that offer similar specialty lines of business.

Syndicate 1200. The principal lines of business in this segment are underwritten by numerous other insurance companies and syndicates at Lloyd’s. Competition for any one account may come from other Lloyd’s syndicates, international firms or smaller regional companies.

Ratings

Ratings are an important factor in assessing the Company’s competitive position and its ability to meet its ongoing obligations. Ratings are not a recommendation to buy, sell or hold any security, and they may be revised or withdrawn at any time by the rating agency. Moreover, the ratings of each rating agency should be evaluated independently as the rating methodology and evaluation process may differ. Further, the ratings issued on the Company or its subsidiaries by any of these agencies are announced publicly and are available on the Company’s and respective rating agency’s websites. The Company has two types of ratings: (i) Financial Strength and (ii) Debt or Issuer Credit Ratings.

Financial strength ratings (“FSR”) reflect the rating agency’s assessment of an insurer’s ability to meet its financial obligations to policyholders. With the exception of two companies, ARIS Title Insurance Corporation and Argo Seguros (which are not rated) (the “Unrated Companies”), all of our insurance and reinsurance companies have an FSR of “A” (Excellent) from A.M. Best Company (“A.M. Best”), and our U.S. insurance subsidiaries have an FSR of “A-” (Strong) from Standard & Poor’s (“S&P”).

Debt ratings, and issuer credit ratings (“ICR”), reflect the rating agency’s assessment of a company’s prospects for repaying its debts and can be considered by lenders in connection with the setting of interest rates and terms for a company’s short-term or long-term borrowings. Argo Group US, Inc. has an ICR and senior unsecured debt rating of “BBB-” from S&P. Argo Group International Holdings, Ltd. has an ICR and senior unsecured debt rating of “bbb” from A.M. Best. Except for the two Unrated Companies, all of our insurance and reinsurance companies have an ICR of “a” from A.M. Best.

The outlook is stable on the A.M. Best ratings and negative on the S&P ratings. A.M. Best financial strength ratings range from “A++” (Superior) to “S” (Suspended) and include 16 separate ratings categories. S&P financial strength ratings range from “AAA” (Extremely Strong) to “R” (under regulatory supervision) and include 21 separate ratings categories.

Argo International, our Lloyd’s syndicate, receives a separate financial strength rating based on the business and financial characteristics of the Lloyd’s market as a whole. Lloyd’s is rated “A” (Excellent) with a stable outlook by A.M. Best and “A+” (Strong) with a positive outlook by S&P.

6

Regulation

General

The business of insurance and reinsurance and related services is regulated in most countries, although the degree and type of regulation varies from one jurisdiction to another. The principal jurisdictions in which our insurance and reinsurance segments operate are Bermuda, the United States, the European Union (“EU”), Brazil, Dubai and the United Kingdom. We are also regulated by other countries where we do business.

Bermuda

Insurance Company and Insurance Group Supervision and Regulation Scheme.

All of Bermuda’s insurance groups subject to supervision are internationally active. Therefore, Bermuda’s group supervision framework reflects international developments in this area and principles for insurance group supervision adopted by the International Association of Insurance Supervisors (“IAIS”).

Based on the Insurance Act 1978 (“the Act”), as amended from time to time, Bermuda maintains a progressive, risk-based supervisory system for registered (Re)Insurance Companies and for selected (Re)Insurance Groups.

A number of Bermuda registered (re)insurers operate within a group structure, meaning that a local insurer’s financial position and risk profile, and its overall prudential position, may be impacted by being part of a group, both positively and negatively. Therefore, the Bermuda Monetary Authority (“BMA”) has established a group supervision framework for insurance groups. The BMA conducts its responsibilities and powers as Group Supervisor under the Act, and the supporting legislation, the Insurance (Group Supervision) Rules 2011 and the Insurance (Prudential Standards) (Insurance Groups Solvency Requirement) Rules 2011.

The main objectives of group supervision include (a) policyholder protection, (b) ensuring at least one supervisor has an overall view of the group and its associated risks and (c) addressing any supervisory gaps, the risk of contagion and the impact of any unregulated entities within a group. Therefore, key areas of focus within the group supervision framework are (1) ensuring solvency at group level, (2) monitoring inter-group transactions and (3) assessing corporate governance, risk management and internal control processes of insurance groups. In conducting its function as Group Supervisor, the BMA, among other things, convenes and conducts supervisory colleges with other supervisory authorities that have regulatory oversight of entities within a group and coordinates the gathering and dissemination of relevant or essential information from groups for going concern or emergency situations.

In May of 2011, the BMA gave notice that it had determined itself to be the proper group supervisor for the Company for purposes of its Group Supervision regime, and nominated Argo Re to serve as the designated insurer. Accordingly, the Company and its subsidiaries are deemed to be an affiliated group supervised by the BMA under applicable rules and regulations in Bermuda.

In the course of 2013, the Company has not received any notice that the BMA conducted any supervisory college sessions related to the Company with other supervisory authorities that have regulatory oversight of entities within the Company.

The BMA is also responsible for the supervision, regulation and inspection of Bermuda domiciled insurance companies and for the licensing of all insurance companies, brokers, agents and managers. The Act and its supporting legislation, the Insurance (Prudential Standards) (Class 4 and 3B Solvency Requirement), the Insurance (Eligible Capital) Rules, as well as various other policies and guidance notes, including the Insurance Code of Conduct, provide the Authority with substantive licensing and intervention powers.

These rules provide for significant reporting requirements as to the Company and its consolidated financial condition.

7

Solvency Regulation Scheme

Bermuda continues to enhance its risk-based regulatory regime, which is intended to meet or exceed international standards, including Solvency II (“S II”) as enacted by the EU in November 2009 as discussed more fully below.

Additionally, Bermuda is seeking to become recognized by the EU as having an “equivalent solvency regime” in an effort to benefit Bermuda-based companies by utilizing recognition agreements that would acknowledge equivalent solvency requirements and protect these insurers and reinsurers from having to fulfill the solvency requirements under various and differing regimes.

Many of the areas covered under this initiative will be phased in over a number of years. The BMA’s aim is to enhance its currently existing regime consisting of three core components: (1) Capital Adequacy, (2) Governance and Risk Management and (3) Disclosure and Reporting. Most of these elements are interconnected and potentially influenced by developments in other international regimes. (Re)insurance companies as well as (re)insurance groups are also subject to the Bermuda Solvency Capital Requirement (“BSCR”), a risk-based capital system mandated by the above mentioned rules.

Regulation of Argo Re

Classification of Insurers. The Insurance Act distinguishes between special purpose insurers, insurers carrying on long-term business and insurers carrying on general business. There are various classifications of insurers carrying on general business, with Class 4 insurers subject to the highest level of regulation. Argo Re, which is incorporated to carry on general insurance and reinsurance business, is registered as a Class 4 insurer in Bermuda and is regulated as such under the Act. Under the Insurance Act, no distinction is made between insurance and reinsurance business.

Principal Representative and Principal Office. As an insurer, Argo Re is required to maintain a principal office and to appoint and maintain a principal representative in Bermuda. The principal representative is required to give notice to the BMA regarding certain events relating to solvency, significant losses, proposed changes in ownership and other material changes defined in the Insurance Act. In some instances, prior approval may be required for a proposed action that is the subject of a notice.

Controlling Shareholders of an Insurer; Effect on Ownership of Shares in the Company. The definition of a “shareholder controller” is set out in the Insurance Act, but generally refers to a person who holds 10% or more of the shares carrying rights to vote at a shareholders’ meeting of the registered insurer or its parent company. As such, any person who, directly or indirectly, becomes a holder of at least 10 percent, 20 percent, 33 percent or 50 percent of the Company’s common shares must notify the BMA in writing within 45 days of becoming such a holder. The BMA also has the power under the Insurance Act, at any time, by written notice, to object to any “controller” (including a shareholder controller) if it appears to the BMA that such person is not a fit and proper person to be such a controller. The BMA may require a shareholder controller to reduce its holding of our common shares and direct, among other things, that voting rights attaching to the common shares shall not be exercisable.

Dividends

The payment of dividends by Argo Re is limited under the Insurance Act. Argo Re is prohibited from declaring or paying any dividends during any financial year it is in breach of its minimum solvency margin or minimum liquidity ratio or if the declaration or payment of such dividends would cause it to fail to meet such margin or ratio. Should Argo Re fail to meet its minimum solvency margin or minimum liquidity ratio as of the last day of any financial year, it will be prohibited from declaring or paying any dividends during the next financial year without prior approval from the BMA.

As of December 31, 2013, Argo Re’s solvency and liquidity margins and statutory capital and surplus were in excess of the minimum levels required by the Insurance Act. As of December 31, 2013, the statutory capital and surplus of Argo Re was estimated to be $1,218.2 million and the amount required to be maintained was estimated to be $343.9 million. As of December 31, 2013, Argo Re’s total investments in subsidiaries in its statutory balance sheet were approximately $907.4 million.

In December of 2013 and 2011, Argo Re paid a cash dividend of $84.5 million and $100.0 million, respectively, to Argo Group which was used to repay an intercompany note. No dividends were paid by Argo Re to Argo Group in 2012.

8

United States

State Insurance Regulation

Argo Group US, Inc.’s insurance subsidiaries are subject to the supervision and regulation of the states in which they are domiciled. We currently have twelve insurance companies domiciled in five states (the “U.S. Subsidiaries”). Argo Group US, Inc., as the indirect parent of the U.S. Subsidiaries, is subject to the insurance holding company laws of Illinois, New York, Ohio, Pennsylvania and Virginia. These laws generally require each of the U.S. Subsidiaries to submit annual holding company registration statements to its respective domestic state insurance department and to furnish annually financial and other information about the operations of the companies within the holding company group. Generally, all material transactions among companies in the holding company group to which any of the U.S. Subsidiaries is a party, including sales, loans, reinsurance agreements and service agreements, must be fair and, if material or of a specified category, require prior notice and approval or non-disapproval by the insurance department where the subsidiary is domiciled. Transfers of assets among such affiliated companies, certain dividend payments from insurance subsidiaries and certain material transactions between companies within the holding company group may be subject to prior notice to, or prior approval by, state regulatory authorities. Such supervision and regulation is intended to protect our policyholders rather than our shareholders. Matters relating to authorized lines of business, underwriting standards, financial condition standards, licensing of insurers, investment standards, premium levels, policy provisions, the filing of annual and other financial reports prepared on the basis of Statutory Accounting Principles, the filing and form of actuarial reports, dividends, and a variety of other financial and non-financial matters are also areas that are regulated and supervised by the state in which each of our U.S. Subsidiaries are domiciled.

Guaranty Associations

Our U.S. Subsidiaries are participants in the statutorily created insolvency guaranty associations in all states where they are licensed carriers. These associations were formed for the purpose of paying unearned premium and loss claims of licensed insolvent insurance companies. The U.S. Subsidiaries are assessed their pro rata share of such claims based upon their premium writings, subject to a maximum annual assessment per line of insurance. Such costs can generally be recovered through surcharges on future premiums. Non-admitted business is neither supported by or subject to guaranty assessments.

Dividends

As a result of a previous merger, all of the U.S. Subsidiaries became subsidiaries of Argo Group US, Inc., meaning that any dividends from the U.S. Subsidiaries are payable in the first instance to Argo Group US, Inc. prior to being passed upward as dividends to Argo Group. The ability of our U.S. Subsidiaries to pay dividends is subject to certain restrictions imposed by the jurisdictions of domicile that regulate our U.S. Subsidiaries and each such jurisdiction’s limitations upon the amount of dividends that an insurance company may pay without the approval of its insurance regulator.

Argo Group US, Inc. may receive dividends from its direct subsidiaries: Argonaut Insurance Company, Colony Insurance Company (“Colony”) and Rockwood. For the year ended December 31, 2013, Argonaut Insurance Company paid an ordinary dividend to Argo Group US, Inc. in the amount of $24.8 million. For the year ended December 31, 2013, Colony paid an ordinary dividend to Argo Group US, Inc. in the amount of $76.2 million. The dividend was paid and notice was provided to the Virginia Bureau of Insurance. For the year ended December 31, 2013, Rockwood paid an ordinary dividend to Argo Group US, Inc. in the amount of $9.5 million. During 2014, Argonaut Insurance Company may be permitted to pay dividends of up to $24.8 million without approval from the Illinois Department of Insurance, based on the application of the Illinois ordinary dividend calculation. Colony may be permitted, during 2014, to pay dividends of up to $41.5 million without prior approval from the Virginia Bureau of Insurance, based on the application of Virginia’s ordinary dividend calculation. Rockwood may be permitted, during 2014, to pay dividends of up to $18.1 million without approval from the Pennsylvania Department of Insurance, based on the application of Pennsylvania’s ordinary dividend calculation. Business and regulatory considerations may impact the amount of dividends actually paid, and prior approval of extraordinary dividend payments is required.

State laws require prior notice or regulatory approval of direct or indirect changes in control of an insurer, reinsurer, or its holding company, and of certain significant inter-corporate transfers of assets within the holding company structure. An investor who acquires or attempts to acquire shares representing or convertible into more than 10% of the voting power of the securities of Argo Group would become subject to at least some of such regulations, would require approval by the five domiciliary regulators of the U.S. subsidiaries prior to acquiring such shares and would be required to file certain notices and reports with the five domiciliary regulators prior to such acquisition.

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The Terrorism Risk Insurance Program Reauthorization Act

On December 26, 2007, the President of the United States signed into law the Terrorism Risk Insurance Program Reauthorization Act of 2007, which extends the Terrorism Risk Insurance Act through December 31, 2014. Under the Terrorism Risk Insurance Act, commercial insurers are required to offer insurance coverage against terrorist incidents and are reimbursed by the federal government for paid claims subject to deductible and retention amounts. The law extends the temporary federal Program that provides for a transparent system of shared public and private compensation for insured losses resulting from acts of terrorism. The U.S. Department of the Treasury (“Treasury”) implements the Program. On November 26, 2002, the President of the United States signed into law the Terrorism Risk Insurance Act of 2002 (“TRIA”). The Treasury on June 29, 2004, issued a final Claims Procedures Rule, effective July 31, 2004, as part of its implementation of Title I of TRIA. TRIA also contains specific provisions designed to manage litigation arising out of, or resulting from, a certified act of terrorism. On July 28, 2004, Treasury issued a final rule concerning litigation management.

TRIA, the Claims Procedures Rule, the Litigation Management Rule and related rules set out certain definitions, requirements and procedures for insurers filing claims with Treasury for payment of the Federal share of compensation for insured losses under the Terrorism Risk Insurance Program (“TRIP”). The Claims Procedures Rule, in particular, specifically addresses requirements for Federal payment, submission of an initial notice of insured loss, loss certifications, timing and process for payment, associated recordkeeping requirements, as well as Treasury’s audit and investigation authority. These procedures will apply to all insurers that wish to receive their payment of the Federal share of compensation for insured losses under TRIA. Insurers are advised to review the legislation and TRIP regulations before submitting information.

Additional materials addressing the Terrorism Risk Insurance Act of 2002 and TRIP, including Treasury issued interpretive letters, are contained on the U.S. Department of the Treasury website.

European Union

The enhanced EU regulatory regime “Solvency II” (“S II”), which was enacted in November 2009, imposes new solvency and governance requirements across all EU Member States. These requirements are to be implemented through a new regulatory body, the European Insurance and Occupational Pensions Agency (“EIOPA”). Full implementation of S II has been postponed several times since enactment, and most recently on October 2, 2013, the European Commission proposed postponing the application date of the S II Directive to January 1, 2016. However, final ratification of S II by the European Parliament (plenary vote) is not expected until early 2014. The EIOPA has proposed a number of interim measures as a step towards full implementation. Final interim measures, or Guidelines, were issued by EIOPA in September 2013 to National Competent Authorities. These Guidelines became effective January 1, 2014. S II, which manifests a significant enhancement of the existing Solvency I framework, is the expanded regulatory regime that will impose economic risk-based solvency requirements across all European Member States and consists of three pillars: (1) Pillar I – quantitative capital requirements, based on a valuation of the entire balance sheet; (2) Pillar II – qualitative regulatory review, which includes governance, internal controls, enterprise risk management and supervisory review process; and (3) Pillar III – market discipline, which is accomplished through reporting of the insurer’s financial condition to regulators.

Argo International, Argo Group’s operation at Lloyd’s of London and ArgoGlobal SE will be required to comply with S II and are undertaking actions to be compliant by the proposed implementation date. If Bermuda continues to pursue S II and is deemed equivalent, Bermuda will also be required to follow S II.

Up until such official implementation, the existing country specific rules and regulations remain in force, and are being observed by Argo Group and its affiliates operating in the respective country.

United Kingdom

The Financial Services Act

The Financial Services Bill, which received Royal Assent on December 19, 2012, has now become an Act of Parliament and is known as the Financial Services Act (2012). The Act, which came into force from April 1, 2013, provides regulators with comprehensive powers to counter future risks to financial stability and to ensure that consumers are treated fairly.

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The legislation reformed the regulatory system, which previously divided responsibility for financial stability between the Treasury, Bank of England and Financial Services Authority (“FSA”). The new system gives the Bank of England macro-prudential responsibility for oversight of the financial system and, through the Prudential Regulation Authority (“PRA”), for day-to-day prudential supervision of financial services firms managing significant balance-sheet risk. The FSA has ceased to exist. A proactive new conduct of business regulator, the Financial Conduct Authority (“FCA”), has been created to protect consumers, promote competition and ensure integrity in markets.

PRA and FCA Regulations.

During 2013, Argo International’s operations were regulated by the FSA until March 31, 2013 and by the PRA and the FCA from April 1, 2013 forward. Argo International’s operations were also supervised by Lloyd’s. The PRA, FCA and Lloyd’s have common objectives in ensuring that the Lloyd’s market is appropriately regulated. To minimize duplication, there are arrangements with Lloyd’s for co-operation on supervision and enforcement. Both the PRA and the FCA have substantial powers of intervention in relation to the Lloyd’s Managing Agents (such as Argo Managing Agency Limited) that they regulate, including the power to remove their authorization to manage Lloyd’s Syndicates. In addition, each year the PRA requires Lloyd’s to satisfy an annual solvency test that measures whether Lloyd’s has sufficient assets in the aggregate to meet all outstanding liabilities of its members, both current and run-off. If Lloyd’s fails this test, the PRA may require Lloyd’s to cease trading and/or its members to cease or reduce underwriting.

Lloyd’s Regulations and Requirements.

Argo International’s operations are supervised by Lloyd’s. The Council of Lloyd’s has wide discretionary powers to regulate members’ underwriting at Lloyd’s. The Lloyd’s Franchise Board is responsible for setting risk management and profitability targets for the Lloyd’s market and operates a business planning and monitoring process for all Syndicates, including reviewing and approving the Syndicates’ annual business plans. The Lloyd’s Franchise Board requires annual approval of Argo International’s business plan, including maximum underwriting capacity, and may require changes to any business plan presented to it or that additional capital be provided to support underwriting. Lloyd’s also imposes various charges and assessments on its members.

Argo International predominately participates in the Lloyd’s market through Argo (No 604) Ltd, a Lloyd’s corporate member. By entering into a membership agreement with Lloyd’s, Argo (No 604) Ltd undertakes to comply with all Lloyd’s by-laws and regulations as well as the provisions of the Lloyd’s Acts and Financial Services and Markets Act 2000 that are applicable to it. The underwriting capacity of a member of Lloyd’s must be supported by providing a deposit (referred to as “Funds at Lloyd’s”) in the form of cash, securities or letters of credit in an amount determined by Lloyd’s. The amount of such deposit is calculated for each member through the completion of an annual capital adequacy exercise. These requirements allow Lloyd’s to evaluate that each member has sufficient assets to meet its underwriting liabilities plus a required solvency margin.

If a member of Lloyd’s is unable to pay its claims to policyholders, such claims may be payable by the Lloyd’s Central Fund. If Lloyd’s determines that the Central Fund needs to be increased, it has the power to assess premium levies on current Lloyd’s members. The Council of Lloyd’s has discretion to call or assess up to 3% of a member’s underwriting capacity in any one year as a Central Fund contribution.

Dividends

Dividend payments from Argo International to its immediate parent are not restricted by regulatory authority. When paid, however, such dividends become part of the capital and surplus of Argo Re, at which point further distribution upward to the Company is subject to Bermuda insurance and solvency regulations as discussed above. Dividend payments from Argo International will be at the discretion of Argo International’s Board of Directors and will be subject to the earnings, operations, financial condition, capital and general business requirements of Argo International. Dividends from a Lloyd’s managing agent and a Lloyd’s corporate member can be declared and paid provided it has sufficient capital available.

Malta

ArgoGlobal SE is dedicated to operate as a licensed insurer domiciled in Malta under the Malta Business Act (Cap. 403) by the Malta Financial Services Authority (“MFSA”). ArgoGlobal SE is regulated as a domestic insurer by the MFSA and subject generally to Malta’s laws and regulations relating to insurance and solvency requirements. ArgoGlobal SE entertains risks throughout the European Member States and European Economic Area (“EEA”), either directly from Malta or through an authorized branch office pursuant to the applicable Maltese rules and European regulations on the ‘Exercise of Passport Rights – Services/Establishment’. Switzerland is not an EEA state and as such there are no passporting rights available. On October 24, 2013, ArgoGlobal SE received authorization from the Swiss Financial Market Supervisory Authority (”FINMA”) to establish a branch office and conduct insurance business in Switzerland, followed by a formal notification from the MFSA on November 6, 2013 approving the opening of ArgoGlobal SE Swiss branch. Although dividends are not expected to be paid during the start up phase of ArgoGlobal SE, when payable, such dividends will be subject to applicable laws and regulations in Malta.

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Brazil

Argo Seguros Brasil S.A. is authorized to operate as a licensed insurer domiciled in Brazil by the Superintendencia de Seguros Privados, Superintendence of Private Insurance, (“SUSEP”) per Ordinance No 4.316. Argo Seguros is regulated as a domestic insurer by SUSEP and subject generally to Brazil’s laws and regulations relating to insurance and solvency requirements. Although dividends are not expected to be paid during the start up phase of Argo Seguros, when payable, such dividends will be subject to applicable laws and regulations in Brazil.

Dubai

Argo Re (DIFC) Ltd. is authorized as an “Authorized Firm” licensed to operate in Dubai as an insurance manager and insurance intermediary by the Dubai Financial Services Authority (“DFSA”). Although not subject to solvency requirements and other regulations that apply to insurance carriers and reinsurers generally in Dubai, Argo Re (DIFC) Ltd. is subject to Dubai’s laws and regulations relating to its business activities as an Authorized Firm (Category 4) operating in Dubai.

Reinsurance

As is common practice within the insurance industry, Argo Group’s insurance and reinsurance subsidiaries transfer a portion of the risks insured under their policies by entering into a reinsurance treaty with another insurance or reinsurance company. Purchasing reinsurance protects primary carriers against the frequency and/or severity of losses incurred on the policies they issue, such as in the case of unusually serious occurrences in which a number of claims on one policy aggregate to produce an extraordinary loss on one policy or where a catastrophe generates a large number of serious claims on multiple policies at the same time. Reinsurance does not discharge the issuing primary carrier from its obligation to pay a policyholder for losses insured under its policy. Rather, the reinsured portion of each loss covered under a reinsurance treaty is ceded to the assuming reinsurer for reimbursement to the primary carrier. Because this creates a receivable owed by the reinsurer to the primary carrier, there is credit exposure with respect to losses ceded to the extent that any reinsurer is unable or unwilling to meet the obligations assumed under its reinsurance treaty. The ability to collect on reinsurance is subject to the solvency of the reinsurers, interpretation of contract language and other factors. We are selective in regard to our reinsurers, seeking out those with strong financial strength ratings from A.M. Best or S&P. However, the financial condition of a reinsurer may change over time based on market conditions. We perform credit reviews on our reinsurers, focusing on, among other things, financial condition, stability, trends and commitment to the reinsurance business. In certain instances, we also require deposit of assets in trust, letters of credit or other acceptable collateral to support balances due from certain reinsurers whose financial strength ratings fall below a certain level or who transact business on a non-admitted basis in the case of the U.S. subsidiaries in the state where our insurance subsidiary is domiciled.

At December 31, 2013, Argo Group’s reinsurance recoverable balance totaled $1,263.5 million, net of an allowance for doubtful accounts of $3.7 million. The following table reflects the credit ratings for the reinsurance recoverable balance at December 31, 2013:

(in millions) Ratings per A.M. Best	Reinsurance Recoverables		% of Total
Reinsurers rated A+ or better	$	609.2		48.2	%
Reinsurers rated A		517.3		40.9	%
Reinsurers rated A-		37.5		3.0	%
Reinsurers rated below A- or not rated		99.5		7.9	%
	$	1,263.5		100.0	%

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The top ten reinsurers, rated A or higher, accounted for $871.2 million, or approximately 69% of the reinsurance recoverable balance as of December 31, 2013. Management has concluded that all net balances are considered recoverable as of December 31, 2013.

Additional information relating to our reinsurance activities is included under Item 7, “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and Note 3, “Reinsurance” in the Notes to the Consolidated Financial Statements.

Reserves for Losses and Loss Adjustment Expenses

Argo Group records reserves for specific claims incurred and reported, as well as reserves for claims incurred but not reported. The estimates of losses for reported claims are established judgmentally on an individual case basis. Such estimates are based on our particular experience with the type of risk involved and our knowledge of the circumstances surrounding each individual claim. Reserves for reported claims consider our estimate of the ultimate cost to settle the claims, including investigation and defense of the claim, and may be adjusted for differences between costs originally estimated and costs re-estimated or incurred.

Reserves for incurred but not reported claims are based on the estimated ultimate cost of settling claims, including the effects of inflation and other social and economic factors, using past experience adjusted for current trends and any other factors that would modify past experience. Argo Group uses a variety of statistical and actuarial techniques to analyze current claims costs, including frequency and severity data and prevailing economic, social and legal factors. Reserves established in prior years are adjusted as loss experience develops and new information becomes available. Adjustments to previously estimated reserves are reflected in results in the year in which they are made.

The estimate of reinsurance recoverables related to reported and unreported losses and loss adjustment expenses represent the portion of the gross liabilities that are anticipated to be recovered from reinsurers. Amounts recoverable from reinsurers are recognized as assets at the same time as, and in a manner consistent with, the gross losses associated with the reinsurance treaty.

Argo Group is subject to claims arising out of catastrophes that may have a significant effect on its business, results of operations and/or financial condition. Catastrophes can be caused by various events, including hurricanes, windstorms, earthquakes, hailstorms, explosions, power outages, severe winter weather, fires and man-made events, such as terrorist attacks. The incidence and severity of catastrophes are inherently unpredictable. The extent of losses from a catastrophe is a function of both the total amount of insured exposure in the area affected by the event and the severity of the event.

Argo Group has discontinued underwriting certain lines of business; however, we are still obligated to pay losses incurred on these lines. Certain lines currently in run-off are characterized by long elapsed periods between the occurrence of a claim and any ultimate payment to resolve the claim. Included in Run-off Lines are claims related to asbestos and environmental liabilities arising out of liability policies primarily underwritten in the 1960s, 1970s and into the mid-1980s with a limited number of claims occurring on policies underwritten into the early 1990s. Business formerly underwritten in our Risk Management segment is also classified in the Run-off Lines segment. Additional discussion on Run-off Lines can be found under Item 7, “Management’s Discussion and Analysis of Financial Condition and Results of Operations”.

The tables below present a development of loss and loss adjustment expense reserve liabilities and payments for the years 2003 through 2013. The information presented in Table I is net of the effects of reinsurance. The information presented in Table II includes only amounts related to direct and assumed insurance. Amounts for the predecessor Bermuda reinsurance companies are not included for the years prior to 2007, the year of acquisition. Additionally, amounts for Syndicate 1200 are not included for the years prior to 2008, the year of acquisition.

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Table I

Analysis of Losses and Loss Adjustment Expense (“LAE”) Development

(Net of Reinsurance)

(in millions)	2003			2004			2005			2006		2007		2008		2009		2010		2011		2012		2013
Reserves for Losses and LAE (1) (2)	$	965.5		$	1,060.8		$	1,394.8		$	1,530.5	$	1,863.3	$	2,115.6	$	2,213.2	$	2,253.0	$	2,336.7	$	2,110.9	$	2,107.6
Cumulative Amount Paid as of (3)
1 year later		230.5			183.1			235.6			286.6		410.9		567.8		577.9		577.9		578.8		554.2
2 years later		354.1			341.9			435.2			517.8		721.5		965.5		960.2		968.6		974.2
3 years later		471.6			492.9			600.3			712.7		930.0		1,213.5		1,213.7		1,243.6
4 years later		588.5			614.0			734.0			840.9		1,072.0		1,372.3		1,393.7
5 years later		683.0			717.1			822.2			926.7		1,169.0		1,487.8
6 years later		765.5			785.3			886.8			994.3		1,253.2
7 years later		825.4			840.7			943.0			1,055.0
8 years later		876.9			890.6			1,022.0
9 years later		923.6			950.8
10 years later		971.4
Reserves Re-estimated as of (4)
1 year later		964.6			1,216.0			1,349.9			1,499.4		1,798.6		2,109.3		2,170.1		2,249.6		2,303.8		2,077.3
2 years later		1,158.2			1,196.3			1,331.4			1,472.5		1,757.9		2,018.4		2,112.0		2,193.4		2,265.0
3 years later		1,161.3			1,200.2			1,306.5			1,446.1		1,696.9		1,974.4		2,055.5		2,160.9
4 years later		1,187.3			1,196.0			1,316.3			1,413.5		1,659.1		1,946.8		2,025.6
5 years later		1,189.0			1,219.5			1,296.8			1,389.1		1,640.6		1,919.3
6 years later		1,208.3			1,208.1			1,284.0			1,376.2		1,621.1
7 years later		1,208.4			1,196.5			1,276.0			1,369.2
8 years later		1,202.3			1,196.1			1,303.5
9 years later		1,206.3			1,211.9
10 years later		1,214.3
Cumulative (Deficiency) Redundancy (5) (6)		(248.8	)		(151.1	)		91.3			161.3		242.2		196.3		187.6		92.1		71.7		33.6
Prior Yr. Cumulative (Deficiency) Redundancy (6)		(240.8	)		(135.3	)		118.8			154.3		222.7		168.8		157.7		59.6		32.9		—
Change in Cumulative (Deficiency) Redundancy	$	(8.0	)	$	(15.8	)	$	(27.5	)	$	7.0	$	19.5	$	27.5	$	29.9	$	32.5	$	38.8	$	33.6

⁽¹⁾  Original estimated reserves for losses and LAE, net of reinsurance, as of the balance sheet date for each of the years indicated.

⁽²⁾  Reserves for losses and LAE for 2012 are net of $192.2 million of reserves ceded under a whole account quota share reinsurance transaction covering Syndicate 1200 for 2009 and prior years of account. The table does not include the impact of this transaction on years prior to 2012.

⁽³⁾  Cumulative amounts paid, net of reinsurance payments as of the end of successive years related to those reserves.

⁽⁴⁾  Re-estimated reserves are calculated by adding cumulative amounts paid subsequent to year-end to the re-estimated unpaid losses and LAE for each year.

⁽⁵⁾  Cumulative (deficiency) redundancy, compares the adjusted reserves (3) to the reserves as originally established (1) and shows that the reserves as originally recorded were either inadequate or excessive to cover the estimated cost of claims as of the respective year end.

⁽⁶⁾  The Cumulative (Deficiency) Redundancy for each of the current year and prior year lines includes $176.2 million of (Deficiency) related to the commutation of the Adverse Development Contract (“ADC”) for each of the 2002 through 2004 years. There is no net effect to the change in Cumulative (Deficiency) Redundancy.

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Table II

Analysis of Losses and Loss Adjustment Expense (“LAE”) Development

(Gross Reserves)

(in millions)	2003			2004			2005			2006			2007		2008		2009		2010		2011		2012		2013
Reserves for Losses and LAE (1)	$	1,480.8		$	1,607.5		$	1,875.4		$	2,029.2		$	2,425.5	$	2,996.6	$	3,203.3	$	3,152.2	$	3,291.1	$	3,223.5	$	3,230.3
Cumulative Amount Paid as of (2)
1 year later		316.2			275.2			335.6			358.9			499.5		789.5		834.9		764.7		774.3		739.2
2 years later		501.0			470.4			578.5			650.4			894.6		1,383.8		1,342.7		1,295.2		1,292.7
3 years later		638.8			645.5			784.1			903.7			1,198.9		1,716.4		1,691.6		1,657.6
4 years later		771.7			791.9			957.1			1,086.7			1,364.9		1,938.8		1,927.3
5 years later		882.2			924.0			1,085.4			1,195.2			1,500.3		2,102.3
6 years later		990.4			1,026.2			1,164.8			1,294.2			1,605.8
7 years later		1,081.0			1,092.2			1,248.5			1,369.4
8 years later		1,140.7			1,157.8			1,309.2
9 years later		1,200.5			1,212.7
10 years later		1,252.7
Reserves Re-estimated as of (3)
1 year later		1,489.5			1,604.1			1,792.0			1,960.1			2,369.6		3,044.0		3,135.0		3,132.1		3,245.6		3,195.8
2 years later		1,519.2			1,547.1			1,741.6			1,939.8			2,333.4		2,899.6		3,067.4		3,073.1		3,204.1
3 years later		1,486.5			1,540.8			1,727.4			1,932.3			2,254.1		2,871.9		2,994.4		3,039.7
4 years later		1,513.7			1,542.9			1,764.7			1,869.9			2,182.7		2,834.6		2,970.5
5 years later		1,515.5			1,608.2			1,725.1			1,836.5			2,154.2		2,809.0
6 years later		1,587.1			1,588.5			1,708.4			1,815.7			2,147.7
7 years later		1,581.7			1,576.1			1,695.8			1,824.4
8 years later		1,575.4			1,563.3			1,714.4
9 years later		1,565.6			1,584.7
10 years later		1,593.3
Cumulative (Deficiency) Redundancy  (4)		(112.5	)		22.8			161.0			204.8			277.8		187.6		232.8		112.5		87.0		27.7
Prior Yr. Cumulative (Deficiency) Redundancy		(84.8	)		44.2			179.6			213.5			271.3		162.0		208.9		79.1		45.5
Change in Cumulative (Deficiency) Redundancy	$	(27.7	)	$	(21.4	)	$	(18.6	)	$	(8.7	)	$	6.5	$	25.6	$	23.9	$	33.4	$	41.5	$	27.7

⁽¹⁾  Original estimated reserves for losses and LAE, prior to the effects of reinsurance, as of the balance sheet date for each of the years indicated.

⁽²⁾  Cumulative amounts paid, prior to the effects of reinsurance as of the end of successive years related to those reserves.

⁽³⁾  Re-estimated reserves are calculated by adding cumulative amounts paid subsequent to year-end to the re-estimated unpaid losses and LAE for each year.

⁽⁴⁾  Represents changes of the original estimate of the year indicated (1) and the reserves re-estimated (3) as of the current year-end.

Excluded from the preceding tables are loss reserves of $135.7 million, which were classified as “Liabilities held for sale” as of December 31, 2007.

On December 31, 2012, Syndicate 1200 entered into a whole account quota share contract covering the 2009 and prior years of account. The counterparty was another syndicate within Lloyd’s. As a result of this transaction, net reserves for losses and LAE at the end of 2012 were reduced by $192.2 million ceded under this quota share agreement. On December 17, 2013, the Prudential Regulatory Authority approved a Split Reinsurance to Close arrangement whereby the liabilities assumed by the whole account quota share provider could be legally transferred to that quota share provider. On January 18, 2014, this transaction was effected with an inception date of January 1, 2014.

On September 15, 2005, Argo Group commuted the ADC, which originally became effective in 2002. Reserves previously ceded under the contract of $176.2 million are added back to the Reserves Re-estimated section of the Analysis of Losses and Loss Adjustment Expense Development Net of Reinsurance table for the 2002 through 2004 years and is included in the 2005 Reserves for Losses and LAE line. As a result, the Cumulative (Deficiency) Redundancy line and the Prior Year Cumulative (Deficiency) Redundancy line include a $176.2 million deficiency related to the commutation for each of the 2002 through 2004 years. Retention of loss reserves previously ceded under the ADC did not result in additional loss expense.

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Caution should be exercised in evaluating the information shown in the above tables. It should be noted that each amount includes the effects of all changes in amounts for prior periods. In addition, the tables present calendar year data, not accident or policy year development data, that some readers may be more accustomed to analyzing. The social, economic and legal conditions and other trends which have had an impact on the changes in the estimated liability in the past are not necessarily indicative of the future. Accordingly, readers are cautioned against extrapolating any conclusions about future results from the information presented in these tables.

Additional information relating to our loss reserve development is included under Item 7, “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and Note 5, “Reserves for Losses and Loss Adjustment Expenses” in the Notes to Consolidated Financial Statements.

Investments

Investment Strategy and Guidelines

We follow an investment strategy designed to emphasize the preservation of our invested assets and provide adequate liquidity for the prompt payment of our obligations, including claims payments. To ensure adequate liquidity for payment of claims, we take into account the maturity and duration of our investment portfolio and our general liability profile. To meet our liquidity needs, our core bond portfolio consists primarily of investment grade, fixed-maturity securities. As of December 31, 2013, these securities, along with cash, represented 74% of our total investments and cash.

In an effort to meet business needs and mitigate risks, our investment guidelines provide restrictions on our portfolio’s composition, including issuer limits, sector limits, credit quality limits, portfolio duration, limits on the amount of investments in approved countries and permissible security types. We may direct our investment managers to invest some of the investment portfolio in currencies other than the U.S. dollar based on the business we have underwritten, the currency in which our loss reserves are denominated or regulatory requirements.

The performance of our investment portfolio is subject to a variety of risks, including risks related to general economic conditions, market volatility, interest rate fluctuations, liquidity risk and credit and default risk. Investment guideline restrictions have been established in an effort to minimize the effect of these risks but may not always be effective due to factors beyond our control. A significant change in interest rates could result in losses, realized or unrealized, in the value of our investment portfolio. Additionally, with respect to some of our investments, we are subject to prepayment and possibly reinvestment risk. Certain investments in our Capital Appreciation Portfolio, which includes high yield fixed maturity securities, emerging market debt securities, domestic and global equities and other alternative investments are subject to restrictions on sale, transfer and redemption, which may limit our ability to withdraw funds or realize gains on such investments for some period of time after our initial investment. The values of, and returns on, such investments may also be more volatile.

Investment Committee and Investment Managers

The Investment Committee of our Board of Directors has approved an investment policy statement that contains investment guidelines and supervises our investment activity. The Investment Committee regularly monitors our overall investment results, compliance with investment objectives and guidelines, and ultimately reports our overall investment results to the Board of Directors.

We currently use multiple professional investment managers to manage our portfolio. Certain short-term investments and other strategic investments are managed internally.

Additional information relating to our investment portfolio is included under Item 7A “Quantitative and Qualitative Disclosures about Market Risk” and Note 2, “Investments” in the Notes to Consolidated Financial Statements.

Employees

As of December 31, 2013, Argo Group had 1,249 employees. We provide a comprehensive benefits program for substantially all employees, including a 401(k) savings plan and other retirement plans, health, life and disability benefits and a tuition reimbursement program. Management believes our relationships with our employees are good.

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Available Information

Argo Group’s executive offices are located at 110 Pitts Bay Road, Pembroke HM08, Bermuda. The mailing address is P.O. Box HM 1282, Hamilton HM FX, Bermuda. The telephone number is (441) 296-5858. The website address is www.argolimited.com. None of the information contained on our website is part of this report or is incorporated in this report by reference. We file annual, quarterly and current reports, proxy statements and other information and documents with the Securities and Exchange Commission (“SEC”), which are made available to read and copy at the SEC’s Public Reference Room at 100 F Street, N.E., Washington, D.C. 20549. You may obtain information on the operation of the Public Reference Room by contacting the SEC at 1-800-SEC-0330. Reports filed with the SEC are also made available at www.sec.gov. We make available free of charge on our website our annual report on Form 10-K, quarterly reports on Form 10-Q, interactive data files, current reports on Form 8-K and amendments to those reports filed with or furnished to the SEC pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 as soon as reasonably practical after we electronically file them with or furnish them to the SEC. Also available on our website, under the Investor Relations and Governance links, are copies of our Audit Committee Charter; Human Resources Committee Charter; Investment Committee Charter; Nominating Committee Charter; Risk Committee Charter; Corporate Governance Guidelines and Terms of Reference; and Code of Conduct and Business Ethics. Our Code of Conduct and Business Ethics applies to all of our board members, officers, third-party providers and employees, including our principal executive officer, principal financial officer and principal accounting officer. All of these documents will be provided without charge upon written request to the Senior Vice President, Investor Relations at our above address.

Item 1A. Risk Factors

An investment in our common shares involves various risks, including those mentioned below and those that are discussed from time to time in our other periodic filings with the SEC. Investors should carefully consider these risks, along with the other information filed in this report, before making an investment decision regarding our common shares. There may be additional risks which of we are currently unaware or which we currently consider immaterial. All of these risks could have a material adverse effect on our financial condition, results of operations and/or value of our common shares.

Enterprise Risk Management and Governance Frameworks

Purpose. The objective of the Enterprise Risk Management and Governance Frameworks of Argo Group and its subsidiaries are to ensure that:

1. All reasonably foreseeable material risks, including financial and non-financial, on and off-balance sheet, and current and contingent exposures are identified;

2. The potential impact of such material risks, including material risks affecting capital requirements and capital management, short-term and long-term liquidity requirements, policyholder obligations, and operational strategies and objectives are assessed; and

3. Policies and strategies are developed and maintained to manage, mitigate, and report material risks effectively.

Our frameworks for managing enterprise risks are intended to meet standards that are not only consistent with the applicable laws and regulations, but which are commercially reasonable and prudent taking into consideration the interests of our shareholders, policyholders, and other counterparties.

Conducting our insurance and reinsurance business operations and related services in a prudent manner requires us to establish sound governance mechanisms, including a sound risk management and internal controls framework. This framework has regard for international best practice on enterprise risk management and internal controls and is overseen by the Board of Directors (the “Board”).

The focus of our risk management framework is on “reasonably foreseeable material risks”, meaning those exposures (financial and non-financial, on and off-balance sheet, current and contingent exposures, etc.) that we can identify in advance as having the potential, should they occur, to change the way relevant stakeholders would assess our solvency and / or liquidity position or risk profile in general. These risks include those that are on a group wide risk register. Relevant stakeholders include the Board, senior management, policyholders, investors and the various governmental and non-governmental authorities that monitor and regulate our business activities and securities.

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Risk Strategy. Argo Group’s “Risk Strategy” encompasses our risk appetite, risk tolerance levels and strategy for addressing and managing risk. The Risk Strategy is outlined and implemented through the respective policies, targets, guidelines, requirements and budgets approved by the Board on a periodic basis.

Because we are subject to an increasingly complex environment for regulatory and financial oversight, we consider enterprise risk management and compliance as key functions from an operational standpoint. However, maintaining a suitable and effective Risk Strategy is also viewed as a strategic imperative, since it allows us to remain competitive through better understanding our own risks and overall solvency needs, on both a per risk and an aggregated, enterprise wide basis.

Framework. Argo Group’s risk management and internal controls framework is designed to enable us to achieve an accurate and timely understanding of (1) the nature, caliber and sensitivity of the material foreseeable risks to which we are exposed, (2) our ability to mitigate or avoid such risks and (3) to the extent that an identified risk falls outside of our Risk Strategy, what course of action is necessary to address such risk consistent with our set goals, principles and risk appetites.

Key elements of Argo Group’s risk management framework are summarized below:

1. Our risk management framework consists of three levels of defense and begins at the departmental level. Each business department is charged with the task of identifying, assessing, measuring, monitoring, reporting, and mitigating risks associated with the department’s respective functions and responsibilities. The Head of Enterprise Risk Management, who reports on issues of risk management directly to the Risk Committee of the Board and serves as the second line of defense, plays a key role in risk management by coordinating, facilitating and overseeing the effectiveness and integrity of our risk management activities. This function is also charged with establishing, maintaining and enhancing the methodology and tools used to identify and evaluate risks and, where risks are outside our risk appetite or tolerance, ensuring that there is an appropriate response applied by the respective risk owner. Our Internal Audit department provides another line of defense by assessing the effectiveness of our risk management processes, practices and internal controls and by providing timely feedback and assurance to the Board on the adherence to our risk management framework. The Head of Internal Audit reports on issues related to the internal control framework, directly to the Audit Committee of the Board.

2. We have established policies to identify and address known existing as well as evolving and emerging risks that have the potential to materially impact the adequacy of our financial resources, the volatility of our results, expected shareholder returns or our ability to meet our commercial, legal and regulatory obligations.

3. Argo Group’s risk management framework is:

• embedded in both the organizational structure and strategic oversight process, supported by appropriate internal control policies and procedures.

Argo Group’s Board has Corporate Governance Guidelines and Terms of Reference that reflect local and international developments with regard to Risk and Capital Management. Simultaneously, the role and composition of the Company’s Risk Committee has been expanded to keep pace with the international expansion of the Group as well as evolving regulatory developments, especially in Bermuda, the U.S. and the European Union. The Enterprise Risk Management function at the Group level and the additional local risk management functions further fortify the implementation of and compliance with our risk management framework. Throughout the year, risk related aspects to our business are reviewed and evaluated at all levels. Based on these assessments, appropriate risk management actions have been taken to address and mitigate risks where necessary and to ensure that underwriting and investment activities remain consistent with management’s strategic and business plans, as approved by the Board.

These risk management activities are subsequently monitored, reviewed and, if required, adjusted during the course of regularly scheduled operational meetings, reserve review meetings, and meetings of the Senior Executive team during the year to assure proper alignment with approved risk appetite and tolerance levels.

• supported by information systems that capture underwriting, investment, and operational data in order to provide relevant, accurate, and timely information to the applicable business functions.

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We continue to evaluate and fortify our processes and protocols to assure the integrity of our data, most recently in connection with consolidating certain primary and secondary platforms, standardizing formats, and enhancement of our data mining and reporting capabilities. During the course of the year, Argo Group continued to enhance our internal capital model capabilities and applications as well as various other modeling tools. In addition, we introduced further enhancements to our aggregation and accumulation measurement and monitoring tools.

• designed to incorporate techniques necessary to identify, measure, respond to, monitor and report, on a continuous basis and on an individual and aggregate level, material foreseeable risks.

The risk management techniques, especially with regard to our internal capital model, are constantly refined as new methods are developed, enhanced tools and applications are released and our means to quantify and qualify risks improve.

• designed to specify objectives, risk appetite and tolerance levels, as well as appropriate delegation of oversight, reporting, and operating responsibilities across all functions.

Argo Group’s Risk Strategy is determined by a risk appetite defined by a series of risk limits on Group as well as on operational segment level. The risk appetite is based on the available capital and liquidity and is reflected in the Board approved business plans, designed to fit within certain volatility tolerances, which provide a term of reference for the operational segments of Argo Group.

• Risk limits encompassed in Argo Group’s Risk Strategy include:

• Primary company-wide portfolio limits, which are based on Argo Group’s overall portfolio and designed to protect our capital and liquidity position and limit the likelihood of an economic loss for the year;

• Secondary, supplementary limits, which serve to limit losses that can arise out of individual risk types or accumulations, such as natural catastrophes and terrorism, and to limit market and credit risks that could materially impact Argo Group’s solvency were they to materialize;

• Other limits, which are designed to protect and preserve Argo Group’s reputation and strategic agility and thus protect our future business potential. These limits include parameters for individual risks that could cause permanent damage to how our customers, clients, shareholders and staff perceive Argo Group.

• The prescribed risk appetite ensures that an appropriate balance is struck between entertained business opportunities and associated risks.

• Argo Group’s risk appetite is reflected in our strategic and business planning. In the event of capacity shortages or conflicts with the stipulated limits profile and internal guidelines, fixed escalation and decision-making processes are designed to ensure that business interests and risk management aspects are being surfaced, vetted and reconciled. If necessary, risks are ceded or hedged by means of reinsurance, derivatives or other forms of risk relief.

• documented insofar as all significant policies and procedures associated with the Company’s risk management framework are in writing and available to the Board, Senior Management and employees.

The Corporate Governance, Compliance, Risk Management and Internal Controls Policies and Procedures of Argo Group are reviewed on at least an annual basis. Recommendations are made to the Board, its Committees and Senior Management for updates and upgrades as required on a timely basis.

We believe that the foregoing risk management framework and oversight activities are structured in a way that enables us to take an active approach to risk management in an ever changing legal, regulatory, and business environment. Through the efforts of management, our internal risk management functions and the Board of Directors, we seek to avoid or mitigate unnecessary risks while accepting certain other risks, the return for which may be deemed beneficial to Argo Group and our shareholders.

Significant Risks

Our risk management framework covers the following categories of material foreseeable risks consistent with the guidance provided for each:

• Insurance Underwriting Risks

Insurance Underwriting risks are defined as the risk of loss, or adverse change in the value of insurance liabilities, due to inadequate pricing and/or reserving practices. These risks may be caused by the fluctuations in timing, frequency and severity of insured events and claim settlements in comparison to the expectations at the time of underwriting.

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The insurance and reinsurance business is historically cyclical, and Argo Group may experience periods with excess underwriting capacity and unfavorable premium rates; conversely, Argo Group may have a shortage of underwriting capacity when premium rates are strong both of which could adversely impact Argo Group’s results.

Historically, insurers and reinsurers have experienced significant fluctuations in operating results due to competition, frequency and severity of catastrophic events, levels of capacity, adverse trends in litigation, regulatory constraints, general economic conditions and other factors. The supply of insurance and reinsurance is related to prevailing prices, the level of insured losses and the level of capital available to the industry that, in turn, may fluctuate in response to changes in rates of return on investments being earned in the insurance and reinsurance industry. As a result, the insurance and reinsurance business historically has been a cyclical industry characterized by periods of intense price competition due to excessive underwriting capacity as well as periods when shortages of capacity increased premium levels. Demand for reinsurance depends on numerous factors, including the frequency and severity of catastrophic events, levels of capacity, the introduction of new capital providers, general economic conditions and underwriting results of primary insurers. The supply of reinsurance is related to prevailing prices, recent loss experience and capital levels. All of these factors fluctuate and may contribute to price declines generally in the reinsurance industry.

Argo Group cannot predict with certainty whether market conditions will improve, remain constant or deteriorate. Negative market conditions may impair our ability to underwrite insurance and reinsurance at rates that we consider appropriate and commensurate relative to the risk assumed. If we cannot underwrite insurance or reinsurance at appropriate rates, our ability to transact business would be materially and adversely affected. Any of these factors could lead to an adverse effect on our business, results of operations and/or financial condition.

We operate in a highly competitive environment and no assurance can be given that we will continue to be able to compete effectively in this environment.

We compete with numerous companies that provide property, casualty and specialty lines of insurance and reinsurance and related services. Some of those companies have a larger capital base and are more highly rated than we are. No assurance can be given that we will be able to continue to compete successfully in the insurance and/or reinsurance market. Increased competition in these markets could result in a change in the supply and/or demand for insurance or reinsurance, affect our ability to price our products at risk-adequate rates and retain existing business, or underwrite new business on favorable terms. If this increased competition so limits our ability to transact business, our operating results could be adversely affected.

Argo Group’s insurance and reinsurance subsidiaries have exposure to unpredictable and unexpected changes in the claims environment, or due to catastrophes and terrorist acts that can materially and adversely affect its business, results of operations and/or financial condition.

Emerging Claims. Changes in industry practices and legal, judicial, social and other environmental conditions may have an unforeseeable adverse impact on claims and coverage issues. These issues may adversely affect our business such as extending coverage beyond our intended scope at the time of underwriting or increasing the number or size of expected claims. In some instances, these changes may not become apparent until sometime after insurance or reinsurance contracts that are affected were issued and hence cannot be appropriately factored into the underwriting decision. As a result, the full extent of liability under such insurance or reinsurance contracts may not be known for many years after these contracts have been issued, and our financial position and results of operations may be materially and adversely affected in such future periods. The effects of these and other unforeseen evolving or emerging claims and coverage issues are inherently difficult to predict.

Catastrophic Losses. We are subject to claims arising out of catastrophes that may have a significant effect on our business, results of operations, and/or financial condition. Catastrophes can be caused by various events, including tornadoes, hurricanes, windstorms, tsunamis, earthquakes, hailstorms, explosions, power outages, severe winter weather, wild-fires and man-made events. The incidence and severity of such randomly occurring catastrophic events are inherently unpredictable. The extent of losses from a catastrophe is a function of both the total amount of insured values in the area affected by the event and the severity of the event. Insurance companies are generally not permitted to reserve for probable catastrophic events until they occur. Therefore, although we will actively manage our risk exposure to catastrophes through underwriting limits and processes and further mitigate it through the purchase of reinsurance protection and other hedging instruments, an

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especially severe catastrophe or series of catastrophes could exceed our reinsurance or hedging protection and may have a material adverse impact on our business, results of operations and/or financial condition. Also, it is possible that a series of catastrophic events could occur with unusual frequency in a given period which, although individually not severe enough to trigger the reinsurance protection or other hedging instrument, in the aggregate could have a material adverse impact on Argo Group.

Further, as a provider of property catastrophe reinsurance coverage in the worldwide marketplace, Argo Re’s operating results in any given period will depend to some extent on the number and magnitude of such natural and man-made catastrophes. While Argo Re may, depending on market conditions, purchase catastrophe retrocessional coverage for its own protection, the occurrence of one or more major catastrophes in any given period could nevertheless have a material adverse impact on Argo Re’s operating results and/or financial condition. This could, in turn, result in a material adverse impact on Argo Group’s business, results of operations and/or financial condition.

Terrorism. We also carry the risk of losses resulting from acts of terrorism. Even if reinsurers are able to exclude coverage for terrorist acts or price that coverage at rates that we consider attractive, direct insurers, like our primary insurance company subsidiaries, might not be able to likewise exclude coverage of terrorist acts because of regulatory constraints. If this occurs, Argo Group, in its capacity as a primary insurer, would have a significant gap in its own reinsurance protection and would be exposed to potential losses as a result of any terrorist act. It is impossible to predict occurrence of such events with statistical certainty and difficult to estimate the amount of loss per occurrence they will generate. If there is a future terrorist attack, the possibility exists that losses resulting from such event could prove to be material to our financial condition and results of operations. Terrorist acts may also cause multiple claims, and there is no assurance that our attempts to limit our liability through contractual policy provisions will be effective.

Terrorism peril is deemed by Argo Group to include the damage resulting from various terrorist attacks through either conventional weapons or weapons of mass destruction such as nuclear or radioactive explosive devices as well as chemical and biological contaminants. We continue to review our underwriting data in assessing aggregate exposure to this peril. We underwrite against the risk of terrorism with a philosophy of avoidance wherever possible to the extent permitted by applicable law. For both property and casualty exposures, this is accomplished through the use of portfolio tracking tools that identify high risk areas, as well as areas of potential concentration. We estimate the probable maximum loss from each risk as well as for the portfolio in total and factor this analysis into the underwriting and reinsurance buying process. The probable maximum loss is model generated, and subject to assumptions that may not be reflective of ultimate losses incurred for a terrorist act.

Additionally, Argo Group has identified certain high risk locations and hazardous operations where there is a potential for an explosion or a rapid spread of fire due to a terrorist act. Through modeling, we continue to refine our estimates of the probable maximum loss from such an event and factor this analysis into the underwriting evaluation process and also seek to mitigate this exposure through various policy terms and conditions (where allowed by statute) and through the use of reinsurance, to the extent possible. Our current reinsurance arrangements either exclude terrorism coverage or significantly limit the level of coverage that is provided.

Terrorism exclusions are not permitted in the United States for workers compensation policies under United States federal law or under the laws of any state or jurisdiction in which we operate. When underwriting existing and new workers compensation business, we consider the added potential risk of loss due to terrorist activity, including foreign and domestic, and this may lead us to decline to underwrite or to renew certain business. However, even in lines where terrorism exclusions are permitted, because our clients may object to terrorism exclusion in connection with business that we may still desire to underwrite without an exclusion, some or many of our insurance policies may not include a terrorism exclusion. Given the retention limits imposed under the U.S. federal act and that some or many of our policies may not include exclusion for terrorism, future foreign or domestic terrorist attacks may result in losses that have a material adverse effect on our business, results of operations and/or financial condition.

On November 26, 2002, the President signed into law the Terrorism Risk Insurance Act of 2002 (“TRIA”). TRIA, and its related rules, contain certain definitions, requirements, and procedures for insurers filing claims with Treasury for payment of the Federal share of compensation for insured losses under the Terrorism Risk Insurance Program (“TRIP”). TRIP is a temporary federal program that provides for a transparent system of shared public and private compensation for insured losses resulting from acts of terrorism. The Department of the Treasury (“Treasury”) implements the program. On December 26, 2007, the President signed into law the Terrorism Risk Insurance Program Reauthorization Act of 2007 (“TRIPRA”), which extended TRIA through December 31, 2014. As TRIPRA is scheduled to expire on December 13, 2014, insurers issuing policies with effective dates on or after January 1, 2014, could potentially be exposed to terrorism risks if legislation is not enacted to extend TRIA.

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Additional materials addressing the Terrorism Risk Insurance Act of 2002 and TRIP, including Treasury issued interpretive letters, are contained on the U.S. Department of the Treasury website.

Global climate change may have an adverse effect on our financial results.

Although uncertainty remains as to the nature and effect of future efforts to curb greenhouse gas (“GHG”) emissions and thereby the mitigation of their long-term effects on climate, a broad spectrum of scientific evidence suggests that manmade production of GHG has had an adverse effect on the global climate. Many sectors, to which we provide insurance coverage, might be affected by climate change. Some examples are coastal management, infrastructure, buildings, water, food and energy supply, land-planning, health and rescue preparedness. Assessing the risk of loss and damage associated with the adverse effects of climate change and the range of approaches to address loss and damage associated with the adverse effects of climate change, including impacts related to extreme weather events and slow onset events, remains a challenge and might adversely impact our business, results of operations, and/or financial condition.

Because our business is dependent upon insurance and reinsurance agents and brokers, we are exposed to certain risks arising out of distribution channels that could cause our results to be adversely affected.

We market and distribute some of our insurance products and services through a select group of wholesale agents who have limited quoting and binding authority and who, in turn, sell our insurance products to insureds through retail insurance brokers. These agencies can bind certain risks that meet our pre-established guidelines. If these agents failed to comply with our underwriting guidelines and the terms of their appointment, we could be bound on a particular risk or number of risks that were not anticipated when we developed the insurance products. Such actions could adversely affect our results of operations. Additionally, in any given period we may derive a significant portion of our business from a limited number of agents and brokers and the loss of any of these relationships could have a significant impact on our ability to market our products and services.

In accordance with industry practice, we may pay amounts owed on claims under our insurance and reinsurance contracts to brokers and/or third party administrators who in turn remit these amounts to our insureds or reinsureds. Although the law is unsettled and depends upon the facts and circumstances of each particular case, in some jurisdictions in which Argo Group conducts business, if an agent or broker fails to remit funds delivered for the payment of claims, we may remain liable to our insured or reinsured ceding insurer for the deficiency. Likewise, in certain jurisdictions, when the insured or reinsured pays the remitting funds to our agent or broker in full, our premiums are considered to have been paid in full, notwithstanding that we may or may not have actually received the premiums from the agent or broker. Consequently, we assume a degree of credit risk associated with certain agents and brokers with whom we transact business.

Argo Group may incur income statement charges (or benefits) if the reserves for losses and loss adjustment expenses are insufficient (or redundant). Such income statement charges (or benefits) could be material, individually or in the aggregate, to our financial condition and operating results in future periods.

General Loss Reserves. We maintain reserves for losses and loss adjustment expenses to cover estimated ultimate unpaid liabilities with respect to reported and unreported claims incurred as of the end of each balance sheet date. Reserves do not represent an exact calculation of liability, but instead represent management’s best estimates, which take into account various statistical and actuarial projection techniques as well as other influencing factors. These reserve estimates represent management’s expectations of what the ultimate settlement and administration of claims will cost based on an assessment of facts and circumstances then known, review of historical settlement patterns, estimates of trends in claims severity and frequency, changing legal theories of liability and other factors. Variables in the reserve estimation process can be affected by both internal and external events, such as changes in claims handling procedures, economic inflation, legal precedent and legislative changes. Many of these items are not directly quantifiable, particularly on a prospective basis. Additionally, there may be significant reporting lags between the occurrence of an insured event and the time it is actually reported to the insurer. Reserve estimates are continually reevaluated in a regular ongoing process as historical loss experience develops and additional claims are reported and settled, and as a consequence, management’s estimates may change from time to time. Because the calculation and setting of the reserves for losses and loss adjustment expenses is an inherently uncertain process dependent on estimates, our existing reserves may be insufficient or redundant and estimates of ultimate losses and loss adjustment expenses may increase or decrease over time.

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Asbestos and Environmental Liability Loss Reserves. We have received asbestos and environmental liability claims arising out of liability coverage primarily underwritten in the 1960s, 1970s and into the mid-1980s. Beginning in 1986, nearly all standard liability policies contained an express exclusion for asbestos and environmental related claims. All standard policies currently being issued by our insurance subsidiaries contain this exclusion. We do, however, offer coverage for environmental damages on a restrictive, contained basis with fixed limit caps within certain specialty units within Argo Group. In addition to the previously described general uncertainties encountered in estimating reserves, there are significant additional uncertainties in estimating the amount of our potential losses from asbestos and environmental claims. Reserves for asbestos and environmental claims cannot be estimated with traditional loss reserving techniques that rely on historical accident year development factors due to the uncertainties surrounding these types of claims.

Among the uncertainties impacting the estimation of such losses are:

• potentially long waiting periods between exposure and emergence of any bodily injury or property damage;

• difficulty in identifying sources of environmental or asbestos contamination;

• difficulty in properly allocating responsibility and/or liability for environmental or asbestos damage;

• changes in underlying laws and judicial interpretation of those laws;

• potential for an environmental or asbestos claim to involve many insurance providers over many policy periods;

• long reporting delays from insureds to insurance companies;

• historical data concerning asbestos and environmental losses, which is more limited than historical information on other types of claims;

• questions concerning interpretation and application of insurance coverage; and

• uncertainty regarding the number and identity of insureds with potential asbestos or environmental exposure.

Management believes these factors continue to render traditional actuarial methods less effective at estimating reserves for asbestos and environmental losses than reserves on other types of losses. We establish reserves to the extent that, in the judgment of our management, the facts and prevailing law reflect an exposure for us not dissimilar to those results the industry has experienced with regard to asbestos and environmental related claims. We have annually reviewed our loss and loss adjustment expense reserves for our run-off lines of business, including asbestos and environmental claims. The review entails a detailed analysis of our direct and assumed exposure. We will continue to monitor industry trends and our own experience in order to determine the adequacy of our environmental and asbestos reserves. There is no assurance that future adverse development will not occur, and such development may have an adverse effect on our results of operations.

Black Lung Disease Loss Reserves. Through our subsidiary Rockwood, we have exposure to claims for black lung disease. Those diagnosed with black lung disease are eligible to receive workers compensation benefits from various U.S. federal and state programs. These programs are continually being reviewed by the governing bodies and may be revised without notice in such a way as to increase the level of our exposure.

Because of all of the above, estimates of ultimate losses and loss adjustment expenses may increase in the future. Income statement charges that would result from such increases, if any, cannot now be reasonably estimated. Such charges could be material, individually or in the aggregate, to our future operating results and financial condition. We can provide no assurances such capital will be available. Adjustments to reserves are reflected in the results of the periods in which management’s best estimates are changed.

Additional information relating to our reserves for losses and loss adjustment expense is included under Item 7 “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and Note 5, “Reserves for Losses and Loss Adjustment Expenses” in the Notes to Consolidated Financial Statements.

• Operational Risk

Operational risk refers to the risk of loss arising from inadequate or failed internal processes, people, systems or the operations impact of external events. This risk encompasses all exposures faced by functions and services rendered in the course of conducting business including, and not limited to, accounting and financial reporting, business continuity, claims management, information technology and data processing, legal and regulatory compliance, outsourcing and reinsurance purchasing.

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Argo Group may be unable to attract and retain qualified employees and key executives.

We depend on our ability to attract and retain experienced underwriting talent and other skilled employees and seasoned key executives who are knowledgeable about our business. The pool of highly skilled employees available to fill key positions at our Company may fluctuate based on market dynamics specific to our industry and independent of overall economic conditions. As such, higher demand for employees having desired talents within a particular geographic region or business segment in which we operate could lead to increased compensation expectations for existing and prospective personnel, making it difficult for the Company to recruit and retain key employees and/or or maintain labor costs at desired levels. If we are unable to attract and retain such talented management, we may be unable to maintain our current competitive position in the specialized markets in which we operate and be unable to expand our operations into new markets, which could adversely affect our results.

Argo Group and its subsidiary, Argo Re have operations that require their employees to live and/or work in Bermuda. Under Bermuda law, non-Bermudians are not permitted to engage in any occupation in Bermuda without an approved work permit from the Bermuda Department of Immigration. The Bermuda Department of Immigration will issue a work permit after proper public advertisements and no Bermudian, spouse of a Bermudian or holder of a permanent resident certificate is available who meets the required education, skills and experience for the advertised position. In January 2013, the Bermuda Department of Immigration suspended the term of these Standard Work Permits. A significant number of our Bermuda based employees are employed pursuant to these work permits granted by The Bermuda Department of Immigration authorities. These individuals are considered key employees. If the Bermuda Department of Immigration changes its policies with regard to of the work permit, our operations could be disrupted and our financial performance could be adversely affected.

Offices in foreign jurisdictions, such as Dubai, Malta and Brazil, may have residence and other mandatory requirements that affect the composition of its local boards of directors, executive teams and choice of third party service providers. Due to the competition for available talent in such jurisdictions, Argo Group may not be able to attract and retain personnel as required by its business plans, which could disrupt operations and adversely affect our financial performance.

Argo Group’s internal controls may fail and have an adverse effect on our business.

We use a number of strategies and processes to mitigate our insurance risk exposure including:

• engaging in vigorous underwriting within certain defined risk parameters and subject to various levels of oversight by experienced underwriting professionals;

• carefully evaluating terms and conditions of our policies;

• focusing on our risk aggregations by geographic zones, industry type, credit exposure and other bases; and

• ceding insurance risk to reinsurance companies.

However, there are inherent limitations to the effectiveness of these strategies and processes. No assurance can be given that as a failure to maintain or follow such processes or controls, an unanticipated event or series of such events will not result in loss levels that could have a material adverse effect on our financial condition or results of operations.

We continually enhance our operating procedures and internal controls to effectively support our business and comply with our regulatory and financial reporting requirements. As a result of the inherent limitations in all control systems, no system of controls can provide absolute assurance that all control objectives have been or will be met, and that instances of fraud, if any, within the company have been detected. A control system, no matter how well conceived and operated, can provide only reasonable, not absolute, assurance that the objectives of the control system are met. These inherent limitations include the realities that judgments in decision-making can be faulty, and that breakdowns can occur because of a simple error or mistake. Additionally, controls can be circumvented by the individual acts of some persons or by collusion of two or more persons. The design of any system of controls is based in part upon certain assumptions about the likelihood of future events, and there can be no assurance that any design will succeed in achieving its stated goals under all potential future conditions; over time, controls may become inadequate because of changes in conditions or the degree of compliance with policies or procedures may deteriorate. Further, the design of a control system must reflect the fact that there are resource constraints, and the benefits of controls must be considered relative to their costs. As a result of the inherent limitations in a cost-effective control system, misstatement due to error or fraud may occur and not be detected. Accordingly, our disclosure controls and procedures are designed to provide reasonable, not absolute, assurance that the disclosure controls and procedures are met; our management does not expect that our disclosure controls or our internal controls will prevent all errors or fraud.

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Risk of dependency upon the stability and security of our information technology systems.

Our business is highly dependent upon the successful and uninterrupted functioning of our computer and data processing systems. We rely on these systems to perform accounting, policy administration, actuarial and other modeling functions necessary for writing business, as well as to process and make claims and other payments. We have a highly trained staff that is committed to the development and maintenance of these systems. The failure of these systems could interrupt our operations. This could result in a material adverse effect on our business results.

In addition, a security breach of our computer systems could damage our reputation or result in financial liability. We retain confidential information regarding our business dealings in our computer systems. We may be required to spend significant capital and other resources to protect against security breaches or to alleviate problems caused by such breaches. It is critical that these facilities and infrastructure remain secure. Despite the implementation of security measures, this infrastructure may be vulnerable to physical break-ins, computer viruses, programming errors, attacks by third parties or similar disruptive problems. In addition, we could be subject to liability if external parties were able to penetrate our network security or otherwise misappropriate confidential information.

Argo Group may experience issues with outsourcing relationships which might impact our ability to conduct business in a prudent manner and could negatively impact our operations, results and financial condition.

We outsource certain technology and business process functions to third party providers and may do so increasingly in the future. If we do not effectively develop, implement and monitor our outsourcing relationships, or if third party providers do not perform as anticipated or if we experience technological or other problems with transition, we may not realize productivity improvements or cost efficiencies and may experience operational difficulties, increased costs and a loss of business that may have an adverse effect upon on our operations or financial condition.

Our outsourcing of certain technology and business process functions to third parties may expose us to enhanced risk related to data security, which could result in adverse monetary, reputational and/or regulatory consequences, which in turn could have an adverse effect on our operations or financial condition.

In addition, our ability to receive services from third party providers outside of the United States might be impacted by cultural difference, political instability, unanticipated regulatory requirements or policies inside or outside of the United States. As a result, our ability to conduct our business might be adversely affected.

• Market, Credit, Investment, and Liquidity Risk

Market Risk is the risk of loss or adverse change in the financial position due to fluctuations in the level and in the volatility of market prices of assets, liabilities and financial instruments. This risk may be caused by fluctuations in interest rates, foreign exchange rates or equity, property and securities values.

Credit Risk is the risk of loss or adverse change in the financial position due to fluctuations in the credit standing of issuers of securities, counterparties or any other debtors, including risk of loss arising from an insurer’s inability to collect funds from debtors.

Investment Risk is the uncertainty associated with making an investment that it may not yield the expected returns or performance, including the risk that an investment will decline in value, result in a loss, or result in liability or other adverse consequences for the investor.

Liquidity Risk is the risk of a loss or inability of the Company to realize investments and other assets in order to meet its financial obligations when they fall due or the inability to meet such obligations except at excessive cost.

In an effort to meet business needs and mitigate risks, our investment guidelines provide restrictions on our portfolio’s composition, including limits on the type of issuer, sector limits, credit quality limits, portfolio duration, limits on the amount of investments in approved countries and permissible security types. We may direct our investment managers to invest some of the investment portfolio in currencies other than the U.S. dollar based on the business we have underwritten, the currency in which our loss reserves are denominated, or regulatory requirements.

The performance of our investment portfolio is subject to a variety of risks, including risks related to general economic conditions, market volatility, interest rate fluctuations, liquidity risk and credit and default risk. Investment guideline restrictions have been established in an effort to minimize the effect of these risks but may not always be effective due to factors beyond our control. A significant change in interest rates could result in losses, realized or unrealized, in the value of our investment portfolio. Additionally, with respect to some of our investments, we are subject to prepayment and possibly

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reinvestment risk. Certain investments outside our highly rated fixed income portfolio, which includes high yield fixed maturity securities, equities, and other alternative investments are subject to restrictions on sale, transfer and redemption, which may limit our ability to withdraw funds or realize gains on such investments for some period of time after our initial investment. The values of, and returns on, such investments may also be more volatile.

A prolonged recession or a period of significant turmoil in the U.S. and international financial markets, could adversely affect our business, liquidity and financial condition and our share price.

U.S. and international financial market disruptions such as the ones experienced in the recent global financial crisis, along with the possibility of a prolonged recession, may potentially affect various aspects of our business, including the demand for and claims made under our products, our counterparty credit risk and the ability of our customers, counterparties and others to establish or maintain their relationships with us, our ability to access and efficiently use internal and external capital resources and our investment performance. Volatility in the U.S. and other securities markets may also adversely affect our share price. Depending on future market conditions, we could incur substantial realized and unrealized losses in future periods, which may have an adverse impact on our results of operations, financial condition, debt and financial strength ratings, insurance subsidiaries’ capital and ability to access capital markets.

Our investment portfolio is subject to significant market and credit risks which could result in an adverse impact on our financial position or results.

We hold a diversified portfolio of investments. These investments are managed in accordance with our investment policy by professional investment management firms and internally, under the direction of our Investment Committee, the Chief Executive Officer, Chief Financial Officer and Chief Investment Officer. Although our investment policies stress diversification of risks, conservation of principal, and liquidity, our investments are subject to general economic conditions and market risks as well as risks inherent to particular securities.

During an economic downturn, our investment portfolio could be subject to higher risk. The value of our investment portfolio is subject to the risk that certain investments may default or become impaired due to deterioration in the financial condition of one or more issuers of the securities held, or due to deterioration in the financial condition of an insurer that guarantees an issuer’s payments of such investments. Such defaults and impairments could reduce our net investment income and result in realized investment losses.

Our investment portfolio is also subject to increased valuation uncertainties when investment markets are illiquid. The valuation of investments is more subjective when markets are illiquid, thereby increasing the risk that the carrying amount of the portion of the investment portfolio that is carried at fair value as reflected in our financial statements is not reflective of prices at which actual transactions would occur.

Additionally, our portfolio of investments in fixed maturity and short-term securities may be adversely affected by changes in inflation and/or interest rates which, in turn, may adversely affect operating results. The fair value and investment income of these assets fluctuate with general economic and market conditions. Generally the fair value of fixed maturity securities decreases as interest rates increase. Some fixed maturity securities have call or prepayment options, which represent possible reinvestment risk in declining rate environments. Other fixed maturity securities such as mortgage-backed and asset-backed securities carry prepayment risk.

Since the beginning of the recent global financial crisis, delinquencies and losses with respect to residential mortgage loans generally increased and may continue to increase, particularly in the subprime sector. In addition, during recent years residential property values in many states have declined or remained stable, after extended periods during which those values appreciated. A continued decline or an extended flattening in those values may result in additional increases in delinquencies and losses on residential mortgage loans. These developments may have a significant adverse effect on the prices of loans and securities, including those in our investment portfolio. The situation continues to have wide ranging consequences, including downward pressure on economic growth, which could have a material and adverse impact on our results of operations, financial condition, business and operations.

We also invest in marketable equity securities. These securities are carried on the balance sheet at fair value and are subject to potential losses and declines in market value. Our invested assets also include investments in limited partnerships, privately held securities, and other alternative investments. Such investments entail substantial risks.

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Risks for all types of securities are managed through application of the investment policy, which establishes investment parameters that include (but are not limited to) maximum percentages of investment in certain types of securities, minimum levels of credit quality, and Option-Adjusted Duration guidelines. There is, however, no guarantee of policy effectiveness.

There can be no assurance that our investment objectives will be achieved, and results may vary substantially over time. In addition, although we seek to employ investment strategies that are not correlated with our insurance and reinsurance exposures, losses in our investment portfolio may occur at the same time as underwriting losses and, therefore, exacerbate such losses’ adverse effect on us.

Argo Group may be adversely affected by foreign currency fluctuations.

Although Argo Group’s foreign subsidiaries’ functional currency is the U.S. Dollar, with the exception of our Brazilian subsidiary whose functional currency is the Brazilian Real and our Malta subsidiary whose functional currency is the Euro, certain premium receivables and loss reserves include business denominated in currencies other than U.S. Dollars. We are exposed to the possibility of significant claims in currencies other than U.S. Dollars. We may, from time to time, experience losses resulting from fluctuations in these non-U.S. currencies, which could materially and adversely affect our operating results.

We may be adversely affected by changes in economic and political conditions, including inflation and changes in interest rates.

The effects of inflation could cause the cost of claims to rise in the future. Our reserve for losses and loss adjustment expenses includes assumptions about future payments for settlement of claims and claims handling expenses, such as medical treatments and litigation costs. To the extent inflation causes these costs to increase above reserves established for these claims, we will be required to increase our loss reserves with a corresponding reduction in our net income in the period in which the deficiency is identified.

Additionally, our operating results are affected, in part, by the performance of our investment portfolio. Our investment portfolio may be adversely affected by inflation or changes in interest rates. Interest rates are affected by many factors, including the fiscal and monetary policies of the U.S. and other major economies, inflation, economic and political conditions and other factors beyond our control. Although we attempt to take measures to manage the risks of investing in changing interest rate environments, we may not be able to mitigate interest rate sensitivity effectively. Despite our mitigation efforts, which include duration targets for asset portfolios, compliance monitoring of these targets, and means to reasonably and effectively match asset duration to the duration of our liabilities, fluctuation in interest rates could have a material adverse effect on our book value.

Argo Group faces a risk of non-availability/non-collectability of reinsurance, which could materially and adversely affect its business, results of operations and/or financial condition.

As is common practice within the insurance industry, we transfer a portion of the risks insured under our policies to other companies through the purchase of reinsurance or other, similar risk mitigating hedging instruments. This reinsurance is maintained to protect the insurance and reinsurance subsidiaries against the severity of losses on individual claims, unusually serious occurrences in which a number of claims produce an aggregate extraordinary loss and catastrophic events. Although reinsurance does not discharge our subsidiaries from their primary obligation to pay for losses insured under the policies they issue, reinsurance does make the assuming reinsurer liable to the insurance and reinsurance subsidiaries for the reinsured portion of the risk. A credit exposure exists with respect to ceded losses to the extent that any reinsurer is unable or unwilling to meet the obligations assumed under the reinsurance contracts. The collectability of reinsurance is subject to the solvency of the reinsurers, interpretation and application of contract language and other factors. We are selective in regard to our reinsurers, placing reinsurance with those reinsurers with strong financial strength ratings from A.M. Best, S&P or a combination thereof. Despite strong ratings, the financial condition of a reinsurer may change based on market conditions. In certain instances we also require assets in trust, letters of credit or other acceptable collateral to support balances due. It is not always standard business practice to require security for balances due; therefore, certain balances are not collateralized. A reinsurer’s insolvency or inability to make payments under the terms of a reinsurance contract could have a material adverse effect on our business, results of operations and/or financial condition.

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• Concentration Risk

Concentration Risk is the risk of exposure to losses associated with inadequate diversification of portfolios of assets or obligations. Concentration risk can arise in both the asset and liability side of the balance sheet as well as in off-balance sheet items and can originate from a series of sources such as natural or man-made catastrophes or unprecedented economic events, or from an individual risk exposure, or from a combination of risk exposures such as credit, investment, underwriting, and liquidity.

Argo Group is an integrated financial services provider offering a variety of products across different operational segments and geographic regions. As such, diversification is a key component to its business model. Risk diversification helps us manage our capital allocation by limiting the impact of any single event to the economic, financial and regulatory condition of our Company. The degree to which the diversification effect can be realized depends not only on the correlation between risks but also on the level of relative concentration of those risks. Based on these assumptions, our goal is to maintain an appropriately balanced risk profile by avoiding any disproportionately large risks. At the Argo Group level, we identify, measure, manage and monitor pre-defined concentration risk scenarios across the operational segments, including our own outward reinsurance placements. With respect to investments, top-down indicators such as strategic asset allocation thresholds are defined and closely monitored to ensure balanced investment portfolios. Disproportionately large risks that might accumulate and have the potential to produce substantial losses, such as for instance major natural catastrophic or credit events, are modeled, budgeted and monitored on a standalone basis.

Despite the introduction of identification, modeling and monitoring protocols and in light of the inherent limitations to the tools and applications used, it is possible that an unknown, undetected or underestimated accumulation event could occur and result in a material financial loss to the Company.

For more details, see also above Insurance and Market/Credit Risk section.

• Strategic Risk

Strategic Risk means the risk of the Company’s inability to implement appropriate business plans and strategies, make decisions, allocate resources or adapt to changes in the business environment. Strategic Risk includes the risk of the current or prospective impact on earnings or capital arising from adverse business decisions, improper execution of decisions made or lack of responsiveness to industry changes.

Deterioration of the macroeconomic environment in the U.S., the Eurozone and worldwide

Economic imbalances and financial market turmoil could result in a widening of credit spreads and volatility in share prices. Certain financial and economic data may deteriorate. These circumstances could lead to a decline in asset value and potentially reduce the demand for insurance due to limited economic growth prospects. The ultimate impact of such conditions on the insurance industry in general, and on Argo Group’s operations in particular, cannot be fully or accurately quantified at this time.

Adverse developments in the broader economy could create significant challenges to the insurance industry. If policy responses in Europe, the U.S. and internationally are not effective in mitigating these conditions, the insurance sector could be adversely affected by the resulting financial and economic environment. The sovereign debt crisis in certain Eurozone countries could also negatively impact insurers’ balance sheets, resulting in associated solvency issues. Further, insurance regulators worldwide have responded to the sovereign credit risk, equity risk and current economic cycle by imposing or contemplating new or stricter regulatory measures and increased solvency requirements, all of which could have an adverse effect on Argo Group.

The financial crisis has created substantial financial performance challenges associated with the prolonged low interest rate environment. In response, Argo Group has adjusted the duration and composition of its asset portfolio. Should these challenges continue for an extended period of time, the risk of achieving adequate returns will be greater and could have an adverse effect on our business, results of operations and on the competiveness of our products in the market.

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Argo Group’s insurance and reinsurance subsidiaries are subject to risk-based capital and solvency requirements in their respective regulatory domiciles.

A risk-based capital system is designed to measure whether the amount of available capital is adequate to support the inherent specific risks of each insurer. Risk-based regulatory capital is calculated at least annually. Authorities use the risk-based capital formula to identify insurance companies that may be undercapitalized and thus may require further regulatory attention. The formulas prescribe a series of risk measurements to determine a minimum capital amount for an insurance company, based on the profile of the individual company. The ratio of a company’s actual policyholder surplus to its minimum capital requirements will determine whether any regulatory action is required based on the respective local thresholds.

As a result of these and other requirements, we may require additional capital in the future that might not be available to us on commercially favorable terms. Our future capital requirements depend on many factors, including our ability to underwrite new business, its risk propensity and our ability to establish premium rates and accurately set reserves at levels adequate to cover expected losses. To the extent that the funds generated by insurance premiums received and sale proceeds and income from our investment portfolio are insufficient to fund future operating requirements and cover incurred losses and loss expenses, we may need to raise additional funds through financings or curtail our growth and reduce in size. The prolonged effects of financial market crisis has created uncertainty in the equity and fixed maturity securities markets and has affected our ability, and the ability of others within our industry, to raise additional capital in the public or private markets. Any future financing, if available at all, may be on terms that are not favorable to us and our shareholders. In the case of equity financing, dilution to current shareholdings could result, and the securities issued may have rights, preferences and privileges that are senior or otherwise superior to those of our common shares.

United States. Argo Group U.S. is subject to the risk-based capital system outlined in the Risk-Based Capital for Insurers Model Act. This Act provides four levels of regulatory activity if the risk-based capital ratio yielded by the calculation falls below specified minimums. At each of four successively lower risk-based capital ratios specified by statute, broader regulatory remedies become available. The four levels are: (i) Company Action Level Event, (ii) Regulatory Action Level Event, (iii) Authorized Control Level Event and (iv) Mandatory Control Level Event. If we fall below the minimum acceptable risk-based capital level, we would be subject to additional regulatory actions.

European Union. S II, the enhanced EU regulatory regime providing for a risk-based system for the supervision of European insurance and reinsurance undertakings, was enacted in November 2009. S II imposes new solvency and governance requirements across all EU Member States to be implemented through a new regulatory body, the European Insurance and Occupational Pensions Agency (“EIOPA”). Full implementation of S II has been postponed several times since enactment, and most recently on October, 2 2013, the European Commission proposed postponing the application date of the Solvency II Directive to January 1, 2016. However, final ratification of SII by the European Parliament (plenary vote) is not expected until early 2014. In the meantime, EIOPA has proposed to proceed with introduction of certain parts of the SII framework ahead of full implementation. Due to ongoing development and implementation efforts at the EU-level, the ultimate impact of S II on our capital and solvency position cannot be determined at this time.

United Kingdom. Argo International is subject to the risk-based capital requirements administered by the Prudential Regulation Authority (“PRA”), and will be subject to S II risk –based capital requirements when implemented as discussed above. Lloyd’s has introduced its own implementation plan and requirements for S II with which Argo International has to date and in the future will be expected to comply. Due to ongoing development implementation efforts relating to S II, the specific future impact of S II-based Lloyd’s standards and requirements on Argo International’s business, results of operations or financial condition cannot be determined at this time.

The PRA allows firms to use Solvency II models under an enhanced Individual Capital Adequacy Standards (ICAS) regime prior to full implementation of Solvency II. The PRA has encouraged the early use of Solvency II work to meet existing ICAS requirements, an approach known as ICAS+ and encourages the use of Solvency II models and balance sheets to meet ICAS requirements as a stepping stone towards full Solvency II implementation. Consequently, Lloyd’s requires the submission of an ultimate Solvency Capital Requirement which continues to be used in the capital setting process together with the Solvency II balance sheet as Lloyd’s considers this approach provides equivalent policyholder protection to the mandatory Individual Capital Adequacy Standards regime.

Bermuda.

Argo Group and Argo Re. As discussed in the summary of regulatory provisions above relating to the Company and Argo Re in Bermuda, Argo Re is subject to the Bermuda Solvency Capital Requirement (“BSCR”), a risk-based capital system mandated by the Bermuda Insurance (Prudential Standards) (Class 4 and Class 3B Solvency Requirement) Rules, as amended from time to time. Similarly, Argo Group is subject to the Insurance (Prudential Standards) (Insurance Groups Solvency Requirement) Rules 2011 as amended from time to time. The application and methods of calculating the BSCR required by the Bermuda Monetary Authority (“BMA”) are currently being refined and subject to change, and the ultimate impact on our solvency position of any future material changes cannot be determined at this time.

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Minimum Solvency Margin. Argo Re must ensure that the value of its general business assets exceeds the amount of its general business liabilities by an amount greater than the prescribed minimum solvency margin (“MSM”) pertaining to its general business. As a Class 4 insurer, Argo Re is required, with respect to its general business, to maintain a minimum solvency margin equal to the greatest of (A) $100 million, (B) 50% of net premiums written (being gross premiums written less any premiums ceded by Argo Re, but Argo Re may not deduct more than 25% of gross premiums when computing net premiums written), and (C) 15% of net discounted aggregate losses and loss expense provisions and other insurance reserves. As of January 1, 2013, the Company became supervised by the BMA as an Insurance Group, and must ensure that the value of the Insurance Group’s assets exceeds the Insurance Group’s liabilities by the aggregate MSM of each qualifying member of the Insurance Group.

Enhanced Capital Requirement. The Company, as a BMA supervised Insurance Group, as well as Argo Re, as a Class 4 insurer, is required to maintain available statutory capital and surplus pertaining to its general business at a level equal to or in excess of its enhanced capital requirement (“ECR”). The ECR is established by reference to either the BSCR model or an approved internal capital model, but must be equal to or exceed the MSM for the insurer. The BSCR is a risk-based capital model which provides a method for determining an insurer’s capital requirements (statutory capital and surplus) by taking into account the risk characteristics of different aspects of the insurer’s business. The BMA may, subject to compliance with the relevant provisions of the Act, make such adjustments to an insurer’s ECR and available statutory capital and surplus requirements as it considers appropriate.

Target Capital Level. Although not a metric specifically defined in the Insurance Act, the BMA has the authority to establish a target capital level (“TCL”) for each Class 4 insurer. The TCL is equal to 120% of an insurer’s ECR. The purpose of the TCL is to serve as an early warning tool for the BMA. Failure to maintain statutory capital at or above the TCL will likely result in increased regulatory oversight.

Eligible Capital. Effective December 31, 2011, Argo Re is required to disclose the makeup of its capital in accordance with the recently introduced ‘3-tiered capital system’. Corresponding requirements did not exist for Argo Group for the fiscal year ended 2012, but came into operation on January 1, 2013.

Under the respective systems applied to Argo Re as a re(insurer) and Argo Group as an Insurance Group supervised by the BMA, all capital instruments at Argo Group and Argo Re will be classified as either basic or ancillary capital, which in turn will be classified into one of 3 tiers based on their “loss absorbency” characteristics. Highest quality capital will be classified Tier 1 Capital, lesser quality capital will be classified as either Tier 2 Capital or Tier 3 Capital. Under this regime, not less than 80% of Tier 1 Capital and up to 20% of Tier 2 Capital may be used to support the company’s minimum solvency margin for the filing entity’s general business. Thereafter, a minimum of 60% of Tier 1 Capital and a maximum of 15% of Tier 3 Capital may be used to satisfy the filing entity’s ECR. Any combination of Tier 1, 2 or 3 Capital may be used to meet the TCL. As respects Argo Group, the Insurance (Prudential Standards) (Insurance Group Solvency Requirement) Amendment Rules 2012 provide for a phase-in over a period of six years, starting at 50% of the amount determined and being increased in 10% increments. Where the BMA has previously approved the use of certain instruments for capital purposes, the BMA’s consent must be obtained if such instruments are to remain eligible for use in satisfying the minimum margin of solvency pertaining to the filing entity general business and it’s ECR.

Minimum Liquidity Ratio. Argo Re is required to maintain a minimum liquidity ratio for general business equal to the value of its relevant assets at not less than 75% of the amount of its relevant liabilities. Relevant assets include cash and time deposits, quoted investments, unquoted bonds and debentures, first liens on real estate, investment income due and accrued, accounts and premiums receivable and reinsurance balances receivable. The relevant liabilities are total general business insurance reserves and total other liabilities less deferred income tax and sundry liabilities (by interpretation, those not specifically defined).

Restrictions on Dividends and Distributions. Argo Re is prohibited from declaring or paying any dividends during any financial year if it is in breach of its ECR or its general business solvency margin or its minimum liquidity ratio or if the declaration or payment of such dividends would cause such a breach. If it has failed to meet its minimum margin of solvency or minimum liquidity ratio on the last day of any financial year, Argo Re will be prohibited, without the approval of the BMA, from declaring or paying any dividends during the next financial year. In addition, Argo Re is prohibited from declaring or paying in any financial year dividends of more than 25% of its total statutory capital and surplus (as shown on its previous financial year’s statutory balance sheet) unless it files (at least 7 days before payment of such dividends) with the BMA an affidavit stating that it will continue to meet the required margins.

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Argo Group. As discussed in the regulatory section above, Argo Group and its various subsidiaries are considered to be an affiliated group for purposes of the BMA’s Group Supervision regime. As such, Argo Group is supervised by the BMA within the meaning of its Insurance Group Supervision Rules 2011, as amended from time to time. This Group Supervision regime stipulates solvency margins, capital requirements and eligible capital requirements at the consolidated Argo Group level that may affect the calculation of similar solvency and capital requirements at the Argo Re level. Uncertainty remains around the mentioned criteria, particularly in regard to the eligibility, potential grandfathering, and classification of certain capital instruments. This regime and the applicable rules and regulations are subject to change, and it is not possible to predict the ultimate impact of future changes on Argo Group’s operations and financial condition.

We are unable to predict with certainty how these laws, frameworks and/or regulations will be enforced or amended, the form in which any pending or future laws, frameworks and/or regulations could be adopted, or the effect, if any, these developments would have on our operations and financial condition.

Argo Group may incur significant additional indebtedness.

Argo Group may seek to incur additional indebtedness either through the issuance of public or private debt or through bank or other financing. The funds raised by the incurrence of such additional indebtedness may be used to repay existing indebtedness, including amounts borrowed under Argo Group’s credit facility, Argo Group’s outstanding subordinated debt and Argo Group’s floating rate loan stock or for general corporate purposes of Argo Group, including additions to working capital, capital expenditures, investments in subsidiaries or acquisitions.

This additional indebtedness, particularly if not used to repay existing indebtedness, could limit our financial and operating flexibility, including as a result of the need to dedicate a greater portion of our cash flows from operations to interest and principal payments. It may also be more difficult for us to obtain additional financing on favorable terms, if at all, limiting our ability to capitalize on significant business opportunities and making us more vulnerable to economic downturns.

Argo Group is a holding company and if its subsidiaries do not make dividend payments to Argo Group, Argo Group may not be able to pay dividends or other obligations.

Argo Group is a holding company with no significant operations or significant assets other than the share capital of our subsidiaries. We rely primarily on cash dividends from our subsidiaries to pay our operating expenses and obligations. We expect future distributions from these subsidiaries to be our principal source of funds to meet our financial obligations and pay shareholder dividends. The payment of dividends by our insurance and reinsurance subsidiaries is limited under the laws and regulations of the respective domicile. These regulations stipulate the maximum amount of annual dividends or other distributions available to shareholders without prior approval of the relevant regulatory authorities. Thus, cash resources located in subsidiaries may not be readily available to the parent company in whole or in part to address its liquidity needs.

There can be no assurance that Argo Group and its subsidiaries will not experience a ratings downgrade, which may result in an adverse effect on our business, financial condition and operating results.

Ratings with respect to claims paying ability and financial strength are important factors in establishing the competitive position of insurance companies and will also impact the cost and availability of capital to an insurance company. Ratings by A.M. Best and S&P represent an important consideration in maintaining customer confidence in us and in our ability to market insurance products. Rating organizations regularly analyze the financial performance and condition of insurers.

All of our insurance and reinsurance subsidiaries, except for our two unrated companies, have a Financial Strength Rating of “A” (Excellent) (3rd highest rating out of 16 rating classifications) with a stable outlook from A.M Best. S&P has assigned a Financial Strength Rating of “A-” (Strong) with a negative outlook to our U.S. insurance subsidiaries (other than ARIS Title Insurance Corporation). Argo Group US has an Issuer Credit Rating of “BBB-” (Good) with a negative outlook from S&P.

Our ratings are subject to periodic review by these agencies and the maintenance of those ratings cannot be assured. A significant downgrade in these ratings could adversely affect our competitive position in the insurance industry, make it more difficult for us to market our products, result in a material loss of business as policyholders move to other companies with higher claims-paying and financial strength ratings, and may require us to raise additional capital.

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Argo Group’s merger and acquisition strategy may not succeed.

Argo Group’s strategy for growth may include mergers and acquisitions. This strategy presents risks that could have a material adverse effect on Argo Group’s business and financial performance, including: (i) the diversion of management’s attention, (ii) the ability of Argo Group to execute a transaction effectively, including the integration of operations and the retention of employees and (iii) the contingent and latent risks associated with the past operations of and other unanticipated problems arising from a transaction partner. We cannot predict whether we will be able to identify and complete a future transaction on terms favorable to us. We cannot know if we will realize the anticipated benefits of a completed transaction or if there will be substantial unanticipated costs associated with such a transaction.

In addition to the Argo International acquisition, a future merger or acquisition may result in tax consequences at either or both the shareholder and Argo Group level, potentially dilutive issuances of our equity securities, the incurrence of additional debt and the recognition of potential impairment of goodwill and other intangible assets. Each of these factors could adversely affect our financial position.

Argo Re’s inability to provide the necessary collateral could affect Argo Re’s ability to offer reinsurance in certain markets.

Argo Re, the Bermuda Class 4 risk bearing entity, is not licensed or admitted as an insurer in any jurisdiction other than Bermuda. Because many jurisdictions do not permit insurance companies to take credit for reinsurance obtained from unlicensed or non-admitted insurers in statutory financial statements unless appropriate security is in place, Argo Re anticipates that its reinsurance clients will typically require it to post a letter of credit or other collateral for incurred losses. If Argo Re is unable to arrange for security on commercially reasonable terms, Argo Re could be limited in its ability to underwrite business for certain of its clients.

• Reputational Risk

Reputational Risk is the risk of potential loss through a deterioration of our reputation or standing due to a negative perception of its image among customers, counterparties, shareholders or supervisory authorities, and includes risk of adverse publicity regarding our business practices and associations.

We may be adversely affected by misconduct of our personnel or failure to identify transactions that are in violation of local and international trade sanctions.

Argo Group has updated and strengthened its internal Group-wide Corporate Governance Guidelines and Code of Conduct and Business Ethics, maintains a continuous education and training program, and monitors compliance with same on an ongoing basis. However, there can be no ultimate assurance that these measures will be sufficient in all instances to prevent an undetected violation of internal or external rules of conduct, which might lead to a financial loss and/or reputational damage to the Company.

• Legal, Regulatory and Litigation Risks

Legal and Regulatory Risk means the risk arising from our (a) failure to comply with statutory or regulatory obligations; or (b) failure to comply with its bye-laws; or (c) failure to comply with any contractual agreement.

Litigation Risk means the risk that acts or omissions or other business activity of the Company and its key functionaries and employees could result in legal proceedings to which the Company is a party, the uncertainty surrounding the outcome of such legal proceedings, and the risk of an adverse impact on the Company resulting from such legal proceedings.

Litigation and legal proceedings against Argo Group could have an adverse effect on Argo Group’s financial condition.

Argo Group’s subsidiaries are parties to legal actions incidental to their business. Adverse outcomes could materially affect our financial condition or results of operations.

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Regulatory constraints may restrict our ability to operate our business.

General Regulatory Constraints

Restrictions on Ownership. Argo Group’s ownership of U.S. subsidiaries can, under applicable state insurance company laws and regulations, delay or impede a change of control of Argo Group. Under applicable insurance regulations, any proposed purchase of 10% or more of Argo Group’s voting securities would require the prior approval of the relevant insurance regulatory authorities.

Except as provided below, shareholders have one vote for each common share held by them and are entitled to vote at all meetings of shareholders. However, for so long as the shares of a shareholder are treated as “controlled shares” (as determined under section 958 of the Internal Revenue Code) of any U.S. Person (that owns shares directly or indirectly through non-U.S. entities) and such controlled shares constitute 9.5% or more of the votes conferred by our issued shares, the voting rights with respect to the controlled shares of such U.S. Person, which we refer to as a 9.5% U.S. Shareholder, will be limited, in the aggregate, to a voting power of less than 9.5% under a formula specified in Argo Group’s bye-laws. The formula is applied repeatedly until the voting power of all 9.5% U.S. Shareholders has been reduced to less than 9.5%. In addition, the Argo Group Board may limit a shareholder’s voting rights where it deems it appropriate to do so to (i) avoid the existence of any 9.5% U.S. Shareholder and (ii) avoid certain material adverse tax, legal or regulatory consequences to Argo Group, any subsidiary of Argo Group or any direct or indirect shareholder or its affiliates. “Controlled shares” include, among other things, all shares of Argo Group that such U.S. Person is deemed to own directly, indirectly or constructively (within the meaning of section 958 of the Code).

Under these provisions, certain shareholders may have their voting rights limited, while other shareholders may have voting rights in excess of one vote per share. Moreover, these provisions could have the effect of reducing the votes of certain shareholders who would not otherwise be subject to the 9.5% limitation by virtue of their direct share ownership.

Regulation of Subsidiaries

General. Our insurance and reinsurance subsidiaries and insurance-related services subsidiaries may not be able to obtain or maintain necessary licenses, permits, or authorizations, or may be able to do so only at significant cost. In addition, we may not be able to comply with, or obtain appropriate exemptions from the wide variety of laws and regulations applicable to insurance or reinsurance companies or insurance-related services companies or holding companies. Failure to comply with or to obtain appropriate authorizations and/or exemptions under any applicable laws could result in restrictions on our ability to do business or certain activities that are regulated in one or more of the jurisdictions and could subject us to fines and other sanctions, which could have a material adverse effect on our business.

Argo Group International Holdings, Ltd The Company is supervised by the BMA as an Insurance Group, and as such, is subject to specific laws, rules and regulations promulgated by the Bermudian authorities according to the Insurance Act. Changes in Bermuda’s statutes, regulations and policies could result in restrictions on the Company’s ability to pursue its business plans, strategic objectives, execute its investment strategy, and fulfill other shareholders’ obligations.

Argo Group’s U.S. Subsidiaries Our U.S. insurance subsidiaries are subject to extensive regulation, which may reduce our profitability or inhibit our growth. If we fail to comply with these regulations, we may be subject to penalties, including fines and suspensions, which may adversely affect our financial condition and results of operations. Finally, changes in the level of regulation of the insurance industry or changes in laws or regulations themselves or interpretations by regulatory authorities could adversely affect our ability to pursue our business plan and operate our U.S. insurance subsidiaries.

The U.S. insurance industry is highly regulated and supervised. Our insurance subsidiaries are subject to the supervision and regulation of each of the states in which they are domiciled and the states in which they do business. Such supervision and regulation is designed to protect our policyholders rather than our shareholders. These regulations are generally administered by a department of insurance in each state and relate to various aspects of our business. State insurance departments also conduct periodic examinations of the affairs of insurance and reinsurance companies and require the filing of annual and other reports relating to financial condition, holding company issues and other matters. These regulatory requirements may adversely affect or inhibit our ability to achieve some or all of our business objectives.

In addition, regulatory authorities have relatively broad discretion to deny, suspend or revoke licenses for various reasons, including the violation of regulations. If we do not have the requisite licenses and approvals or do not comply with applicable regulatory requirements, insurance regulatory authorities could preclude or temporarily suspend us from carrying on some or all of our activities or otherwise penalize us. This could adversely affect our ability to operate our business.

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From time to time, various laws and regulations are proposed for application to the U.S. insurance industry, some of which could adversely affect the results of reinsurers and insurers. Among the proposals that have been considered are those that would establish a federal system of regulation in addition to or in lieu of a state-based system of regulation, the repeal of the McCarran-Ferguson Act, and/or measures under the Dodd-Frank Act that have established the Federal Insurance Office. Additionally, the National Association of Insurance Commissioners (“NAIC”) has undertaken the Solvency Modernization Initiative (“SMI”), the primary focus of which is the review of insurer solvency regulations throughout the U.S. and the development of long-term solvency modernization objectives. Included within NAIC’s scope of review for SMI purposes, is the U.S. insurer solvency framework, group solvency issues, capital requirements, international accounting and regulatory standards, reinsurance and corporate governance. We are unable to predict, the potential effect, if any, such legislative or regulatory developments may have on our future operations or financial condition.

Argo Group’s Bermuda Subsidiary Argo Re is registered as a Class 4 Bermuda insurance company and is subject to regulation and supervision in Bermuda by the Bermuda Monetary Authority. Changes in Bermuda insurance statutes, regulations and policies could result in restrictions on Argo Re’s ability to pursue its business plans, issue reinsurance policies, distribute funds and execute its investment strategy.

U.K. Financial Services Authority (“FSA”), Prudential Regulation Authority (PRA) and Financial Conduct Authority (FCA) Regulations Through March 31, 2013, Argo International was regulated by the FSA and supervised by Lloyd’s. The Financial Services Authority was abolished during 2013 and replaced by a regulatory architecture consisting of the Financial Policy Committee (“FPC”), the Prudential Regulation Authority (“PRA”) and the Financial Conduct Authority (“FCA”). As of April 1, 2013, regulatory supervision over Argo International was transferred to the PRA and the FCA. Argo International’s operations also continued to be supervised by Lloyd’s after this date as before. The PRA, FCA and Lloyd’s have common objectives in ensuring that the Lloyd’s market is appropriately regulated. To minimize duplication, there are arrangements with Lloyd’s for co-operation on supervision and enforcement. Both the PRA and the FCA have substantial powers of intervention in relation to the Lloyd’s Managing Agents (such as Argo Managing Agency Limited) that they regulate, including the power to remove their authorization to manage Lloyd’s Syndicates. In addition, each year the PRA requires Lloyd’s to satisfy an annual solvency test that measures whether Lloyd’s has sufficient assets in the aggregate to meet all outstanding liabilities of its members, both current and run-off. If Lloyd’s fails this test, the PRA may require Lloyd’s to cease trading and/or its members to cease or reduce underwriting. Future regulatory changes or rulings by the PRA and/or the FCA, as well as an increased compliance burden during the transition from FSA supervision to PRA and FCA supervision, could interfere with Argo International’s business strategy or financial assumptions, possibly resulting in an adverse effect on Argo International’s financial condition and operating results.

Lloyd’s Regulations and Requirements Argo International’s operations are supervised by Lloyd’s. The Lloyd’s Franchise Board requires annual approval of Argo International’s business plan, including maximum underwriting capacity, and may require changes to any business plan presented to it or additional capital to be provided to support underwriting. Lloyd’s also imposes various charges and assessments on its member companies. If Lloyd’s were to require material changes in Argo International’s business plans, or if charges and assessments payable by Argo International to Lloyd’s were to increase significantly, these events could have an adverse effect on the operations and financial results of Argo International. In addition, no assurances can be given as to how much business Lloyd’s will permit Argo International to underwrite in 2014 and subsequent years nor as to the viability and cost of the capital structure we may use as a substitute for the external capital and reinsurance used by Argo International in 2013 and prior underwriting years.

The financial security of the Lloyd’s market is regularly assessed by three independent rating agencies (A.M. Best, S&P and Fitch Ratings). A satisfactory credit rating issued by an accredited rating agency is necessary for Lloyd’s Syndicates to be able to trade in certain classes of business at current levels. Argo International would be adversely affected if Lloyd’s current ratings were downgraded.

Other Applicable Laws Lloyd’s worldwide insurance and reinsurance business is subject to various regulations, laws, treaties and other applicable policies of the European Union, as well as each nation, state and locality in which it operates. Material changes in governmental requirements and laws could have an adverse effect on Lloyd’s and its member companies, including Argo International.

Malta Financial Services Authority (“MFSA”). ArgoGlobal SE is authorized by the MFSA to carry on the business of insurance under the Business Act (Cap. 403). The MFSA requires ArgoGlobal SE to prepare the Parent Undertaking Solvency Computation in terms of the Insurance Business (Insurers’ Asset and Liabilities) Regulations 2007. In addition, ArgoGlobal SE is subject to regulation by the European Union. Changes in the applicable laws, regulations and supplementing rules could result in restrictions on ArgoGlobal SE’s ability to pursue its mandate.

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Brazil’s Superintendencia de Seguros Privados, Superintendence of Private Insurance, (“SUSEP”). Argo Seguros Brasil S.A. is authorized by SUSEP to carry on business of insurance under the applicable laws, rules and resolutions. Brazil’s insurance regulatory regime contains provisions which restrict the amount of reinsurance a domestic insurer may place with reinsurers outside of Brazil and places limits on the amount of reinsurance that may be placed with affiliates. Such restrictions constrain the size and category of risks that Argo Seguros can entertain and require that Argo Seguros be capitalized at a level that is comparatively higher than in other jurisdictions in which Argo Group has subsidiaries. Failure to manage the impact of such restrictions within its business plan, as well as changes in the applicable laws, rules and supplementing resolutions, could result in restrictions on Argo Seguros’s ability to pursue its mandate.

Dubai Financial Services Authority (“DFSA”). Argo Re (DIFC) Ltd. is licensed to operate as an Authorized Firm (Category 4) to carry on financial services in the area of ‘insurance management’ and ‘insurance intermediation’. Changes in the applicable laws and regulations could result in restrictions on Argo Re (DIFC), Ltd’s ability to pursue its business plan.

Special Selected Risk Factors

An impairment in the carrying value of goodwill and intangible assets could negatively impact our consolidated results of operations and shareholders’ equity.

Goodwill and intangible assets are originally recorded at fair value. Goodwill is not amortized while certain intangible assets are amortized over estimated useful lives or have indefinite useful lives. Goodwill and intangible assets are reviewed for impairment at least annually or more frequently if indicators are present. Management, in evaluating the recoverability of such assets, relies on estimates and assumptions related to margin, growth rates, discount rates and other data. There are inherent uncertainties related to these factors and management’s judgment in applying these factors. Goodwill and intangible asset impairment charges can result from declines in operating results, divestitures or sustained market capitalization declines and other factors. Impairment charges could materially affect our financial results in the period in which they are recognized. As of December 31, 2013, goodwill and intangible assets represented approximately 16% of shareholders’ equity. We continue to monitor relevant internal and external factors and their potential impact on the fair value of our reporting segments, and if required, we will update our impairment analysis.

Some aspects of Argo Group’s corporate structure and applicable insurance regulations may discourage or impede sale of the Company, tender offers, or other mechanisms of control.

Restrictions in Bye-Laws on Stock Transfers. Argo Group’s bye-laws generally permit transfers of our common shares unless the Board of Directors determines a transfer may result in a non-de minimus adverse tax, legal or regulatory consequence to Argo Group, any Argo Group subsidiary or any direct or indirect shareholder of Argo Group or its affiliates. Argo Group may refuse to register on its share transfer records any transfer that does not comply with these share transfer restrictions. A transferee will be permitted to promptly dispose of any Argo Group shares purchased that violate the restrictions and as to the transfer of which registration is refused.

Restrictions on Voting Rights. In the event that we become aware of a U.S. Person (that owns Argo Group shares directly or indirectly through non-U.S. entities) owning more than the permitted 9.5% level of voting power of the outstanding shares of Argo Group after a transfer of shares has been registered, Argo Group’s bye-laws provide that, subject to certain exceptions and waiver procedures, the voting rights with respect to the shares of Argo Group owned by any such shareholder will be limited to the permitted level of voting power, subject only to the further limitation that no other shareholder allocated any such voting rights may exceed the permitted level of voting power as a result of such limitation.

We also have the authority under our bye-laws to request information from any shareholder for the purpose of determining whether a shareholder’s voting rights are to be reallocated under the bye-laws. If a shareholder fails to respond to such a request for information or submits incomplete or inaccurate information in response to such a request, Argo Group may, in its sole discretion, eliminate such shareholder’s voting rights.

Election of Board of Directors. Our bye-laws provide for a classified board of directors. The directors of the class elected at each annual general meeting hold office for a term of three years, with the term of each class expiring at successive annual general meetings of shareholders. Under our bye-laws, the vote of two-thirds of the outstanding shares entitled to vote and the approval of a majority of the board are required to amend bye-laws regarding appointment and removal of directors, indemnification of directors and officers, directors’ interests and the procedures for amending bye-laws.

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Insurance laws and other applicable regulations regarding change of control. Because a person who acquires control of Argo Group would thereby acquire indirect control of the same percentage of the stock in its insurance company subsidiaries, change of control provisions in the laws and other rules applicable to our insurance subsidiaries in various jurisdictions would apply to such a transaction. Such change of control provisions generally apply to transactions involving the acquisition of direct or indirect control over 10% or more of the outstanding shares of Argo Group. No assurance can be given that an applicable regulatory body would approve of any future change of control. These changes of control provisions may discourage potential acquisition proposals and may delay, deter, or prevent a change of control of Argo Group, including transactions that some or all of our shareholders might consider to be desirable.

Restrictions on Third Party Takeovers. The provisions described above may have the effect of making more difficult or discouraging unsolicited takeover bids from third parties. To the extent that these effects occur, shareholders could be deprived of opportunities to realize takeover premiums for their shares and the market price of their shares could be depressed. In addition, these provisions could also result in the entrenchment of incumbent management and Board members.

Argo Group is a Bermuda company and it may be difficult for you to enforce judgments against it and/or its directors and executive officers.

Argo Group is organized under the laws of Bermuda and headquartered in Bermuda. The Companies Act 1981 of Bermuda, and its subsequent amendments, which applies to Argo Group, differs in certain material respects from laws generally applicable to U.S. corporations and their shareholders. These differences include the manner in which directors must disclose transactions in which they have an interest, the rights of shareholders to bring class action and derivative lawsuits, the Company’s right to enter into business transactions with shareholders without prior approval from shareholders, committee organization and the scope of indemnification available to directors and officers.

In addition, certain of Argo Group’s directors and officers reside outside the United States. As such, it may be difficult for investors to effect service of process within the United States on our directors and officers who reside outside the United States or to enforce against us or our directors and officers judgments of U.S. courts predicated upon civil liability provisions of the U.S. federal securities laws.

Argo Group has been advised that there is doubt as to whether:

• a holder of Argo Group’s common shares would be able to enforce, in the courts of Bermuda, judgments of United States courts against persons who reside in Bermuda based upon the civil liability provisions of the United States federal securities laws;

• a holder of Argo Group’s common shares would be able to enforce, in the courts of Bermuda, judgments of United States courts based upon the civil liability provisions of the United States federal securities laws; and

• a holder of Argo Group’s common shares would be able to bring an original action in the Bermuda courts to enforce liabilities against Argo Group or Argo Group’s directors or officers, as well as Argo Group’s independent accountants, who reside outside the United States based solely upon United States federal securities laws.

Further, Argo Group has been advised that there is no treaty in effect between the United States and Bermuda providing for the enforcement of judgments of United States courts, and there are grounds upon which Bermuda courts may not enforce judgments of United States courts. Because judgments of United States courts are not automatically enforceable in Bermuda, it may be difficult for Argo Group’s shareholders to recover against Argo Group based on such judgments.

Tax Risks Associated with Argo Group

U.S. Tax Risks

Argo Group and Argo Group’s non-U.S. subsidiaries may be subject to U.S. tax, which may have a material adverse effect on our financial condition and operating results.

Argo Group and Argo Group’s non-U.S. subsidiaries have operated and intend to continue to operate in a manner that should not cause them to be treated as engaged in a trade or business in the United States (and, in the case of those non-U.S. companies qualifying for treaty protection, in a manner that should not cause any of such non-U.S. subsidiaries to be doing business through a permanent establishment in the United States) and, thus, Argo Group believes that it and its non-U.S.

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subsidiaries should not be subject to U.S. federal income taxes or branch profits tax (other than withholding taxes on certain U.S. source investment income and excise taxes on insurance or reinsurance premiums). However, because there is uncertainty as to the activities that constitute being engaged in a trade or business within the United States, and as to what constitutes a permanent establishment under the applicable tax treaties, there can be no assurances that the United States Internal Revenue Service (“IRS”) will not contend successfully that one or more of the non-U.S. subsidiaries is engaged in a trade or business, or carrying on business through a permanent establishment, in the United States.

The reinsurance agreements between Argo Group and Argo Group’s U.S. subsidiaries may be subject to re-characterization or other adjustment for U.S. federal income tax purposes, which may have a material adverse effect on our financial condition and operating results.

Under Section 845 of the Internal Revenue Code, the IRS may allocate income, deductions, assets, reserves, credits and any other items related to a reinsurance agreement among certain related parties to the reinsurance agreement, re-characterize such items, or make any other adjustment, in order to reflect the proper source, character or amount of the items for each party. No regulations have been issued under Section 845 of the Code. Accordingly, the application of such provisions is uncertain and we cannot predict what impact, if any, such provisions may have on us and our subsidiaries.

Changes in U.S. federal income tax law could be retroactive and may subject Argo Group or its non-U.S. subsidiaries to U.S. federal income taxation.

Legislation has been introduced in the U.S. Congress attempting to eliminate certain perceived tax advantages of companies (including insurance companies) that have legal domiciles outside the United States but have certain U.S. affiliates. There are currently pending legislative proposals that, if enacted, could have a material adverse effect on us or our shareholders. For example, legislation has been introduced in Congress to limit the deductibility of reinsurance premiums paid by U.S. companies to foreign affiliates that, if enacted, could adversely impact our results. It is possible that broader-based or new legislative proposals could emerge in the future that could have an adverse effect on Argo Group or our shareholders.

The tax laws and interpretations thereof are subject to change, possibly on a retroactive basis. We are not able to predict if, when or in what form such changes will be provided and whether such guidance will be applied on a retroactive basis.

Bermuda Tax Risks

Argo Group and Argo Group’s Bermuda subsidiaries may become subject to Bermuda taxes after 2035.

Bermuda currently imposes no income tax on corporations. In addition, we have obtained an assurance from the Bermuda Minister of Finance, under The Exempted Undertakings Tax Protection Act 1966 of Bermuda, that if any legislation is enacted in Bermuda that would impose tax computed on profits or income, or computed on any capital asset, gain or appreciation, or any tax in the nature of estate duty or inheritance tax, then the imposition of any such tax will not be applicable to us or our Bermuda subsidiaries, until March 31, 2035. During 2011, legislation was passed to extend the period of the assurance mentioned above from 2016 to March 31, 2035. We filed for, and received, an extension of the assurance in January of 2012.

U.K. Tax Risks

Our non-U.K. companies may be subject to U.K. tax.

We intend to operate in such a manner so that none of our companies other than those companies incorporated in the United Kingdom should be resident in the U.K. for tax purposes or have a permanent establishment in the U.K. Accordingly, we expect that none of our companies other than Argo International should be subject to U.K. taxation. However, since applicable law and regulations do not conclusively define the activities that constitute conducting business in the U.K. through a permanent establishment, the U.K. Inland Revenue might contend successfully that one or more of our other companies is conducting business in the U.K. through a permanent establishment in the U.K.

Any arrangements between U.K.-resident entities of Argo Group and other members of Argo Group are subject to the U.K. transfer pricing regime. Consequently, if any agreement between a U.K.-resident entity of Argo Group and any other Argo Group entity (whether that entity is resident in or outside the U.K.) is found not to be on arm’s length terms and as a result a U.K. tax advantage is being obtained, an adjustment will be required to compute U.K. taxable profits as if such an agreement were on arm’s length terms. Any transfer pricing adjustment could adversely impact the tax charge incurred by the relevant U.K.-resident entities of Argo Group.

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Irish Tax Risks

Dividends paid by our U.S. subsidiaries to Argo Ireland may not be eligible for benefits under the U.S.-Ireland income tax treaty.

Under U.S. federal income tax law, dividends paid by a U.S. corporation to a non-U.S. shareholder are generally subject to a 30% withholding tax, unless reduced by treaty. The income tax treaty between the Republic of Ireland and the United States (“the Irish Treaty”) reduces the rate of withholding tax on certain dividends to 5%. Were the IRS to contend successfully that Argo Financial Holdings, Ltd (“Argo Ireland”) is not eligible for benefits under the Irish Treaty, any dividends paid by Argo Group’s U.S. subsidiaries to Argo Ireland would be subject to the 30% withholding tax. Such a result could have a material adverse effect on our financial condition and operating results.

Tax Risks Associated with Our Shareholders

If you are a U.S. non-corporate shareholder, dividends you receive from Argo Group will not be eligible for reduced rates of tax upon enactment of certain legislative proposals.

Legislation has been introduced in the U.S. Congress that would, if enacted, deny the applicability of reduced rates to dividends paid by any corporation organized under the laws of a foreign country that does not have a comprehensive income tax system, such as Bermuda. Therefore, depending on whether, when and in what form this legislative proposal is enacted, we cannot assure you that any dividends paid by Argo Group in the future would qualify for reduced rates of tax.

If Argo Group is classified as a passive foreign investment company (“PFIC”), your taxes would increase.

In order to avoid significant potential adverse U.S. federal income tax consequences for any U.S. person who owns our common shares, we must not constitute a PFIC in any year in which such U.S. person is a shareholder. Those consequences could include increasing the tax liability of the investor, accelerating the imposition of the tax and causing a loss of the basis step-up on the death of the investor. In general, a non-U.S. corporation is a passive foreign investment company for a taxable year if 75% or more of its income constitutes passive income or 50% or more of its assets produce passive income. Passive income generally includes interest, dividends and other investment income. However, passive income does not include income derived in the active conduct of an insurance business by a company that is predominantly engaged in an insurance business. This exception is intended to ensure that income derived by a bona fide insurance company is not treated as passive income, except to the extent such income is attributable to financial reserves in excess of the reasonable needs of the insurance business. Argo Group believes that it should not be, and currently does not expect to become, a PFIC for U.S. federal income tax purposes; however, we cannot assure you that we will not be deemed a PFIC by the IRS. There are currently no regulations regarding the application of the PFIC provisions to an insurance company. New regulations or pronouncements interpreting or clarifying these rules may be forthcoming. We cannot predict what impact, if any, such guidance would have on persons subject to U.S. federal income tax that directly or indirectly own Argo Group’s shares.

If you acquire 10% or more of Argo Group’s shares and Argo Group or one or more of its non-U.S. subsidiaries is classified as a controlled foreign corporation (“CFC”) your taxes could increase.

Each U.S. person who, directly, indirectly, or through attribution rules, owns 10% or more of our common shares should consider the possible application of the controlled foreign corporation rules.

Each U.S. 10% shareholder of a controlled foreign corporation on the last day of the controlled foreign corporation’s taxable year generally must include in its gross income for U.S. federal income tax purposes its pro-rata share of the controlled foreign corporation’s subpart F income, even if the subpart F income has not been distributed. In general, a non-U.S. insurance company is treated as a controlled foreign corporation only if such U.S. 10% shareholders collectively own more than 25% of the total combined voting power or total value of the company’s capital stock for an uninterrupted period of 30 days or more during any year. We believe that, because of the anticipated dispersion of share ownership among holders and because of the restrictions in our bye-laws on transfer, issuance or repurchase of our common shares, shareholders will not be subject to treatment as U.S. 10% shareholders of a controlled foreign corporation. In addition, because under our bye-laws no single shareholder is permitted to exercise 9.5% or more of the total combined voting power, unless such provision is waived by the unanimous consent of the board of directors, we believe that our shareholders should not be viewed as U.S. 10% shareholders of a controlled foreign corporation for purposes of the controlled foreign corporation rules. We cannot assure shareholders, however, that these rules will not apply to our shareholders.

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We cannot assure you that Argo Group or its non-U.S. subsidiaries will not be classified as CFCs. We believe that because of the anticipated dispersion of Argo Group’s common share ownership, provisions in Argo Group’s organizational documents that limit voting power and other factors, no United States person who (i) owns Argo Group’s shares directly or indirectly through one or more non-U.S. entities and (ii) has not received a waiver from Argo Group’s board of directors of provisions in Argo Group’s organizational documents that limit voting power, should be treated as owning (directly, indirectly through non-U.S. entities or constructively) 10% or more of the total voting power of all classes of the shares of Argo Group or any of its non-U.S. subsidiaries.

Due to the attribution provisions of the Code regarding determination of beneficial ownership, there is a risk that the IRS could assert that Argo Group or one or more of its non-U.S. subsidiaries are CFCs and that U.S. holders of Argo Group’s shares who own 10% or more of the value of Argo Group’s shares should be treated as owning 10% or more of the total voting power of Argo Group, and/or its non-U.S. subsidiaries, notwithstanding the reduction of voting power discussed above.

If one or more of our non-U.S. subsidiaries is determined to have related person insurance income (“RPII”), you may be subject to U.S. taxation on your pro rata share of such income.

If the RPII of any of our non-U.S. insurance subsidiaries were to equal or exceed 20% of such company’s gross insurance income in any taxable year and direct or indirect insureds (and persons related to such insureds) own, directly or indirectly through entities, 20% or more of our voting power or value, then a U.S. person who owns our shares (directly or indirectly through non-U.S. entities) on the last day of the taxable year would be required to include in its income for U.S. federal income tax purposes such person’s pro rata share of such non-U.S. insurance subsidiary’s RPII for the entire taxable year, determined as if such RPII were distributed proportionately only to U.S. persons at that date regardless of whether such income is distributed. In addition, any RPII that is includible in the income of a U.S. tax-exempt organization may be treated as unrelated business taxable income. The amount of RPII earned by the non-U.S. insurance subsidiaries (generally, premium and related investment income from the direct or indirect insurance or reinsurance of any direct or indirect U.S. holder of common shares or any person related to such holder) will depend on a number of factors, including the identity of persons directly or indirectly insured or reinsured by the non-U.S. insurance subsidiaries. We believe that the gross RPII of each non-U.S. insurance subsidiary did not in prior years of operation and is not expected in the foreseeable future to equal or exceed 20% of such subsidiary’s gross insurance income. Additionally, we do not expect the direct or indirect insureds of our non-U.S. insurance subsidiaries (and persons related to such insureds) to directly or indirectly own 20% or more of either the voting power or value of our shares. No assurance can be given that this will be the case because some of the factors that determine the existence or extent of RPII may be beyond our knowledge and/or control.

The RPII rules provide that if a U.S. person disposes of shares in a non-U.S. insurance corporation in which U.S. persons own 25% or more of the shares (even if the amount of RPII is less than 20% of the corporation’s gross insurance income and the ownership of its shares by direct or indirect insureds and related persons is less than the 20% threshold), any gain from the disposition will generally be treated as ordinary income to the extent of the U.S. person’s share of the corporation’s undistributed earnings and profits that were accumulated during the period that the U.S. person owned the shares (whether or not such earnings and profits are attributable to RPII). In addition, such U.S. person will be required to comply with certain reporting requirements, regardless of the amount of shares owned by the U.S. person. These RPII rules should not apply to dispositions of our shares because we will not ourselves be directly engaged in the insurance business. The RPII provisions, however, have never been interpreted by the courts or the U.S. Treasury Department in final regulations, and regulations interpreting the RPII provisions of the Code exist only in proposed form. It is not certain whether these regulations will be adopted in their proposed form or what changes or clarifications might ultimately be made thereto or whether any such changes, as well as any interpretation or application of RPII by the IRS, the courts or otherwise, might have retroactive effect. The U.S. Treasury Department has authority to impose, among other things, additional reporting requirements with respect to RPII. Accordingly, the meaning of the RPII provisions and the application of those provisions to us and our non-U.S. subsidiaries are uncertain.

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U.S. tax-exempt organizations that own our shares may recognize unrelated business taxable income.

A U.S. tax-exempt organization may recognize unrelated business taxable income if a portion of our insurance income is allocated to the organization. In general, insurance income will be allocated to a U.S. tax-exempt organization if either we are a CFC and the tax-exempt shareholder is a 10% U.S. Shareholder or there is RPII and certain exceptions do not apply. Although we do not believe that any U.S. persons should be allocated such insurance income, we cannot be certain that this will be the case. U.S. tax-exempt investors should consult their tax advisors as to the U.S. tax consequences of any allocation of our insurance income.

The payment of the special cash dividend to Argonaut Group shareholders made in July 2007 could result in adverse U.S. federal income tax consequences to shareholders and to us under certain circumstances.

Argo Group has taken the position that the amount paid as the special cash dividend is to be treated as a distribution with respect to the Argonaut Group common stock, and not as consideration in the merger between Argonaut Group, Inc. and PXRE Group Ltd. (“PXRE”) (the “Merger”). Although we believe our position with respect to the special cash dividend is correct, the IRS may take a contrary position, and to the extent the IRS were to prevail, the amount paid as the special cash dividend would be treated as additional cash received in connection with the Merger and not as a distribution for U.S. federal income tax purposes. If the special cash dividend were to be treated as Merger consideration, it is possible that the special cash dividend would be deemed to be paid from Argonaut Group to Argo Group, in which case a U.S. 30% withholding tax could be imposed on such payment.

Item 1B. Unresolved Staff Comments

None.

Item 2. Properties

We lease office space in Bermuda, where our principal executive offices are located. Argo Group US leases office space in San Antonio, Texas, for its United States headquarters, Commercial Specialty segment and for certain support functions. We also lease space in the following locations:

• New York City, New York (Argo Group US and Colony Specialty)

• Jersey City, New Jersey (Argo Group US)

• Brussels, Belgium (Argo Solutions)

• Chicago, Illinois (Argo Group US and Commercial Specialty)

• Richmond, Virginia (Colony Specialty)

• Portland, Oregon (Grocers Insurance and Argo Insurance)

• San Francisco, California (Argonaut Insurance Company)

• Houston, Texas (Argo Surety)

• Boston and Greenfield, Massachusetts (Trident Insurance Service and Alteris)

• London, England (Argo International)

• Denver, Colorado (Colony Specialty)

• Scottsdale, Arizona (Colony Specialty)

• Seattle, Washington (Argo Group US and Alteris)

• Sao Paulo, Brazil (Argo Brasil Participações Ltda.)

• Dubai, UAE (Argo Re (DIFC) Ltd.)

• Paris, France (Argo Assurances)

• Malta (ArgoGlobal SE)

• Singapore (ArgoGlobal Asia)

In addition, we have entered into other leases in conjunction with our operations at various geographic locations throughout the world. The properties are leased on terms and for durations that are reflective of commercial standards in the communities where these properties are located. We believe the facilities we occupy are adequate for the purposes in which they are currently used and are well maintained.

Item 3. Legal Proceedings

Our subsidiaries are parties to legal actions incidental to their business. Based on the opinion of counsel, management believes that the resolution of these matters will not materially affect our financial condition or results of operations.

Item 4. Mine Safety Disclosure

Not applicable.

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PART II

Item 5. Market for Registrant’s Common Equity, Related Shareholder Matters and Issuer Purchases of Equity Securities

Market Information

Our common stock trades on the NASDAQ Global Select Market under the symbol “AGII.” The following table sets forth the range of high and low sales prices for our common stock for fiscal years 2013 and 2012:

	2013				2012 (1)
	High		Low		High		Low
First Quarter	$	37.83	$	28.64	$	27.84	$	24.48
Second Quarter		43.87		35.18		27.56		24.93
Third Quarter		46.61		39.77		29.81		25.99
Fourth Quarter		48.82		34.57		31.55		28.43

⁽¹⁾  On May 7, 2013, our Board of Directors declared a 10% stock dividend which was paid on June 17, 2013 to shareholders of record on June 3, 2013. The sales prices have been adjusted to reflect the effect of the stock dividend.

On February 21, 2014, the closing price of our common stock was $44.54.

Holders of Common Stock

The number of holders of record of our common stock as of February 21, 2014 was 1,695.

Dividends

Our dividend policy is determined by the Board of Directors and depends, among other factors, upon our earnings, operations, financial condition, capital requirements and general business outlook at the time the policy is considered.

On February 15, 2013, our Board of Directors declared a quarterly cash dividend in the amount of $0.15 on each share of common stock outstanding or $0.14 on each share outstanding adjusted for the 10% stock dividend discussed below. On March 15, 2013, we paid $3.7 million to our shareholders of record on March 1, 2013.

On May 7, 2013, our Board of Directors declared a 10% stock dividend, payable on June 17, 2013, to shareholders of record at the close of business on June 3, 2013. As a result of the stock dividend, 2,447,839 additional shares were issued. Cash was paid in lieu of fractional shares of our common shares. All references to share and per share amounts in this document and related disclosures have been adjusted to reflect the stock dividend for all periods presented.

On May 7, 2013, August 6, 2013 and November 4, 2013, our Board of Directors declared a quarterly cash dividend in the amount of $0.15 on each share of common stock outstanding, on a post stock dividend basis. On March 15, 2013, June 20, 2013, September 16, 2013 and December 16, 2013, we paid $3.7 million, $4.1 million, $4.0 million and $4.0 million to our shareholders of record on March 1, 2013, June 3, 2013, September 2, 2013 and December 2, 2013, respectively.

On February 15, 2012, May 8, 2012, August 7, 2012 and November 6, 2012, our Board of Directors declared a quarterly cash dividend in the amount of $0.11 on each share of common stock outstanding. On March 15, 2012, June 15, 2012, September 18, 2012 and December 17, 2012, we paid $3.2 million, $3.1 million, $3.0 million and $3.0 million to our shareholders of record on March 1, 2012, June 1, 2012, September 4, 2012 and December 3, 2012, respectively.

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On February 18, 2011, May 3, 2011, August 5, 2011 and November 8, 2011, our Board of Directors declared a quarterly cash dividend in the amount of $0.11 on each share of common stock outstanding. On March 15, 2011, June 15, 2011, September 15, 2011 and December 15, 2011, we paid $3.3 million, $3.3 million, $3.3 million and $3.2 million to our shareholders of record on March 1, 2011, June 1, 2011, September 1, 2011 and December 1, 2011, respectively.

The declaration and payment of future dividends to our shareholders will be at the discretion of our Board of Directors and will depend upon the factors noted above.

On February 18, 2014, our Board of Directors declared a quarterly cash dividend in the amount of $0.15 on each share of common stock outstanding. The dividend will be paid on March 17, 2014 to our shareholders of record on March 3, 2014.

Sale of Unregistered Securities

During the year ended December 31, 2013, we did not sell or issue any unregistered securities.

Use of Proceeds from Sale of Registered Securities

During the year ended December 31, 2013, we did not sell or issue any registered securities.

Issuer Purchases of Equity Securities

On November 13, 2007, our Board of Directors authorized the repurchase of up to $150.0 million of Argo Group’s common shares. On February 18, 2011, our Board of Directors authorized the repurchase of up to $150.0 million of our common shares (“2011 Repurchase Authorization”). The 2011 Repurchase Authorization superseded the November 13, 2007 repurchase program such that no further amounts could be repurchased under the repurchase program approved in 2007. On November 5, 2013, our Board of Directors authorized the repurchase of up to $150.0 million of our common shares (“2013 Repurchase Authorization”). The 2013 Repurchase Authorization supersedes the 2011 Repurchase Authorization such that no further amounts could be repurchased under the 2011 Repurchase Authorization.

From January 1, 2013 through December 31, 2013, we have repurchased 1,098,732 shares of our common stock for a total cost of $45.1 million. Since the inception of the repurchase authorizations through December 31, 2013, we have repurchased 7,558,345 shares of our common stock at an average price of $33.15 for a total cost of $250.6 million. These shares are being held as treasury shares in accordance with the provisions of the Bermuda Companies Act 1981. As of December 31, 2013, availability under the 2013 Repurchase Authorization for future repurchases of our common shares was $143.6 million.

The following table provides information with respect to shares of our common stock that were repurchased or surrendered during the three months ended December 31, 2013:

Period	Total Number of Shares Purchased (a)		Average Price Paid per Share (b)		Total Number of Shares Purchased as Part of Publicly Announced Plan or Program (c)		Approximate Dollar Value of Shares That May Yet Be Purchased Under the Plan or Program (d)
October 1 through October 31, 2013		0	$	0.0		0	$	32,241,547
November 1 through November 30, 2013		149,936	$	42.6		149,744	$	143,617,883
December 1 through December 31, 2013		150	$	48.0		0	$	143,617,883
Total		150,086	$	42.6		149,744

Employees are allowed to surrender shares to settle the tax liability incurred upon the vesting or exercise of shares under the various employee equity compensation plans. For the three months ended December 31, 2013, we received 342 shares of our common stock, with an average price paid per share of $44.55, that were surrendered by employees in payment for the minimum required withholding taxes. In the above table, these shares are included in columns (a) and (b), but excluded from columns (c) and (d). These shares do not reduce the number of shares that may yet be purchased under the repurchase plan.

For the year ended December 31, 2013, we received 44,609 shares of our common stock, with an average price paid per share of $42.50, that were surrendered by employees in payment for the minimum required withholding taxes due to the vesting/exercise of equity compensation awards. Additionally, for year ended December 31, 2013, we received 146,382 shares of our common stock that were surrendered by employees to net settle option exercises.

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Performance Graph

The following performance graph compares the performance of Argo Group’s common stock during the five-year period from December 31, 2008 through December 31, 2013 with the performance of the NASDAQ Composite Index and the SNL Property & Casualty Insurance Index. The graph plots the changes in value of an initial $100 investment over the indicated time periods, assuming all dividends are reinvested. The stock price performance shown on the following graph is not intended to predict or be indicative of future price performance.

	Period Ending
Index	12/31/08		12/31/09		12/31/10		12/31/11		12/31/12		12/31/13
Argo Group International Holdings, Ltd.		100.00		85.91		112.11		88.08		103.81		160.35
NASDAQ Composite		100.00		145.36		171.74		170.38		200.63		281.22
SNL Insurance P&C		100.00		108.11		128.91		130.33		153.85		203.82

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Item 6. Selected Financial Data

The following selected financial data is derived from our consolidated financial statements. The information set forth below should be read in conjunction with “Management’s Discussion and Analysis of Financial Condition and Results of Operations,” included under Item 7 and the consolidated financial statements and notes thereto, included in Item 8, “Financial Statements and Supplementary Data.”

	For the Years Ended December 31,
(in millions, except per share amounts)	2013			2012			2011			2010			2009
Statement of Operations Data
Gross written premiums	$	1,888.4		$	1,745.7		$	1,544.8		$	1,527.1		$	1,988.9
Earned premiums		1,303.8			1,186.5			1,082.0			1,211.6			1,414.9
Net investment income		100.0			118.8			125.8			133.6			145.5
Total revenue		1,470.2			1,336.3			1,258.4			1,384.5			1,544.8
Net income (loss)		143.2			52.3			(81.9	)		86.7			115.2
Net income (loss) per diluted common share (a)		5.14			1.83			(2.74	)		2.64			3.40
Cash dividends declared per common share (a)		0.59			0.44			0.44			0.44			0.0
Balance Sheet Data
Invested assets	$	4,079.2		$	4,200.7		$	4,145.7		$	4,215.4		$	4,334.3
Total assets		6,591.0			6,688.9			6,378.3			6,463.9			6,876.2
Other indebtedness		66.3			63.8			65.5			65.0			69.2
Junior subordinated debentures		193.3			193.3			311.5			311.5			311.4
Senior unsecured fixed rate notes		143.8			143.8			0.0			0.0			0.0
Shareholders’ equity		1,563.0			1,514.1			1,463.0			1,609.6			1,594.3
Other Select data
Cash (used) provided by operating activities	$	(0.2	)	$	30.5		$	(17.7	)	$	(3.1	)	$	301.8
Book value per share (a)		58.96			55.22			50.54			52.55			47.00
Combined ratio (b)		97.5	%		104.6	%		119.8	%		102.7	%		97.1	%

^(a)  Per share amounts adjusted for the effects of the 10% stock dividend declared in May 2013.

^(b)  In determining the combined ratio, “Earned premiums” is reduced by the “Other reinsurance-related expense” as management views this expense as ceded premium.

Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations

The following discussion should be read in conjunction with the consolidated financial statements and related notes beginning on page F-1. This discussion contains forward-looking statements that involve risks and uncertainties. Our actual results could differ materially from those anticipated in the forward looking statements as a result of various factors described in this report.

Consolidated Results of Operations

For the year ended December 31, 2013, we reported net income of $143.2 million, or $5.14 per fully diluted share. For the year ended December 31, 2012, we reported net income of $52.3 million, or $1.83 per fully diluted share. For the year ended December 31, 2011, we reported net loss of $81.9 million, or ($2.74) per fully diluted share.

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The following is a comparison of selected data from our operations:

	Years Ended December 31,
(in millions)	2013			2012			2011
Gross written premiums	$	1,888.4		$	1,745.7		$	1,544.8
Earned premiums	$	1,303.8		$	1,186.5		$	1,082.0
Net investment income		100.0			118.8			125.8
Fee (expense) income, net		(4.9	)		5.3			1.4
Net realized investment and other gains		71.3			25.7			49.2
Total revenue	$	1,470.2		$	1,336.3		$	1,258.4
Income (loss) before income taxes	$	179.7		$	66.7		$	(61.9	)
Provision for income taxes		36.5			14.4			20.0
Net income (loss)	$	143.2		$	52.3		$	(81.9	)
Loss ratio		57.8	%		64.5	%		80.2	%
Expense ratio		39.7	%		40.1	%		39.6	%
Combined ratio		97.5	%		104.6	%		119.8	%

The increase in gross written and earned premiums for the year ended December 31, 2013 as compared to the same periods ended 2012 and 2011 was primarily attributable to growth in our United States and Syndicate 1200 segments, coupled with the start up of our Brazil operations. Earned premiums for our United States segments increased to $759.9 million (on gross written premiums of 1,016.8 million) for the year ended December 31, 2013 compared to $718.4 million (on gross written premiums of $957.3 million) and $721.2 million (on gross written premiums of $913.3 million) for the same periods in 2012 and 2011, respectively. The increase in earned premiums was primarily attributable to growth in our Excess and Surplus Lines segment. Partially offsetting these increases were declines in our Commercial Specialty segment due to planned reduction in our retail and public entity units. Earned premiums for our Syndicate 1200 segment increased to $401.7 million (on gross written premiums of $583.9 million) from $320.8 million (on gross written premiums of $533.4 million) and $259.3 million (on gross written premiums of $438.5 million) for the same periods ended 2012 and 2011, respectively. Growth was attributable to increases in our property and liability units, coupled with the introduction of the specialty and aerospace units in 2011, in addition to an increased participation on the Syndicate by the group during that period. Earned premiums for our Bermuda operations were $103.5 million (on gross written premiums of $222.1 million), $120.7 million (on gross written premiums of $208.2 million) and $101.5 million (on gross written premiums of $193.0 million) for the years ended December 31, 2013, 2012 and 2011, respectively. Declines in the property reinsurance market were offset by increased premium writings in our professional lines and excess casualty units. Our operations in Brazil, which began writing business in 2012, contributed $38.7 million of earned premiums (on gross written premiums of $65.6 million) for the year ended December 31, 2013 compared to $26.6 million (on gross written premiums of $46.8 million) for the same period ended 2012.

Consolidated net investment income decreased for the year ended December 31, 2013 as compared to the same periods ended 2012 and 2011 due primarily to the continued reinvestment at market yields below the portfolio’s book yield, a shift in strategy towards slightly shorter duration investments and a movement of a portion of the portfolio out of traditional fixed income investments. Total invested assets at December 31, 2013 were $3,991.9 million, net of $87.3 million of invested assets attributable to Argo International’s trade capital providers. Total invested assets at December 31, 2012 were $4,056.8 million, net of $143.9 million of invested assets attributable to such trade capital providers. Total invested assets at December 31, 2011 were $3,985.0 million, net of $162.5 million of invested assets attributable to such trade capital providers. The decline in total invested assets was primarily attributable to the transfer of assets as a result of our entering into a whole account quota share contract within our Syndicate 1200 segment.

Consolidated gross realized gains were $131.6 million for the year ended December 31, 2013, as compared to $54.4 million and $74.2 million in 2012 and 2011, respectively. The increase in the gross realized gains for the year ended December 31, 2013 was primarily attributable to $59.1 million in realized gains, from a target reduction in certain equity holdings. Consolidated gross realized losses were $60.3 million, $28.7 million and $25.0 million for the years ended December 31, 2013, 2012 and 2011, respectively. Included in gross realized losses for the year ended December 31, 2013 were $19.6 million and $30.8 million of losses on our fixed maturity and other invested assets portfolios, respectively, as we reduced our non-investment grade holdings. Included in consolidated gross realized losses for the years ended December 31, 2013, 2012 and 2011 were write downs of approximately $7.8 million, $3.7 million and $1.2 million, respectively, from the recognition of other-than-temporary impairments on certain investment securities.

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We have purchased foreign currency 90 day forward contracts to manage currency exposure on losses related to selected catastrophe events. The term of these contracts gives us flexibility to adjust the notional amount of the contracts based on payments made and changes in estimates of future losses. We do not apply hedge accounting to these contracts, and as a result, all gains (losses) are recognized in net realized investment and other gains. For the year ended December 31, 2013, we recognized $2.6 million in realized losses from the currency forward contracts. Foreign currency exchange losses related to the loss reserves recorded for these events were negligible for the year ended December 31, 2013. For the years ended December 31, 2012 and 2011, we recognized $0.5 million and $4.6 million, respectively, in realized gains from the currency forward contracts, which were offset by $0.6 million and $4.3 million, respectively, in foreign currency exchange losses related to the loss reserves recorded for these events. The foreign currency exchange losses related to these loss reserves and the realized gains (losses) from the currency forward contracts are reported under the Corporate and Other segment.

Consolidated losses and loss adjustment expenses were $742.0 million for the year ended December 31, 2013, compared to $747.6 million and $863.1 million for the same periods in 2012 and 2011, respectively. Included in losses and loss adjustment expense was $24.6 million in catastrophe losses primarily attributable to storm activity in the United States and Germany and to flooding in Europe and Canada. Included in losses and loss adjustment expense for the year ended December 31, 2013 were current accident year large losses of $16.8 million in our Excess and Surplus Lines, Commercial Specialty and International Specialty segments. Offsetting these 2013 accident year losses was $33.6 million in net favorable loss reserve development on prior accident years, primarily within our general liability lines of business.

Included in losses and loss adjustment expenses for the year ended December 31, 2012 was $75.2 million in catastrophe losses from storm activity in the United States, including Hurricane Sandy and Hurricane Isaac. Partially offsetting these catastrophe losses was $32.9 million in net favorable loss reserve development on prior accident years. The net favorable development was primarily attributable to our general liability, workers compensation and Syndicate 1200 property lines, partially offset by unfavorable development in our commercial multi-peril lines.

Included in losses and loss adjustment expenses for the year ended December 31, 2011 was $208.6 million in catastrophe losses resulting from the Japan and New Zealand earthquakes, storm activity in the United States and flooding in Australia and Thailand. Additionally, we recognized $9.3 million in losses under aggregate reinsurance covers. Partially offsetting these 2011 accident year losses was $3.4 million in net favorable loss reserve development on prior accident years. The net favorable development was primarily attributable to our general liability and workers compensation lines, partially offset by unfavorable development in our Syndicate 1200 property and liability lines, as well as our commercial multi-peril lines.

The following table summarizes the above referenced loss reserve development as respects to prior year loss reserves by line of business for the year ended December 31, 2013:

(in millions)	2012 Net Reserves		Net Reserve Development (Favorable)/ Unfavorable			Percent of 2012 Net Reserves
General liability	$	919.9	$	(33.4	)		-3.6	%
Workers compensation		365.3		(6.5	)		-1.8	%
Commercial multi-peril		195.2		2.7			1.4	%
Commercial auto liability		165.1		12.8			7.8	%
Reinsurance—nonproportional assumed property		122.9		3.7			3.0	%
Special property		21.6		(2.6	)		-12.0	%
Syndicate 1200 property		140.1		(4.3	)		-3.1	%
Syndicate 1200 liability		122.5		(0.3	)		-0.2	%
All other lines		58.3		(5.7	)		-9.8	%
Total	$	2,110.9	$	(33.6	)		-1.6	%

In determining appropriate reserve levels for the year ended December 31, 2013, we maintained the same general processes and disciplines that were used to set reserves at prior reporting dates. No significant changes in methodologies were made to estimate the reserves since the last reporting date; however, at each reporting date we reassess the actuarial estimate of the reserve for loss and loss adjustment expenses and record our best estimate. Consistent with prior reserve valuations, as claims data becomes more mature for prior accident years, actuarial estimates were refined to weigh certain actuarial methods more heavily in order to respond to any emerging trends in the paid and reported loss data. While prior accident years’ net reserves for losses and loss adjustment expenses for some lines of business have developed favorably in recent years, this does not imply that more recent accident years’ reserves also will develop favorably; pricing, reinsurance costs, legal environment, general economic conditions including changes in inflation and many other factors impact management’s ultimate loss estimates.

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When determining reserve levels, we recognize that there are several factors that present challenges and uncertainties to the estimation of net loss reserves. Examples of these uncertainties include changes to the reinsurance structure and potential increases in inflation. Our net retained losses vary by product and they have generally increased over time. To properly recognize these uncertainties, actuarial reviews have given significant consideration to the paid and incurred Bornhuetter-Ferguson (“BF”) methodologies. Compared with other actuarial methodologies, the paid and incurred BF methods assign smaller weight to actual reported loss experience, with the greatest weight assigned to an expected or planned loss ratio. The expected or planned loss ratio has typically been determined using various assumptions pertaining to prospective loss frequency and loss severity. In setting reserves at December 31, 2013, we continued to consider the paid and incurred BF methods for recent years.

Our loss reserve estimates gradually blend in the results from development and frequency/severity methodologies over time. For general liability estimates, our own loss experience is not deemed fully credible for several years after the end of an accident year. We rely primarily on the BF methods during that period. For property business, our loss reserve estimates also blend in the results from development and frequency/severity methodologies over time. For property lines, in contrast to general liability estimates, we give greater weight to development methods starting at the end of the accident year where loss reporting and claims closing patterns settle more quickly.

For the Run-off Lines segment, in determining appropriate reserve levels, we maintained the same general processes and disciplines that were used to set reserves at prior reporting dates. No changes in key assumptions were made to estimate the reserves since the last reporting date.

Consolidated gross reserves for loss and loss adjustment expense were $3,230.3 million (including $128.6 million of reserves attributable to Argo International’s trade capital providers), $3,223.5 million (including $161.6 million of reserves attributable to the trade capital providers) and $3,291.1 million (including $196.6 million of reserves attributable to the trade capital providers) as of December 31, 2013, 2012 and 2011, respectively. Management has recorded its best estimate of loss reserves at each date based on current known facts and circumstances. Due to the significant uncertainties inherent in the estimation of loss reserves, there can be no assurance that future loss development, favorable or unfavorable, will not occur.

In 2011, we entered into two reinsurance transactions with a special purpose reinsurance company which provided coverage through the issuance of two catastrophe bond transactions. The reinsurance transactions provide coverage for selected events. The initial catastrophe bond cover expired on December 31, 2012. The second catastrophe bond cover expired on December 31, 2013. In accordance with generally accepted accounting principles in the United States (“GAAP”), we are accounting for these covers as derivatives, and as such, present the financial statement impact in a separate line item – “Other reinsurance-related expenses”—in our Consolidated Statements of Income (Loss). Other reinsurance-related expenses totaled $19.2 million, $27.3 million and $5.9 million for the years ended December 31, 2013, 2012 and 2011, respectively. As management views these coverages as reinsurance protection, we treat the financial statement effects of these covers as ceded premium for the purposes of calculating our loss, expense and combined ratios.

Consolidated underwriting, acquisition and insurance expenses were $510.8 million, $464.5 million and $425.7 million for the years ended December 31, 2013, 2012 and 2011, respectively. The decrease in the consolidated expense ratio for 2013 as compared to 2012 was primarily attributable to reduced fixed costs as a percentage of earned premiums, partially offset by increased equity compensation expense due to the impact of the increase in our stock price on cash-settled equity awards. The increase in the consolidated expense ratio for 2012 as compared to 2011 reflects approximately $13.1 million of increased expense related to our investments in start-up operations abroad.

Consolidated interest expense was $20.2 million, $23.7 million and $22.1 million for the years ended December 31, 2013, 2012 and 2011, respectively. The decline in consolidated interest expense for the year ended December 31, 2013 as compared to 2012 was due to the redemption in November 2012 of the $118.6 million Capital Trust Securities with proceeds from the senior fixed rate notes, which bear a lower interest rate. The increase in interest expense for the year ended December 31, 2012 as compared to the same period in 2011 was primarily attributable to interest being accrued for both the Senior Notes (issued in September 2012) and $118.6 million of Capital Trust Securities prior to their redemption in November 2012.

Consolidated foreign currency exchange gains were $1.7 million for the year ended December 31, 2013 compared to foreign currency exchange losses of $4.3 million and $3.5 million for the years ended December 31, 2012 and 2011, respectively. The changes in the foreign currency exchange gains were due to fluctuations of the U.S Dollar, on a weighted average basis, against the currencies in which we transact our business.

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The consolidated provisions for income taxes were $36.5 million, $14.4 million and $20.0 million for the years ended December 31, 2013, 2012 and 2011, respectively. The consolidated income tax provision represents the income tax expense associated with our operations based on the tax laws of the jurisdictions in which they operate. Therefore, the consolidated provision for income taxes represents taxes on net income for our United States, Ireland, Belgium, Brazil, Switzerland and the United Kingdom operations. The consolidated tax provision for the year ended December 31, 2013 was primarily attributable to our United States operations and was primarily the result of the realized investment gains. The consolidated tax provision for the year ended December 31, 2012 primarily represents taxes on net income from our operations in the United States and United Kingdom. For the year ended December 31, 2011, the tax provision generated by our operations based in the United States was partially offset by tax benefits for our operations based in the United Kingdom.

Segment Results

We are primarily engaged in writing property and casualty insurance and reinsurance. We have four ongoing reporting segments: Excess and Surplus Lines, Commercial Specialty, International Specialty and Syndicate 1200. Additionally, we have a Run-off Lines segment for products that we no longer underwrite.

We consider many factors, including the nature of each segment’s insurance and reinsurance products, production sources, distribution strategies and regulatory environment, in determining how to aggregate reporting segments.

In evaluating the operating performance of our segments, we focus on core underwriting and investing results before consideration of realized gains or losses from the sales of investments. Intersegment transactions are allocated to the segment that initiated the transaction. Realized investment gains and losses are reported as a component of the Corporate and Other segment, as decisions regarding the acquisition and disposal of securities reside with the corporate investment function and are not under the control of the individual business segments. Although this measure of profit (loss) does not replace net income (loss) computed in accordance with GAAP as a measure of profitability, management uses this measure of profit (loss) to focus our reporting segments on generating operating income.

Since we generally manage and monitor the investment portfolio on an aggregate basis, the overall performance of the investment portfolio, and related net investment income, is discussed above on a combined basis under consolidated net investment income rather than within or by segment.

Excess and Surplus Lines.

The following table summarizes the results of operations for the Excess and Surplus Lines segment:

	Years Ended December 31,
(in millions)	2013			2012			2011
Gross written premiums	$	594.2		$	513.5		$	478.9
Earned premiums	$	460.2		$	399.3		$	405.3
Losses and loss adjustment expenses		244.0			223.3			247.1
Other reinsurance-related expenses		4.9			0.0			0.0
Underwriting, acquisition and insurance expenses		157.2			143.9			139.8
Underwriting income		54.1			32.1			18.4
Net investment income		42.2			51.1			56.0
Interest expense		(6.9	)		(9.1	)		(8.5	)
Income before income taxes	$	89.4		$	74.1		$	65.9
Loss ratio		53.6	%		55.9	%		61.0	%
Expense ratio		34.5	%		36.0	%		34.5	%
Combined ratio		88.1	%		91.9	%		95.5	%
Loss reserves at December 31	$	1,171.8		$	1,209.0		$	1,271.8

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The increase in gross written and earned premiums for the year ended December 31, 2013 as compared to the same periods in 2012 and 2011 was primarily attributable to increased underwriting activity and rate increases in virtually all lines. Gross written premiums for our casualty unit increased to $199.2 million for the year ended December 31, 2013 from $158.9 million for 2012 and $149.1 million for 2011. Gross written premiums for our contract unit increased to $138.0 million for the year ended December 31, 2013 from $121.7 million for 2012 and $116.7 million for 2011. Gross written premiums for our property unit increased to $67.8 million for the year ended December 31, 2013 from $48.6 million for 2012 and $35.7 million for 2011. Partially offsetting these increases were reduced writings in the transportation unit, as we continued to exit unprofitable accounts.

Included in losses and loss adjustment expense for the year ended December 31, 2013 was $4.1 million in catastrophe losses from storm activity in the United States. Included in losses and loss adjustment expense for the year ended December 31, 2013 was $5.0 million related to current accident year large property losses. Offsetting these catastrophe losses was $43.9 million of net favorable loss reserve development on prior accident years primarily due to $55.8 million of favorable development in the general and products liability lines of business. Partially offsetting this net favorable development was $11.9 million of unfavorable development in commercial automobile lines.

Included in losses and loss adjustment expenses for the year ended December 31, 2012 was $12.6 million in catastrophe losses from storm activity in the United States, including $8.2 million from Hurricane Isaac and $2.6 million from Superstorm Sandy. Offsetting these catastrophe losses was $48.0 million of net favorable loss reserve development on prior accident years primarily attributable to $39.2 million of favorable development in the general and products liability lines of business.

Included in losses and loss adjustment expenses for the year ended December 31, 2011 was $7.6 million in catastrophe losses from storm activity in the United States, including the Alabama and Joplin, Missouri tornados and Hurricane Irene. Offsetting these catastrophe losses was $33.8 million of net favorable loss reserve development on prior accident years primarily resulting from $30.2 million of favorable development in the general and products liability lines of business.

The decline in the expense ratio for the year ended December 31, 2013 as compared to the same period in 2012 was primarily attributable to the increase in earned premiums, without a corresponding increase in fixed costs. The increase in the expense ratio for the year ended December 31, 2012 as compared to the same period in 2011 was primarily attributable to declining earned premiums.

Commercial Specialty

The following table summarizes the results of operations for the Commercial Specialty segment:

	Years Ended December 31,
(in millions)	2013			2012			2011
Gross written premiums	$	419.1		$	437.0		$	428.8
Earned premiums	$	299.0		$	317.5		$	316.7
Losses and loss adjustment expenses		194.0			257.0			236.4
Other reinsurance-related expenses		0.9			0.0			0.0
Underwriting, acquisition and insurance expenses		97.4			108.3			106.7
Underwriting income (loss)		6.7			(47.8	)		(26.4	)
Net investment income		22.8			27.6			27.7
Interest expense		(3.8	)		(5.9	)		(5.0	)
Fee (expense) income, net		(4.3	)		1.3			0.1
Income (loss) before income taxes	$	21.4		$	(24.8	)	$	(3.6	)
Loss ratio		65.1	%		81.0	%		74.6	%
Expense ratio		32.7	%		34.1	%		33.7	%
Combined ratio		97.8	%		115.1	%		108.3	%
Loss reserves at December 31	$	653.4		$	660.0		$	622.8

The decline in gross written and earned premiums for the year ended December 31, 2013 as compared to the same periods ended 2012 and 2011 was primarily due to reduced writings in our retail business and public entity units due to planned reductions as we exited unprofitable accounts and implemented underwriting initiatives, partially offset by increasing rates. Gross written premiums for our retail business declined to $75.6 million for the year ended December 31, 2013 compared to $98.7 million for the same period ended 2012. Gross written premiums for our public entity unit declined to $99.9 million for the year ended December 31, 2013 compared to $124.4 million for the same period in 2012. Partially offsetting these declines was increased gross written premiums in our surety business and commercial programs units, as these business units continue to expand.

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Included in losses and loss adjustment expense for the year ended December 31, 2013 was $4.0 million in catastrophe losses for storm activity in the United States. Included in losses and loss adjustment expense for the year ended December 31, 2013 was $7.4 million related to current accident year large losses in our retail, commercial programs and public entity businesses. Additionally, included in losses and loss adjustment expenses was $1.1 million in net unfavorable loss reserve development on prior accident years, primarily attributable to $16.2 million of unfavorable development in general liability due to increases in claim severity and $2.0 million of unfavorable development in automobile liability, offset by favorable development of $9.5 million in workers compensation and $6.8 million of favorable development in short-tail lines.

Included in losses and loss adjustment expenses for the year ended December 31, 2012 was $16.7 million in catastrophe losses from storm activity in the United States, including $8.8 million from Superstorm Sandy. In addition, Commercial Specialty experienced several large non-cat property losses during the year. The Commercial Specialty segment had net unfavorable loss reserve development on prior accident years of $22.2 million primarily attributable to $31.5 million of unfavorable development in general liability due to increases in claim severity and $5.5 million of unfavorable development in the automobile liability lines of business. Partially offsetting this unfavorable development was $10.1 million of favorable development in workers compensation.

Included in losses and loss adjustment expenses for the year ended December 31, 2011 was $21.0 million in catastrophe losses from storm activity in the United States, including Hurricane Irene and the Alabama and Joplin, Missouri tornados. The Commercial Specialty segment had net unfavorable loss reserve development on prior accident years of $8.4 million primarily driven by $16.3 million of unfavorable development in general liability due to increases in claim severity and $2.0 million of unfavorable development in short-tail lines. Partially offsetting the unfavorable reserve development was $5.9 million of favorable development in workers compensation and $3.7 million of favorable development in an assumed Directors and Officers program.

The decline in the expense ratio for the year ended December 31, 2013 as compared to 2012 and 2011 was primarily attributable to a shift of select functions from risk bearing activities to non risk-bearing activities, as we began to develop our fee-based business. The increase in the expense ratio for the years ended December 31, 2012 as compared to the same period in 2011 was primarily attributable to the reductions in earned premiums outpacing the reductions in total underwriting expenses.

As noted above, in 2013 we began to focus on the development of our fee-based operations. As a result, the expenses associated with the fee-based operations have outpaced the income received for these activities, resulting in net fee expense for the year ended December 31, 2013.

International Specialty

The following table summarizes the results of operations for the International Specialty segment:

	Years Ended December 31,
(in millions)	2013			2012			2011
Gross written premiums	$	290.6		$	260.2		$	198.2
Earned premiums	$	142.4		$	130.1		$	101.3
Losses and loss adjustment expenses		79.9			73.5			149.1
Other reinsurance-related expenses		6.2			9.4			0.0
Underwriting, acquisition and insurance expenses		50.1			43.8			30.8
Underwriting income (loss)		6.2			3.4			(78.6	)
Net investment income		8.4			12.3			10.9
Interest expense		(3.3	)		(4.4	)		(3.2	)
Income (loss) before income taxes	$	11.3		$	11.3		$	(70.9	)
Loss ratio		58.7	%		60.9	%		147.1	%
Expense ratio		36.7	%		36.2	%		30.4	%
Combined ratio		95.4	%		97.1	%		177.5	%
Loss reserves at December 31	$	295.6		$	257.3		$	237.9

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Gross written and earned premiums increased for the year ended December 31, 2013 in comparison to the same periods in 2012 and 2011 primarily as a result of continued growth in our Brazil operations and in our excess casualty and professional lines units, while gross written premiums for the property reinsurance lines remained consistent. Gross written premiums for the property reinsurance lines were $134.0 million, $132.6 million and $133.8 million for the years ended December 31, 2013, 2012 and 2011, respectively. Gross written premiums for the excess casualty and professional lines unit were $91.0 million, $80.8 million and $64.4 million for the years ended December 31, 2013, 2012 and 2011, respectively. Gross written premiums for our Brazil operations, which began writing premiums in 2012, were $65.6 million and $46.8 million for the years ended December 31, 2013 and 2012, respectively.

Losses and loss adjustment expenses for the year ended December 31, 2013 included $16.5 million in catastrophe losses primarily attributable to $6.6 million resulting from the Canadian floods, $4.6 million from the European floods and $4.8 million from the German hailstorm. Prior year loss reserve development was negligible.

Losses and loss adjustment expenses for the year ended December 31, 2012 included $24.7 million in catastrophe losses from storm activity in the United States, including $23.6 million from Superstorm Sandy. In addition, International Specialty experienced $6.0 million in losses related to crop exposures. Partially offsetting these current accident year losses was $7.2 million of net favorable loss reserve development on prior accident years primarily attributable to $7.4 million of favorable development in short-tail non-catastrophe losses.

Losses and loss adjustment expenses for the year ended December 31, 2011 included $118.1 million in catastrophe losses including $75.3 million resulting from the Japan and New Zealand earthquakes, $24.9 million from the Thailand and Australia floods and the Danish cloudburst and $17.9 million from storms in the United States including the Alabama and Joplin, Missouri tornados and Hurricane Irene and aggregate reinsurance covers losses of $9.3 million. Partially offsetting these 2011 accident year losses was $4.6 million of net favorable reserve development on prior accident year’s loss reserves, primarily from $7.0 million attributable to short-tail non-catastrophe losses offset by $2.5 million of unfavorable development in long-tail lines primarily due to the 2010 Deepwater Horizon incident.

The increase in the expense ratio for the year ended December 31, 2013 as compared to the same periods in 2012 and 2011 was primarily attributable to the expenses for our Brazil operations continuing to out-pace earned premiums.

Syndicate 1200

The following table summarizes the results of operations for the Syndicate 1200 segment:

	Years Ended December 31,
(in millions)	2013			2012			2011
Gross written premiums	$	583.9		$	533.4		$	438.5
Earned premiums	$	401.7		$	337.9		$	259.3
Losses and loss adjustment expenses		208.6			184.0			222.6
Other reinsurance-related expenses		6.7			7.5			0.0
Underwriting, acquisition and insurance expenses		156.2			133.9			119.0
Underwriting income (loss)		30.2			12.5			(82.3	)
Net investment income		11.0			15.3			17.2
Interest expense		(3.3	)		(3.7	)		(3.2	)
Fee (expense) income, net		(0.6	)		4.0			1.3
Income (loss) before income taxes	$	37.3		$	28.1		$	(67.0	)
Loss ratio		52.8	%		55.7	%		85.8	%
Expense ratio		39.6	%		40.5	%		45.9	%
Combined ratio		92.4	%		96.2	%		131.7	%
Loss reserves at December 31	$	777.0		$	738.9		$	755.3

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In 2013, we maintained our direct participation in Syndicate 1200 at 79%, consistent with our 2012 participation and up from the 69% participation in 2011. For the year ended December 31, 2013, the property division wrote $270.8 million in gross written premiums, compared to $253.6 million and $250.0 million for the same periods in 2012 and 2011, respectively. The increase in gross written premiums was primarily within the real estate owned and personal accident classes. The casualty division wrote $205.5 million, $172.5 million and $124.0 million of gross written premiums for the years ended December 31, 2013, 2012 and 2011, respectively. The increase in the casualty division was primarily attributable to growth within the general liability class. The specialty division wrote $81.1 million, $83.6 million and $54.1 million for the years ended December 31, 2013, 2012 and 2011, respectively. The decline in gross written premiums for 2013 as compared to 2012 was primarily attributable to reduced writings in the offshore energy classes as we reduced our exposure in the Gulf of Mexico and reduced writings in the yachts and hull classes due to reduced profitability. The aerospace division wrote $26.4 million, $23.3 million and $9.7 million in premiums for the years ended December 31, 2013, 2012 and 2011, respectively. We continue to grow the aerospace division, which began writing business in the first half of 2011.

The increase in earned premiums in 2013 as compared to 2012 and 2011 is primarily attributable to the increase in gross written premiums discussed above.

Losses and loss adjustment expenses are reported net of losses ceded to the trade capital providers. The Syndicate 1200 segment reported no catastrophe losses for the year ended December 31, 2013. Included in losses and loss adjustment expense for the year ended December 31, 2013 were current accident year large losses of $4.4 million resulting from two onshore energy losses. The Syndicate 1200 segment had net favorable loss development of $6.2 million primarily attributable to $12.8 million of favorable development in various property classes, partially offset by $6.3 million of unfavorable development in liability lines associated with municipality business.

Included in losses and loss adjustment expenses for the year ended December 31, 2012 was $21.2 million of catastrophe losses consisting of $18.2 million from Superstorm Sandy and $3.0 million from Hurricane Isaac. The Syndicate 1200 segment had net favorable loss development of $9.7 million primarily attributable to favorable development in the property facultative, North American binder and Directors and Officers classes of business, partially offset by unfavorable development in the general liability property class of business.

Included in losses and loss adjustment expenses for the year ended December 31, 2011 was $61.9 million of catastrophe losses consisting of $29.2 million from the New Zealand and Japan earthquakes, $21.8 million from the Thailand and Australia floods and the Danish Cloudburst and $10.9 million from storms in the United States. Additionally, included in losses and loss adjustment expenses for 2011 was $18.7 million in unfavorable prior year development primarily driven by a reduction in the estimate of future reinsurance recoveries for various liability classes of business and unfavorable development related to the medical malpractice and discontinued liability lines of business where the claims experience was worse than expected.

On December 31, 2012, Syndicate 1200 entered into a whole account quota share contract covering the 2009 and prior years of account. The counterparty was another syndicate within Lloyd’s. An immaterial deferred gain was recorded as a result of this transaction.

The decline in the expense ratio for the year ended December 31, 2013 as compared to the same period in 2012 was primarily attributable to reduced fixed costs as a percentage of earned premiums. The decrease in the expense ratio for the year ended December 31, 2012 as compared to the same period in 2011 was primarily attributable to both a change in business mix and a focus on reducing acquisiton costs.

Fee (expense) income, net represents fees and profit commission derived from the management of third party capital for our underwriting syndicate at Lloyd’s. The fee expense, net for the year ended December 31, 2013 was primarily due to the allocation of certain compensation expense not borne by the Syndicate. The increase in fee income, net for the year ended December 31, 2012 as compared to 2011 was primarily attributable to a reduction in the expenses related to the generation of the fee income.

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Run-off Lines

The following table summarizes the results of operations for the Run-off Lines segment:

	Years Ended December 31,
(in millions)	2013			2012			2011
Earned premiums	$	0.5		$	1.7		$	(0.6	)
Losses and loss adjustment expenses		15.5			9.8			7.9
Underwriting, acquisition and insurance expenses		4.6			2.8			8.3
Underwriting loss		(19.6	)		(10.9	)		(16.8	)
Net investment income		10.8			12.5			13.3
Interest expense		(1.8	)		(2.5	)		(1.8	)
Loss before income taxes	$	(10.6	)	$	(0.9	)	$	(5.3	)

Earned premiums for the years ended December 31, 2013, 2012 and 2011 were primarily attributable to adjustments resulting from final audits, reinstatement premiums and other adjustments on policies previously written.

Through our subsidiary Argonaut Insurance Company, we are exposed to asbestos liability at the primary level through claims filed against our direct insureds, as well as through its position as a reinsurer of other primary carriers. Argonaut Insurance Company has direct liability arising primarily from policies issued from the 1960s to the early 1980s, which pre-dated policy contract wording that excluded asbestos exposure. The majority of the direct policies were issued on behalf of small contractors or construction companies. We believe that the frequency and severity of asbestos claims for such insureds is typically less than that experienced for large, industrial manufacturing and distribution concerns.

Argonaut Insurance Company also assumed risk as a reinsurer, primarily for the period from 1970 to 1975, a portion of which was assumed from the London market. Argonaut Insurance Company also reinsured risks on policies underwritten by domestic carriers. Such reinsurance typically provided coverage for limits attaching at a relatively high level, which are payable only after other layers of reinsurance are exhausted. Some of the claims now being filed on policies reinsured by Argonaut Insurance Company are on behalf of claimants who may have been exposed at some time to asbestos incorporated into buildings they occupied, but have no apparent medical problems resulting from such exposure. Additionally, lawsuits are being brought against businesses that were not directly involved in the manufacture or installation of materials containing asbestos. We believe that a significant portion of claims generated out of this population of claimants may result in incurred losses generally lower than the asbestos claims filed over the past decade and could be below the attachment level of Argonaut Insurance Company.

Losses and loss adjustment expenses for the year ended December 31, 2013 included $10.5 million of unfavorable development in general liability lines resulting from asbestos exposure. The unfavorable development was driven by increasing defense costs in the primary book of business, higher than expected loss activity in the assumed book of business and commutations and settlements in 2013. Other run-off lines recorded $4.4 million in unfavorable development, including $2.0 million in unfavorable development in medical malpractice liability due to the loss of the New York Liquidation Bureau funding for structured annuity payments.

Losses and loss adjustment expenses for the year ended December 31, 2012 included $9.8 million in net unfavorable loss reserve development on prior accident years primarily attributable to $9.1 million of unfavorable development in general liability lines resulting from asbestos exposure. The unfavorable development was driven by increasing defense costs in the primary book of business and increasing settlement costs in the assumed book of business.

Losses and loss adjustment expenses for the year ended December 31, 2011 included $7.9 million in net unfavorable loss reserve development on prior accident years primarily due to $11.7 million of unfavorable development in general liability lines resulting from asbestos and environmental exposure, $4.6 million of unfavorable development on legacy reinsurance claims primarily related to Hurricanes Katrina, Rita and Wilma, and unfavorable development related to the unwinding of the workers compensation reserve discount. The unfavorable development was partially offset by favorable development on workers compensation including the collection of a contribution settlement from another insurer for a California indemnity claim and favorable development in other lines.

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Underwriting, acquisition and insurance expenses for the Run-off Lines segment consists primarily of administrative expenses. Underwriting expense for the year ended December 31, 2012 were reduced $2.6 million due to a reduction in insurance assessments. Bad debt expense, net of recoveries, on uncollectible reinsurance recoverable balances of $3.4 million was included for the year ended December 31, 2011. Absent these items, underwriting expenses were comparable for the years presented.

The following table represents a reconciliation of total gross and net reserves for the Run-off Lines for each of the years in the three-year period ended December 31, 2013. Amounts in the net column are reduced by reinsurance recoverables.

(in millions)	2013						2012						2011
	Gross			Net			Gross			Net			Gross			Net
Asbestos and environmental:
Loss reserves, beginning of the year	$	64.6		$	58.9		$	75.3		$	68.2		$	90.2		$	82.7
Incurred losses		9.8			11.0			9.4			9.1			14.0			11.7
Losses paid		(16.9	)		(16.6	)		(20.1	)		(18.4	)		(28.9	)		(26.2	)
Loss reserves—asbestos and environmental, end of year		57.5			53.3			64.6			58.9			75.3			68.2
Risk management reserves		264.3			171.5			272.6			191.7			296.1			206.1
Run-off reinsurance reserves		5.8			5.8			14.4			14.4			24.5			24.5
Other run-off lines		4.9			4.6			6.7			6.0			7.4			6.9
Total loss reserves—Run-off Lines	$	332.5		$	235.2		$	358.3		$	271.0		$	403.3		$	305.7

The following table represents the components of gross loss reserves for the Run-off Lines for each of the years in the three-year period ended December 31:

(in millions)	2013		2012		2011
Asbestos:
Direct
Case reserves	$	1.7	$	2.0	$	2.8
Unallocated loss adjustment expense (“ULAE”)		1.3		1.7		2.0
IBNR		6.4		4.3		2.5
Total direct written reserves		9.4		8.0		7.3
Assumed domestic
Case reserves		15.7		18.4		21.7
ULAE		2.2		2.7		3.1
IBNR		15.8		17.4		19.7
Total assumed domestic reserves		33.7		38.5		44.5
Assumed London
Case reserves		5.8		5.9		6.2
ULAE		0.4		0.6		0.7
IBNR		1.4		2.5		4.0
Total assumed London reserves		7.6		9.0		10.9
Total asbestos reserves		50.7		55.5		62.7
Environmental:
Case reserves		3.3		3.5		4.2
ULAE		0.3		0.4		0.5
IBNR		3.2		5.2		7.9
Total environmental reserves		6.8		9.1		12.6
Risk management reserves		264.3		272.6		296.1
Run-off reinsurance reserves		5.8		14.4		24.5
Other run-off lines		4.9		6.7		7.4
Total loss reserves—Run-off Lines	$	332.5	$	358.3	$	403.3

We perform an extensive actuarial analysis of the asbestos and environmental reserves on at least an annual basis. We continually monitor the status of the claims, and may make adjustments outside of the annual review period. The review entails a detailed analysis of our direct and assumed exposure. Management considers the indications from the various actuarial methods from that

54

review to determine their best estimate of the asbestos and environmental losses and loss adjustment expense reserves. Management primarily relied on a method that projects future reported claims and severities, with some weight given to other methods. This method relies most heavily on our historical claims and severity information, whereas other methods rely more heavily on industry information. The method produces an estimate of losses that have been incurred but not yet reported based on projections of future claims and the average severity for those future claims. The severities were calculated based on our specific data and in management’s opinion best reflect our liabilities based upon the insurance policies issued.

The following table represents a reconciliation of the number of asbestos and environmental claims outstanding for each of the years in the three-year period ended December 31, 2013:

(in millions)	2013		2012		2011
Open claims, beginning of the year		1,784		2,122		2,690
Claims closed during the year		477		540		769
Claims opened during the year		172		202		201
Open claims, end of the year		1,479		1,784		2,122

The following table represents gross payments on asbestos and environmental claims for each of the years in the three-year period ended December 31, 2013:

(in millions)	2013		2012		2011
Gross payments on closed claims	$	6.7	$	10.3	$	13.3
Gross payments on open claims		10.2		8.8		14.1
Total gross payments	$	16.9	$	19.1	$	27.4

Because of the types of coverages within the Run-off Lines of business still being serviced by Argonaut Insurance Company, a significant amount of subjectivity and uncertainty exists in establishing the reserves for losses and loss adjustment expenses. Factors that increase these uncertainties are: (1) lack of historical data, (2) inapplicability of standard actuarial projection techniques, (3) uncertainties regarding ultimate claim costs, (4) coverage interpretations and (5) the judicial, statutory and regulatory environments under which these claims may ultimately be resolved. Significant uncertainty remains as to our ultimate liability due to the potentially long waiting period between exposure and emergence of any bodily injury or property damage and the resulting potential for involvement of multiple policy periods for individual claims. Due to these uncertainties, the current trends may not be indicative of future results. Although management has determined and recorded its best estimate of the reserves for losses and loss adjustment expenses for Run-off Lines, current judicial and legislative decisions continue to broaden liability, expand policy scopes and increase the severity of claims payments. As a result of these and other recent developments, the uncertainties inherent in estimating ultimate loss reserves are heightened, further complicating the already complex process of determining loss reserves. The industry as a whole is involved in extensive litigation over these coverages and liability issues, and must contend with the continuing uncertainty in its effort to quantify these exposures.

Liquidity and Capital Resources

The primary sources of cash flow for Argo Group and its subsidiaries are premiums, reinsurance recoveries, proceeds from sales and redemptions of investments and investment income. The primary cash outflows are claim payments, loss adjustment expenses, reinsurance costs and operating expenses. The nature of insurance is that cash collected for premiums written is invested, interest and dividends are earned thereon and loss and settlement expenses are paid out over a period of years. This period of time varies by line of business and by the circumstances surrounding each claim. A substantial portion of our losses and loss expenses are paid out after more than one year. Additional cash outflow occurs through payments of underwriting and acquisition costs such as commissions, taxes, payroll and general overhead expenses. Management believes that cash receipts from premiums, proceeds from investment sales and redemptions and investment income are sufficient to cover cash outflows in the foreseeable future. Should the need for additional cash arise, we believe we have access to additional sources of liquidity.

Cash provided (used) by operating activities can fluctuate due to timing difference in the collection of premiums and reinsurance recoveries and the payment of losses and expenses. For the year ended December 31, 2013 cash used by operating activities was $0.2 million compared to cash provided by operating activities of $30.5 million for the year ended December 31, 2012

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and cash used by operating activities of $17.7 million for the year ended December 31, 2011. The decrease in cash flows from operations in 2013 compared to 2012 was primarily due to net cash payment of $86.2 million in partial settlement of a whole account quota share contract covering the Syndicate 1200 segment loss reserves for the 2009 and prior years of account. The source of cash used to settle this reinsurance payable was the sale of fixed maturity assets, and is included in the cash from investing activities of our Statements of Cash Flow. The increase in cash flows from operations in 2012 compared to 2011 was primarily attributable to increased collections on our reinsurance recoverables on paid losses and a decrease in claim payments.

For the year ended December 31, 2013, net cash provided by investing activities was $120.8 million compared to net cash used by investing activities of $3.7 million for the year ended December 31, 2012 and cash provided by investing activities of $102.1 million for the year ended December 31, 2011. The increase in cash flows from investing activities from 2012 to 2013 was mainly the result of the sale of fixed maturity assets used to settle Syndicate 1200 reinsurance payable. The decrease in cash flows from investing activities in 2012 compared to 2011 was primarily a result of fewer sales of investments as the positive inflow of cash from operations combined with the excess of the proceeds from the issuance of the senior unsecured fixed rate notes assisted in meeting operational activities. As of December 31, 2013, 2012 and 2011, $351.6 million, $234.3 million and $294.6 million, respectively, of the investment portfolio were invested in short-term investments.

For the years ended December 31, 2013, 2012 and 2011, net cash used by financing activities was $59.5 million, $33.8 million and $61.6 million, respectively. During 2013, our use of cash was primarily attributed to the repurchase of approximately 1.1 million shares of our common stock for a total cost of $46.5 million and the payment of dividends to our shareholders totaling $15.8 million. During 2012, our use of cash was attributed to $117.2 million for the redemption of our two fixed rate trust preferred securities, the repurchase of approximately 1.5 million shares of our common stock for a total cost of $44.2 million and the payment of dividends to our shareholders totaling $12.3 million. In 2012, the use of cash was offset by $138.7 million in net cash proceeds from the issuance of senior unsecured fixed rate notes. During 2011, our use of cash was primarily attributed to the repurchase of approximately 1.6 million shares of our common stock for a total cost of $49.5 million, and the payment of dividends to our shareholders totaling $13.1 million.

Argo Group and its other holding company subsidiaries are largely dependent on dividends and other permitted payments from their insurance and reinsurance subsidiaries to pay cash dividends to their shareholders, for debt service and for their operating expenses. The ability of our insurance and reinsurance subsidiaries to pay dividends to us is subject to certain restrictions imposed by the jurisdictions of domicile that regulate our immediate insurance and reinsurance subsidiaries and each jurisdiction has calculations for the amount of dividends that an insurance and reinsurance company can pay without the approval of the insurance regulator.

In addition, our ability to receive dividends from our downstream subsidiaries is subject to the ability of each parent corporation within the corporate ownership structure to receive dividends from its respective subsidiary(ies), based upon the subsidiary’s domiciliary regulations. Argo Re is the primary direct subsidiary of Argo Group and is subject to Bermuda insurance laws. Argo Ireland is indirectly owned by Argo Re and is a mid-level holding company subject to Irish laws, and its primary subsidiary is Argo Group US. Argo Group US is a mid-level holding company subject to Delaware laws. Argo Group US is the parent of all of our U.S. insurance subsidiaries.

For the year ended December 31, 2013, Argo Re paid a cash dividend of $84.5 million to Argo Group which was used to repay an intercompany note. For the year ended December 31, 2013, Argo Group US received dividends of $76.2 million from Colony, $24.8 million from Argonaut Insurance Company and $9.5 million from Rockwood.

The payment of dividends by Argo Re is limited under Bermuda insurance laws, which require Argo Re to maintain certain measures of solvency and liquidity. As of December 31, 2013, the unaudited statutory capital and surplus of Argo Re was estimated to be $1,218.2 million and the amount required to be maintained was estimated to be $343.9 million, thereby allowing Argo Re the potential to pay dividends or capital distributions within the parameters of the solvency and liquidity margins. We believe that the dividend and capital distribution capacity of Argo Re will provide us with sufficient liquidity to meet the operating and debt service commitments, as well as other obligations.

During 2014, Argo Group US may be permitted to receive dividends from its subsidiaries as follows: Colony - $41.5 million, Argonaut Insurance Company - $24.8 million and Rockwood -$18.1 million. Business and regulatory considerations may impact the amount of dividends actually paid, and prior approval of dividend payments may be required.

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On April 30, 2010, each of Argo Group International Holdings, Ltd., Argo Group US, Argo International Holdings Limited, and Argo Underwriting Agency Limited (the “Borrowers”) entered into a $150,000,000 Credit Agreement (“Credit Agreement”) with a syndicate of commercial banks. On July 22, 2011, the Borrowers entered into Amendment No. 2 to the Credit Agreement, which increased the revolving credit facility under the Credit Agreement from $150.0 million to $170.0 million, extended the maturity date from April 30, 2013 to April 30, 2014, and modified certain other terms. Borrowings under the Credit Agreement may be used for general corporate purposes, including working capital and permitted acquisitions, and each of the Borrowers has agreed to be jointly and severally liable for the obligations of the other Borrowers under the Credit Agreement. The Credit Agreement contains customary events of default. If an event of default occurs and is continuing, the Borrowers could be required to repay all amounts outstanding under the Credit Agreement. Lenders holding more than 51% of the loans and commitments under the Credit Agreement may elect to accelerate the maturity of the loans under the Credit Agreement upon the occurrence and during the continuation of an event of default. No defaults or events of defaults have occurred as of the date of this filing. Currently, we do not have any amounts due under the $170.0 million credit facility. The credit facility allows up to $15.0 million of the facility to be used for letters of credit (“LOCs”) subject to availability under the line. Currently, we have $0.2 million in LOCs issued and outstanding under the credit facility.

We have two additional LOC facilities totaling $500.0 million that allow us to provide LOCs to our ceding companies if such LOC is required under the terms of the contract and to Lloyd’s to be filed on behalf of Argo (No. 604) Limited, our corporate member at Lloyd’s. All of the facilities require us to provide collateral in the form of fixed maturity securities or cash to the issuing bank as security for the outstanding LOCs. We also have a previously issued facility that has since been canceled under which we still have outstanding LOCs. We no longer have the ability to issue new LOCs from this facility. We must transfer eligible assets to collateral accounts prior to each respective bank issuing an LOC. Since eligible assets include fixed maturity investments, such securities need not be sold in order to qualify as eligible collateral. At December 31, 2013, we have pledged assets with a fair value of $98.6 million to support outstanding LOCs.

LOCs have been filed with Lloyd’s by trade capital providers as part of the terms of whole account quota share reinsurance contracts entered into by the trade capital providers. In the event such LOCs are funded, the outstanding balance would be the responsibility of the trade capital providers.

Under certain insurance programs (i.e., large deductible programs and surety bonds) and various reinsurance agreements, collateral and letters of credit are held for our benefit to secure performance of insureds and reinsurers in meeting their obligations. At December 31, 2013, the amount of such collateral and LOCs held under insurance and reinsurance agreements were $861.1 million and $335.5 million, respectively. Collateral can be provided in the form of trust accounts. As we are the beneficiary of these trust accounts only to secure future performance, these amounts are not reflected in our Consolidated Balance Sheets. Collateral provided by an insured or reinsurer may exceed or fall below their total outstanding obligation.

In September 2012, through our wholly owned subsidiary Argo Group US, we issued $143,750,000 aggregate principal amount of Argo Group US’s 6.5% Senior Notes due September 15, 2042 (the “Notes”). The Notes bear interest at 6.5%, payable quarterly in cash in arrears on the 15th day of March, June, September and December of each year, beginning on December 15, 2012.

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The Notes are unsecured and unsubordinated obligations of Argo Group US and rank equally in right of payment with all of Argo Group US’s other unsecured and unsubordinated debt. The Notes are guaranteed on a full and unconditional senior unsecured basis by Argo Group. The Notes may be redeemed, for cash, in whole or in part, on or after September 15, 2017, at Argo Group US’s option, at any time and from time to time, prior to maturity at a redemption price equal to 100% of the principal amount of the Notes to be redeemed, plus accrued but unpaid interest on the principal amount being redeemed to, but not including, the redemption date. The proceeds, net of issuance costs, from the sale of the Notes were $138.7 million and were used to repay $118.6 million of principal related to two of our trust preferred securities, with the remainder used for general corporate purposes.

Through a series of trusts, that are wholly-owned subsidiaries (non-consolidated), we issued trust preferred securities. The interest on the underlying debentures is variable with the rates being reset quarterly and subject to certain interest rate ceilings. Interest payments are payable quarterly. The debentures are all unsecured and are subordinated to other indebtedness. All are redeemable subject to certain terms and conditions at a price equal to 100% of the principal plus accrued and unpaid interest.

On October 1, 2012, we gave notice of redemption to the trustee of our 8.85% PXRE Capital Trust I $103,093,000 Junior Subordinated Debt Securities (“Capital Trust I”). Capital Trust I was redeemed on November 13, 2012 at a redemption price equal to 102.090% of its principal amount, plus accrued and unpaid interest through the date of redemption. Additionally, on October 8, 2012, we gave notice of redemption to the trustee of our 9.75% PXRE Capital Trust III $15,464,000 Junior Subordinated Debt Securities (“Capital Trust III”). Capital Trust III was redeemed on November 23, 2012 at a redemption price equal to 100.975% of its principal amount, plus accrued and unpaid interest through the date of redemption. Interest on Capital Trust I and Capital Trust III ceased to accrue on and after the redemption dates. Subsequent to redemption, we received $3.1 million and $0.5 million for our ownership in Capital Trust I and Capital Trust III, respectively. Redemption of Capital Trust I and Capital Trust III resulted in recognition of expense for a call premium of $2.1 million and $0.1 million, respectively, shown in “Debt extinguishment costs” in our Consolidated Statement of Income (Loss) for the year ended December 31, 2012. Capital Trust I had an unamortized discount of $0.4 million that was charged off to “Interest expense” in our Consolidated Statement of Income (Loss) for the year ended December 31, 2012.

A summary of our outstanding junior subordinated debentures at December 31, 2013 is presented below:

(in millions)
Issue Date	Trust Preferred Pools	Maturity	Redeemable		Rate Structure	Interest Rate at December 31, 2013	Amount
Argo Group
05/15/2003	PXRE Capital Statutory Trust II	05/15/2033		05/15/2008	3M LIBOR + 4.10%	4.34%	$18.1
10/29/2003	PXRE Capital Trust V	10/29/2033		10/29/2008	3M LIBOR + 3.85%	4.09%	20.6
11/06/2003	PXRE Capital Trust VI	09/30/2033		09/30/2008	3M LIBOR + 3.90%	4.15%	10.3
Argo Group US
05/15/2003	Argonaut Group Statutory Trust I	05/15/2033		05/15/2008	3M LIBOR + 4.10%	4.34%	15.5
12/16/2003	Argonaut Group Statutory Trust III	01/08/2034		01/08/2009	3M LIBOR + 4.10%	4.34%	12.3
04/29/2004	Argonaut Group Statutory Trust IV	04/29/2034		04/29/2009	3M LIBOR + 3.85%	4.09%	13.4
05/26/2004	Argonaut Group Statutory Trust V	05/24/2034		05/24/2009	3M LIBOR + 3.85%	4.09%	12.3
05/12/2004	Argonaut Group Statutory Trust VI	05/12/2034		06/01/2009	3M LIBOR + 3.80%	4.04%	13.4
09/17/2004	Argonaut Group Statutory Trust VII	12/15/2034		09/17/2009	3M LIBOR + 3.60%	3.84%	15.5
09/22/2004	Argonaut Group Statutory Trust VIII	09/22/2034		09/22/2009	3M LIBOR + 3.55%	3.80%	15.5
10/22/2004	Argonaut Group Statutory Trust IX	12/15/2034		12/15/2009	3M LIBOR + 3.60%	3.84%	15.5
09/15/2005	Argonaut Group Statutory Trust X	09/15/2035		09/15/2010	3M LIBOR + 3.40%	3.64%	30.9
	Total Outstanding						$193.3

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We assumed debt through the acquisition of Argo International. These notes are unsecured. All are redeemable subject to certain terms and conditions at a price up to 100% of the principal plus accrued and unpaid interest. Interest on the U.S. Dollar and Euro notes is due semiannually and quarterly, respectively. A summary of the notes outstanding at December 31, 2013 is presented below:

(in millions)
Issue Date	Currency	Maturity	Redeemable		Rate Structure	Interest Rate at December 31, 2013	Amount
12/08/2004	U.S. Dollar	11/15/2034		12/08/2009	6 month LIBOR + 4.2%	4.60%	$6.5
09/06/2005	Euro	08/22/2035		09/06/2010	3 month LIBOR + 4.0%	4.22%	16.3
10/31/2006	U.S. Dollar	01/15/2036		01/15/2011	6 month LIBOR + 4.0%	4.40%	10.0
10/31/2006	Euro	11/22/2036		10/31/2011	3 month LIBOR + 4.0%	4.22%	14.3
06/08/2007	Euro	09/15/2037		06/08/2012	3 month LIBOR + 3.9%	4.12%	18.4
							$65.5

Throughout 2013, 2012 and 2011, we had no preferred shares outstanding.

For the year ended December 31, 2013, our Board of Directors declared quarterly dividends in the amount of $0.60 per share ($0.59 per share adjusted for 10% stock dividend). Cash dividends paid for the year ended December 31, 2013 totaled $15.8 million. On February 18, 2014, our Board of Directors declared a quarterly cash dividend in the amount of $0.15 on each share of common stock outstanding. The dividend will be paid on March 17, 2014 to shareholders of record on March 3, 2014. The declaration and payment of future dividends to our shareholders is at the discretion of our Board of Directors and will depend upon our financial results, cash requirements, future prospects and other factors deemed relevant by our Board of Directors.

On February 18, 2011, our Board of Directors authorized the repurchase of up to $150.0 million of our common shares. The 2011 Repurchase Authorization supersedes the November 13, 2007 repurchase authorization which also had authorized the repurchase of up to $150.0 million of our common shares. On November 5, 2013, our Board of Directors authorized the repurchase of up to $150.0 million of our common shares. The 2013 Repurchase Authorization supersedes the 2011 Repurchase Authorization such that no further amounts could be repurchased under the 2011 Repurchase Authorization. These shares are being held as treasury shares in accordance with the provisions of the Bermuda Companies Act 1981. As of December 31, 2013, availability under the 2013 Repurchase Authorization for future repurchases of our common shares was $143.6 million.

We invest excess cash in a variety of investment securities. As of December 31, 2013, our investment portfolio consisted of 69.0% fixed maturities, 13.1% equity securities, 9.3% other investments and 8.6% short-term investments (based on fair value) compared to 75.1% fixed maturities, 12.4% equity securities, 6.9% other investments and 5.6% short-term investments as of December 31, 2012. We classify the majority of our investment portfolio as available-for-sale; resulting in these investments being reported at fair market value, with unrealized gains and losses, net of tax, being reported as a component of shareholders’ equity. At December 31, 2013, no investments were designated as trading. No issuer (excluding United States Government and United States Governmental agencies) of fixed maturity or equity securities represents more than 3.6% of shareholders’ equity at December 31, 2013.

Our insurance and reinsurance subsidiaries require liquidity and adequate capital to meet ongoing obligations to policyholders and claimants and fund operating expenses. During the year ended December 31, 2013, cash flow used by operations was $0.2 million. Based on current premium volumes and other measures of capital deployed in our business, we determined we had excess capital and, therefore, returned capital to our shareholders through the share buy-back program and through dividend payments to our shareholders. We believe our liquidity generated from operations and, if required, from our investment portfolio, will be sufficient to meet our obligations for the foreseeable future. We believe we have access to various sources of liquidity including cash, investments and the ability to borrow under our revolving credit facility. Additionally, we continue to have access to the debt and equity markets, though we currently do not foresee needing access to these sources of capital.

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We believe we maintain sufficient liquidity to pay claims and expenses, as well as satisfy our commitments in the event of unforeseen events such as reinsurer insolvencies, inadequate premium rates, or reserve deficiencies.

We maintain a comprehensive reinsurance program at levels management considers adequate to diversify risk and safeguard our financial position. Increases in the costs of this program, or the failure of our reinsurers to meet their obligations in a timely fashion, may have a negative impact on liquidity.

Credit Risk

Credit risk is a major factor of our overall enterprise risk, and we have established policies and procedures to evaluate our exposure to credit risk, particularly with respect to our investment holdings and our receivable balances. In particular, we are exposed to credit risk on losses recoverable from reinsurers and receivables from insureds. Downturns in one sector or market can adversely impact other sectors and may result in higher credit exposure. We do not currently use credit default swaps to mitigate our credit exposure from either investments or counterparties.

We invest in the debt securities markets, which exposes us to credit risk. As a consequence of extending credit and/or carrying investment positions, we have exposure to credit risk arising from the uncertainty associated with a financial instrument obligor’s ability to make timely principal and/or interest payments. We attempt to mitigate this risk by limiting credit concentrations, diversification and frequently monitoring the credit quality of issuers and counterparties.

We control our credit exposure related to receivables by limiting exposure to any one counterparty and evaluating the financial strength of our reinsurance counterparties, including generally requiring minimum credit ratings.

Additional information relating to our investment strategy and credit risk is included under Item 7A, “Quantitative and Qualitative Disclosures about Market Risk”.

Transactions with Related Parties

In 2013, our Surety unit received a submission through its established broker network to issue approximately $13 million of surety bonds on behalf of Kinetica Partners, LLC (“Kinetica”) in connection with a Gulf of Mexico pipeline project. Mr. Gary Woods, Chairman of our Board of Directors, is the President of Kinetica, and beneficially owns 10% of Kinetica through a family trust. The submission was underwritten, priced and bound in the ordinary course of business by the Surety unit. The terms and conditions of the surety bonds that were issued and the premium charged to Kinetica for issuance of the bonds, were consistent with those routinely applied and charged for similarly situated risks bound for unrelated third parties. Per the Surety unit’s standard requirements in connection with the issuance of surety bonds, Kinetica and Mr. Woods, in his personal capacity, among others, executed our Surety unit’s standard form of indemnity agreement holding our Surety unit harmless against any and all losses and expenses incurred resulting from the issuance of the surety bonds.

Off-Balance Sheet Arrangements

We have committed to invest up to a total of $185.0 million in a series of private equity related limited partnerships. As of December 31, 2013, we have a remaining obligation to the partnerships to invest up to an additional $35.7 million, which can be called at any time. We have not recorded this commitment in our consolidated financial statements. The investment will be recorded at such time as the capital partnership requires the additional investment. Additionally, we have not recorded the liabilities for our operating leases in our consolidated financial statements.

Other than as described in the immediately preceding paragraph, we have not entered into any off-balance sheet arrangements, as defined by Item 303(a)(4) of Regulation S-K at December 31, 2013.

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Contractual Obligations

Our estimated contractual obligations and commitments as of December 31, 2013 were as follows:

	Payments Due by Period
(in millions)	Total		Less than 1 year		1 - 3 years		3 - 5 years		Thereafter
Long-term debt:
Junior subordinated debentures (1)	$	354.0	$	7.8	$	15.8	$	15.8	$	314.6
Senior unsecured fixed rate notes (2)		412.4		9.3		18.7		18.7		365.7
Floating rate loan stock (3)		128.2		2.8		5.6		5.6		114.2
Note payable		0.8		0.8		0.0		0.0		0.0
Operating leases		57.6		11.1		19.3		13.4		13.8
Purchase obligations (4)		36.7		18.9		17.8		0.0		0.0
Contingent consideration for asset purchase (5)		6.5		0.0		6.5		0.0		0.0
Other long-term liabilities:
Claim payments (6)		3,230.3		955.7		1,079.7		498.4		696.5
Multi-year reinsurance contract (7)		106.0		26.5		53.0		26.5		0.0
Catastrophe bond program		94.6		18.1		47.2		29.3		0.0
Partnership commitments (8)		35.7		35.7		0.0		0.0		0.0
Total contractual obligations	$	4,462.8	$	1,086.7	$	1,263.6	$	607.7	$	1,504.8

⁽¹⁾  Interest only on Junior Subordinated Debentures through 2033. Interest calculated based on the rate in effect at December 31, 2013. Principal due beginning May 2033.

⁽²⁾  Interest only on Senior Unsecured Fixed Rate Notes through 2042. Interest calculated based on the rate in effect at December 31, 2013. Principal due September 2042.

⁽³⁾  Interest only on Floating Rate Loan Stock through 2034. Interest calculated based on the rate in effect at December 31, 2013. Principal due beginning November 2034.

⁽⁴⁾  Purchase obligations consist primarily of software, hardware and equipment servicing and software licensing fees.

⁽⁵⁾  Contingent consideration for asset purchase is estimated at the maximum payout if profit targets are met.

⁽⁶⁾  Claim payments do not have a contractual maturity; exact timing of claim payments cannot be predicted with certainty. The above table estimates timing of claim payments based on historical payment patterns and excludes the benefits of reinsurance recoveries.

⁽⁷⁾  Multi-year reinsurance contract’s base terms, as reflected in the above table, include premium per annum of $26.5 million during the coverage period of January 1, 2014 to December 31, 2017. Based on the loss results of risks covered by the contract, additional annual premium installments ranging between $13 million and $39 million may be due beginning after December 31, 2014. The contract contains an early termination clause whereby we may terminate the contract at December 31, 2015 or December 31, 2016, subject to meeting certain contractual stipulations.

⁽⁸⁾  Argo Group has invested in multiple limited partnership agreements and can be called to fulfill the obligations at any time.

Recent Accounting Pronouncements

The discussion of the adoption and pending adoption of recently issued accounting policies is included in Note 1, “Business and Significant Accounting Policies” in the Notes to the Consolidated Financial Statements, included in Item 8, “Financial Statements and Supplementary Data” beginning on page F-1.

Critical Accounting Estimates

Reserves for Losses and Loss Adjustment Expenses. We establish reserves for the estimated total unpaid costs of losses including loss adjustment expenses (“LAE”), for losses that occurred in 2013 and prior. Unless otherwise specified below, the term “loss reserves” encompasses reserves for both losses and LAE. Loss reserves reflect management’s best estimate of the total cost of (i) claims that have been incurred, but not yet paid and (ii) claims that have been “incurred but not yet reported” (“IBNR”). Loss reserves established are not an exact calculation of our liability. Rather, loss reserves represent management’s best estimate of its liability based on application of actuarial techniques and other projection methodologies and taking into consideration other facts and circumstances known at the balance sheet date. The process of establishing loss reserves is complex and necessarily imprecise, as it involves using judgment that is impacted by many variables such as past loss experience, current claim trends and the prevailing social, economic and legal environments. The impact of both internal and

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external variables on ultimate loss and LAE costs is difficult to estimate. We underwrite several different product lines across many different geographic regions with exposure impacted by both the risk characteristics of the physical locations such as wind perils, as well as risks associated with varying social, judicial and legislative characteristics of the jurisdictions in which we do business. In determining loss reserves, we give careful consideration to all available data and actuarial analyses and this process involves significant judgment.

The relevant factors and methodologies used to estimate loss reserves vary significantly by product line due to differences in loss exposure and claim complexity. Much of our business is underwritten on an occurrence basis, meaning that there may be a significant time lag between the event that gives rise to a claim and the date on which the claim is reported to us, which can also result in additional time being required to resolve the claim. During these time lags, which can span over several years for complex claims, new facts and information specific to the claim become known to us, and general econometric and societal trends including inflation continue to change, requiring us to refine our loss reserve estimates on a regular basis. We apply a strict regimen to assure that review of these facts and trends occurs on a timely basis so that this information can be factored into our estimate of future liabilities. However, due to the number and potential magnitude of these variables, actual paid losses in future periods may differ materially from our estimates as reflected in current reserves. These differences can be favorable or unfavorable. More precise estimation of loss reserves is also hindered by the effects of growth in a line of business and uncertainty as to how new business performs over time. In addition to reserving for known claim events, we also establish loss reserves for IBNR. Loss reserves for IBNR are set using our actuarial estimates for events that have occurred as of the balance sheet date but have yet to be reported to us. Estimation of IBNR loss reserves is subject to significant uncertainty.

Following is a summary of gross and net loss reserves we recorded by line of business as of December 31, 2013 and 2012:

	2013				2012
(in millions)	Gross		Net		Gross		Net
General liability	$	1,341.0	$	924.8	$	1,319.6	$	919.9
Workers compensation		541.3		337.7		552.2		365.3
Syndicate 1200 liability		392.8		172.9		325.1		122.5
Syndicate 1200 property		264.8		136.9		332.1		140.1
Commercial multi-peril		203.7		171.0		232.0		195.2
Commercial auto liability		172.6		167.0		170.1		165.1
Reinsurance—nonproportional assumed property		124.0		97.9		148.2		122.9
Syndicate 1200 specialty		74.5		35.6		55.2		22.6
All other lines		115.6		63.8		89.0		57.3
Total reserves	$	3,230.3	$	2,107.6	$	3,223.5	$	2,110.9

Loss Reserve Estimation Methods

The process for estimating our loss reserves begins with the collection and analysis of claim data. The data collected for actuarial analyses includes reported claims sorted by the year the loss occurred, paid losses, also sorted by year of loss occurrence, and case reserve estimates. The data sets are sorted into homogeneous groupings, exhibiting similar loss and exposure characteristics. We primarily use internal data in the analysis but also consider industry data in developing factors and estimates. We analyze loss reserves on a quarterly basis.

We utilize a variety of actuarial techniques and methods to determine loss reserves for all lines of business. Each such method has its own set of assumptions and outputs, and each has strengths and weaknesses in different areas. No single estimation method is superior to another method in all situations. Because we underwrite business in multiple product lines in various locations, the methods and assumptions used to project loss reserves will vary by line of business. We utilize what we believe to be the most appropriate set of actuarial methods and assumptions for each product line grouping. While the loss projection methods may vary by product line, the general approach for calculating IBNR remains the same: ultimate losses are forecasted first, and that amount is reduced by the amount of cumulative paid claims and by case reserves.

When we initially establish IBNR reserves at the beginning of an accident year for each line of business, we use the expected loss ratio method. This method is based upon our analyses of historical loss ratios incorporating adjustments for pricing changes, anticipated loss ratio trends, changes in reinsurance structure and any other factors that may impact loss ratio expectations. At the end of each quarter, we review the loss ratio selections and the emerged loss experience to determine if deviating from the loss ratio method is appropriate. In general, we continue to use the loss ratio method until the end of the

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accident year, at which time we begin to assign weight to the paid and incurred BF methods depending on the line of business being evaluated. The BF methods compute IBNR through a blend of the expected loss ratio method and traditional loss development methods. The BF methods estimate IBNR for an accident year as the product of expected losses (earned premium multiplied by an expected loss ratio) plus an expected percentage of unreported losses. The expected percentage of unreported losses is derived from age-to-ultimate loss development factors that result from our analyses of loss development triangles. As accident years mature to the point at which the reported loss experience is more credible, we assign increasing weight to the paid and incurred loss development methods.

For short-tail lines of business such as property, the expected loss ratio method is initially selected and applied to earned premium at the beginning of an accident year. As property losses occur and are reported, and when claims adjusters have sufficient time and information to make specific claims estimates, the BF methods are used to supplement the expected loss ratio method. Property losses are generally reported within a short time from the date of loss, and in most instances, property claims are settled and paid within a relatively short period of time. Therefore, paid and incurred development methods are given greater weight in our analyses at the end of the accident year. In the event there are large claims incurred, we will analyze large loss information separately to ensure that the loss reserving methods appropriately recognize the magnitude of these losses in the evaluation of ultimate losses.

For long-tail lines such as general liability and automobile liability, the starting point for determining ultimate losses is initially the expected loss ratio method. The time lag for reporting claims is greater in liability lines of business than it is in short-tail lines. Facts and information are frequently not complete at the time case reserves are established, and because protracted litigation is sometimes involved potentially creating additional uncertainty in final settlement amounts, case reserves alone are an insufficient measure of the ultimate loss costs. Due to the variability in the timing of receipt and completeness of case reserve data, loss experience is not deemed fully credible for several years. At the end of the accident year, we rely primarily on the BF methods and continue to rely on those methods for several years. We assign greater credibility to the paid and incurred development methods as the data matures.

Workers compensation is also a long-tail line of business. An expected loss ratio method is used for the initial evaluations of an accident year, followed by paid and incurred BF loss development methodologies as well as paid and incurred development methods as the data matures. Loss development for workers compensation spans many years. However, a significant portion of the outstanding reserves correspond to scheduled annuity payments and are not subject to extreme volatility. The portion of reserves that is not scheduled or annuitized is subject to potentially large variations in ultimate loss cost due to the uncertainty of medical cost inflation. Sources of medical cost inflation include increased utilization, new and more expensive medical testing procedures, and increased utilization and cost of prescription drugs.

We have a Run-off Lines segment that includes reserves for asbestos, environmental and other latent exposures. These latent exposures are typically characterized by extended periods of time between the date we first became exposed to a loss, the date on which a claim was reported and the date on which the claim is resolved. For our Run-off Lines segment long-tail loss reserves, there is significant uncertainty involved in estimating reserves for asbestos, environmental and other latent injury claims. We utilize several methods to estimate reserves for these claims including an approach that projects future calendar period claims and severities, a report year method which estimates loss reserves based on the pattern and magnitude of reported claims and ground-up analysis that relies on an evaluation of individual policy terms and conditions. We also consider survival ratio and market share methods which compare our level of loss reserves and loss payments to that of the industry for similar exposures. We apply greatest weight to the method that projects future calendar period claims and severities because we believe it best captures the unique claim reporting and claim severity characteristics of the underlying exposures and loss development potential. We perform a full review of our Run-off Lines asbestos, environmental and other latent exposures loss reserves at least once a year and review loss activity quarterly for significant changes that might impact management’s best estimate.

Each business segment is analyzed individually, with development characteristics for each short-tail and long-tail line of business identified and applied accordingly. In comparing loss reserve methods and assumptions used at December 31, 2013 as compared with methods and assumptions used at December 31, 2012, management has not changed or adjusted methodologies or assumptions in any significant manner.

In conducting our actuarial analyses, we generally assume that past patterns demonstrated in the data will repeat themselves and that the data provides a basis for estimating future loss reserves. In the event that we become aware of a material change that may render past experience inappropriate for the purpose of estimating current loss reserves, we will attempt to quantify the effect of the change and use informed management judgment to adjust loss reserve forecasts appropriately.

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Uncertainties in Loss Reserve Estimation

The major causes of uncertainty will vary for each product line reviewed. For short-tail property lines of business, we are exposed to catastrophe losses, both natural and manmade. Due to the nature of certain catastrophic loss events, such as hurricanes, earthquakes or terrorist attacks, our normal claims resolution processes may be impaired due to factors such as difficulty in accessing impacted areas and other physical, legal and regulatory impediments. These factors can make establishment of accurate loss reserve estimates difficult and render such estimates subject to greater uncertainty. Additionally, if the catastrophe occurs near the end of a financial reporting period, there are additional uncertainties in loss reserve estimates due to the lack of sufficient time to conduct a thorough analysis. Long-tail casualty lines of business also present challenges in establishing appropriate loss reserves, particularly in the event of changes in the legal environment over time which may broaden our liability or scope of policy coverage and increase the magnitude of claim payments. The possibility of future adverse changes in the legal environment heightens the uncertainty inherent in estimating the ultimate claim costs on the basis of past claims costs, further complicating the already complex loss reserving process.

In all lines, final claim payments may differ from the established loss reserve. Due to the uncertainties discussed above, the ultimate losses may vary materially from current loss reserves and could have a material adverse effect on our future financial condition, results of operations and cash flows. Any adjustments to loss reserves are reflected in the results for the year during which the adjustments are made.

In addition to the previously described general uncertainties encountered in estimating loss reserves, there are significant additional uncertainties in estimating the amount of our potential losses from asbestos and environmental claims. Loss reserves for asbestos and environmental claims cannot normally be estimated with traditional loss reserving techniques that rely on historical accident year development factors due to the uncertainties surrounding these types of claims. Among the uncertainties impacting the estimation of such losses are:

• potentially long waiting periods between exposure and emergence of any bodily injury or property damage;

• difficulty in identifying sources of environmental or asbestos contamination;

• difficulty in properly allocating responsibility and/or liability for environmental or asbestos damage;

• changes in underlying laws and judicial interpretation of those laws;

• potential for an environmental or asbestos claim to involve many insurance providers over many policy periods;

• long reporting delays from insureds to insurance companies;

• historical data concerning asbestos and environmental losses, which is more limited than historical information on other types of claims;

• questions concerning interpretation and application of insurance coverage; and

• uncertainty regarding the number and identity of insureds with potential asbestos or environmental exposure.

Case reserves and expense reserves for costs of related litigation have been established where sufficient information has been developed. Additionally, IBNR has been established to cover additional exposure on known and unknown claims.

We underwrite environmental and pollution coverages on a limited number of policies and underground storage tanks. We establish loss reserves to the extent that, in the judgment of management, the facts and prevailing law reflect an exposure for us.

Risk Factors by Line of Business in Loss Reserve Estimation

The following section details reserving considerations and loss and LAE risk factors for the lines representing most of our loss reserves. Each risk factor presented will have a different impact on required loss reserves. Also, risk factors can have offsetting or compounding effects on required loss reserves. For example, introduction and approval of a more expensive medical procedure may result in higher estimates for medical inflation costs. But in the workers compensation context, the availability of that same medical procedure may enable workers to return to work more quickly, thereby lowering estimates for indemnity costs for that line of business. As a result, it usually is not possible to identify and measure the impact that a change in one discrete risk factor may have or construct a meaningful sensitivity expectation around it. We do not make explicit estimates of the impact on loss reserve estimates for the assumptions related to the risk factors described below.

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Loss adjustment expenses used in connection with our loss reserves are comprised of both allocated and unallocated expenses. Allocated loss adjustment expenses generally relate to specific claim files. We often combine allocated loss adjustment expenses with losses for purposes of projecting ultimate liabilities. For some types of claims, such as asbestos, environmental and professional liability, allocated loss adjustment expenses consisting primarily of legal defense costs may be significant, sometimes exceeding the liability to indemnify claimants for losses. Unallocated loss adjustment expenses generally relate to the administration and handling of claims in the ordinary course of business. We typically calculate unallocated loss adjustment expense reserves using a percentage of unpaid losses for each line of business.

GENERAL LIABILITY

General liability is considered a long-tail line, as it takes a relatively long period of time to finalize and resolve all claims from a given accident year. The speed at which claims are received and then resolved is a function of the specific coverage provided, jurisdiction in which the claim is located and specific policy provisions. There are numerous components underlying the general liability product line. Some of these have relatively moderate payout patterns with most of the claims for a given accident year closed within five to seven years, while others are characterized by extreme time lags for both reporting and payment of claims. In addition, this line includes asbestos and environmental claims, which are reviewed separately because of the unique character of these exposures. Allocated loss adjustment expenses in this line consist primarily of legal costs and may exceed the total amount of the indemnity loss on some claims.

Major factors contributing to uncertainty in loss reserve estimates for general liability include reporting lags (i.e., the length of time between the event triggering coverage and the actual reporting of the claim), the number of parties involved in the underlying tort action, events triggering coverage that are spread over multiple time periods, the inability to know in advance what actual indemnity costs associated with an individual claim will be, the potential for disputes over whether claims were reasonably foreseeable and intended to be covered at the time the contracts were underwritten and the potential for mass tort claims and class actions. Generally, claims with a longer reporting lag time are characterized by greater inherent risk of uncertainty.

Examples of loss and LAE risk factors associated with general liability claims that can change over time and result in adjustments to loss reserves include, but are not limited to, the following:

Claims risk factors:

• Changes in claim handling procedures

• Changes in policy provisions or court interpretation of such provisions

• New theories of liability

• Trends in jury awards

• Changes in the propensity to sue, in general and with specificity to particular issues

• Changes in statutes of limitations

• Changes in the underlying court system

• Distortions from losses resulting from large single accounts or single issues

• Changes in tort law

• Shifts in law suit mix between U.S. federal and state courts

• Changes in claim office structure (causing distortions in the data)

• Changes in settlement patterns

• Changes in inflation

Book of Business risk factors:

• Changes in policy provisions (e.g., deductibles, policy limits, endorsements)

• Changes in underwriting standards

• Product mix (e.g., size of account, industries insured, jurisdiction mix)

• Growth due to acquisitions

• Development characteristics of general liability lines

Many of our general liability claims require extended time periods to resolve due to delays in reporting, complex coverage issues and difficulties in assessing claim values and ultimate loss payouts. Some lines require specialized claim handling, such as industrial casualty, general casualty and professional liability exposures and require additional time to resolve. Actuarial methods used to forecast ultimate liabilities in these lines are adjusted to take into consideration the uncertainties related to handling claims expected to remain open for an extended period of time as well as the Claims and Book of Business risk factors noted above.

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For asbestos and environmental claims, we supplement our traditional loss forecasting methods with additional approaches that attempt to capture the risk characteristics of these insureds and the claimants involved.

WORKERS COMPENSATION

Workers compensation is generally considered a long-tail coverage, as it takes a relatively long period of time to finalize claims from a given accident year. Certain payments, such as initial medical treatment or temporary wage replacement for the injured worker, are generally disbursed quickly. Other payments are made over the course of several years, such as awards for permanent partial injuries. Some payments continue to take place throughout the injured worker’s life, such as permanent disability benefits and on-going medical care. Although long-tail in nature, claims generally are not subject to long reporting lags, settlements are generally not complex and most of the liability exposure is characterized by high frequency and moderate severity. The largest reserve risks are generally associated with low frequency, high severity claims that require lifetime coverage for medical expense arising from a worker’s injury.

Examples of loss and LAE risk factors that can change over time and cause workers compensation loss reserves to fluctuate include, but are not limited to, the following:

Indemnity claims risk factors:

• Time required to recover from the injury

• Degree of available transitional jobs

• Degree of legal involvement

• Changes in the interpretations and processes of the workers compensation commissions’ oversight of claims

• Future wage inflation for U.S. states that index benefits

• Changes in the administrative policies of second injury funds

• Changes in benefit levels

Medical claims risk factors:

• Changes in the cost of medical treatments (including prescription drugs) and underlying fee schedules

• Frequency of visits to health providers

• Number of medical procedures given during visits to health providers

• Types of health providers used

• Type of medical treatments received

• Use of preferred provider networks and other medical cost containment practices

• Availability of new medical processes and equipment

• Changes in the use of pharmaceutical drugs

• Degree of patient responsiveness to treatment

Book of Business risk factors;

• Injury type mix

• Changes in underwriting standards

• Changing product mix based on insured demand

• Management of exited products risk

• Development characteristics of workers compensation lines

In addition to the indications of the actuarial methods, we consider additional analytic measures based upon the Claims and Book of Business workers compensation risk factors noted above in deriving our loss reserve estimate.

SYNDICATE 1200 LIABILITY AND PROPERTY

Syndicate 1200 loss reserves are analyzed quarterly by internal staff. Additionally, we employ an independent actuary to conduct a detailed review of loss reserves annually. Management’s estimate of reserves is based on the internal study. The external study is completed to support the actuarial opinion for Lloyd’s reporting.

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We use several approaches and actuarial techniques to project gross and net loss reserves. For property lines of business, we review our loss reserves considering the underlying claims. We utilize paid and incurred loss development as our primary methods for determining ultimate losses. Additionally, we consider expected loss ratios, pricing trends and any other variations in the business underwritten, including changes in underlying terms and conditions. Catastrophic claim liabilities and other large losses are inherently more volatile than attritional losses; therefore, we need to utilize other loss forecasting methodologies. For known catastrophic claims, we initially rely on industry estimates and information from third party modeling software to determine our exposure. As catastrophic events mature, specific claim information we receive is used to refine our initial loss estimate. After approximately four to six months from the date of the catastrophic event, our reported losses relative to the event are assigned significant credibility. However, it may be several years before ultimate loss amounts are fully known as disputes over policy coverage or the relevant law governing a claim cause uncertainty in the estimation of outcomes. The observed large loss patterns are subsequently adjusted by changes in underlying exposures and risk characteristics.

For the long-tail lines underwritten by Syndicate 1200, such as professional indemnity and general liability, it may be several years before claims are fully advised and settled. The large time lag involved for reporting and settling claims introduces a large amount of uncertainty into the loss estimation process. Loss experience is not deemed fully credible for several years. Until the time that an underwriting year of account is closed, we utilize an expected loss ratio method to determine ultimate losses, supplemented by paid and incurred BF loss development methods, to the extent that the reported loss data matures and is considered credible.

We perform our loss reserve analysis on a syndicate basis, which represents 100% of the business underwritten by the syndicate. We utilize trade reinsurance to cede a proportion of its premium income and incurred losses to trade reinsurers. The percentage of the cession differs for each underwriting year of account. The reinsurers’ share of provisions for claims is based on calculated amounts of outstanding claims and projections for IBNR, net of estimated unrecoverable amounts. The syndicate will evaluate the reinsurance program in place for the class of business, the claims experience for the year and the security rating of the reinsurance companies involved. This evaluation, along with other factors and considerations, is used to determine trade reinsurer participation in future years.

COMMERCIAL MULTIPLE PERIL

Commercial multiple peril lines insure a combination of property and liability exposures, and therefore, include both short and long-tail coverages. Property coverage claims are generally resolved in a short period of time, while liability coverage claims generally require more time to resolve. The risk of fluctuation in loss reserves for this line is predominately associated with liability coverage, with risk factors similar to other general liability lines described above.

Because commercial multiple peril lines involve both short-tail and long-tail coverages, we give weight to different methodologies in deriving estimated loss reserves based on the coverage being evaluated. In general, paid and incurred loss development methods are used to forecast property losses. For liability losses, due to the Claims and Book of Business risk factors described in the General Liability section above, we use several loss reserving methods to capture the development characteristics associated with these lines of business. Paid and incurred loss development, paid and incurred BF methods and a loss frequency/severity method are used in deriving estimated loss reserves. In addition to these approaches, which are used across most commercial multiple peril categories of business, we also consider additional analytic measures in deriving loss reserve estimates for certain product lines with differing characteristics.

COMMERCIAL AUTOMOBILE LIABILITY

The commercial automobile liability product line is a long-tail coverage, mainly due to exposures arising out of bodily injury claims. Losses in this line associated with bodily injury claims generally are more difficult to accurately estimate and take longer to resolve. Claim reporting lags also can be lengthy. Examples of loss and LAE risk factors that can change over time and result in adjustments to commercial automobile liability loss reserves include, but are not limited to, the following:

Claims risk factors:

• Trends in jury awards

• Changes in the underlying court system

• Changes in case law

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• Litigation trends

• Frequency of claims with payment capped by policy limits

• Change in average severity of accidents or proportion of severe accidents

• Subrogation opportunities

• Changes in claim handling procedures

• Frequency of visits to health providers

• Number of medical procedures given during visits to health providers

• Types of health providers used

• Types of medical treatments received

• Changes in cost of medical treatments

• Degree of patient responsiveness to treatment

Book of Business risk factors:

• Changes in policy provisions (e.g., deductibles, policy limits, endorsements, etc.)

• Changes in mix of insured vehicles

• Changes in underwriting standards

In addition to the indications of the actuarial methods, we consider additional analytic measures based upon the Claims and Book of Business risk factors noted above in deriving our loss reserve estimate.

REINSURANCE – NONPROPORTIONAL ASSUMED PROPERTY

As a property catastrophe reinsurer, incurred losses are inherently more volatile than those of primary insurers and reinsurers of risks that have an established historical pattern of losses. The most significant uncertainty in reserves involves estimates of catastrophe losses. In reserving for catastrophe losses, estimates are influenced by underwriting information provided by clients, clients’ market shares, industry catastrophe models, industry loss estimates and internal analyses of this information. This reserving approach can cause significant development from initial loss estimates in the immediate wake of a catastrophe event due to the limited information available to us as a reinsurer regarding the actual underlying losses. This process can cause the ultimate estimates to differ significantly from initial projections.

The loss estimation process often begins with the identification of events with characteristics similar to the recent catastrophe (geographic location, wind speed, damageability, etc.), which then results in a list of the expected losses by contract from our proprietary risk management system. Third party modeling software is embedded in our proprietary risk management system.

Concurrently, underwriting teams employ a market share approach as well as perform a thorough contract by contract analysis to identify potential changes to the expected loss estimates including IBNR by contract. The results of this initial process are updated when additional information is available. This information comes in the form of publicly available announcements, informal contact with brokers and/or clients, submission data and formal claim notices. As catastrophic events mature and reporting loss methods become more credible (usually six to twelve months after the event) actuarial methods implementing historical patterns can be assigned more credibility. In evaluating the loss estimates for catastrophic events, we use internal databases to establish projected reporting patterns and payment patterns. Industry patterns from the Reinsurance Association of America (“RAA”), an insurance industry organization, are also employed.

Impact of changes in key assumptions on reserve volatility

We estimate reserves using a variety of methods, assumptions and data elements. The reserve estimation process includes explicit assumptions about a number of factors in the internal and external environment. Across most lines of business, the most important assumptions are future loss development factors applied to paid or reported losses to date. The trend in loss costs is also a key assumption, particularly in the most recent accident years, where loss development factors are less credible.

The following discussion includes disclosure of possible variations from current estimates of loss reserves due to a change in certain key assumptions. Each of the impacts described below is estimated individually, without consideration for any correlation among other key assumptions or among lines of business. Therefore, it would be inappropriate to take each of the amounts described below and add them together in an attempt to estimate volatility for our reserves in total. The estimated variations in reserves due to changes in key assumptions discussed below are a reasonable estimate of possible variations that may occur in the future, likely over a period of several calendar years. It is important to note that the variations discussed herein are not meant to be a worst or best case scenario, and therefore, it is possible that future variations may be more than amounts discussed below.

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Recorded gross reserves for general liability were $1,341.0 million, with approximately 4% of that amount related to run-off asbestos and environmental exposures as of December 31, 2013. For general liability losses relating to ongoing operations, reported loss development patterns are a key assumption for this line of business. Historically, assumptions on reported loss development patterns have been impacted by, among other things, emergence of new types of claims (e.g., construction defect claims) or a shift in the mixture between smaller, more routine claims and larger, more complex claims. We have reviewed the historical variation in reported loss development patterns for general liability losses deriving from continuing operations. If the reported loss development patterns change by 10%, a change that we have experienced in the past and that management considers possible, the estimated net reserve could change by $65.0 million, in either direction.

Similar to general liability, commercial multiple peril reserves are affected by reported loss development pattern assumptions. Recorded gross reserves for commercial multiple peril business were $203.7 million as of December 31, 2013. If the development patterns underlying our net reserves for this line of business change by 10%, the estimated net reserve could change by $10.0 million, in either direction.

Recorded gross reserves for workers compensation were $541.3 million as of December 31, 2013. The two most important assumptions for workers compensation reserves are loss development factors and loss cost trends, particularly medical cost inflation. Loss development patterns are dependent on medical cost inflation. Approximately 60% of the workers compensation net reserves are related to future medical costs. A review of National Council on Compensation Insurance data suggests that the annual growth in industry medical claim costs has varied from -2% to +13% since 1991. Across the entire reserve base, a 1% change in calendar year medical inflation could change the estimated net reserve by $20.0 million, in either direction.

Recorded gross reserves for commercial auto liability were $172.6 million as of December 31, 2013. A key assumption for commercial lines auto liability is the annual loss cost trend, particularly the severity trend component of loss costs. A 3% change in assumed annual severity is within the range of our historical experience, and that management considers possible. A 3% change in assumed annual severity could change the estimated net reserve by $25.0 million, in either direction.

Recorded gross reserves for Syndicate 1200 were $777.0 million as of December 31, 2013. Estimation of International liability reserves are subject to late emergence and mix shifts between smaller, more routine claims and larger, more complex claims. International property reserves are analyzed by the characteristics of the underlying exposures. Property loss reserves are characterized by relatively short periods between occurrence, reporting, determination of coverage and ultimate claims settlement. These property loss reserves tend to be the most predictable. Catastrophic loss reserves tend to exhibit more volatility due to the nature of the underlying loss event which may cause delays and complexity in estimating ultimate loss exposure.

With respect to asbestos and environmental general liability losses, we wrote several different categories of insurance contracts that may cover asbestos and environmental claims. First, we wrote primary policies providing the first layer of coverage in an insured’s general liability insurance program. Second, we wrote excess policies providing higher layers of general liability insurance coverage for losses that exhaust the limits of underlying coverage. Third, we acted as a reinsurer assuming a portion of those risks from other insurers writing primary, excess and reinsurance coverages. Fourth, we participated in the London Market, writing both direct insurance and assumed reinsurance business. With regard to both environmental and asbestos claims, significant uncertainty limits the ability of insurers and reinsurers to estimate the ultimate reserves necessary for unpaid losses and related expenses. Traditional actuarial reserving techniques cannot reasonably estimate the ultimate cost of these claims, particularly during periods where theories of law are in a state of continued uncertainty. The degree of variability of reserve estimates for these types of exposures is significantly greater than for other more traditional general liability exposures. In particular, we believe there is a high degree of uncertainty inherent in the estimation of asbestos and environmental loss reserves.

In the case of the reserves for asbestos exposures, factors contributing to the high degree of uncertainty include inadequate loss development patterns, plaintiffs’ expanding theories of liability, the risks inherent in major litigation and inconsistent emerging legal outcomes. Furthermore, over time, insurers, including Argo Group, have experienced significant changes in the rate at which asbestos claims are brought, claims experience of particular insureds and value of claims, making predictions of future

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exposure from past experience uncertain. For example, in the past, insurers in general, including Argo Group, have experienced an increase in the number of asbestos-related claims due to, among other things, plaintiffs’ increased focus on new and previously peripheral defendants and an increase in the number of insureds seeking bankruptcy protection as a result of asbestos-related liabilities. Plaintiffs and insureds have sought to use bankruptcy proceedings, including “pre-packaged” bankruptcies, to accelerate the funding and amount of loss payments by insurers. In addition, some policyholders continue to assert new classes of claims for coverages to which an aggregate limit of liability may not apply. Further uncertainties include insolvencies of other insurers and reinsurers, delays in the reporting of new claims by insurers and reinsurers and unanticipated issues influencing our ability to recover reinsurance for asbestos and environmental claims. Management believes these issues are not likely to be resolved in the near future.

In the case of the reserves for environmental exposures, factors contributing to the high degree of uncertainty include expanding theories of liability and damages, the risks inherent in major litigation, inconsistent decisions concerning the existence and scope of coverage for environmental claims, and uncertainty as to the monetary amount being sought by the claimant from the insured.

The reporting pattern for assumed reinsurance claims, including those related to asbestos and environmental claims is much longer than for direct claims. In many instances, it takes months or years to determine that the policyholder’s own obligations have been met and how the reinsurance in question may apply to such claims. The delay in reporting reinsurance claims and exposures adds to the uncertainty of estimating the related reserves.

A number of factors affect the variability of estimates for asbestos and environmental reserves including assumptions with respect to the frequency of claims, average severity of those claims settled with payment, dismissal rate of claims with no payment and expense to indemnity ratio. The uncertainty with respect to the underlying reserve assumptions for asbestos and environmental adds a greater degree of variability to these reserve estimates than reserve estimates for more traditional exposures. While this variability is reflected in part in the size of the range of reserves we have developed, that range may still not be indicative of the potential variance between the ultimate outcome and the recorded reserves. The process of estimating asbestos and environmental reserves, which is detailed in Note 17, “Run-off Lines,” of Notes to Consolidated Financial Statements, remains subject to a wide variety of uncertainties. Due to these uncertainties, further developments could cause us to change our estimates and ranges of our asbestos and environmental reserves, and the effect of these changes could be material to our consolidated operating results, financial condition and liquidity.

Loss Reserve Estimation Variability

After reviewing the output from various loss reserving methodologies, management selects its best estimate of reserves. Management believes that the aggregate loss reserves at December 31, 2013 were adequate to cover claims for losses that have occurred, including both known claims and claims yet to be reported. As of December 31, 2013, we recorded gross loss reserves of $3,230.3 million and loss reserves net of reinsurance of $2,107.6 million. Although our financial reports reflect management’s best estimate of reserves, it is unlikely that the final amount paid will exactly equal management’s best estimate. In order to provide an indication of the variability in loss reserve estimates, we develop reserve ranges by evaluating the variability implied by the results of the various methods and the impact of changing the assumptions and factors used in the loss reserving process.

We estimate our range of reserves, net of reinsurance, at approximately $1,915 million to $2,380 million as of December 31, 2013. In determining this range, we evaluated the variability of the loss reserves for each of our major operating segments, comprising both ongoing operations and runoff businesses. Our estimated range does not make a specific provision for sources of unknown or unanticipated correlated events such as potential sources of liability not anticipated at the time coverage was afforded, such as asbestos. These events in combination with other events which may not be contemplated by management in developing our range may cause reserves to develop either more or less favorably than indicated by assumptions that management considers reasonable. This means that the range of reserve values does not represent the range of all possible favorable or unfavorable reserve outcomes, and actual ultimate paid losses may fall outside this range. No one risk factor has been isolated for the purpose of performing a sensitivity or variability analysis on that particular risk factor.

In establishing our best estimate for reserves, management considers facts currently known and the present judicial and legislative environment. However, given the expansion of coverage and liability by the courts, legislatures in the recent past and possibility of similar interpretations in the future, particularly with regard to asbestos and environmental claims, additional loss reserves may develop in future periods. These potential increases cannot be reasonably estimated at the present time. Any increases could have an adverse impact on future operating results, liquidity, risk-based capital ratios and ratings assigned to our insurance subsidiaries by the nationally recognized insurance rating agencies.

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Valuation of Investments. Our investments in fixed maturities and stocks are classified as available-for-sale and reported at fair value under GAAP. Changes in the fair value of investments classified as available-for-sale are not recognized in income during the period, but rather are recognized as a separate component of shareholders’ equity until realized. Fair values of these investments are estimated using prices obtained from third party pricing services, where available. For securities where we are unable to obtain fair values from a pricing service or broker, fair values are estimated using information obtained from investment advisors. Management performed several processes to ascertain the reasonableness of investment values included in the consolidated financial statements at December 31, 2013, including i) obtaining and reviewing internal control reports for our accounting service providers that obtain fair values from third party pricing services, ii) discussing with our investment managers their process for reviewing and validating pricing obtained from outside services and obtained values for all securities from our investment managers and iii) comparing the security pricing received from the investment managers with the prices used in the consolidated financial statements and obtained additional information for variances that exceeded a certain threshold. As of December 31, 2013, investments classified as available-for-sale for which we did not receive a fair value from a pricing service or broker accounted for less than 1% of our investment portfolio. The actual value at which such securities could be sold or settled with a willing buyer or seller may differ from such estimated fair values depending on a number of factors including, but not limited to, current and future economic conditions, the quantity sold or settled, the presence of an active market and the availability of a willing buyer or seller.

We regularly monitor the difference between the estimated fair values of our investments and their cost or book values to identify underperforming investments and whether declines in value are temporary in nature or “other-than-temporary.” If a decline in the value of a particular investment is believed to be temporary, the decline is recorded as an unrealized loss, net of tax, in other comprehensive income as a separate component of shareholders’ equity. If the decline is believed to be “other-than-temporary,” the carrying value of the investment is written down and recorded as a realized loss in our Consolidated Statements of Income (Loss). We evaluate our investments for impairment. For fixed maturities securities, the evaluation for a credit loss is generally based on the present value of expected cash flows of the security as compared to the amortized book value. For mortgage-backed securities, frequency and severity inputs are used in projecting future cash flows of the securities. Loss frequency is measured as the credit default rate, which includes such factors as loan-to-value ratios and credit scores of borrowers. Loss severity includes such factors as trends in overall housing prices and house prices that are obtained at foreclosure. For equity securities, the length of time and the amount of decline in fair value are the principal factors in determining other-than-temporary impairment. For the years ended December 31, 2013 and 2012, we recorded $7.8 million and $3.7 million, respectively, of realized losses due to the recognition of other-than-temporary impairments.

Deferred Tax Assets and Liabilities. Deferred tax assets and liabilities are determined based on the differences between the financial reporting and tax bases of Argo Group’s United States, Brazil, Ireland, Switzerland, Belgium, Malta and United Kingdom subsidiaries’ assets and liabilities. Deferred tax liabilities are recognized for temporary differences that will result in taxable amounts in future years. Deferred tax assets are recognized for deductible temporary differences and tax operating loss and tax credit carryforwards. The deferred tax assets and liabilities are measured by applying the enacted tax rates and laws in effect for the years in which such differences are expected to reverse. The components of our deferred tax asset are temporary differences primarily attributable to loss reserve discounting and unearned premium reserves. Our deferred tax liabilities resulted primarily from unrealized gains in the investment portfolio, deferred acquisition costs and from underwriting profits arising from business conducted at Lloyd’s which do not become subject to corporation tax in the United Kingdom until the year in which such profits are distributed.

Realization of deferred tax assets is dependent upon our generation of sufficient taxable income in the future to recover tax benefits that cannot be recovered from taxes paid in the carryback period, which is generally two years for net operating losses and three years for capital losses. At December 31, 2013, we had a total net deferred tax asset of $27.5 million prior to any valuation allowance. Management has concluded that a valuation allowance is required for a portion of the tax effected net capital loss carryforward of $29.8 million generated from the sale of PXRE Reinsurance Company, and a full valuation allowance is required for the tax effected net operating loss carryforward of $18.8 million from PXRE Corporation and for the tax effected net operating loss carryforward of $1.0 million from ARIS Title Insurance Corporation (“ARIS”). The capital loss carryforward generated from the sale of PXRE Reinsurance Company expired December 31, 2013. Of the PXRE loss carryforwards, $17.2 million will expire if not used by December 31, 2025 and $1.5 million will expire if not used by December 31, 2027. Of the ARIS loss carryforward, $0.2 million will expire if not used by December 31, 2027, $0.4 million will expire if not used by December 31, 2028 and $0.4 million will expire if not used by December 31, 2029. The valuation

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allowances have been established as Internal Revenue Code Section 382 limits the utilization of net operating loss and net capital loss carryforwards following an ownership change. Accordingly, a valuation allowance of $56.2 million is required as of December 31, 2013. The loss carryforwards available to use per year are $2.8 million as required by Internal Revenue Code Section 382. During the year ended December 31, 2013, the valuation allowance was reduced by $1.0 million pertaining to the use of the PXRE and ARIS loss carryforwards, was increased by $0.6 million pertaining to the Malta operations and was increased by $4.1 million pertaining to the Brazil operations. The net deferred tax liability after the valuation allowance is $28.7 million at December 31, 2013. Management regularly evaluates the recoverability of the deferred tax assets and makes any necessary adjustments to them based upon any changes in management’s expectations of future taxable income.

Indefinite-Lived Intangible Assets, including Goodwill. We perform annual impairment tests of our indefinite-lived intangible assets, including goodwill, or more frequently when impairment indicators exist. We have elected to perform our goodwill impairment test on the first day of the fourth quarter of each year. The goodwill impairment test is determined using a two-step process. The first step is to identify if a potential impairment exists by comparing the fair value of a reporting unit with its carrying amount, including goodwill (‘Step 1”). If the fair value of a reporting unit exceeds its carrying value amount, goodwill of the reporting unit is not considered to have a potential impairment and the second step is not necessary. However, if the carrying amount of the reporting unit exceeds its fair value, the second step (“Step 2”) is performed to determine if goodwill is impaired and to measure the amount of impairment loss to recognize, if any. Step 2 compares the implied fair value of goodwill with the carrying amount of goodwill. If the implied value of goodwill is less than the carrying amount of goodwill, then a charge is recorded to reduce goodwill to the implied goodwill. The implied goodwill is calculated based on a hypothetical purchase price allocation, similar to the requirements in the accounting guidance for business combinations, whereby the implied fair value of the reporting unit is allocated to the fair value of the assets and liabilities of the reporting unit.

At December 31, 2013, we had goodwill of $153.8 million assigned to the following reporting units: Excess and Surplus lines—$76.4 million, Commercial Specialty—$48.7 million and Syndicate 1200—$28.7 million. Additionally, at December 31, 2013, we had intangible assets totaling $86.0 million, including indefinite-lived intangible assets of $60.5 million and $1.8 million within the Syndicate 1200 and Commercial Specialty reporting units, respectively. Due to the nature of the Syndicate 1200 business, for purposes of the annual impairment evaluation, management has aggregated the fair values between the indefinite-lived intangible asset and goodwill.

For purposes of evaluating goodwill for impairment, management determined that our reporting units are the same as our business segments because all components of each segment are similar and none of the components were determined to be separate reporting units. Additionally, each business segment has discrete financial information available that is regularly reviewed by the chief operating decision maker to make decisions about resources to be allocated and to assess performance. We allocated the assets, including goodwill, and liabilities of our reporting units consistent with our business segment reporting and prior periods. No material changes in the accounting methodology used to evaluate goodwill were made during 2013.

The fair value of reporting units was estimated using an average of three valuation methods: a comparable company analysis, precedent transaction analysis and discounted cash flow analysis. All three methods require management to make various judgments and assumptions including but not limited to: (i) market dynamics affecting each segment such as the competitive environment, pricing cycle and pricing outlook; the economy and interest rates, (ii) projections of earned premiums, losses, expenses and cash flows, and (iii) discount rates and valuation multiples. Assumptions about future cash flows are based on our budgets, business plans, economic projections, anticipated future cash flows and market data. Finally, the comparable company analysis and precedent transaction analysis required judgment in selecting comparable companies and comparable transactions for use in the calculations. These judgments and assumptions, and the outcomes in which they result, are potentially subject to material change based on factors, dynamics and influences outside of the control of management. In all instances, future changes in these judgments and assumptions could cause impairment of goodwill.

On October 1, 2013, the resulting fair values of the reporting units were in excess of the carrying value, including goodwill, of the reporting units. Accordingly, management did not perform Step 2. However, a 38% decline in the fair value of the Excess and Surplus Lines reporting unit, 21% decline in the fair value of the Commercial Specialty reporting unit or 16% decline in the fair value of the Syndicate 1200 reporting unit would have resulted in the carrying values of these reporting units being in excess of their respective fair values, resulting in the need to perform Step 2, which could have resulted in a material impairment to our goodwill. Any decline in the fair value of these reporting units could result in the carrying value of the reporting unit being in excess of fair value, triggering Step 2 of the impairment testing model. Step 2 could result in an impairment of goodwill.

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As noted above, we have elected to make the first day of the fourth quarter the annual impairment assessment date for goodwill and indefinite-lived intangible assets. An impairment analysis subsequent to this date has not been performed as management believes that no additional indicators of impairment have arisen, such as significant additional pricing competition, unexpected significant declines in operating results, divestiture of a significant component of the business or further significant decline in market capitalization.

Our market capitalization has increased in 2013; however, our stock has continued to trade below book value. Management considered the market capitalization below book value as a data point in performing its annual impairment test. Management considers the decline in our market capitalization to be primarily attributable to global financial market conditions, including the credit crisis, as well as current trends within the insurance industry. The valuation analysis discussed above supports management’s view that goodwill and indefinite-lived intangible assets are not impaired at October 1, 2013. Through December 31, 2013, there have been no indicators of impairment of goodwill and indefinite-lived intangible assets. During 2014, we will monitor relevant internal and external factors and their potential impact on the fair value of our reporting segments, and if required, we will update our impairment analysis.

While management believes the estimates and assumptions are reasonable in determining the fair value of reporting units, it is possible a material change could occur. If our actual results are not consistent with our estimates and assumptions used to calculate fair value, we may be required to perform Step 2 in future periods and impairment of goodwill and/or indefinite-lived assets could result. We cannot predict future events that might impact the fair value of reporting units and goodwill impairment. Such events include, but are not limited to, increased competition in insurance markets and global economic changes.

We evaluated our definite lived intangibles for indicators of impairment. If indicators of impairment had been identified, we would have been required to test definite lived intangible assets for impairment. As of October 1, 2013, the testing date, no indicators of impairment were identified. Therefore, we were not required to test for impairment. As with the indefinite-lived intangible assets, we will continue to monitor for indicators of impairment and test as required.

Item 7A. Quantitative and Qualitative Disclosures about Market Risk

We believe that we are principally exposed to three types of market risk: interest rate risk, credit risk and foreign currency risk.

Interest Rate Risk

Our fixed investment portfolio is exposed to interest rate risk. Fluctuations in interest rates have a direct impact on the fair valuation of these securities. As interest rates rise, the fair value of our fixed maturity portfolio generally falls, and the converse is generally also true. We manage interest rate risk through an asset liability strategy that involves the selection of investments with appropriate characteristics, such as duration, yield, currency and liquidity that are tailored to the anticipated cash outflow characteristics of our liabilities. A significant portion of the investment portfolio matures each quarter, allowing for reinvestment at current market rates. Based upon a pricing model, we determine the estimated change in fair value of the fixed maturity securities, assuming immediate parallel shifts in the treasury yield curve while keeping spreads between individual securities and treasuries static. The following interest rate sensitivity analysis measures the potential change in fair value for fixed maturity and short-term investments resulting from changes in market rates ranging from -200 basis points to +300 basis points as of December 31, 2013:

Fixed Income and Short-Term Investments

Portfolio Characteristics

	-200			-100			Base Case			+100			+200			+300
Market Yield		0.9	%		1.1	%		1.6	%		2.3	%		3.1	%		3.8	%
Average Life (years)		3.5			3.5			3.5			3.7			3.7			3.6
Option Adjusted Duration (years)		2.8			2.8			2.8			2.8			2.8			2.7
Fair Value (in millions)	$	3,298.0		$	3,242.0		$	3,166.0		$	3,081.0		$	2,999.0		$	2,919.0
Gain (Loss) (in millions)	$	131.9		$	76.0		$	0.0		$	(84.8	)	$	(167.2	)	$	(247.1	)

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Credit Risk

We have exposure to credit risk primarily as a holder of fixed maturity investments, short-term investments and other investments. Our risk management strategy and investment policy is to primarily invest in debt instruments of high credit quality issuers and to limit the amount of credit exposure with respect to particular ratings categories and any one issuer.

As shown on the accompanying table, our fixed maturities portfolio is diversified among different types of investments. The securities are rated by one or more National Recognized Statistical Rating Organizations, (i.e., Standard & Poor’s, Moody’s Investors Service, Inc. and Fitch Ratings Ltd). If a security has two ratings, the lower rating is used and if a security has three ratings, the middle rating is used in the preparation of this table. At December 31, 2013, our fixed maturities portfolio had a weighted average rating of AA-, with 78.3% ($2.2 billion fair value) rated A or better, and 36.6% ($1.0 billion fair value) rated AAA. Our portfolio included 6.4% ($180.4 million fair value) of less than investment grade (BB+ or lower) fixed maturities at December 31, 2013.

(in millions)	Fair Value AAA		Fair Value AA		Fair Value A		Fair Value Other		Total
USD denominated:
U.S. Governments	$	274.6	$	0.0	$	0.0	$	0.7	$	275.3
Non-U.S. Governments		25.4		3.8		2.0		29.0		60.2
Obligations of states and political subdivisions		140.8		361.6		69.0		6.4		577.8
Credit-Financial		6.8		45.1		260.3		127.7		439.9
Credit-Industrial		6.5		12.0		108.6		270.0		397.1
Credit-Utility		0.0		18.1		24.9		123.6		166.6
Structured securities:
CMO/MBS-agency		226.9		0.0		0.0		0.0		226.9
CMO/MBS-non agency		2.7		9.9		1.6		6.0		20.2
CMBS		105.5		38.8		17.1		3.4		164.8
ABS-residential		0.4		0.0		0.0		6.2		6.6
ABS-non residential		113.9		0.6		0.0		2.7		117.2
Foreign denominated:
Governments		100.0		75.6		6.3		24.8		206.7
Credit		25.7		43.5		75.1		10.8		155.1
Total fixed maturities	$	1,029.2	$	609.0	$	564.9	$	611.3	$	2,814.4

We also hold a diversified investment portfolio of common stocks in various industries and market segments, ranging from small market capitalization stocks to large capitalization companies. Marketable equity securities are carried on our consolidated balance sheets at fair value, and are subject to the risk of potential loss in fair value resulting from adverse changes in prices. At December 31, 2013, the fair value of our equity securities portfolio was $534.3 million.

Foreign Currency Risk

We have exposure to foreign currency risk in both our insurance contracts and invested assets. Some of our insurance contracts provide that ultimate losses may be payable in various foreign currencies. Foreign currency exchange rate risk exists where we do not have cash or securities denominated in the currency for which we will ultimately pay the claims. Thus, we attempt to manage our foreign currency risk by seeking to match our liabilities under insurance and reinsurance polices that are payable in foreign currencies with cash and investments that are denominated in such currencies. In certain instances, we use foreign exchange forward and put option contracts to mitigate this risk. Due to the extended time frame for settling the claims plus the fluctuation in currency exchange rates, the potential exists for us to realize gains and/or losses related to foreign exchange rates. In addition, we may experience foreign currency gains or losses related to exchange rate fluctuations in operating expenses as certain operating costs are payable in currencies other than the U.S. Dollar. For the year ended December 31, 2013, we recorded realized gains of $1.7 million from movements in foreign currency rates on our insurance operations. In addition, we recorded realized losses of $5.5 million from movements on foreign currency rates in our investment portfolio and realized losses of $2.6 million from our currency forward contracts. We had unrealized losses at December 31, 2013 of $1.2 million in movements on foreign currency rates in our investment portfolio, which is recorded in other comprehensive income. These losses are principally related to weakening of non-U.S. Dollar denominated investment exchange rates to the U.S. Dollar.

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We enter into short-term, currency spot and forward contracts designed to mitigate foreign exchange rate exposure for certain non-U.S. Dollar denominated fixed maturity investments. The forward contracts used are typically less than sixty days and may be renewed, as long as the non-U.S. Dollar denominated higher yielding fixed maturities investments are held in the portfolio. Forward contracts are designated as hedges for accounting purposes. The net realized effect on income for 2013 was not material.

Item 8. Financial Statements and Supplementary Data

The report of the independent auditors, consolidated financial statements of Argo Group International Holdings, Ltd. and supplementary financial statements called for by this Item 8 are included in this report beginning on page F-1 and are incorporated herein by reference.

Item 9. Changes in and Disagreements with Accountants on Accounting and Financial Disclosure

None.

Item 9A. Controls and Procedures

Argo Group, under the supervision and with the participation of its management, including the Chief Executive Officer and the Chief Financial Officer, evaluated the effectiveness of the design and operation of our “disclosure controls and procedures” (as defined in Rule 13a-15(e) under the Securities Exchange Act) as of the end of the period covered by this report. In designing and evaluating these disclosure controls and procedures, Argo Group and its management recognize that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving the desired control objectives, and management necessarily was required to apply its judgment in evaluating and implementing possible controls and procedures. Based upon that evaluation, the Chief Executive Officer and Chief Financial Officer concluded that the disclosure controls and procedures were effective at the reasonable assurance level to ensure that information required to be disclosed by Argo Group in the reports filed or submitted under the Exchange Act are recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission’s rules and forms.

There were no changes in the internal control over financial reporting made during the quarter ended December 31, 2013 that materially affected, or are reasonably likely to materially affect, our internal control over financial reporting. We review our disclosure controls and procedures, which may include internal controls over financial reporting, on an ongoing basis. From time to time, management makes changes to enhance the effectiveness of these controls and ensure that they continue to meet the needs of our business activities over time.

Management’s Report on Internal Control Over Financial Reporting

The management of Argo Group is responsible for establishing and maintaining adequate internal control over financial reporting. Our internal control over financial reporting is a process designed under the supervision of the Chief Executive Officer and Chief Financial Officer to provide reasonable assurance regarding the reliability of financial reporting and the preparation of our financial statements for external purposes in accordance with generally accepted accounting principles.

As of December 31, 2013, management assessed the effectiveness of our internal control over financial reporting based on the criteria for effective internal control over financial reporting established in “Internal Control — Integrated Framework,” issued by the Committee of Sponsoring Organizations (“COSO”) of the Treadway Commission (1992 framework). As a result of the assessment, management determined that we maintained effective internal control over financial reporting as of December 31, 2013, based on those criteria.

Ernst & Young LLP, the independent registered public accounting firm that audited our consolidated financial statements included in this Annual Report on Form 10-K, has issued an attestation report on our internal control over financial reporting as of December 31, 2013. The report, which expresses unqualified opinions on the effectiveness of our internal control over financial reporting as of December 31, 2013, is included in this Item under the heading “Attestation Report of Independent Registered Public Accounting Firm.”

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Attestation Report of Independent Registered Public Accounting Firm

Report of Ernst & Young LLP

Report of Independent Registered Public Accounting Firm

The Board of Directors and Shareholders of Argo Group International Holdings, Ltd.:

We have audited Argo Group International Holdings, Ltd.’s (the Company’s) internal control over financial reporting as of December 31, 2013, based on criteria established in Internal Control—Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (1992 framework) (the COSO criteria). The Company’s management is responsible for maintaining effective internal control over financial reporting, and for its assessment of the effectiveness of internal control over financial reporting included in the accompanying Management’s Report on Internal Control over Financial Reporting. Our responsibility is to express an opinion on the Company’s internal control over financial reporting based on our audit.

We conducted our audit in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk, and performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use or disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

In our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2013, based on the COSO criteria.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the consolidated balance sheets of Argo Group International Holdings, Ltd. as of December 31, 2013 and 2012, and the related consolidated statements of income (loss), comprehensive income (loss), shareholders’ equity, and cash flows for each of the three years in the period ended December 31, 2013 of Argo Group International Holdings, Ltd. and our report dated February 28, 2014 expressed an unqualified opinion thereon.

/s/ Ernst & Young LLP

San Antonio, Texas

February 28, 2014

Item 9B. Other Information

None.

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PART III

Item 10. Directors, Executive Officers and Corporate Governance

Incorporated herein by reference is the information appearing under the captions “Election of Directors,” “Named Executive Officers,” “Audit Committee,” “Audit Committee Financial Experts,” “Code of Business Ethics and Conduct” and “Section 16(a) Beneficial Ownership Reporting Compliance” in our Proxy Statement to be filed with the Securities and Exchange Commission relating our Annual Meeting of Shareholders to be held on May 6, 2014.

Item 11. Executive Compensation

Incorporated herein by reference is the information appearing under the captions “Compensation of Executive Officers,” “Non-Employee Director Compensation” and “Human Resources Committee Interlocks and Insider Participation” in our Proxy Statement to be filed with the Securities and Exchange Commission relating to our Annual Meeting of Shareholders to be held on May 6, 2014.

Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Shareholder Matters

Equity Based Compensation Plans

In November 2007, Argo Group shareholders approved the Argo Group International Holdings, Ltd. 2007 Long-Term Incentive Plan (the “LTIP”). The LTIP replaces the Argonaut Group, Inc. Amended and Restated Stock Incentive Plan and the PXRE Group Ltd. Incentive Bonus Compensation Plan, both which were approved by their respective shareholders. Both plans were terminated as of the date of the merger, and all outstanding awards were converted into equivalent shares equity awards of Argo Group. All unissued shares available in the reserve were canceled as of the merger date.

The following table sets forth information as of December 31, 2013 concerning our equity compensation plans:

Plan Category	Number of Securities To Be Issued Upon Exercise of Outstanding Options, Warrants and Rights		Weighted- Average Per Share Exercise Price of Outstanding Options, Warrants and Rights		Number of Securities Remaining Available For Future Issuance Under Equity Compensation Plans (Excluding Securities Reflected in the First Column)
Equity compensation plans approved by shareholders:
Argo Group International Holdings, Ltd.
Long-Term Incentive Plan		1,704,765	$	30.00		1,789,004
Terminated historical plans		44,785	$	49.70		0
Equity compensation plans not approved by shareholders		0	$	0.0		0
Total		1,749,550	$	30.59		1,789,004

Under the terms of the LTIP, only awards that are to be settled in shares are included in the totals above. At December 31, 2013, 1,738,660 cash-settled stock appreciation rights and 18,253 cash-settled restricted stock units are issued and outstanding. Additional information relating to our equity compensation plans is included in Note 15, “Share-based Compensation” in the Notes to Consolidated Financial Statements.

Incorporated herein by reference is the information appearing under the caption “Security Ownership of Principal Stockholders and Management” in our Proxy Statement to be filed with the Securities and Exchange Commission relating to our Annual Meeting of Shareholders to be held on May 6, 2014.

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Item 13. Certain Relationships and Related Transactions and Director Independence

Incorporated herein by reference is the information appearing under the captions “Human Resources Committee Interlocks and Insider Participation,” “Related Persons Transactions” and “Director Independence” in our Proxy Statement to be filed with the Securities and Exchange Commission relating to our Annual Meeting of Shareholders to be held on May 6, 2014.

Item 14. Principal Accounting Fees and Services

Incorporated herein by reference is the information appearing under the caption “Relationship with Independent Auditors” in our Proxy Statement to be filed with the Securities and Exchange Commission relating to our Annual Meeting of Shareholders to be held on May 6, 2014.

PART IV

Item 15. Exhibits, Financial Statement Schedules

(a) 1.     Financial Statements

Selected Financial Data

Report of Independent Registered Public Accounting Firm

Consolidated Balance Sheets—December 31, 2013 and 2012

Consolidated Statements of Income (Loss)

    For the Years Ended December 31, 2013, 2012 and 2011

Consolidated Statements of Comprehensive Income (Loss)

    For the Years Ended December 31, 2013, 2012 and 2011

Consolidated Statements of Shareholders’ Equity

    For the Years Ended December 31, 2013, 2012 and 2011

Consolidated Statements of Cash Flows

    For the Years Ended December 31, 2013, 2012 and 2011

Notes to Consolidated Financial Statements

(a) 2.     Financial Statement Schedules

Schedule II—Condensed Financial Information of Registrant

    December 31, 2013 and 2012

Schedule III—Supplementary Insurance Information

    For the Years Ended December 31, 2013, 2012 and 2011

Schedule V—Valuation and Qualifying Accounts

    For the Years Ended December 31, 2013, 2012 and 2011

Schedule VI—Supplementary Information for Property-Casualty Insurance Companies

    For the Years Ended December 31, 2013, 2012 and 2011

All other schedules and notes specified under Regulation S-X are omitted because they are either not applicable, not required or the information called for therein appears in response to the items of Form 10-K or in the Consolidated Financial Statements and the related Notes to Consolidated Financial Statements of Argo Group International Holdings, Ltd. and its subsidiaries listed on the above index.

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(a) 3.     Exhibits

The following exhibits are numbered in accordance with Item 601 of Regulation S-K and, except as noted, are filed herewith.

Exhibit Number	Description
2.1	Agreement and Plan of Merger, dated as of March 14, 2007 and amended and restated as of June 8, 2007, by and among Argo Group International Holdings, Ltd. (formerly named PXRE Group Ltd.) (“Argo Group”), PXMS Inc. and Argonaut Group, Inc. (incorporated by reference to Exhibit 2.1 to the Current Report of Argo Group on Form 8-K filed with the Securities and Exchange Commission on August 8, 2007).
2.2	Recommend Cash Offer, dated as of April 17, 2008, by Argo Acquisition, Limited (a wholly owned subsidiary of Argo Group) for Heritage Underwriting Agency plc (incorporated by reference to Exhibit 99.1 to the Current Report of Argo Group on Form 8-K filed with the Securities and Exchange Commission on April 18, 2008).
3.1	Amended and Restated Memorandum of Association of Argo Group (incorporated by reference to Exhibit 3.1 to the Current Report of Argo Group on Form 8-K filed with the Securities and Exchange Commission on August 8, 2007).
3.2	Amended and Restated Bye-Laws of Argo Group (incorporated by reference to Appendix I to Argo Group’s Proxy Statement for the 2010 Annual General Meeting of Shareholders filed with the Securities and Exchange Commission on March 15, 2010).
4.1	Form of Certificate of Common Shares of Argo Group (incorporated by reference to Exhibit 4.1 to the Current Report of Argo Group on Form 8-K filed with the Securities and Exchange Commission on August 8, 2007).
4.2	Junior Subordinated Debentures1
4.3	Form of Senior Indenture among the Company, Argo Group US, Inc. and Wells Fargo Bank, National Association, as Trustee (incorporated by reference to Exhibit 4.3 of Argo Group’s registration statement on Form S-3 filed with the Securities and Exchange Commission on September 18, 2012).
4.4	Form of First Supplemental Indenture among the Company, Argo Group US, Inc. and Wells Fargo Bank, National Association, as Trustee (incorporated by reference to Exhibit 4.2 of Argo Group’s Form 8-A filed with the Securities and Exchange Commission on September 21, 2012).
4.5	Form of 6.500% Senior Notes due September 15, 2042 (incorporated by reference to Exhibit 4.3 of Argo Group’s Form 8-A filed with the Securities and Exchange Commission on September 21, 2012).
10.1	Deed Poll Guarantee of Argo Group in respect of PXRE Reinsurance Ltd., dated as of September 1, 2002 (incorporated by reference to Exhibit 10.3a to Argo Group’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2002).

1 Argo Group and its subsidiary, Argo Group US, Inc., have several series of outstanding junior subordinated debentures as described in the footnotes to our consolidated financial statements filed with our Annual Report on Form 10-K. We will provide the SEC with copies of the instruments governing such junior subordinated debentures upon the SEC’s request in accordance with Regulation S-K Item 601(b)(4)(iii)(A).

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10.2	Argo Group International Holdings, Ltd. 2007 Employee Share Purchase Plan (incorporated by reference to Exhibit 99.1 to Argo Group’s Registration Statement on Form S-8 filed with the Securities and Exchange Commission on December 10, 2007).*
10.3	Argo Group International Holdings, Ltd. 2007 Annual Incentive Compensation Plan (incorporated by reference to Appendix II to Argo Group’s Proxy Statement for the 2007 Annual General Meeting of Shareholders filed with the Securities and Exchange Commission on October 2, 2007).*
10.3A	Material Terms of the 2006 Annual Incentive Compensation Plan (incorporated by reference to Exhibit 10.20 to Argonaut Group, Inc.’s Form 10-K filed with the Securities and Exchange Commission on March 1, 2007).*
10.4	Argo Group International Holdings, Ltd. 2007 Long-Term Incentive Plan (incorporated by reference to Exhibit 99.2 to Argo Group’s Registration Statement on Form S-8 filed with the Securities and Exchange Commission on December 10, 2007).*
10.5	Argonaut Group, Inc. Amended and Restated Stock Incentive Plan (incorporated by reference to Exhibit 99.1 to Argo Group’s Registration Statement on Form S-8 filed with the Securities and Exchange Commission on November 29, 2007).*
10.6	Argonaut Group, Inc. Retirement Plan (incorporated by reference to Exhibit 10.2 to Argonaut Group, Inc.’s Form 10 Registration Statement dated September 3, 1986, filed with the Securities and Exchange Commission on September 4, 1986).*
10.7	401(k) Retirement Savings Plan (incorporated by reference to the Exhibit 10.4 to Argonaut Group, Inc.’s Form 10-K filed with the Securities and Exchange Commission on February 28, 1989).*
10.8	Argonaut Group, Inc. Amended and Restated Non-Employee Director Stock Option Plan (incorporated by reference to Exhibit 99.2 to Argo Group’s Registration Statement on Form S-8 filed with the Securities and Exchange Commission on November 29, 2007).*
10.9	$150,000,000 Credit Agreement dated as of April 30, 2010 among Argo Group International Holdings, Ltd., Argo Group US, Inc., Argo International Holdings Limited and Argo Underwriting Agency Limited, The Lenders Party thereto, JPMorgan Chase Bank, N.A., as administrative agent, and Wells Fargo Bank, N.A., as Syndication Agent and the other parties thereto (incorporated by reference to Exhibit 10.1 to Argo Group’s Current Report on Form 8-K filed with the Securities and Exchange Commission on May 6, 2010).
10.9A	Amendment No. 1, dated May 6, 2011, to $150,000,000 Credit Agreement dated as of April 30, 2010 among Argo Group International Holdings, Ltd., Argo Group US, Inc., Argo International Holdings Limited and Argo Underwriting Agency Limited, the Lenders party thereto, JPMorgan Chase Bank, N.A., as administrative agent, and Wells Fargo Bank, N.A., as Syndication Agent and the other parties thereto (incorporated by reference to Exhibit 10.6 to Argo Group’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2011).
10.9B	Amendment No. 2 to Credit Agreement, dated as of July 11, 2011, by and among Argo Group International Holdings, Ltd., Argo Group US, Inc., Argo Group International Holdings Limited and Argo Underwriting Agency Limited, JPMorgan Chase Bank, N.A., as administrative agent, and the other financial institutions party thereto (incorporated by reference to Exhibit 10.1 to Argo Group’s Current Report on Form 8-K filed with the Securities and Exchange Commission on July 15, 2011).
10.10	Executive Employment Agreement effective August 10, 2010 between Argo Group International Holdings, Ltd. and Mark E. Watson, III (incorporated by reference to Exhibit 10.1 to Argo Group’s Current Report on Form 8-K filed with the Securities and Exchange Commission on August 13, 2010).*
10.10A	Letter Agreement dated August 10, 2010 between Argo Group International Holdings, Ltd. and Mark E. Watson, III (incorporated by reference to Exhibit 10.2 to Argo Group’s Current Report on Form 8-K filed with the Securities and Exchange Commission on August 13, 2010).*

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10.10B	Letter Agreement, dated February 18, 2011, between Argo Group International Holdings, Ltd. and Mark E. Watson III (incorporated by reference to Exhibit 10.1 to Argo Group’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2011).*
10.10C	First Amendment to the Executive Employment Agreement, dated November 6, 2012, between Argo Group International Holdings, Ltd. and Mark E. Watson III (incorporated by reference to Argo Group’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2012).*
10.10D	Executive Employment Agreement, effective as of November 5, 2013, between Argo Group International Holdings, Ltd. and Mark E. Watson III (incorporated by reference to Argo Group’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2013).*
10.11	Letter Agreement dated August 17, 2007 between Argo Group International Holdings, Ltd. and Barbara Bufkin (incorporated by reference to Exhibit 10.1 to Argo Group’s Current Report on Form 8-K filed with the Securities and Exchange Commission on August 23, 2007).*
10.11A	Executive Employment Agreement, effective as of March 10, 2011, between Argo Group International Holdings, Ltd. and Barbara C. Bufkin (incorporated by reference to Exhibit 10.1 to the Current Report of Argo Group on Form 8-K filed on March 14, 2011).*
10.11B	Letter Agreement, dated March 10, 2011, between Argo Group International Holdings, Ltd. and Barbara C. Bufkin (incorporated by reference to Exhibit 10.2 to the Current Report of Argo Group on Form 8-K filed on March 14, 2011).*
10.11C	Separation Agreement and General Release, dated May 8, 2013, between Argo Group International Holdings, Ltd. and Barbara C. Bufkin (incorporated by reference to Exhibit 10.1 to Argo Group’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2013).*
10.12	Argo Group International Holdings, Ltd. Deferred Compensation Plan for Non-Employee Directors, effective February 12, 2008 (incorporated by reference to Exhibit 10.1 to Argo Group’s Current Report on Form 8-K filed with the Securities and Exchange Commission on February 15, 2008).*
10.13	First Amendment, effective November 2, 2009, to Argo Group International Holdings, Ltd. Deferred Compensation Plan for Non-Employee Directors (incorporated by reference to Exhibit 10.13 to Argo Group’s Annual Report on Form 10-K filed with the Securities and Exchange Commission on March 1, 2010).*
10.14	Executive Employment Agreement, effective November 9, 2010, between Argo Group and Jay S. Bullock (incorporated by reference to Exhibit 10.1 to Argo Group’s Current Report on Form 8-K filed with the Securities and Exchange Commission on November 12, 2010).*
10.14A	Letter Agreement dated November 9, 2010 between Argo Group International Holdings, Ltd. and Jay S. Bullock (incorporated by reference to Exhibit 10.2 to Argo Group’s Current Report on Form 8-K filed with the Securities and Exchange Commission on November 12, 2010).*
10.14B	Letter Agreement, dated August 4, 2011, from Argo Group International Holdings, Ltd. to Jay S. Bullock (incorporated by reference to Exhibit 10.1 to Argo Group’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2011).*
10.15	Employment Contract dated June 1, 2009, between Argo International (formerly known as Heritage Group Services Limited) and Julian Enoizi (incorporated by reference to Exhibit 10.18 to Argo Group’s Annual Report on Form 10-K filed with the Securities and Exchange Commission on March 1, 2010).*
10.15A	Compromise Agreement, dated January 13, 2011, between Argo Group Services Limited and Julian Enoizi (incorporated by reference to Exhibit 10.3 to Argo Group’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2011).
10.16	Employment Agreement, effective as of June 21, 2007, between Argo Re, Ltd. (formerly known as Peleus Reinsurance Ltd) and Andrew J. Carrier (incorporated by reference to Exhibit 10.2 to Argo Group’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2011).*
10.17	Compensation Clawback Policy (incorporated by reference to Exhibit 10.1 to Argo Group’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2012).
10.18	Second Amendment, effective December 16, 2013, to Argo Group International Holdings, Ltd. Deferred Compensation Plan for Non-Employee Directors.*
10.19	Executive Employment Agreement, effective as of March 1, 2013, between Argo Group US, Inc. and Kevin J. Rehnberg.*

81

12	Statements of computation of ratios of earnings to fixed charges and earnings to combined fixed charges and preferred share dividends.
21	Subsidiaries of Registrant, as amended.
23	Consent of Independent Registered Public Accounting Firm.
31.1	Rule 13a—14(a)/15d – 14(a) Certification of Chief Executive Officer.
31.2	Rule 13a—14(a)/15d – 14(a) Certification of Chief Financial Officer.
32.1	Certification of Chief Executive Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
32.2	Certification of Chief Financial Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
101.INS	XBRL Instance Document
101.SCH	XBRL Taxonomy Extension Schema Document
101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document
101.DEF	XBRL Taxonomy Extension Definition Linkbase Document
101.LAB	XBRL Taxonomy Extension Label Linkbase Document
101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document

* A management contract or compensatory plan required to be filed herewith.

82

SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

ARGO GROUP INTERNATIONAL HOLDINGS, LTD.
By	/s/ Mark E. Watson III
	Mark E. Watson III
	President and Chief Executive Officer

Date: February 28, 2014

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.

Signature	Title	Date
/s/ Mark E. Watson III Mark E. Watson III	President, Chief Executive Officer and Director (principal executive officer)	February 28, 2014
/s/ Jay S. Bullock Jay S. Bullock	Executive Vice President and Chief Financial Officer (principal financial and accounting officer)	February 28, 2014
/s/ Gary V. Woods Gary V. Woods	Director	February 28, 2014
/s/ F. Sedgwick Browne F. Sedgwick Browne	Director	February 28, 2014
/s/ H. Berry Cash H. Berry Cash	Director	February 28, 2014
/s/ Hector DeLeon Hector DeLeon	Director	February 28, 2014
/s/ Nabil N. El-Hage Nabil N. El-Hage	Director	February 28, 2014
/s/ Mural R. Josephson Mural R. Josephson	Director	February 28, 2014
/s/ Kathleen A. Nealon Kathleen A. Nealon	Director	February 28, 2014
/s/ John R. Power, Jr. John R. Power, Jr.	Director	February 28, 2014
/s/ John H. Tonelli John H. Tonelli	Director	February 28, 2014

83

INDEX TO CONSOLIDATED FINANCIAL STATEMENTS

Report of Independent Registered Public Accounting Firm	F-2
Consolidated Financial Statements:
Consolidated Balance Sheets	F-3
Consolidated Statements of Income (Loss)	F-4
Consolidated Statements of Comprehensive Income (Loss)	F-5
Consolidated Statements of Shareholders’ Equity	F-6
Consolidated Statements of Cash Flows	F-7
Notes to Consolidated Financial Statements	F-8
Supplementary Financial Statement Schedules:
Schedule II—Condensed Financial Information of Registrant	F-57
Schedule III—Supplementary Insurance Information	F-59
Schedule V—Valuation and Qualifying Accounts	F-60
Schedule VI—Supplementary Information for Property-Casualty Insurance Companies	F-61

F-1

Report of Independent Registered Public Accounting Firm

The Board of Directors and Shareholders of Argo Group International Holdings, Ltd.:

We have audited the accompanying consolidated balance sheets of Argo Group International Holdings, Ltd. (the Company) as of December 31, 2013 and 2012, and the related consolidated statements of income (loss), comprehensive income (loss), shareholders’ equity, and cash flows for each of the three years in the period ended December 31, 2013. Our audits also included the financial statement schedules listed in the Table of Contents at Item 15. These consolidated financial statements and schedules are the responsibility of the Company’s management. Our responsibility is to express an opinion on these financial statements and schedules based on our audits.

We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements. An audit also includes assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion.

In our opinion, the financial statements referred to above present fairly, in all material respects, the consolidated financial position of Argo Group International Holdings, Ltd. at December 31, 2013 and 2012, and the consolidated results of its operations and its cash flows for each of the three years in the period ended December 31, 2013, in conformity with U.S. generally accepted accounting principles. Also in our opinion, the related financial statement schedules, when considered in relation to the basic financial statements taken as a whole, present fairly in all material respects the information set forth therein.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), Argo Group International Holdings, Ltd.’s internal control over financial reporting as of December 31, 2013, based on criteria established in Internal Control—Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (1992 framework) and our report dated February 28, 2014 expressed an unqualified opinion thereon.

/s/ Ernst & Young LLP

San Antonio, Texas

February 28, 2014

F-2

ARGO GROUP INTERNATIONAL HOLDINGS, LTD.

CONSOLIDATED BALANCE SHEETS

(in millions, except number of shares and per share amounts)

	December 31,
	2013			2012
Assets
Investments:
Fixed maturities, at fair value:
Available-for-sale (cost: 2013—$2,760.1; 2012—$2,993.1)	$	2,814.4		$	3,154.0
Equity securities, at fair value (cost: 2013—$346.9; 2012—$373.5)		534.3			521.4
Other investments (cost: 2013—$377.4; 2012—$294.8)		378.9			291.0
Short-term investments, at fair value (cost: 2013—$351.6; 2012—$234.3)		351.6			234.3
Total investments		4,079.2			4,200.7
Cash		157.4			95.8
Accrued investment income		25.7			30.3
Premiums receivable		348.4			361.0
Reinsurance recoverables		1,263.5			1,320.9
Goodwill		153.8			153.8
Intangible assets, net of accumulated amortization		86.0			91.5
Current income taxes receivable, net		0.0			12.9
Deferred acquisition costs, net		113.9			99.4
Ceded unearned premiums		196.3			193.6
Other assets		166.8			129.0
Total assets	$	6,591.0		$	6,688.9
Liabilities and Shareholders’ Equity
Reserves for losses and loss adjustment expenses	$	3,230.3		$	3,223.5
Unearned premiums		779.1			730.2
Accrued underwriting expenses		122.3			105.0
Ceded reinsurance payable, net		354.7			612.1
Funds held		43.7			33.7
Senior unsecured fixed rate notes		143.8			143.8
Other indebtedness		66.3			63.8
Junior subordinated debentures		193.3			193.3
Current income taxes payable, net		5.2			0.0
Deferred tax liabilities, net		28.7			43.8
Other liabilities		60.6			25.6
Total liabilities		5,028.0			5,174.8
Shareholders’ equity:
Common shares—$1.00 par, 500,000,000 shares authorized; 34,066,889 and 31,384,271 shares issued and outstanding at December 31, 2013 and 2012, respectively		34.1			31.4
Additional paid-in capital		827.3			722.7
Treasury shares (7,558,345 and 6,459,613 shares at December 31, 2013 and 2012, respectively)		(250.6	)		(205.5	)
Retained earnings		804.4			776.0
Accumulated other comprehensive income, net of taxes		147.8			189.5
Total shareholders’ equity		1,563.0			1,514.1
Total liabilities and shareholders’ equity	$	6,591.0		$	6,688.9

See accompanying notes.

F-3

ARGO GROUP INTERNATIONAL HOLDINGS, LTD.

CONSOLIDATED STATEMENTS OF INCOME (LOSS)

(in millions, except number of shares and per share amounts)

	For the Years Ended December 31,
	2013			2012			2011
Premiums and other revenue:
Earned premiums	$	1,303.8		$	1,186.5		$	1,082.0
Net investment income		100.0			118.8			125.8
Fee (expense) income, net		(4.9	)		5.3			1.4
Net realized investment and other gains		71.3			25.7			49.2
Total revenue		1,470.2			1,336.3			1,258.4
Expenses:
Losses and loss adjustment expenses		742.0			747.6			863.1
Other reinsurance-related expenses		19.2			27.3			5.9
Underwriting, acquisition and insurance expenses		510.8			464.5			425.7
Interest expense		20.2			23.7			22.1
Debt extinguishment costs		0.0			2.2			0.0
Foreign currency exchange (gain) loss		(1.7	)		4.3			3.5
Total expenses		1,290.5			1,269.6			1,320.3
Income (loss) before income taxes		179.7			66.7			(61.9	)
Provision for income taxes		36.5			14.4			20.0
Net income (loss)	$	143.2		$	52.3		$	(81.9	)
Net income (loss) per common share:
Basic	$	5.33		$	1.86		$	(2.74	)
Diluted	$	5.14		$	1.83		$	(2.74	)
Dividend declared per common share	$	0.59		$	0.44		$	0.44
Weighted average common shares:
Basic		26,851,341			28,095,210			29,887,249
Diluted		27,869,533			28,650,448			29,887,249
	For the Years Ended December 31,
	2013			2012			2011
Net realized investment and other gains before other-than-temporary impairment losses	$	79.1		$	29.4		$	50.4
Other-than-temporary impairment losses recognized in earnings:
Other-than-temporary impairment losses on fixed maturities		(6.0	)		(1.5	)		(0.1	)
Other-than-temporary impairment losses on equity securities		(1.8	)		(2.2	)		(1.1	)
Non-credit portion of losses recognized in other comprehensive income		0.0			0.0			0.0
Impairment losses recognized in earnings		(7.8	)		(3.7	)		(1.2	)
Net realized investment and other gains	$	71.3		$	25.7		$	49.2

See accompanying notes.

F-4

ARGO GROUP INTERNATIONAL HOLDINGS, LTD.

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)

(in millions)

	For the Years Ended December 31,
	2013			2012			2011
Net income (loss)	$	143.2		$	52.3		$	(81.9	)
Other comprehensive income (loss):
Foreign currency translation adjustments		(2.8	)		(2.3	)		(6.4	)
Defined benefit pension plans:
Net gain (loss) arising during the year		2.0			(0.9	)		(2.2	)
Unrealized gains on securities:
Gains arising during the year		1.2			87.4			50.4
Reclassification adjustment for gains included in net income (loss)		(59.8	)		(14.4	)		(43.2	)
Other comprehensive (loss) income before tax		(59.4	)		69.8			(1.4	)
Income tax (benefit) provision related to other comprehensive income (loss):
Defined benefit pension plans:
Net gain (loss) arising during the year		0.7			(0.3	)		(0.8	)
Unrealized gains on securities:
Gains arising during the year		1.0			24.4			21.7
Reclassification adjustment for gains included in net income (loss)		(19.4	)		(4.0	)		(14.5	)
Income tax (benefit) provision related to other comprehensive income (loss)		(17.7	)		20.1			6.4
Other comprehensive (loss) income, net of tax		(41.7	)		49.7			(7.8	)
Comprehensive income (loss)	$	101.5		$	102.0		$	(89.7	)

See accompanying notes.

F-5

ARGO GROUP INTERNATIONAL HOLDINGS, LTD.

CONSOLIDATED STATEMENTS OF SHAREHOLDERS’ EQUITY

(in millions, except number of shares and per share amounts)

	Common Shares		Additional Paid-In Capital			Treasury Shares			Retained Earnings			Accumulated Other Comprehensive Income (Loss)			Shareholders’ Equity
Balance, January 1, 2011	$	31.2	$	711.4		$	(111.6	)	$	831.0		$	147.6		$	1,609.6
Net loss		0.0		0.0			0.0			(81.9	)		0.0			(81.9	)
Other comprehensive loss		0.0		0.0			0.0			0.0			(7.8	)		(7.8	)
Repurchase of common shares (1,607,745 at a weighted average price of $30.72)		0.0		0.0			(49.3	)		0.0			0.0			(49.3	)
Activity under stock incentive plans		0.1		4.7			0.0			0.0			0.0			4.8
Retirement of common shares (tax payments on non-vested stock)		0.0		(0.4	)		0.0			0.0			0.0			(0.4	)
Deferred tax—share-based payments		0.0		(0.1	)		0.0			0.0			0.0			(0.1	)
Employee stock purchase plan		0.0		1.2			0.0			0.0			0.0			1.2
Cash dividend declared—common shares ($0.44/share)		0.0		0.0			0.0			(13.1	)		0.0			(13.1	)
Balance, December 31, 2011		31.3		716.8			(160.9	)		736.0			139.8			1,463.0
Net income		0.0		0.0			0.0			52.3			0.0			52.3
Other comprehensive income		0.0		0.0			0.0			0.0			49.7			49.7
Repurchase of common shares (1,488,308 at a weighted average price of $29.92)		0.0		0.0			(44.6	)		0.0			0.0			(44.6	)
Activity under stock incentive plans		0.1		5.1			0.0			0.0			0.0			5.2
Retirement of common shares (tax payments on non-vested stock)		0.0		(0.4	)		0.0			0.0			0.0			(0.4	)
Deferred tax—share-based payments		0.0		0.0			0.0			0.0			0.0			0.0
Employee stock purchase plan		0.0		1.2			0.0			0.0			0.0			1.2
Cash dividend declared—common shares ($0.44/share)		0.0		0.0			0.0			(12.3	)		0.0			(12.3	)
Balance, December 31, 2012		31.4		722.7			(205.5	)		776.0			189.5			1,514.1
Net income		0.0		0.0			0.0			143.2			0.0			143.2
Other comprehensive loss		0.0		0.0			0.0			0.0			(41.7	)		(41.7	)
Repurchase of common shares (1,098,732 at a weighted average price of $41.04)		0.0		0.0			(45.1	)		0.0			0.0			(45.1	)
Activity under stock incentive plans		0.2		8.5			0.0			0.0			0.0			8.7
Retirement of common shares (tax payments on non-vested stock)		0.0		(1.9	)		0.0			0.0			0.0			(1.9	)
Deferred tax—share-based payments		0.0		0.1			0.0			0.0			0.0			0.1
Employee stock purchase plan		0.1		1.3			0.0			0.0			0.0			1.4
10% stock dividend		2.4		96.6			0.0			(99.0	)		0.0			0.0
Cash dividend declared—common shares ($0.59/share)		0.0		0.0			0.0			(15.8	)		0.0			(15.8	)
Balance, December 31, 2013	$	34.1	$	827.3		$	(250.6	)	$	804.4		$	147.8		$	1,563.0

See accompanying notes.

F-6

ARGO GROUP INTERNATIONAL HOLDINGS, LTD.

CONSOLIDATED STATEMENTS OF CASH FLOWS

(in millions)

	For the Years Ended December 31,
	2013			2012			2011
Cash flows from operating activities:
Net income (loss)	$	143.2		$	52.3		$	(81.9	)
Adjustments to reconcile net income (loss) to net cash (used) provided by operating activities:
Amortization and depreciation		39.6			36.6			30.8
Share-based payments expense		23.3			10.5			4.6
Excess tax (benefit) expense from share-based payment arrangements		(0.2	)		0.0			0.1
Deferred income tax provision, net		3.8			5.0			10.2
Net realized investment and other gains		(71.3	)		(25.7	)		(49.2	)
Loss on disposals of fixed assets, net		0.2			0.3			1.0
Debt extinguishment costs		0.0			2.2			0.0
Change in:
Accrued investment income		5.3			2.0			1.2
Receivables		86.7			24.9			53.6
Deferred acquisition costs		(14.1	)		2.1			12.9
Ceded unearned premiums		(4.0	)		(14.5	)		(15.4	)
Reserves for losses and loss adjustment expenses		(8.9	)		(78.9	)		138.9
Unearned premiums		51.4			72.6			4.1
Ceded reinsurance payable and funds held		(246.4	)		(67.5	)		(97.4	)
Income taxes		17.0			(1.7	)		(6.7	)
Accrued underwriting expenses		(4.0	)		21.0			(5.8	)
Other, net		(21.8	)		(10.7	)		(18.7	)
Cash (used) provided by operating activities		(0.2	)		30.5			(17.7	)
Cash flows from investing activities:
Sales of fixed maturity investments		1,795.4			1,117.8			1,326.9
Maturities and mandatory calls of fixed maturity investments		281.8			483.0			450.9
Sales of equity securities		163.4			10.4			41.3
Sales of other investments		7.5			2.5			2.5
Purchases of fixed maturity investments		(1,822.9	)		(1,501.5	)		(1,605.6	)
Purchases of equity securities		(80.0	)		(104.4	)		(99.6	)
Purchases of other investments		(72.9	)		(15.6	)		(73.2	)
Change in foreign regulatory deposits and voluntary pools		(7.7	)		(21.0	)		(7.5	)
Change in short-term investments		(145.3	)		58.7			77.6
Settlements of foreign currency exchange forward contracts		(3.9	)		0.4			7.7
Purchases of fixed assets		(26.1	)		(34.1	)		(16.5	)
Other, net		31.5			0.1			(2.4	)
Cash provided (used) by investing activities		120.8			(3.7	)		102.1
Cash flows from financing activities:
Proceeds from issuance of senior unsecured fixed rate notes, net		0.0			138.7			0.0
Redemption of trust preferred securities, net		0.0			(117.2	)		0.0
Activity under stock incentive plans		2.6			1.2			1.1
Repurchase of Company’s common shares		(46.5	)		(44.2	)		(49.5	)
Excess tax expense (benefit) from share-based payment arrangements		0.2			0.0			(0.1	)
Payment of cash dividends to common shareholders		(15.8	)		(12.3	)		(13.1	)
Cash used by financing activities		(59.5	)		(33.8	)		(61.6	)
Effect of exchange rate changes on cash		0.5			0.1			(3.6	)
Change in cash		61.6			(6.9	)		19.2
Cash, beginning of year		95.8			102.7			83.5
Cash, end of year	$	157.4		$	95.8		$	102.7

See accompanying notes.

F-7

ARGO GROUP INTERNATIONAL HOLDINGS, LTD.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

1. Business and Significant Accounting Policies

Business

Argo Group International Holdings, Ltd. (“Argo Group,” “we” or the “Company”) is an international underwriter of specialty insurance and reinsurance products in the property and casualty market. Argo Group US, Inc. (“Argo Group US”) is a subsidiary of Argo Financial Holding (Ireland), Ltd. (“Argo Ireland”). Argo Underwriting Agency Limited (“Argo International”) is a subsidiary of Argo International Holdings, Ltd. Argo Re, Ltd. (“Argo Re”), a Bermuda based company, is the parent of both Argo Ireland and Argo International Holdings, Ltd. Argo Re is directly owned by Argo Group.

We conduct our ongoing business through four segments.

Excess and Surplus Lines products are written under two operating platforms: Colony Specialty and Argo Pro.

Commercial Specialty consists of the following operations: Argo Insurance, Rockwood Casualty Insurance Company (“Rockwood”), Argo Surety, Alteris and ARIS Title Insurance Corporation (“ARIS”).

International Specialty products are provided by our Bermuda operations, which include Argo Re and Argo Insurance – Casualty and Professional Lines and Argo Seguros Brasil S.A. based in Brazil.

Syndicate 1200 products are written by Argo International based in London, and are focused on underwriting on behalf of one underwriting syndicate under the Lloyd’s of London (“Lloyd’s”) global franchise.

Our Run-off Lines segment includes liabilities associated with other liability policies that were issued in the 1960s, 1970s and into the 1980s, as well as risk management policies written prior to the sale of renewal rights and other business previously written and classified as property catastrophe and Lloyd’s.

Basis of Presentation and Use of Estimates

The consolidated financial statements of Argo Group and its subsidiaries have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”). The preparation of consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and reported amounts of revenues and expenses during the reporting period. The major estimates reflected in our consolidated financial statements include, but are not limited to, reserves for losses and loss adjustment expenses; reinsurance recoverables, including the reinsurance recoverables allowance for doubtful accounts; estimates of written and earned premiums; reinsurance premium receivable; fair value of investments and assessment of potential impairment; valuation of goodwill and intangibles and our deferred tax asset valuation allowance. Actual results could differ from those estimates.

Specifically, estimates for reserves for losses and loss adjustment expenses are based upon past claim experience modified for current trends as well as prevailing economic, legal and social conditions. Although management believes that amounts included in the accompanying consolidated financial statements are reasonable, such estimates may be more or less than the amounts ultimately paid when the claims are settled. The estimates are continually reviewed and any changes are reflected in current operating results. Further, the nature of loss exposures involves significant variability due to the long-tailed payments on claims related to asbestos and environmental coverage and workers compensation coverage. As such, losses and loss adjustment expenses could vary significantly from the recorded amounts.

The consolidated financial statements include the accounts and operations of Argo Group and its subsidiaries. All material intercompany accounts and transactions have been eliminated. Certain amounts in prior years’ financial statements have been reclassified to conform to the current presentation. Amounts related to trade capital providers, who are third party capital participants that provide underwriting capital to the Syndicate 1200 segment, are included in the balance sheet. Trade capital providers participate on a quota share basis, assuming 100% of their contractual participation in the underwriting syndicate results and with such results settled on a year of account basis. The underwriting syndicate underwrites under the Lloyd’s global franchise.

F-8

In 2009, the Financial Accounting Standards Board (“FASB”) issued revised accounting standards regarding consolidation of variable interest entities. We reevaluated our investment in our twelve statutory trusts (collectively, the “Trusts”) and two charitable foundations (collectively, the “Foundations”). We determined that the Trusts and Foundations continue to be variable interest entities due to the fact that the Trusts and Foundations do not have sufficient equity to finance their activities without additional subordinate financial support from other parties. We do not have any power to direct the activities that impact the Trusts or Foundations’ economic performance. We are not entitled to receive a majority of the residual returns of the Trusts and U.S. charitable foundation. Additionally, we are not responsible for absorbing the majority of the expected losses of the Trusts or U.S. charitable foundation; therefore, we are not the primary beneficiary and, accordingly, the Trusts and U.S. charitable foundation are not included in our consolidated financial statements. The expenses and donations of the charitable foundation in Bermuda are paid by Argo Group and have been included in the consolidated results.

The special purpose reinsurance company established in 2011 to provide reinsurance to Argo Group through two catastrophe bond transactions is a variable interest entity under the provisions of Accounting Standards Codification (“ASC”) Topic 810-10, “Consolidation”. Argo Group does not have a variable interest in this entity and is therefore not required to consolidate it in its consolidated financial statements.

10% Stock Dividend

On May 7, 2013, our Board of Directors declared a 10% stock dividend, payable on June 17, 2013, to shareholders of record at the close of business on June 3, 2013. As a result of the stock dividend, 2,447,839 additional shares were issued. Cash was paid in lieu of fractional shares of our common shares. All references to share and per share amounts in this document and related disclosures have been adjusted to reflect the stock dividend for all periods presented.

Cash

Cash consists of cash deposited in banks, generally in concentration and operating accounts. Interest-bearing cash accounts are classified as short-term investments.

Investments

Investments in fixed maturities at December 31, 2013 and 2012 include bonds and structured securities. Equity securities include common and preferred stocks. Other investments consist of foreign regulatory deposits, limited partnerships, private equity funds, voluntary pools and foreign exchange currency forward contracts. Short-term investments consist of money market funds, funds on deposit with Lloyd’s as security to support the corporate member’s capital, U.S. Treasury bills, sovereign debt and interest-bearing cash accounts. Investments maturing in less than one year are classified as short-term investments in our consolidated financial statements.

The amortized cost of fixed maturity securities is adjusted for amortization of premiums and accretion of discounts. This amortization or accretion is included in “Net investment income” in our Consolidated Statements of Income (Loss).

For the structured securities portion of the fixed maturity securities portfolio, we recognize income using a constant effective yield based on anticipated prepayments and the estimated economic life of the securities. Premium or discount on high investment grade securities (rated AA or higher) is amortized into income using the retrospective method. Premium or discount on lower grade securities (rated less than AA) is amortized into income using the prospective method.

Our investments in fixed maturities and equity securities with readily determinable fair value are considered available-for-sale and are carried at fair value. Changes in the fair value of investments classified as available-for-sale are not recognized to income during the period, but rather are recognized as a separate component of shareholders’ equity until realized. Fair value of these investments is estimated using prices obtained from third party pricing services, where available. For securities where we were unable to obtain fair values from a pricing service or broker, fair values were estimated using information obtained from investment advisors. We performed several processes to ascertain the reasonableness of these investment values by i) obtaining and reviewing internal control reports for our service providers that obtain fair values from third party pricing services, ii) discussing with our investment managers their process for reviewing and validating pricing obtained from outside services and

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obtaining values for all securities from our investment managers and iii) comparing the security pricing received from the investment managers with the prices used in the consolidated financial statements and obtaining additional information for variances that exceeded a certain threshold. As of December 31, 2013, investments we hold for which we did not receive a fair value from a pricing service or broker accounted for less than 1% of our investment portfolio. The actual value at which these securities could actually be sold or settled with a willing buyer or seller may differ from our estimated fair values depending on a number of factors including, but not limited to, the current and future economic conditions, quantity sold or settled, presence of an active market and availability of a willing buyer or seller. The cost of securities sold is based on the specific identification method.

Changes in the value of other investments consisting of limited partnerships, private equity funds and voluntary pools are principally recognized to income during the period utilizing the equity method of accounting. Our foreign regulatory deposits are assets held in trust in jurisdictions where there is a legal and regulatory requirement to maintain funds locally in order to protect policyholders. Lloyd’s is the appointed investment manager for the funds. The underlying assets are invested in government securities, agency securities and corporate bonds whose values are obtained from Lloyd’s. Foreign currency future contracts held by us are valued by our counterparty using market driven foreign currency exchange rates.

We evaluate our investments for other-than-temporary impairment. For fixed maturity securities, the evaluation for a credit loss is generally based on the present value of expected cash flows of the security as compared to the amortized book value. For mortgage-backed securities, frequency and severity of loss inputs are used in projecting future cash flows of the securities. Loss frequency is measured as the credit default rate, which includes such factors as loan-to-value ratios and credit scores of borrowers. Loss severity includes such factors as trends in overall housing prices and house prices that are obtained at foreclosure. For equity securities, the length of time and the amount of decline in fair value are the principal factors in determining other-than-temporary impairment.

All investment balances include amounts relating to trade capital providers. The results of operations and other comprehensive income exclude amounts relating to trade capital providers. Trade capital providers’ participation in the syndicate results are included in reinsurance recoverable for ceded losses and reinsurance payable for ceded premiums.

Receivables

Premiums receivable, representing amounts due from insureds, are presented net of an allowance for doubtful accounts. The allowances for doubtful accounts were $4.5 million and $2.5 million at December 31, 2013 and 2012, respectively. Premiums receivable include amounts relating to the trade capital providers’ quota share.

Reinsurance recoverables represent amounts of paid losses and loss adjustment expenses, case reserves and incurred but not reported amounts ceded to reinsurers under reinsurance treaties. Reinsurance recoverables also reflect amounts that are due from trade capital providers. Reinsurance recoverables are presented in our Consolidated Balance Sheets net of an allowance for doubtful accounts of $3.7 million and $4.4 million at December 31, 2013 and 2012, respectively (see Note 3, “Reinsurance” for related disclosures).

An estimate of amounts that are likely to be charged off is established as an allowance for doubtful accounts as of the balance sheet date. Our estimate includes specific insured and reinsurance balances that are considered probable to be charged off after all collection efforts have ceased and in accordance with historical write-off trends based on aging categories. For the years ended December 31, 2013, 2012 and 2011, premiums receivable and reinsurance recoverables on paid losses written off, net of recoveries against the allowance for doubtful accounts or directly to the income statement are as follows:

(in millions)	2013			2012			2011
Premiums receivable	$	0.2		$	0.3		$	0.9
Reinsurance recoverables		(0.0	)		(0.4	)		11.4
Net written off (recovered)	$	0.2		$	(0.1	)	$	12.3

Recoveries occur when subsequent collection or litigation results in the receipt of amounts previously written off. Amounts recovered are applied against the bad debt expense account.

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Earned Premiums

Premium revenue is recognized ratably over the policy period, with an adjustment, where appropriate, to reflect the risk profile of certain classes of business, particularly those exposed to seasonal weather related events. Premiums that have yet to be earned are reported as “Unearned premiums” in our Consolidated Balance Sheets.

Unearned premium balances include cessions to reinsurers including trade capital providers, while the earned premium recognized in our Consolidated Statements of Income (Loss) excludes amounts relating to trade capital providers. The trade capital providers’ quota share amount is included in “Ceded reinsurance payable, net”.

Assumed reinstatement premiums that reinstate coverage are written and earned at the time the associated loss event occurs. The original premium is earned over the remaining exposure period of the contract. Reinstatement premiums are estimated based upon contract terms for reported losses and estimated for incurred but not reported losses.

Goodwill and Intangible Assets

Goodwill and intangible assets are allocated to the segment in which the results of operations for the acquired company are reported (see Note 16, “Segment Information” for further discussion). Intangible assets with a finite life are amortized over the estimated useful life of the asset. Goodwill and intangible assets with an indefinite useful life are not amortized. Goodwill and intangible assets are tested for impairment on an annual basis or more frequently if events or changes in circumstances indicate that the carrying amount may not be recoverable. For goodwill, we may perform a qualitative test to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount as a basis for determining whether it is necessary to perform the quantitative two-step goodwill impairment test. Based on prior goodwill impairment testing, we determined the performance of the quantitative two-step impairment test was required for 2013. The first step is to identify if a potential impairment exists by comparing the fair value of a reporting unit with its carrying amount, including goodwill (“Step 1”). If the fair value of a reporting unit exceeds its carrying value amount, goodwill of the reporting unit is not considered to have a potential impairment and the second step is not necessary. However, if the carrying amount of the reporting unit exceeds its fair value, the second step (“Step 2”) is performed to determine if goodwill is impaired and to measure the amount of impairment loss to recognize, if any. Step 2 compares the implied fair value of goodwill with the carrying amount of goodwill. If the implied value of goodwill is less than the carrying amount of goodwill, it is written down to its fair value with a corresponding expense reflected in the Consolidated Statements of Income (Loss). The implied goodwill is calculated based on a hypothetical purchase price allocation, similar to the requirements in the accounting guidance for business combinations, whereby the implied fair value of the reporting unit is allocated to the fair value of the assets and liabilities of the reporting unit.

We perform our goodwill impairment test on the first day of the fourth quarter of each year, or October 1 of each year. In performing Step 1 of the impairment test, we estimated the fair value of reporting units using an average of three valuation methods: a comparable company analysis, a precedent transaction analysis and a discounted cash flow analysis. All three methods require management to make various judgments and assumptions. The discounted cash flow analysis included projections of earned premiums, loss ratios, expense growth and discount rates for each reporting unit. Assumptions about such future cash flows are based on our budgets, business plans, economic projections, anticipated future cash flows and market data. Finally, the comparable company analysis and precedent transaction analysis required judgment in selecting comparable companies and comparable transactions for use in the calculations. In all instances, future changes in these judgments and assumptions could cause impairment of goodwill.

For the years ended December 31, 2013, 2012 and 2011, all of our reporting units passed Step 1 of the goodwill impairment analysis. However, based on carrying values of the reporting units as of December 31, 2013, a 38% decline in the fair value of the Excess and Surplus Lines reporting unit, 21% decline in the fair value of the Commercial Specialty reporting unit or 16% decline in the fair value of the Syndicate 1200 reporting unit would have resulted in the carrying values of these reporting units being in excess of their respective fair values, resulting in the need to perform Step 2, which could have resulted in a material impairment to our goodwill. Any decline in the fair value of these reporting units could result in the carrying value of the reporting unit being in excess of fair value, triggering Step 2 of the impairment testing model, which could result in an impairment of goodwill.

As noted above, we have elected to make the first day of the fourth quarter the annual impairment assessment date for goodwill and indefinite-lived intangible assets. An impairment analysis subsequent to this date has not been performed as management believes that no additional indicators of impairment have arisen, such as significant additional pricing competition, unexpected significant declines in operating results, divestiture of a significant component of the business or a significant decline in our market capitalization.

F-11

The following table presents our intangible assets and accumulated amortization at December 31:

	December 31, 2013				December 31, 2012
(in millions)	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
Lloyd’s capacity	$	60.5		n/a	$	60.5		n/a
Title plant		1.8		n/a		1.8		n/a
Distribution network		44.8		23.1		44.2		18.0
Additional Lloyd’s capacity		4.8		3.2		4.8		2.3
Other		1.5		1.1		1.5		1.0
	$	113.4	$	27.4	$	112.8	$	21.3

The weighted average useful life by category at December 31, 2013 was 9.8 years for the distribution network, 5.0 years for the additional Lloyd’s capacity and 9.0 years for other. The weighted average useful life for all categories was 9.3 years at December 31, 2013.

During the twelve months ended December 31, 2013, 2012 and 2011, amortization expense was $6.1 million, $5.2 million and $4.6 million, respectively, and is included in “Underwriting, acquisition and insurance expenses” in our Consolidated Statements of Income (Loss).

The estimated amortization expense for the years ended December 31, 2014, 2015, 2016, 2017 and 2018 is $5.4 million, $5.4 million, $5.1 million, $4.4 million and $2.4 million, respectively.

Retrospectively Rated Policies

We have written a number of workers compensation, property and other liability policies that are retrospectively rated. Under this type of policy, the policyholder or coverholder may be entitled, subsequent to coverage expiration, to a refund or may owe additional premiums based on the amount of losses incurred under the policy. The retrospective premium adjustments on certain policies are limited to a minimum or maximum premium adjustment, which is calculated as a percentage of the standard amount of premium charged during the life of the policy. Accrued retrospectively rated premiums have been determined based on estimated ultimate loss experience of the individual policyholder accounts. The estimated liability for return of premiums under retrospectively rated policies is included in unearned premiums and was $6.8 million and $7.0 million at December 31, 2013 and 2012, respectively.

Deferred Acquisition Costs

Policy acquisition costs, which include commissions, premium taxes, fees and certain other costs of underwriting policies, are deferred, when such policies are profitable, and amortized over the same period in which the related premiums are earned. To qualify for capitalization, the policy acquisition cost must be directly related to the successful acquisition of an insurance contract. Anticipated investment income is considered in determining whether the deferred acquisition costs are recoverable and whether a premium deficiency exists. We continually review the methods of making such estimates and establishing the deferred costs with any adjustments made in the accounting period in which the adjustment arose.

The 2013 and 2012 net amortization of policy acquisition costs will not equal the change in our Consolidated Balance Sheets as the trade capital providers’ share is not reflected in our Consolidated Statements of Income (Loss) and differences arise from foreign currency exchange rates applied to deferred acquisition costs which are treated as a nonmonetary asset.

Reserves for Losses and Loss Adjustment Expenses

Liabilities for unpaid losses and loss adjustment expenses include the accumulation of individual case estimates for claims reported as well as estimates of incurred but not reported claims and estimates of claim settlement expenses. Reinsurance recoverables on unpaid claims and claim expenses represent estimates of the portion of such liabilities that will be recoverable from reinsurers. Amounts recoverable from reinsurers are recognized as assets at the same time and in a manner consistent with the unpaid claims liabilities associated with the reinsurance policy (for additional information, see heading “Reinsurance” below).

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Property and Equipment

Property and equipment used in operations, including certain costs incurred to develop or obtain computer software for internal use, are capitalized and carried at cost less accumulated depreciation and are reported in “Other assets” in our Consolidated Balance Sheets. Depreciation is calculated using a straight-line method over the estimated useful lives of the assets, generally three to forty years. The accumulated depreciation for property and equipment was $65.5 million and $53.1 million at December 31, 2013 and 2012, respectively. The net book value of our property and equipment at December 31, 2013 and 2012 was $79.0 million and $68.7 million, respectively. The depreciation expense at December 31, 2013, 2012 and 2011 was $15.5 million, $12.6 million and $10.1 million, respectively.

Foreign Currency Exchange Gain (Loss)

The U.S. Dollar is the functional currency of all but two of our foreign operations. Monetary assets and liabilities in foreign operations that are denominated in foreign currencies are revalued at the exchange rates in effect at the balance sheet date. The resulting gains and losses from changes in the foreign exchange rates are reflected in net income. Revenues and expenses denominated in foreign currencies are translated at the prevailing exchange rate during the period with the resulting foreign exchange gains and losses included in net income for the period. In the case of our foreign currency denominated available-for-sale investments, the change in exchange rates between the local currency and our functional currency at each balance sheet date represents an unrealized appreciation or depreciation in value of these securities and is included as a component of accumulated other comprehensive gain.

Translation gains and losses related to our operations in Brazil and Malta are recorded as a component of shareholders’ equity in our Consolidated Balance Sheets. At December 31, 2013 and 2012, the foreign currency translation adjustments were a loss of $11.5 million and $8.7 million, respectively.

Share-Based Payments

Compensation expense for share-based payments is recognized based on the measurement-date fair value for awards that will settle in shares. Awards that are expected to be settled in cash are accounted for as liability awards, resulting in the fair value of the award being measured at each reporting date until the award is exercised, forfeited or expires unexercised. Compensation expense for awards that are settled in equity are recognized on a straight line pro rata basis over the vesting period. Compensation expense for awards that are settled in cash are recognized on the accelerated recognition method over the award’s vesting period. See Note 15, “Share-based Compensation” for related disclosures.

Income Taxes

Deferred tax assets and liabilities are recognized for the estimated future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Deferred tax assets and liabilities are measured using enacted tax rates in effect for the year in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in net income in the period in which the change is enacted.

For any uncertain tax positions not meeting the “more-likely-than-not” recognition threshold, accounting standards require recognition, measurement and disclosure in a company’s financial statements. We had no material unrecognized tax benefits as of December 31, 2013, 2012 and 2011. Our United States subsidiaries are no longer subject to U.S. federal and state income tax examinations by tax authorities for years before 2010. Our United Kingdom subsidiaries are no longer subject to United Kingdom income tax examinations by Her Majesty’s Revenue and Customs for years before 2011.

Reinsurance

In the normal course of business, our insurance and reinsurance subsidiaries reinsure various risks above certain retention levels with other insurance enterprises. Reinsurance recoverables include claims we paid and estimates of unpaid losses and loss adjustment expenses that are subject to reimbursement under reinsurance and retrocessional contracts. The method for

F-13

determining reinsurance recoverables for unpaid losses and loss adjustment expenses involves reviewing actuarial estimates of gross unpaid losses and loss adjustment expenses to determine our ability to cede unpaid losses and loss adjustment expenses under our existing reinsurance contracts. This method is continually reviewed and updated and any resulting adjustments are reflected in earnings in the period identified. Reinsurance premiums, commissions and expense reimbursements are accounted for on a basis consistent with those used in accounting for the original policies issued and the term of the reinsurance contracts. Amounts recoverable from reinsurers for losses and loss adjustment expenses for which our insurance and reinsurance subsidiaries have not been relieved of their legal obligations to the policyholder are reported as assets.

Derivative Instruments

We enter into short-term, currency spot and forward contracts to mitigate foreign exchange rate exposure in our non-U.S. Dollar denominated fixed maturity investments. The forward contracts used are typically less than sixty days and are renewed as long as the non-U.S. Dollar denominated fixed maturity investments are held in our portfolio. Forward contracts are designated as hedges for accounting purposes. We also enter into foreign currency exchange forward contracts to manage currency exposure on losses related to global catastrophe events. These foreign currency forward contacts are carried at fair value in our Consolidated Balance Sheets in “Other investments.” The realized and unrealized gains and losses are included in “Net realized investment and other gains” in our Consolidated Statements of Income (Loss).

Through our subsidiary Argo Re, in 2011 we entered into two reinsurance contracts with a special purpose reinsurance company that provided us with protection against certain severe catastrophe events and the occurrence of multiple significant catastrophe events during the same year. The special purpose reinsurance company provided the reinsurance through two catastrophe bond transactions that were supported by two collateralized facilities. The reinsurance contracts were deemed to be derivatives. We recorded these contracts at fair value, and such fair value is included in “Other assets” in our Consolidated Balance Sheets with any changes in the value reflected in “Other reinsurance-related expenses” in our Consolidated Statements of Income (Loss). See Note 6, “Derivative Instruments” for related disclosures.

Supplemental Cash Flow Information

Income taxes paid. We paid income taxes of $14.2 million in 2013, $21.0 million in 2012 and $16.7 million in 2011.

Income taxes recovered. We recovered income taxes of $0.0 million in 2013, $10.0 million in 2012 and $0.2 million in 2011.

Interest paid. Interest paid for the years ended December 31, was as follows:

(in millions)	2013		2012		2011
Senior unsecured fixed rate notes	$	9.3	$	2.1	$	0.0
Junior subordinated debentures		7.9		21.3		18.3
Other indebtedness		2.6		3.1		3.5
Revolving credit facility		0.0		0.0		0.0
Total interest paid	$	19.8	$	26.5	$	21.8

Non-cash operating activities transaction. In our Consolidated Balance Sheet at December 31, 2012, “Reinsurance recoverables” and “Ceded reinsurance payable, net” each included $252.3 million from the whole account quota share reinsurance transaction (see Note 5, “Reserves for Losses and Loss Adjustment Expenses” for further discussion). As cash had not been settled in 2012 related to this transaction, $252.3 million has been excluded from both the change in “Receivables” and the change in “Ceded reinsurance payable and funds held” for the year ended December 31, 2012. During 2013, $52.7 million was received related to the “Reinsurance recoverable” and is reflected in “Receivables” and $154.2 million was paid related to the “Ceded reinsurance payable, net” and is reflected in “Ceded reinsurance payable and funds held” in our Consolidated Statements of Cash flows. Additionally, the “Reinsurance recoverable” was increased by $9.2 million for a change in the estimated loss which has not been settled in cash as of December 31, 2013 and is therefore excluded from “Receivables” in our Consolidated Statements of Cash Flows.

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Recently Issued Accounting Pronouncements

In December 2011, with further clarification issued in January 2013, the FASB issued an accounting update requiring disclosures about offsetting and related arrangements to enable users of financial statements to understand the effect of those arrangements on its financial position. Entities are required to disclose both gross information and net information about both instruments and transactions eligible for offset in the statement of financial position and instruments and transactions subject to an agreement similar to a master netting arrangement. This update is applicable to derivatives including bifurcated embedded derivatives, repurchase agreements and reverse repurchase agreements and securities borrowing and securities lending arrangements. The update is effective for annual reporting periods beginning on or after January 1, 2013, and interim periods within those annual periods. The disclosures required by this update should be provided retrospectively for all comparative periods presented. The adoption of this update did not have an impact on our financial results or disclosures.

In July 2012, the FASB issued an accounting update that allows an entity the option to first assess qualitative factors to determine whether it is more likely than not that an indefinite-lived intangible asset is impaired. The more-likely-than-not threshold is defined as having a likelihood of more than 50 percent. If the more-likely-than-not threshold is met, an entity is required to determine the fair value of the indefinite-lived intangible asset and perform the quantitative impairment test by comparing the fair value with the carrying amount in accordance with accounting guidance. The update was effective for annual and interim impairment tests performed for fiscal years beginning after September 15, 2012. Early adoption was permitted, including for annual and interim impairment tests performed as of a date before July 27, 2012, if an entity’s financial statements for the most recent annual or interim period have not yet been issued or, for nonpublic entities, have not yet been made available for issuance. The adoption of this update did not have an impact on our financial results and disclosures.

In February 2013, the FASB issued an accounting update to improve the reporting of reclassifications out of accumulated other comprehensive income. An entity is required to report the effect of significant reclassifications, by component, out of accumulated other comprehensive income on the respective line items in net income if the item is required under GAAP to be reclassified in its entirety in the same reporting period. The required disclosures of the update are allowed either in the Statement of Income (Loss) or in the notes. The amendments in the update are effective for reporting periods beginning after December 15, 2012. See Note 12, “Accumulated Other Comprehensive Income (Loss)” for the required disclosures.

In February 2013, the FASB issued amendments to “Liabilities” (Topic 405) in order to resolve diversity in practice related to accounting for the recognition, measurement and disclosure of obligations resulting from joint and several liability arrangements for which the total amount of the obligation is fixed at the reporting date. The amendments require an entity to measure the liability as the sum of (a) the amount the reporting entity agreed to pay on the basis of its arrangement among its co-obligors and (b) any additional amount the reporting entity expects to pay on behalf of its co-obligors. The amendments in this update are effective for fiscal years, and interim periods within those years, beginning after December 15, 2013, but early adoption is permitted. The amendments should be applied retrospectively to all prior periods presented for those obligations resulting from joint and several liability arrangements within the update’s scope that exist at the beginning of an entity’s fiscal year of adoption. We do not anticipate this update will have an impact on our financial results and disclosures.

In March 2013, the FASB issued an amendment to “Consolidation” (Topic 810) to resolve the diversity in practice related to the release of the cumulative translation adjustment into net income when a parent sells a part of all of its investment in a foreign entity or no longer holds a controlling financial interest in a subsidiary or group of assets that is a nonprofit activity or a business within a foreign entity. The amendments in the update are effective prospectively for fiscal years, and interim reporting periods within those years, beginning after December 15, 2013, but early adoption is permitted. The amendments should be applied prospectively to derecognition events occurring after the effective date with no adjustment to prior periods. We do not anticipate this update will have an impact on our financial results and disclosures.

In July 2013, the FASB issued amendments to “Income Taxes” (Topic 740) that will require the presentation of certain unrecognized tax benefits as reductions to deferred tax assets rather than liabilities in our Consolidated Balance Sheets when a net operating loss carryforward, similar tax loss or tax credit carryforward exists. The new standard requires adoption on a prospective basis in the first quarter of 2015; however, early adoption is permitted. We do not anticipate this update will have an impact on our financial results and disclosures.

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2. Investments

Composition of Invested Assets

The amortized cost, gross unrealized gains, gross unrealized losses and fair value of investments as of December 31 were as follows:

December 31, 2013			Gross		Gross
	Amortized		Unrealized		Unrealized		Fair
(in millions)	Cost		Gains		Losses		Value
Fixed maturities
USD denominated:
U.S. Governments	$	273.4	$	2.4	$	0.5	$	275.3
Non-U.S. Governments		60.9		0.3		1.0		60.2
Obligations of states and political subdivisions		563.7		22.9		8.8		577.8
Credit-Financial		426.3		15.4		1.8		439.9
Credit-Industrial		385.5		13.8		2.2		397.1
Credit-Utility		162.0		5.4		0.8		166.6
Structured securities:
CMO/MBS-agency (1)		219.4		9.2		1.7		226.9
CMO/MBS-non agency		19.4		0.8		0.0		20.2
CMBS (2)		162.7		3.1		1.0		164.8
ABS-residential (3)		6.8		0.3		0.5		6.6
ABS-non residential		116.8		0.5		0.1		117.2
Foreign denominated:
Governments		207.7		4.9		5.9		206.7
Credit		155.5		4.4		4.8		155.1
Total fixed maturities		2,760.1		83.4		29.1		2,814.4
Equity securities		346.9		188.6		1.2		534.3
Other investments		377.4		2.8		1.3		378.9
Short-term investments		351.6		0.0		0.0		351.6
Total investments	$	3,836.0	$	274.8	$	31.6	$	4,079.2

December 31, 2012			Gross		Gross
	Amortized		Unrealized		Unrealized		Fair
(in millions)	Cost		Gains		Losses		Value
Fixed maturities
USD denominated:
U.S. Governments	$	401.1	$	9.3	$	0.0	$	410.4
Non-U.S. Governments		53.1		3.6		0.1		56.6
Obligations of states and political subdivisions		551.7		44.9		0.5		596.1
Credit-Financial		382.4		25.7		0.7		407.4
Credit-Industrial		428.4		31.1		0.7		458.8
Credit-Utility		189.9		12.6		0.4		202.1
Structured securities:
CMO/MBS-agency (1)		375.1		20.2		0.2		395.1
CMO/MBS-non agency		12.5		1.0		0.2		13.3
CMBS (2)		109.5		5.7		0.2		115.0
ABS-residential (3)		10.1		0.2		0.8		9.5
ABS-non residential		81.3		1.2		0.0		82.5
Foreign denominated:
Governments		262.1		9.2		4.3		267.0
Credit		135.9		6.1		1.8		140.2
Total fixed maturities		2,993.1		170.8		9.9		3,154.0
Equity securities		373.5		153.0		5.1		521.4
Other investments		294.8		1.2		5.0		291.0
Short-term investments		234.3		0.1		0.1		234.3
Total investments	$	3,895.7	$	325.1	$	20.1	$	4,200.7

⁽¹⁾  Collateralized mortgage obligations/mortgage-backed securities (“CMO/MBS”).

⁽²⁾  Commercial mortgage-backed securities (“CMBS”).

⁽³⁾  Asset-backed securities (“ABS”).

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Included in “Total investments” in our Consolidated Balance Sheets at December 31, 2013 and 2012 is $87.3 million and $143.9 million, respectively, of assets managed on behalf of the trade capital providers, who are third party capital participants that provide underwriting capital to our Syndicate 1200 segment.

Contractual Maturity

The amortized cost and fair values of fixed maturity investments as of December 31, 2013, by contractual maturity, were as follows:

	Amortized		Fair
(in millions)	Cost		Value
Due in one year or less	$	223.7	$	225.5
Due after one year through five years		1,245.7		1,268.7
Due after five years through ten years		549.1		570.3
Thereafter		216.5		214.2
Structured securities		525.1		535.7
Total	$	2,760.1	$	2,814.4

The expected maturities may differ from the contractual maturities because debtors may have the right to call or prepay obligations.

Unrealized Losses and Other-than-temporary Impairments

An aging of unrealized losses on our investments in fixed maturities, equity securities, other investments and short-term investments as of December 31 is presented below:

December 31, 2013	Less Than One Year					One Year or Greater				Total
	Fair			Unrealized		Fair		Unrealized		Fair			Unrealized
(in millions)	Value			Losses		Value		Losses		Value			Losses
Fixed maturities
USD denominated:
U.S. Governments	$	55.3		$	0.5	$	0.0	$	0.0	$	55.3		$	0.5
Non-U.S. Governments		36.3			1.0		0.0		0.0		36.3			1.0
Obligations of states and political subdivisions (2)		154.6			8.8		3.1		0.0		157.7			8.8
Credit-Financial		88.7			1.7		2.4		0.1		91.1			1.8
Credit-Industrial		85.7			2.0		2.9		0.2		88.6			2.2
Credit-Utility		21.2			0.7		1.9		0.1		23.1			0.8
Structured securities:
CMO/MBS-agency		58.4			1.2		5.6		0.5		64.0			1.7
CMBS (2)		24.2			1.0		1.1		0.0		25.3			1.0
ABS-residential		0.0			0.0		3.6		0.5		3.6			0.5
ABS-non residential (2)		59.1			0.1		2.0		0.0		61.1			0.1
Foreign denominated:
Governments		170.5			5.9		0.0		0.0		170.5			5.9
Credit		125.3			4.8		0.0		0.0		125.3			4.8
Total fixed maturities		879.3			27.7		22.6		1.4		901.9			29.1
Equity securities		25.5			1.2		0.0		0.0		25.5			1.2
Other investments		(1.4	)		1.3		0.0		0.0		(1.4	)		1.3
Short-term investments (1)		4.5			0.0		0.0		0.0		4.5			0.0
Total		$907.9			$30.2		$22.6		$1.4		$930.5			$31.6

⁽¹⁾  Unrealized losses less than one year are less than $0.1 million.

⁽²⁾  Unrealized losses one year or greater are less than $0.1 million

F-17

December 31, 2012	Less Than One Year				One Year or Greater				Total
	Fair		Unrealized		Fair		Unrealized		Fair		Unrealized
(in millions)	Value		Losses		Value		Losses		Value		Losses
Fixed maturities
USD denominated:
U.S. Governments (1)	$	11.9	$	0.0	$	0.0	$	0.0	$	11.9	$	0.0
Non-U.S. Governments (2)		8.5		0.1		0.5		0.0		9.0		0.1
Obligations of states and political subdivisions		28.2		0.3		0.8		0.2		29.0		0.5
Credit-Financial		25.0		0.2		8.6		0.5		33.6		0.7
Credit-Industrial		32.2		0.4		3.0		0.3		35.2		0.7
Credit-Utility		8.4		0.2		0.8		0.2		9.2		0.4
Structured securities:
CMO/MBS-agency (2)		26.4		0.2		0.3		0.0		26.7		0.2
CMO/MBS-non agency		1.7		0.2		0.0		0.0		1.7		0.2
CMBS (1)		5.7		0.0		3.5		0.2		9.2		0.2
ABS-residential		0.0		0.0		3.9		0.8		3.9		0.8
ABS-non residential (1) (2)		13.7		0.0		0.2		0.0		13.9		0.0
Foreign denominated:
Governments (2)		180.5		4.3		0.3		0.0		180.8		4.3
Credit		76.3		1.8		0.0		0.0		76.3		1.8
Total fixed maturities		418.5		7.7		21.9		2.2		440.4		9.9
Equity securities		60.2		4.2		6.3		0.9		66.5		5.1
Other investments		11.6		5.0		0.0		0.0		11.6		5.0
Short-term investments		0.0		0.1		0.0		0.0		0.0		0.1
Total	$	490.3	$	17.0	$	28.2	$	3.1	$	518.5	$	20.1

⁽¹⁾  Unrealized losses less than one year are less than $0.1 million.

⁽²⁾  Unrealized losses one year or greater are less than $0.1 million.

We hold a total of 5,809 securities, of which 1,326 were in an unrealized loss position for less than one year and 49 were in an unrealized loss position for a period one year or greater as of December 31, 2013. Unrealized losses greater than twelve months on fixed maturities were the result of a number of factors, including increased credit spreads, foreign currency fluctuations and higher market yields relative to the date the securities were purchased, and for structured securities, by the performance of the underlying collateral as well. We also considered that we do not intend to sell the investments and it is unlikely that we will be required to sell the investments before recovery of their amortized cost basis, which may be maturity. We do not consider these investments to be other-than-temporarily impaired at December 31, 2013.

We regularly evaluate our investments for other than temporary impairment. For fixed maturity securities, the evaluation for a credit loss is generally based on the present value of expected cash flows of the security as compared to the amortized book value. For structured securities, frequency and severity of loss inputs are used in projecting future cash flows of the securities. Loss frequency is measured as the credit default rate, which includes such factors as loan-to-value ratios and credit scores of borrowers. Loss severity includes such factors as trends in real estate values and proceeds at foreclosure. We also recognize other-than-temporary losses on fixed maturity securities that we intend to sell. We recognized other-than-temporary losses on our fixed maturities portfolio of $6.0 million, $1.5 million and $0.1 million for 2013, 2012 and 2011, respectively. For equity securities and other investments, the length of time and the amount of decline in fair value are the principal factors in determining other-than-temporary impairment. We recognized other-than-temporary losses on our equity portfolio of $1.8 million, $2.2 million and $1.1 million for 2013, 2012 and 2011, respectively. In situations where we did not recognize other-than-temporary losses on investments in our equity portfolio, we have evaluated the near-term prospects of the investment in relation to the severity and duration of the impairment and based on that evaluation, have the ability and intent to hold these investments until a recovery of the cost basis.

F-18

Net Investment Income and Realized Gains and Losses

Investment income and expenses for the years ended December 31 were as follows:

(in millions)	2013			2012			2011
Investment income:
Interest and dividends on fixed maturities	$	87.7		$	105.9		$	121.4
Dividends on equity securities		17.7			15.2			9.6
Interest on short-term and other investments		5.0			7.3			4.7
Other		(1.0	)		(0.4	)		(0.5	)
		109.4			128.0			135.2
Investment expenses		(9.4	)		(9.2	)		(9.4	)
Net investment income	$	100.0		$	118.8		$	125.8

The following table presents our gross realized investment and other gains (losses) for the years ended December 31:

(in millions)	2013			2012			2011
Realized gains
Fixed maturities	$	33.5		$	27.2		$	30.5
Equity securities		59.1			0.4			26.6
Other investments		38.9			21.5			16.1
Short-term investments		0.1			0.5			1.0
Gain on sale of affiliate		0.0			4.8			0.0
Gross realized investment and other gains		131.6			54.4			74.2
Realized losses
Fixed maturities		(19.6	)		(9.1	)		(11.6	)
Equity securities		(1.4	)		(0.5	)		(0.7	)
Other investments		(30.8	)		(15.1	)		(10.5	)
Short-term investments		(0.7	)		(0.3	)		(1.0	)
Other-than-temporary impairment losses on fixed maturities		(6.0	)		(1.5	)		(0.1	)
Other-than-temporary impairment losses on equity securities		(1.8	)		(2.2	)		(1.1	)
Gross realized investment and other losses		(60.3)			(28.7)			(25.0)
Net realized investment and other gains		$71.3			$25.7			$49.2

We enter into short-term, currency spot and forward contracts to mitigate foreign exchange rate exposure for certain non-U.S. Dollar denominated fixed maturity investments. The forward contracts used are typically less than sixty days and are renewed as long as the non-U.S. Dollar denominated fixed maturity investments are held in our portfolio. These forward contracts are designated as fair value hedges for accounting purposes.

As of December 31, 2013, 2012 and 2011, we hedged $0.1 million, $2.3 million and $3.1 million, respectively, of certain holdings in non-U.S. Dollar denominated fixed maturity investments with $0.1 million, $2.2 million and $3.3 million, respectively, of foreign exchange contracts. The net realized effect on income was not significant for the reporting periods.

We also enter into foreign currency exchange forward contracts to manage currency exposure on losses related to global catastrophe events. These currency forwards contacts are carried at fair value in our Consolidated Balance Sheets in “Other investments.” The realized and unrealized gains and losses are included in “Net realized investment and other gains” in our Consolidated Statements of Income (Loss). The notional amount of the currency forward contracts was $57.2 million, $102.8 million and $142.4 million as of December 31, 2013, 2012 and 2011, respectively. The fair value of the currency forward contracts was a loss of $1.3 million, $1.9 million and $0.1 million as of December 31, 2013, 2012 and 2011, respectively. For the years ended December 31, 2013, 2012 and 2011, we recognized $7.8 million, $8.0 million and $9.4 million in realized gains and $10.4 million, $7.5 million and $4.8 million in realized losses, respectively, from the currency forward contracts.

F-19

Regulatory Deposits, Pledged Securities and Letters of Credit

At December 31, 2013, the amortized cost and fair value of investments on deposit with U.S. and various regulatory agencies for regulatory purposes were $196.7 million and $203.4 million, respectively. At December 31, 2012, the amortized cost and fair value of investments on deposit with U.S. and various regulatory agencies for regulatory purposes were $210.3 million and $227.2 million, respectively.

Investments with an amortized cost of $97.7 million and fair value of $98.6 million were pledged as collateral in support of all irrevocable letters of credit at December 31, 2013, respectively, primarily in support of irrevocable letters of credit in the amount of $60.2 million issued under the terms of certain reinsurance agreements in respect of reported loss and loss expense reserves at December 31, 2013.

Investments with an amortized cost of $218.5 million and fair value of $221.5 million were pledged as collateral in support of irrevocable letters of credit at December 31, 2012. These assets support irrevocable letters of credit issued under the terms of certain reinsurance agreements in respect of reported loss and loss expense reserves in the amount of $64.0 million and $124.9 million for our Corporate member’s capital as security to support the underwriting business at Lloyd’s.

At December 31, our Corporate member’s capital supporting our Lloyd’s business consisted of the following:

(in millions)	2013		2012
Fixed maturities, at fair value	$	250.7	$	200.3
Short-term investments, at fair value		0.1		3.6
Letters of credit		0.0		124.9
Total securities and letters of credit pledged to Lloyd’s	$	250.8	$	328.8

Fair Value Measurements

Fair value is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. Fair value measurement assumes that the transaction to sell the asset or transfer the liability occurs in the principal market for the asset or liability, or in the absence of a principal market, the most advantageous market. Market participants are buyers and sellers in the principal (or most advantageous) market that are independent, knowledgeable, able to transact for the asset or liability and willing to transfer the asset or liability.

Valuation techniques consistent with the market approach, income approach and/or cost approach are used to measure fair value. The inputs of these valuation techniques are categorized into three levels.

• Level 1 inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities that can be accessed at the reporting date. We define actively traded as a security that has traded in the past seven days. We receive one quote per instrument for Level 1 inputs.

• Level 2 inputs are inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly. We receive one quote per instrument for Level 2 inputs.

• Level 3 inputs are unobservable inputs. Unobservable inputs reflect our own assumptions about the assumptions market participants would use in pricing the asset or liability based on the best information available in the circumstances.

We receive fair value prices from third-party pricing services and our outside investment managers. These prices are determined using observable market information such as dealer quotes, market spreads, cash flows, yield curves, live trading levels, trade execution data, market consensus prepayment speeds, credit information and the security’s terms and conditions, among other things. We have reviewed the processes used by the third-party providers for pricing the securities, and have determined that these processes result in fair values consistent with GAAP requirements. In addition, we review these prices for reasonableness, and have not adjusted any prices received from the third-party providers as of December 31, 2013. A description of the valuation techniques we use to measure assets at fair value is as follows:

F-20

Fixed Maturities (Available-for-Sale) Levels 1 and 2:

• United States Treasury securities are typically valued using Level 1 inputs. For these securities, we obtain fair value measurements from third-party pricing services using quoted prices (unadjusted) in active markets at the reporting date.

• United States Government agencies, non-U.S. Government securities, obligations of states and political subdivisions, credit securities and foreign denominated securities are reported at fair value using Level 2 inputs. For these securities, we obtain fair value measurements from third-party pricing services. Observable data may include dealer quotes, market spreads, yield curves, live trading levels, trade execution data, credit information and the security’s terms and conditions, among other things.

• CMO/MBS agency, CMO/MBS non-agency, CMBS, ABS residential and ABS non-residential securities are reported at fair value using Level 2 inputs. For these securities, we obtain fair value measurements from third-party pricing services. Observable data may include dealer quotes, market spreads, cash flows, yield curves, live trading levels, trade execution data, market consensus prepayment speeds, credit information and the security’s terms and conditions, among other things.

Fixed Maturities (Available-for-Sale) Level 3:

• Corporate securities reported at fair value using Level 3 inputs in 2012 were infrequently traded securities valued by an independent investment manager using unobservable inputs. These securities were sold in 2012.

Equity Securities Level 1: Equity securities are principally reported at fair value using Level 1 inputs. For these securities, we obtain fair value measurements from a third party pricing service using quoted prices (unadjusted) in active markets at the reporting date.

Equity Securities Level 2: We own interests in mutual funds that are reported at fair value using Level 2 inputs. The valuations are based on the funds’ net asset value per share, determined weekly or at the end of each month. The underlying assets in the funds are valued primarily on the basis of closing market quotations or official closing prices on each valuation day.

Equity Securities Level 3: We own certain equity securities that are reported at fair value using Level 3 inputs. The valuation techniques for these securities include the following:

• Fair value measurements are obtained from the National Association of Insurance Commissioners’ Security Valuation Office at the reporting date.

• Fair value measurements for an investment in an equity fund obtained by applying final prices provided by the administrator of the fund, which is based upon certain estimates and assumptions.

Other Investments Level 2: Foreign regulatory deposits are assets held in trust in jurisdictions where there is a legal and regulatory requirement to maintain funds locally in order to protect policyholders. Lloyd’s is the appointed investment manager for the funds. These assets are invested in short term government securities, agency securities and corporate bonds and are valued using Level 2 inputs based upon values obtained from Lloyd’s. Foreign currency future contracts are valued by our counterparty using market driven foreign currency exchange rates and are considered Level 2 investments.

Short-term Investments: Short-term investments are principally reported at fair value using Level 1 inputs, with the exception of short-term corporate bonds reported at fair value using Level 2 inputs as described in the fixed maturities section above. Values for the investments categorized as Level 1 are obtained from various financial institutions as of the reporting date.

Other Assets Level 3: We have one reinsurance contract deemed a derivative in 2013 and two reinsurance contracts deemed derivatives in 2012. The fair values were estimated by management taking into account changes in the market for catastrophe bond reinsurance contracts with similar economic characteristics and potential recoveries from events preceding the valuation date. See Note 6 “Derivative Instruments” for related disclosures.

Transfers Between Level 1 and Level 2 Securities: There were no transfers between Level 1 and Level 2 securities during 2013 or 2012.

F-21

Based on an analysis of the inputs, our financial assets measured at fair value on a recurring basis at December 31, 2013 and 2012 have been categorized as follows:

			Fair Value Measurements at Reporting Date Using
(in millions)	December 31, 2013		Level 1 (a)		Level 2 (b)		Level 3  (c)
Fixed maturities
USD denominated:
U.S. Governments	$	275.3	$	143.8	$	131.5	$	0.0
Non-U.S. Governments		60.2		0.0		60.2		0.0
Obligations of states and political subdivisions		577.8		0.0		577.8		0.0
Credit-Financial		439.9		0.0		439.9		0.0
Credit-Industrial		397.1		0.0		397.1		0.0
Credit-Utility		166.6		0.0		166.6		0.0
Structured securities:
CMO/MBS-agency		226.9		0.0		226.9		0.0
CMO/MBS-non agency		20.2		0.0		20.2		0.0
CMBS		164.8		0.0		164.8		0.0
ABS-residential		6.6		0.0		6.6		0.0
ABS-non residential		117.2		0.0		117.2		0.0
Foreign denominated:
Governments		206.7		0.0		206.7		0.0
Credit		155.1		0.0		155.1		0.0
Total fixed maturities		2,814.4		143.8		2,670.6		0.0
Equity securities		534.3		476.7		56.3		1.3
Other investments		117.8		0.0		117.8		0.0
Short-term investments		351.6		347.0		4.6		0.0
Other assets		2.6		0.0		0.0		2.6
	$	3,820.7	$	967.5	$	2,849.3	$	3.9

^(a)  Quoted prices in active markets for identical assets

^(b)  Significant other observable inputs

^(c)  Significant unobservable inputs

F-22

			Fair Value Measurements at Reporting Date Using
(in millions)	December 31, 2012		Level 1  (a)		Level 2  (b)		Level 3  (c)
Fixed maturities
USD denominated:
U.S. Governments	$	410.4	$	219.5	$	190.9	$	0.0
Non-U.S. Governments		56.6		0.0		56.6		0.0
Obligations of states and political subdivisions		596.1		0.0		596.1		0.0
Credit-Financial		407.4		0.0		407.4		0.0
Credit-Industrial		458.8		0.0		458.8		0.0
Credit-Utility		202.1		0.0		202.1		0.0
Structured securities:
CMO/MBS-agency		395.1		0.0		395.1		0.0
CMO/MBS-non agency		13.3		0.0		13.3		0.0
CMBS		115.0		0.0		115.0		0.0
ABS-residential		9.5		0.0		9.5		0.0
ABS-non residential		82.5		0.0		82.5		0.0
Foreign denominated:
Governments		267.0		0.0		267.0		0.0
Credit		140.2		0.0		140.2		0.0
Total fixed maturities		3,154.0		219.5		2,934.5		0.0
Equity securities		521.4		469.0		50.6		1.8
Other investments		132.0		0.0		132.0		0.0
Short-term investments		234.3		201.1		33.2		0.0
Other assets		6.9		0.0		0.0		6.9
	$	4,048.6	$	889.6	$	3,150.3	$	8.7

^(a)  Quoted prices in active markets for identical assets

^(b)  Significant other observable inputs

^(c)  Significant unobservable inputs

The fair value measurements in the tables above do not agree to “Total investments” on our Consolidated Balance Sheets as they exclude certain other investments that are accounted for under the equity-method of accounting and include reinsurance contracts that are classified as “Other assets”.

A reconciliation of the beginning and ending balances for the investments categorized as Level 3 at December 31, 2013 and 2012 are as follows:

(in millions)	Equity Securities			Other Assets			Total
Beginning balance, January 1, 2013	$	1.8		$	6.9		$	8.7
Transfers into Level 3		0.0			0.0			0.0
Transfers out of Level 3		0.0			0.0			0.0
Total gains or losses (realized/unrealized):
Included in net income (loss)		0.1			0.0			0.1
Included in other comprehensive income (loss)		0.0			0.0			0.0
Purchases, issuances, sales, and settlements
Purchases		0.0			0.0			0.0
Issuances		0.0			0.0			0.0
Sales		(0.6	)		0.0			(0.6	)
Settlements		0.0			(4.3	)		(4.3	)
Ending balance, December 31, 2013	$	1.3		$	2.6		$	3.9
Amount of total gains or losses for the year included in net income (loss) attributable to the change in unrealized gains or losses relating to assets still held at December 31, 2013	$	0.0		$	0.0		$	0.0

F-23

Fair Value Measurements Using Unobservable Inputs (Level 3)

(in millions)	Credit Financial			Equity Securities			Other Assets			Total
Beginning balance, January 1, 2012	$	0.7		$	2.4		$	9.0		$	12.1
Transfers into Level 3		0.0			0.0			0.0			0.0
Transfers out of Level 3		0.0			0.0			0.0			0.0
Total gains or losses (realized/unrealized):
Included in net income (loss)		0.1			0.0			0.0			0.1
Included in other comprehensive income (loss)		0.0			0.0			0.0			0.0
Purchases, issuances, sales, and settlements
Purchases		0.0			0.0			0.0			0.0
Issuances		0.0			0.0			0.0			0.0
Sales		(0.8	)		(0.6	)		0.0			(1.4	)
Settlements		0.0			0.0			(2.1	)		(2.1	)
Ending balance, December 31, 2012	$	0.0		$	1.8		$	6.9		$	8.7
Amount of total gains or losses for the year included in net income (loss) attributable to the change in unrealized gains or losses relating to assets still held at December 31, 2012	$	0.0		$	0.0		$	0.0		$	0.0

At December 31, 2013 and 2012, we did not have any financial assets or financial liabilities measured at fair value on a nonrecurring basis.

3. Reinsurance

We reinsure certain risks with other insurance companies. Such arrangements serve to limit our maximum loss on catastrophes and large or unusually hazardous risks. We are liable for reinsurance ceded in the event our reinsurers do not meet their obligations. Thus, a credit exposure exists with respect to reinsurance ceded to the extent that any reinsurer is unable or unwilling to meet the obligations assumed under the reinsurance contracts. Our allowance for uncollectible reinsurance balances receivable on paid losses and incurred claims was $3.7 million and $4.4 million as of December 31, 2013 and 2012, respectively. Under certain reinsurance agreements, collateral, including letters of credit, (“collateral”) is held to secure performance of reinsurers in meeting their obligations. The amount of such collateral was $335.5 million and $262.6 million at December 31, 2013 and 2012, respectively. The collateral we hold does not apply to our entire outstanding reinsurance recoverable. Rather, collateral is provided on an individual contract basis as appropriate. For each individual reinsurer, the collateral held may exceed or fall below the total outstanding recoverable from that individual reinsurer.

The long-term nature of the reinsurance contracts creates a credit risk to us over time arising from potentially uncollectible reinsurance. To mitigate that counterparty risk, we evaluate our reinsurers to assess their financial condition. The factors that underlie these reviews include a financial risk assessment as well as an internal assessment of the capitalization and the operational risk of the reinsurer. As a result of these reviews, we may make changes to the approved markets that are used in both our treaty and facultative reinsurance programs.

Estimated losses recoverable from reinsurers and the ceded portion of unearned premiums are reported as assets in our Consolidated Balance Sheets. Included in reinsurance recoverables are paid loss recoverables of $140.8 million and $208.3 million as of December 31, 2013 and 2012, respectively. Premiums earned and losses and loss adjustment expenses are reported net of reinsurance in our Consolidated Statements of Income (Loss).

Losses and loss adjustment expenses of $742.0 million, $747.6 million and $863.1 million for the years ended December 31, 2013, 2012 and 2011, respectively, are net of amounts ceded to reinsurers of $292.8 million, $223.6 million and $290.0 million, respectively.

We are required to accept certain assigned risks and other legally mandated reinsurance obligations. Prior to the mid-1980s, we assumed various forms of casualty reinsurance for which we continue to maintain reserves for losses and loss adjustment expenses (see Note 17, “Run-off Lines”). For such assumed reinsurance transactions, we engage in various monitoring steps that are common with assumed reinsurance such as ongoing claims reviews. We currently assume property related reinsurance primarily through our subsidiary, Argo Re (see Note 16, “Segment Information”).

F-24

Premiums for the years ended December 31 were as follows:

(in millions)	2013			2012			2011
Direct written premiums	$	1,576.1		$	1,428.6		$	1,261.3
Reinsurance ceded to other companies		(537.1	)		(501.2	)		(473.0	)
Reinsurance assumed from other companies		312.3			317.1			283.5
Net written premiums	$	1,351.3		$	1,244.5		$	1,071.8
Direct earned premiums	$	1,541.0		$	1,372.2		$	1,267.6
Reinsurance ceded to other companies		(533.7	)		(487.0	)		(457.5	)
Reinsurance assumed from other companies		296.5			301.3			271.9
Net earned premiums	$	1,303.8		$	1,186.5		$	1,082.0
Percentage of reinsurance assumed to net earned premiums		22.7	%		25.4	%		25.1	%

4. Income Taxes

We are incorporated under the laws of Bermuda and, under current Bermuda law, are not obligated to pay any taxes in Bermuda based upon income or capital gains. We have received an undertaking from the Supervisor of Insurance in Bermuda pursuant to the provisions of the Exempted Undertakings Tax Protection Act, 2011, which exempts us from any Bermuda taxes computed on profits, income or any capital asset, gain or appreciation or any tax in the nature of estate duty or inheritance tax, at least until the year 2035.

We do not consider ourselves to be engaged in a trade or business in the United States or the United Kingdom and, accordingly, do not expect to be subject to direct United States or United Kingdom income taxation.

We have subsidiaries based in the United Kingdom that are subject to the tax laws of that country. Under current law, these subsidiaries are taxed at the applicable corporate tax rates. Six of the United Kingdom subsidiaries are deemed to be engaged in business in the United States, and therefore, are subject to United States corporate tax in respect of a proportion of their United States underwriting business only. Relief is available against the United Kingdom tax liabilities in respect of overseas taxes paid that arise from the underwriting business. Corporate income tax losses incurred in the United Kingdom can be carried forward, for application against future income, indefinitely. Our United Kingdom subsidiaries file separate United Kingdom income tax returns.

We have subsidiaries based in the United States that are subject to United States tax laws. Under current law, these subsidiaries are taxed at the applicable corporate tax rates. Our United States subsidiaries file a consolidated United States federal income tax return.

We also have operations in Belgium, Switzerland, Brazil, France, Malta, Spain and Ireland, which also are subject to income taxes imposed by the jurisdiction in which they operate. We have operations in the United Arab Emirates, which are not subject to income tax under the laws of that country.

Our income tax provision includes the following components for the years ended December 31:

(in millions)	2013		2012		2011
Current tax provision	$	32.7	$	9.4	$	9.8
Deferred tax provision related to:
Future tax deductions		0.1		2.9		9.4
Valuation allowance change		3.7		2.1		0.8
Income tax provision	$	36.5	$	14.4	$	20.0

F-25

Our expected income tax provision computed on pre-tax income (loss) at the weighted average tax rate has been calculated as the sum of the pre-tax income (loss) in each jurisdiction multiplied by that jurisdiction’s applicable statutory tax rate. For the years ended December 31, 2013, 2012 and 2011, pre-tax income (loss) attributable to our operations and the operations’ effective tax rates were as follows:

	2013						2012						2011
	Pre-Tax			Effective Tax			Pre-Tax			Effective Tax			Pre-Tax			Effective Tax
(in millions)	Income (Loss)			Rate			Income (Loss)			Rate			Income (Loss)			Rate
Bermuda	$	50.5			0.0	%	$	10.0			0.0	%	$	(129.8	)		0.0	%
United States		120.9			28.2	%		52.0			21.3	%		99.6			28.4	%
United Kingdom		18.5			12.0	%		14.0			24.4	%		(27.3	)		29.5	%
Belgium		0.2			103.0	%		(0.1	)		98.4	%		0.3			20.7	%
Brazil		(9.7	)		0.0	%		(6.5	)		0.0	%		(4.1	)		0.0	%
Dubai		1.1			0.0	%		0.0	(1)		0.0	%		0.1			0.0	%
Ireland		(0.1	)		0.0	%		(0.2	)		0.0	%		(0.3	)		0.0	%
Malta		(1.7	)		0.0	%		(2.6	)		0.0	%		(0.4	)		0.0	%
Switzerland		0.0	(1)		5.6	%		0.1			22.8	%		0.0	(1)		37.3	%
Pre-tax income (loss)	$	179.7					$	66.7					$	(61.9	)

⁽¹⁾  Pre-tax income for the respective year was less than $0.1 million.

A reconciliation of the difference between the provision for income taxes and the expected tax provision at the weighted average tax rate is as follows:

(in millions)	2013			2012			2011
Income tax provision at expected rate	$	43.1		$	18.5		$	26.0
Tax effect of:
Tax-exempt interest		(5.6	)		(5.6	)		(5.8	)
Dividends received deduction		(2.3	)		(2.2	)		(1.6	)
Valuation allowance change		3.7			2.1			0.8
Other permanent adjustments, net		0.3			1.8			0.3
Adjustment for prior year tax return		(1.6	)		0.2			1.6
United States state tax benefit		0.3			(0.3	)		(0.3	)
Other foreign adjustments		(0.1	)		0.0			0.1
Prior year foreign taxes		1.1			0.0			(0.6	)
Rate adjustment on loss carrybacks		0.0			0.0			(0.4	)
Deferred tax rate reduction		(1.2	)		(0.6	)		(0.4	)
Foreign exchange adjustments		(1.7	)		0.5			0.3
Foreign withholding taxes		0.5			0.0			0.0
Income tax provision	$	36.5		$	14.4		$	20.0
Income tax provision (benefit)—Foreign	$	2.4		$	3.3		$	(8.0	)
Income tax provision—United States Federal		33.2			11.5			28.5
Income tax (benefit) provision—United States State		0.4			(0.4	)		(0.5	)
Foreign withholding tax—United States		0.5			0.0			0.0
Income tax provision	$	36.5		$	14.4		$	20.0

The consolidated provision for income taxes for the year ended December 31, 2013 was affected by a $1.6 million decrease for additional taxes reported on the prior year tax return, a $1.2 million reduction for change in deferred tax rate and a $1.7 million decrease for the foreign exchange adjustment on the translation from Sterling to the U.S. Dollar within Argo International.

F-26

The consolidated provision for income taxes for the year ended December 31, 2012 was affected by a $0.2 million increase for additional taxes reported on the prior year tax return, $0.6 million reduction for the change in the United Kingdom deferred tax rate and $0.5 million increase for the foreign exchange adjustment on the translation from Sterling to the U.S. Dollar within Argo International.

The consolidated provision for income taxes for the year ended December 31, 2011 was affected by a $1.6 million increase for additional taxes reported on the prior year tax return, a $0.6 million reduction for prior year foreign taxes recovered and a $0.3 million increase for the foreign exchange adjustment on the translation from Sterling to the U.S. Dollar within Argo International.

We recognize potential accrued interest and penalties within our global operations in “Interest expense” and “Underwriting, acquisition and insurance expenses,” respectively, in our Consolidated Statements of Income (Loss).

Deferred taxes arise from temporary differences in the recognition of revenues and expenses for tax and financial reporting purposes. The net deferred tax liability as of December 31, 2013 and 2012 resulted from the tax-effected temporary differences shown in the following table. Due primarily to changes in unrealized gains on available-for-sale investment securities, the net deferred tax liability decreased by $15.1 million and increased by $25.3 million and $16.1 million for the years ended December 31, 2013, 2012 and 2011, respectively.

(in millions)	2013			2012
Deferred tax assets:
Unrealized losses on fixed maturities and other investment securities	$	0.0		$	0.4
Losses and loss adjustment expense reserve discounting		28.4			33.1
Unearned premiums		23.0			23.3
Capital loss carryforward		29.8			30.7
Allowance for bad debt		1.9			1.3
Accrual for contingent commissions		0.4			0.6
Net operating loss carryforward		19.8			19.8
Impairment of investment values		10.6			9.7
United States amortization of intangible assets		3.1			3.3
Accrued bonus		5.7			3.1
Accrued vacation		1.6			2.1
Stock option expense		6.4			4.4
United Kingdom interest		0.8			0.9
Brazil operating losses		8.0			3.9
Malta operating losses		1.7			1.0
Other		7.0			5.2
Deferred tax assets, gross		148.2			142.8
Deferred tax liabilities:
Unrealized gains on equity securities		(65.1	)		(51.2	)
Unrealized gains on fixed maturities and other investment securities		(16.1	)		(47.5	)
Deferred acquisition costs		(19.5	)		(19.1	)
United States amortization of intangible assets		(3.3	)		(3.2	)
United Kingdom underwriting losses		(4.8	)		(3.8	)
United Kingdom amortization of intangible assets		(2.8	)		(3.8	)
Brussels pension		(0.2	)		(0.2	)
United States state tax		0.0			(0.3	)
Other		(8.9	)		(5.0	)
Deferred tax liabilities, gross		(120.7	)		(134.1	)
Deferred tax assets, net before valuation allowance		27.5			8.7
Valuation allowance		(56.2	)		(52.5	)
Deferred tax liabilities, net	$	(28.7	)	$	(43.8	)
Net deferred tax liabilities—Foreign	$	(7.0	)	$	(7.0	)
Net deferred tax liabilities—United States		(21.7	)		(36.8	)
Deferred tax liabilities, net	$	(28.7	)	$	(43.8	)

F-27

Our net deferred tax assets (liabilities) are supported by taxes paid in previous periods, reversal of taxable temporary differences and recognition of future income. Management regularly evaluates the recoverability of the deferred tax assets and makes any necessary adjustments to them based upon any changes in management’s expectations of future taxable income. Realization of deferred tax assets is dependent upon our generation of sufficient taxable income in the future to recover tax benefits that cannot be recovered from taxes paid in the carryback period, which is generally two years for net operating losses and three years for capital losses for our United States operations. At December 31, 2013, we had a total net deferred tax asset of $27.5 million prior to any valuation allowance. Management has concluded that a valuation allowance is required for a portion of the tax effected net capital loss carryforward of $29.8 million generated from the sale of PXRE Reinsurance Company, and a full valuation allowance is required for the tax effected net operating loss carryforward of $18.8 million from PXRE Corporation and for the tax effected net operating loss carryforward of $1.0 million from ARIS. The capital loss carryforward generated from the sale of PXRE Reinsurance Company expired on December 31, 2013. Of the PXRE Corporation loss carryforwards, $17.2 million will expire if not used by December 31, 2025 and $1.5 million will expire if not used by December 31, 2027. Of the ARIS loss carryforward, $0.2 million will expire if not used by December 31, 2027, $0.4 million will expire if not used by December 31, 2028 and $0.4 million will expire if not used by December 31, 2029. The valuation allowances have been established as Internal Revenue Code Section 382 limits the application of net operating loss and net capital loss carryforwards following an ownership change. The loss carryforwards available per year are $2.8 million as required by Internal Revenue Code Section 382. Further, due to cumulative losses since inception, management has concluded that a valuation allowance is required for the full amount of the tax effected net operating losses generated by our Brazil and Malta entities. Accordingly, a valuation allowance of $56.2 million is required as of December 31, 2013 of which $46.5 million relates to the PXRE Reinsurance Company and ARIS loss carryforwards, $8.0 million relates to Brazil operations, and $1.7 million relates to Malta operations. During the year ended December 31, 2013, the valuation allowance was reduced by $1.0 million pertaining to the use of the PXRE Reinsurance Company and ARIS loss carryforwards, increased by $0.6 million pertaining to the Malta operations and increased by $4.1 million pertaining to the Brazil operations.

We had no material unrecognized tax benefits as of December 31, 2013, 2012 and 2011. Our United States subsidiaries are no longer subject to U.S. federal and state income tax examinations by tax authorities for years before 2010. Our United Kingdom subsidiaries are no longer subject to United Kingdom income tax examinations by Her Majesty’s Revenue and Customs for years before 2011.

F-28

5. Reserves for Losses and Loss Adjustment Expenses

The following table provides a reconciliation of reserves for losses and loss adjustment expenses (“LAE”) for the years ended December 31, 2013, 2012 and 2011, respectively.

(in millions)	2013			2012			2011
Net reserves beginning of the year	$	2,110.9		$	2,336.7		$	2,253.0
Add:
Net reserves from assumed retroactive insurance contract (1)		0.0			13.0			0.0
Losses and LAE incurred during current calendar year, net of reinsurance:
Current accident year		775.6			780.5			866.5
Prior accident years		(33.6	)		(32.9	)		(3.4	)
Losses and LAE incurred during calendar year, net of reinsurance		742.0			747.6			863.1
Deduct:
Net reserves ceded—whole account quota share reinsurance transaction (2)		0.0			192.2			0.0
Losses and LAE payments made during current calendar year, net of reinsurance:
Current accident year		199.3			217.7			234.7
Prior accident years		554.2			578.8			577.9
Losses and LAE payments made during current calendar year, net of reinsurance:		753.5			796.5			812.6
Change in participation interest (3)		10.4			(3.1	)		31.2
Foreign exchange adjustments		(2.2	)		5.4			2.0
Net reserves—end of year		2,107.6			2,110.9			2,336.7
Add:
Reinsurance recoverables on unpaid losses and LAE, end of year		1,122.7			1,112.6			954.4
Gross reserves—end of year	$	3,230.3		$	3,223.5		$	3,291.1

⁽¹⁾  Amount represents reserves assumed resulting from participation in Brazilian Motor Third-Party Liability Insurance Pool effective January 1, 2012.

⁽²⁾  Amount represents reserves ceded resulting from a whole account quota share reinsurance transaction of 2009 and prior year of account reserves of the syndicate effective December 2012.

⁽³⁾  Amount represents (decrease) increase in reserves due to change in syndicate participation.

On December 31, 2012, Syndicate 1200 entered into a retroactive whole account quota share contract covering the 2009 and prior years of account. The counterparty was another syndicate within the Lloyd’s market. As a result of this transaction, reserves for losses and LAE at December 31, 2012 were net of $192.2 million ceded under this quota share agreement. On December 17, 2013 the Prudential Regulatory Authority approved a Split Reinsurance to Close arrangement whereby the liabilities assumed by the whole account quota share provider could be legally transferred to that quota share provider. On January 18, 2014 this transaction was effected with an inception date of January 1, 2014. Additionally, included in reinsurance recoverables on unpaid losses and LAE at December 31, 2012 was $60.1 million in recoverables due the trade capital providers as a result of this quota share agreement.

Reserves for losses and loss adjustment expenses represent the estimated indemnity cost and related adjustment expenses necessary to investigate and settle claims. Such estimates are based upon individual case estimates for reported claims, estimates from ceding companies for reinsurance assumed and actuarial estimates for losses that have been incurred but not yet reported to the insurer. Any change in probable ultimate liabilities is reflected in current operating results.

Net favorable loss development recognized in 2013 for prior accident years was a $33.6 million reduction to losses and LAE. The Excess and Surplus Lines segment had net favorable loss development of $43.9 million primarily due to $55.8 million of favorable development in the general and products liability lines of business, partially offset by $11.9 million of unfavorable development in commercial automobile losses. The Commercial Specialty segment had net unfavorable loss development of $1.1 million primarily attributable to $16.2 million of unfavorable development in general liability due to increases in claim severity and $2.0 million of unfavorable development in automobile liability, partially offset by favorable development of $9.5 million in

F-29

workers compensation and $6.8 million of favorable development in short-tail lines. The International Specialty segment had net negligible prior year loss development. The Syndicate 1200 segment had net favorable loss development of $6.2 million primarily attributable to $12.8 million of favorable development in various property classes, partially offset by $6.3 million of unfavorable development in liability lines associated with municipality business. The Run-off Lines segment had net unfavorable development of $15.5 million primarily due to $10.5 million of unfavorable development in the asbestos liability driven by higher defense costs for claims from general liability policies written on a direct basis, as well as commutation and settlement activity, and $2.0 million of unfavorable development in the medical malpractice liability line due to the loss of the New York Liquidation Bureau funding for structured settlement annuity payments.

Net favorable loss development recognized in 2012 for prior accident years was a $32.9 million reduction to losses and LAE. The Excess and Surplus Lines segment had net favorable loss development of $48.0 million primarily driven by $39.2 million of favorable development in the general and products liability lines of business. The Commercial Specialty segment had net unfavorable loss development of $22.2 million primarily driven by $31.5 million of unfavorable development in general liability due to increases in claim severity, $5.5 million of unfavorable development in the automobile liability lines of business, partially offset by $10.1 million of favorable development in workers compensation. The International Specialty segment had net favorable loss development of $7.2 million primairly attributable to short-tail non-catastrophe losses. The Syndicate 1200 segment had net favorable loss development of $9.7 million primarily driven by favorable development in the property facultative, North American binder and Directors and Officers classes of business, partially offset by unfavorable development in the general liability property class of business. The Run-off Lines segment had net unfavorable development of $9.8 million primarily due to $9.1 million of unfavorable development in asbestos claims driven by increasing defense costs in the primary book and increasing settlement costs in the assumed book, partially offset by favorable development in workers compensation and run-off reinsurance claims.

Net favorable loss development recognized in 2011 for prior accident years was a $3.4 million reduction to losses and LAE. The Excess and Surplus Lines segment had net favorable loss development of $33.8 million primarily due to $30.2 million of favorable development in the general and products liability lines of business resulting from better than expected claim severity, and favorable development in the automobile liability, professional liability and property lines of business. The Commercial Specialty segment had net unfavorable loss development of $8.4 million primarily driven by $16.3 million of unfavorable development in general liability due to increases in claim severity, partially offset by $5.9 million of favorable development in workers compensation and $3.7 million of favorable development in an assumed Directors and Officers program. The International Specialty segment had net favorable loss development of $4.6 million primarily driven by $7.0 million of favorable development driven by short-tail non-catastrophe losses, partially offset by $2.5 million of unfavorable development in long-tail lines primarily due to the 2010 Deepwater Horizon incident. The Syndicate 1200 segment had net unfavorable loss development of $18.7 million primarily driven by a reduction in the estimate of future reinsurance recoveries of $14.5 million in the professional indemnity, Directors and Officers, general liability, property facultative and financial institutions classes of business and unfavorable development related to the medical malpractice and discontinued liability lines of business where the claims experience was worse than expected. The Run-off Lines segment had net unfavorable development of $7.9 million primarily due to $4.6 million of unfavorable development on run-off reinsurance claims primarily related to Hurricanes Katrina, Rita and Wilma and $11.7 million of unfavorable development in asbestos and environmental lines. The Run-off Lines unfavorable development was partially offset by the collection of a contribution settlement from another insurer for a California workers compensation indemnity claim and favorable development in other lines.

In the opinion of management, our reserves represent the best estimate of our ultimate liabilities, based on currently known facts, current law, current technology and assumptions considered reasonable where facts are not known. Due to the significant uncertainties and related management judgments, there can be no assurance that future loss development, favorable or unfavorable, will not occur.

Pension-type reserves (tabular reserves) are indemnity reserves that are calculated using discounts determined with reference to actuarial tables, which incorporate interest and contingencies such as mortality, remarriage, inflation or recovery from disability applied to a reasonably determinable payment stream. We discounted certain workers compensation pension-type reserves using a maximum interest rate of 3.5% in 2013, 2012 and 2011. The amount of unamortized discount was $19.5 million, $20.8 million and $22.0 million at December 31, 2013, 2012 and 2011, respectively.

F-30

6. Derivative Instruments

Through our subsidiary Argo Re, in 2011 we entered into two reinsurance contracts with a special purpose reinsurance company that provided us with protection against certain severe catastrophe events and the occurrence of multiple significant catastrophe events during the same year. The first contract was effective June 18, 2011 and provided coverage of $100 million for hurricanes and earthquakes in the U.S., windstorms in Europe and earthquakes in Japan based on the occurrence of second and subsequent events on a per-occurrence basis over an 18-month coverage period. Each event had an activation level, which, if attained, put the notes on risk for a subsequent event. Once the coverage had been activated, a second loss during the coverage period in excess of the loss trigger level resulted in a loss to the note holders. The first contract expired in December 2012. The second contract entered into on December 28, 2011 and effective January 1, 2012, provided coverage of $100 million for hurricanes and earthquakes (including fire) in the U.S. and covers losses for the first and subsequent events on a per-occurrence basis over a 24-month coverage period. Both of these transactions ignore the effects of inuring reinsurance, creating the remote possibility of a double recovery on covered events, and are therefore deemed to be derivatives.

We recorded these contracts at fair value, and such fair value is included in “Other assets” in our Consolidated Balance Sheets with any changes in the value reflected in “Other reinsurance-related expenses” in our Consolidated Statements of Income (Loss). As there is no quoted fair value available for these derivatives, the fair value was estimated by management taking into account changes in the market for catastrophe bond reinsurance contracts with similar economic characteristics and potential recoveries from events preceding the valuation date. Included in “Other reinsurance-related expenses” for the years ended December 31, 2013, 2012 and 2011 were $19.2 million, $27.3 million and $5.9 million, respectively. The expense in each respective period was due to the change in the fair value of the derivative(s), principally due to the passage of the transaction’s risk coverage term. Included in “Other assets” in our Consolidated Balance Sheets were $2.6 million and $6.9 million, which represent the fair value of these contracts at December 31, 2013 and 2012, respectively.

The special purpose reinsurance company that is the counterparty to this transaction is a variable interest entity under the provisions of ASC Topic 810-10, “Consolidation.” Argo Group is not the primary beneficiary of this entity and is therefore not required to consolidate it in our consolidated financial statements.

7. Senior Unsecured Fixed Rate Notes

In September 2012, through our wholly owned subsidiary Argo Group US, we issued $143,750,000 aggregate principal amount of Argo Group US’s 6.5% Senior Notes due September 15, 2042 (the “Notes”). The Notes bear interest at 6.5%, payable quarterly in cash in arrears on the 15th day of March, June, September and December of each year, beginning on December 15, 2012. The Notes are unsecured and unsubordinated obligations of Argo Group US and rank equally in right of payment with all of Argo Group US’s other unsecured and unsubordinated debt. The Notes are guaranteed on a full and unconditional senior unsecured basis by Argo Group. The Notes may be redeemed, for cash, in whole or in part, on or after September 15, 2017, at Argo Group US’s option, at any time and from time to time, prior to maturity at a redemption price equal to 100% of the principal amount of the Notes to be redeemed, plus accrued but unpaid interest on the principal amount being redeemed to, but not including, the redemption date. The outstanding principal balance on the Notes was $143.8 million at December 31, 2013 and 2012.

The proceeds, net of issuance costs, from the sale of the Notes were $138.7 million and were used to repay $118.6 million of principal related to two of our trust preferred securities, with the remainder used for general corporate purposes.

8. Junior Subordinated Debentures

Through a series of trusts, that are wholly-owned subsidiaries (non-consolidated), we issued debt. The debentures are variable with the rate being reset quarterly and subject to certain interest rate ceilings. Interest payments are payable quarterly. The debentures are all unsecured and are subordinated to other indebtedness. All are redeemable subject to certain terms and conditions at a price equal to 100% of the principal plus accrued and unpaid interest.

On October 1, 2012, we gave notice of redemption to the trustee of our 8.85% PXRE Capital Trust I $103,093,000 Junior Subordinated Debt Securities (“Capital Trust I”). Capital Trust I was redeemed on November 13, 2012 at a redemption price equal to 102.090% of its principal amount, plus accrued and unpaid interest through the date of redemption. Additionally, on October 8, 2012, we gave notice of redemption to the trustee of our 9.75% PXRE Capital Trust III $15,464,000 Junior Subordinated Debt Securities (“Capital Trust III”). Capital Trust III was redeemed on November 23, 2012 at a redemption price equal to 100.975% of its principal amount, plus accrued and unpaid interest through the date of redemption. Interest on Capital Trust I and Capital Trust III ceased to accrue on and after the redemption dates. Subsequent to redemption, we received $3.1 million and $0.5 million for our ownership in Capital Trust I and Capital Trust III, respectively. Redemption of Capital Trust I and Capital Trust III resulted in a call premium of $2.1 million and $0.1 million, respectively, shown in “Debt extinguishment costs” in our Consolidated Statement of Income (Loss) for the year ended December 31, 2012. Capital Trust I had an unamortized discount of $0.4 million that was written off to “Interest expense” in our Consolidated Statement of Income (Loss) for the year ended December 31, 2012.

F-31

A summary of our outstanding junior subordinated debentures at December 31, 2013 and 2012 is presented below:

(in millions)
Issue Date	Trust Preferred Pools	Maturity		Redeemable		Rate Structure	Interest Rate at December 31, 2013			Amount
Argo Group
05/15/2003	PXRE Capital Statutory Trust II		05/15/2033		05/15/2008	3M LIBOR + 4.10%		4.34	%	$	18.1
10/29/2003	PXRE Capital Trust V		10/29/2033		10/29/2008	3M LIBOR + 3.85%		4.09	%		20.6
11/06/2003	PXRE Capital Trust VI		09/30/2033		09/30/2008	3M LIBOR + 3.90%		4.15	%		10.3
Argo Group US
05/15/2003	Argonaut Group Statutory Trust I		05/15/2033		05/15/2008	3M LIBOR + 4.10%		4.34	%		15.5
12/16/2003	Argonaut Group Statutory Trust III		01/08/2034		01/08/2009	3M LIBOR + 4.10%		4.34	%		12.3
04/29/2004	Argonaut Group Statutory Trust IV		04/29/2034		04/29/2009	3M LIBOR + 3.85%		4.09	%		13.4
05/26/2004	Argonaut Group Statutory Trust V		05/24/2034		05/24/2009	3M LIBOR + 3.85%		4.09	%		12.3
05/12/2004	Argonaut Group Statutory Trust VI		05/12/2034		06/01/2009	3M LIBOR + 3.80%		4.04	%		13.4
09/17/2004	Argonaut Group Statutory Trust VII		12/15/2034		09/17/2009	3M LIBOR + 3.60%		3.84	%		15.5
09/22/2004	Argonaut Group Statutory Trust VIII		09/22/2034		09/22/2009	3M LIBOR + 3.55%		3.80	%		15.5
10/22/2004	Argonaut Group Statutory Trust IX		12/15/2034		12/15/2009	3M LIBOR + 3.60%		3.84	%		15.5
09/15/2005	Argonaut Group Statutory Trust X		09/15/2035		09/15/2010	3M LIBOR + 3.40%		3.64	%		30.9
	Total Outstanding									$	193.3
(in millions)
Issue Date	Trust Preferred Pools	Maturity		Redeemable		Rate Structure	Interest Rate at December 31, 2012			Amount
Argo Group
05/15/2003	PXRE Capital Statutory Trust II		05/15/2033		05/15/2008	3M LIBOR + 4.10%		4.41	%	$	18.1
10/29/2003	PXRE Capital Trust V		10/29/2033		10/29/2008	3M LIBOR + 3.85%		4.16	%		20.6
11/06/2003	PXRE Capital Trust VI		09/30/2033		09/30/2008	3M LIBOR + 3.90%		4.21	%		10.3
Argo Group US
05/15/2003	Argonaut Group Statutory Trust I		05/15/2033		05/15/2008	3M LIBOR + 4.10%		4.41	%		15.5
12/16/2003	Argonaut Group Statutory Trust III		01/08/2034		01/08/2009	3M LIBOR + 4.10%		4.44	%		12.3
04/29/2004	Argonaut Group Statutory Trust IV		04/29/2034		04/29/2009	3M LIBOR + 3.85%		4.16	%		13.4
05/26/2004	Argonaut Group Statutory Trust V		05/24/2034		05/24/2009	3M LIBOR + 3.85%		4.16	%		12.3
05/12/2004	Argonaut Group Statutory Trust VI		05/12/2034		06/01/2009	3M LIBOR + 3.80%		4.11	%		13.4
09/17/2004	Argonaut Group Statutory Trust VII		12/15/2034		09/17/2009	3M LIBOR + 3.60%		3.91	%		15.5
09/22/2004	Argonaut Group Statutory Trust VIII		09/22/2034		09/22/2009	3M LIBOR + 3.55%		3.86	%		15.5
10/22/2004	Argonaut Group Statutory Trust IX		12/15/2034		12/15/2009	3M LIBOR + 3.60%		3.91	%		15.5
09/15/2005	Argonaut Group Statutory Trust X		09/15/2035		09/15/2010	3M LIBOR + 3.40%		3.71	%		30.9
	Total Outstanding									$	193.3

F-32

9. Other Indebtedness

Floating Rate Loan Stock

This debt was assumed through the acquisition of Argo International. These notes are unsecured. All are redeemable subject to certain terms and conditions at a price up to 100% of the principal plus accrued and unpaid interest. Interest on the U.S. Dollar and Euro notes is due semiannually and quarterly, respectively. A summary of the notes outstanding at December 31, 2013 and 2012 is presented below:

(in millions)
Issue Date	Currency	Maturity		Redeemable		Rate Structure	Interest Rate at December 31, 2013	Amount
12/08/2004	U.S. Dollar		11/15/2034		12/08/2009	6 month LIBOR + 4.2%	4.60%	$	6.5
09/06/2005	Euro		08/22/2035		09/06/2010	3 month LIBOR + 4.0%	4.22%		16.3
10/31/2006	U.S. Dollar		01/15/2036		01/15/2011	6 month LIBOR + 4.0%	4.40%		10.0
10/31/2006	Euro		11/22/2036		10/31/2011	3 month LIBOR + 4.0%	4.22%		14.3
06/08/2007	Euro		09/15/2037		06/08/2012	3 month LIBOR + 3.9%	4.12%		18.4
								$	65.5
(in millions)
Issue Date	Currency	Maturity		Redeemable		Rate Structure	Interest Rate at December 31, 2012	Amount
12/08/2004	U.S. Dollar		11/15/2034		12/08/2009	6 month LIBOR + 4.2%	4.93%	$	6.5
09/06/2005	Euro		08/22/2035		09/06/2010	3 month LIBOR + 4.0%	4.19%		15.5
10/31/2006	U.S. Dollar		01/15/2036		01/15/2011	6 month LIBOR + 4.0%	4.73%		10.0
10/31/2006	Euro		11/22/2036		10/31/2011	3 month LIBOR + 4.0%	4.19%		13.6
06/08/2007	Euro		09/15/2037		06/08/2012	3 month LIBOR + 3.9%	4.08%		17.4
								$	63.0

At December 31, 2011, the floating rate loan stock was $64.7 million. No principal payments have been made since the acquisition of Argo International. The floating rate loan stock denominated in Euros fluctuates due to foreign currency translation. The outstanding balance on these loans was $49.0 million and $46.5 million as of December 31, 2013 and 2012, respectively. The foreign currency translation adjustment is recorded in our Consolidated Statements of Income (Loss).

Borrowing Under Revolving Credit Facility

On April 30, 2010, each of Argo Group, Argo Group US, Argo International Holdings, Ltd. and Argo International (the “Borrowers”) entered into a $150.0 million Credit Agreement (“Credit Agreement”) with a syndicate of commercial banks. On July 22, 2011, the Borrowers entered into Amendment No. 2 to the Credit Agreement, which increased the revolving credit facility under the Credit Agreement from $150.0 million to $170.0 million, extended the maturity date from April 30, 2013 to April 30, 2014 and modified certain other terms. Borrowings under the Credit Agreement may be used for general corporate purposes, including working capital and permitted acquisitions, and each of the Borrowers has agreed to be jointly and severally liable for the obligations of the other Borrowers under the Credit Agreement. At December 31, 2013 and 2012, we had no borrowings outstanding under the Credit Agreement.

The Credit Agreement contains customary events of default. If an event of default occurs and is continuing, the Borrowers could be required to repay all amounts outstanding under the Credit Agreement. Lenders holding more than 51% of the loans and commitments under the Credit Agreement may elect to accelerate the maturity of the loans under the Credit Agreement upon the occurrence and during the continuation of an event of default. No defaults or events of defaults have occurred as of this filing.

Included in the Credit Agreement is a provision that allows up to $15.0 million of the revolving credit facility to be used for letters of credit (“LOCs”), subject to availability under the line. At December 31, 2013 and 2012, we had $0.2 million and $0.8 million, respectively, in LOCs against the credit facility.

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Other Debt

As part of the ARIS acquisition, at December 31, 2013 and 2012, we have a note payable for $0.8 million, of which $0.2 million is on a recourse basis. The note has a variable interest rate of 2.00% above 30-day LIBOR, with the variable interest rate being reset quarterly and subject to certain interest rate ceilings. The interest rate at December 31, 2012 was 2.21%. Interest payments are payable quarterly. The note payable matured pursuant to its terms on December 16, 2013, and while accrued interest has been paid as scheduled, the principal amount remained unpaid and outstanding as of year end. The parties have entered into negotiations to restructure this obligation on mutually acceptable terms in view of the fact that our investment in ARIS has yet to generate meaningful returns.

10. Shareholders’ Equity

On February 15, 2013, our Board of Directors declared a quarterly cash dividend in the amount of $0.15 on each shares of common stock outstanding or $0.14 on each share outstanding adjusted for the 10% stock dividend discussed below. On March 15, 2013, we paid $3.7 million to our shareholders of record on March 1, 2013.

On May 7, 2013, our Board of Directors declared a 10% stock dividend, payable on June 17, 2013, to shareholders of record at the close of business on June 3, 2013. As a result of the stock dividend, 2,447,839 additional shares were issued. Cash was paid in lieu of fractional shares of our common shares. All references to share and per share amounts in this document and related disclosures have been adjusted to reflect the stock dividend for all periods presented.

On May 7, 2013, August 6, 2013 and November 4, 2013, our Board of Directors declared a quarterly cash dividend in the amount of $0.15 on each share of common stock outstanding, on a post stock dividend basis. On March 15, 2013, June 20, 2013, September 16, 2013 and December 16, 2013, we paid $3.7 million, $4.1 million, $4.0 million and $4.0 million to our shareholders of record on March 1, 2013, June 3, 2013, September 2, 2013 and December 2, 2013, respectively. For the year ended December 31, 2013, we paid cash dividends totaling $15.8 million to our shareholders.

On February 15, 2012, May 8, 2012, August 7, 2012 and November 6, 2012, our Board of Directors declared a quarterly cash dividend in the amount of $0.11 on each share of common stock outstanding. On March 15, 2012, June 15, 2012, September 18, 2012 and December 17, 2012, we paid $3.2 million, $3.1 million, $3.0 million and $3.0 million to our shareholders of record on March 1, 2012, June 1, 2012, September 4, 2012 and December 3, 2012, respectively. For the year ended December 31, 2012, we paid cash dividends totaling $12.3 million to our shareholders.

On February 18, 2011, May 3, 2011, August 5, 2011 and November 8, 2011, our Board of Directors declared a quarterly cash dividend in the amount of $0.11 on each share of common stock outstanding. On March 15, 2011, June 15, 2011, September 15, 2011 and December 15, 2011, we paid $3.3 million, $3.3 million, $3.3 million and $3.2 million to our shareholders of record on March 1, 2011, June 1, 2011, September 1, 2011 and December 1, 2011, respectively. For the year ended December 31, 2011, we paid cash dividends totaling $13.1 million to our shareholders.

We are authorized to issue 30 million shares of $1.00 par value preferred shares. As of December 31, 2013 and 2012, no preferred shares were issued and outstanding.

On February 18, 2011, our Board of Directors authorized the repurchase of up to $150.0 million of our common shares (“2011 Repurchase Authorization”). The 2011 Repurchase Authorization supersedes the November 13, 2007 repurchase authorization, which also had authorized the repurchase of up to $150.0 million of our common shares. On November 5, 2013, our Board of Directors authorized the repurchase of up to $150.0 million of our common shares (“2013 Repurchase Authorization”). The 2013 Repurchase Authorization supersedes the 2011 Repurchase Authorization such that no further amounts could be repurchased under the 2011 Repurchase Authorization. As of December 31, 2013, availability under the 2013 Repurchase Authorization for future repurchases of our common shares was $143.6 million.

For the three months ended December 31, 2013, we repurchased 149,744 common shares on the open market for $6.4 million. For the twelve months ended December 31, 2013, we repurchased 526,583 common shares on the open market for $22.2 million. These shares are being held as treasury shares in accordance with the provisions of the Bermuda Companies Act 1981.

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In 2013, we repurchased shares under Securities Exchange Act of 1934 Rule 10b5-1 trading plans as follows:

Date Trading	2013	Number of		Average Price of		Total Cost		Repurchase
Plan Initiated	Purchase Period	Shares Repurchased		Shares Repurchased		(in millions)		Authorization Year
12/14/2012	01/01/13-01/17/13(1)		171,480	$	35.41	$	6.0		2011
03/15/2013	03/16/13-05/01/13		205,452	$	40.75	$	8.3		2011
06/14/2013	06/18/13-07/31/13		195,217	$	43.47	$	8.5		2011

⁽¹⁾  The above table only reflects the 2013 activity under this Rule 10b5-1 trading plan. In 2012, 117,663 shares were repurchased under this Rule 10b5-1 trading plan for a total cost of $3.9 million with an average price of $33.38. Total shares repurchased in 2012 and 2013 under this Rule 10b5-1 trading plan were 289,143 shares at an average price of $34.58 for a total cost of $9.9 million.

At December 31, 2013, we had the following authorized, unissued common shares reserved for future issuance:

Reserve Name	Shares Reserved
2007 Long-Term Incentive Plan		3,945,354
2007 Employee Share Purchase Plan		1,432,683
Historical stock compensation plans		44,785
Total		5,422,822

Shares reserved under the historical plans represent all grants issued and outstanding under terminated plans as of December 31, 2013. (See Note 15, “Share-based Compensation” for further discussion.)

11. Net Income (Loss) Per Common Share

The following table presents the calculation of net income (loss) per common share on a basic and diluted basis for the years ended December 31, 2013, 2012 and 2011:

(in millions, except number of shares and per share amounts)	2013		2012		2011
Net income (loss)	$	143.2	$	52.3	$	(81.9	)
Weighted average common shares outstanding—basic		26,851,341		28,095,210		29,887,249
Effect of dilutive securities:
Equity compensation awards		1,018,192		555,238		0
Weighted average common shares outstanding—diluted		27,869,533		28,650,448		29,887,249
Net income (loss) per common share—basic	$	5.33	$	1.86	$	(2.74	)
Net income (loss) per common share—diluted	$	5.14	$	1.83	$	(2.74	)

No adjustment was made in 2011 for any common stock equivalents because their effects would have been anti-dilutive. These potentially dilutive shares totaled 385,077.

Excluded from the weighted average common shares outstanding calculation at December 31, 2013, 2012 and 2011 are 7,558,345 shares, 6,459,613 shares and 4,971,305 shares, respectively, which are held as treasury shares. The shares are excluded as of their repurchase date. In 2013, equity compensation awards to purchase 3,300 shares of common stock were excluded from the computation of diluted net income per common share as these instruments were anti-dilutive. These instruments expire at varying times from 2014 through 2020. In 2012, equity compensation awards to purchase 550,632 shares of common stock were excluded from the computation of diluted net income per common share as these instruments were anti-dilutive. These instruments expire at varying times from 2013 through 2019. In 2011, equity compensation awards to purchase 1,920,151 shares of common stock were excluded from the computation of diluted net loss per common share because the net loss caused their effect to be anti-dilutive. These instruments expire at varying times from 2012 through 2018.

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12. Accumulated Other Comprehensive Income (Loss)

In February 2013, the FASB issued Accounting Standards Update 2013-02 that amends ASC 220, “Comprehensive Income.” See Note 1, “Business and Significant Accounting Policies” for additional information regarding the provisions of this update. Effective January 1, 2013, we adopted the update prospectively.

A summary of changes in accumulated other comprehensive income (loss), net of taxes (where applicable) by component for the year ended December 31, 2013 is presented below:

(in millions)	Foreign Currency Translation Adjustments			Unrealized Holding Gains on Securities			Defined Benefit Pension Plans			Total
Beginning balance, January 1, 2013	$	(8.7	)	$	204.1		$	(5.9	)	$	189.5
Other comprehensive income (loss) before reclassifications		(2.8	)		0.2			1.3			(1.3	)
Amounts reclassified from accumulated other comprehensive income (loss)		0.0			(40.4	)		0.0			(40.4	)
Net current-period other comprehensive income (loss)		(2.8	)		(40.2	)		1.3			(41.7	)
Ending balance, December 31, 2013	$	(11.5	)	$	163.9		$	(4.6	)	$	147.8

The amounts reclassified from accumulated other comprehensive income (loss) shown in the above table have been included in the following captions in our Consolidated Statements of Income (Loss):

(in millions)	Year Ended December 31, 2013
Unrealized gains and losses on securities
Net realized investment gains	$	(59.8	)
Provision for income taxes		19.4
Net of taxes	$	(40.4	)

13. Underwriting, Acquisition and Insurance Expenses

Underwriting, acquisition and insurance expenses for the years ended December 31, 2013, 2012 and 2011 were as follows:

(in millions)	2013			2012			2011
Commissions	$	229.6		$	198.2		$	183.2
General expenses		272.8			248.0			210.1
Premium taxes, boards and bureaus		24.2			22.8			24.7
		526.6			469.0			418.0
Net (deferral) amortization of policy acquisition costs		(15.8	)		(4.5	)		7.7
Total underwriting, acquisition and insurance expenses	$	510.8		$	464.5		$	425.7

Included in general expenses for the years ended December 31, 2013, 2012 and 2011 is $23.0 million, $10.3 million and $4.4 million, respectively, in additional expense for our total equity compensation, due to the increase in our stock price.

14. Pension Benefits

Argo Group US sponsors a qualified defined benefit plan and non-qualified unfunded supplemental defined benefit plans, all of which were curtailed effective February 2004. The following tables set forth the change in plan assets and the change in projected benefit obligation, as of December 31 with respect to these plans. The assets and liabilities of the plans were measured as of December 31 of the respective years presented.

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(in millions)	2013			2012
Change in plan assets
Fair value of plan assets at beginning of year	$	20.1		$	19.7
Actual return on plan assets		1.9			2.0
Employer contributions		0.2			0.2
Settlements and benefits paid		(2.0	)		(1.8	)
Fair value of plan assets at end of year	$	20.2		$	20.1
(in millions)	2013			2012
Change in projected benefit obligation
Projected benefit obligation at beginning of year	$	24.6		$	22.7
Interest cost		0.8			1.0
Actuarial (gain) loss		(0.8	)		2.7
Benefits paid		(2.0	)		(1.8	)
Projected benefit obligation at end of year	$	22.6		$	24.6

As of December 31, 2013 and 2012, the qualified pension plan was underfunded by $0.3 million and $2.2 million, respectively, and the non-qualified pension plans were unfunded by $2.2 million and $2.3 million, respectively. Underfunded and unfunded amounts are included in “Other liabilities” in our Consolidated Balance Sheets.

Assumptions used to determine benefit obligations at December 31 were as follows:

	2013			2012
Weighted average discount rate		4.42	%		3.63	%
Expected rate of increase in future compensation levels		n/a			n/a

Assumptions used to determine net periodic benefit cost for the years ended December 31:

	2013			2012			2011
Weighted average discount rate		3.63	%		4.50	%		4.98	%
Expected return on plan assets		6.00	%		6.00	%		6.00	%
Expected rate of increase in future compensation levels		n/a			n/a			n/a

In 2013, 2012 and 2011, the expected return on plan assets was ascertained using multiple factors that include market conditions, duration of the fixed maturity portion of the portfolio and long-term return forecasts provided by several asset management companies.

Components of net periodic benefit cost for the years ended December 31 were as follows:

(in millions)	2013			2012			2011
Interest cost	$	0.8		$	1.0		$	1.0
Expected return on plan assets		(1.0	)		(1.1	)		(1.2	)
Settlement charge		0.0			0.0			0.2
Amortization of actuarial loss		0.3			0.3			0.2
Net periodic benefit cost	$	0.1		$	0.2		$	0.2

We estimate that $0.3 million of unrecognized actuarial loss will be amortized from accumulated other comprehensive gain into net periodic benefit cost during 2014.

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The projected benefit obligation for the non-qualified unfunded supplemental defined benefit plans, with accumulated benefit obligations in excess of plan assets, was $2.2 million and $2.3 million as of December 31, 2013 and 2012, respectively. The fair value of plan assets for these plans was zero for these same periods. The accumulated benefit obligation for all defined benefit plans is equal to the projected benefit obligation for each of the years presented.

Our investment policy for the qualified plan requires the investments be prudently selected and properly diversified so as to minimize the risk of large losses in accordance with applicable laws including the Employee Retirement Income Security Act of 1974. The overall investment strategy is to achieve a balance of long-term growth of capital and current income, taking into account the need for liquidity to pay benefits as they come due. Periodic shifts in the asset allocation may be made based on the assessment of current and prospective market conditions.

The investment policy for the qualified plan contains asset allocation guidelines with target allocations that remain effective until such time as the investment policy is revised. At December 31, 2013, the target allocations were 65% fixed maturity investments, highly liquid fixed maturity investments, and cash; and 35% equity investments. The target asset allocation percentages were selected based on risk diversification needs, expected distribution patterns and asset manager recommendations. The actual asset allocation as of December 31, 2013 was 67.4% fixed maturity investments, highly liquid fixed maturity investments and cash; and 32.6% equity investments, of which 25.4% and 7.2% were allocated between U.S. and international equities, respectively. These allocations were in compliance with the investment policy that allows the investment manager based on its judgment and market conditions to deviate from the target allocations.

Following is a description of the valuation techniques used to measure the plan’s assets at fair value.

Mutual funds: Fair value is determined using observable, market-based inputs on the valuation date.

Common collective trust and money market mutual fund: We determine fair value based on the net asset values provided by the plan trustee recalculated daily.

The methods described above may produce a fair value calculation that may not be indicative of net realizable value or reflective of future fair values. Furthermore, while it is believed the valuation methods are appropriate and consistent with other market participants, the use of different methodologies or assumptions to determine the fair value of certain financial instruments could result in a different fair value measurement at the reporting date.

The fair values of the plan assets at December 31, 2013 and 2012 by asset category are as follows:

			Fair Value Measurements
			at Reporting Date Using
(in millions)	December 31, 2013		Level 1  (a)		Level 2  (b)		Level 3  (c)
Equity Securities:
Mutual Funds:
Large cap U.S. equity	$	3.2	$	3.2	$	0.0	$	0.0
Small-mid cap U.S. equity		1.4		1.4		0.0		0.0
International equity		1.5		1.5		0.0		0.0
Real estate		0.5		0.5		0.0		0.0
Convertible bonds and equities		0.2		0.2		0.0		0.0
U.S. and global government and corporate fixed maturity		12.9		12.9		0.0		0.0
Cash and short-term investments:
Short-term investment fund (1)		0.5		0.0		0.5		0.0
Total	$	20.2	$	19.7	$	0.5	$	0.0

^(a)  Quoted prices in active markets for identical assets

^(b)  Significant other observable inputs

^(c)  Significant unobservable inputs

⁽¹⁾  Assets invested in one common collective trust composed of high-grade money market money instruments with short maturities.

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			Fair Value Measurements
			at Reporting Date Using
(in millions)	December 31, 2012		Level 1  (a)		Level 2  (b)		Level 3  (c)
Equity Securities:
Mutual Funds:
Large cap U.S. equity	$	2.6	$	2.6	$	0.0	$	0.0
Small-mid cap U.S. equity		1.0		1.0		0.0		0.0
International equity		1.3		1.3		0.0		0.0
Real estate		0.5		0.5		0.0		0.0
Convertible bonds and equities		0.1		0.1		0.0		0.0
U.S. and global government and corporate fixed maturity		13.9		13.9		0.0		0.0
Cash and short-term investments:
Short-term investment fund (1)		0.7		0.0		0.7		0.0
Total	$	20.1	$	19.4	$	0.7	$	0.0

^(a)  Quoted prices in active markets for identical assets

^(b)  Significant other observable inputs

^(c)  Significant unobservable inputs

⁽¹⁾  Assets invested in one common collective trust composed of high-grade money market money instruments with short maturities.

Based on the current funding status of the pension plan, effects of the curtailment and expected changes in pension plan asset values and pension obligations, we do not believe any significant funding of the pension plan will be required during the year ending December 31, 2014.

We expect to make the following benefit payments:

	Pension
(in millions)	Benefits
2014	$	1.7
2015		1.8
2016		1.6
2017		1.9
2018		1.6
Years 2019 to 2023		7.6
Total	$	16.2

Substantially all of our employees are either eligible or mandated by applicable laws to participate in employee savings plans. Under these plans, a percentage of the employee’s pay may be or is mandated based on applicable laws to be contributed to various savings alternatives. The plans also call for Company contributions under several formulae. Charges to income related to our contributions were $6.8 million in 2013, $6.3 million in 2012 and $5.6 million in 2011.

15. Share-based Compensation

The fair value method of accounting is used for equity-based compensation plans. Under the fair value method, compensation cost is measured based on the fair value of the award at the measurement date and recognized over the requisite service period. We use the Black-Scholes model to estimate the fair values on the measurement date for share options and share appreciation rights (“SARs”). The Black-Scholes model uses several assumptions to value a share award. The volatility assumption is based on the historical change in Argo Group’s stock price over the previous five years preceding the measurement date. The risk-free rate of return assumption is based on the five-year U.S. Treasury constant maturity rate on the measurement date. The expected award life is based upon the average holding period over the history of the incentive plan. The expected dividend yield is based on our history and expected dividend payouts. The following table summarizes the assumptions we used for the years ended December 31, 2013, 2012 and 2011:

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	2013	2012	2011
Risk-free rate of return	0.80% to 1.71%	0.68% to 1.11%	0.81% to 2.07%
Expected dividend yields	1.49% to 1.67%	1.58% to 1.67%	1.37% to 1.56%
Expected award life (years)	4.91 to 5.07	5.03 to 5.06	5.04 to 5.07
Expected volatility	26.3% to 32.1%	32.1% to 32.8%	32.2% to 32.8%

We estimate forfeitures based on historical forfeitures patterns, thereby recognizing expense only for those awards that are expected to vest. The estimate of forfeitures is adjusted as actual forfeitures differ from our estimate, resulting in recognition of compensation expense only for those awards that actually vest.

The compensation expense recognized under the share-based payment plans was $23.0 million ($18.3 million, net of tax), $10.3 million ($8.4 million, net of tax) and $4.4 million ($4.0 million, net of tax) for the years ended December 31, 2013, 2012 and 2011, respectively. The compensation expense is included in “Underwriting, acquisition and insurance expenses” in our Consolidated Statements of Income (Loss).

We present all tax benefits resulting from the exercise of stock options and vesting of non-vested shares as cash flows from financing activities. Excess tax benefits are realized tax benefits from tax deductions for exercised options and vested shares in excess of the deferred tax asset attributable to stock compensation costs for such options. Such tax benefits and cash flows were immaterial for all reporting periods.

All outstanding awards were adjusted to reflect the 10% stock dividend, resulting in a 10% increase to the number of awards outstanding and a 9.09% reduction in the exercise price.

Argo Group’s 2007 Long-Term Incentive Plan

In November 2007, the shareholders of Argo Group approved the 2007 Long-Term Incentive Plan (the “2007 Plan”), which provides for an aggregate of 4.5 million shares of our common stock that may be issued to executives, non-employee directors and other key employees. The share awards may be in the form of share options, SARs, restricted shares, restricted share units, performance units, performance shares or other share-based incentive awards. Shares issued under this plan may be shares that are authorized and unissued or shares that we reacquired, including shares purchased on the open market. Share options and SARs will count as one share for the purposes of the limits under the 2007 Plan; restricted shares, restricted share units, performance units, performance shares or other share-based incentive awards that settle in common shares will count as 2.75 shares for purpose of the limits under the 2007 Plan.

Share options may be in the form of incentive share options, non-qualified share options and restorative options. Share options are required to have an exercise price that is not less than the market value on the date of grant. We are prohibited from repricing the options. The term of the share options cannot exceed seven years from the grant date.

A summary of option activity under the 2007 Plan as of December 31, 2013 and changes during the year is as follows:

						Weighted-Average		Aggregate
				Weighted-Average		Remaining		Intrinsic
	Shares			Exercise Price		Contractual Term		Value
Outstanding at January 1, 2013		418,325		$	33.56
Granted		0		$	0.00
Exercised		(215,182	)	$	32.89
Expired or forfeited		(45,051	)	$	34.21
Outstanding at December 31, 2013		158,092		$	34.27		1.3	$	1,931,749
Vested and exercisable at end of year		158,092		$	34.27		1.3	$	1,931,749

Options outstanding under this plan vested over a one to five year period, subject to continued employment. As of December 31, 2013, all options under this plan were fully vested. Cash received for the exercise of options under this plan was $6.4 million for the year ended December 31, 2013.

The aggregate intrinsic value is calculated as the difference between the exercise price of the underlying awards and the quoted price of our common stock for those options where the exercise price was below the quoted price at December 31, 2013.

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There were no options granted under this plan during the year ended December 31, 2013 and 2012. The weighted-average grant date fair value of options granted during the year ended December 31, 2011 was $10.47.

A summary of restricted share activity under the 2007 Plan as of December 31, 2013 and changes during the year is as follows:

				Weighted-Average
				Grant Date
	Shares			Fair Value
Outstanding at January 1, 2013		236,139		$	30.09
Granted		127,288		$	38.18
Vested and issued		(55,551	)	$	30.55
Expired or forfeited		(49,901	)	$	35.34
Outstanding at December 31, 2013		257,975		$	32.97

As of December 31, 2013, there was $5.7 million of total unrecognized compensation cost related to restricted share compensation arrangements granted by Argo Group. The weighted-average period over which this unrecognized expense is expected to be recognized is 2.0 years. The total fair value of shares vested during the year ended December 31, 2013 was $1.7 million.

A summary of stock-settled SARs activity under the 2007 Plan as of December 31, 2013 and changes during the year is as follows:

				Weighted-Average
	Shares			Exercise Price
Outstanding at January 1, 2013		1,261,448		$	27.04
Granted		333,004		$	37.19
Exercised		(181,043	)	$	26.88
Expired or forfeited		(124,711	)	$	29.27
Outstanding at December 31, 2013		1,288,698		$	29.47
Vested or expected to vest as of end of year		1,164,170		$	29.30
Exercisable at end of year		595,312		$	26.86

The stock-settled SARs vest over a one to four year period. Upon exercise of the stock-settled SARs, the employee is entitled to receive shares of our common stock equal to the appreciation of the stock as compared to the exercise price. For the year ended December 31, 2013, 181,043 stock-settled SARs were exercised resulting in 44,983 shares being issued. As of December 31, 2013, there was $4.2 million of total unrecognized compensation cost related to stock-settled SARs outstanding. The weighted-average period over which this unrecognized expense is expected to be recognized is 2.3 years. Aggregate intrinsic value of the stock-settled SARs at December 31, 2013 was $21.9 million.

A summary of cash-settled SARs activity under the 2007 Plan as of December 31, 2013 and changes during the year is as follows:

				Weighted-Average
	Shares			Exercise Price
Outstanding at January 1, 2013		1,886,615		$	29.76
Granted		556,107		$	39.73
Exercised		(497,652	)	$	29.49
Expired or forfeited		(201,312	)	$	29.91
Outstanding at December 31, 2013		1,743,758		$	33.00
Vested or expected to vest as of end of year		1,480,261		$	32.83
Exercisable at end of year		381,310		$	29.57

The cash-settled SARs vest over a one to four year period. Upon exercise of the cash-settled SARs, the employee is entitled to receive cash payment for the appreciation in the value of our common stock over the exercise price. We account for the cash-settled SARs as liability awards, which require the awards to be revalued at each reporting period. For the year ended December 31, 2013, 497,652 cash-settled SARs were exercised resulting in $6.5 million in cash payments. During each of the years ended

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December 31, 2012 and 2011, we made cash payments related to cash-settled SARs of $0.1 million. As of December 31, 2013, there was $10.2 million of total unrecognized compensation cost related to cash-settled SARs outstanding. The weighted-average period over which this unrecognized expense is expected to be recognized is 2.4 years. Aggregate intrinsic value of the cash-settled SARs at December 31, 2013 was $23.5 million. The liability for cash-settled SARs was $19.4 million at December 31, 2013.

Included in the total shares outstanding at December 31, 2013 are 30,510 restricted shares, 556,107 cash-settled SARs and 230,037 stock-settled SARs whose vesting is contingent on the employee meeting defined performance conditions. Employees have a specified time period in which to meet the performance condition (typically one year) and forfeit the grant (on a pro rata basis) if the performance conditions are not met in the specified time frame. We evaluate the likelihood of the employee completing the performance condition and include this estimate in the determination of the forfeiture factor for the grants.

We have granted to certain key employees restricted share units, which provide the employee with the economic equivalent of stock ownership. Each restricted share unit is valued at the closing price of our common stock on the national exchange on which it is listed as of the date credited, and fluctuates daily thereafter. The restricted share units outstanding under this plan vest over a 24 to 48 month period, subject to continued employment. Upon vesting, the employee receives a cash payment equivalent to the number of restricted share units vested valued at the closing market price of our common shares. Total expense recognized for the restricted share units totaled $0.9 million, $0.6 million and $0.7 million for the years ended December 31, 2013, 2012 and 2011, respectively. Cash payments paid for vested awards under this plan totaled $1.2 million and $0.7 million for the years ended December 31, 2013 and 2012, respectively.

Employees Share Purchase Plans

Argo Group has established an employee stock purchase plan for eligible employees (Argo Group’s 2007 Employee Share Purchase Plan). Under this plan, shares of Argo Group common stock may be purchased over an offering period of three months at 85% of the lower of the market value on the first day of the offering period or on the designated purchase date at the end of the offering period. Argo Group has also established a Save As You Earn Plan for its United Kingdom employees (Argo Group’s Save As You Earn Plan). Under this plan, shares of Argo Group common stock may be purchased over an offering period of three or five years at 85% of the market value of the common shares on the first day of the offering period. Expense recognized under these plans for the years ended December 31, 2013, 2012 and 2011 was $0.3 million, $0.2 million and $0.1 million, respectively.

Argo Group International Holdings, Ltd. Deferred Compensation Plan for Non-Employee Directors

Until December 16, 2013, the non-employee members of our Board of Directors were entitled to participate in the Argo Group International Holdings, Ltd. Deferred Compensation Plan for Non-Employee Directors (“Directors Plan”), a non-funded and non-qualified deferred compensation plan. Under the Directors Plan, non-employee directors could elect each year to defer payment of 0%, 50% or 100% of their cash compensation payable during the next calendar year. While no further deferrals will be permitted under the Directors Plan from and after December 16, 2013, and certain amounts thereunder were paid out prior to the end of 2013, additional deferred amounts remain subject to the terms of the Directors Plan and will be paid out in accordance with the terms of the Directors Plan. Deferred amounts are credited with interest earned at a rate two percent above the prime commercial lending rate, to be reset each May 1. In addition, the Directors Plan calls for us to grant a match equal to 75% of the cash compensation amounts deferred in the form of “Stock Units,” which provide directors with the economic equivalent of stock ownership and are credited as a bookkeeping entry to each director’s “Stock Unit Account.” Each Stock Unit is valued at the closing price of our common stock on the national exchange on which it is listed as of the date credited for all purposes under the Directors Plan and fluctuates daily thereafter on that same basis. The Directors Plan provided for a Stock Unit Account to be established for each non-employee director upon their election to the Board and credits their account with an initial bookkeeping entry for 1,650 Stock Units. In conjunction with the termination of the Directors Plan during the year ended December 31, 2013, all cash balances for the years 2010 through 2013 and related interest were settled resulting in $1.9 million in cash payments. Remaining distributions from the Directors Plan will occur six months after the non-employee director ceases to be a member of the Board, the date on which a change in control (as defined in the Directors Plan) occurs or December 1, 2017, whichever comes first, and will be made in cash. The non-employee directors are responsible for all tax requirements on the deferred compensation and any related earnings. Under the Directors Plan, we recorded compensation expense of $2.0 million, $1.2 million and $0.6 million for the years ended December 31, 2013, 2012 and 2011, respectively. The liability for remaining distributions under the Directors Plan was $3.5 million at December 31, 2013.

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Argonaut Group’s Amended and Restated Stock Incentive Plan

The historical Argonaut Group’s Amended and Restated Stock Incentive Plan, which was frozen in August 2007 (the “Amended Plan”), provided for an aggregate of up to 6,250,000 shares of our common stock that may be issued to certain executives and other key employees. The stock awards were issued in the form of non-qualified stock options and non-vested stock. Grants under the Amended Plan have a legal life of seven to eleven years. As of December 31, 2013, all awards under this plan were fully vested.

A summary of option activity under the Amended Plan as of December 31, 2013 and changes during the year is as follows:

						Weighted-Average		Aggregate
				Weighted-Average		Remaining		Intrinsic
	Shares			Exercise Price		Contractual Term		Value
Outstanding at January 1, 2013		210,097		$	34.42
Granted		0		$	0.00
Exercised		(127,974	)	$	29.32
Expired or forfeited		(41,814	)	$	48.01
Outstanding at December 31, 2013		40,309		$	36.49		0.6	$	403,237
Vested and exercisable at end of year		40,309		$	36.49		0.6	$	403,237

The aggregate intrinsic value is calculated as the difference between the exercise price of the underlying awards and the quoted price of our common stock for those options where the exercise price was below the quoted price at December 31, 2013. Total intrinsic value of options exercised during the years ended December 31, 2013, 2012 and 2011 were $0.8 million, $0.2 million and $0.1 million, respectively.

For the year ended December 31, 2013, we received cash payments of $3.5 million (net of any related tax payments) related to the settlement of stock options exercised under the Amended Plan.

16. Segment Information

We are primarily engaged in underwriting property and casualty insurance and reinsurance. We have four ongoing reporting segments: Excess and Surplus Lines, Commercial Specialty, International Specialty and Syndicate 1200. Additionally, we have a Run-off Lines segment for certain products that we no longer write.

We consider many factors, including the nature of each segment’s insurance and reinsurance products, production sources, distribution strategies and the regulatory environment, in determining how to aggregate reporting segments.

In evaluating the operating performance of our segments, we focus on core underwriting and investing results before the consideration of realized gains or losses from the sales of investments. Intersegment transactions are allocated to the segment that initiated the transaction. Realized investment and other gains are reported as a component of the Corporate and Other segment, as decisions regarding the acquisition and disposal of securities reside with the investment function and are not under the control of the individual business segments. Identifiable assets by segment are those assets used in the operation of each segment.

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Revenue and income (loss) before income taxes for each segment for the years ended December 31 were as follows:

(in millions)	2013			2012		2011
Revenue:
Earned premiums
Excess and Surplus Lines	$	460.2		$	399.3	$	405.3
Commercial Specialty		299.0			317.5		316.7
International Specialty		142.4			130.1		101.3
Syndicate 1200		401.7			337.9		259.3
Run-off Lines		0.5			1.7		(0.6	)
Total earned premiums		1,303.8			1,186.5		1,082.0
Net investment income
Excess and Surplus Lines		42.2			51.1		56.0
Commercial Specialty		22.8			27.6		27.7
International Specialty		8.4			12.3		10.9
Syndicate 1200		11.0			15.3		17.2
Run-off Lines		10.8			12.5		13.3
Corporate and Other		4.8			0.0		0.7
Total net investment income		100.0			118.8		125.8
Fee (expense) income, net		(4.9	)		5.3		1.4
Net realized investment and other gains		71.3			25.7		49.2
Total revenue	$	1,470.2		$	1,336.3	$	1,258.4

(in millions)	2013			2012			2011
Income (loss) before income taxes
Excess and Surplus Lines	$	89.4		$	74.1		$	65.9
Commercial Specialty		21.4			(24.8	)		(3.6	)
International Specialty		11.3			11.3			(70.9	)
Syndicate 1200		37.3			28.1			(67.0	)
Run-off Lines		(10.6	)		(0.9	)		(5.3	)
Total segment income (loss) before taxes		148.8			87.8			(80.9	)
Corporate and Other		(40.4	)		(46.8	)		(30.2	)
Net realized investment and other gains		71.3			25.7			49.2
Total income (loss) before income taxes	$	179.7		$	66.7		$	(61.9	)

The table below presents earned premiums by geographic location for the years ended December 31. For this disclosure, we determine geographic location by the country of domicile of our subsidiaries that write the business and not by the location of insureds or reinsureds from whom the business was generated.

(in millions)	2013		2012		2011
Bermuda	$	101.7	$	120.4	$	101.5
Brazil		38.7		26.6		0.0
Malta		1.8		0.3		0.0
United Kingdom		401.7		320.8		259.3
United States		759.9		718.4		721.2
Total earned premiums	$	1,303.8	$	1,186.5	$	1,082.0

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The following table represents identifiable assets as of December 31:

	December 31,
(in millions)	2013		2012
Excess and Surplus Lines	$	2,252.2	$	2,206.7
Commercial Specialty		1,333.4		1,337.7
International Specialty		743.6		731.8
Syndicate 1200		1,638.8		1,811.4
Run-off Lines		555.9		516.5
Corporate and Other		67.1		84.8
Total	$	6,591.0	$	6,688.9

Included in total assets at December 31, 2013 and 2012 are $386.8 million and $505.7 million, respectively, in assets associated with trade capital providers.

The following table represents goodwill and intangible assets, net of accumulated amortization as of December 31:

					Intangible Assets, Net of
	Goodwill				Accumulated Amortization
(in millions)	2013		2012		2013		2012
Excess and Surplus Lines	$	76.4	$	76.4	$	3.4	$	4.0
Commercial Specialty		48.7		48.7		9.0		10.4
Syndicate 1200		28.7		28.7		73.6		77.1
Total	$	153.8	$	153.8	$	86.0	$	91.5

17. Run-off Lines

We have discontinued active underwriting of certain lines of business, including those lines that were previously recorded in Argonaut Group’s Risk Management segment. All current activity within these lines is related to the management of claims and other administrative functions. Also included in Run-off Lines are other liability reserves, which include exposure to claims for asbestos and environmental liabilities written in past years. The other liability reserves are often characterized by long elapsed periods between the occurrence of a claim and ultimate payment to resolve the claim. We use a specialized staff dedicated to administer and settle these claims.

The following table presents our gross reserves for Run-off Lines as of December 31:

(in millions)	2013		2012
Asbestos and Environmental:
Reinsurance assumed	$	45.2	$	52.2
Other		12.3		12.4
Total Asbestos and Environmental		57.5		64.6
Risk management		264.3		272.6
Run-off reinsurance lines		5.8		14.4
Other run-off lines		4.9		6.7
Total Run-off Lines	$	332.5	$	358.3

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We have received asbestos and environmental liability claims arising from other liability coverage primarily written in the 1960s, 1970s and into the mid-1980s. Asbestos and environmental claims originate from policies directly written by us and from reinsurance assumed during this period, including a portion assumed from the London market. The following table represents the total gross reserves for our asbestos exposure as of December 31:

(in millions)	2013		2012		2011
Direct written
Case reserves	$	1.7	$	2.0	$	2.8
Unallocated loss adjustment expense (“ULAE”)		1.3		1.7		2.0
Incurred but not reported (“IBNR”)		6.4		4.3		2.5
Total direct written reserves		9.4		8.0		7.3
Assumed domestic
Case reserves		15.7		18.4		21.7
ULAE		2.2		2.7		3.1
IBNR		15.8		17.4		19.7
Total assumed domestic reserves		33.7		38.5		44.5
Assumed London
Case reserves		5.8		5.9		6.2
ULAE		0.4		0.6		0.7
IBNR		1.4		2.5		4.0
Total assumed London reserves		7.6		9.0		10.9
Total asbestos reserves	$	50.7	$	55.5	$	62.7

The following table presents our net underwriting results for Run-off Lines for the three years ended December 31:

(in millions)	2013			2012			2011
Asbestos and Environmental:
Reinsurance assumed	$	(3.8	)	$	(3.6	)	$	(6.7	)
Other		(7.2	)		(5.5	)		(5.0	)
Total Asbestos and Environmental		(11.0	)		(9.1	)		(11.7	)
Risk management		(5.9	)		0.9			2.6
Run-off reinsurance lines		(1.9	)		(1.1	)		(5.5	)
Other run-off lines		(0.8	)		(1.6	)		(2.2	)
Total Run-off Lines	$	(19.6	)	$	(10.9	)	$	(16.8	)

Reserves for asbestos and environmental claims cannot be estimated with traditional loss reserving techniques that rely on historical accident year loss development factors. The uncertainty in the asbestos and environmental reserves estimates arises from several factors including lack of historical data, inapplicability of standard actuarial projection techniques, uncertainty with regards to claim costs, coverage interpretations and judicial, statutory and regulatory provisions under which the claims may be ultimately resolved. It is impossible to predict how the courts will interpret coverage issues and these resolutions may have a material impact on the ultimate resolution of the asbestos and environmental liabilities. We use a variety of estimation methods to calculate reserves as a whole; however, reserves for asbestos and environmental claims were determined primarily based on the report year method with some weight applied to other methods. The report year method relies most heavily on our historical claims and severity information. Other methods rely more heavily on industry information. Although management has recorded its best estimate of loss reserves, due to the uncertainties of estimation of liabilities that may arise as discussed herein, further deterioration of claims could occur in the future.

Please see Note 5, “Reserves for Losses and Loss Adjustment Expenses” for further discussion.

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18. Commitments and Contingencies

Argo Group’s subsidiaries are parties to legal actions incidental to their business. Based on the opinion of counsel, management believes that the resolution of these matters will not materially affect our financial condition or results of operations.

Argo Group has contractual commitments to invest up to $35.7 million related to its limited partnership investments at December 31, 2013. These commitments will be funded as required by the partnership agreements.

19. Leases

We lease office space and equipment under lease agreements that expire at various intervals and are subject to renewal options at market rates prevailing at the time of renewal. At December 31, 2013, the future minimum payments under non-cancelable operating leases are as follows:

(in millions)	Amount Due
2014	$	11.1
2015		10.8
2016		8.5
2017		7.5
2018		5.9
Thereafter		13.8
Total	$	57.6

20. Statutory Accounting Principles

Financial Information

The statutory capital and surplus for our principal operating subsidiaries at December 31, 2013 and 2012 was as follows:

Statutory capital and surplus (1)	December 31,
(in millions)	2013		2012
Bermuda	$	1,218.2	$	1,180.1
United Kingdom (2)		225.8		227.7
United States		822.3		781.3

⁽¹⁾  Such amounts include ownership interests in affiliate insurance and reinsurance subsidiaries.

⁽²⁾  Capital on deposit with Lloyd’s in U.S. Dollars

The statutory net income (loss) for our principal operating subsidiaries for 2013, 2012 and 2011 was as follows:

Statutory net income (loss) (1)	For the Years Ended December 31,
(in millions)	2013		2012			2011
Bermuda	$	85.1	$	(4.2	)	$	(47.7	)
United Kingdom (2)		42.3		40.7			(63.4	)
United States		117.4		42.9			67.0

⁽¹⁾  Such amounts include ownership interests in affiliate insurance and reinsurance subsidiaries.

⁽²⁾  In U.S. Dollars

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Dividends

As an insurance and reinsurance holding company, Argo Group is largely dependent on dividends and other permitted payments from its insurance and reinsurance subsidiaries to pay cash dividends to its shareholders, for debt service and for its operating expenses. The ability of Argo Group’s insurance and reinsurance subsidiaries to pay dividends to Argo Group is subject to certain restrictions imposed by the jurisdictions of domicile that regulate our insurance and reinsurance subsidiaries and each jurisdiction has calculations for the amount of dividends that an insurance and reinsurance company can pay without the approval of the insurance regulator.

The payment of dividends to Argo Group’s shareholders is governed by the Bermuda Companies Act of 1981, as amended, which permits the payment of dividends so long as (i) the Company is not, or would not after the payment, be unable to pay its liabilities as they become due or (ii) the realizable value of the Company’s assets is in excess of its liabilities after taking such payment into account. In light of these restrictions, we have no additional material restrictions on dividend payments that may be made to our shareholders at December 31, 2013.

Argo Re is the direct subsidiary of Argo Group, and therefore, has direct dividend paying capabilities to the parent. As of December 31, 2013, Argo Re’s solvency and liquidity margins and statutory capital and surplus were in excess of the minimum levels required by the Insurance Act. As of December 31, 2013 and 2012, the minimum statutory capital and surplus required to be maintained by Argo Re was $343.9 million and $312.5 million, respectively.

Argo Re is generally prohibited from declaring or paying, in any financial year, dividends of more than 25% of its total statutory capital and surplus (as shown on its previous financial year’s statutory balance sheet) unless it files (at least seven days before payment of such dividends) with the BMA an affidavit signed by at least two directors (one of whom must be a Bermuda resident director if any of the insurer’s directors are resident in Bermuda) and the principal representative stating that it will continue to meet its solvency margin and minimum liquidity ratio. Argo Re may not reduce its total statutory capital by 15% or more, as set out in its previous year’s financial statements, unless it has received the prior approval of the BMA. Based on these regulatory restrictions, the maximum amount available for payment of dividends to Argo Group by Argo Re during 2014 without prior regulatory approval is $304.5 million.

In 2013 and 2011, Argo Re paid cash dividends of $84.5 million and $100.0 million, respectively, to Argo Group which were used to repay intercompany notes and receivables in 2013, and repay intercompany notes in 2011. Argo Re did not pay dividends to Argo Group in 2012.

Our U.S. insurance subsidiaries file financial statements prepared in accordance with statutory accounting principles prescribed or permitted by insurance regulatory authorities of the state in which they are domiciled. The differences between statutory-based financial statements and financial statements prepared in accordance with GAAP vary between jurisdictions. The principal differences are that for statutory-based financial statements, deferred policy acquisition costs are not recognized, a portion of the deferred federal income tax asset is recorded, bonds are generally carried at amortized cost, certain assets are non-admitted and charged directly to surplus, a collectability allowance related to reinsurance recoverables are charged directly to surplus and outstanding losses and unearned premium are presented net of reinsurance.

As an intermediate insurance holding company, Argo Group US is largely dependent on dividends and other permitted payments from its insurance subsidiaries to service its debt, fund operating expenses and pay dividends to Argo Ireland. Various state insurance laws restrict the amount that may be transferred to Argo Group US from its subsidiaries in the form of dividends without prior approval of regulatory authorities. In addition, that portion of the insurance subsidiaries’ net equity that results from the difference between statutory insurance principles and GAAP would not be available for dividends.

In December 2013, Argo Group US received an ordinary dividend in the amount of $9.5 million in cash from Rockwood, an ordinary dividend in the amount of $24.8 million, in the form of $0.1 million in cash and $24.7 million in the form of securities, from Argonaut Insurance Company, and an extraordinary dividend of $76.2 million, in the form of $0.3 million in cash and $75.9 million in the form of securities, from Colony Insurance Company (“Colony”).

In September 2012, Argo Group US received an ordinary dividend in the amount of $10.0 million in cash from Rockwood and an ordinary dividend of $59.0 million, in the form of securities, from Colony.

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In June 2011, Argo Group US received an extraordinary dividend in the amount of $30.0 million in cash from Rockwood. In December 2011, Argo Group US received an extraordinary dividend of $99.4 million, in the form of $48.1 million in cash and $51.3 million in securities, from Colony.

Argonaut Insurance Company is a direct subsidiary of Argo Group US and is regulated by the Illinois Division of Insurance. During 2014, based on the state of domicile’s ordinary dividend calculation, Argonaut Insurance Company may be permitted to pay dividends of up to $24.8 million without approval from the Illinois Division of Insurance. Colony, a direct subsidiary of Argo Group US, is regulated by the Virginia Bureau of Insurance. Colony may be permitted to pay dividends of up to $41.5 million without approval from the Virginia Department of Insurance during 2014. Rockwood, a direct subsidiary of Argo Group US, is regulated by the Pennsylvania Department of Insurance. Rockwood may be permitted to pay dividends of up to $18.1 million without approval from the Pennsylvania Department of Insurance during 2014. Each department of insurance may require prior approval for the payment of all dividends, based on business and regulatory conditions of the insurance companies.

Dividend payments from Argo International to its immediate parent are not restricted by regulatory authority. Dividend payments will be at the discretion of Argo International’s Board of Directors and will be subject to the earnings, operations, financial condition, capital and general business requirements of Argo International.

Certain assets of our subsidiaries are pledged to regulatory agencies, serve as collateral for letters of credit or are assigned as the assets of the trade capital providers of our Lloyd’s syndicate, and therefore, are not available funds that may be paid up as dividends to Argo Group. See Note 2, “Investments” and Note 16, “Segment Information” for further discussion.

21. Disclosures about Fair Value of Financial Instruments

Cash. The carrying amount approximates fair value.

Investment securities and short-term investments. See Note 2, “Investments,” for additional information.

Premiums receivable and reinsurance recoverables on paid losses. The carrying value of current receivables approximates fair value. At December 31, 2013 and 2012, the carrying values of premiums receivable over 90 days were $9.8 million and $24.3 million, respectively. Included in “Reinsurance recoverables” in our Consolidated Balance Sheets at December 31, 2013 and 2012, are amounts that are due from third party trade capital providers associated with the operations of Argo International. Upon settlement, the receivable is offset against the liability also reflected in our accompanying Consolidated Balance Sheets. At December 31, 2013 and 2012, the payable was in excess of the receivable. Of our reinsurance recoverables on paid losses, excluding amounts attributable to Argo International’s third party trade capital providers, at December 31, 2013 and 2012, the carrying values over 90 days were $22.2 million and $18.0 million, respectively. Our methodology for establishing our allowances for doubtful accounts includes specifically identifying all potential uncollectible balances regardless of aging. Any of the over 90 day balances, where collectability was deemed questionable, have been included in the allowances. At December 31, 2013 and 2012, the allowance for doubtful accounts for premiums receivable was $4.5 million and $2.5 million, respectively, and the allowance for doubtful accounts for reinsurance recoverables on paid losses was $1.6 million and $2.2 million, respectively. Premiums receivable over 90 days were secured by collateral in the amount of $0.4 million at December 31, 2013 and 2012. Reinsurance recoverables on paid losses over 90 days were secured by collateral in the amount of $0.3 million at December 31, 2013 and 2012.

At December 31, 2013 and 2012, the fair value of our Junior subordinated debentures, Senior unsecured fixed rate notes and Other indebtedness was estimated using appropriate market indices or quoted prices from external sources based on current market conditions.

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A summary of our financial instruments whose carrying value did not equal fair value at December 31, 2013 and 2012 is shown below:

	December 31, 2013				December 31, 2012
(in millions)	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Junior subordinated debentures	$	193.3	$	155.5	$	193.3	$	151.8
Senior unsecured fixed rate notes		143.8		116.2		143.8		143.2
Other indebtedness:
Floating rate loan stock		65.5		52.7		63.0		49.5
Note payable		0.8		0.6		0.8		0.6
	$	403.4	$	325.0	$	400.9	$	345.1

22. Insurance Assessments

We are required to participate in statutorily created insolvency guarantee and weather-related loss protection associations in all states in the U.S. where we are authorized to transact business. These associations were formed for the purpose of paying the claims of insolvent companies. We are assessed a pro-rata share of such claims based upon our premium writings, subject to a maximum annual assessment per line of insurance. Certain of these assessments can be recovered through premium tax offsets or policy surcharges. We do not believe that assessments on current insolvencies will have a material impact on our financial condition or results of operations. We have accrued assessments of $16.6 million and $16.4 million at December 31, 2013 and 2012, respectively.

23. Transactions with Related Parties

In 2013, our Surety unit received a submission through its established broker network to issue approximately $13 million of surety bonds on behalf of Kinetica Partners, LLC (“Kinetica”) in connection with a Gulf of Mexico pipeline project. Mr. Gary Woods, Chairman of our Board of Directors, is the President of Kinetica, and beneficially owns 10% of Kinetica through a family trust. The submission was underwritten, priced and bound in the ordinary course of business by the Surety unit. The terms and conditions of the surety bonds that were issued and the premium charged to Kinetica for issuance of the bonds, were consistent with those routinely applied and charged for similarly situated risks bound for unrelated third parties. Per the Surety unit’s standard requirements in connection with the issuance of surety bonds, Kinetica and Mr. Woods, in his personal capacity, among others, executed our Surety unit’s standard form of indemnity agreement holding our Surety unit harmless against any and all losses and expenses incurred resulting from the issuance of the surety bonds.

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24. Quarterly Financial Data—Unaudited

The following tables represent unaudited quarterly financial data for the years ended December 31, 2013 and 2012. In the opinion of management, all adjustments necessary to present fairly the results of operations for such periods have been made. Total revenue, net income (loss) before income taxes and net income (loss) include realized gains or losses on the sale of investments and other. We cannot anticipate when or if similar gains or losses may occur in the future. Since financial results rely heavily on estimates, caution should be used in drawing specific conclusions from quarterly consolidated results.

(in millions, except per share amounts)	1st Quarter		2nd Quarter			3rd Quarter		4th Quarter			Year
2013
Total revenue	$	341.6	$	364.0		$	364.0	$	400.6		$	1,470.2
Net income before income taxes		37.5		42.8			32.9		66.5			179.7
Net income		32.7		31.7			31.0		47.8			143.2
Net income per common share
Basic*	$	1.20	$	1.18		$	1.17	$	1.80		$	5.33
Diluted*	$	1.16	$	1.13		$	1.12	$	1.74		$	5.14
Comprehensive income (loss)	$	45.7	$	(35.2	)	$	47.2	$	43.8		$	101.5
(in millions, except per share amounts)	1st Quarter		2nd Quarter			3rd Quarter		4th Quarter			Year
2012
Total revenue	$	323.1	$	318.0		$	344.5	$	350.7		$	1,336.3
Net income (loss) before income taxes		28.1		25.0			17.7		(4.1	)		66.7
Net income (loss)		19.6		24.0			13.4		(4.7	)		52.3
Net income (loss) per common share
Basic*	$	0.68	$	0.85		$	0.48	$	(0.17	)	$	1.86
Diluted*	$	0.67	$	0.84		$	0.47	$	(0.17	)	$	1.83
Comprehensive income (loss)	$	55.1	$	6.2		$	60.0	$	(19.3	)	$	102.0

* Basic and diluted net income per common share are computed independently for each quarter and full year based on the respective average number of common shares outstanding; therefore, the sum of the quarterly net income per common share data may not equal the net income per common share for the year.

25. Information Provided in Connection with Outstanding Debt of Subsidiaries

The following tables present condensed consolidating financial information at December 31, 2013 and 2012 and for the three years ended December 31, 2013, 2012 and 2011, for Argo Group (the “Parent Guarantor”) and Argo Group US (the “Subsidiary Issuer”). The Subsidiary Issuer is an indirect 100 percent-owned subsidiary of the Parent Guarantor. Investments in subsidiaries are accounted for by the Parent Guarantor under the equity method for purposes of the supplemental consolidating presentation. Earnings of subsidiaries are reflected in the Parent Guarantor’s investment accounts and earnings. The Parent Guarantor fully and unconditionally guarantees certain of the debt of the Subsidiary Issuer. Condensed consolidating financial information of the Subsidiary Issuer is presented on a consolidated basis and consists principally of the net assets, results of operations and cash flows of operating insurance company subsidiaries.

F-51

CONDENSED CONSOLIDATING BALANCE SHEET

December 31, 2013

(in millions)

	Argo Group International Holdings, Ltd (Parent Guarantor)		Argo Group US, Inc. and Subsidiaries (Subsidiary Issuer)		Other Subsidiaries and Eliminations (1)			Consolidating Adjustments  (2)			Total
Assets
Investments	$	1.1	$	2,785.1	$	1,293.0		$	0.0		$	4,079.2
Cash		0.0		132.1		25.3			0.0			157.4
Accrued investment income		0.0		19.7		6.0			0.0			25.7
Premiums receivable		0.0		150.8		197.6			0.0			348.4
Reinsurance recoverables		0.0		1,145.9		117.6			0.0			1,263.5
Goodwill and other intangible assets, net		0.0		137.4		102.4			0.0			239.8
Current income taxes receivable, net		0.0		0.5		(0.5	)		0.0			0.0
Deferred acquisition costs, net		0.0		55.6		58.3			0.0			113.9
Ceded unearned premiums		0.0		88.2		108.1			0.0			196.3
Other assets		4.6		97.8		64.4			0.0			166.8
Due from affiliates		3.1		1.5		(1.5	)		(3.1	)		0.0
Intercompany note receivable		0.0		87.4		(87.4	)		0.0			0.0
Investments in subsidiaries		1,625.2		0.0		0.0			(1,625.2	)		0.0
Total assets	$	1,634.0	$	4,702.0	$	1,883.3		$	(1,628.3	)	$	6,591.0
Liabilities and Shareholders’ Equity
Reserves for losses and loss adjustment expenses	$	0.0	$	2,157.0	$	1,073.3		$	0.0		$	3,230.3
Unearned premiums		0.0		425.5		353.6			0.0			779.1
Funds held and ceded reinsurance payable, net		0.0		642.4		(244.0	)		0.0			398.4
Long-term debt		49.0		288.9		65.5			0.0			403.4
Current income taxes payable, net		0.0		8.9		(3.7	)		0.0			5.2
Deferred tax liabilities, net		0.0		22.8		5.9			0.0			28.7
Accrued underwriting expenses and other liabilities		15.4		98.2		69.3			0.0			182.9
Intercompany note payable		6.6		0.0		0.0			(6.6	)		0.0
Total liabilities		71.0		3,643.7		1,319.9			(6.6	)		5,028.0
Total shareholders’ equity		1,563.0		1,058.3		563.4			(1,621.7	)		1,563.0
Total liabilities and shareholders’ equity	$	1,634.0	$	4,702.0	$	1,883.3		$	(1,628.3	)	$	6,591.0

⁽¹⁾  Includes all other subsidiaries of Argo Group International Holdings, Ltd and all intercompany eliminations

⁽²⁾  Includes all Argo Group parent company eliminations

F-52

CONDENSED CONSOLIDATING BALANCE SHEET

December 31, 2012

(in millions)

	Argo Group International Holdings, Ltd (Parent Guarantor)			Argo Group US, Inc. and Subsidiaries (Subsidiary Issuer)		Other Subsidiaries and Eliminations (1)			Consolidating Adjustments  (2)			Total
Assets
Investments	$	(0.9	)	$	2,794.7	$	1,406.9		$	0.0		$	4,200.7
Cash		0.0			73.9		21.9			0.0			95.8
Accrued investment income		0.0			21.3		9.0			0.0			30.3
Premiums receivable		0.0			155.1		205.9			0.0			361.0
Reinsurance recoverables		0.0			1,155.1		165.8			0.0			1,320.9
Goodwill and other intangible assets, net		0.0			139.5		105.8			0.0			245.3
Current income taxes receivable, net		0.0			8.7		4.2			0.0			12.9
Deferred acquisition costs, net		0.0			54.6		44.8			0.0			99.4
Ceded unearned premiums		0.0			85.9		107.7			0.0			193.6
Other assets		4.3			82.7		42.0			0.0			129.0
Due from affiliates		5.0			1.2		(1.2	)		(5.0	)		0.0
Intercompany note receivable		0.0			119.6		(119.6	)		0.0			0.0
Investments in subsidiaries		1,621.1			0.0		0.0			(1,621.1	)		0.0
Total assets	$	1,629.5		$	4,692.3	$	1,993.2		$	(1,626.1	)	$	6,688.9
Liabilities and Shareholders’ Equity
Reserves for losses and loss adjustment expenses	$	0.0		$	2,226.3	$	997.2		$	0.0		$	3,223.5
Unearned premiums		0.0			415.6		314.6			0.0			730.2
Funds held and ceded reinsurance payable, net		0.0			598.4		47.4			0.0			645.8
Long-term debt		49.0			288.9		63.0			0.0			400.9
Deferred tax liabilities, net		0.0			36.8		7.0			0.0			43.8
Accrued underwriting expenses and other liabilities		11.3			84.1		35.2			0.0			130.6
Intercompany note payable		55.1			0.0		0.0			(55.1	)		0.0
Total liabilities		115.4			3,650.1		1,464.4			(55.1	)		5,174.8
Total shareholders’ equity		1,514.1			1,042.2		528.8			(1,571.0	)		1,514.1
Total liabilities and shareholders’ equity	$	1,629.5		$	4,692.3	$	1,993.2		$	(1,626.1	)	$	6,688.9

⁽¹⁾  Includes all other subsidiaries of Argo Group International Holdings, Ltd and all intercompany eliminations

⁽²⁾  Includes all Argo Group parent company eliminations

CONDENSED CONSOLIDATING STATEMENT OF INCOME

FOR THE YEAR ENDED DECEMBER 31, 2013

(in millions)

	Argo  Group International Holdings, Ltd (Parent Guarantor)		Argo Group US, Inc. and Subsidiaries (Subsidiary Issuer)			Other Subsidiaries and Eliminations (1)			Consolidating Adjustments  (2)			Total
Premiums and other revenue:
Earned premiums	$	0.0	$	439.9		$	863.9		$	0.0		$	1,303.8
Net investment income (expense)		84.5		73.4			(57.9	)		0.0			100.0
Fee (expense) income, net		0.0		(4.1	)		(0.8	)		0.0			(4.9	)
Net realized investment and other gains (losses)		0.0		72.2			(0.9	)		0.0			71.3
Total revenue		84.5		581.4			804.3			0.0			1,470.2
Expenses:
Losses and loss adjustment expenses		0.0		268.6			473.4			0.0			742.0
Other reinsurance-related expenses		0.0		0.0			19.2			0.0			19.2
Underwriting, acquisition and insurance expenses		27.4		176.9			306.5			0.0			510.8
Interest expense		3.3		15.2			2.9			(1.2	)		20.2
Foreign currency exchange gain		0.0		(0.3	)		(1.4	)		0.0			(1.7	)
Total expenses		30.7		460.4			800.6			(1.2	)		1,290.5
Income before income taxes		53.8		121.0			3.7			1.2			179.7
Provision for income taxes		0.0		34.1			2.4			0.0			36.5
Net income before equity in earnings of subsidiaries		53.8		86.9			1.3			1.2			143.2
Equity in undistributed earnings of subsidiaries		89.4		0.0			0.0			(89.4	)		0.0
Net income	$	143.2	$	86.9		$	1.3		$	(88.2	)	$	143.2

⁽¹⁾  Includes all other subsidiaries of Argo Group International Holdings, Ltd. and all intercompany eliminations

⁽²⁾  Includes all Argo Group parent company eliminations

F-53

CONDENSED CONSOLIDATING STATEMENT OF INCOME

FOR THE YEAR ENDED DECEMBER 31, 2012

(in millions)

	Argo Group International Holdings, Ltd (Parent Guarantor)			Argo Group US, Inc. and Subsidiaries (Subsidiary Issuer)		Other Subsidiaries and Eliminations (1)		Consolidating Adjustments  (2)			Total
Premiums and other revenue:
Earned premiums	$	0.0		$	434.2	$	752.3	$	0.0		$	1,186.5
Net investment income		0.1			86.6		32.1		0.0			118.8
Fee income, net		0.0			1.3		4.0		0.0			5.3
Net realized investment and other (losses) gains		(0.8	)		19.5		7.0		0.0			25.7
Total revenue		(0.7	)		541.6		795.4		0.0			1,336.3
Expenses:
Losses and loss adjustment expenses		0.0			300.6		447.0		0.0			747.6
Other reinsurance-related expenses		0.0			0.0		27.3		0.0			27.3
Underwriting, acquisition and insurance expenses		27.1			169.8		267.6		0.0			464.5
Interest expense		3.9			17.1		3.0		(0.3	)		23.7
Debt extinguishment costs		0.1			2.1		0.0		0.0			2.2
Foreign currency exchange loss		0.0			0.0		4.3		0.0			4.3
Total expenses		31.1			489.6		749.2		(0.3	)		1,269.6
(Loss) income before income taxes		(31.8	)		52.0		46.2		0.3			66.7
Provision for income taxes		0.0			11.1		3.3		0.0			14.4
Net (loss) income before equity in earnings of subsidiaries		(31.8	)		40.9		42.9		0.3			52.3
Equity in undistributed earnings of subsidiaries		84.1			0.0		0.0		(84.1	)		0.0
Net income	$	52.3		$	40.9	$	42.9	$	(83.8	)	$	52.3

⁽¹⁾  Includes all other subsidiaries of Argo Group International Holdings, Ltd. and all intercompany eliminations

⁽²⁾  Includes all Argo Group parent company eliminations

CONDENSED CONSOLIDATING STATEMENT OF (LOSS) INCOME

FOR THE YEAR ENDED DECEMBER 31, 2011

(in millions)

	Argo Group International Holdings, Ltd (Parent Guarantor)			Argo Group US, Inc. and Subsidiaries (Subsidiary Issuer)		Other Subsidiaries and Eliminations (1)			Consolidating Adjustments  (2)			Total
Premiums and other revenue:
Earned premiums	$	0.0		$	440.7	$	641.3		$	0.0		$	1,082.0
Net investment income(3)		100.1			88.9		36.8			(100.0	)		125.8
Fee income, net		0.0			0.1		1.3			0.0			1.4
Net realized investment and other gains		0.0			36.9		12.3			0.0			49.2
Total revenue		100.1			566.6		691.7			(100.0	)		1,258.4
Expenses:
Losses and loss adjustment expenses		0.0			290.0		573.1			0.0			863.1
Other reinsurance-related expenses		0.0			0.0		5.9			0.0			5.9
Underwriting, acquisition and insurance expenses		22.6			161.5		241.6			0.0			425.7
Interest expense		5.4			15.5		1.2			0.0			22.1
Foreign currency exchange loss		0.0			0.0		3.5			0.0			3.5
Total expenses		28.0			467.0		825.3			0.0			1,320.3
Income (loss) before income taxes		72.1			99.6		(133.6	)		(100.0	)		(61.9	)
Provision (benefit) for income taxes		0.0			28.0		(8.0	)		0.0			20.0
Net income (loss) before equity in losses of subsidiaries		72.1			71.6		(125.6	)		(100.0	)		(81.9	)
Equity in undistributed losses of subsidiaries		(154.0	)		0.0		0.0			154.0			0.0
Net (loss) income	$	(81.9	)	$	71.6	$	(125.6	)	$	54.0		$	(81.9	)

⁽¹⁾  Includes all other subsidiaries of Argo Group International Holdings, Ltd. and all intercompany eliminations

⁽²⁾  Includes all Argo Group parent company eliminations

⁽³⁾  Included in net investment income for Argo Group parent is intercompany dividend activity of $100.0 million

F-54

CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS

FOR THE YEAR ENDED DECEMBER 31, 2013

(in millions)

	Argo Group International Holdings, Ltd (Parent Guarantor)			Argo Group US, Inc. and Subsidiaries (Subsidiary Issuer)			Other Subsidiaries and Eliminations (1)			Consolidating Adjustments  (2)			Total
Net cash flows from operating activities	$	63.2		$	62.5		$	(125.9	)	$	0.0		$	(0.2	)
Cash flows from investing activities:
Proceeds from sales of investments		0.0			1,130.2			836.1			0.0			1,966.3
Maturities and mandatory calls of fixed maturity investments		0.0			168.9			112.9			0.0			281.8
Purchases of investments		0.0			(1,156.7	)		(819.1	)		0.0			(1,975.8	)
Change in short-term investments and foreign regulatory deposits		(1.4	)		(119.1	)		(32.5	)		0.0			(153.0	)
Settlements of foreign currency exchange forward contracts		0.7			0.0			(4.6	)		0.0			(3.9	)
Issuance of intercompany note, net		0.0			35.0			14.3			(49.3	)		0.0
Other, net		0.0			(16.3	)		21.7			0.0			5.4
Cash (used) provided by investing activities		(0.7	)		42.0			128.8			(49.3	)		120.8
Cash flows from financing activities:
Borrowings under intercompany note, net		(49.3	)		0.0			0.0			49.3			0.0
Activity under stock incentive plans		2.6			0.0			0.0			0.0			2.6
Repurchase of Company’s common shares		0.0			(46.5	)		0.0			0.0			(46.5	)
Excess tax expense from share-based payment arrangements		0.0			0.2			0.0			0.0			0.2
Payment of cash dividend to common shareholders		(15.8	)		0.0			0.0			0.0			(15.8	)
Cash (used) provided by financing activities		(62.5	)		(46.3	)		0.0			49.3			(59.5	)
Effect of exchange rate changes on cash		0.0			0.0			0.5			0.0			0.5
Change in cash		0.0			58.2			3.4			0.0			61.6
Cash, beginning of year		0.0			73.9			21.9			0.0			95.8
Cash, end of year	$	0.0		$	132.1		$	25.3		$	0.0		$	157.4

⁽¹⁾  Includes all other subsidiaries of Argo Group International Holdings, Ltd. and all intercompany eliminations

⁽²⁾  Includes all Argo Group parent company eliminations

CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS

FOR THE YEAR ENDED DECEMBER 31, 2012

(in millions)

	Argo Group International Holdings, Ltd (Parent Guarantor)			Argo Group US, Inc. and Subsidiaries (Subsidiary Issuer)			Other Subsidiaries and Eliminations (1)			Consolidating Adjustments  (2)			Total
Net cash flows from operating activities	$	(30.2	)	$	5.5		$	55.2		$	0.0		$	30.5
Cash flows from investing activities:
Proceeds from sales of investments		0.0			573.8			556.9			0.0			1,130.7
Maturities and mandatory calls of fixed maturity investments		0.0			326.2			156.8			0.0			483.0
Purchases of investments		0.0			(889.1	)		(732.4	)		0.0			(1,621.5	)
Change in short-term investments and foreign regulatory deposits		(0.9	)		35.1			3.5			0.0			37.7
Settlements of foreign currency exchange forward contracts		2.3			0.0			(1.9	)		0.0			0.4
Issuance of intercompany note, net		0.0			(26.0	)		(29.0	)		55.0			0.0
Other, net		0.0			(29.1	)		(4.9	)		0.0			(34.0	)
Cash provided (used) by investing activities		1.4			(9.1	)		(51.0	)		55.0			(3.7	)
Cash flows from financing activities:
Borrowings under intercompany note, net		55.0			0.0			0.0			(55.0	)		0.0
Proceeds from issuance of senior unsecured fixed rate notes		0.0			138.7			0.0			0.0			138.7
Redemption of trust preferred securities, net		(15.1	)		(102.1	)		0.0			0.0			(117.2	)
Activity under stock incentive plans		1.2			0.0			0.0			0.0			1.2
Repurchase of Company’s common shares		0.0			(44.2	)		0.0			0.0			(44.2	)
Payment of cash dividend to common shareholders		(12.3	)		0.0			0.0			0.0			(12.3	)
Cash provided (used) by financing activities		28.8			(7.6	)		0.0			(55.0	)		(33.8	)
Effect of exchange rate changes on cash		0.0			0.0			0.1			0.0			0.1
Change in cash		0.0			(11.2	)		4.3			0.0			(6.9	)
Cash, beginning of year		0.0			85.1			17.6			0.0			102.7
Cash, end of year	$	0.0		$	73.9		$	21.9		$	0.0		$	95.8

⁽¹⁾  Includes all other subsidiaries of Argo Group International Holdings, Ltd. and all intercompany eliminations

⁽²⁾  Includes all Argo Group parent company eliminations

F-55

CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS

FOR THE YEAR ENDED DECEMBER 31, 2011

(in millions)

	Argo Group International Holdings, Ltd (Parent Guarantor)			Argo Group US, Inc. and Subsidiaries (Subsidiary Issuer)			Other Subsidiaries and Eliminations (1)			Consolidating Adjustments  (2)			Total
Net cash flows from operating activities	$	71.6		$	27.6		$	(16.9	)	$	(100.0	)	$	(17.7	)
Cash flows from investing activities:
Proceeds from sales of investments		0.0			869.3			501.5			0.0			1,370.8
Maturities and mandatory calls of fixed maturity investments		0.0			275.0			175.9			0.0			450.9
Purchases of investments		0.0			(1,123.5	)		(671.4	)		0.0			(1,794.9	)
Change in short-term investments and foreign regulatory deposits		0.0			61.9			8.2			0.0			70.1
Settlements of foreign currency exchange forward contracts		1.3			0.0			6.4			0.0			7.7
Issuance of intercompany note, net		0.0			(23.5	)		84.1			(60.6	)		0.0
Other, net		(0.3	)		(13.7	)		11.5			0.0			(2.5	)
Cash provided (used) by investing activities		1.0			45.5			116.2			(60.6	)		102.1
Cash flows from financing activities:
Borrowings under intercompany note, net		(60.6	)		0.0			0.0			60.6			0.0
Activity under stock incentive plans		1.1			0.0			0.0			0.0			1.1
Repurchase of Company’s common shares		0.0			(49.5	)		0.0			0.0			(49.5	)
Excess tax benefit from share-based payment arrangements		0.0			(0.1	)		0.0			0.0			(0.1	)
Payment of cash dividend to common shareholders		(13.1	)		0.0			(100.0	)		100.0			(13.1	)
Cash (used) provided by financing activities		(72.6	)		(49.6	)		(100.0	)		160.6			(61.6	)
Effect of exchange rate changes on cash		0.0			0.0			(3.6	)		0.0			(3.6	)
Change in cash		0.0			23.5			(4.3	)		0.0			19.2
Cash, beginning of year		0.0			61.6			21.9			0.0			83.5
Cash, end of year	$	0.0		$	85.1		$	17.6		$	0.0		$	102.7

⁽¹⁾  Includes all other subsidiaries of Argo Group International Holdings, Ltd. and all intercompany eliminations

⁽²⁾  Includes all Argo Group parent company eliminations

F-56

ARGO GROUP INTERNATIONAL HOLDINGS, LTD.

SCHEDULE II

CONDENSED FINANCIAL INFORMATION OF REGISTRANT

(in millions)

BALANCE SHEETS

	December 31,
	2013			2012
Assets
Other investments, unrealized loss on foreign currency exchange forward contracts	$	(1.4	)	$	(1.9	)
Short-term investments		2.5			1.0
Investment in subsidiaries		1,625.2			1,621.1
Due from subsidiaries		3.1			5.0
Other assets		4.6			4.3
Total assets	$	1,634.0		$	1,629.5
Liabilities and Shareholders’ Equity
Junior subordinated debentures	$	49.0		$	49.0
Intercompany note payable		6.6			55.1
Accrued underwriting expenses		15.4			10.8
Other liabilities		0.0			0.5
Total liabilities		71.0			115.4
Shareholders’ equity		1,563.0			1,514.1
Total liabilities and shareholders’ equity	$	1,634.0		$	1,629.5

STATEMENTS OF INCOME (LOSS)

	For the Years Ended December 31,
	2013		2012			2011
Revenue:
Net investment income (1)	$	84.5	$	0.1		$	100.1
Net realized investment losses		0.0		(0.8	)		0.0
Total revenue		84.5		(0.7	)		100.1
Expenses:
Interest expense		3.3		3.9			5.4
Debt extinguishment costs		0.0		0.1			0.0
Other expenses		27.4		27.1			22.6
Total expenses		30.7		31.1			28.0
Net income (loss) before equity in earnings (losses) of subsidiaries (2)		53.8		(31.8	)		72.1
Equity in undistributed earnings (losses) of subsidiaries		89.4		84.1			(154.0	)
Net income (loss)	$	143.2	$	52.3		$	(81.9	)

⁽¹⁾ For the year ended December 31, 2013 and 2011, net investment income includes intercompany dividend activity of $84.5 million and $100.0 million, respectively.

⁽²⁾ Argo Group International Holdings, Ltd. is not subject to taxation.

F-57

ARGO GROUP INTERNATIONAL HOLDINGS, LTD.

SCHEDULE II

CONDENSED FINANCIAL INFORMATION OF REGISTRANT

(in millions)

STATEMENTS OF CASH FLOWS

	For the Years Ended December 31,
	2013			2012			2011
Cash flows from operating activities:
Net income (loss)	$	143.2		$	52.3		$	(81.9	)
Adjustments to reconcile net income (loss) to net cash provided (used) by operating activities:
Amortization and depreciation		0.7			0.9			0.8
Share-based payments expense		8.7			4.8			2.6
Debt extinguishment costs		0.0			0.1			0.0
Undistributed (earnings) losses of subsidiaries		(89.4	)		(84.1	)		154.0
Change in:
Prepaid assets		(0.1	)		0.9			(0.8	)
Accrued underwriting expenses		(0.9	)		0.9			(1.6	)
Due to subsidiaries		0.2			(7.0	)		(3.2	)
Interest on intercompany note payable		0.8			0.3			1.7
Other assets and liabilities, net		0.0			0.7			0.0
Cash provided (used) by operating activities		63.2			(30.2	)		71.6
Cash flows from investing activities:
Change in short-term investments		(1.4	)		(0.9	)		0.0
Settlements of foreign currency exchange forward contracts		0.7			2.3			1.3
Purchases of fixed assets		0.0			0.0			(0.3	)
Cash (used) provided by investing activities		(0.7	)		1.4			1.0
Cash flows from financing activities:
Borrowings under intercompany note payable, net		(49.3	)		55.0			(60.6	)
Activity under stock incentive plans		2.6			1.2			1.1
Redemption of trust preferred securities, net		0.0			(15.1	)		0.0
Payment of cash dividend to common shareholders		(15.8	)		(12.3	)		(13.1	)
Cash (used) provided by financing activities		(62.5	)		28.8			(72.6	)
Change in cash		0.0			0.0			0.0
Cash, beginning of year		0.0			0.0			0.0
Cash, end of year	$	0.0		$	0.0		$	0.0

F-58

ARGO GROUP INTERNATIONAL HOLDINGS, LTD.

SCHEDULE III

SUPPLEMENTARY INSURANCE INFORMATION

FOR THE YEARS ENDED DECEMBER 31, 2013, 2012 and 2011

(in millions)

	DAC		Reserves for Losses and Loss Adjustment Expenses		UPR		Premium Revenue			Net Invest. Income		Loss & LAE		Amortization (Deferral) DAC			Other Operating Exp		Premiums Written
Segment	(a)		(b)		(c)		(d)			(e) (l)		(f)		(g) (2)			(h)(3)		(i)
Year Ended December 31, 2013
Excess and Surplus Lines	$	38.8	$	1,171.8	$	264.8	$	460.2		$	42.2	$	244.0	$	(1.4	)	$	158.6	$	478.7
Commercial Specialty		18.1		653.4		159.4		299.0			22.8		194.0		0.4			97.0		288.2
International Specialty		2.2		295.6		117.1		142.4			8.4		79.9		(1.0	)		51.1		155.4
Syndicate 1200		54.8		777.0		237.8		401.7			11.0		208.6		(13.8	)		170.0		428.5
Run-off Lines		0.0		332.5		0.0		0.5			10.8		15.5		0.0			4.6		0.5
Corporate and Other		0.0		0.0		0.0		0.0			4.8		0.0		0.0			45.3		0.0
	$	113.9	$	3,230.3	$	779.1	$	1,303.8		$	100.0	$	742.0	$	(15.8	)	$	526.6	$	1,351.3
Year Ended December 31, 2012
Excess and Surplus Lines	$	37.3	$	1,209.0	$	239.0	$	399.3		$	51.1	$	223.3	$	(2.5	)	$	146.4	$	420.8
Commercial Specialty		18.6		660.0		173.0		317.5			27.6		257.0		3.4			104.9		306.4
International Specialty		1.4		257.3		102.5		130.1			12.3		73.5		0.1			43.7		145.5
Syndicate 1200		42.1		738.9		215.7		337.9			15.3		184.0		(5.5	)		139.4		370.2
Run-off Lines		0.0		358.3		0.0		1.7			12.5		9.8		0.0			2.8		1.6
Corporate and Other		0.0		0.0		0.0		0.0			0.0		0.0		0.0			31.8		0.0
	$	99.4	$	3,223.5	$	730.2	$	1,186.5		$	118.8	$	747.6	$	(4.5	)	$	469.0	$	1,244.5
Year Ended December 31, 2011
Excess and Surplus Lines	$	34.9	$	1,271.8	$	215.9	$	405.3		$	56.0	$	247.1	$	2.6		$	137.2	$	390.0
Commercial Specialty		22.1		622.8		176.4		316.7			27.7		236.4		(1.1	)		107.8		317.2
International Specialty		1.4		237.9		79.3		101.3			10.9		149.1		(0.4	)		31.2		97.4
Syndicate 1200		43.1		755.3		186.6		259.3			17.2		222.6		6.6			112.4		266.8
Run-off Lines		0.0		403.3		0.0		(0.6	)		13.3		7.9		0.0			8.3		0.4
Corporate and Other		0.0		0.0		0.0		0.0			0.7		0.0		0.0			21.1		0.0
	$	101.5	$	3,291.1	$	658.2	$	1,082.0		$	125.8	$	863.1	$	7.7		$	418.0	$	1,071.8

^(a)  Deferred Policy Acquisition Cost

^(b)  Future Policy Benefits, Losses, Claims and Loss Expenses

^(c)  Unearned Premiums

^(d)  Premium Revenue, net (premiums earned)

^(e) Net Investment Income

^(f)  Benefits, Claims, Losses and Settlement Expenses

^(g) Amortization (Deferral) of Deferred Policy Acquisition Costs

^(h) Other Operating Expenses

⁽ⁱ⁾ Premiums Written, net

⁽¹⁾ Net Investment Income allocated based upon each segment’s share of investable funds.

⁽²⁾ The amortization (deferral) of DAC will not equal the change in the balance sheet. See Note 1, “Business and Significant Accounting Policies” for further discussion.

⁽³⁾ Other Insurance Expenses allocated based on specific identification, where possible, and related activities.

F-59

ARGO GROUP INTERNATIONAL HOLDINGS, LTD.

SCHEDULE V

VALUATION AND QUALIFYING ACCOUNTS

(in millions)

	Balance at Beginning of Year		Charged to Cost and Expense			Capital Loss Carryforward		Net Operating Loss Carryforward		Charged to Other Accounts		Deductions		Balance at End of Year
Year ended December 31, 2013
Deducted from assets:
Valuation allowance for deferred tax asset	$	52.5	$	(1.0	)	$	0.0	$	0.0	$	4.7	$	0.0	$	56.2
Year ended December 31, 2012
Deducted from assets:
Valuation allowance for deferred tax asset	$	50.4	$	(1.0	)	$	0.0	$	0.0	$	3.1	$	0.0	$	52.5
Year ended December 31, 2011
Deducted from assets:
Valuation allowance for deferred tax asset	$	49.6	$	(1.0	)	$	0.0	$	0.0	$	1.8	$	0.0	$	50.4

F-60

ARGO GROUP INTERNATIONAL HOLDINGS, LTD.

SCHEDULE VI

SUPPLEMENTARY INFORMATION FOR PROPERTY-CASUALTY INSURANCE COMPANIES

(in millions)

	For the Years Ended December 31,
	2013			2012			2011
Deferred acquisition costs	$	113.9		$	99.4		$	101.5
Reserves for losses and loss adjustment expenses	$	3,230.3		$	3,223.5		$	3,291.1
Unamortized discount in reserves for losses	$	19.5		$	20.8		$	22.0
Unearned premiums	$	779.1		$	730.2		$	658.2
Premiums earned	$	1,303.8		$	1,186.5		$	1,082.0
Net investment income	$	100.0		$	118.8		$	125.8
Losses and loss adjustment expenses incurred:
Current year	$	775.6		$	780.5		$	866.5
Prior years		(33.6	)		(32.9	)		(3.4	)
Losses and loss adjustment expenses incurred	$	742.0		$	747.6		$	863.1
(Deferral) amortization of policy acquisition costs (1)	$	(15.8	)	$	(4.5	)	$	7.7
Paid losses and loss adjustment expenses, net of reinsurance	$	753.5		$	796.5		$	812.6
Gross premiums written	$	1,888.4		$	1,745.7		$	1,544.8

⁽¹⁾ The amortization (deferral) of policy acquisition costs will not equal the change in the balance sheet. For further discussion, see Note 1, “Business and Significant Accounting Policies.”

F-61

EX-10.18

EXHIBIT 10.18

SECOND AMENDMENT TO THE

ARGO GROUP INTERNATIONAL HOLDINGS LIMITED

DEFERRED COMPENSATION PLAN FOR NON-EMPLOYEE DIRECTORS

THIS SECOND AMENDMENT to the Argo Group International Holdings Limited Deferred Compensation Plan for Non-Employee Directors, dated February 12, 2008, as amended (the “Plan”), is effective as of December 16, 2013 (the “Second Amendment”).

Capitalized terms used in this Second Amendment that are not otherwise defined herein shall have the meanings ascribed to such terms in the Plan.

WHEREAS, Argo Group International Holdings (the “Company”) has adopted and maintained the Plan for the benefit of its non-employee directors; and

WHEREAS, pursuant to Section 9.02 of the Plan, the Company has reserved the right to amend the Plan; and

WHEREAS, the Company desires to amend the Plan to, among other reasons, provide for the termination of the Plan with respect to certain amounts deferred under the Plan.

NOW, THEREFORE, the Plan is hereby amended as follows:

1. Amendment: The third sentence of the preamble is hereby amended and restated in its entirety, as follows:

This Plan shall be deemed an unfunded promise to pay and the rights of any Participant or Beneficiary to benefits under this Plan shall, at all times, be no more than that of a general and unsecured creditor of Argo Group US, Inc.

2. Amendment: Section 1.08 of the Plan is hereby amended and restated in its entirety, as follows:

Effective as of the date of the Second Amendment, Company shall mean Argo Group US, Inc.

3. Amendment Section 1.19 of the Plan is hereby amended and restated in its entirety, as follows:

Stock Units: bookkeeping entry units which mirror Argo Group International Holdings Ltd. (“Argo Group”) stock in value and are awarded to Participants pursuant to the terms of the Plan. The value of Stock Units shall fluctuate on an equal basis with Argo Group’s common stock based upon the market price of Argo Group’s common stock on the national stock exchange on which such stock is listed. Dividends awarded on Argo Group common stock shall be treated as awarded on Stock Units on an equal basis. The value of such dividends shall be converted into additional Stock Units (in the method described above) as of the date such dividends are declared.

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4. Amendment: Section 3.01 of the Plan is hereby amended to add the following provision at the end thereof:

Effective as of the date of the Second Amendment, no person shall be eligible to become a participant in the Plan.

5. Amendment: Section 4.02 of the Plan is hereby amended to add the following provision at the end thereof:

Effective as of the date of the Second Amendment, no further deferral contributions may be made to the Plan.

6. Amendment: Section 7 of the Plan is hereby amended to add Section 7.06 at the end thereof, as follows:

7.06 Distribution of Compensation Previously Taxed. Notwithstanding anything contained herein to the contrary, all amounts in the Participant’s Cash Compensation Account previously deferred with respect to which the Participant has previously recognized US compensation income and paid income tax, and all interest accrued thereon (collectively, the “Previously Taxed Amounts”), shall be distributed to the Participant or a Beneficiary in a single lump sum no later than December 31, 2013.

7. Amendment: Section 9.02 of the Plan is hereby amended to add the following provisions at the end thereof:

Effective as of the date of this Second Amendment, the Plan is hereby terminated with respect to the Previously Taxed Amounts.

8. General: Except as specifically amended herein, the Plan will remain in full force and effect in accordance with its original terms, conditions, and provisions.

IN WITNESS WHEREOF, this Second Amendment is hereby executed with effect as of December 16, 2013.

Argo Group International Holdings Limited
	By: Dianna Mitchell
	Its: Assistant Vice President, Human Resources

Argo Group US, Inc.
	By: Lisa Paschal
	Its: Sr. Vive President, Human Resources

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EX-10.19

EXHIBIT 10.19

EXECUTIVE EMPLOYMENT AGREEMENT

This Executive Employment Agreement (this “Agreement”) is effective as of March 1, 2013 (the “Effective Date”) and is between Argo Group US, Inc., a Delaware company (the “Company”), and Kevin J. Rehnberg (the “Employee”).

RECITALS:

WHEREAS, the Company desires to employ the Employee as President, U.S. Operations of the Company.

WHEREAS, the Employee desires to accept such employment as President, U.S. Operations of the Company.

NOW, THEREFORE, in consideration of the promises and mutual agreements herein set forth, the parties hereby agree as follows:

1. Term of Employment. The period of employment of the Employee by the Company under this Agreement shall commence on March 1, 2013 and shall continue through March 1, 2017, unless earlier terminated in accordance with Section 6 hereof (the “Initial Term”). Upon expiration of the Initial Term, the Agreement shall be renewed for successive one-year terms (each, a “Renewal Term”; the Initial Term and each Renewal Term, if any, collectively, the “Employment Period”), unless, at least three (3) months prior to the expiration of the Initial Term or any Renewal Term, as applicable, the Company or the Employee shall have given the other party written notice of its or his intention not to renew this Agreement.

2. Duties. The Employee agrees to serve the Company in the position of President, U.S. Operations, reporting to the Chief Executive Officer of the Company or the President of the Company’s ultimate parent, Argo Group International Holdings, Ltd., and to perform diligently and to the best of his abilities the duties and services pertaining to such office. Unless otherwise agreed by the Company and the Employee, the Employee’s principal place of business with the Company shall be in San Antonio, Texas. The Employee’s employment shall also be subject to the policies maintained and established by the Company, if any, as the same may be amended from time to time. The Employee acknowledges and agrees that the Employee owes a fiduciary duty of loyalty, fidelity and allegiance to act at all times in the best interests of the Company and further agrees not to engage or participate in any act that would injure the business, interests, or reputation of the Company or any of its Affiliates. In keeping with these duties, the Employee shall make full disclosure to the Board of Directors of all business opportunities pertaining to the business of the Company or its Affiliates and should not appropriate for the Employee’s own benefit business opportunities that fall within the scope of the businesses conducted by the Company and its Affiliates. It is understood that the Employee shall travel to such extent as may be reasonably required in connection with the performance of his duties.

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3. Compensation.

(a) Base Salary. The Company shall pay to the Employee an initial base annual salary of $575,000 (the “Base Salary”), less all applicable legal deductions and/or withholding. The Base Salary shall be payable in accordance with the Company’s policies in effect from time to time, but in any event no less frequently than monthly. The Base Salary shall be reviewed annually by the Company for possible increase (but not decrease) and the Company may, in its sole discretion, choose to increase the Base Salary during the Employment Period of this Agreement. If the Base Salary is increased by the Company, such Base Salary shall then constitute the Base Salary for all purposes of this Agreement.

(b) Incentive Bonus. In addition to the Base Salary, during the Employment Period, the Employee may, in the sole discretion of the Company’s Board of Directors, be awarded an annual incentive bonus based upon the achievement of specific Company objectives as determined by the Company and set forth in a separate written bonus plan (the “Bonus Plan”). Employee will be eligible to participate in the Bonus Plan at a target participation rate of $575,000. For the year 2013 only, Employee’s annual incentive bonus shall be guaranteed in the amount of $575,000 and will be paid in quarterly installments. Thereafter, any annual incentive bonus shall be paid in accordance with the Bonus Plan. The Company further agrees to pay the Employee a hiring bonus of $275,000 within 30 days from the Effective Date. The Employee agrees to repay to the Company the net after tax amount of the hiring bonus paid to him if he voluntarily terminates his employment with the Company or is terminated for Cause at any time before the second anniversary of the Effective Date.

(c) Equity Compensation. The Employee shall be entitled to participate in the equity compensation plans established from time to time by the Company at a target participation rate of $575,000.

(d) Benefits. As additional compensation for the Employee, the Company shall provide or maintain for Employee medical, welfare and health insurance benefit plans on the same terms and conditions as are made available to all employees of the Company generally, subject to the terms and conditions of such plans as in effect from time to time.

4. Vacation. Employee shall be entitled to a reasonable vacation(s) during each year of his employment under this Agreement pursuant to the Company’s Paid Time Off policy as in effect from time to time.

5. Reimbursement For Expenses. The Company shall reimburse the Employee for all reasonable and necessary business expenses incurred by him in the performance of his duties during the Employment Period, provided that such expense is submitted in accordance with the Company’s policies and procedures as in effect from time to time. In no event shall expenses eligible for reimbursement be reimbursed later than December 31 of the year following the calendar year in which the Employee incurred the related

2

expense. Any reimbursement in one calendar year may not affect the amount that may be reimbursed in any other calendar year and a right to reimbursement may not be exchanged or liquidated for another benefit or payment. The Company further agrees to provide the Employee with a one-time relocation allowance of $100,000 and to reimburse the Employee for the reasonable and customary expenses Employee incurs in relocating his primary residence to San Antonio, Texas.

6. Termination of Agreement.

(a) Death. This Agreement shall automatically terminate upon the death of the Employee.

(b) Disability. If, as a result of the Employee’s incapacity due to physical or mental illness, the Employee shall have been substantially unable, either with or without reasonable accommodation, to perform his duties hereunder for an entire period of six (6) consecutive months, and within thirty (30) days after written notice of termination is given after such six (6) month period, the Employee shall not have returned to the substantial performance of his duties on a full-time basis (“Disability”), the Company shall have the right to terminate the Employee’s employment hereunder for Disability, and such termination in and of itself shall not be, nor shall it be deemed to be, a breach of this Agreement. Any dispute between the Employee and the Company regarding whether the Employee has a Disability shall be determined in writing by a qualified independent physician mutually acceptable to the Employee and the Company. If the Employee and the Company cannot agree as to a qualified independent physician, each shall appoint a physician and those two physicians shall select a third who shall make such determination in writing. The determination of Disability made in writing to the Company and the Employee shall be final and conclusive for all purposes of the Agreement. The Employee acknowledges and agrees that a request by the Company for such a determination shall not be considered as evidence that the Company regarded the Employee as having a Disability.

(c) Termination by the Company for Cause. The Company may terminate this Agreement and the Employee’s employment with the Company upon written notice to the Employee at any time for Cause in accordance with the procedures provided below.

(d) For purposes of this Agreement, “Cause” shall mean:

(i) other than as a result of the Employee having a Disability, the willful and continued failure by the Employee to substantially perform his duties with the Company within a reasonable period of time after a written demand for substantial performance is delivered to the Employee by the Company, which demand shall specifically identify the manner in which the Company believes that the Employee has not substantially performed his duties;

3

(ii) the entry of a plea of guilty, or judgment entered after trial finding the Employee guilty of a crime punishable by imprisonment in excess of one year involving moral turpitude (meaning a crime that includes the commission of an act of gross dishonesty or bad morals);

(iii) willfully engaging by the Employee in conduct that the Employee knows or reasonably should know is materially detrimental to the reputation, character or standing or otherwise injurious to the Company or any of its shareholders, direct or indirect subsidiaries and Affiliates, monetarily or otherwise;

(iv) without limiting the generality of Section 6(d)(i), the breach or threatened breach of any of the provisions of Sections 8 or 9; or

(v) a final ruling (or interim ruling that has not been stayed by appeal) in any state or federal court or by an arbitration panel that the Employee has breached the provisions of a non-compete or non-disclosure agreement, or any similar agreement or understanding, which would in any material way limit, as determined by the Board of Directors of the Company, the Employee’s ability to perform under this Agreement now or in the future.

The Employee shall have 15 calendar days from the giving of written notice within which to cure and during which period the Company cannot terminate his employment under this Agreement for the stated reasons and, if so cured, after which the Company cannot terminate his employment under this Agreement for the stated reasons; provided, however, that this sentence shall not apply with respect to events which by their nature cannot be cured.

(e) Termination By the Company Without Cause. The Company may terminate this Agreement and the Employee’s employment with the Company at any time, and for any reason, by providing at least thirty (30) days written notice to the Employee.

(f) Termination by the Employee. The Employee may terminate this Agreement and the Employee’s employment with the Company at any time, and for any reason, by providing at least thirty (30) days written notice to the Company.

7. Effect of Termination. Upon the termination of this Agreement, no rights of the Employee which shall have accrued prior to the date of such termination shall be affected in any way.

(a) Upon Death or Disability of the Employee.

During the Employment Period, if the Employee’s employment is terminated due to his death or Disability, the Employee’s estate or the Employee, as applicable, shall be entitled to receive the Base Salary set forth in Section 3 accrued through

4

the date of death or the date of the Employee’s termination due to Disability, as applicable and any incentive bonus Fully-Earned through the date of such termination. “Fully-Earned” shall mean that for purposes of determining whether the Employee shall be entitled to an incentive bonus, that such Employee shall be treated as if he had been employed through the last date of the regular period for determining whether or not an incentive bonus is payable in the standard manner that all such employees are evaluated even though Employee is no longer employed by the Company, and his eligibility for an incentive bonus, if any, shall be determined accordingly. Further, from the date of Employee’s termination through the eighteenth (18) month anniversary thereof, the Employee or, in the event of the Employee’s death, the Employee’s eligible dependents (including a surviving spouse), shall be entitled to continued participation in all health and medical plans or programs in which the Employee or such eligible dependents, as applicable, were participating on the termination date and, subject to Section 5, the Company agrees to continue paying the same portion of the premiums for such coverage as the Company paid for the Employee or eligible dependents immediately prior to the termination date.

(b) By the Company Without Cause

If the Employee’s employment with the Company is terminated under Section 6(e) and such termination of employment constitutes a “separation from service” (within the meaning of Section 409A of the Code and any related regulations or other guidance promulgated thereunder (“Section 409A”)), and as consideration for the Employee’s continuing obligations under Sections 8 and 9 hereof:

(i) The Employee shall be entitled to receive his Base Salary set forth in Section 3 accrued through the date of such termination and any bonus Fully-Earned through the date of such termination;

(ii) The Company shall pay the Employee as severance an amount equal to the Employee’s Base Salary (or if a Change of Control has then occurred or is reasonably expected to occur an amount equal to two times his Base Salary), such amount to be paid in installments over the period of twelve (12) months in accordance with the Company’s regular payroll practices; provided, however, that the first such severance payment shall be paid on the first day of the month coincident with or first following the sixtieth (60^th) day following the date of termination in an amount equal to the severance payments that would have otherwise been paid during that sixty (60) day period; and provided, further, that if the Employee is a “specified employee” (within the meaning of Section 409A of the Code) and any such installment payments are scheduled to be paid after March 15 of the year following termination of employment, the payment of severance may be further delayed as described in Section 7(d);

5

(iii) The Employee shall be entitled to continued participation in all health and medical plans or programs in which the Employee was participating on the termination date and, subject to Section 5, the Company agrees to continue paying the same portion of the Employee’s premiums for such coverage as the Company paid for the Employee immediately prior to the termination date, until the earlier of (A) 18 months following the termination date and (B) the date the Employee obtains reasonably equivalent coverage and benefits under the plans and programs of a subsequent employer. Thereafter, if the Employee is eligible and wishes to continue the Employee’s continuation coverage, the Employee may continue such coverage, provided, however, the Employee shall be solely responsible for payment of the entire premium for such coverage,

(iv) It shall be a condition precedent of payment or provision to the Employee of such payment and continued benefits pursuant to this Section 7(b) that within sixty (60) days following the date of termination the Employee execute with all revocation periods expired a full and complete release of the Company, each of its subsidiaries, Affiliates and their respective past, present and future partners, officers, directors, employees, consultants, attorneys, agents and stockholders, in form and substance reasonably acceptable to the parties (which shall also include a release by the Company and its Affiliates of claims against the Employee), of any claims the Employee may have against any of them, to the extent such claims arise from the Employee’s employment hereunder and excluding (i) vested rights under the Company’s plans and arrangements, and (ii) rights to indemnification and advancement of legal fees to the maximum extent provided by the Company’s bylaws, charter and applicable law;

(v) The Employee shall remain bound by the restrictive covenants and obligations contained in Sections 8 and 9; and

(vi) Except as provided for in this Section 7(b), the Employee shall not have any rights which have not previously accrued upon termination of this Agreement.

(c) By the Company for Cause. In the event the Employee’s employment with the Company is terminated pursuant to Section 6(c), the Employee shall be entitled to receive the Base Salary and any benefits set forth in Section 3 accrued but unpaid through the date of termination (and the reimbursement of business expenses as provided in Section 5), and the Employee shall not be entitled to any other benefits (except as required by law).

(d) Six Month Delay. Notwithstanding any provisions of this Agreement to the contrary, if the Employee is a “specified employee” (within the meaning of Section 409A of the Code) at the time of the Employee’s “separation from

6

service” (within the meaning of Section 409A of the Code) and if any portion of the payments or benefits to be received by the Employee upon the Employee’s separation from service would be considered deferred compensation under Section 409A of the Code, then each portion of such payments and benefits that would otherwise be payable or provided shall instead be paid or made available on the date following the six month anniversary of the Employee’s separation from service or, if earlier, the date of his death.

8. Confidential Information.

(a) The Company shall disclose to the Employee, or place the Employee in a position to have access to or develop, trade secrets or confidential information of the Company or its Affiliates; and/or shall entrust the Employee with business opportunities of the Company or its Affiliates; and/or shall place the Employee in a position to develop business good will on behalf of the Company or its Affiliates.

(b) The Employee acknowledges that during his employment with the Company he occupies a position of trust and confidence and agrees that he shall treat as confidential and shall not, without prior written authorization from the Company, directly or indirectly, disclose or make known to any person or use for his own benefit or gain, the methods, process or manner of accomplishing the business undertaken by the Company or its Affiliates, or any non-public information, plans, formulas, products, trade secrets, marketing or merchandising strategies, or confidential material or information and instructions, technical or otherwise, issued or published for the sole use of the Company, or information which is disclosed to the Employee or in any acquired by him during his employment with the Company, or any information concerning the present or future business, processes, or methods of operation of the Company or its Affiliates, or concerning improvement, inventions or know how relating to the same or any part thereof, it being the intent of the Company, with which intent the Employee hereby agrees, to restrict him from disseminating or using for his own benefit any information belonging directly or indirectly to the Company which is unpublished and not readily available to the general public (collectively, “Confidential Information”).

(c) The confidentiality obligations set forth in (a) and (b) of this Section 8 shall apply during the Employment Period and indefinitely thereafter.

(d) All information, ideas, concepts, improvements, discoveries, and inventions, whether patentable or not, that are conceived, made, developed or acquired by the Employee, individually or in conjunction with others, during the Employee’s employment with the Company (whether during business hours or otherwise and whether on the premises of the Company or an Affiliate or otherwise) that relate to the business, products or services of the Company or any Affiliate shall be disclosed to the Board and are and shall be the sole and exclusive property of the Company or such Affiliate. Moreover, all documents, drawings, memoranda, notes, records, files, correspondence, manuals, models, specifications, computer

7

programs, e-mail, voice mail, electronic data bases, maps and all other writings and materials of any type embodying any such information, ideas, concepts, improvements, discoveries and inventions are and shall be the sole and exclusive property of the Company. Upon termination of the Employee’s employment for any reason, the Employee promptly shall deliver the same, and all copies thereof, to the Company.

(e) If, during the Employee’s employment by the Company, the Employee creates any work of authorship fixed in any tangible medium of expression that is the subject matter of copyright (such as video tapes, written presentations, or acquisitions, computer programs, e-mail, voice mail, electronic data bases, drawings, maps, architectural renditions, models, manuals, brochures or the like) relating to the Company’s business, products or services, whether such work is created solely by the Employee or jointly with others (whether during business hours or otherwise and whether on the Company’s premises or otherwise), the Company shall be deemed the author of such work if the work is prepared by the Employee in the scope of the Employee’s employment.

9. Restrictive Covenants.

(a) For the purposes of this Section, the following words have the following meanings:

(i) “Affiliate” means, with respect to any individual or a corporation, partnership, trust, incorporated or unincorporated association, joint venture, limited liability company, joint stock company, government (or an agency or political subdivision thereof) or other entity of any kind (each a “person”), any other person that directly or indirectly controls or is controlled by or under common control with such person. For the purposes of this definition, “control” when used with respect to any person, means the possession, direct or indirect, of the power to direct or cause the direction of the management and policies of such person, whether through the ownership of voting securities, by contract or otherwise; and the terms of “affiliated”, “controlling” and “controlled” have meanings correlated to the foregoing.

(ii) “Company Services” means any services (including but not limited to technical and product support, technical advice, underwriting and customer services) supplied by the Company or its Affiliates in the specialty property and/or casualty insurance business.

(iii) “Confidential Information” has the meaning ascribed thereto in Section 8.

(iv) “Customer” means any person or firm or company or other organization whatsoever to whom or which the Company or its Affiliates supplied Company Services during the Restricted Period and with whom or which, during the Restricted Period: (x) the Employee had material personal dealings pursuant to his employment, or (y) any employee who was under the direct or indirect supervision of the Employee had material personal dealings pursuant to his or her employment.

8

(v) “Prospective Customer” means any person or firm or company or other organization whatsoever with whom or which the Company or its Affiliates shall have had negotiations or material discussions regarding the possible distribution, sale or supply of Company Services during the Restricted Period and with whom or which during such period: (x) the Employee shall have had material personal dealings pursuant to his employment, or (y) any employee who was under the direct or indirect supervision of the Employee shall have had material personal dealings pursuant to his or her employment, or (z) the Employee was directly responsible in a client management capacity on behalf of the Company.

(vi) “Restricted Area” means: (x) the United States, or (y) any geographic area in which the Company or its Affiliates provided Restricted Services and for which the Employee was responsible in the 12 months preceding the date of the Employee’s termination of employment.

(vii) “Restricted Employee” means any person who on the date of the Employee’s termination of employment by the Company was at the level of director, manager, underwriter or salesperson with whom the Employee had material contact or dealings in the course of his employment during the Restricted Period;

(viii) “Restricted Period” means the period of 12 months ending on the last day of the Employee’s employment with the Company.

(ix) “Restricted Services” means Company Services or any services of the same or of a similar kind.

(b) The Employee recognizes that, while performing his duties for the Company, he will have access to and come into contact with trade secrets and Confidential Information belonging to the Company and its Affiliates and will obtain personal knowledge of and influence over its or their customers and/or employees. The Employee therefore agrees that the restrictions set out in this Section 9 are reasonable and necessary to protect the legitimate business interests of the Company and its Affiliates both during and after the termination of his employment.

(c) The Employee hereby undertakes with the Company that he will not during his employment with the Company and for the period of twelve months after he ceases to be employed by the Company, whether by himself through his employers or employees or agents or otherwise howsoever and whether on his

9

own behalf or on behalf of any other person, firm, company or other organization directly or indirectly:

(i) in competition with the Company or its Affiliates within the Restricted Area, be employed or engaged or otherwise interested in the business of researching into, developing, underwriting, distributing, selling, supplying or otherwise dealing with Restricted Services; or

(ii) in competition with the Company or its Affiliates, accept orders or facilitate the acceptance of any orders or have any business dealings for Restricted Services from any Customer or Prospective Customer; or

(iii) employ or otherwise engage in the business of or be personally involved to a material extent in employing or otherwise engaging in the business of researching into, developing, distributing, selling, supplying or otherwise dealing with Restricted Services, any person who was during the Restricted Period employed or otherwise engaged by the Company and who by reason of such employment or engagement is reasonably likely to be in possession of any trade secrets or Confidential Information relating to the business of the Company.

(d) The Employee hereby undertakes with the Company that he shall not during his employment with the Company and for the period of twelve months after he ceases to be employed by the Company for any reason, whether the termination is by the Company, by the Employee or due to Disability, without the prior written consent of the Company, whether by himself, through his employers or employees or agents or otherwise, howsoever and whether on his own behalf or on behalf of any other person, firm, company or other organisation directly or indirectly:

(i) in competition with the Company, solicit business from or endeavour to entice away or canvass any Customer or Prospective Customer if such solicitation or canvassing is in respect of Restricted Services;

(ii) solicit or induce or endeavour to solicit or induce any Restricted Employee to cease working for or providing services to the Company, or hire any Restricted Employee.

(e) This Section 9 shall be for the benefit of the Company and each of its Affiliates and the Company reserves the right to assign the benefit of such provisions to any of its Affiliates, in addition such provisions also apply as though there were substituted for references to “the Company” references to each of its Affiliates in relation to which the Employee has in the course of his duties for the Company or by reason of rendering services to or holding office in such Affiliate: (x) acquired knowledge of its trade secrets or Confidential Information; or (y) had material personal dealings with its Customers or Prospective Customers; or (z) supervised directly or indirectly employees having material personal dealings with its

10

Customers or Prospective Customers but so that references in this Section 9 to “the Company” shall for this purpose be deemed to be replaced by references to the relevant Affiliate. The obligations undertaken by the Employee pursuant to this Section 9 shall, with respect to each Affiliate of the Company, constitute a separate and distinct covenant and the invalidity or unenforceability of any such covenant shall not affect the validity or enforceability of the covenants in favour of any other Affiliate or the Company. For the sake of clarity, any written consent of the Company shall be effective against any Affiliate of the Company.

(f) While the restrictions in this Section 9 (on which the Employee has had the opportunity to take independent advice, as the Employee hereby acknowledges) are considered by the parties to be reasonable in all the circumstances, it is agreed that if any such restrictions, by themselves, or taken together, shall be adjudged to go beyond what is reasonable in all the circumstances for the protection of the legitimate interests of the Company or its Affiliates but would be adjudged reasonable if part or parts of the wording thereof were deleted, the relevant restriction or restrictions shall apply with such deletion(s) as may be necessary to make it or them valid and effective.

10. Remedies for Breach. In addition to the rights and remedies otherwise provided in this Agreement, and without waiving the same if the Employee breaches, or threatens to breach, any of the provisions of Sections 8 or 9, the Company shall have the following rights and remedies, in addition to any others, each of which shall be independent of the other and severally enforceable:

(a) The right and remedy to have such provisions specifically enforced by any court having equitable jurisdiction. The Employee specifically acknowledges and agrees that any breach or threatened breach of the provisions of Sections 8 or 9 hereof may cause irreparable injury to the Company and that money damages will not provide an adequate remedy to the Company.

(b) The right to require the Employee to account for and pay over to the Company all compensation, profits, monies, accruals, increments or other benefits (hereinafter collectively the “Benefits”) derived or received by the Employee as a result of any transactions constituting a breach of any of the provisions of Sections 8 or 9.

(c) Upon discovery by the Company of a breach or threatened breach of Sections 8 or 9, the right to immediately suspend payments to the Employee under Section 3 or 7(b) pending a resolution of the dispute.

(d) The right to terminate the Employee’s employment pursuant to Section 6.

11. Change of Control.

11

(a) For purposes of this Agreement, a “Change of Control” shall be deemed to occur if:

(i) Any Person, other than (1) the Company or any of its subsidiaries, (2) a trustee or other fiduciary holding securities under an employee benefit plan of the Company or any of its Affiliates, (3) an underwriter temporarily holding securities pursuant to an offering of such securities, or (4) a corporation owned, directly or indirectly, by the shareholders of the Company in substantially the same proportions as their ownership of stock of the Company, is or becomes the Beneficial Owner, directly or indirectly, of securities of the Company (not including in the securities beneficially owned by such person any securities acquired directly from the Company or its Affiliates) representing 50% or more of the combined voting power of the Company’s then outstanding securities, or 50% or more of the then outstanding common stock of the Company, excluding any Person who becomes such a Beneficial Owner in connection with a merger or consolidation of the Company described in (ii) below.

(ii) There is consummated a merger or consolidation of the Company or any direct or indirect subsidiary of the Company with any other corporation, except if: (A) the merger or consolidation would result in the voting securities of the Company outstanding immediately prior thereto continuing to represent (either by remaining outstanding or by being converted into voting securities of the surviving entity or any parent thereof) at least fifty percent (50%) of the combined voting power of the voting securities of the Company or such surviving entity or any parent thereof outstanding immediately after such merger or consolidation; or (B) the merger or consolidation is effected to implement a recapitalization of the Company (or similar transaction) in which no Person is or becomes the beneficial owner, directly or indirectly, of securities of the Company (not including in the securities beneficially owned by such Person any securities acquired directly from the Company or its Affiliates other than in connection with the acquisition by the Company or its Affiliates of a business) representing 50% or more of the combined voting power of the Company’s then outstanding securities;

(iii) The shareholders of the Company approve a plan of complete liquidation or dissolution of the Company or an agreement for the sale or disposition by the Company of all or substantially all the Company’s assets, other than a sale or disposition by the Company of all or substantially all of the Company’s assets to an entity, at least 50% of the combined voting power of the voting securities of which are owned by the stockholders of the Company in substantially the same proportions as their ownership of the Company immediately prior to such sale.

12

(iv) During any one year period, individuals who at the beginning of the period constitute the Board of Directors of the Company cease for any reason to constitute a majority of the Board of Directors.

(b) For purposes of this Section 11:

(i) The term “Person” shall have the meaning given in Section 3(a)(9) of the 1934 Act as modified and used in Sections 13(d) and 14(d) of the 1934 Act.

(ii) The term “Beneficial Owner” shall have the meaning provided in Rule 13d-3 under the 1934 Act.

(iii) The term “Affiliate” shall have the meaning set forth in Section 9(a)(i).

12. Notices. Any notice required or permitted to be given to the Employee pursuant to this Agreement shall be sufficiently given if sent to the Employee by registered or certified mail addressed to the Employee at his home address as reflected in the Company’s records, or at such other address as he shall designate by notice to the Company, and any notice required or permitted to be given to the Company pursuant to this Agreement shall be sufficiently given if sent to Argo Group US, Inc.’s General Counsel by registered or certified mail to 175 E. Houston, Suite 1300, San Antonio, Texas 78205, or at such other address as it shall designate by notice to the Employee.

13. Successors and Assigns. This Agreement is personal in its nature and neither of the parties hereto shall, without the consent of the other, assign or transfer this Agreement or any rights or obligations hereunder, provided, however, that the provisions hereof shall enure to the benefit of, and be binding upon, each successor of the Company, whether by merger, consolidation, acquisition or otherwise, unless otherwise agreed to by the Employee and the Company.

14. Invalid Provisions. The invalidity or unenforceability of a particular provision of this Agreement shall not affect the enforceability of any other provisions hereof and this Agreement shall be construed in all respects as if such invalid or unenforceable provision were omitted.

15. Amendment. This Agreement may only be amended in writing by an agreement executed by both parties hereto.

16. Effect on Prior Agreements. This Agreement supersedes any and all prior agreements, understandings or offers, oral or written, and negotiations between said parties regarding the subject matter contained herein.

17. Applicable Law and Venue. This Agreement is entered into under, and shall be governed for all purposes, by the laws of the State of Texas; with venue of any lawsuit or arbitration between the parties in Bexar County, Texas.

13

18. No Waiver. The Company’s or the Employee’s failure at any time to give notice of any breach by the other party of, or to require compliance with, any condition or provision of this Agreement shall not be deemed a waiver of similar or dissimilar provisions or conditions at the same or at any prior or subsequent time.

19. Severability. If a court of competent jurisdiction determines that any provision of this Agreement is invalid or unenforceable, then the invalidity or unenforceability of that provision shall not effect the validity or unenforceability of any other provision of this Agreement, and all other provisions shall remain in full force and effect.

20. Section 409A Compliance. This Agreement is intended to meet the requirements of Section 409A, and shall be interpreted and construed consistent with that intent. Each payment made under this Agreement shall be designated as a “separate payment” within the meaning of Section 409A of the Code.

21. Withholding of Taxes and Other Employee Deductions. The Company may withhold from any benefits and payments made pursuant to this Agreement all federal, state, city and other taxes as may be required pursuant to any law or governmental regulation or ruling and any and all other normal employee deductions made with respect to the Company’s employees generally.

22. Counterparts. This Agreement may be executed in one or more counterparts, each of which shall be deemed to be an original, but all of which together will constitute one in the same agreement.

In witness whereof, the parties hereto have executed this Agreement as of the day and year above written.

Argo Group US, Inc.		Employee:
By:
	Mark E. Watson III		Kevin J. Rehnberg
	Title: Chief Executive Officer

14

EX-12

Exhibit 12

ARGO GROUP INTERNATIONAL HOLDINGS, LTD.

STATEMENTS OF COMPUTATION OF RATIOS OF EARNINGS TO FIXED CHARGES

AND EARNINGS TO COMBINED FIXED CHARGES AND PREFERRED SHARE DIVIDENDS

(in millions, except ratios)

	Years Ended December 31,
	2013		2012		2011			2010		2009
Earnings:
Income (loss) before provision for income taxes	$	179.7	$	66.7	$	(61.9	)	$	121.9	$	139.1
Add:
Fixed charges		25.1		28.4		26.7			26.6		29.5
Total earnings	$	204.8	$	95.1	$	(35.2	)	$	148.5	$	168.6
Fixed charges:
Interest expense	$	20.2	$	23.7	$	22.1		$	22.9	$	25.7
Rental interest factor		4.9		4.7		4.6			3.7		3.8
Total fixed charges	$	25.1	$	28.4	$	26.7		$	26.6	$	29.5
Ratio of earnings to fixed charges		8.2:1		3.3:1		(a	)		5.6:1		5.7:1

(a) The coverage deficiency for the year ended December 31, 2011 was $69.1 million.

EX-21

Exhibit 21

Subsidiaries of Argo Group International Holdings, Ltd.

Company Name	Country/State of Incorporation
The Argo Foundation	Bermuda
PXRE Capital Statutory Trust II	Connecticut
PXRE Capital Statutory Trust V	Connecticut
PXRE Capital Trust VI	Delaware
Argonaut Services GmbH	Switzerland
Argo Re, Ltd.	Bermuda
Argo Irish Holdings I, Ltd.	Bermuda
Argo Irish Holdings II	Bermuda
Argo Brasil Participacões Ltd.	Brazil
PXRE Reinsurance (Barbados), Ltd.	Barbados
Mid Atlantic Risk Systems, Ltd.	Bermuda
Argo Re DIFC, Ltd.	United Arab Emirates
Argo International Holdings, Ltd.	United Kingdom
Argo Underwriting Agency, Ltd.	United Kingdom
Argo Management Services, Ltd.	United Kingdom
Argo Management Holdings, Ltd.	United Kingdom
Argo Managing Agency, Ltd.	United Kingdom
Argo Direct, Ltd.	United Kingdom
Argo (No. 604), Ltd.	United Kingdom
Argo (No. 616), Ltd.	United Kingdom
Argo (No. 607), Ltd.	United Kingdom
Argo (No. 617), Ltd.	United Kingdom
Argo (No. 703), Ltd.	United Kingdom
Argo (No. 704), Ltd.	United Kingdom
Argo (Alpha), Ltd.	United Kingdom
Argo (Beta), Ltd.	United Kingdom
Argo (Chi), Ltd.	United Kingdom
Argo (Delta), Ltd.	United Kingdom
Argo (Epsilon), Ltd.	United Kingdom
ArgoGlobal Holdings (Malta) Ltd	Malta
ArgoGlobal SE	Malta
Argo Financial Holding, Ltd. (Ireland)	Ireland
Argo Solutions, SA	Belgium
Argo Financial Holding (Brazil) Limited	Ireland
Argo Seguras Brasil, SA	Brazil
Argo Group US, Inc.	Delaware
Argonaut Group Statutory Trust	Connecticut
Argonaut Group Statutory Trust III	Delaware
Argonaut Group Statutory Trust IV	Delaware
Argonaut Group Statutory Trust V	Delaware
Argonaut Group Statutory Trust VI	Connecticut
Argonaut Group Statutory Trust VII	Delaware
Argonaut Group Statutory Trust VIII	Delaware
Argonaut Group Statutory Trust IX	Delaware
Argonaut Group Statutory Trust X	Delaware
Argonaut Management Services, Inc.	Delaware
Argus Reinsurance Intermediaries, Inc.	Texas
Argo Group Fund to Secure the Future	Texas
Alteris, Inc	Delaware
Sonoma Risk Management, LLC	Delaware
John Sutak Insurance Brokers, Inc.	California
Trident Insurance Services, LLC	Texas

Company Name	Country/State of Incorporation
Alteris Insurance Services, Inc.	Massachusetts
Canterbury Claims Services, Inc.	New Jersey
Colony Management Services, Inc.	Virginia
Colony Agency Services, Inc.	Virginia
Argonaut Claims Management, LLC	Texas
Argonaut Claims Services, Ltd.	Texas
Colony Insurance Company	Virginia
Colony Specialty Insurance Company	Ohio
Colony National Insurance Company	Virginia
Argonaut Insurance Company	Illinois
Argonaut-Midwest Insurance Company	Illinois
Argonaut-Southwest Insurance Company	Illinois
Argonaut Great Central Insurance Company	Illinois
Insight Insurance Services, Inc.	Illinois
Select Markets Insurance Company	Illinois
Argonaut Limited Risk Insurance Company	Illinois
Central Insurance Management, Inc.	Illinois
Grocers Insurance Agency, Inc.	Oregon
AGI Properties, Inc.	California
Rockwood Casualty Insurance Company	Pennsylvania
Somerset Casualty Insurance Company	Pennsylvania
Coal Operators Indemnity Company	Pennsylvania
ARIS Title Insurance Corporation	New York

EX-23

Exhibit 23

Consent of Independent Registered Public Accounting Firm

We consent to the incorporation by reference in the following Registration Statements and in the related Prospectuses:

1. Registration Statement (Form S-8 File No. 333-147967) pertaining to Argo Group International Holdings, Ltd. 2007 Long-Term Incentive Plan and Argo Group International Holdings, Ltd. 2007 Employee Share Purchase Plan;

2. Registration Statement (Form S-8 File No. 333-147714) pertaining to the Argo Group International Holdings, Ltd. – Argonaut Group, Inc. Amended and Restated Stock Incentive Plan, the Argonaut Group, Inc. Non-Employee Director Stock Option Plan, and the Argonaut Deferred Compensation Plan for Non-Employee Directors;

3. Registration Statement (Form S-8 File No. 333-161299) pertaining to the Argo Group International Holdings, Ltd. 2007 Employee Share Purchase Plan;

4. Registration Statement (Form S-3 File No. 333-161445) pertaining to the Argo Group International Holdings, Ltd. registration of senior debt securities, subordinated debt securities, common shares, preferred shares, warrants, units, depositary shares, purchase contracts, hybrid securities, trust preferred securities and guarantees of trust preferred securities; and

5. Registration Statement (Form S-3 File No. 333-183957) pertaining to the Argo Group International Holdings, Ltd. registration of debt securities, common shares, preferred shares, warrants, units, depositary shares, purchase contracts, hybrid securities, trust preferred securities and guarantees of trust preferred securities and debt securities;

of our reports dated February 28, 2014, with respect to the consolidated financial statements and schedules of Argo Group International Holdings, Ltd. and the effectiveness of internal control over financial reporting of Argo Group International Holdings, Ltd. included in this Annual Report (Form 10-K) for the year ended December 31, 2013.

/s/ Ernst & Young LLP

San Antonio, Texas

February 28, 2014

EX-31.1

Exhibit 31.1

Rule 13a-14(a)/15d-14(a)

Certification of the Chief Executive Officer

I, Mark E. Watson III, President and Chief Executive Officer of Argo Group International Holdings, Ltd., certify that:

1. I have reviewed this Annual Report on Form 10-K of Argo Group International Holdings, Ltd.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a. Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b. Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c. Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d. Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a. All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b. Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: February 28, 2014

/s/ Mark E. Watson III

Mark E. Watson III

President and Chief Executive Officer

EX-31.2

Exhibit 31.2

Rule 13a-14(a)/15d-14(a)

Certification of the Chief Financial Officer

I, Jay S. Bullock, Executive Vice President and Chief Financial Officer of Argo Group International Holdings, Ltd., certify that:

1. I have reviewed this Annual Report on Form 10-K of Argo Group International Holdings, Ltd.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a. Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b. Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c. Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d. Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a. All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b. Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: February 28, 2014

/s/ Jay S. Bullock

Jay S. Bullock

Executive Vice President and Chief Financial Officer

EX-32.1

Exhibit 32.1

Certification of CEO Pursuant to

18 U.S.C. Section 1350,

as Adopted Pursuant to

Section 906 of the Sarbanes-Oxley Act of 2002

In connection with the Annual Report on Form 10-K of Argo Group International Holdings, Ltd. (the “Company”) for the year ended December 31, 2013 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), Mark E. Watson III, as President and Chief Executive Officer of the Company, hereby certifies, pursuant to 18 U.S.C. §1350, as adopted pursuant to §906 of the Sarbanes-Oxley Act of 2002, that, to the best of his knowledge:

1. The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

2. The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

*        *        *

Certified this 28^th day of February, 2014.

/s/ Mark E. Watson III

Mark E. Watson III

President and Chief Executive Officer

EX-32.2

Exhibit 32.2

Certification of CFO Pursuant to

18 U.S.C. Section 1350,

as Adopted Pursuant to

Section 906 of the Sarbanes-Oxley Act of 2002

In connection with the Annual Report on Form 10-K of Argo Group International Holdings, Ltd. (the “Company”) for the year ended December 31, 2013 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), Jay S. Bullock, as Executive Vice President and Chief Financial Officer of the Company, hereby certifies, pursuant to 18 U.S.C. §1350, as adopted pursuant to §906 of the Sarbanes-Oxley Act of 2002 that, to the best of his knowledge:

1. The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

2. The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

*        *        *

Certified this 28^th day of February, 2014.

/s/ Jay S. Bullock

Jay S. Bullock

Executive Vice President and Chief Financial Officer

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Investments (Tables)

12 Months Ended

Dec. 31, 2013

Investments Debt And Equity Securities [Abstract]

Schedule of Amortized Cost, Gross Unrealized Gains, Gross Unrealized Losses and Fair Value of Investments

The amortized cost, gross unrealized gains, gross unrealized losses and fair value of investments as of December 31 were as follows:

December 31, 2013			Gross		Gross
	Amortized		Unrealized		Unrealized		Fair
(in millions)	Cost		Gains		Losses		Value
Fixed maturities
USD denominated:
U.S. Governments	$	273.4	$	2.4	$	0.5	$	275.3
Non-U.S. Governments		60.9		0.3		1.0		60.2
Obligations of states and political subdivisions		563.7		22.9		8.8		577.8
Credit-Financial		426.3		15.4		1.8		439.9
Credit-Industrial		385.5		13.8		2.2		397.1
Credit-Utility		162.0		5.4		0.8		166.6
Structured securities:
CMO/MBS-agency (1)		219.4		9.2		1.7		226.9
CMO/MBS-non agency		19.4		0.8		0.0		20.2
CMBS (2)		162.7		3.1		1.0		164.8
ABS-residential (3)		6.8		0.3		0.5		6.6
ABS-non residential		116.8		0.5		0.1		117.2
Foreign denominated:
Governments		207.7		4.9		5.9		206.7
Credit		155.5		4.4		4.8		155.1
Total fixed maturities		2,760.1		83.4		29.1		2,814.4
Equity securities		346.9		188.6		1.2		534.3
Other investments		377.4		2.8		1.3		378.9
Short-term investments		351.6		0.0		0.0		351.6
Total investments	$	3,836.0	$	274.8	$	31.6	$	4,079.2

December 31, 2012			Gross		Gross
	Amortized		Unrealized		Unrealized		Fair
(in millions)	Cost		Gains		Losses		Value
Fixed maturities
USD denominated:
U.S. Governments	$	401.1	$	9.3	$	0.0	$	410.4
Non-U.S. Governments		53.1		3.6		0.1		56.6
Obligations of states and political subdivisions		551.7		44.9		0.5		596.1
Credit-Financial		382.4		25.7		0.7		407.4
Credit-Industrial		428.4		31.1		0.7		458.8
Credit-Utility		189.9		12.6		0.4		202.1
Structured securities:
CMO/MBS-agency (1)		375.1		20.2		0.2		395.1
CMO/MBS-non agency		12.5		1.0		0.2		13.3
CMBS (2)		109.5		5.7		0.2		115.0
ABS-residential (3)		10.1		0.2		0.8		9.5
ABS-non residential		81.3		1.2		0.0		82.5
Foreign denominated:
Governments		262.1		9.2		4.3		267.0
Credit		135.9		6.1		1.8		140.2
Total fixed maturities		2,993.1		170.8		9.9		3,154.0
Equity securities		373.5		153.0		5.1		521.4
Other investments		294.8		1.2		5.0		291.0
Short-term investments		234.3		0.1		0.1		234.3
Total investments	$	3,895.7	$	325.1	$	20.1	$	4,200.7

⁽¹⁾  Collateralized mortgage obligations/mortgage-backed securities (“CMO/MBS”).

⁽²⁾  Commercial mortgage-backed securities (“CMBS”).

⁽³⁾  Asset-backed securities (“ABS”).

Schedule of Amortized Cost and Fair Values of Fixed Maturity Investments, by Contractual Maturity

The amortized cost and fair values of fixed maturity investments as of December 31, 2013, by contractual maturity, were as follows:

	Amortized		Fair
(in millions)	Cost		Value
Due in one year or less	$	223.7	$	225.5
Due after one year through five years		1,245.7		1,268.7
Due after five years through ten years		549.1		570.3
Thereafter		216.5		214.2
Structured securities		525.1		535.7
Total	$	2,760.1	$	2,814.4

Schedule of Aging of Unrealized Losses on Company's Investments in Fixed Maturities, Equity Securities and Other Investments

An aging of unrealized losses on our investments in fixed maturities, equity securities, other investments and short-term investments as of December 31 is presented below:

December 31, 2013	Less Than One Year					One Year or Greater				Total
	Fair			Unrealized		Fair		Unrealized		Fair			Unrealized
(in millions)	Value			Losses		Value		Losses		Value			Losses
Fixed maturities
USD denominated:
U.S. Governments	$	55.3		$	0.5	$	0.0	$	0.0	$	55.3		$	0.5
Non-U.S. Governments		36.3			1.0		0.0		0.0		36.3			1.0
Obligations of states and political subdivisions (2)		154.6			8.8		3.1		0.0		157.7			8.8
Credit-Financial		88.7			1.7		2.4		0.1		91.1			1.8
Credit-Industrial		85.7			2.0		2.9		0.2		88.6			2.2
Credit-Utility		21.2			0.7		1.9		0.1		23.1			0.8
Structured securities:
CMO/MBS-agency		58.4			1.2		5.6		0.5		64.0			1.7
CMBS (2)		24.2			1.0		1.1		0.0		25.3			1.0
ABS-residential		0.0			0.0		3.6		0.5		3.6			0.5
ABS-non residential (2)		59.1			0.1		2.0		0.0		61.1			0.1
Foreign denominated:
Governments		170.5			5.9		0.0		0.0		170.5			5.9
Credit		125.3			4.8		0.0		0.0		125.3			4.8
Total fixed maturities		879.3			27.7		22.6		1.4		901.9			29.1
Equity securities		25.5			1.2		0.0		0.0		25.5			1.2
Other investments		(1.4	)		1.3		0.0		0.0		(1.4	)		1.3
Short-term investments (1)		4.5			0.0		0.0		0.0		4.5			0.0
Total		$907.9			$30.2		$22.6		$1.4		$930.5			$31.6

⁽¹⁾  Unrealized losses less than one year are less than $0.1 million.

⁽²⁾  Unrealized losses one year or greater are less than $0.1 million

December 31, 2012	Less Than One Year				One Year or Greater				Total
	Fair		Unrealized		Fair		Unrealized		Fair		Unrealized
(in millions)	Value		Losses		Value		Losses		Value		Losses
Fixed maturities
USD denominated:
U.S. Governments (1)	$	11.9	$	0.0	$	0.0	$	0.0	$	11.9	$	0.0
Non-U.S. Governments (2)		8.5		0.1		0.5		0.0		9.0		0.1
Obligations of states and political subdivisions		28.2		0.3		0.8		0.2		29.0		0.5
Credit-Financial		25.0		0.2		8.6		0.5		33.6		0.7
Credit-Industrial		32.2		0.4		3.0		0.3		35.2		0.7
Credit-Utility		8.4		0.2		0.8		0.2		9.2		0.4
Structured securities:
CMO/MBS-agency (2)		26.4		0.2		0.3		0.0		26.7		0.2
CMO/MBS-non agency		1.7		0.2		0.0		0.0		1.7		0.2
CMBS (1)		5.7		0.0		3.5		0.2		9.2		0.2
ABS-residential		0.0		0.0		3.9		0.8		3.9		0.8
ABS-non residential (1) (2)		13.7		0.0		0.2		0.0		13.9		0.0
Foreign denominated:
Governments (2)		180.5		4.3		0.3		0.0		180.8		4.3
Credit		76.3		1.8		0.0		0.0		76.3		1.8
Total fixed maturities		418.5		7.7		21.9		2.2		440.4		9.9
Equity securities		60.2		4.2		6.3		0.9		66.5		5.1
Other investments		11.6		5.0		0.0		0.0		11.6		5.0
Short-term investments		0.0		0.1		0.0		0.0		0.0		0.1
Total	$	490.3	$	17.0	$	28.2	$	3.1	$	518.5	$	20.1

⁽¹⁾  Unrealized losses less than one year are less than $0.1 million.

⁽²⁾  Unrealized losses one year or greater are less than $0.1 million.

Schedule of Investment Income and Expenses

Investment income and expenses for the years ended December 31 were as follows:

(in millions)	2013			2012			2011
Investment income:
Interest and dividends on fixed maturities	$	87.7		$	105.9		$	121.4
Dividends on equity securities		17.7			15.2			9.6
Interest on short-term and other investments		5.0			7.3			4.7
Other		(1.0	)		(0.4	)		(0.5	)
		109.4			128.0			135.2
Investment expenses		(9.4	)		(9.2	)		(9.4	)
Net investment income	$	100.0		$	118.8		$	125.8

Schedule of Company's Gross Realized Investment Gains (Losses)

The following table presents our gross realized investment and other gains (losses) for the years ended December 31:

(in millions)	2013			2012			2011
Realized gains
Fixed maturities	$	33.5		$	27.2		$	30.5
Equity securities		59.1			0.4			26.6
Other investments		38.9			21.5			16.1
Short-term investments		0.1			0.5			1.0
Gain on sale of affiliate		0.0			4.8			0.0
Gross realized investment and other gains		131.6			54.4			74.2
Realized losses
Fixed maturities		(19.6	)		(9.1	)		(11.6	)
Equity securities		(1.4	)		(0.5	)		(0.7	)
Other investments		(30.8	)		(15.1	)		(10.5	)
Short-term investments		(0.7	)		(0.3	)		(1.0	)
Other-than-temporary impairment losses on fixed maturities		(6.0	)		(1.5	)		(0.1	)
Other-than-temporary impairment losses on equity securities		(1.8	)		(2.2	)		(1.1	)
Gross realized investment and other losses		(60.3)			(28.7)			(25.0)
Net realized investment and other gains		$71.3			$25.7			$49.2

Securities and Letters of Credit Pledged to Lloyd's as Company's Corporate Member's Capital

At December 31, our Corporate member’s capital supporting our Lloyd’s business consisted of the following:

(in millions)	2013		2012
Fixed maturities, at fair value	$	250.7	$	200.3
Short-term investments, at fair value		0.1		3.6
Letters of credit		0.0		124.9
Total securities and letters of credit pledged to Lloyd’s	$	250.8	$	328.8

Financial Assets Measured at Fair Value on Recurring Basis

Based on an analysis of the inputs, our financial assets measured at fair value on a recurring basis at December 31, 2013 and 2012 have been categorized as follows:

			Fair Value Measurements at Reporting Date Using
(in millions)	December 31, 2013		Level 1 (a)		Level 2 (b)		Level 3 (c)
Fixed maturities
USD denominated:
U.S. Governments	$	275.3	$	143.8	$	131.5	$	0.0
Non-U.S. Governments		60.2		0.0		60.2		0.0
Obligations of states and political subdivisions		577.8		0.0		577.8		0.0
Credit-Financial		439.9		0.0		439.9		0.0
Credit-Industrial		397.1		0.0		397.1		0.0
Credit-Utility		166.6		0.0		166.6		0.0
Structured securities:
CMO/MBS-agency		226.9		0.0		226.9		0.0
CMO/MBS-non agency		20.2		0.0		20.2		0.0
CMBS		164.8		0.0		164.8		0.0
ABS-residential		6.6		0.0		6.6		0.0
ABS-non residential		117.2		0.0		117.2		0.0
Foreign denominated:
Governments		206.7		0.0		206.7		0.0
Credit		155.1		0.0		155.1		0.0
Total fixed maturities		2,814.4		143.8		2,670.6		0.0
Equity securities		534.3		476.7		56.3		1.3
Other investments		117.8		0.0		117.8		0.0
Short-term investments		351.6		347.0		4.6		0.0
Other assets		2.6		0.0		0.0		2.6
	$	3,820.7	$	967.5	$	2,849.3	$	3.9

^(a)  Quoted prices in active markets for identical assets

^(b)  Significant other observable inputs

^(c)  Significant unobservable inputs

			Fair Value Measurements at Reporting Date Using
(in millions)	December 31, 2012		Level 1 (a)		Level 2 (b)		Level 3 (c)
Fixed maturities
USD denominated:
U.S. Governments	$	410.4	$	219.5	$	190.9	$	0.0
Non-U.S. Governments		56.6		0.0		56.6		0.0
Obligations of states and political subdivisions		596.1		0.0		596.1		0.0
Credit-Financial		407.4		0.0		407.4		0.0
Credit-Industrial		458.8		0.0		458.8		0.0
Credit-Utility		202.1		0.0		202.1		0.0
Structured securities:
CMO/MBS-agency		395.1		0.0		395.1		0.0
CMO/MBS-non agency		13.3		0.0		13.3		0.0
CMBS		115.0		0.0		115.0		0.0
ABS-residential		9.5		0.0		9.5		0.0
ABS-non residential		82.5		0.0		82.5		0.0
Foreign denominated:
Governments		267.0		0.0		267.0		0.0
Credit		140.2		0.0		140.2		0.0
Total fixed maturities		3,154.0		219.5		2,934.5		0.0
Equity securities		521.4		469.0		50.6		1.8
Other investments		132.0		0.0		132.0		0.0
Short-term investments		234.3		201.1		33.2		0.0
Other assets		6.9		0.0		0.0		6.9
	$	4,048.6	$	889.6	$	3,150.3	$	8.7

^(a)  Quoted prices in active markets for identical assets

^(b)  Significant other observable inputs

^(c)  Significant unobservable inputs

Schedule of Reconciliation of Beginning and Ending Balances for Investments Categorized as Level 3

A reconciliation of the beginning and ending balances for the investments categorized as Level 3 at December 31, 2013 and 2012 are as follows:

(in millions)	Equity Securities			Other Assets			Total
Beginning balance, January 1, 2013	$	1.8		$	6.9		$	8.7
Transfers into Level 3		0.0			0.0			0.0
Transfers out of Level 3		0.0			0.0			0.0
Total gains or losses (realized/unrealized):
Included in net income (loss)		0.1			0.0			0.1
Included in other comprehensive income (loss)		0.0			0.0			0.0
Purchases, issuances, sales, and settlements
Purchases		0.0			0.0			0.0
Issuances		0.0			0.0			0.0
Sales		(0.6	)		0.0			(0.6	)
Settlements		0.0			(4.3	)		(4.3	)
Ending balance, December 31, 2013	$	1.3		$	2.6		$	3.9
Amount of total gains or losses for the year included in net income (loss) attributable to the change in unrealized gains or losses relating to assets still held at December 31, 2013	$	0.0		$	0.0		$	0.0

Fair Value Measurements Using Unobservable Inputs (Level 3)

(in millions)	Credit Financial			Equity Securities			Other Assets			Total
Beginning balance, January 1, 2012	$	0.7		$	2.4		$	9.0		$	12.1
Transfers into Level 3		0.0			0.0			0.0			0.0
Transfers out of Level 3		0.0			0.0			0.0			0.0
Total gains or losses (realized/unrealized):
Included in net income (loss)		0.1			0.0			0.0			0.1
Included in other comprehensive income (loss)		0.0			0.0			0.0			0.0
Purchases, issuances, sales, and settlements
Purchases		0.0			0.0			0.0			0.0
Issuances		0.0			0.0			0.0			0.0
Sales		(0.8	)		(0.6	)		0.0			(1.4	)
Settlements		0.0			0.0			(2.1	)		(2.1	)
Ending balance, December 31, 2012	$	0.0		$	1.8		$	6.9		$	8.7
Amount of total gains or losses for the year included in net income (loss) attributable to the change in unrealized gains or losses relating to assets still held at December 31, 2012	$	0.0		$	0.0		$	0.0		$	0.0

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Schedule II - Schedule of Statements of Income (Parenthetical) (Detail) (Registrant [Member], USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2011
Registrant [Member]
Condensed Financial Statements, Captions [Line Items]
Intercompany dividend	$ 84.5	$ 100.0

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Share-based Compensation - Summary of Option Activity Under Amended Plan (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercised, shares	497,652
Cash-Settled SARs Activity [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares, Outstanding at January 1, 2013	1,886,615
Granted, Shares	556,107
Exercised, shares	(497,652)
Expired or forfeited, Shares	(201,312)
Shares, Outstanding at December 31, 2013	1,743,758
Vested or expected to vest as of year end, Shares	1,480,261
Exercisable at end of year, Shares	381,310
Weighted-Average Exercise Price, Outstanding at January 1, 2013	$ 29.76
Granted, Weighted-Average Exercise Price	$ 39.73
Exercised, Weighted-Average Exercise Price	$ 29.49
Expired or forfeited, Weighted-Average Exercise Price	$ 29.91
Weighted-Average Exercise Price, Outstanding at December 31, 2013	$ 33.00
Vested or expected to vest as of year end, Weighted-Average Exercise Price	$ 32.83
Exercisable at end of year, Weighted-Average Exercise Price	$ 29.57

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Statutory Accounting Principles (Tables)

12 Months Ended

Dec. 31, 2013

Text Block [Abstract]

Statutory Capital and Surplus for Principal Operating Subsidiaries

The statutory capital and surplus for our principal operating subsidiaries at December 31, 2013 and 2012 was as follows:

Statutory capital and surplus (1)	December 31,
(in millions)	2013		2012
Bermuda	$	1,218.2	$	1,180.1
United Kingdom (2)		225.8		227.7
United States		822.3		781.3

⁽¹⁾  Such amounts include ownership interests in affiliate insurance and reinsurance subsidiaries.

⁽²⁾  Capital on deposit with Lloyd’s in U.S. Dollars

Statutory Net Income (Loss) for Principal Operating Subsidiaries

The statutory net income (loss) for our principal operating subsidiaries for 2013, 2012 and 2011 was as follows:

Statutory net income (loss) (1)	For the Years Ended December 31,
(in millions)	2013		2012			2011
Bermuda	$	85.1	$	(4.2	)	$	(47.7	)
United Kingdom (2)		42.3		40.7			(63.4	)
United States		117.4		42.9			67.0

⁽¹⁾  Such amounts include ownership interests in affiliate insurance and reinsurance subsidiaries.

⁽²⁾  In U.S. Dollars

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Underwriting, Acquisition and Insurance Expenses (Tables)

12 Months Ended

Dec. 31, 2013

Text Block [Abstract]

Underwriting, Acquisition and Insurance Expenses

Underwriting, acquisition and insurance expenses for the years ended December 31, 2013, 2012 and 2011 were as follows:

(in millions)	2013			2012			2011
Commissions	$	229.6		$	198.2		$	183.2
General expenses		272.8			248.0			210.1
Premium taxes, boards and bureaus		24.2			22.8			24.7
		526.6			469.0			418.0
Net (deferral) amortization of policy acquisition costs		(15.8	)		(4.5	)		7.7
Total underwriting, acquisition and insurance expenses	$	510.8		$	464.5		$	425.7

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Segment Information - Schedule of Goodwill and Intangible Assets Net of Accumulated Amortization (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Sales Information [Line Items]
Goodwill	$ 153.8	$ 153.8
Intangible assets, net of accumulated amortization	86.0	91.5
Excess and Surplus Lines [Member]
Sales Information [Line Items]
Goodwill	76.4	76.4
Intangible assets, net of accumulated amortization	3.4	4.0
Commercial Specialty [Member]
Sales Information [Line Items]
Goodwill	48.7	48.7
Intangible assets, net of accumulated amortization	9.0	10.4
Syndicate 1200 [Member]
Sales Information [Line Items]
Goodwill	28.7	28.7
Intangible assets, net of accumulated amortization	$ 73.6	$ 77.1

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Investments - Financial Assets Measured at Fair Value on Recurring Basis (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	$ 4,079.2	$ 4,200.7
Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	3,820.7	4,048.6
Other investments [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	378.9	291.0
Other investments [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	117.8	132.0
Other Assets [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	2.6	6.9
Fixed maturities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	2,814.4	3,154.0
Fixed maturities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	2,814.4	3,154.0
Fixed maturities [Member] | U.S. Governments [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	275.3	410.4
Fixed maturities [Member] | U.S. Governments [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	275.3	410.4
Fixed maturities [Member] | Non-U.S. Governments [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	60.2	56.6
Fixed maturities [Member] | Non-U.S. Governments [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	60.2	56.6
Fixed maturities [Member] | Obligations of states and political subdivisions [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	577.8	596.1
Fixed maturities [Member] | Obligations of states and political subdivisions [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	577.8	596.1
Fixed maturities [Member] | Credit-Financial [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	439.9	407.4
Fixed maturities [Member] | Credit-Financial [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	439.9	407.4
Fixed maturities [Member] | Credit-Industrial [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	397.1	458.8
Fixed maturities [Member] | Credit-Industrial [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	397.1	458.8
Fixed maturities [Member] | Credit-Utility [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	166.6	202.1
Fixed maturities [Member] | Credit-Utility [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	166.6	202.1
Fixed maturities [Member] | CMO/MBS-agency [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	226.9	395.1
Fixed maturities [Member] | CMO/MBS-agency [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	226.9	395.1
Fixed maturities [Member] | CMO/MBS-non agency [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	20.2	13.3
Fixed maturities [Member] | CMO/MBS-non agency [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	20.2	13.3
Fixed maturities [Member] | CMBS [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	164.8	115.0
Fixed maturities [Member] | CMBS [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	164.8	115.0
Fixed maturities [Member] | ABS-residential [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	6.6	9.5
Fixed maturities [Member] | ABS-residential [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	6.6	9.5
Fixed maturities [Member] | ABS-non residential [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	117.2	82.5
Fixed maturities [Member] | ABS-non residential [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	117.2	82.5
Fixed maturities [Member] | Foreign denominated: Governments [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	206.7	267.0
Fixed maturities [Member] | Foreign denominated: Governments [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	206.7	267.0
Fixed maturities [Member] | Foreign Denominated: Credit [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	155.1	140.2
Fixed maturities [Member] | Foreign Denominated: Credit [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	155.1	140.2
Equity securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	534.3	521.4
Equity securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	534.3	521.4
Short-Term Investments [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	351.6	234.3
Short-Term Investments [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	351.6	234.3
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	967.5	889.6
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Other investments [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	0	0
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Other Assets [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	0	0
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Fixed maturities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	143.8	219.5
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Fixed maturities [Member] | U.S. Governments [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	143.8	219.5
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Fixed maturities [Member] | Non-U.S. Governments [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	0	0
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Fixed maturities [Member] | Obligations of states and political subdivisions [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	0	0
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Fixed maturities [Member] | Credit-Financial [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	0	0
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Fixed maturities [Member] | Credit-Industrial [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	0	0
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Fixed maturities [Member] | Credit-Utility [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	0	0
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Fixed maturities [Member] | CMO/MBS-agency [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	0	0
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Fixed maturities [Member] | CMO/MBS-non agency [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	0	0
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Fixed maturities [Member] | CMBS [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	0	0
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Fixed maturities [Member] | ABS-residential [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	0	0
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Fixed maturities [Member] | ABS-non residential [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	0	0
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Fixed maturities [Member] | Foreign denominated: Governments [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	0	0
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Fixed maturities [Member] | Foreign Denominated: Credit [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	0	0
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Equity securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	476.7	469.0
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Short-Term Investments [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	347.0	201.1
Significant Other Observable Inputs (Level 2) [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	2,849.3	3,150.3
Significant Other Observable Inputs (Level 2) [Member] | Other investments [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	117.8	132.0
Significant Other Observable Inputs (Level 2) [Member] | Other Assets [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	0	0
Significant Other Observable Inputs (Level 2) [Member] | Fixed maturities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	2,670.6	2,934.5
Significant Other Observable Inputs (Level 2) [Member] | Fixed maturities [Member] | U.S. Governments [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	131.5	190.9
Significant Other Observable Inputs (Level 2) [Member] | Fixed maturities [Member] | Non-U.S. Governments [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	60.2	56.6
Significant Other Observable Inputs (Level 2) [Member] | Fixed maturities [Member] | Obligations of states and political subdivisions [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	577.8	596.1
Significant Other Observable Inputs (Level 2) [Member] | Fixed maturities [Member] | Credit-Financial [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	439.9	407.4
Significant Other Observable Inputs (Level 2) [Member] | Fixed maturities [Member] | Credit-Industrial [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	397.1	458.8
Significant Other Observable Inputs (Level 2) [Member] | Fixed maturities [Member] | Credit-Utility [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	166.6	202.1
Significant Other Observable Inputs (Level 2) [Member] | Fixed maturities [Member] | CMO/MBS-agency [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	226.9	395.1
Significant Other Observable Inputs (Level 2) [Member] | Fixed maturities [Member] | CMO/MBS-non agency [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	20.2	13.3
Significant Other Observable Inputs (Level 2) [Member] | Fixed maturities [Member] | CMBS [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	164.8	115.0
Significant Other Observable Inputs (Level 2) [Member] | Fixed maturities [Member] | ABS-residential [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	6.6	9.5
Significant Other Observable Inputs (Level 2) [Member] | Fixed maturities [Member] | ABS-non residential [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	117.2	82.5
Significant Other Observable Inputs (Level 2) [Member] | Fixed maturities [Member] | Foreign denominated: Governments [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	206.7	267.0
Significant Other Observable Inputs (Level 2) [Member] | Fixed maturities [Member] | Foreign Denominated: Credit [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	155.1	140.2
Significant Other Observable Inputs (Level 2) [Member] | Equity securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	56.3	50.6
Significant Other Observable Inputs (Level 2) [Member] | Short-Term Investments [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	4.6	33.2
Significant Unobservable Inputs (Level 3) [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	3.9	8.7
Significant Unobservable Inputs (Level 3) [Member] | Other investments [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	0	0
Significant Unobservable Inputs (Level 3) [Member] | Other Assets [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	2.6	6.9
Significant Unobservable Inputs (Level 3) [Member] | Fixed maturities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	0	0
Significant Unobservable Inputs (Level 3) [Member] | Fixed maturities [Member] | U.S. Governments [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	0	0
Significant Unobservable Inputs (Level 3) [Member] | Fixed maturities [Member] | Non-U.S. Governments [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	0	0
Significant Unobservable Inputs (Level 3) [Member] | Fixed maturities [Member] | Obligations of states and political subdivisions [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	0	0
Significant Unobservable Inputs (Level 3) [Member] | Fixed maturities [Member] | Credit-Financial [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	0	0
Significant Unobservable Inputs (Level 3) [Member] | Fixed maturities [Member] | Credit-Industrial [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	0	0
Significant Unobservable Inputs (Level 3) [Member] | Fixed maturities [Member] | Credit-Utility [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	0	0
Significant Unobservable Inputs (Level 3) [Member] | Fixed maturities [Member] | CMO/MBS-agency [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	0	0
Significant Unobservable Inputs (Level 3) [Member] | Fixed maturities [Member] | CMO/MBS-non agency [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	0	0
Significant Unobservable Inputs (Level 3) [Member] | Fixed maturities [Member] | CMBS [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	0	0
Significant Unobservable Inputs (Level 3) [Member] | Fixed maturities [Member] | ABS-residential [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	0	0
Significant Unobservable Inputs (Level 3) [Member] | Fixed maturities [Member] | ABS-non residential [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	0	0
Significant Unobservable Inputs (Level 3) [Member] | Fixed maturities [Member] | Foreign denominated: Governments [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	0	0
Significant Unobservable Inputs (Level 3) [Member] | Fixed maturities [Member] | Foreign Denominated: Credit [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	0	0
Significant Unobservable Inputs (Level 3) [Member] | Equity securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	1.3	1.8
Significant Unobservable Inputs (Level 3) [Member] | Short-Term Investments [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	$ 0	$ 0

XML

Run-Off Lines - Net Underwriting Results for Run-Off Lines (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total Asbestos and Environmental	$ (11.0)	$ (9.1)	$ (11.7)
Total Run-off Lines	19.6	10.9	16.8
Reinsurance Assumed [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total Asbestos and Environmental	(3.8)	(3.6)	(6.7)
Other [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total Asbestos and Environmental	(7.2)	(5.5)	(5.0)
Risk Management [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total Run-off Lines	(5.9)	0.9	2.6
Run-off reinsurance lines [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total Run-off Lines	1.9	1.1	5.5
Other Run-Off Lines [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total Run-off Lines	$ 0.8	$ 1.6	$ 2.2

XML

Disclosures about Fair Value of Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2013

Fair Value Disclosures [Abstract]

Summary of Company's Financial Instruments Whose Carrying Amount Did Not Equal Fair Value

A summary of our financial instruments whose carrying value did not equal fair value at December 31, 2013 and 2012 is shown below:

	December 31, 2013				December 31, 2012
(in millions)	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Junior subordinated debentures	$	193.3	$	155.5	$	193.3	$	151.8
Senior unsecured fixed rate notes		143.8		116.2		143.8		143.2
Other indebtedness:
Floating rate loan stock		65.5		52.7		63.0		49.5
Note payable		0.8		0.6		0.8		0.6
	$	403.4	$	325.0	$	400.9	$	345.1

XML

Income Taxes - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Contingency [Line Items]
Adjustment for prior year tax return	$ (1,600,000)	$ 200,000	$ 1,600,000
Prior year foreign taxes recovered	(1,100,000)	0	600,000
Foreign exchange adjustments	500,000	500,000	300,000
Deferred tax decreased and Increase balance	(15,100,000)	25,300,000	16,100,000
Total net deferred tax assets	27,500,000	8,700,000
Capital loss carryforward	29,800,000	30,700,000
Net operating loss carryforward	18,800,000
Valuation allowance	56,200,000	52,500,000
Loss carryforwards per year	2,800,000
Unrecognized tax benefits	0	0	0
ARIS [Member]
Income Tax Contingency [Line Items]
Net operating loss carryforward	1,000,000
Malta [Member]
Income Tax Contingency [Line Items]
Valuation allowance	1,700,000
Increased valuation allowance	600,000
Brazil [Member]
Income Tax Contingency [Line Items]
Valuation allowance	8,000,000
Increased valuation allowance	4,100,000
December 31, 2025 [Member]
Income Tax Contingency [Line Items]
Loss carryforwards, amounts expiring if not utilized	17,200,000
December 31, 2027 [Member]
Income Tax Contingency [Line Items]
Loss carryforwards, amounts expiring if not utilized	1,500,000
December 31, 2027 [Member] | ARIS [Member]
Income Tax Contingency [Line Items]
Loss carryforwards, amounts expiring if not utilized	200,000
December Thirty First Two Thousand Thirty [Member] | ARIS [Member]
Income Tax Contingency [Line Items]
Loss carryforwards, amounts expiring if not utilized	400,000
December 31, 2029 [Member] | ARIS [Member]
Income Tax Contingency [Line Items]
Loss carryforwards, amounts expiring if not utilized	400,000
PXRE Reinsurance Company [Member]
Income Tax Contingency [Line Items]
Valuation allowance	46,500,000
Reduced valuation allowance	$ 1,000,000

XML

Pension Benefits - Schedule of Fair Value Measurement (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Total	$ 20.2	$ 20.1	$ 19.7
Mutual Funds [Member] | Large Cap U.S. Equity [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Total	3.2	2.6
Mutual Funds [Member] | Small-Mid Cap U.S. Equity [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Total	1.4	1.0
Mutual Funds [Member] | International Equity [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Total	1.5	1.3
Mutual Funds [Member] | Real Estate [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Total	0.5	0.5
Mutual Funds [Member] | Convertible Bonds And Equities [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Total	0.2	0.1
Mutual Funds [Member] | U.S. and Global Government and Corporate Fixed Income [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Total	12.9	13.9
Cash And Short-Term Investments [Member] | Short-Term Investments [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Total		0.7
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Total	19.7	19.4
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Mutual Funds [Member] | Large Cap U.S. Equity [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Total	3.2	2.6
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Mutual Funds [Member] | Small-Mid Cap U.S. Equity [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Total	1.4	1.0
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Mutual Funds [Member] | International Equity [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Total	1.5	1.3
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Mutual Funds [Member] | Real Estate [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Total	0.5	0.5
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Mutual Funds [Member] | Convertible Bonds And Equities [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Total	0.2	0.1
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Mutual Funds [Member] | U.S. and Global Government and Corporate Fixed Income [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Total	12.9	13.9
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Cash And Short-Term Investments [Member] | Short-Term Investments [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Total		0
Significant Other Observable Inputs (Level 2) [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Total	0.5	0.7
Significant Other Observable Inputs (Level 2) [Member] | Mutual Funds [Member] | Large Cap U.S. Equity [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Total	0	0
Significant Other Observable Inputs (Level 2) [Member] | Mutual Funds [Member] | Small-Mid Cap U.S. Equity [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Total	0	0
Significant Other Observable Inputs (Level 2) [Member] | Mutual Funds [Member] | International Equity [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Total	0	0
Significant Other Observable Inputs (Level 2) [Member] | Mutual Funds [Member] | Real Estate [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Total	0	0
Significant Other Observable Inputs (Level 2) [Member] | Mutual Funds [Member] | Convertible Bonds And Equities [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Total	0	0
Significant Other Observable Inputs (Level 2) [Member] | Mutual Funds [Member] | U.S. and Global Government and Corporate Fixed Income [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Total	0	0
Significant Other Observable Inputs (Level 2) [Member] | Cash And Short-Term Investments [Member] | Short-Term Investments [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Total		0.7
Significant Unobservable Inputs (Level 3) [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Total	0	0
Significant Unobservable Inputs (Level 3) [Member] | Mutual Funds [Member] | Large Cap U.S. Equity [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Total	0	0
Significant Unobservable Inputs (Level 3) [Member] | Mutual Funds [Member] | Small-Mid Cap U.S. Equity [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Total	0	0
Significant Unobservable Inputs (Level 3) [Member] | Mutual Funds [Member] | International Equity [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Total	0	0
Significant Unobservable Inputs (Level 3) [Member] | Mutual Funds [Member] | Real Estate [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Total	0	0
Significant Unobservable Inputs (Level 3) [Member] | Mutual Funds [Member] | Convertible Bonds And Equities [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Total	0	0
Significant Unobservable Inputs (Level 3) [Member] | Mutual Funds [Member] | U.S. and Global Government and Corporate Fixed Income [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Total	0	0
Significant Unobservable Inputs (Level 3) [Member] | Cash And Short-Term Investments [Member] | Short-Term Investments [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Total		$ 0

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Net Income (Loss) Per Common Share (Tables)

12 Months Ended

Dec. 31, 2013

Earnings Per Share [Abstract]

Net Income (Loss) Per Common Share on Basic and Diluted Basis

The following table presents the calculation of net income (loss) per common share on a basic and diluted basis for the years ended December 31, 2013, 2012 and 2011:

(in millions, except number of shares and per share amounts)	2013		2012		2011
Net income (loss)	$	143.2	$	52.3	$	(81.9	)
Weighted average common shares outstanding—basic		26,851,341		28,095,210		29,887,249
Effect of dilutive securities:
Equity compensation awards		1,018,192		555,238		0
Weighted average common shares outstanding—diluted		27,869,533		28,650,448		29,887,249
Net income (loss) per common share—basic	$	5.33	$	1.86	$	(2.74	)
Net income (loss) per common share—diluted	$	5.14	$	1.83	$	(2.74	)

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Schedule II Condensed Financial Information of Registrant

12 Months Ended

Dec. 31, 2013

Condensed Financial Information Of Parent Company Only Disclosure [Abstract]

Schedule II Condensed Financial Information of Registrant

ARGO GROUP INTERNATIONAL HOLDINGS, LTD.

SCHEDULE II

CONDENSED FINANCIAL INFORMATION OF REGISTRANT

(in millions)

BALANCE SHEETS

	December 31,
	2013			2012
Assets
Other investments, unrealized loss on foreign currency exchange forward contracts	$	(1.4	)	$	(1.9	)
Short-term investments		2.5			1.0
Investment in subsidiaries		1,625.2			1,621.1
Due from subsidiaries		3.1			5.0
Other assets		4.6			4.3
Total assets	$	1,634.0		$	1,629.5
Liabilities and Shareholders’ Equity
Junior subordinated debentures	$	49.0		$	49.0
Intercompany note payable		6.6			55.1
Accrued underwriting expenses		15.4			10.8
Other liabilities		0.0			0.5
Total liabilities		71.0			115.4
Shareholders’ equity		1,563.0			1,514.1
Total liabilities and shareholders’ equity	$	1,634.0		$	1,629.5

STATEMENTS OF INCOME (LOSS)

	For the Years Ended December 31,
	2013		2012			2011
Revenue:
Net investment income (1)	$	84.5	$	0.1		$	100.1
Net realized investment losses		0.0		(0.8	)		0.0
Total revenue		84.5		(0.7	)		100.1
Expenses:
Interest expense		3.3		3.9			5.4
Debt extinguishment costs		0.0		0.1			0.0
Other expenses		27.4		27.1			22.6
Total expenses		30.7		31.1			28.0
Net income (loss) before equity in earnings (losses) of subsidiaries (2)		53.8		(31.8	)		72.1
Equity in undistributed earnings (losses) of subsidiaries		89.4		84.1			(154.0	)
Net income (loss)	$	143.2	$	52.3		$	(81.9	)

⁽¹⁾ For the year ended December 31, 2013 and 2011, net investment income includes intercompany dividend activity of $84.5 million and $100.0 million, respectively.

⁽²⁾ Argo Group International Holdings, Ltd. is not subject to taxation.

ARGO GROUP INTERNATIONAL HOLDINGS, LTD.

SCHEDULE II

CONDENSED FINANCIAL INFORMATION OF REGISTRANT

(in millions)

STATEMENTS OF CASH FLOWS

	For the Years Ended December 31,
	2013			2012			2011
Cash flows from operating activities:
Net income (loss)	$	143.2		$	52.3		$	(81.9	)
Adjustments to reconcile net income (loss) to net cash provided (used) by operating activities:
Amortization and depreciation		0.7			0.9			0.8
Share-based payments expense		8.7			4.8			2.6
Debt extinguishment costs		0.0			0.1			0.0
Undistributed (earnings) losses of subsidiaries		(89.4	)		(84.1	)		154.0
Change in:
Prepaid assets		(0.1	)		0.9			(0.8	)
Accrued underwriting expenses		(0.9	)		0.9			(1.6	)
Due to subsidiaries		0.2			(7.0	)		(3.2	)
Interest on intercompany note payable		0.8			0.3			1.7
Other assets and liabilities, net		0.0			0.7			0.0
Cash provided (used) by operating activities		63.2			(30.2	)		71.6
Cash flows from investing activities:
Change in short-term investments		(1.4	)		(0.9	)		0.0
Settlements of foreign currency exchange forward contracts		0.7			2.3			1.3
Purchases of fixed assets		0.0			0.0			(0.3	)
Cash (used) provided by investing activities		(0.7	)		1.4			1.0
Cash flows from financing activities:
Borrowings under intercompany note payable, net		(49.3	)		55.0			(60.6	)
Activity under stock incentive plans		2.6			1.2			1.1
Redemption of trust preferred securities, net		0.0			(15.1	)		0.0
Payment of cash dividend to common shareholders		(15.8	)		(12.3	)		(13.1	)
Cash (used) provided by financing activities		(62.5	)		28.8			(72.6	)
Change in cash		0.0			0.0			0.0
Cash, beginning of year		0.0			0.0			0.0
Cash, end of year	$	0.0		$	0.0		$	0.0

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Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Income Tax Examination [Line Items]
Unrealized losses on fixed maturities and other investment securities	$ 0	$ 0.4
Losses and loss adjustment expense reserve discounting	28.4	33.1
Unearned premiums	23.0	23.3
Capital loss carryforward	29.8	30.7
Allowance for bad debt	1.9	1.3
Accrual for contingent commissions	0.4	0.6
Net operating loss carryforward	19.8	19.8
Impairment of investment values	10.6	9.7
United States amortization of intangible assets	3.1	3.3
Accrued bonus	5.7	3.1
Accrued vacation	1.6	2.1
Stock option expense	6.4	4.4
United Kingdom interest	0.8	0.9
Other	7.0	5.2
Deferred tax assets, gross	148.2	142.8
Unrealized gains on equity securities	(65.1)	(51.2)
Unrealized gains on fixed maturities and other investment securities	(16.1)	(47.5)
Deferred acquisition costs	(19.5)	(19.1)
United States amortization of intangible assets	(3.3)	(3.2)
United Kingdom underwriting losses	(4.8)	(3.8)
United Kingdom amortization of intangible assets	(2.8)	(3.8)
Brussels pension	(0.2)	(0.2)
United States state tax	0	(0.3)
Other	(8.9)	(5.0)
Deferred tax liabilities, gross	(120.7)	(134.1)
Deferred tax assets, net before valuation allowance	27.5	8.7
Valuation allowance	(56.2)	(52.5)
Deferred tax liabilities, net	(28.7)	(43.8)
Net deferred tax liabilities - Foreign	(7.0)	(7.0)
Net deferred tax (liabilities) assets - United States	(21.7)	(36.8)
Deferred tax liabilities, net	(28.7)	(43.8)
Brazil [Member]
Income Tax Examination [Line Items]
Operating losses	8.0	3.9
Malta [Member]
Income Tax Examination [Line Items]
Operating losses	$ 1.7	$ 1.0

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Segment Information - Schedule of Earned Premiums by Geographic Location (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Revenues from External Customers and Long-Lived Assets [Line Items]
Total earned premiums	$ 1,303.8	$ 1,186.5	$ 1,082.0
Bermuda [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total earned premiums	101.7	120.4	101.5
Brazil [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total earned premiums	38.7	26.6	0
Malta [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total earned premiums	1.8	0.3	0
United Kingdom [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total earned premiums	401.7	320.8	259.3
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total earned premiums	$ 759.9	$ 718.4	$ 721.2

XML

Statutory Accounting Principle - Statutory Capital and Surplus for Principal Operating Subsidiaries (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Bermuda [Member]
Statutory Accounting Practices [Line Items]
Statutory capital and surplus	$ 1,218.2	$ 1,180.1
United Kingdom [Member]
Statutory Accounting Practices [Line Items]
Statutory capital and surplus	225.8	227.7
United States [Member]
Statutory Accounting Practices [Line Items]
Statutory capital and surplus	$ 822.3	$ 781.3

XML

Transactions with Related Parties - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013
Schedule of Other Related Party Transactions [Line Items]
Percentage of investment ownership	100.00%
Kinetica [Member]
Schedule of Other Related Party Transactions [Line Items]
Surety bonds issued	$ 13
Percentage of investment ownership	10.00%

XML

Reinsurance - Schedule of Reinsurance Premium (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Effects of Reinsurance [Line Items]
Net earned premiums	$ 1,303.8	$ 1,186.5	$ 1,082.0
Property and Casualty Insurance [Member]
Effects of Reinsurance [Line Items]
Direct written premiums	1,576.1	1,428.6	1,261.3
Reinsurance ceded to other companies	(537.1)	(501.2)	(473.0)
Reinsurance assumed from other companies	312.3	317.1	283.5
Net written premiums	1,351.3	1,244.5	1,071.8
Direct earned premiums	1,541.0	1,372.2	1,267.6
Reinsurance ceded to other companies	(533.7)	(487.0)	(457.5)
Reinsurance assumed from other companies	296.5	301.3	271.9
Net earned premiums	$ 1,303.8	$ 1,186.5	$ 1,082.0
Percentage of reinsurance assumed to net earned premiums	22.70%	25.40%	25.10%

XML

Shareholders Equity - Schedule of Repurchase of Shares (Detail) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Schedule Of Share Repurchase Programs [Line Items]
Number of shares repurchased	1,098,732	1,488,308	1,607,745
12/14/2012 [Member]
Schedule Of Share Repurchase Programs [Line Items]
Date Trading Plan Initiated	Dec. 14, 2012
2013 Purchase Period	01/01/13-01/17/13
Trading plans purchase period date range start	01/01/13
Trading plans purchase period date range end	01/17/13
Number of shares repurchased	171,480
Average Price of Shares Repurchased	$ 35.41
Total Cost	$ 6.0
Repurchase Authorization Year	2011
03/15/2013 [Member]
Schedule Of Share Repurchase Programs [Line Items]
Date Trading Plan Initiated	Mar. 15, 2013
2013 Purchase Period	03/16/13-05/01/13
Trading plans purchase period date range start	03/16/13
Trading plans purchase period date range end	05/01/13
Number of shares repurchased	205,452
Average Price of Shares Repurchased	$ 40.75
Total Cost	8.3
Repurchase Authorization Year	2011
06/14/2013 [Member]
Schedule Of Share Repurchase Programs [Line Items]
Date Trading Plan Initiated	Jun. 14, 2013
2013 Purchase Period	06/18/13-07/31/13
Trading plans purchase period date range start	06/18/13
Trading plans purchase period date range end	07/31/13
Number of shares repurchased	195,217
Average Price of Shares Repurchased	$ 43.47
Total Cost	$ 8.5
Repurchase Authorization Year	2011

XML

Information Provided in Connection with Outstanding Debt of Subsidiaries (Tables)

12 Months Ended

Dec. 31, 2013

Text Block [Abstract]

Condensed Consolidating Balance Sheet

CONDENSED CONSOLIDATING BALANCE SHEET

December 31, 2013

(in millions)

	Argo Group International Holdings, Ltd (Parent Guarantor)		Argo Group US, Inc. and Subsidiaries (Subsidiary Issuer)		Other Subsidiaries and Eliminations (1)			Consolidating Adjustments  (2)			Total
Assets
Investments	$	1.1	$	2,785.1	$	1,293.0		$	0.0		$	4,079.2
Cash		0.0		132.1		25.3			0.0			157.4
Accrued investment income		0.0		19.7		6.0			0.0			25.7
Premiums receivable		0.0		150.8		197.6			0.0			348.4
Reinsurance recoverables		0.0		1,145.9		117.6			0.0			1,263.5
Goodwill and other intangible assets, net		0.0		137.4		102.4			0.0			239.8
Current income taxes receivable, net		0.0		0.5		(0.5	)		0.0			0.0
Deferred acquisition costs, net		0.0		55.6		58.3			0.0			113.9
Ceded unearned premiums		0.0		88.2		108.1			0.0			196.3
Other assets		4.6		97.8		64.4			0.0			166.8
Due from affiliates		3.1		1.5		(1.5	)		(3.1	)		0.0
Intercompany note receivable		0.0		87.4		(87.4	)		0.0			0.0
Investments in subsidiaries		1,625.2		0.0		0.0			(1,625.2	)		0.0
Total assets	$	1,634.0	$	4,702.0	$	1,883.3		$	(1,628.3	)	$	6,591.0
Liabilities and Shareholders’ Equity
Reserves for losses and loss adjustment expenses	$	0.0	$	2,157.0	$	1,073.3		$	0.0		$	3,230.3
Unearned premiums		0.0		425.5		353.6			0.0			779.1
Funds held and ceded reinsurance payable, net		0.0		642.4		(244.0	)		0.0			398.4
Long-term debt		49.0		288.9		65.5			0.0			403.4
Current income taxes payable, net		0.0		8.9		(3.7	)		0.0			5.2
Deferred tax liabilities, net		0.0		22.8		5.9			0.0			28.7
Accrued underwriting expenses and other liabilities		15.4		98.2		69.3			0.0			182.9
Intercompany note payable		6.6		0.0		0.0			(6.6	)		0.0
Total liabilities		71.0		3,643.7		1,319.9			(6.6	)		5,028.0
Total shareholders’ equity		1,563.0		1,058.3		563.4			(1,621.7	)		1,563.0
Total liabilities and shareholders’ equity	$	1,634.0	$	4,702.0	$	1,883.3		$	(1,628.3	)	$	6,591.0

⁽¹⁾  Includes all other subsidiaries of Argo Group International Holdings, Ltd and all intercompany eliminations

⁽²⁾  Includes all Argo Group parent company eliminations

CONDENSED CONSOLIDATING BALANCE SHEET

December 31, 2012

(in millions)

	Argo Group International Holdings, Ltd (Parent Guarantor)			Argo Group US, Inc. and Subsidiaries (Subsidiary Issuer)		Other Subsidiaries and Eliminations (1)			Consolidating Adjustments  (2)			Total
Assets
Investments	$	(0.9	)	$	2,794.7	$	1,406.9		$	0.0		$	4,200.7
Cash		0.0			73.9		21.9			0.0			95.8
Accrued investment income		0.0			21.3		9.0			0.0			30.3
Premiums receivable		0.0			155.1		205.9			0.0			361.0
Reinsurance recoverables		0.0			1,155.1		165.8			0.0			1,320.9
Goodwill and other intangible assets, net		0.0			139.5		105.8			0.0			245.3
Current income taxes receivable, net		0.0			8.7		4.2			0.0			12.9
Deferred acquisition costs, net		0.0			54.6		44.8			0.0			99.4
Ceded unearned premiums		0.0			85.9		107.7			0.0			193.6
Other assets		4.3			82.7		42.0			0.0			129.0
Due from affiliates		5.0			1.2		(1.2	)		(5.0	)		0.0
Intercompany note receivable		0.0			119.6		(119.6	)		0.0			0.0
Investments in subsidiaries		1,621.1			0.0		0.0			(1,621.1	)		0.0
Total assets	$	1,629.5		$	4,692.3	$	1,993.2		$	(1,626.1	)	$	6,688.9
Liabilities and Shareholders’ Equity
Reserves for losses and loss adjustment expenses	$	0.0		$	2,226.3	$	997.2		$	0.0		$	3,223.5
Unearned premiums		0.0			415.6		314.6			0.0			730.2
Funds held and ceded reinsurance payable, net		0.0			598.4		47.4			0.0			645.8
Long-term debt		49.0			288.9		63.0			0.0			400.9
Deferred tax liabilities, net		0.0			36.8		7.0			0.0			43.8
Accrued underwriting expenses and other liabilities		11.3			84.1		35.2			0.0			130.6
Intercompany note payable		55.1			0.0		0.0			(55.1	)		0.0
Total liabilities		115.4			3,650.1		1,464.4			(55.1	)		5,174.8
Total shareholders’ equity		1,514.1			1,042.2		528.8			(1,571.0	)		1,514.1
Total liabilities and shareholders’ equity	$	1,629.5		$	4,692.3	$	1,993.2		$	(1,626.1	)	$	6,688.9

⁽¹⁾  Includes all other subsidiaries of Argo Group International Holdings, Ltd and all intercompany eliminations

⁽²⁾  Includes all Argo Group parent company eliminations

Condensed Consolidating Statement of (Loss) Income

CONDENSED CONSOLIDATING STATEMENT OF INCOME

FOR THE YEAR ENDED DECEMBER 31, 2013

(in millions)

	Argo  Group International Holdings, Ltd (Parent Guarantor)		Argo Group US, Inc. and Subsidiaries (Subsidiary Issuer)			Other Subsidiaries and Eliminations (1)			Consolidating Adjustments (2)			Total
Premiums and other revenue:
Earned premiums	$	0.0	$	439.9		$	863.9		$	0.0		$	1,303.8
Net investment income (expense)		84.5		73.4			(57.9	)		0.0			100.0
Fee (expense) income, net		0.0		(4.1	)		(0.8	)		0.0			(4.9	)
Net realized investment and other gains (losses)		0.0		72.2			(0.9	)		0.0			71.3
Total revenue		84.5		581.4			804.3			0.0			1,470.2
Expenses:
Losses and loss adjustment expenses		0.0		268.6			473.4			0.0			742.0
Other reinsurance-related expenses		0.0		0.0			19.2			0.0			19.2
Underwriting, acquisition and insurance expenses		27.4		176.9			306.5			0.0			510.8
Interest expense		3.3		15.2			2.9			(1.2	)		20.2
Foreign currency exchange gain		0.0		(0.3	)		(1.4	)		0.0			(1.7	)
Total expenses		30.7		460.4			800.6			(1.2	)		1,290.5
Income before income taxes		53.8		121.0			3.7			1.2			179.7
Provision for income taxes		0.0		34.1			2.4			0.0			36.5
Net income before equity in earnings of subsidiaries		53.8		86.9			1.3			1.2			143.2
Equity in undistributed earnings of subsidiaries		89.4		0.0			0.0			(89.4	)		0.0
Net income	$	143.2	$	86.9		$	1.3		$	(88.2	)	$	143.2

⁽¹⁾  Includes all other subsidiaries of Argo Group International Holdings, Ltd. and all intercompany eliminations

⁽²⁾  Includes all Argo Group parent company eliminations

CONDENSED CONSOLIDATING STATEMENT OF INCOME

FOR THE YEAR ENDED DECEMBER 31, 2012

(in millions)

	Argo Group International Holdings, Ltd (Parent Guarantor)			Argo Group US, Inc. and Subsidiaries (Subsidiary Issuer)		Other Subsidiaries and Eliminations (1)		Consolidating Adjustments (2)			Total
Premiums and other revenue:
Earned premiums	$	0.0		$	434.2	$	752.3	$	0.0		$	1,186.5
Net investment income		0.1			86.6		32.1		0.0			118.8
Fee income, net		0.0			1.3		4.0		0.0			5.3
Net realized investment and other (losses) gains		(0.8	)		19.5		7.0		0.0			25.7
Total revenue		(0.7	)		541.6		795.4		0.0			1,336.3
Expenses:
Losses and loss adjustment expenses		0.0			300.6		447.0		0.0			747.6
Other reinsurance-related expenses		0.0			0.0		27.3		0.0			27.3
Underwriting, acquisition and insurance expenses		27.1			169.8		267.6		0.0			464.5
Interest expense		3.9			17.1		3.0		(0.3	)		23.7
Debt extinguishment costs		0.1			2.1		0.0		0.0			2.2
Foreign currency exchange loss		0.0			0.0		4.3		0.0			4.3
Total expenses		31.1			489.6		749.2		(0.3	)		1,269.6
(Loss) income before income taxes		(31.8	)		52.0		46.2		0.3			66.7
Provision for income taxes		0.0			11.1		3.3		0.0			14.4
Net (loss) income before equity in earnings of subsidiaries		(31.8	)		40.9		42.9		0.3			52.3
Equity in undistributed earnings of subsidiaries		84.1			0.0		0.0		(84.1	)		0.0
Net income	$	52.3		$	40.9	$	42.9	$	(83.8	)	$	52.3

⁽¹⁾  Includes all other subsidiaries of Argo Group International Holdings, Ltd. and all intercompany eliminations

⁽²⁾  Includes all Argo Group parent company eliminations

CONDENSED CONSOLIDATING STATEMENT OF (LOSS) INCOME

FOR THE YEAR ENDED DECEMBER 31, 2011

(in millions)

	Argo Group International Holdings, Ltd (Parent Guarantor)			Argo Group US, Inc. and Subsidiaries (Subsidiary Issuer)		Other Subsidiaries and Eliminations (1)			Consolidating Adjustments (2)			Total
Premiums and other revenue:
Earned premiums	$	0.0		$	440.7	$	641.3		$	0.0		$	1,082.0
Net investment income(3)		100.1			88.9		36.8			(100.0	)		125.8
Fee income, net		0.0			0.1		1.3			0.0			1.4
Net realized investment and other gains		0.0			36.9		12.3			0.0			49.2
Total revenue		100.1			566.6		691.7			(100.0	)		1,258.4
Expenses:
Losses and loss adjustment expenses		0.0			290.0		573.1			0.0			863.1
Other reinsurance-related expenses		0.0			0.0		5.9			0.0			5.9
Underwriting, acquisition and insurance expenses		22.6			161.5		241.6			0.0			425.7
Interest expense		5.4			15.5		1.2			0.0			22.1
Foreign currency exchange loss		0.0			0.0		3.5			0.0			3.5
Total expenses		28.0			467.0		825.3			0.0			1,320.3
Income (loss) before income taxes		72.1			99.6		(133.6	)		(100.0	)		(61.9	)
Provision (benefit) for income taxes		0.0			28.0		(8.0	)		0.0			20.0
Net income (loss) before equity in losses of subsidiaries		72.1			71.6		(125.6	)		(100.0	)		(81.9	)
Equity in undistributed losses of subsidiaries		(154.0	)		0.0		0.0			154.0			0.0
Net (loss) income	$	(81.9	)	$	71.6	$	(125.6	)	$	54.0		$	(81.9	)

⁽¹⁾  Includes all other subsidiaries of Argo Group International Holdings, Ltd. and all intercompany eliminations

⁽²⁾  Includes all Argo Group parent company eliminations

⁽³⁾  Included in net investment income for Argo Group parent is intercompany dividend activity of $100.0 million

Condensed Consolidating Statement of Cash Flows

CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS

FOR THE YEAR ENDED DECEMBER 31, 2013

(in millions)

	Argo Group International Holdings, Ltd (Parent Guarantor)			Argo Group US, Inc. and Subsidiaries (Subsidiary Issuer)			Other Subsidiaries and Eliminations (1)			Consolidating Adjustments (2)			Total
Net cash flows from operating activities	$	63.2		$	62.5		$	(125.9	)	$	0.0		$	(0.2	)
Cash flows from investing activities:
Proceeds from sales of investments		0.0			1,130.2			836.1			0.0			1,966.3
Maturities and mandatory calls of fixed maturity investments		0.0			168.9			112.9			0.0			281.8
Purchases of investments		0.0			(1,156.7	)		(819.1	)		0.0			(1,975.8	)
Change in short-term investments and foreign regulatory deposits		(1.4	)		(119.1	)		(32.5	)		0.0			(153.0	)
Settlements of foreign currency exchange forward contracts		0.7			0.0			(4.6	)		0.0			(3.9	)
Issuance of intercompany note, net		0.0			35.0			14.3			(49.3	)		0.0
Other, net		0.0			(16.3	)		21.7			0.0			5.4
Cash (used) provided by investing activities		(0.7	)		42.0			128.8			(49.3	)		120.8
Cash flows from financing activities:
Borrowings under intercompany note, net		(49.3	)		0.0			0.0			49.3			0.0
Activity under stock incentive plans		2.6			0.0			0.0			0.0			2.6
Repurchase of Company’s common shares		0.0			(46.5	)		0.0			0.0			(46.5	)
Excess tax expense from share-based payment arrangements		0.0			0.2			0.0			0.0			0.2
Payment of cash dividend to common shareholders		(15.8	)		0.0			0.0			0.0			(15.8	)
Cash (used) provided by financing activities		(62.5	)		(46.3	)		0.0			49.3			(59.5	)
Effect of exchange rate changes on cash		0.0			0.0			0.5			0.0			0.5
Change in cash		0.0			58.2			3.4			0.0			61.6
Cash, beginning of year		0.0			73.9			21.9			0.0			95.8
Cash, end of year	$	0.0		$	132.1		$	25.3		$	0.0		$	157.4

⁽¹⁾  Includes all other subsidiaries of Argo Group International Holdings, Ltd. and all intercompany eliminations

⁽²⁾  Includes all Argo Group parent company eliminations

CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS

FOR THE YEAR ENDED DECEMBER 31, 2012

(in millions)

	Argo Group International Holdings, Ltd (Parent Guarantor)			Argo Group US, Inc. and Subsidiaries (Subsidiary Issuer)			Other Subsidiaries and Eliminations (1)			Consolidating Adjustments (2)			Total
Net cash flows from operating activities	$	(30.2	)	$	5.5		$	55.2		$	0.0		$	30.5
Cash flows from investing activities:
Proceeds from sales of investments		0.0			573.8			556.9			0.0			1,130.7
Maturities and mandatory calls of fixed maturity investments		0.0			326.2			156.8			0.0			483.0
Purchases of investments		0.0			(889.1	)		(732.4	)		0.0			(1,621.5	)
Change in short-term investments and foreign regulatory deposits		(0.9	)		35.1			3.5			0.0			37.7
Settlements of foreign currency exchange forward contracts		2.3			0.0			(1.9	)		0.0			0.4
Issuance of intercompany note, net		0.0			(26.0	)		(29.0	)		55.0			0.0
Other, net		0.0			(29.1	)		(4.9	)		0.0			(34.0	)
Cash provided (used) by investing activities		1.4			(9.1	)		(51.0	)		55.0			(3.7	)
Cash flows from financing activities:
Borrowings under intercompany note, net		55.0			0.0			0.0			(55.0	)		0.0
Proceeds from issuance of senior unsecured fixed rate notes		0.0			138.7			0.0			0.0			138.7
Redemption of trust preferred securities, net		(15.1	)		(102.1	)		0.0			0.0			(117.2	)
Activity under stock incentive plans		1.2			0.0			0.0			0.0			1.2
Repurchase of Company’s common shares		0.0			(44.2	)		0.0			0.0			(44.2	)
Payment of cash dividend to common shareholders		(12.3	)		0.0			0.0			0.0			(12.3	)
Cash provided (used) by financing activities		28.8			(7.6	)		0.0			(55.0	)		(33.8	)
Effect of exchange rate changes on cash		0.0			0.0			0.1			0.0			0.1
Change in cash		0.0			(11.2	)		4.3			0.0			(6.9	)
Cash, beginning of year		0.0			85.1			17.6			0.0			102.7
Cash, end of year	$	0.0		$	73.9		$	21.9		$	0.0		$	95.8

⁽¹⁾  Includes all other subsidiaries of Argo Group International Holdings, Ltd. and all intercompany eliminations

⁽²⁾  Includes all Argo Group parent company eliminations

CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS

FOR THE YEAR ENDED DECEMBER 31, 2011

(in millions)

	Argo Group International Holdings, Ltd (Parent Guarantor)			Argo Group US, Inc. and Subsidiaries (Subsidiary Issuer)			Other Subsidiaries and Eliminations (1)			Consolidating Adjustments (2)			Total
Net cash flows from operating activities	$	71.6		$	27.6		$	(16.9	)	$	(100.0	)	$	(17.7	)
Cash flows from investing activities:
Proceeds from sales of investments		0.0			869.3			501.5			0.0			1,370.8
Maturities and mandatory calls of fixed maturity investments		0.0			275.0			175.9			0.0			450.9
Purchases of investments		0.0			(1,123.5	)		(671.4	)		0.0			(1,794.9	)
Change in short-term investments and foreign regulatory deposits		0.0			61.9			8.2			0.0			70.1
Settlements of foreign currency exchange forward contracts		1.3			0.0			6.4			0.0			7.7
Issuance of intercompany note, net		0.0			(23.5	)		84.1			(60.6	)		0.0
Other, net		(0.3	)		(13.7	)		11.5			0.0			(2.5	)
Cash provided (used) by investing activities		1.0			45.5			116.2			(60.6	)		102.1
Cash flows from financing activities:
Borrowings under intercompany note, net		(60.6	)		0.0			0.0			60.6			0.0
Activity under stock incentive plans		1.1			0.0			0.0			0.0			1.1
Repurchase of Company’s common shares		0.0			(49.5	)		0.0			0.0			(49.5	)
Excess tax benefit from share-based payment arrangements		0.0			(0.1	)		0.0			0.0			(0.1	)
Payment of cash dividend to common shareholders		(13.1	)		0.0			(100.0	)		100.0			(13.1	)
Cash (used) provided by financing activities		(72.6	)		(49.6	)		(100.0	)		160.6			(61.6	)
Effect of exchange rate changes on cash		0.0			0.0			(3.6	)		0.0			(3.6	)
Change in cash		0.0			23.5			(4.3	)		0.0			19.2
Cash, beginning of year		0.0			61.6			21.9			0.0			83.5
Cash, end of year	$	0.0		$	85.1		$	17.6		$	0.0		$	102.7

⁽¹⁾  Includes all other subsidiaries of Argo Group International Holdings, Ltd. and all intercompany eliminations

⁽²⁾  Includes all Argo Group parent company eliminations

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Share-based Compensation - Summary of Option Activity (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercised, shares	(497,652)
2007 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares, Outstanding at January 1, 2013	418,325
Granted, Shares	0
Exercised, shares	(215,182)
Expired or forfeited, Shares	(45,051)
Shares, Outstanding at December 31, 2013	158,092
Vested and exercisable at end of year, Shares	158,092
Weighted-Average Exercise Price, Outstanding at January 1, 2013	$ 33.56
Granted, Weighted-Average Exercise Price	$ 0.00
Exercised, Weighted-Average Exercise Price	$ 32.89
Expired or forfeited, Weighted-Average Exercise Price	$ 34.21
Weighted-Average Exercise Price, Outstanding at December 31, 2013	$ 34.27
Vested and exercisable at end of year, Weighted-Average Exercise Price	$ 34.27
Weighted-Average Remaining Contractual Term, Outstanding at end of the year	1 year 3 months 18 days
Vested and exercisable at end of year, Weighted-Average Remaining Contractual Term	1 year 3 months 18 days
Aggregate Intrinsic Value, Outstanding at end of the year	$ 1,931,749
Vested and exercisable at end of year, Aggregate Intrinsic Value	$ 1,931,749

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Quarterly Financial Data - Quarterly Financial Data (Detail) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Quarterly Financial Information Disclosure [Abstract]
Total revenue	$ 400.6	$ 364.0	$ 364.0	$ 341.6	$ 350.7	$ 344.5	$ 318.0	$ 323.1	$ 1,470.2	$ 1,336.3
Net income (loss) before income taxes	66.5	32.9	42.8	37.5	(4.1)	17.7	25.0	28.1	179.7	66.7	(61.9)
Net income (loss)	47.8	31.0	31.7	32.7	(4.7)	13.4	24.0	19.6	143.2	52.3	(81.9)
Net income (loss) per common share
Basic	$ 1.80	$ 1.17	$ 1.18	$ 1.20	$ (0.17)	$ 0.48	$ 0.85	$ 0.68	$ 5.33	$ 1.86	$ (2.74)
Diluted	$ 1.74	$ 1.12	$ 1.13	$ 1.16	$ (0.17)	$ 0.47	$ 0.84	$ 0.67	$ 5.14	$ 1.83	$ (2.74)
Comprehensive income (loss)	$ 43.8	$ 47.2	$ (35.2)	$ 45.7	$ (19.3)	$ 60.0	$ 6.2	$ 55.1	$ 101.5	$ 102.0	$ (89.7)

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Income Taxes - Schedule of Pre-Tax Income (Loss) and Effective Income Tax Rates (Parenthetical) (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Examination [Line Items]
Pre-tax income (loss)	$ 66.5	$ 32.9	$ 42.8	$ 37.5	$ (4.1)	$ 17.7	$ 25.0	$ 28.1	$ 179.7	$ 66.7	$ (61.9)
Dubai [Member]
Income Tax Examination [Line Items]
Pre-tax income (loss)									1.1	0	0.1
Dubai [Member] | Maximum [Member]
Income Tax Examination [Line Items]
Pre-tax income (loss)										0.1
Switzerland [Member]
Income Tax Examination [Line Items]
Pre-tax income (loss)									0	0.1	0
Switzerland [Member] | Maximum [Member]
Income Tax Examination [Line Items]
Pre-tax income (loss)											$ 0.1

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Other Indebtedness - Schedule of Floating Rate Loan Stock, Notes Outstanding (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Debt Instrument [Line Items]
Other indebtedness, Amount	$ 65.5	$ 63.0
Floating Rate Loan Stock, U.S. Dollar, Start Year 2004 [Member]
Debt Instrument [Line Items]
Other indebtedness, Issue Date	Dec. 08, 2004	Dec. 08, 2004
Other indebtedness, Maturity	2034-11-15	2034-11-15
Other indebtedness, Redeemable Date	2009-12-08	2009-12-08
Other indebtedness, Rate Structure	6 month LIBOR + 4.2%	6 month LIBOR + 4.2%
Other indebtedness, Interest Rate	4.60%	4.93%
Other indebtedness, Amount	6.5	6.5
Floating Rate Loan Stock, Euro, Start Year 2005 [Member]
Debt Instrument [Line Items]
Other indebtedness, Issue Date	Sep. 06, 2005	Sep. 06, 2005
Other indebtedness, Maturity	2035-08-22	2035-08-22
Other indebtedness, Redeemable Date	2010-09-06	2010-09-06
Other indebtedness, Rate Structure	3 month LIBOR + 4.0%	3 month LIBOR + 4.0%
Other indebtedness, Interest Rate	4.22%	4.19%
Other indebtedness, Amount	16.3	15.5
Floating Rate Loan Stock, U.S.Dollar, Start Year 2006 [Member]
Debt Instrument [Line Items]
Other indebtedness, Issue Date	Oct. 31, 2006	Oct. 31, 2006
Other indebtedness, Maturity	2036-01-15	2036-01-15
Other indebtedness, Redeemable Date	2011-01-15	2011-01-15
Other indebtedness, Rate Structure	6 month LIBOR + 4.0%	6 month LIBOR + 4.0%
Other indebtedness, Interest Rate	4.40%	4.73%
Other indebtedness, Amount	10.0	10.0
Floating Rate Loan Stock, Euro, Start Year 2006 [Member]
Debt Instrument [Line Items]
Other indebtedness, Issue Date	Oct. 31, 2006	Oct. 31, 2006
Other indebtedness, Maturity	2036-11-22	2036-11-22
Other indebtedness, Redeemable Date	2011-10-31	2011-10-31
Other indebtedness, Rate Structure	3 month LIBOR + 4.0%	3 month LIBOR + 4.0%
Other indebtedness, Interest Rate	4.22%	4.19%
Other indebtedness, Amount	14.3	13.6
Floating Rate Loan Stock, Euro, Start Year 2007 [Member]
Debt Instrument [Line Items]
Other indebtedness, Issue Date	Jun. 08, 2007	Jun. 08, 2007
Other indebtedness, Maturity	2037-09-15	2037-09-15
Other indebtedness, Redeemable Date	2012-06-08	2012-06-08
Other indebtedness, Rate Structure	3 month LIBOR + 3.9%	3 month LIBOR + 3.9%
Other indebtedness, Interest Rate	4.12%	4.08%
Other indebtedness, Amount	$ 18.4	$ 17.4

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Schedule V - Valuation and Qualifying Accounts (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Valuation And Qualifying Accounts [Abstract]
Valuation allowance for deferred tax asset, Balance at Beginning of Period	$ 52.5	$ 50.4	$ 49.6
Valuation allowance for deferred tax asset, Charged to Cost and Expense	(1.0)	(1.0)	(1.0)
Valuation allowance for deferred tax asset, Capital Loss Carryforward	0	0	0
Valuation allowance for deferred tax asset, Net Operating Loss Carryforward	0	0	0
Valuation allowance for deferred tax asset, Charged to Other Accounts	4.7	3.1	1.8
Valuation allowance for deferred tax asset, Deductions	0	0	0
Valuation allowance for deferred tax asset, Balance at End of Period	$ 56.2	$ 52.5	$ 50.4

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Reserves for Losses and Loss Adjustment Expenses - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Schedule Of Reserves For Losses And Loss Adjustment Expenses [Line Items]
Net reserves ceded - whole account quota share reinsurance transaction	$ 0	$ 192.2	$ 0
Reinsurance recoverables due		60.1
Liability for unpaid claims and claims adjustment expense, incurred claims, prior years	(33.6)	(32.9)	(3.4)
Workers compensation pension, maximum interest rate	3.50%	3.50%	3.50%
Workers compensation pension, unamortized discount	19.5	20.8	22.0
Defense And Settlement Costs [Member]
Schedule Of Reserves For Losses And Loss Adjustment Expenses [Line Items]
Liability for unpaid claims and claims adjustment expense, incurred claims, prior years	10.5	9.1
Medical Malpractice Liability [Member]
Schedule Of Reserves For Losses And Loss Adjustment Expenses [Line Items]
Liability for unpaid claims and claims adjustment expense, incurred claims, prior years	2.0
General Liability [Member]
Schedule Of Reserves For Losses And Loss Adjustment Expenses [Line Items]
Liability for unpaid claims and claims adjustment expense, incurred claims, prior years	16.2	31.5	16.3
Automobile Liability Lines of Business [Member]
Schedule Of Reserves For Losses And Loss Adjustment Expenses [Line Items]
Liability for unpaid claims and claims adjustment expense, incurred claims, prior years	2.0	5.5
Workers Compensation [Member]
Schedule Of Reserves For Losses And Loss Adjustment Expenses [Line Items]
Liability for unpaid claims and claims adjustment expense, incurred claims, prior years	9.5	10.1	5.9
Short-Tail Non-Catastrophe Losses [Member]
Schedule Of Reserves For Losses And Loss Adjustment Expenses [Line Items]
Liability for unpaid claims and claims adjustment expense, incurred claims, prior years			7.0
Deepwater Horizon Incident [Member]
Schedule Of Reserves For Losses And Loss Adjustment Expenses [Line Items]
Liability for unpaid claims and claims adjustment expense, incurred claims, prior years			2.5
Legacy Company Claims [Member]
Schedule Of Reserves For Losses And Loss Adjustment Expenses [Line Items]
Liability for unpaid claims and claims adjustment expense, incurred claims, prior years			4.6
Commercial Multi Peril, Automobile And Unallocated Loss Adjustment Expense Reserves [Member]
Schedule Of Reserves For Losses And Loss Adjustment Expenses [Line Items]
Liability for unpaid claims and claims adjustment expense, incurred claims, prior years			11.7
LAE [Member]
Schedule Of Reserves For Losses And Loss Adjustment Expenses [Line Items]
Paid loss recoverables excluded from reinsurance recoverable on unpaid losses and LAE	33.6	32.9	3.4
Excess and Surplus Lines [Member]
Schedule Of Reserves For Losses And Loss Adjustment Expenses [Line Items]
Liability for unpaid claims and claims adjustment expense, incurred claims, prior years	43.9	48.0	33.8
Excess and Surplus Lines [Member] | General and Products Liability Lines of Business [Member]
Schedule Of Reserves For Losses And Loss Adjustment Expenses [Line Items]
Liability for unpaid claims and claims adjustment expense, incurred claims, prior years	55.8	39.2	30.2
Excess and Surplus Lines [Member] | Commercial Automobile [Member]
Schedule Of Reserves For Losses And Loss Adjustment Expenses [Line Items]
Liability for unpaid claims and claims adjustment expense, incurred claims, prior years	11.9
Commercial Specialty [Member]
Schedule Of Reserves For Losses And Loss Adjustment Expenses [Line Items]
Liability for unpaid claims and claims adjustment expense, incurred claims, prior years	1.1	22.2	8.4
Short-Tail Lines [Member]
Schedule Of Reserves For Losses And Loss Adjustment Expenses [Line Items]
Liability for unpaid claims and claims adjustment expense, incurred claims, prior years	6.8
Directors and Officers Program [Member]
Schedule Of Reserves For Losses And Loss Adjustment Expenses [Line Items]
Liability for unpaid claims and claims adjustment expense, incurred claims, prior years			3.7
International Specialty [Member]
Schedule Of Reserves For Losses And Loss Adjustment Expenses [Line Items]
Liability for unpaid claims and claims adjustment expense, incurred claims, prior years		7.2
Syndicate 1200 Segment [Member]
Schedule Of Reserves For Losses And Loss Adjustment Expenses [Line Items]
Liability for unpaid claims and claims adjustment expense, incurred claims, prior years	6.2	9.7	18.7
Syndicate 1200 Segment [Member] | Property Lines [Member]
Schedule Of Reserves For Losses And Loss Adjustment Expenses [Line Items]
Liability for unpaid claims and claims adjustment expense, incurred claims, prior years	12.8		14.5
Syndicate 1200 Segment [Member] | Municipality Business [Member]
Schedule Of Reserves For Losses And Loss Adjustment Expenses [Line Items]
Liability for unpaid claims and claims adjustment expense, incurred claims, prior years	6.3
Run-Off Lines [Member]
Schedule Of Reserves For Losses And Loss Adjustment Expenses [Line Items]
Liability for unpaid claims and claims adjustment expense, incurred claims, prior years	15.5	9.8	7.9
Reinsurance [Member]
Schedule Of Reserves For Losses And Loss Adjustment Expenses [Line Items]
Liability for unpaid claims and claims adjustment expense, incurred claims, prior years			$ 4.6

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Other Indebtedness - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Jul. 22, 2011	Apr. 30, 2010
Debt Disclosure [Abstract]
Floating rate loan stock			$ 64.7
Floating rate loan stock denominated in Euros	49.0	46.5
Floating rate loan stock, principal payments			0
Credit agreement with major money center banks, amount					150.0
Maximum borrowing capacity under revolving credit facility before amendment				150.0
Maximum borrowing capacity under revolving credit facility				170.0
Revolving credit facility, expiration date before amendment	April 30, 2013
Revolving credit facility, expiration date	Apr. 30, 2014
Line of credit facility remaining borrowing capacity held with lender	51.00%
Borrowings outstanding under revolving credit facility	0
Revolving letter of credit amount outstanding	15.0
Amount drawn under revolving letter of credit	0.2	0.8
Note payable as part of ARIS acquisition	0.8	0.8
Note payable on recourse basis	$ 0.2	$ 0.2
Variable interest rate of note payable, above 30-day LIBOR	2.00%	2.00%
Interest rate at the end of the year		2.21%
Debt Instrument, expiry date	Dec. 16, 2013

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Income Taxes - Reconciliation of Difference Between Provision for Income Taxes and Expected Tax Provision at Weighted Average Tax Rate (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]
Income tax provision at expected rate	$ 43.1	$ 18.5	$ 26.0
Tax-exempt interest	(5.6)	(5.6)	(5.8)
Dividends received deduction	(2.3)	(2.2)	(1.6)
Valuation allowance change	3.7	2.1	0.8
Other permanent adjustments, net	0.3	1.8	0.3
Adjustment for prior year tax return	(1.6)	0.2	1.6
United States state tax benefit	0.3	(0.3)	(0.3)
Other foreign adjustments	(0.1)	0	0.1
Prior year foreign taxes	1.1	0	(0.6)
Rate adjustment on loss carrybacks	0	0	(0.4)
Deferred tax rate reduction	(1.2)	(0.6)	(0.4)
Foreign exchange adjustments	(1.7)	0.5	0.3
Foreign withholding taxes	0.5	0	0
Income tax provision	36.5	14.4	20.0
Income tax provision (benefit)-Foreign	2.4	3.3	(8.0)
Income tax provision-United States Federal	33.2	11.5	28.5
Income tax (benefit) provision-United States State	0.4	(0.4)	(0.5)
Foreign withholding tax-United States	$ 0.5	$ 0	$ 0

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Investments - Schedule of Reconciliation of Beginning and Ending Balances for Investments Categorized as Level 3 (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning balance	$ 8.7	$ 12.1
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Included in net income (loss)	0.1	0.1
Included in other comprehensive income (loss)	0	0
Purchases	0	0
Issuances	0	0
Sales	(0.6)	(1.4)
Settlements	(4.3)	(2.1)
Ending balance, December 31, 2012	3.9	8.7
Amount of total gains or losses for the year included in net income (loss) attributable to the change in unrealized gains or losses relating to assets still held at December 31, 2012	0	0
Other Assets [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning balance	6.9	9.0
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Included in net income (loss)	0	0
Included in other comprehensive income (loss)	0	0
Purchases	0	0
Issuances	0	0
Sales	0	0
Settlements	(4.3)	(2.1)
Ending balance, December 31, 2012	2.6	6.9
Amount of total gains or losses for the year included in net income (loss) attributable to the change in unrealized gains or losses relating to assets still held at December 31, 2012	0	0
Credit Financial [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning balance		0.7
Transfers into Level 3		0
Transfers out of Level 3		0
Included in net income (loss)		0.1
Included in other comprehensive income (loss)		0
Purchases		0
Issuances		0
Sales		(0.8)
Settlements		0
Ending balance, December 31, 2012		0
Amount of total gains or losses for the year included in net income (loss) attributable to the change in unrealized gains or losses relating to assets still held at December 31, 2012		0
Equity securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning balance	1.8	2.4
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Included in net income (loss)	0.1	0
Included in other comprehensive income (loss)	0	0
Purchases	0	0
Issuances	0	0
Sales	(0.6)	(0.6)
Settlements	0	0
Ending balance, December 31, 2012	1.3	1.8
Amount of total gains or losses for the year included in net income (loss) attributable to the change in unrealized gains or losses relating to assets still held at December 31, 2012	$ 0	$ 0

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Commitments and Contingencies

12 Months Ended

Dec. 31, 2013

Commitments And Contingencies Disclosure [Abstract]

Commitments and Contingencies

18. Commitments and Contingencies

Argo Group’s subsidiaries are parties to legal actions incidental to their business. Based on the opinion of counsel, management believes that the resolution of these matters will not materially affect our financial condition or results of operations.

Argo Group has contractual commitments to invest up to $35.7 million related to its limited partnership investments at December 31, 2013. These commitments will be funded as required by the partnership agreements.

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Schedule II - Schedule of Statements of Income (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Condensed Financial Statements, Captions [Line Items]
Net investment income									$ 100.0	$ 118.8	$ 125.8
Net realized investment losses									71.3	25.7	49.2
Total revenue	400.6	364.0	364.0	341.6	350.7	344.5	318.0	323.1	1,470.2	1,336.3
Interest expense									20.2	23.7	22.1
Debt extinguishment costs									0	(2.2)	0
Net (loss) income before equity in earnings of subsidiaries									143.2	52.3	(81.9)
Equity in undistributed earnings (losses) of subsidiaries									0	0	0
Net income (loss)	47.8	31.0	31.7	32.7	(4.7)	13.4	24.0	19.6	143.2	52.3	(81.9)
Registrant [Member]
Condensed Financial Statements, Captions [Line Items]
Net investment income									84.5	0.1	100.1
Net realized investment losses									0	(0.8)	0
Total revenue									84.5	(0.7)	100.1
Interest expense									3.3	3.9	5.4
Debt extinguishment costs									0	0.1	0
Other expenses									27.4	27.1	22.6
Total expenses									30.7	31.1	28.0
Net (loss) income before equity in earnings of subsidiaries									53.8	(31.8)	72.1
Equity in undistributed earnings (losses) of subsidiaries									89.4	84.1	(154.0)
Net income (loss)									$ 143.2	$ 52.3	$ (81.9)

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Share-based Compensation (Tables)

12 Months Ended

Dec. 31, 2013

Fair Value Assumptions

The expected dividend yield is based on our history and expected dividend payouts. The following table summarizes the assumptions we used for the years ended December 31, 2013, 2012 and 2011:

	2013	2012	2011
Risk-free rate of return	0.80% to 1.71%	0.68% to 1.11%	0.81% to 2.07%
Expected dividend yields	1.49% to 1.67%	1.58% to 1.67%	1.37% to 1.56%
Expected award life (years)	4.91 to 5.07	5.03 to 5.06	5.04 to 5.07
Expected volatility	26.3% to 32.1%	32.1% to 32.8%	32.2% to 32.8%

2007 Plan [Member]

Summary of Option Activity Under Amended Plan

A summary of option activity under the 2007 Plan as of December 31, 2013 and changes during the year is as follows:

						Weighted-Average		Aggregate
				Weighted-Average		Remaining		Intrinsic
	Shares			Exercise Price		Contractual Term		Value
Outstanding at January 1, 2013		418,325		$	33.56
Granted		0		$	0.00
Exercised		(215,182	)	$	32.89
Expired or forfeited		(45,051	)	$	34.21
Outstanding at December 31, 2013		158,092		$	34.27		1.3	$	1,931,749
Vested and exercisable at end of year		158,092		$	34.27		1.3	$	1,931,749

Summary of Restricted Share Units Activity Under 2007 Plan

A summary of restricted share activity under the 2007 Plan as of December 31, 2013 and changes during the year is as follows:

				Weighted-Average
				Grant Date
	Shares			Fair Value
Outstanding at January 1, 2013		236,139		$	30.09
Granted		127,288		$	38.18
Vested and issued		(55,551	)	$	30.55
Expired or forfeited		(49,901	)	$	35.34
Outstanding at December 31, 2013		257,975		$	32.97

Summary of Stock-Settled SARs Activity Under 2007 Plan

A summary of stock-settled SARs activity under the 2007 Plan as of December 31, 2013 and changes during the year is as follows:

				Weighted-Average
	Shares			Exercise Price
Outstanding at January 1, 2013		1,261,448		$	27.04
Granted		333,004		$	37.19
Exercised		(181,043	)	$	26.88
Expired or forfeited		(124,711	)	$	29.27
Outstanding at December 31, 2013		1,288,698		$	29.47
Vested or expected to vest as of end of year		1,164,170		$	29.30
Exercisable at end of year		595,312		$	26.86

Summary of Cash-Settled SARs Activity Under 2007 Plan

A summary of cash-settled SARs activity under the 2007 Plan as of December 31, 2013 and changes during the year is as follows:

				Weighted-Average
	Shares			Exercise Price
Outstanding at January 1, 2013		1,886,615		$	29.76
Granted		556,107		$	39.73
Exercised		(497,652	)	$	29.49
Expired or forfeited		(201,312	)	$	29.91
Outstanding at December 31, 2013		1,743,758		$	33.00
Vested or expected to vest as of end of year		1,480,261		$	32.83
Exercisable at end of year		381,310		$	29.57

Amended Plan [Member]

Summary of Option Activity Under Amended Plan

A summary of option activity under the Amended Plan as of December 31, 2013 and changes during the year is as follows:

						Weighted-Average		Aggregate
				Weighted-Average		Remaining		Intrinsic
	Shares			Exercise Price		Contractual Term		Value
Outstanding at January 1, 2013		210,097		$	34.42
Granted		0		$	0.00
Exercised		(127,974	)	$	29.32
Expired or forfeited		(41,814	)	$	48.01
Outstanding at December 31, 2013		40,309		$	36.49		0.6	$	403,237
Vested and exercisable at end of year		40,309		$	36.49		0.6	$	403,237

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Reserves for Losses and Loss Adjustment Expenses (Tables)

12 Months Ended

Dec. 31, 2013

Insurance [Abstract]

Reinsurance Recoverables

The following table provides a reconciliation of reserves for losses and loss adjustment expenses (“LAE”) for the years ended December 31, 2013, 2012 and 2011, respectively.

(in millions)	2013			2012			2011
Net reserves beginning of the year	$	2,110.9		$	2,336.7		$	2,253.0
Add:
Net reserves from assumed retroactive insurance contract (1)		0.0			13.0			0.0
Losses and LAE incurred during current calendar year, net of reinsurance:
Current accident year		775.6			780.5			866.5
Prior accident years		(33.6	)		(32.9	)		(3.4	)
Losses and LAE incurred during calendar year, net of reinsurance		742.0			747.6			863.1
Deduct:
Net reserves ceded—whole account quota share reinsurance transaction (2)		0.0			192.2			0.0
Losses and LAE payments made during current calendar year, net of reinsurance:
Current accident year		199.3			217.7			234.7
Prior accident years		554.2			578.8			577.9
Losses and LAE payments made during current calendar year, net of reinsurance:		753.5			796.5			812.6
Change in participation interest (3)		10.4			(3.1	)		31.2
Foreign exchange adjustments		(2.2	)		5.4			2.0
Net reserves—end of year		2,107.6			2,110.9			2,336.7
Add:
Reinsurance recoverables on unpaid losses and LAE, end of year		1,122.7			1,112.6			954.4
Gross reserves—end of year	$	3,230.3		$	3,223.5		$	3,291.1

⁽¹⁾  Amount represents reserves assumed resulting from participation in Brazilian Motor Third-Party Liability Insurance Pool effective January 1, 2012.

⁽²⁾  Amount represents reserves ceded resulting from a whole account quota share reinsurance transaction of 2009 and prior year of account reserves of the syndicate effective December 2012.

⁽³⁾  Amount represents (decrease) increase in reserves due to change in syndicate participation.

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Income Taxes - Schedule of Pre-Tax Income (Loss) and Effective Income Tax Rates (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Examination [Line Items]
Pre-tax income (loss)	$ 66.5	$ 32.9	$ 42.8	$ 37.5	$ (4.1)	$ 17.7	$ 25.0	$ 28.1	$ 179.7	$ 66.7	$ (61.9)
Bermuda [Member]
Income Tax Examination [Line Items]
Pre-tax income (loss)									50.5	10.0	(129.8)
Effective Tax Rate									0.00%	0.00%	0.00%
United States [Member]
Income Tax Examination [Line Items]
Pre-tax income (loss)									120.9	52.0	99.6
Effective Tax Rate									28.20%	21.30%	28.40%
United Kingdom [Member]
Income Tax Examination [Line Items]
Pre-tax income (loss)									18.5	14.0	(27.3)
Effective Tax Rate									12.00%	24.40%	29.50%
Belgium [Member]
Income Tax Examination [Line Items]
Pre-tax income (loss)									0.2	(0.1)	0.3
Effective Tax Rate									103.00%	98.40%	20.70%
Brazil [Member]
Income Tax Examination [Line Items]
Pre-tax income (loss)									(9.7)	(6.5)	(4.1)
Effective Tax Rate									0.00%	0.00%	0.00%
Dubai [Member]
Income Tax Examination [Line Items]
Pre-tax income (loss)									1.1	0	0.1
Effective Tax Rate									0.00%	0.00%	0.00%
Ireland [Member]
Income Tax Examination [Line Items]
Pre-tax income (loss)									(0.1)	(0.2)	(0.3)
Effective Tax Rate									0.00%	0.00%	0.00%
Malta [Member]
Income Tax Examination [Line Items]
Pre-tax income (loss)									(1.7)	(2.6)	(0.4)
Effective Tax Rate									0.00%	0.00%	0.00%
Switzerland [Member]
Income Tax Examination [Line Items]
Pre-tax income (loss)									$ 0	$ 0.1	$ 0
Effective Tax Rate									5.60%	22.80%	37.30%

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Underwriting, Acquisition and Insurance Expenses - Additional Information (Detail) (Cash-Settled SARs Activity [Member], USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Cash-Settled SARs Activity [Member]
Underwriting Acquisition and Insurance Expense [Line Items]
Expense associated with cash settled stock appreciation rights	$ 23.0	$ 10.3	$ 4.4

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Business and Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2013

Accounting Policies [Abstract]

Business

Business

Argo Group International Holdings, Ltd. (“Argo Group,” “we” or the “Company”) is an international underwriter of specialty insurance and reinsurance products in the property and casualty market. Argo Group US, Inc. (“Argo Group US”) is a subsidiary of Argo Financial Holding (Ireland), Ltd. (“Argo Ireland”). Argo Underwriting Agency Limited (“Argo International”) is a subsidiary of Argo International Holdings, Ltd. Argo Re, Ltd. (“Argo Re”), a Bermuda based company, is the parent of both Argo Ireland and Argo International Holdings, Ltd. Argo Re is directly owned by Argo Group.

We conduct our ongoing business through four segments.

Excess and Surplus Lines products are written under two operating platforms: Colony Specialty and Argo Pro.

Commercial Specialty consists of the following operations: Argo Insurance, Rockwood Casualty Insurance Company (“Rockwood”), Argo Surety, Alteris and ARIS Title Insurance Corporation (“ARIS”).

International Specialty products are provided by our Bermuda operations, which include Argo Re and Argo Insurance – Casualty and Professional Lines and Argo Seguros Brasil S.A. based in Brazil.

Syndicate 1200 products are written by Argo International based in London, and are focused on underwriting on behalf of one underwriting syndicate under the Lloyd’s of London (“Lloyd’s”) global franchise.

Our Run-off Lines segment includes liabilities associated with other liability policies that were issued in the 1960s, 1970s and into the 1980s, as well as risk management policies written prior to the sale of renewal rights and other business previously written and classified as property catastrophe and Lloyd’s.

Basis of Presentation and Use of Estimates

Basis of Presentation and Use of Estimates

The consolidated financial statements of Argo Group and its subsidiaries have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”). The preparation of consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and reported amounts of revenues and expenses during the reporting period. The major estimates reflected in our consolidated financial statements include, but are not limited to, reserves for losses and loss adjustment expenses; reinsurance recoverables, including the reinsurance recoverables allowance for doubtful accounts; estimates of written and earned premiums; reinsurance premium receivable; fair value of investments and assessment of potential impairment; valuation of goodwill and intangibles and our deferred tax asset valuation allowance. Actual results could differ from those estimates.

Specifically, estimates for reserves for losses and loss adjustment expenses are based upon past claim experience modified for current trends as well as prevailing economic, legal and social conditions. Although management believes that amounts included in the accompanying consolidated financial statements are reasonable, such estimates may be more or less than the amounts ultimately paid when the claims are settled. The estimates are continually reviewed and any changes are reflected in current operating results. Further, the nature of loss exposures involves significant variability due to the long-tailed payments on claims related to asbestos and environmental coverage and workers compensation coverage. As such, losses and loss adjustment expenses could vary significantly from the recorded amounts.

The consolidated financial statements include the accounts and operations of Argo Group and its subsidiaries. All material intercompany accounts and transactions have been eliminated. Certain amounts in prior years’ financial statements have been reclassified to conform to the current presentation. Amounts related to trade capital providers, who are third party capital participants that provide underwriting capital to the Syndicate 1200 segment, are included in the balance sheet. Trade capital providers participate on a quota share basis, assuming 100% of their contractual participation in the underwriting syndicate results and with such results settled on a year of account basis. The underwriting syndicate underwrites under the Lloyd’s global franchise.

In 2009, the Financial Accounting Standards Board (“FASB”) issued revised accounting standards regarding consolidation of variable interest entities. We reevaluated our investment in our twelve statutory trusts (collectively, the “Trusts”) and two charitable foundations (collectively, the “Foundations”). We determined that the Trusts and Foundations continue to be variable interest entities due to the fact that the Trusts and Foundations do not have sufficient equity to finance their activities without additional subordinate financial support from other parties. We do not have any power to direct the activities that impact the Trusts or Foundations’ economic performance. We are not entitled to receive a majority of the residual returns of the Trusts and U.S. charitable foundation. Additionally, we are not responsible for absorbing the majority of the expected losses of the Trusts or U.S. charitable foundation; therefore, we are not the primary beneficiary and, accordingly, the Trusts and U.S. charitable foundation are not included in our consolidated financial statements. The expenses and donations of the charitable foundation in Bermuda are paid by Argo Group and have been included in the consolidated results.

The special purpose reinsurance company established in 2011 to provide reinsurance to Argo Group through two catastrophe bond transactions is a variable interest entity under the provisions of Accounting Standards Codification (“ASC”) Topic 810-10, “Consolidation”. Argo Group does not have a variable interest in this entity and is therefore not required to consolidate it in its consolidated financial statements.

10% Stock Dividend

10% Stock Dividend

On May 7, 2013, our Board of Directors declared a 10% stock dividend, payable on June 17, 2013, to shareholders of record at the close of business on June 3, 2013. As a result of the stock dividend, 2,447,839 additional shares were issued. Cash was paid in lieu of fractional shares of our common shares. All references to share and per share amounts in this document and related disclosures have been adjusted to reflect the stock dividend for all periods presented.

Cash

Cash

Cash consists of cash deposited in banks, generally in concentration and operating accounts. Interest-bearing cash accounts are classified as short-term investments.

Investments

Investments

Investments in fixed maturities at December 31, 2013 and 2012 include bonds and structured securities. Equity securities include common and preferred stocks. Other investments consist of foreign regulatory deposits, limited partnerships, private equity funds, voluntary pools and foreign exchange currency forward contracts. Short-term investments consist of money market funds, funds on deposit with Lloyd’s as security to support the corporate member’s capital, U.S. Treasury bills, sovereign debt and interest-bearing cash accounts. Investments maturing in less than one year are classified as short-term investments in our consolidated financial statements.

The amortized cost of fixed maturity securities is adjusted for amortization of premiums and accretion of discounts. This amortization or accretion is included in “Net investment income” in our Consolidated Statements of Income (Loss).

For the structured securities portion of the fixed maturity securities portfolio, we recognize income using a constant effective yield based on anticipated prepayments and the estimated economic life of the securities. Premium or discount on high investment grade securities (rated AA or higher) is amortized into income using the retrospective method. Premium or discount on lower grade securities (rated less than AA) is amortized into income using the prospective method.

Our investments in fixed maturities and equity securities with readily determinable fair value are considered available-for-sale and are carried at fair value. Changes in the fair value of investments classified as available-for-sale are not recognized to income during the period, but rather are recognized as a separate component of shareholders’ equity until realized. Fair value of these investments is estimated using prices obtained from third party pricing services, where available. For securities where we were unable to obtain fair values from a pricing service or broker, fair values were estimated using information obtained from investment advisors. We performed several processes to ascertain the reasonableness of these investment values by i) obtaining and reviewing internal control reports for our service providers that obtain fair values from third party pricing services, ii) discussing with our investment managers their process for reviewing and validating pricing obtained from outside services and obtaining values for all securities from our investment managers and iii) comparing the security pricing received from the investment managers with the prices used in the consolidated financial statements and obtaining additional information for variances that exceeded a certain threshold. As of December 31, 2013, investments we hold for which we did not receive a fair value from a pricing service or broker accounted for less than 1% of our investment portfolio. The actual value at which these securities could actually be sold or settled with a willing buyer or seller may differ from our estimated fair values depending on a number of factors including, but not limited to, the current and future economic conditions, quantity sold or settled, presence of an active market and availability of a willing buyer or seller. The cost of securities sold is based on the specific identification method.

Changes in the value of other investments consisting of limited partnerships, private equity funds and voluntary pools are principally recognized to income during the period utilizing the equity method of accounting. Our foreign regulatory deposits are assets held in trust in jurisdictions where there is a legal and regulatory requirement to maintain funds locally in order to protect policyholders. Lloyd’s is the appointed investment manager for the funds. The underlying assets are invested in government securities, agency securities and corporate bonds whose values are obtained from Lloyd’s. Foreign currency future contracts held by us are valued by our counterparty using market driven foreign currency exchange rates.

We evaluate our investments for other-than-temporary impairment. For fixed maturity securities, the evaluation for a credit loss is generally based on the present value of expected cash flows of the security as compared to the amortized book value. For mortgage-backed securities, frequency and severity of loss inputs are used in projecting future cash flows of the securities. Loss frequency is measured as the credit default rate, which includes such factors as loan-to-value ratios and credit scores of borrowers. Loss severity includes such factors as trends in overall housing prices and house prices that are obtained at foreclosure. For equity securities, the length of time and the amount of decline in fair value are the principal factors in determining other-than-temporary impairment.

All investment balances include amounts relating to trade capital providers. The results of operations and other comprehensive income exclude amounts relating to trade capital providers. Trade capital providers’ participation in the syndicate results are included in reinsurance recoverable for ceded losses and reinsurance payable for ceded premiums.

Receivables

Receivables

Premiums receivable, representing amounts due from insureds, are presented net of an allowance for doubtful accounts. The allowances for doubtful accounts were $4.5 million and $2.5 million at December 31, 2013 and 2012, respectively. Premiums receivable include amounts relating to the trade capital providers’ quota share.

Reinsurance recoverables represent amounts of paid losses and loss adjustment expenses, case reserves and incurred but not reported amounts ceded to reinsurers under reinsurance treaties. Reinsurance recoverables also reflect amounts that are due from trade capital providers. Reinsurance recoverables are presented in our Consolidated Balance Sheets net of an allowance for doubtful accounts of $3.7 million and $4.4 million at December 31, 2013 and 2012, respectively (see Note 3, “Reinsurance” for related disclosures).

An estimate of amounts that are likely to be charged off is established as an allowance for doubtful accounts as of the balance sheet date. Our estimate includes specific insured and reinsurance balances that are considered probable to be charged off after all collection efforts have ceased and in accordance with historical write-off trends based on aging categories. For the years ended December 31, 2013, 2012 and 2011, premiums receivable and reinsurance recoverables on paid losses written off, net of recoveries against the allowance for doubtful accounts or directly to the income statement are as follows:

(in millions)	2013			2012			2011
Premiums receivable	$	0.2		$	0.3		$	0.9
Reinsurance recoverables		(0.0	)		(0.4	)		11.4
Net written off (recovered)	$	0.2		$	(0.1	)	$	12.3

Recoveries occur when subsequent collection or litigation results in the receipt of amounts previously written off. Amounts recovered are applied against the bad debt expense account.

Earned Premiums

Earned Premiums

Premium revenue is recognized ratably over the policy period, with an adjustment, where appropriate, to reflect the risk profile of certain classes of business, particularly those exposed to seasonal weather related events. Premiums that have yet to be earned are reported as “Unearned premiums” in our Consolidated Balance Sheets.

Unearned premium balances include cessions to reinsurers including trade capital providers, while the earned premium recognized in our Consolidated Statements of Income (Loss) excludes amounts relating to trade capital providers. The trade capital providers’ quota share amount is included in “Ceded reinsurance payable, net”.

Assumed reinstatement premiums that reinstate coverage are written and earned at the time the associated loss event occurs. The original premium is earned over the remaining exposure period of the contract. Reinstatement premiums are estimated based upon contract terms for reported losses and estimated for incurred but not reported losses.

Goodwill and Intangible Assets

Goodwill and Intangible Assets

Goodwill and intangible assets are allocated to the segment in which the results of operations for the acquired company are reported (see Note 16, “Segment Information” for further discussion). Intangible assets with a finite life are amortized over the estimated useful life of the asset. Goodwill and intangible assets with an indefinite useful life are not amortized. Goodwill and intangible assets are tested for impairment on an annual basis or more frequently if events or changes in circumstances indicate that the carrying amount may not be recoverable. For goodwill, we may perform a qualitative test to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount as a basis for determining whether it is necessary to perform the quantitative two-step goodwill impairment test. Based on prior goodwill impairment testing, we determined the performance of the quantitative two-step impairment test was required for 2013. The first step is to identify if a potential impairment exists by comparing the fair value of a reporting unit with its carrying amount, including goodwill (“Step 1”). If the fair value of a reporting unit exceeds its carrying value amount, goodwill of the reporting unit is not considered to have a potential impairment and the second step is not necessary. However, if the carrying amount of the reporting unit exceeds its fair value, the second step (“Step 2”) is performed to determine if goodwill is impaired and to measure the amount of impairment loss to recognize, if any. Step 2 compares the implied fair value of goodwill with the carrying amount of goodwill. If the implied value of goodwill is less than the carrying amount of goodwill, it is written down to its fair value with a corresponding expense reflected in the Consolidated Statements of Income (Loss). The implied goodwill is calculated based on a hypothetical purchase price allocation, similar to the requirements in the accounting guidance for business combinations, whereby the implied fair value of the reporting unit is allocated to the fair value of the assets and liabilities of the reporting unit.

We perform our goodwill impairment test on the first day of the fourth quarter of each year, or October 1 of each year. In performing Step 1 of the impairment test, we estimated the fair value of reporting units using an average of three valuation methods: a comparable company analysis, a precedent transaction analysis and a discounted cash flow analysis. All three methods require management to make various judgments and assumptions. The discounted cash flow analysis included projections of earned premiums, loss ratios, expense growth and discount rates for each reporting unit. Assumptions about such future cash flows are based on our budgets, business plans, economic projections, anticipated future cash flows and market data. Finally, the comparable company analysis and precedent transaction analysis required judgment in selecting comparable companies and comparable transactions for use in the calculations. In all instances, future changes in these judgments and assumptions could cause impairment of goodwill.

For the years ended December 31, 2013, 2012 and 2011, all of our reporting units passed Step 1 of the goodwill impairment analysis. However, based on carrying values of the reporting units as of December 31, 2013, a 38% decline in the fair value of the Excess and Surplus Lines reporting unit, 21% decline in the fair value of the Commercial Specialty reporting unit or 16% decline in the fair value of the Syndicate 1200 reporting unit would have resulted in the carrying values of these reporting units being in excess of their respective fair values, resulting in the need to perform Step 2, which could have resulted in a material impairment to our goodwill. Any decline in the fair value of these reporting units could result in the carrying value of the reporting unit being in excess of fair value, triggering Step 2 of the impairment testing model, which could result in an impairment of goodwill.

As noted above, we have elected to make the first day of the fourth quarter the annual impairment assessment date for goodwill and indefinite-lived intangible assets. An impairment analysis subsequent to this date has not been performed as management believes that no additional indicators of impairment have arisen, such as significant additional pricing competition, unexpected significant declines in operating results, divestiture of a significant component of the business or a significant decline in our market capitalization.

The following table presents our intangible assets and accumulated amortization at December 31:

	December 31, 2013				December 31, 2012
(in millions)	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
Lloyd’s capacity	$	60.5		n/a	$	60.5		n/a
Title plant		1.8		n/a		1.8		n/a
Distribution network		44.8		23.1		44.2		18.0
Additional Lloyd’s capacity		4.8		3.2		4.8		2.3
Other		1.5		1.1		1.5		1.0
	$	113.4	$	27.4	$	112.8	$	21.3

The weighted average useful life by category at December 31, 2013 was 9.8 years for the distribution network, 5.0 years for the additional Lloyd’s capacity and 9.0 years for other. The weighted average useful life for all categories was 9.3 years at December 31, 2013.

During the twelve months ended December 31, 2013, 2012 and 2011, amortization expense was $6.1 million, $5.2 million and $4.6 million, respectively, and is included in “Underwriting, acquisition and insurance expenses” in our Consolidated Statements of Income (Loss).

The estimated amortization expense for the years ended December 31, 2014, 2015, 2016, 2017 and 2018 is $5.4 million, $5.4 million, $5.1 million, $4.4 million and $2.4 million, respectively.

Retrospectively Rated Policies

Retrospectively Rated Policies

We have written a number of workers compensation, property and other liability policies that are retrospectively rated. Under this type of policy, the policyholder or coverholder may be entitled, subsequent to coverage expiration, to a refund or may owe additional premiums based on the amount of losses incurred under the policy. The retrospective premium adjustments on certain policies are limited to a minimum or maximum premium adjustment, which is calculated as a percentage of the standard amount of premium charged during the life of the policy. Accrued retrospectively rated premiums have been determined based on estimated ultimate loss experience of the individual policyholder accounts. The estimated liability for return of premiums under retrospectively rated policies is included in unearned premiums and was $6.8 million and $7.0 million at December 31, 2013 and 2012, respectively.

Deferred Acquisition Costs

Deferred Acquisition Costs

Policy acquisition costs, which include commissions, premium taxes, fees and certain other costs of underwriting policies, are deferred, when such policies are profitable, and amortized over the same period in which the related premiums are earned. To qualify for capitalization, the policy acquisition cost must be directly related to the successful acquisition of an insurance contract. Anticipated investment income is considered in determining whether the deferred acquisition costs are recoverable and whether a premium deficiency exists. We continually review the methods of making such estimates and establishing the deferred costs with any adjustments made in the accounting period in which the adjustment arose.

The 2013 and 2012 net amortization of policy acquisition costs will not equal the change in our Consolidated Balance Sheets as the trade capital providers’ share is not reflected in our Consolidated Statements of Income (Loss) and differences arise from foreign currency exchange rates applied to deferred acquisition costs which are treated as a nonmonetary asset.

Reserves for Losses and Loss Adjustment Expenses

Reserves for Losses and Loss Adjustment Expenses

Liabilities for unpaid losses and loss adjustment expenses include the accumulation of individual case estimates for claims reported as well as estimates of incurred but not reported claims and estimates of claim settlement expenses. Reinsurance recoverables on unpaid claims and claim expenses represent estimates of the portion of such liabilities that will be recoverable from reinsurers. Amounts recoverable from reinsurers are recognized as assets at the same time and in a manner consistent with the unpaid claims liabilities associated with the reinsurance policy (for additional information, see heading “Reinsurance” below).

Property and Equipment

Property and Equipment

Property and equipment used in operations, including certain costs incurred to develop or obtain computer software for internal use, are capitalized and carried at cost less accumulated depreciation and are reported in “Other assets” in our Consolidated Balance Sheets. Depreciation is calculated using a straight-line method over the estimated useful lives of the assets, generally three to forty years. The accumulated depreciation for property and equipment was $65.5 million and $53.1 million at December 31, 2013 and 2012, respectively. The net book value of our property and equipment at December 31, 2013 and 2012 was $79.0 million and $68.7 million, respectively. The depreciation expense at December 31, 2013, 2012 and 2011 was $15.5 million, $12.6 million and $10.1 million, respectively.

Foreign Currency Exchange Gain (Loss)

Foreign Currency Exchange Gain (Loss)

The U.S. Dollar is the functional currency of all but two of our foreign operations. Monetary assets and liabilities in foreign operations that are denominated in foreign currencies are revalued at the exchange rates in effect at the balance sheet date. The resulting gains and losses from changes in the foreign exchange rates are reflected in net income. Revenues and expenses denominated in foreign currencies are translated at the prevailing exchange rate during the period with the resulting foreign exchange gains and losses included in net income for the period. In the case of our foreign currency denominated available-for-sale investments, the change in exchange rates between the local currency and our functional currency at each balance sheet date represents an unrealized appreciation or depreciation in value of these securities and is included as a component of accumulated other comprehensive gain.

Translation gains and losses related to our operations in Brazil and Malta are recorded as a component of shareholders’ equity in our Consolidated Balance Sheets. At December 31, 2013 and 2012, the foreign currency translation adjustments were a loss of $11.5 million and $8.7 million, respectively.

Share-Based Payments

Share-Based Payments

Compensation expense for share-based payments is recognized based on the measurement-date fair value for awards that will settle in shares. Awards that are expected to be settled in cash are accounted for as liability awards, resulting in the fair value of the award being measured at each reporting date until the award is exercised, forfeited or expires unexercised. Compensation expense for awards that are settled in equity are recognized on a straight line pro rata basis over the vesting period. Compensation expense for awards that are settled in cash are recognized on the accelerated recognition method over the award’s vesting period. See Note 15, “Share-based Compensation” for related disclosures.

Income Taxes

Income Taxes

Deferred tax assets and liabilities are recognized for the estimated future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Deferred tax assets and liabilities are measured using enacted tax rates in effect for the year in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in net income in the period in which the change is enacted.

For any uncertain tax positions not meeting the “more-likely-than-not” recognition threshold, accounting standards require recognition, measurement and disclosure in a company’s financial statements. We had no material unrecognized tax benefits as of December 31, 2013, 2012 and 2011. Our United States subsidiaries are no longer subject to U.S. federal and state income tax examinations by tax authorities for years before 2010. Our United Kingdom subsidiaries are no longer subject to United Kingdom income tax examinations by Her Majesty’s Revenue and Customs for years before 2011.

Reinsurance

Reinsurance

In the normal course of business, our insurance and reinsurance subsidiaries reinsure various risks above certain retention levels with other insurance enterprises. Reinsurance recoverables include claims we paid and estimates of unpaid losses and loss adjustment expenses that are subject to reimbursement under reinsurance and retrocessional contracts. The method for determining reinsurance recoverables for unpaid losses and loss adjustment expenses involves reviewing actuarial estimates of gross unpaid losses and loss adjustment expenses to determine our ability to cede unpaid losses and loss adjustment expenses under our existing reinsurance contracts. This method is continually reviewed and updated and any resulting adjustments are reflected in earnings in the period identified. Reinsurance premiums, commissions and expense reimbursements are accounted for on a basis consistent with those used in accounting for the original policies issued and the term of the reinsurance contracts. Amounts recoverable from reinsurers for losses and loss adjustment expenses for which our insurance and reinsurance subsidiaries have not been relieved of their legal obligations to the policyholder are reported as assets.

Derivative Instruments

Derivative Instruments

We enter into short-term, currency spot and forward contracts to mitigate foreign exchange rate exposure in our non-U.S. Dollar denominated fixed maturity investments. The forward contracts used are typically less than sixty days and are renewed as long as the non-U.S. Dollar denominated fixed maturity investments are held in our portfolio. Forward contracts are designated as hedges for accounting purposes. We also enter into foreign currency exchange forward contracts to manage currency exposure on losses related to global catastrophe events. These foreign currency forward contacts are carried at fair value in our Consolidated Balance Sheets in “Other investments.” The realized and unrealized gains and losses are included in “Net realized investment and other gains” in our Consolidated Statements of Income (Loss).

Through our subsidiary Argo Re, in 2011 we entered into two reinsurance contracts with a special purpose reinsurance company that provided us with protection against certain severe catastrophe events and the occurrence of multiple significant catastrophe events during the same year. The special purpose reinsurance company provided the reinsurance through two catastrophe bond transactions that were supported by two collateralized facilities. The reinsurance contracts were deemed to be derivatives. We recorded these contracts at fair value, and such fair value is included in “Other assets” in our Consolidated Balance Sheets with any changes in the value reflected in “Other reinsurance-related expenses” in our Consolidated Statements of Income (Loss). See Note 6, “Derivative Instruments” for related disclosures.

Supplemental Cash Flow Information

Supplemental Cash Flow Information

Income taxes paid. We paid income taxes of $14.2 million in 2013, $21.0 million in 2012 and $16.7 million in 2011.

Income taxes recovered. We recovered income taxes of $0.0 million in 2013, $10.0 million in 2012 and $0.2 million in 2011.

Interest paid. Interest paid for the years ended December 31, was as follows:

(in millions)	2013		2012		2011
Senior unsecured fixed rate notes	$	9.3	$	2.1	$	0.0
Junior subordinated debentures		7.9		21.3		18.3
Other indebtedness		2.6		3.1		3.5
Revolving credit facility		0.0		0.0		0.0
Total interest paid	$	19.8	$	26.5	$	21.8

Non-cash operating activities transaction. In our Consolidated Balance Sheet at December 31, 2012, “Reinsurance recoverables” and “Ceded reinsurance payable, net” each included $252.3 million from the whole account quota share reinsurance transaction (see Note 5, “Reserves for Losses and Loss Adjustment Expenses” for further discussion). As cash had not been settled in 2012 related to this transaction, $252.3 million has been excluded from both the change in “Receivables” and the change in “Ceded reinsurance payable and funds held” for the year ended December 31, 2012. During 2013, $52.7 million was received related to the “Reinsurance recoverable” and is reflected in “Receivables” and $154.2 million was paid related to the “Ceded reinsurance payable, net” and is reflected in “Ceded reinsurance payable and funds held” in our Consolidated Statements of Cash flows. Additionally, the “Reinsurance recoverable” was increased by $9.2 million for a change in the estimated loss which has not been settled in cash as of December 31, 2013 and is therefore excluded from “Receivables” in our Consolidated Statements of Cash Flows.

Recently Issued Accounting Pronouncements

Recently Issued Accounting Pronouncements

In December 2011, with further clarification issued in January 2013, the FASB issued an accounting update requiring disclosures about offsetting and related arrangements to enable users of financial statements to understand the effect of those arrangements on its financial position. Entities are required to disclose both gross information and net information about both instruments and transactions eligible for offset in the statement of financial position and instruments and transactions subject to an agreement similar to a master netting arrangement. This update is applicable to derivatives including bifurcated embedded derivatives, repurchase agreements and reverse repurchase agreements and securities borrowing and securities lending arrangements. The update is effective for annual reporting periods beginning on or after January 1, 2013, and interim periods within those annual periods. The disclosures required by this update should be provided retrospectively for all comparative periods presented. The adoption of this update did not have an impact on our financial results or disclosures.

In July 2012, the FASB issued an accounting update that allows an entity the option to first assess qualitative factors to determine whether it is more likely than not that an indefinite-lived intangible asset is impaired. The more-likely-than-not threshold is defined as having a likelihood of more than 50 percent. If the more-likely-than-not threshold is met, an entity is required to determine the fair value of the indefinite-lived intangible asset and perform the quantitative impairment test by comparing the fair value with the carrying amount in accordance with accounting guidance. The update was effective for annual and interim impairment tests performed for fiscal years beginning after September 15, 2012. Early adoption was permitted, including for annual and interim impairment tests performed as of a date before July 27, 2012, if an entity’s financial statements for the most recent annual or interim period have not yet been issued or, for nonpublic entities, have not yet been made available for issuance. The adoption of this update did not have an impact on our financial results and disclosures.

In February 2013, the FASB issued an accounting update to improve the reporting of reclassifications out of accumulated other comprehensive income. An entity is required to report the effect of significant reclassifications, by component, out of accumulated other comprehensive income on the respective line items in net income if the item is required under GAAP to be reclassified in its entirety in the same reporting period. The required disclosures of the update are allowed either in the Statement of Income (Loss) or in the notes. The amendments in the update are effective for reporting periods beginning after December 15, 2012. See Note 12, “Accumulated Other Comprehensive Income (Loss)” for the required disclosures.

In February 2013, the FASB issued amendments to “Liabilities” (Topic 405) in order to resolve diversity in practice related to accounting for the recognition, measurement and disclosure of obligations resulting from joint and several liability arrangements for which the total amount of the obligation is fixed at the reporting date. The amendments require an entity to measure the liability as the sum of (a) the amount the reporting entity agreed to pay on the basis of its arrangement among its co-obligors and (b) any additional amount the reporting entity expects to pay on behalf of its co-obligors. The amendments in this update are effective for fiscal years, and interim periods within those years, beginning after December 15, 2013, but early adoption is permitted. The amendments should be applied retrospectively to all prior periods presented for those obligations resulting from joint and several liability arrangements within the update’s scope that exist at the beginning of an entity’s fiscal year of adoption. We do not anticipate this update will have an impact on our financial results and disclosures.

In March 2013, the FASB issued an amendment to “Consolidation” (Topic 810) to resolve the diversity in practice related to the release of the cumulative translation adjustment into net income when a parent sells a part of all of its investment in a foreign entity or no longer holds a controlling financial interest in a subsidiary or group of assets that is a nonprofit activity or a business within a foreign entity. The amendments in the update are effective prospectively for fiscal years, and interim reporting periods within those years, beginning after December 15, 2013, but early adoption is permitted. The amendments should be applied prospectively to derecognition events occurring after the effective date with no adjustment to prior periods. We do not anticipate this update will have an impact on our financial results and disclosures.

In July 2013, the FASB issued amendments to “Income Taxes” (Topic 740) that will require the presentation of certain unrecognized tax benefits as reductions to deferred tax assets rather than liabilities in our Consolidated Balance Sheets when a net operating loss carryforward, similar tax loss or tax credit carryforward exists. The new standard requires adoption on a prospective basis in the first quarter of 2015; however, early adoption is permitted. We do not anticipate this update will have an impact on our financial results and disclosures.

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Run-off Lines (Tables)

12 Months Ended

Dec. 31, 2013

Discontinued Operations And Disposal Groups [Abstract]

Gross Reserves for Run-Off Lines

The following table presents our gross reserves for Run-off Lines as of December 31:

(in millions)	2013		2012
Asbestos and Environmental:
Reinsurance assumed	$	45.2	$	52.2
Other		12.3		12.4
Total Asbestos and Environmental		57.5		64.6
Risk management		264.3		272.6
Run-off reinsurance lines		5.8		14.4
Other run-off lines		4.9		6.7
Total Run-off Lines	$	332.5	$	358.3

Total Gross Reserves for Asbestos Exposure

 The following table represents the total gross reserves for our asbestos exposure as of December 31:

(in millions)	2013		2012		2011
Direct written
Case reserves	$	1.7	$	2.0	$	2.8
Unallocated loss adjustment expense (“ULAE”)		1.3		1.7		2.0
Incurred but not reported (“IBNR”)		6.4		4.3		2.5
Total direct written reserves		9.4		8.0		7.3
Assumed domestic
Case reserves		15.7		18.4		21.7
ULAE		2.2		2.7		3.1
IBNR		15.8		17.4		19.7
Total assumed domestic reserves		33.7		38.5		44.5
Assumed London
Case reserves		5.8		5.9		6.2
ULAE		0.4		0.6		0.7
IBNR		1.4		2.5		4.0
Total assumed London reserves		7.6		9.0		10.9
Total asbestos reserves	$	50.7	$	55.5	$	62.7

Net Underwriting Results for Run-Off Lines

The following table presents our net underwriting results for Run-off Lines for the three years ended December 31:

(in millions)	2013			2012			2011
Asbestos and Environmental:
Reinsurance assumed	$	(3.8	)	$	(3.6	)	$	(6.7	)
Other		(7.2	)		(5.5	)		(5.0	)
Total Asbestos and Environmental		(11.0	)		(9.1	)		(11.7	)
Risk management		(5.9	)		0.9			2.6
Run-off reinsurance lines		(1.9	)		(1.1	)		(5.5	)
Other run-off lines		(0.8	)		(1.6	)		(2.2	)
Total Run-off Lines	$	(19.6	)	$	(10.9	)	$	(16.8	)

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Investments - Schedule of Investment Income and Expenses (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Amortized Cost And Fair Value Debt Securities [Abstract]
Interest and dividends on fixed maturities	$ 87.7	$ 105.9	$ 121.4
Dividends on equity securities	17.7	15.2	9.6
Interest on short-term and other investments	5.0	7.3	4.7
Other	(1.0)	(0.4)	(0.5)
Investment income	109.4	128.0	135.2
Investment expenses	(9.4)	(9.2)	(9.4)
Net investment income	$ 100.0	$ 118.8	$ 125.8

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Share-based Compensation - Summary of Stock-Settled SARs Activity Under 2007 Plan (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercised, shares	(497,652)
Stock-Settled SARs Activity [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares, Outstanding at January 1, 2013	1,261,448
Granted, Shares	333,004
Exercised, shares	(181,043)
Expired or forfeited, Shares	(124,711)
Shares, Outstanding at December 31, 2013	1,288,698
Vested or expected to vest as of year end, Shares	1,164,170
Exercisable at end of year, Shares	595,312
Weighted-Average Exercise Price, Outstanding at January 1, 2013	$ 27.04
Granted, Weighted-Average Exercise Price	$ 37.19
Exercised, Weighted-Average Exercise Price	$ 26.88
Expired or forfeited, Weighted-Average Exercise Price	$ 29.27
Weighted-Average Exercise Price, Outstanding at December 31, 2013	$ 29.47
Vested or expected to vest as of year end, Weighted-Average Exercise Price	$ 29.30
Exercisable at end of year, Weighted-Average Exercise Price	$ 26.86

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Business and Significant Accounting Policies - Supplemental Cash Flow Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Senior unsecured fixed rate notes	$ 9.3	$ 2.1	$ 0
Junior subordinated debentures	7.9	21.3	18.3
Other indebtedness	2.6	3.1	3.5
Revolving credit facility	0	0	0
Total interest paid	$ 19.8	$ 26.5	$ 21.8

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Accumulated Other Comprehensive Income (Loss) (Tables)

12 Months Ended

Dec. 31, 2013

Text Block [Abstract]

Changes in Accumulated Other Comprehensive Income (Loss)

A summary of changes in accumulated other comprehensive income (loss), net of taxes (where applicable) by component for the year ended December 31, 2013 is presented below:

(in millions)	Foreign Currency Translation Adjustments			Unrealized Holding Gains on Securities			Defined Benefit Pension Plans			Total
Beginning balance, January 1, 2013	$	(8.7	)	$	204.1		$	(5.9	)	$	189.5
Other comprehensive income (loss) before reclassifications		(2.8	)		0.2			1.3			(1.3	)
Amounts reclassified from accumulated other comprehensive income (loss)		0.0			(40.4	)		0.0			(40.4	)
Net current-period other comprehensive income (loss)		(2.8	)		(40.2	)		1.3			(41.7	)
Ending balance, December 31, 2013	$	(11.5	)	$	163.9		$	(4.6	)	$	147.8

Amounts Reclassified from Accumulated Other Comprehensive Income (Loss)

The amounts reclassified from accumulated other comprehensive income (loss) shown in the above table have been included in the following captions in our Consolidated Statements of Income (Loss):

(in millions)	Year Ended December 31, 2013
Unrealized gains and losses on securities
Net realized investment gains	$	(59.8	)
Provision for income taxes		19.4
Net of taxes	$	(40.4	)

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Business and Significant Accounting Policies

12 Months Ended

Dec. 31, 2013

Accounting Policies [Abstract]

Business and Significant Accounting Policies

1. Business and Significant Accounting Policies

Business

Argo Group International Holdings, Ltd. (“Argo Group,” “we” or the “Company”) is an international underwriter of specialty insurance and reinsurance products in the property and casualty market. Argo Group US, Inc. (“Argo Group US”) is a subsidiary of Argo Financial Holding (Ireland), Ltd. (“Argo Ireland”). Argo Underwriting Agency Limited (“Argo International”) is a subsidiary of Argo International Holdings, Ltd. Argo Re, Ltd. (“Argo Re”), a Bermuda based company, is the parent of both Argo Ireland and Argo International Holdings, Ltd. Argo Re is directly owned by Argo Group.

We conduct our ongoing business through four segments.

Excess and Surplus Lines products are written under two operating platforms: Colony Specialty and Argo Pro.

Commercial Specialty consists of the following operations: Argo Insurance, Rockwood Casualty Insurance Company (“Rockwood”), Argo Surety, Alteris and ARIS Title Insurance Corporation (“ARIS”).

International Specialty products are provided by our Bermuda operations, which include Argo Re and Argo Insurance – Casualty and Professional Lines and Argo Seguros Brasil S.A. based in Brazil.

Syndicate 1200 products are written by Argo International based in London, and are focused on underwriting on behalf of one underwriting syndicate under the Lloyd’s of London (“Lloyd’s”) global franchise.

Our Run-off Lines segment includes liabilities associated with other liability policies that were issued in the 1960s, 1970s and into the 1980s, as well as risk management policies written prior to the sale of renewal rights and other business previously written and classified as property catastrophe and Lloyd’s.

Basis of Presentation and Use of Estimates

The consolidated financial statements of Argo Group and its subsidiaries have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”). The preparation of consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and reported amounts of revenues and expenses during the reporting period. The major estimates reflected in our consolidated financial statements include, but are not limited to, reserves for losses and loss adjustment expenses; reinsurance recoverables, including the reinsurance recoverables allowance for doubtful accounts; estimates of written and earned premiums; reinsurance premium receivable; fair value of investments and assessment of potential impairment; valuation of goodwill and intangibles and our deferred tax asset valuation allowance. Actual results could differ from those estimates.

Specifically, estimates for reserves for losses and loss adjustment expenses are based upon past claim experience modified for current trends as well as prevailing economic, legal and social conditions. Although management believes that amounts included in the accompanying consolidated financial statements are reasonable, such estimates may be more or less than the amounts ultimately paid when the claims are settled. The estimates are continually reviewed and any changes are reflected in current operating results. Further, the nature of loss exposures involves significant variability due to the long-tailed payments on claims related to asbestos and environmental coverage and workers compensation coverage. As such, losses and loss adjustment expenses could vary significantly from the recorded amounts.

The consolidated financial statements include the accounts and operations of Argo Group and its subsidiaries. All material intercompany accounts and transactions have been eliminated. Certain amounts in prior years’ financial statements have been reclassified to conform to the current presentation. Amounts related to trade capital providers, who are third party capital participants that provide underwriting capital to the Syndicate 1200 segment, are included in the balance sheet. Trade capital providers participate on a quota share basis, assuming 100% of their contractual participation in the underwriting syndicate results and with such results settled on a year of account basis. The underwriting syndicate underwrites under the Lloyd’s global franchise.

In 2009, the Financial Accounting Standards Board (“FASB”) issued revised accounting standards regarding consolidation of variable interest entities. We reevaluated our investment in our twelve statutory trusts (collectively, the “Trusts”) and two charitable foundations (collectively, the “Foundations”). We determined that the Trusts and Foundations continue to be variable interest entities due to the fact that the Trusts and Foundations do not have sufficient equity to finance their activities without additional subordinate financial support from other parties. We do not have any power to direct the activities that impact the Trusts or Foundations’ economic performance. We are not entitled to receive a majority of the residual returns of the Trusts and U.S. charitable foundation. Additionally, we are not responsible for absorbing the majority of the expected losses of the Trusts or U.S. charitable foundation; therefore, we are not the primary beneficiary and, accordingly, the Trusts and U.S. charitable foundation are not included in our consolidated financial statements. The expenses and donations of the charitable foundation in Bermuda are paid by Argo Group and have been included in the consolidated results.

The special purpose reinsurance company established in 2011 to provide reinsurance to Argo Group through two catastrophe bond transactions is a variable interest entity under the provisions of Accounting Standards Codification (“ASC”) Topic 810-10, “Consolidation”. Argo Group does not have a variable interest in this entity and is therefore not required to consolidate it in its consolidated financial statements.

10% Stock Dividend

On May 7, 2013, our Board of Directors declared a 10% stock dividend, payable on June 17, 2013, to shareholders of record at the close of business on June 3, 2013. As a result of the stock dividend, 2,447,839 additional shares were issued. Cash was paid in lieu of fractional shares of our common shares. All references to share and per share amounts in this document and related disclosures have been adjusted to reflect the stock dividend for all periods presented.

Cash

Cash consists of cash deposited in banks, generally in concentration and operating accounts. Interest-bearing cash accounts are classified as short-term investments.

Investments

Investments in fixed maturities at December 31, 2013 and 2012 include bonds and structured securities. Equity securities include common and preferred stocks. Other investments consist of foreign regulatory deposits, limited partnerships, private equity funds, voluntary pools and foreign exchange currency forward contracts. Short-term investments consist of money market funds, funds on deposit with Lloyd’s as security to support the corporate member’s capital, U.S. Treasury bills, sovereign debt and interest-bearing cash accounts. Investments maturing in less than one year are classified as short-term investments in our consolidated financial statements.

The amortized cost of fixed maturity securities is adjusted for amortization of premiums and accretion of discounts. This amortization or accretion is included in “Net investment income” in our Consolidated Statements of Income (Loss).

For the structured securities portion of the fixed maturity securities portfolio, we recognize income using a constant effective yield based on anticipated prepayments and the estimated economic life of the securities. Premium or discount on high investment grade securities (rated AA or higher) is amortized into income using the retrospective method. Premium or discount on lower grade securities (rated less than AA) is amortized into income using the prospective method.

Our investments in fixed maturities and equity securities with readily determinable fair value are considered available-for-sale and are carried at fair value. Changes in the fair value of investments classified as available-for-sale are not recognized to income during the period, but rather are recognized as a separate component of shareholders’ equity until realized. Fair value of these investments is estimated using prices obtained from third party pricing services, where available. For securities where we were unable to obtain fair values from a pricing service or broker, fair values were estimated using information obtained from investment advisors. We performed several processes to ascertain the reasonableness of these investment values by i) obtaining and reviewing internal control reports for our service providers that obtain fair values from third party pricing services, ii) discussing with our investment managers their process for reviewing and validating pricing obtained from outside services and obtaining values for all securities from our investment managers and iii) comparing the security pricing received from the investment managers with the prices used in the consolidated financial statements and obtaining additional information for variances that exceeded a certain threshold. As of December 31, 2013, investments we hold for which we did not receive a fair value from a pricing service or broker accounted for less than 1% of our investment portfolio. The actual value at which these securities could actually be sold or settled with a willing buyer or seller may differ from our estimated fair values depending on a number of factors including, but not limited to, the current and future economic conditions, quantity sold or settled, presence of an active market and availability of a willing buyer or seller. The cost of securities sold is based on the specific identification method.

Changes in the value of other investments consisting of limited partnerships, private equity funds and voluntary pools are principally recognized to income during the period utilizing the equity method of accounting. Our foreign regulatory deposits are assets held in trust in jurisdictions where there is a legal and regulatory requirement to maintain funds locally in order to protect policyholders. Lloyd’s is the appointed investment manager for the funds. The underlying assets are invested in government securities, agency securities and corporate bonds whose values are obtained from Lloyd’s. Foreign currency future contracts held by us are valued by our counterparty using market driven foreign currency exchange rates.

We evaluate our investments for other-than-temporary impairment. For fixed maturity securities, the evaluation for a credit loss is generally based on the present value of expected cash flows of the security as compared to the amortized book value. For mortgage-backed securities, frequency and severity of loss inputs are used in projecting future cash flows of the securities. Loss frequency is measured as the credit default rate, which includes such factors as loan-to-value ratios and credit scores of borrowers. Loss severity includes such factors as trends in overall housing prices and house prices that are obtained at foreclosure. For equity securities, the length of time and the amount of decline in fair value are the principal factors in determining other-than-temporary impairment.

All investment balances include amounts relating to trade capital providers. The results of operations and other comprehensive income exclude amounts relating to trade capital providers. Trade capital providers’ participation in the syndicate results are included in reinsurance recoverable for ceded losses and reinsurance payable for ceded premiums.

Receivables

Premiums receivable, representing amounts due from insureds, are presented net of an allowance for doubtful accounts. The allowances for doubtful accounts were $4.5 million and $2.5 million at December 31, 2013 and 2012, respectively. Premiums receivable include amounts relating to the trade capital providers’ quota share.

Reinsurance recoverables represent amounts of paid losses and loss adjustment expenses, case reserves and incurred but not reported amounts ceded to reinsurers under reinsurance treaties. Reinsurance recoverables also reflect amounts that are due from trade capital providers. Reinsurance recoverables are presented in our Consolidated Balance Sheets net of an allowance for doubtful accounts of $3.7 million and $4.4 million at December 31, 2013 and 2012, respectively (see Note 3, “Reinsurance” for related disclosures).

An estimate of amounts that are likely to be charged off is established as an allowance for doubtful accounts as of the balance sheet date. Our estimate includes specific insured and reinsurance balances that are considered probable to be charged off after all collection efforts have ceased and in accordance with historical write-off trends based on aging categories. For the years ended December 31, 2013, 2012 and 2011, premiums receivable and reinsurance recoverables on paid losses written off, net of recoveries against the allowance for doubtful accounts or directly to the income statement are as follows:

(in millions)	2013			2012			2011
Premiums receivable	$	0.2		$	0.3		$	0.9
Reinsurance recoverables		(0.0	)		(0.4	)		11.4
Net written off (recovered)	$	0.2		$	(0.1	)	$	12.3

Recoveries occur when subsequent collection or litigation results in the receipt of amounts previously written off. Amounts recovered are applied against the bad debt expense account.

Earned Premiums

Premium revenue is recognized ratably over the policy period, with an adjustment, where appropriate, to reflect the risk profile of certain classes of business, particularly those exposed to seasonal weather related events. Premiums that have yet to be earned are reported as “Unearned premiums” in our Consolidated Balance Sheets.

Unearned premium balances include cessions to reinsurers including trade capital providers, while the earned premium recognized in our Consolidated Statements of Income (Loss) excludes amounts relating to trade capital providers. The trade capital providers’ quota share amount is included in “Ceded reinsurance payable, net”.

Assumed reinstatement premiums that reinstate coverage are written and earned at the time the associated loss event occurs. The original premium is earned over the remaining exposure period of the contract. Reinstatement premiums are estimated based upon contract terms for reported losses and estimated for incurred but not reported losses.

Goodwill and Intangible Assets

Goodwill and intangible assets are allocated to the segment in which the results of operations for the acquired company are reported (see Note 16, “Segment Information” for further discussion). Intangible assets with a finite life are amortized over the estimated useful life of the asset. Goodwill and intangible assets with an indefinite useful life are not amortized. Goodwill and intangible assets are tested for impairment on an annual basis or more frequently if events or changes in circumstances indicate that the carrying amount may not be recoverable. For goodwill, we may perform a qualitative test to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount as a basis for determining whether it is necessary to perform the quantitative two-step goodwill impairment test. Based on prior goodwill impairment testing, we determined the performance of the quantitative two-step impairment test was required for 2013. The first step is to identify if a potential impairment exists by comparing the fair value of a reporting unit with its carrying amount, including goodwill (“Step 1”). If the fair value of a reporting unit exceeds its carrying value amount, goodwill of the reporting unit is not considered to have a potential impairment and the second step is not necessary. However, if the carrying amount of the reporting unit exceeds its fair value, the second step (“Step 2”) is performed to determine if goodwill is impaired and to measure the amount of impairment loss to recognize, if any. Step 2 compares the implied fair value of goodwill with the carrying amount of goodwill. If the implied value of goodwill is less than the carrying amount of goodwill, it is written down to its fair value with a corresponding expense reflected in the Consolidated Statements of Income (Loss). The implied goodwill is calculated based on a hypothetical purchase price allocation, similar to the requirements in the accounting guidance for business combinations, whereby the implied fair value of the reporting unit is allocated to the fair value of the assets and liabilities of the reporting unit.

We perform our goodwill impairment test on the first day of the fourth quarter of each year, or October 1 of each year. In performing Step 1 of the impairment test, we estimated the fair value of reporting units using an average of three valuation methods: a comparable company analysis, a precedent transaction analysis and a discounted cash flow analysis. All three methods require management to make various judgments and assumptions. The discounted cash flow analysis included projections of earned premiums, loss ratios, expense growth and discount rates for each reporting unit. Assumptions about such future cash flows are based on our budgets, business plans, economic projections, anticipated future cash flows and market data. Finally, the comparable company analysis and precedent transaction analysis required judgment in selecting comparable companies and comparable transactions for use in the calculations. In all instances, future changes in these judgments and assumptions could cause impairment of goodwill.

For the years ended December 31, 2013, 2012 and 2011, all of our reporting units passed Step 1 of the goodwill impairment analysis. However, based on carrying values of the reporting units as of December 31, 2013, a 38% decline in the fair value of the Excess and Surplus Lines reporting unit, 21% decline in the fair value of the Commercial Specialty reporting unit or 16% decline in the fair value of the Syndicate 1200 reporting unit would have resulted in the carrying values of these reporting units being in excess of their respective fair values, resulting in the need to perform Step 2, which could have resulted in a material impairment to our goodwill. Any decline in the fair value of these reporting units could result in the carrying value of the reporting unit being in excess of fair value, triggering Step 2 of the impairment testing model, which could result in an impairment of goodwill.

As noted above, we have elected to make the first day of the fourth quarter the annual impairment assessment date for goodwill and indefinite-lived intangible assets. An impairment analysis subsequent to this date has not been performed as management believes that no additional indicators of impairment have arisen, such as significant additional pricing competition, unexpected significant declines in operating results, divestiture of a significant component of the business or a significant decline in our market capitalization.

The following table presents our intangible assets and accumulated amortization at December 31:

	December 31, 2013				December 31, 2012
(in millions)	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
Lloyd’s capacity	$	60.5		n/a	$	60.5		n/a
Title plant		1.8		n/a		1.8		n/a
Distribution network		44.8		23.1		44.2		18.0
Additional Lloyd’s capacity		4.8		3.2		4.8		2.3
Other		1.5		1.1		1.5		1.0
	$	113.4	$	27.4	$	112.8	$	21.3

The weighted average useful life by category at December 31, 2013 was 9.8 years for the distribution network, 5.0 years for the additional Lloyd’s capacity and 9.0 years for other. The weighted average useful life for all categories was 9.3 years at December 31, 2013.

During the twelve months ended December 31, 2013, 2012 and 2011, amortization expense was $6.1 million, $5.2 million and $4.6 million, respectively, and is included in “Underwriting, acquisition and insurance expenses” in our Consolidated Statements of Income (Loss).

The estimated amortization expense for the years ended December 31, 2014, 2015, 2016, 2017 and 2018 is $5.4 million, $5.4 million, $5.1 million, $4.4 million and $2.4 million, respectively.

Retrospectively Rated Policies

We have written a number of workers compensation, property and other liability policies that are retrospectively rated. Under this type of policy, the policyholder or coverholder may be entitled, subsequent to coverage expiration, to a refund or may owe additional premiums based on the amount of losses incurred under the policy. The retrospective premium adjustments on certain policies are limited to a minimum or maximum premium adjustment, which is calculated as a percentage of the standard amount of premium charged during the life of the policy. Accrued retrospectively rated premiums have been determined based on estimated ultimate loss experience of the individual policyholder accounts. The estimated liability for return of premiums under retrospectively rated policies is included in unearned premiums and was $6.8 million and $7.0 million at December 31, 2013 and 2012, respectively.

Deferred Acquisition Costs

Policy acquisition costs, which include commissions, premium taxes, fees and certain other costs of underwriting policies, are deferred, when such policies are profitable, and amortized over the same period in which the related premiums are earned. To qualify for capitalization, the policy acquisition cost must be directly related to the successful acquisition of an insurance contract. Anticipated investment income is considered in determining whether the deferred acquisition costs are recoverable and whether a premium deficiency exists. We continually review the methods of making such estimates and establishing the deferred costs with any adjustments made in the accounting period in which the adjustment arose.

The 2013 and 2012 net amortization of policy acquisition costs will not equal the change in our Consolidated Balance Sheets as the trade capital providers’ share is not reflected in our Consolidated Statements of Income (Loss) and differences arise from foreign currency exchange rates applied to deferred acquisition costs which are treated as a nonmonetary asset.

Reserves for Losses and Loss Adjustment Expenses

Liabilities for unpaid losses and loss adjustment expenses include the accumulation of individual case estimates for claims reported as well as estimates of incurred but not reported claims and estimates of claim settlement expenses. Reinsurance recoverables on unpaid claims and claim expenses represent estimates of the portion of such liabilities that will be recoverable from reinsurers. Amounts recoverable from reinsurers are recognized as assets at the same time and in a manner consistent with the unpaid claims liabilities associated with the reinsurance policy (for additional information, see heading “Reinsurance” below).

Property and Equipment

Property and equipment used in operations, including certain costs incurred to develop or obtain computer software for internal use, are capitalized and carried at cost less accumulated depreciation and are reported in “Other assets” in our Consolidated Balance Sheets. Depreciation is calculated using a straight-line method over the estimated useful lives of the assets, generally three to forty years. The accumulated depreciation for property and equipment was $65.5 million and $53.1 million at December 31, 2013 and 2012, respectively. The net book value of our property and equipment at December 31, 2013 and 2012 was $79.0 million and $68.7 million, respectively. The depreciation expense at December 31, 2013, 2012 and 2011 was $15.5 million, $12.6 million and $10.1 million, respectively.

Foreign Currency Exchange Gain (Loss)

The U.S. Dollar is the functional currency of all but two of our foreign operations. Monetary assets and liabilities in foreign operations that are denominated in foreign currencies are revalued at the exchange rates in effect at the balance sheet date. The resulting gains and losses from changes in the foreign exchange rates are reflected in net income. Revenues and expenses denominated in foreign currencies are translated at the prevailing exchange rate during the period with the resulting foreign exchange gains and losses included in net income for the period. In the case of our foreign currency denominated available-for-sale investments, the change in exchange rates between the local currency and our functional currency at each balance sheet date represents an unrealized appreciation or depreciation in value of these securities and is included as a component of accumulated other comprehensive gain.

Translation gains and losses related to our operations in Brazil and Malta are recorded as a component of shareholders’ equity in our Consolidated Balance Sheets. At December 31, 2013 and 2012, the foreign currency translation adjustments were a loss of $11.5 million and $8.7 million, respectively.

Share-Based Payments

Compensation expense for share-based payments is recognized based on the measurement-date fair value for awards that will settle in shares. Awards that are expected to be settled in cash are accounted for as liability awards, resulting in the fair value of the award being measured at each reporting date until the award is exercised, forfeited or expires unexercised. Compensation expense for awards that are settled in equity are recognized on a straight line pro rata basis over the vesting period. Compensation expense for awards that are settled in cash are recognized on the accelerated recognition method over the award’s vesting period. See Note 15, “Share-based Compensation” for related disclosures.

Income Taxes

Deferred tax assets and liabilities are recognized for the estimated future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Deferred tax assets and liabilities are measured using enacted tax rates in effect for the year in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in net income in the period in which the change is enacted.

For any uncertain tax positions not meeting the “more-likely-than-not” recognition threshold, accounting standards require recognition, measurement and disclosure in a company’s financial statements. We had no material unrecognized tax benefits as of December 31, 2013, 2012 and 2011. Our United States subsidiaries are no longer subject to U.S. federal and state income tax examinations by tax authorities for years before 2010. Our United Kingdom subsidiaries are no longer subject to United Kingdom income tax examinations by Her Majesty’s Revenue and Customs for years before 2011.

Reinsurance

In the normal course of business, our insurance and reinsurance subsidiaries reinsure various risks above certain retention levels with other insurance enterprises. Reinsurance recoverables include claims we paid and estimates of unpaid losses and loss adjustment expenses that are subject to reimbursement under reinsurance and retrocessional contracts. The method for determining reinsurance recoverables for unpaid losses and loss adjustment expenses involves reviewing actuarial estimates of gross unpaid losses and loss adjustment expenses to determine our ability to cede unpaid losses and loss adjustment expenses under our existing reinsurance contracts. This method is continually reviewed and updated and any resulting adjustments are reflected in earnings in the period identified. Reinsurance premiums, commissions and expense reimbursements are accounted for on a basis consistent with those used in accounting for the original policies issued and the term of the reinsurance contracts. Amounts recoverable from reinsurers for losses and loss adjustment expenses for which our insurance and reinsurance subsidiaries have not been relieved of their legal obligations to the policyholder are reported as assets.

Derivative Instruments

We enter into short-term, currency spot and forward contracts to mitigate foreign exchange rate exposure in our non-U.S. Dollar denominated fixed maturity investments. The forward contracts used are typically less than sixty days and are renewed as long as the non-U.S. Dollar denominated fixed maturity investments are held in our portfolio. Forward contracts are designated as hedges for accounting purposes. We also enter into foreign currency exchange forward contracts to manage currency exposure on losses related to global catastrophe events. These foreign currency forward contacts are carried at fair value in our Consolidated Balance Sheets in “Other investments.” The realized and unrealized gains and losses are included in “Net realized investment and other gains” in our Consolidated Statements of Income (Loss).

Through our subsidiary Argo Re, in 2011 we entered into two reinsurance contracts with a special purpose reinsurance company that provided us with protection against certain severe catastrophe events and the occurrence of multiple significant catastrophe events during the same year. The special purpose reinsurance company provided the reinsurance through two catastrophe bond transactions that were supported by two collateralized facilities. The reinsurance contracts were deemed to be derivatives. We recorded these contracts at fair value, and such fair value is included in “Other assets” in our Consolidated Balance Sheets with any changes in the value reflected in “Other reinsurance-related expenses” in our Consolidated Statements of Income (Loss). See Note 6, “Derivative Instruments” for related disclosures.

Supplemental Cash Flow Information

Income taxes paid. We paid income taxes of $14.2 million in 2013, $21.0 million in 2012 and $16.7 million in 2011.

Income taxes recovered. We recovered income taxes of $0.0 million in 2013, $10.0 million in 2012 and $0.2 million in 2011.

Interest paid. Interest paid for the years ended December 31, was as follows:

(in millions)	2013		2012		2011
Senior unsecured fixed rate notes	$	9.3	$	2.1	$	0.0
Junior subordinated debentures		7.9		21.3		18.3
Other indebtedness		2.6		3.1		3.5
Revolving credit facility		0.0		0.0		0.0
Total interest paid	$	19.8	$	26.5	$	21.8

Non-cash operating activities transaction. In our Consolidated Balance Sheet at December 31, 2012, “Reinsurance recoverables” and “Ceded reinsurance payable, net” each included $252.3 million from the whole account quota share reinsurance transaction (see Note 5, “Reserves for Losses and Loss Adjustment Expenses” for further discussion). As cash had not been settled in 2012 related to this transaction, $252.3 million has been excluded from both the change in “Receivables” and the change in “Ceded reinsurance payable and funds held” for the year ended December 31, 2012. During 2013, $52.7 million was received related to the “Reinsurance recoverable” and is reflected in “Receivables” and $154.2 million was paid related to the “Ceded reinsurance payable, net” and is reflected in “Ceded reinsurance payable and funds held” in our Consolidated Statements of Cash flows. Additionally, the “Reinsurance recoverable” was increased by $9.2 million for a change in the estimated loss which has not been settled in cash as of December 31, 2013 and is therefore excluded from “Receivables” in our Consolidated Statements of Cash Flows.

Recently Issued Accounting Pronouncements

In December 2011, with further clarification issued in January 2013, the FASB issued an accounting update requiring disclosures about offsetting and related arrangements to enable users of financial statements to understand the effect of those arrangements on its financial position. Entities are required to disclose both gross information and net information about both instruments and transactions eligible for offset in the statement of financial position and instruments and transactions subject to an agreement similar to a master netting arrangement. This update is applicable to derivatives including bifurcated embedded derivatives, repurchase agreements and reverse repurchase agreements and securities borrowing and securities lending arrangements. The update is effective for annual reporting periods beginning on or after January 1, 2013, and interim periods within those annual periods. The disclosures required by this update should be provided retrospectively for all comparative periods presented. The adoption of this update did not have an impact on our financial results or disclosures.

In July 2012, the FASB issued an accounting update that allows an entity the option to first assess qualitative factors to determine whether it is more likely than not that an indefinite-lived intangible asset is impaired. The more-likely-than-not threshold is defined as having a likelihood of more than 50 percent. If the more-likely-than-not threshold is met, an entity is required to determine the fair value of the indefinite-lived intangible asset and perform the quantitative impairment test by comparing the fair value with the carrying amount in accordance with accounting guidance. The update was effective for annual and interim impairment tests performed for fiscal years beginning after September 15, 2012. Early adoption was permitted, including for annual and interim impairment tests performed as of a date before July 27, 2012, if an entity’s financial statements for the most recent annual or interim period have not yet been issued or, for nonpublic entities, have not yet been made available for issuance. The adoption of this update did not have an impact on our financial results and disclosures.

In February 2013, the FASB issued an accounting update to improve the reporting of reclassifications out of accumulated other comprehensive income. An entity is required to report the effect of significant reclassifications, by component, out of accumulated other comprehensive income on the respective line items in net income if the item is required under GAAP to be reclassified in its entirety in the same reporting period. The required disclosures of the update are allowed either in the Statement of Income (Loss) or in the notes. The amendments in the update are effective for reporting periods beginning after December 15, 2012. See Note 12, “Accumulated Other Comprehensive Income (Loss)” for the required disclosures.

In February 2013, the FASB issued amendments to “Liabilities” (Topic 405) in order to resolve diversity in practice related to accounting for the recognition, measurement and disclosure of obligations resulting from joint and several liability arrangements for which the total amount of the obligation is fixed at the reporting date. The amendments require an entity to measure the liability as the sum of (a) the amount the reporting entity agreed to pay on the basis of its arrangement among its co-obligors and (b) any additional amount the reporting entity expects to pay on behalf of its co-obligors. The amendments in this update are effective for fiscal years, and interim periods within those years, beginning after December 15, 2013, but early adoption is permitted. The amendments should be applied retrospectively to all prior periods presented for those obligations resulting from joint and several liability arrangements within the update’s scope that exist at the beginning of an entity’s fiscal year of adoption. We do not anticipate this update will have an impact on our financial results and disclosures.

In March 2013, the FASB issued an amendment to “Consolidation” (Topic 810) to resolve the diversity in practice related to the release of the cumulative translation adjustment into net income when a parent sells a part of all of its investment in a foreign entity or no longer holds a controlling financial interest in a subsidiary or group of assets that is a nonprofit activity or a business within a foreign entity. The amendments in the update are effective prospectively for fiscal years, and interim reporting periods within those years, beginning after December 15, 2013, but early adoption is permitted. The amendments should be applied prospectively to derecognition events occurring after the effective date with no adjustment to prior periods. We do not anticipate this update will have an impact on our financial results and disclosures.

In July 2013, the FASB issued amendments to “Income Taxes” (Topic 740) that will require the presentation of certain unrecognized tax benefits as reductions to deferred tax assets rather than liabilities in our Consolidated Balance Sheets when a net operating loss carryforward, similar tax loss or tax credit carryforward exists. The new standard requires adoption on a prospective basis in the first quarter of 2015; however, early adoption is permitted. We do not anticipate this update will have an impact on our financial results and disclosures.

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Information Provided in Connection with Outstanding Debt of Subsidiaries - Condensed Consolidating Statement of Cash Flows (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Condensed Financial Statements, Captions [Line Items]
Net cash flows from operating activities	$ (0.2)	$ 30.5	$ (17.7)
Cash flows from investing activities:
Proceeds from sales of investments	1,966.3	1,130.7	1,370.8
Maturities and mandatory calls of fixed maturity investments	281.8	483.0	450.9
Purchases of investments	(1,975.8)	(1,621.5)	(1,794.9)
Change in short-term investments and foreign regulatory deposits	(153.0)	37.7	70.1
Settlements of foreign currency exchange forward contracts	(3.9)	0.4	7.7
Issuance of intercompany note, net	0	0	0
Other, net	31.5	0.1	(2.4)
Cash (used) provided by investing activities	120.8	(3.7)	102.1
Cash flows from financing activities:
Borrowings under intercompany note, net	0	0	0
Proceeds from issuance of senior unsecured fixed rate notes	0	138.7	0
Redemption of trust preferred securities, net	0	(117.2)	0
Activity under stock incentive plans	2.6	1.2	1.1
Repurchase of Company's common shares	(46.5)	(44.2)	(49.5)
Excess tax expense (benefit) from share-based payment arrangements	0.2	0	(0.1)
Payment of cash dividend to common shareholders	(15.8)	(12.3)	(13.1)
Cash used by financing activities	(59.5)	(33.8)	(61.6)
Effect of exchange rate changes on cash	0.5	0.1	(3.6)
Change in cash	61.6	(6.9)	19.2
Cash, beginning of year	95.8	102.7	83.5
Cash, end of year	157.4	95.8	102.7
Argo Group International Holdings, Ltd (Parent Guarantor) [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash flows from operating activities	63.2	(30.2)	71.6
Cash flows from investing activities:
Proceeds from sales of investments	0	0	0
Maturities and mandatory calls of fixed maturity investments	0	0	0
Purchases of investments	0	0	0
Change in short-term investments and foreign regulatory deposits	(1.4)	(0.9)	0
Settlements of foreign currency exchange forward contracts	0.7	2.3	1.3
Issuance of intercompany note, net	0	0	0
Other, net	0	0	(0.3)
Cash (used) provided by investing activities	(0.7)	1.4	1.0
Cash flows from financing activities:
Borrowings under intercompany note, net	(49.3)	55.0	(60.6)
Proceeds from issuance of senior unsecured fixed rate notes		0
Redemption of trust preferred securities, net		(15.1)
Activity under stock incentive plans	2.6	1.2	1.1
Repurchase of Company's common shares	0	0	0
Excess tax expense (benefit) from share-based payment arrangements	0		0
Payment of cash dividend to common shareholders	(15.8)	(12.3)	(13.1)
Cash used by financing activities	(62.5)	28.8	(72.6)
Effect of exchange rate changes on cash	0	0	0
Change in cash	0	0	0
Cash, beginning of year	0	0	0
Cash, end of year	0	0	0
Argo Group US, Inc. and Subsidiaries (Subsidiary Issuer) [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash flows from operating activities	62.5	5.5	27.6
Cash flows from investing activities:
Proceeds from sales of investments	1,130.2	573.8	869.3
Maturities and mandatory calls of fixed maturity investments	168.9	326.2	275.0
Purchases of investments	(1,156.7)	(889.1)	(1,123.5)
Change in short-term investments and foreign regulatory deposits	(119.1)	35.1	61.9
Settlements of foreign currency exchange forward contracts	0	0	0
Issuance of intercompany note, net	35.0	(26.0)	(23.5)
Other, net	(16.3)	(29.1)	(13.7)
Cash (used) provided by investing activities	42.0	(9.1)	45.5
Cash flows from financing activities:
Borrowings under intercompany note, net	0	0	0
Proceeds from issuance of senior unsecured fixed rate notes		138.7
Redemption of trust preferred securities, net		(102.1)
Activity under stock incentive plans	0	0	0
Repurchase of Company's common shares	(46.5)	(44.2)	(49.5)
Excess tax expense (benefit) from share-based payment arrangements	0.2		(0.1)
Payment of cash dividend to common shareholders	0	0	0
Cash used by financing activities	(46.3)	(7.6)	(49.6)
Effect of exchange rate changes on cash	0	0	0
Change in cash	58.2	(11.2)	23.5
Cash, beginning of year	73.9	85.1	61.6
Cash, end of year	132.1	73.9	85.1
Other Subsidiaries and Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash flows from operating activities	125.9	55.2	(16.9)
Cash flows from investing activities:
Proceeds from sales of investments	836.1	556.9	501.5
Maturities and mandatory calls of fixed maturity investments	112.9	156.8	175.9
Purchases of investments	(819.1)	(732.4)	(671.4)
Change in short-term investments and foreign regulatory deposits	(32.5)	3.5	8.2
Settlements of foreign currency exchange forward contracts	(4.6)	(1.9)	6.4
Issuance of intercompany note, net	14.3	(29.0)	84.1
Other, net	21.7	(4.9)	11.5
Cash (used) provided by investing activities	128.8	(51.0)	116.2
Cash flows from financing activities:
Borrowings under intercompany note, net	0	0	0
Proceeds from issuance of senior unsecured fixed rate notes		0
Redemption of trust preferred securities, net		0
Activity under stock incentive plans	0	0	0
Repurchase of Company's common shares	0	0	0
Excess tax expense (benefit) from share-based payment arrangements	0		0
Payment of cash dividend to common shareholders	0	0	(100.0)
Cash used by financing activities	0	0	(100.0)
Effect of exchange rate changes on cash	0.5	0.1	(3.6)
Change in cash	3.4	4.3	(4.3)
Cash, beginning of year	21.9	17.6	21.9
Cash, end of year	25.3	21.9	17.6
Consolidating Adjustments [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash flows from operating activities	0	0	(100.0)
Cash flows from investing activities:
Proceeds from sales of investments	0	0	0
Maturities and mandatory calls of fixed maturity investments	0	0	0
Purchases of investments	0	0	0
Change in short-term investments and foreign regulatory deposits	0	0	0
Settlements of foreign currency exchange forward contracts	0	0	0
Issuance of intercompany note, net	(49.3)	55.0	(60.6)
Other, net	0	0	0
Cash (used) provided by investing activities	(49.3)	55.0	(60.6)
Cash flows from financing activities:
Borrowings under intercompany note, net	49.3	(55.0)	60.6
Proceeds from issuance of senior unsecured fixed rate notes		0
Redemption of trust preferred securities, net		0
Activity under stock incentive plans	0	0	0
Repurchase of Company's common shares	0	0	0
Excess tax expense (benefit) from share-based payment arrangements	0		0
Payment of cash dividend to common shareholders	0	0	100.0
Cash used by financing activities	49.3	(55.0)	160.6
Effect of exchange rate changes on cash	0	0	0
Change in cash	0	0	0
Cash, beginning of year	0	0	0
Cash, end of year	$ 0	$ 0	$ 0

XML

Share-based Compensation - Summary of Non-Vested Shares Activity Under Amended Plan (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercised, shares	(497,652)
Amended Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares, Outstanding at January 1, 2013	210,097
Granted, Shares	0
Exercised, shares	(127,974)
Expired or forfeited, Shares	(41,814)
Shares, Outstanding at December 31, 2013	40,309
Vested and exercisable at end of year	40,309
Weighted-Average Exercise Price, Outstanding at January 1, 2013	$ 34.42
Granted, Weighted-Average Exercise Price	$ 0.00
Exercised, Weighted-Average Exercise Price	$ 29.32
Expired or forfeited, Weighted-Average Exercise Price	$ 48.01
Weighted-Average Exercise Price, Outstanding at December 31, 2013	$ 36.49
Vested and exercisable at end of year	$ 36.49
Weighted-Average Remaining Contractual Term, Outstanding at end of the year	7 months 6 days
Vested and exercisable at end of year, Weighted-Average Remaining Contractual Term	7 months 6 days
Aggregate Intrinsic Value, Outstanding at end of the year	$ 403,237
Vested and exercisable at end of year, Aggregate Intrinsic Value	$ 403,237

XML

Investments - Schedule of Amortized Cost, Gross Unrealized Gains, Gross Unrealized Losses and Fair Value of Investments (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	$ 3,836.0	$ 3,895.7
Gross Unrealized Gains	274.8	325.1
Gross Unrealized Losses	31.6	20.1
Fair Value	4,079.2	4,200.7
Credit-Financial [Member]
Schedule of Available-for-sale Securities [Line Items]
Gross Unrealized Losses	1.8
Credit-Utility [Member]
Schedule of Available-for-sale Securities [Line Items]
Gross Unrealized Losses	0.8
Other investments [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	377.4	294.8
Gross Unrealized Gains	2.8	1.2
Gross Unrealized Losses	1.3	5.0
Fair Value	378.9	291.0
Fixed maturities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	2,760.1	2,993.1
Gross Unrealized Gains	83.4	170.8
Gross Unrealized Losses	29.1	9.9
Fair Value	2,814.4	3,154.0
Fixed maturities [Member] | U.S. Governments [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	273.4	401.1
Gross Unrealized Gains	2.4	9.3
Gross Unrealized Losses	0.5	0
Fair Value	275.3	410.4
Fixed maturities [Member] | Non-U.S. Governments [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	60.9	53.1
Gross Unrealized Gains	0.3	3.6
Gross Unrealized Losses	1.0	0.1
Fair Value	60.2	56.6
Fixed maturities [Member] | Obligations of states and political subdivisions [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	563.7	551.7
Gross Unrealized Gains	22.9	44.9
Gross Unrealized Losses	8.8	0.5
Fair Value	577.8	596.1
Fixed maturities [Member] | Credit-Financial [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	426.3	382.4
Gross Unrealized Gains	15.4	25.7
Gross Unrealized Losses	1.8	0.7
Fair Value	439.9	407.4
Fixed maturities [Member] | Credit-Industrial [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	385.5	428.4
Gross Unrealized Gains	13.8	31.1
Gross Unrealized Losses	2.2	0.7
Fair Value	397.1	458.8
Fixed maturities [Member] | Credit-Utility [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	162.0	189.9
Gross Unrealized Gains	5.4	12.6
Gross Unrealized Losses	0.8	0.4
Fair Value	166.6	202.1
Fixed maturities [Member] | CMO/MBS-agency [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	219.4	375.1
Gross Unrealized Gains	9.2	20.2
Gross Unrealized Losses	1.7	0.2
Fair Value	226.9	395.1
Fixed maturities [Member] | CMO/MBS-non agency [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	19.4	12.5
Gross Unrealized Gains	0.8	1.0
Gross Unrealized Losses	0	0.2
Fair Value	20.2	13.3
Fixed maturities [Member] | CMBS [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	162.7	109.5
Gross Unrealized Gains	3.1	5.7
Gross Unrealized Losses	1.0	0.2
Fair Value	164.8	115.0
Fixed maturities [Member] | ABS-residential [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	6.8	10.1
Gross Unrealized Gains	0.3	0.2
Gross Unrealized Losses	0.5	0.8
Fair Value	6.6	9.5
Fixed maturities [Member] | ABS-non residential [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	116.8	81.3
Gross Unrealized Gains	0.5	1.2
Gross Unrealized Losses	0.1	0
Fair Value	117.2	82.5
Fixed maturities [Member] | Foreign denominated: Governments [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	207.7	262.1
Gross Unrealized Gains	4.9	9.2
Gross Unrealized Losses	5.9	4.3
Fair Value	206.7	267.0
Fixed maturities [Member] | Foreign Denominated: Credit [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	155.5	135.9
Gross Unrealized Gains	4.4	6.1
Gross Unrealized Losses	4.8	1.8
Fair Value	155.1	140.2
Equity securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	346.9	373.5
Gross Unrealized Gains	188.6	153.0
Gross Unrealized Losses	1.2	5.1
Fair Value	534.3	521.4
Short-Term Investments [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	351.6	234.3
Gross Unrealized Gains	0	0.1
Gross Unrealized Losses	0	0.1
Fair Value	$ 351.6	$ 234.3

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Statutory Accounting Principles - Statutory Net Income (Loss) for Principal Operating Subsidiaries (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Bermuda [Member]
Statutory Accounting Practices [Line Items]
Statutory net income (loss)	$ 85.1	$ (4.2)	$ (47.7)
United Kingdom [Member]
Statutory Accounting Practices [Line Items]
Statutory net income (loss)	42.3	40.7	(63.4)
United States [Member]
Statutory Accounting Practices [Line Items]
Statutory net income (loss)	$ 117.4	$ 42.9	$ 67.0

XML

Information Provided in Connection with Outstanding Debt of Subsidiaries - Condensed Consolidating Balance Sheet (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Assets
Investments	$ 4,079.2	$ 4,200.7
Cash	157.4	95.8	102.7	83.5
Accrued investment income	25.7	30.3
Premiums receivable	348.4	361.0
Reinsurance recoverables	1,263.5	1,320.9
Goodwill and other intangible assets, net	239.8	245.3
Current income taxes receivable, net	0	12.9
Deferred acquisition costs, net	113.9	99.4
Ceded unearned premiums	196.3	193.6
Other assets	166.8	129.0
Due from affiliates	0	0
Intercompany note receivable	0	0
Investments in subsidiaries	0	0
Total assets	6,591.00	6,688.90
Liabilities and Shareholders' Equity
Reserves for losses and loss adjustment expenses	3,230.3	3,223.5
Unearned premiums	779.1	730.2
Funds held and ceded reinsurance payable, net	398.4	645.8
Long-term debt	403.4	400.9
Current income taxes payable, net	5.2
Deferred tax liabilities, net	28.7	43.8
Accrued underwriting expenses and other liabilities	182.9	130.6
Intercompany note payable	0	0
Total liabilities	5,028.0	5,174.8
Total shareholders' equity	1,563.00	1,514.10	1,463.00	1,609.60
Total liabilities and shareholders' equity	6,591.00	6,688.90
Argo Group International Holdings, Ltd (Parent Guarantor) [Member]
Assets
Investments	1.1	(0.9)
Cash	0	0	0	0
Accrued investment income	0	0
Premiums receivable	0	0
Reinsurance recoverables	0	0
Goodwill and other intangible assets, net	0	0
Current income taxes receivable, net	0	0
Deferred acquisition costs, net	0	0
Ceded unearned premiums	0	0
Other assets	4.6	4.3
Due from affiliates	3.1	5.0
Intercompany note receivable	0	0
Investments in subsidiaries	1,625.2	1,621.1
Total assets	1,634.00	1,629.50
Liabilities and Shareholders' Equity
Reserves for losses and loss adjustment expenses	0	0
Unearned premiums	0	0
Funds held and ceded reinsurance payable, net	0	0
Long-term debt	49.0	49.0
Current income taxes payable, net	0
Deferred tax liabilities, net	0	0
Accrued underwriting expenses and other liabilities	15.4	11.3
Intercompany note payable	6.6	55.1
Total liabilities	71.0	115.4
Total shareholders' equity	1,563.00	1,514.10
Total liabilities and shareholders' equity	1,634.00	1,629.50
Argo Group US, Inc. and Subsidiaries (Subsidiary Issuer) [Member]
Assets
Investments	2,785.1	2,794.7
Cash	132.1	73.9	85.1	61.6
Accrued investment income	19.7	21.3
Premiums receivable	150.8	155.1
Reinsurance recoverables	1,145.9	1,155.1
Goodwill and other intangible assets, net	137.4	139.5
Current income taxes receivable, net	0.5	8.7
Deferred acquisition costs, net	55.6	54.6
Ceded unearned premiums	88.2	85.9
Other assets	97.8	82.7
Due from affiliates	1.5	1.2
Intercompany note receivable	87.4	119.6
Investments in subsidiaries	0	0
Total assets	4,702.00	4,692.30
Liabilities and Shareholders' Equity
Reserves for losses and loss adjustment expenses	2,157.0	2,226.3
Unearned premiums	425.5	415.6
Funds held and ceded reinsurance payable, net	642.4	598.4
Long-term debt	288.9	288.9
Current income taxes payable, net	8.9
Deferred tax liabilities, net	22.8	36.8
Accrued underwriting expenses and other liabilities	98.2	84.1
Intercompany note payable	0	0
Total liabilities	3,643.7	3,650.1
Total shareholders' equity	1,058.30	1,042.20
Total liabilities and shareholders' equity	4,702.00	4,692.30
Other Subsidiaries and Eliminations [Member]
Assets
Investments	1,293.0	1,406.9
Cash	25.3	21.9	17.6	21.9
Accrued investment income	6.0	9.0
Premiums receivable	197.6	205.9
Reinsurance recoverables	117.6	165.8
Goodwill and other intangible assets, net	102.4	105.8
Current income taxes receivable, net	(0.5)	4.2
Deferred acquisition costs, net	58.3	44.8
Ceded unearned premiums	108.1	107.7
Other assets	64.4	42.0
Due from affiliates	(1.5)	(1.2)
Intercompany note receivable	(87.4)	(119.6)
Investments in subsidiaries	0	0
Total assets	1,883.30	1,993.20
Liabilities and Shareholders' Equity
Reserves for losses and loss adjustment expenses	1,073.3	997.2
Unearned premiums	353.6	314.6
Funds held and ceded reinsurance payable, net	(244.0)	47.4
Long-term debt	65.5	63.0
Current income taxes payable, net	(3.7)
Deferred tax liabilities, net	5.9	7.0
Accrued underwriting expenses and other liabilities	69.3	35.2
Intercompany note payable	0	0
Total liabilities	1,319.9	1,464.4
Total shareholders' equity	563.40	528.80
Total liabilities and shareholders' equity	1,883.30	1,993.20
Consolidating Adjustments [Member]
Assets
Investments	0	0
Cash	0	0	0	0
Accrued investment income	0	0
Premiums receivable	0	0
Reinsurance recoverables	0	0
Goodwill and other intangible assets, net	0	0
Current income taxes receivable, net	0	0
Deferred acquisition costs, net	0	0
Ceded unearned premiums	0	0
Other assets	0	0
Due from affiliates	(3.1)	(5.0)
Intercompany note receivable	0	0
Investments in subsidiaries	(1,625.2)	(1,621.1)
Total assets	(1,628.30)	(1,626.10)
Liabilities and Shareholders' Equity
Reserves for losses and loss adjustment expenses	0	0
Unearned premiums	0	0
Funds held and ceded reinsurance payable, net	0	0
Long-term debt	0	0
Current income taxes payable, net	0
Deferred tax liabilities, net	0	0
Accrued underwriting expenses and other liabilities	0	0
Intercompany note payable	(6.6)	(55.1)
Total liabilities	(6.6)	(55.1)
Total shareholders' equity	(1,621.70)	(1,571.00)
Total liabilities and shareholders' equity	$ (1,628.30)	$ (1,626.10)

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Junior Subordinated Debentures (Tables)

12 Months Ended

Dec. 31, 2013

Debt Disclosure [Abstract]

Schedule of Junior Subordinated Debentures

A summary of our outstanding junior subordinated debentures at December 31, 2013 and 2012 is presented below:

(in millions)
Issue Date	Trust Preferred Pools	Maturity		Redeemable		Rate Structure	Interest Rate at December 31, 2013			Amount
Argo Group
05/15/2003	PXRE Capital Statutory Trust II		05/15/2033		05/15/2008	3M LIBOR + 4.10%		4.34	%	$	18.1
10/29/2003	PXRE Capital Trust V		10/29/2033		10/29/2008	3M LIBOR + 3.85%		4.09	%		20.6
11/06/2003	PXRE Capital Trust VI		09/30/2033		09/30/2008	3M LIBOR + 3.90%		4.15	%		10.3
Argo Group US
05/15/2003	Argonaut Group Statutory Trust I		05/15/2033		05/15/2008	3M LIBOR + 4.10%		4.34	%		15.5
12/16/2003	Argonaut Group Statutory Trust III		01/08/2034		01/08/2009	3M LIBOR + 4.10%		4.34	%		12.3
04/29/2004	Argonaut Group Statutory Trust IV		04/29/2034		04/29/2009	3M LIBOR + 3.85%		4.09	%		13.4
05/26/2004	Argonaut Group Statutory Trust V		05/24/2034		05/24/2009	3M LIBOR + 3.85%		4.09	%		12.3
05/12/2004	Argonaut Group Statutory Trust VI		05/12/2034		06/01/2009	3M LIBOR + 3.80%		4.04	%		13.4
09/17/2004	Argonaut Group Statutory Trust VII		12/15/2034		09/17/2009	3M LIBOR + 3.60%		3.84	%		15.5
09/22/2004	Argonaut Group Statutory Trust VIII		09/22/2034		09/22/2009	3M LIBOR + 3.55%		3.80	%		15.5
10/22/2004	Argonaut Group Statutory Trust IX		12/15/2034		12/15/2009	3M LIBOR + 3.60%		3.84	%		15.5
09/15/2005	Argonaut Group Statutory Trust X		09/15/2035		09/15/2010	3M LIBOR + 3.40%		3.64	%		30.9
	Total Outstanding									$	193.3
(in millions)
Issue Date	Trust Preferred Pools	Maturity		Redeemable		Rate Structure	Interest Rate at December 31, 2012			Amount
Argo Group
05/15/2003	PXRE Capital Statutory Trust II		05/15/2033		05/15/2008	3M LIBOR + 4.10%		4.41	%	$	18.1
10/29/2003	PXRE Capital Trust V		10/29/2033		10/29/2008	3M LIBOR + 3.85%		4.16	%		20.6
11/06/2003	PXRE Capital Trust VI		09/30/2033		09/30/2008	3M LIBOR + 3.90%		4.21	%		10.3
Argo Group US
05/15/2003	Argonaut Group Statutory Trust I		05/15/2033		05/15/2008	3M LIBOR + 4.10%		4.41	%		15.5
12/16/2003	Argonaut Group Statutory Trust III		01/08/2034		01/08/2009	3M LIBOR + 4.10%		4.44	%		12.3
04/29/2004	Argonaut Group Statutory Trust IV		04/29/2034		04/29/2009	3M LIBOR + 3.85%		4.16	%		13.4
05/26/2004	Argonaut Group Statutory Trust V		05/24/2034		05/24/2009	3M LIBOR + 3.85%		4.16	%		12.3
05/12/2004	Argonaut Group Statutory Trust VI		05/12/2034		06/01/2009	3M LIBOR + 3.80%		4.11	%		13.4
09/17/2004	Argonaut Group Statutory Trust VII		12/15/2034		09/17/2009	3M LIBOR + 3.60%		3.91	%		15.5
09/22/2004	Argonaut Group Statutory Trust VIII		09/22/2034		09/22/2009	3M LIBOR + 3.55%		3.86	%		15.5
10/22/2004	Argonaut Group Statutory Trust IX		12/15/2034		12/15/2009	3M LIBOR + 3.60%		3.91	%		15.5
09/15/2005	Argonaut Group Statutory Trust X		09/15/2035		09/15/2010	3M LIBOR + 3.40%		3.71	%		30.9
	Total Outstanding									$	193.3

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Insurance Assessments

12 Months Ended

Dec. 31, 2013

Insurance [Abstract]

Insurance Assessments

22. Insurance Assessments

We are required to participate in statutorily created insolvency guarantee and weather-related loss protection associations in all states in the U.S. where we are authorized to transact business. These associations were formed for the purpose of paying the claims of insolvent companies. We are assessed a pro-rata share of such claims based upon our premium writings, subject to a maximum annual assessment per line of insurance. Certain of these assessments can be recovered through premium tax offsets or policy surcharges. We do not believe that assessments on current insolvencies will have a material impact on our financial condition or results of operations. We have accrued assessments of $16.6 million and $16.4 million at December 31, 2013 and 2012, respectively.

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Disclosures about Fair Value of Financial Instruments

12 Months Ended

Dec. 31, 2013

Fair Value Disclosures [Abstract]

Disclosures about Fair Value of Financial Instruments

21. Disclosures about Fair Value of Financial Instruments

Cash. The carrying amount approximates fair value.

Investment securities and short-term investments. See Note 2, “Investments,” for additional information.

Premiums receivable and reinsurance recoverables on paid losses. The carrying value of current receivables approximates fair value. At December 31, 2013 and 2012, the carrying values of premiums receivable over 90 days were $9.8 million and $24.3 million, respectively. Included in “Reinsurance recoverables” in our Consolidated Balance Sheets at December 31, 2013 and 2012, are amounts that are due from third party trade capital providers associated with the operations of Argo International. Upon settlement, the receivable is offset against the liability also reflected in our accompanying Consolidated Balance Sheets. At December 31, 2013 and 2012, the payable was in excess of the receivable. Of our reinsurance recoverables on paid losses, excluding amounts attributable to Argo International’s third party trade capital providers, at December 31, 2013 and 2012, the carrying values over 90 days were $22.2 million and $18.0 million, respectively. Our methodology for establishing our allowances for doubtful accounts includes specifically identifying all potential uncollectible balances regardless of aging. Any of the over 90 day balances, where collectability was deemed questionable, have been included in the allowances. At December 31, 2013 and 2012, the allowance for doubtful accounts for premiums receivable was $4.5 million and $2.5 million, respectively, and the allowance for doubtful accounts for reinsurance recoverables on paid losses was $1.6 million and $2.2 million, respectively. Premiums receivable over 90 days were secured by collateral in the amount of $0.4 million at December 31, 2013 and 2012. Reinsurance recoverables on paid losses over 90 days were secured by collateral in the amount of $0.3 million at December 31, 2013 and 2012.

At December 31, 2013 and 2012, the fair value of our Junior subordinated debentures, Senior unsecured fixed rate notes and Other indebtedness was estimated using appropriate market indices or quoted prices from external sources based on current market conditions.

A summary of our financial instruments whose carrying value did not equal fair value at December 31, 2013 and 2012 is shown below:

	December 31, 2013				December 31, 2012
(in millions)	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Junior subordinated debentures	$	193.3	$	155.5	$	193.3	$	151.8
Senior unsecured fixed rate notes		143.8		116.2		143.8		143.2
Other indebtedness:
Floating rate loan stock		65.5		52.7		63.0		49.5
Note payable		0.8		0.6		0.8		0.6
	$	403.4	$	325.0	$	400.9	$	345.1

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Pension Benefits - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Unrecognized actuarial loss	$ 0
Defined benefit plans with accumulated benefit obligations in excess of plan assets	2.2	2.3
Fair value of plan assets	0	0
Contributions by employer towards savings plan	6.8	6.3	5.6
Qualified Pension Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Amount of pension related to plan	0.3	2.2
Non- Qualified Pension Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Amount of pension related to plan	$ 2.2	$ 2.3
Target Thresholds [Member] | Fixed Income Investments [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Defined Benefit Plan, Target Allocation Percentage	65.00%
Target Thresholds [Member] | Equity Investments [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Defined Benefit Plan, Target Allocation Percentage	35.00%
Actual Asset Allocation [Member] | Fixed Income Investments [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Defined Benefit Plan, Target Allocation Percentage	67.40%
Actual Asset Allocation [Member] | Equity Investments [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Defined Benefit Plan, Target Allocation Percentage	32.60%
Actual Asset Allocation [Member] | United States [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Defined Benefit Plan, Target Allocation Percentage	25.40%
Actual Asset Allocation [Member] | Foreign Equities [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Defined Benefit Plan, Target Allocation Percentage	7.20%

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Quarterly Financial Data - Unaudited (Tables)

12 Months Ended

Dec. 31, 2013

Quarterly Financial Information Disclosure [Abstract]

Quarterly Financial Data

(in millions, except per share amounts)	1st Quarter		2nd Quarter			3rd Quarter		4th Quarter			Year
2013
Total revenue	$	341.6	$	364.0		$	364.0	$	400.6		$	1,470.2
Net income before income taxes		37.5		42.8			32.9		66.5			179.7
Net income		32.7		31.7			31.0		47.8			143.2
Net income per common share
Basic*	$	1.20	$	1.18		$	1.17	$	1.80		$	5.33
Diluted*	$	1.16	$	1.13		$	1.12	$	1.74		$	5.14
Comprehensive income (loss)	$	45.7	$	(35.2	)	$	47.2	$	43.8		$	101.5
(in millions, except per share amounts)	1st Quarter		2nd Quarter			3rd Quarter		4th Quarter			Year
2012
Total revenue	$	323.1	$	318.0		$	344.5	$	350.7		$	1,336.3
Net income (loss) before income taxes		28.1		25.0			17.7		(4.1	)		66.7
Net income (loss)		19.6		24.0			13.4		(4.7	)		52.3
Net income (loss) per common share
Basic*	$	0.68	$	0.85		$	0.48	$	(0.17	)	$	1.86
Diluted*	$	0.67	$	0.84		$	0.47	$	(0.17	)	$	1.83
Comprehensive income (loss)	$	55.1	$	6.2		$	60.0	$	(19.3	)	$	102.0

* Basic and diluted net income per common share are computed independently for each quarter and full year based on the respective average number of common shares outstanding; therefore, the sum of the quarterly net income per common share data may not equal the net income per common share for the year.

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Other Indebtedness (Tables)

12 Months Ended

Dec. 31, 2013

Text Block [Abstract]

Schedule of Floating Rate Loan Stock, Notes Outstanding

A summary of the notes outstanding at December 31, 2013 and 2012 is presented below:

(in millions)
Issue Date	Currency	Maturity		Redeemable		Rate Structure	Interest Rate at December 31, 2013	Amount
12/08/2004	U.S. Dollar		11/15/2034		12/08/2009	6 month LIBOR + 4.2%	4.60%	$	6.5
09/06/2005	Euro		08/22/2035		09/06/2010	3 month LIBOR + 4.0%	4.22%		16.3
10/31/2006	U.S. Dollar		01/15/2036		01/15/2011	6 month LIBOR + 4.0%	4.40%		10.0
10/31/2006	Euro		11/22/2036		10/31/2011	3 month LIBOR + 4.0%	4.22%		14.3
06/08/2007	Euro		09/15/2037		06/08/2012	3 month LIBOR + 3.9%	4.12%		18.4
								$	65.5
(in millions)
Issue Date	Currency	Maturity		Redeemable		Rate Structure	Interest Rate at December 31, 2012	Amount
12/08/2004	U.S. Dollar		11/15/2034		12/08/2009	6 month LIBOR + 4.2%	4.93%	$	6.5
09/06/2005	Euro		08/22/2035		09/06/2010	3 month LIBOR + 4.0%	4.19%		15.5
10/31/2006	U.S. Dollar		01/15/2036		01/15/2011	6 month LIBOR + 4.0%	4.73%		10.0
10/31/2006	Euro		11/22/2036		10/31/2011	3 month LIBOR + 4.0%	4.19%		13.6
06/08/2007	Euro		09/15/2037		06/08/2012	3 month LIBOR + 3.9%	4.08%		17.4
								$	63.0

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Transactions with Related Parties

12 Months Ended

Dec. 31, 2013

Related Party Transactions [Abstract]

Transactions with Related Parties

23. Transactions with Related Parties

In 2013, our Surety unit received a submission through its established broker network to issue approximately $13 million of surety bonds on behalf of Kinetica Partners, LLC (“Kinetica”) in connection with a Gulf of Mexico pipeline project. Mr. Gary Woods, Chairman of our Board of Directors, is the President of Kinetica, and beneficially owns 10% of Kinetica through a family trust. The submission was underwritten, priced and bound in the ordinary course of business by the Surety unit. The terms and conditions of the surety bonds that were issued and the premium charged to Kinetica for issuance of the bonds, were consistent with those routinely applied and charged for similarly situated risks bound for unrelated third parties. Per the Surety unit’s standard requirements in connection with the issuance of surety bonds, Kinetica and Mr. Woods, in his personal capacity, among others, executed our Surety unit’s standard form of indemnity agreement holding our Surety unit harmless against any and all losses and expenses incurred resulting from the issuance of the surety bonds.

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Quarterly Financial Data - Unaudited

12 Months Ended

Dec. 31, 2013

Quarterly Financial Information Disclosure [Abstract]

Quarterly Financial Data - Unaudited

24. Quarterly Financial Data—Unaudited

The following tables represent unaudited quarterly financial data for the years ended December 31, 2013 and 2012. In the opinion of management, all adjustments necessary to present fairly the results of operations for such periods have been made. Total revenue, net income (loss) before income taxes and net income (loss) include realized gains or losses on the sale of investments and other. We cannot anticipate when or if similar gains or losses may occur in the future. Since financial results rely heavily on estimates, caution should be used in drawing specific conclusions from quarterly consolidated results.

(in millions, except per share amounts)	1st Quarter		2nd Quarter			3rd Quarter		4th Quarter			Year
2013
Total revenue	$	341.6	$	364.0		$	364.0	$	400.6		$	1,470.2
Net income before income taxes		37.5		42.8			32.9		66.5			179.7
Net income		32.7		31.7			31.0		47.8			143.2
Net income per common share
Basic*	$	1.20	$	1.18		$	1.17	$	1.80		$	5.33
Diluted*	$	1.16	$	1.13		$	1.12	$	1.74		$	5.14
Comprehensive income (loss)	$	45.7	$	(35.2	)	$	47.2	$	43.8		$	101.5
(in millions, except per share amounts)	1st Quarter		2nd Quarter			3rd Quarter		4th Quarter			Year
2012
Total revenue	$	323.1	$	318.0		$	344.5	$	350.7		$	1,336.3
Net income (loss) before income taxes		28.1		25.0			17.7		(4.1	)		66.7
Net income (loss)		19.6		24.0			13.4		(4.7	)		52.3
Net income (loss) per common share
Basic*	$	0.68	$	0.85		$	0.48	$	(0.17	)	$	1.86
Diluted*	$	0.67	$	0.84		$	0.47	$	(0.17	)	$	1.83
Comprehensive income (loss)	$	55.1	$	6.2		$	60.0	$	(19.3	)	$	102.0

* Basic and diluted net income per common share are computed independently for each quarter and full year based on the respective average number of common shares outstanding; therefore, the sum of the quarterly net income per common share data may not equal the net income per common share for the year.

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CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Cash flows from operating activities:
Net income (loss)	$ 143.2	$ 52.3	$ (81.9)
Adjustments to reconcile net income (loss) to net cash (used) provided by operating activities:
Amortization and depreciation	39.6	36.6	30.8
Share-based payments expense	23.3	10.5	4.6
Excess tax (benefit) expense from share-based payment arrangements	(0.2)	0	0.1
Deferred income tax provision, net	3.8	5.0	10.2
Net realized investment and other gains	(71.3)	(25.7)	(49.2)
Loss on disposals of fixed assets, net	0.2	0.3	1.0
Debt extinguishment costs	0	2.2	0
Change in:
Accrued investment income	5.3	2.0	1.2
Receivables	86.7	24.9	53.6
Deferred acquisition costs	(14.1)	2.1	12.9
Ceded unearned premiums	(4.0)	(14.5)	(15.4)
Reserves for losses and loss adjustment expenses	(8.9)	(78.9)	138.9
Unearned premiums	51.4	72.6	4.1
Ceded reinsurance payable and funds held	(246.4)	(67.5)	(97.4)
Income taxes	17.0	(1.7)	(6.7)
Accrued underwriting expenses	(4.0)	21.0	(5.8)
Other, net	(21.8)	(10.7)	(18.7)
Cash (used) provided by operating activities	(0.2)	30.5	(17.7)
Cash flows from investing activities:
Sales of fixed maturity investments	1,795.4	1,117.8	1,326.9
Maturities and mandatory calls of fixed maturity investments	281.8	483.0	450.9
Sales of equity securities	163.4	10.4	41.3
Sales of other investments	7.5	2.5	2.5
Purchases of fixed maturity investments	(1,822.9)	(1,501.5)	(1,605.6)
Purchases of equity securities	(80.0)	(104.4)	(99.6)
Purchases of other investments	(72.9)	(15.6)	(73.2)
Change in foreign regulatory deposits and voluntary pools	(7.7)	(21.0)	(7.5)
Change in short-term investments	(145.3)	58.7	77.6
Settlements of foreign currency exchange forward contracts	(3.9)	0.4	7.7
Purchases of fixed assets	(26.1)	(34.1)	(16.5)
Other, net	31.5	0.1	(2.4)
Cash (used) provided by investing activities	120.8	(3.7)	102.1
Cash flows from financing activities:
Proceeds from issuance of senior unsecured fixed rate notes, net	0	138.7	0
Redemption of trust preferred securities, net	0	(117.2)	0
Activity under stock incentive plans	2.6	1.2	1.1
Repurchase of Company's common shares	(46.5)	(44.2)	(49.5)
Excess tax expense (benefit) from share-based payment arrangements	0.2	0	(0.1)
Payment of cash dividends to common shareholders	(15.8)	(12.3)	(13.1)
Cash used by financing activities	(59.5)	(33.8)	(61.6)
Effect of exchange rate changes on cash	0.5	0.1	(3.6)
Change in cash	61.6	(6.9)	19.2
Cash, beginning of year	95.8	102.7	83.5
Cash, end of year	$ 157.4	$ 95.8	$ 102.7

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Information Provided in Connection with Outstanding Debt of Subsidiaries

12 Months Ended

Dec. 31, 2013

Text Block [Abstract]

Information Provided in Connection with Outstanding Debt of Subsidiaries

25. Information Provided in Connection with Outstanding Debt of Subsidiaries

The following tables present condensed consolidating financial information at December 31, 2013 and 2012 and for the three years ended December 31, 2013, 2012 and 2011, for Argo Group (the “Parent Guarantor”) and Argo Group US (the “Subsidiary Issuer”). The Subsidiary Issuer is an indirect 100 percent-owned subsidiary of the Parent Guarantor. Investments in subsidiaries are accounted for by the Parent Guarantor under the equity method for purposes of the supplemental consolidating presentation. Earnings of subsidiaries are reflected in the Parent Guarantor’s investment accounts and earnings. The Parent Guarantor fully and unconditionally guarantees certain of the debt of the Subsidiary Issuer. Condensed consolidating financial information of the Subsidiary Issuer is presented on a consolidated basis and consists principally of the net assets, results of operations and cash flows of operating insurance company subsidiaries.

CONDENSED CONSOLIDATING BALANCE SHEET

December 31, 2013

(in millions)

	Argo Group International Holdings, Ltd (Parent Guarantor)		Argo Group US, Inc. and Subsidiaries (Subsidiary Issuer)		Other Subsidiaries and Eliminations (1)			Consolidating Adjustments  (2)			Total
Assets
Investments	$	1.1	$	2,785.1	$	1,293.0		$	0.0		$	4,079.2
Cash		0.0		132.1		25.3			0.0			157.4
Accrued investment income		0.0		19.7		6.0			0.0			25.7
Premiums receivable		0.0		150.8		197.6			0.0			348.4
Reinsurance recoverables		0.0		1,145.9		117.6			0.0			1,263.5
Goodwill and other intangible assets, net		0.0		137.4		102.4			0.0			239.8
Current income taxes receivable, net		0.0		0.5		(0.5	)		0.0			0.0
Deferred acquisition costs, net		0.0		55.6		58.3			0.0			113.9
Ceded unearned premiums		0.0		88.2		108.1			0.0			196.3
Other assets		4.6		97.8		64.4			0.0			166.8
Due from affiliates		3.1		1.5		(1.5	)		(3.1	)		0.0
Intercompany note receivable		0.0		87.4		(87.4	)		0.0			0.0
Investments in subsidiaries		1,625.2		0.0		0.0			(1,625.2	)		0.0
Total assets	$	1,634.0	$	4,702.0	$	1,883.3		$	(1,628.3	)	$	6,591.0
Liabilities and Shareholders’ Equity
Reserves for losses and loss adjustment expenses	$	0.0	$	2,157.0	$	1,073.3		$	0.0		$	3,230.3
Unearned premiums		0.0		425.5		353.6			0.0			779.1
Funds held and ceded reinsurance payable, net		0.0		642.4		(244.0	)		0.0			398.4
Long-term debt		49.0		288.9		65.5			0.0			403.4
Current income taxes payable, net		0.0		8.9		(3.7	)		0.0			5.2
Deferred tax liabilities, net		0.0		22.8		5.9			0.0			28.7
Accrued underwriting expenses and other liabilities		15.4		98.2		69.3			0.0			182.9
Intercompany note payable		6.6		0.0		0.0			(6.6	)		0.0
Total liabilities		71.0		3,643.7		1,319.9			(6.6	)		5,028.0
Total shareholders’ equity		1,563.0		1,058.3		563.4			(1,621.7	)		1,563.0
Total liabilities and shareholders’ equity	$	1,634.0	$	4,702.0	$	1,883.3		$	(1,628.3	)	$	6,591.0

⁽¹⁾  Includes all other subsidiaries of Argo Group International Holdings, Ltd and all intercompany eliminations

⁽²⁾  Includes all Argo Group parent company eliminations

CONDENSED CONSOLIDATING BALANCE SHEET

December 31, 2012

(in millions)

	Argo Group International Holdings, Ltd (Parent Guarantor)			Argo Group US, Inc. and Subsidiaries (Subsidiary Issuer)		Other Subsidiaries and Eliminations (1)			Consolidating Adjustments  (2)			Total
Assets
Investments	$	(0.9	)	$	2,794.7	$	1,406.9		$	0.0		$	4,200.7
Cash		0.0			73.9		21.9			0.0			95.8
Accrued investment income		0.0			21.3		9.0			0.0			30.3
Premiums receivable		0.0			155.1		205.9			0.0			361.0
Reinsurance recoverables		0.0			1,155.1		165.8			0.0			1,320.9
Goodwill and other intangible assets, net		0.0			139.5		105.8			0.0			245.3
Current income taxes receivable, net		0.0			8.7		4.2			0.0			12.9
Deferred acquisition costs, net		0.0			54.6		44.8			0.0			99.4
Ceded unearned premiums		0.0			85.9		107.7			0.0			193.6
Other assets		4.3			82.7		42.0			0.0			129.0
Due from affiliates		5.0			1.2		(1.2	)		(5.0	)		0.0
Intercompany note receivable		0.0			119.6		(119.6	)		0.0			0.0
Investments in subsidiaries		1,621.1			0.0		0.0			(1,621.1	)		0.0
Total assets	$	1,629.5		$	4,692.3	$	1,993.2		$	(1,626.1	)	$	6,688.9
Liabilities and Shareholders’ Equity
Reserves for losses and loss adjustment expenses	$	0.0		$	2,226.3	$	997.2		$	0.0		$	3,223.5
Unearned premiums		0.0			415.6		314.6			0.0			730.2
Funds held and ceded reinsurance payable, net		0.0			598.4		47.4			0.0			645.8
Long-term debt		49.0			288.9		63.0			0.0			400.9
Deferred tax liabilities, net		0.0			36.8		7.0			0.0			43.8
Accrued underwriting expenses and other liabilities		11.3			84.1		35.2			0.0			130.6
Intercompany note payable		55.1			0.0		0.0			(55.1	)		0.0
Total liabilities		115.4			3,650.1		1,464.4			(55.1	)		5,174.8
Total shareholders’ equity		1,514.1			1,042.2		528.8			(1,571.0	)		1,514.1
Total liabilities and shareholders’ equity	$	1,629.5		$	4,692.3	$	1,993.2		$	(1,626.1	)	$	6,688.9

⁽¹⁾  Includes all other subsidiaries of Argo Group International Holdings, Ltd and all intercompany eliminations

⁽²⁾  Includes all Argo Group parent company eliminations

CONDENSED CONSOLIDATING STATEMENT OF INCOME

FOR THE YEAR ENDED DECEMBER 31, 2013

(in millions)

	Argo  Group International Holdings, Ltd (Parent Guarantor)		Argo Group US, Inc. and Subsidiaries (Subsidiary Issuer)			Other Subsidiaries and Eliminations (1)			Consolidating Adjustments (2)			Total
Premiums and other revenue:
Earned premiums	$	0.0	$	439.9		$	863.9		$	0.0		$	1,303.8
Net investment income (expense)		84.5		73.4			(57.9	)		0.0			100.0
Fee (expense) income, net		0.0		(4.1	)		(0.8	)		0.0			(4.9	)
Net realized investment and other gains (losses)		0.0		72.2			(0.9	)		0.0			71.3
Total revenue		84.5		581.4			804.3			0.0			1,470.2
Expenses:
Losses and loss adjustment expenses		0.0		268.6			473.4			0.0			742.0
Other reinsurance-related expenses		0.0		0.0			19.2			0.0			19.2
Underwriting, acquisition and insurance expenses		27.4		176.9			306.5			0.0			510.8
Interest expense		3.3		15.2			2.9			(1.2	)		20.2
Foreign currency exchange gain		0.0		(0.3	)		(1.4	)		0.0			(1.7	)
Total expenses		30.7		460.4			800.6			(1.2	)		1,290.5
Income before income taxes		53.8		121.0			3.7			1.2			179.7
Provision for income taxes		0.0		34.1			2.4			0.0			36.5
Net income before equity in earnings of subsidiaries		53.8		86.9			1.3			1.2			143.2
Equity in undistributed earnings of subsidiaries		89.4		0.0			0.0			(89.4	)		0.0
Net income	$	143.2	$	86.9		$	1.3		$	(88.2	)	$	143.2

⁽¹⁾  Includes all other subsidiaries of Argo Group International Holdings, Ltd. and all intercompany eliminations

⁽²⁾  Includes all Argo Group parent company eliminations

CONDENSED CONSOLIDATING STATEMENT OF INCOME

FOR THE YEAR ENDED DECEMBER 31, 2012

(in millions)

	Argo Group International Holdings, Ltd (Parent Guarantor)			Argo Group US, Inc. and Subsidiaries (Subsidiary Issuer)		Other Subsidiaries and Eliminations (1)		Consolidating Adjustments (2)			Total
Premiums and other revenue:
Earned premiums	$	0.0		$	434.2	$	752.3	$	0.0		$	1,186.5
Net investment income		0.1			86.6		32.1		0.0			118.8
Fee income, net		0.0			1.3		4.0		0.0			5.3
Net realized investment and other (losses) gains		(0.8	)		19.5		7.0		0.0			25.7
Total revenue		(0.7	)		541.6		795.4		0.0			1,336.3
Expenses:
Losses and loss adjustment expenses		0.0			300.6		447.0		0.0			747.6
Other reinsurance-related expenses		0.0			0.0		27.3		0.0			27.3
Underwriting, acquisition and insurance expenses		27.1			169.8		267.6		0.0			464.5
Interest expense		3.9			17.1		3.0		(0.3	)		23.7
Debt extinguishment costs		0.1			2.1		0.0		0.0			2.2
Foreign currency exchange loss		0.0			0.0		4.3		0.0			4.3
Total expenses		31.1			489.6		749.2		(0.3	)		1,269.6
(Loss) income before income taxes		(31.8	)		52.0		46.2		0.3			66.7
Provision for income taxes		0.0			11.1		3.3		0.0			14.4
Net (loss) income before equity in earnings of subsidiaries		(31.8	)		40.9		42.9		0.3			52.3
Equity in undistributed earnings of subsidiaries		84.1			0.0		0.0		(84.1	)		0.0
Net income	$	52.3		$	40.9	$	42.9	$	(83.8	)	$	52.3

⁽¹⁾  Includes all other subsidiaries of Argo Group International Holdings, Ltd. and all intercompany eliminations

⁽²⁾  Includes all Argo Group parent company eliminations

CONDENSED CONSOLIDATING STATEMENT OF (LOSS) INCOME

FOR THE YEAR ENDED DECEMBER 31, 2011

(in millions)

	Argo Group International Holdings, Ltd (Parent Guarantor)			Argo Group US, Inc. and Subsidiaries (Subsidiary Issuer)		Other Subsidiaries and Eliminations (1)			Consolidating Adjustments (2)			Total
Premiums and other revenue:
Earned premiums	$	0.0		$	440.7	$	641.3		$	0.0		$	1,082.0
Net investment income(3)		100.1			88.9		36.8			(100.0	)		125.8
Fee income, net		0.0			0.1		1.3			0.0			1.4
Net realized investment and other gains		0.0			36.9		12.3			0.0			49.2
Total revenue		100.1			566.6		691.7			(100.0	)		1,258.4
Expenses:
Losses and loss adjustment expenses		0.0			290.0		573.1			0.0			863.1
Other reinsurance-related expenses		0.0			0.0		5.9			0.0			5.9
Underwriting, acquisition and insurance expenses		22.6			161.5		241.6			0.0			425.7
Interest expense		5.4			15.5		1.2			0.0			22.1
Foreign currency exchange loss		0.0			0.0		3.5			0.0			3.5
Total expenses		28.0			467.0		825.3			0.0			1,320.3
Income (loss) before income taxes		72.1			99.6		(133.6	)		(100.0	)		(61.9	)
Provision (benefit) for income taxes		0.0			28.0		(8.0	)		0.0			20.0
Net income (loss) before equity in losses of subsidiaries		72.1			71.6		(125.6	)		(100.0	)		(81.9	)
Equity in undistributed losses of subsidiaries		(154.0	)		0.0		0.0			154.0			0.0
Net (loss) income	$	(81.9	)	$	71.6	$	(125.6	)	$	54.0		$	(81.9	)

⁽¹⁾  Includes all other subsidiaries of Argo Group International Holdings, Ltd. and all intercompany eliminations

⁽²⁾  Includes all Argo Group parent company eliminations

⁽³⁾  Included in net investment income for Argo Group parent is intercompany dividend activity of $100.0 million

CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS

FOR THE YEAR ENDED DECEMBER 31, 2013

(in millions)

	Argo Group International Holdings, Ltd (Parent Guarantor)			Argo Group US, Inc. and Subsidiaries (Subsidiary Issuer)			Other Subsidiaries and Eliminations (1)			Consolidating Adjustments (2)			Total
Net cash flows from operating activities	$	63.2		$	62.5		$	(125.9	)	$	0.0		$	(0.2	)
Cash flows from investing activities:
Proceeds from sales of investments		0.0			1,130.2			836.1			0.0			1,966.3
Maturities and mandatory calls of fixed maturity investments		0.0			168.9			112.9			0.0			281.8
Purchases of investments		0.0			(1,156.7	)		(819.1	)		0.0			(1,975.8	)
Change in short-term investments and foreign regulatory deposits		(1.4	)		(119.1	)		(32.5	)		0.0			(153.0	)
Settlements of foreign currency exchange forward contracts		0.7			0.0			(4.6	)		0.0			(3.9	)
Issuance of intercompany note, net		0.0			35.0			14.3			(49.3	)		0.0
Other, net		0.0			(16.3	)		21.7			0.0			5.4
Cash (used) provided by investing activities		(0.7	)		42.0			128.8			(49.3	)		120.8
Cash flows from financing activities:
Borrowings under intercompany note, net		(49.3	)		0.0			0.0			49.3			0.0
Activity under stock incentive plans		2.6			0.0			0.0			0.0			2.6
Repurchase of Company’s common shares		0.0			(46.5	)		0.0			0.0			(46.5	)
Excess tax expense from share-based payment arrangements		0.0			0.2			0.0			0.0			0.2
Payment of cash dividend to common shareholders		(15.8	)		0.0			0.0			0.0			(15.8	)
Cash (used) provided by financing activities		(62.5	)		(46.3	)		0.0			49.3			(59.5	)
Effect of exchange rate changes on cash		0.0			0.0			0.5			0.0			0.5
Change in cash		0.0			58.2			3.4			0.0			61.6
Cash, beginning of year		0.0			73.9			21.9			0.0			95.8
Cash, end of year	$	0.0		$	132.1		$	25.3		$	0.0		$	157.4

⁽¹⁾  Includes all other subsidiaries of Argo Group International Holdings, Ltd. and all intercompany eliminations

⁽²⁾  Includes all Argo Group parent company eliminations

CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS

FOR THE YEAR ENDED DECEMBER 31, 2012

(in millions)

	Argo Group International Holdings, Ltd (Parent Guarantor)			Argo Group US, Inc. and Subsidiaries (Subsidiary Issuer)			Other Subsidiaries and Eliminations (1)			Consolidating Adjustments (2)			Total
Net cash flows from operating activities	$	(30.2	)	$	5.5		$	55.2		$	0.0		$	30.5
Cash flows from investing activities:
Proceeds from sales of investments		0.0			573.8			556.9			0.0			1,130.7
Maturities and mandatory calls of fixed maturity investments		0.0			326.2			156.8			0.0			483.0
Purchases of investments		0.0			(889.1	)		(732.4	)		0.0			(1,621.5	)
Change in short-term investments and foreign regulatory deposits		(0.9	)		35.1			3.5			0.0			37.7
Settlements of foreign currency exchange forward contracts		2.3			0.0			(1.9	)		0.0			0.4
Issuance of intercompany note, net		0.0			(26.0	)		(29.0	)		55.0			0.0
Other, net		0.0			(29.1	)		(4.9	)		0.0			(34.0	)
Cash provided (used) by investing activities		1.4			(9.1	)		(51.0	)		55.0			(3.7	)
Cash flows from financing activities:
Borrowings under intercompany note, net		55.0			0.0			0.0			(55.0	)		0.0
Proceeds from issuance of senior unsecured fixed rate notes		0.0			138.7			0.0			0.0			138.7
Redemption of trust preferred securities, net		(15.1	)		(102.1	)		0.0			0.0			(117.2	)
Activity under stock incentive plans		1.2			0.0			0.0			0.0			1.2
Repurchase of Company’s common shares		0.0			(44.2	)		0.0			0.0			(44.2	)
Payment of cash dividend to common shareholders		(12.3	)		0.0			0.0			0.0			(12.3	)
Cash provided (used) by financing activities		28.8			(7.6	)		0.0			(55.0	)		(33.8	)
Effect of exchange rate changes on cash		0.0			0.0			0.1			0.0			0.1
Change in cash		0.0			(11.2	)		4.3			0.0			(6.9	)
Cash, beginning of year		0.0			85.1			17.6			0.0			102.7
Cash, end of year	$	0.0		$	73.9		$	21.9		$	0.0		$	95.8

⁽¹⁾  Includes all other subsidiaries of Argo Group International Holdings, Ltd. and all intercompany eliminations

⁽²⁾  Includes all Argo Group parent company eliminations

CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS

FOR THE YEAR ENDED DECEMBER 31, 2011

(in millions)

	Argo Group International Holdings, Ltd (Parent Guarantor)			Argo Group US, Inc. and Subsidiaries (Subsidiary Issuer)			Other Subsidiaries and Eliminations (1)			Consolidating Adjustments (2)			Total
Net cash flows from operating activities	$	71.6		$	27.6		$	(16.9	)	$	(100.0	)	$	(17.7	)
Cash flows from investing activities:
Proceeds from sales of investments		0.0			869.3			501.5			0.0			1,370.8
Maturities and mandatory calls of fixed maturity investments		0.0			275.0			175.9			0.0			450.9
Purchases of investments		0.0			(1,123.5	)		(671.4	)		0.0			(1,794.9	)
Change in short-term investments and foreign regulatory deposits		0.0			61.9			8.2			0.0			70.1
Settlements of foreign currency exchange forward contracts		1.3			0.0			6.4			0.0			7.7
Issuance of intercompany note, net		0.0			(23.5	)		84.1			(60.6	)		0.0
Other, net		(0.3	)		(13.7	)		11.5			0.0			(2.5	)
Cash provided (used) by investing activities		1.0			45.5			116.2			(60.6	)		102.1
Cash flows from financing activities:
Borrowings under intercompany note, net		(60.6	)		0.0			0.0			60.6			0.0
Activity under stock incentive plans		1.1			0.0			0.0			0.0			1.1
Repurchase of Company’s common shares		0.0			(49.5	)		0.0			0.0			(49.5	)
Excess tax benefit from share-based payment arrangements		0.0			(0.1	)		0.0			0.0			(0.1	)
Payment of cash dividend to common shareholders		(13.1	)		0.0			(100.0	)		100.0			(13.1	)
Cash (used) provided by financing activities		(72.6	)		(49.6	)		(100.0	)		160.6			(61.6	)
Effect of exchange rate changes on cash		0.0			0.0			(3.6	)		0.0			(3.6	)
Change in cash		0.0			23.5			(4.3	)		0.0			19.2
Cash, beginning of year		0.0			61.6			21.9			0.0			83.5
Cash, end of year	$	0.0		$	85.1		$	17.6		$	0.0		$	102.7

⁽¹⁾  Includes all other subsidiaries of Argo Group International Holdings, Ltd. and all intercompany eliminations

⁽²⁾  Includes all Argo Group parent company eliminations

XML

Senior Unsecured Fixed Rate Notes - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Debt Instrument [Line Items]
Debt instrument maturity date	Dec. 16, 2013
Proceeds, net of issuance costs, from sale of notes	$ 0	$ 138,700,000	$ 0
Senior unsecured fixed rate notes	143,800,000	143,800,000
Senior Unsecured Fixed Rate Notes [Member]
Debt Instrument [Line Items]
Principal amount of senior note		143,750,000
Debt instrument interest rate stated percentage		6.50%
Debt instrument maturity date		Sep. 15, 2042
Initial maturity date		2017-09-15
Debt instrument redemption percentage		100.00%
Proceeds, net of issuance costs, from sale of notes		138,700,000
Trust preferred Securities repay		118,600,000
Senior unsecured fixed rate notes	$ 143,800,000	$ 143,800,000

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Share-Based Compensation - Deferred Compensation Plan for Non-Employee Directors - Additional Information (Detail) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Schedule Of Share Repurchase Programs [Line Items]
Deferred compensation arrangement with individual, description	Under the Directors Plan, non-employee directors could elect each year to defer payment of 0%, 50% or 100% of their cash compensation payable during the next calendar year.
Deferred compensation arrangement with individual, employer contribution percentage	75.00%
Deferred compensation arrangement with individual, distributions period, months	6 months
Deferred compensation arrangement with individual, shares authorized for issuance	1,650
2007 Plan [Member]
Schedule Of Share Repurchase Programs [Line Items]
Deferred compensation arrangement with individual, interest rate	Two percent above the prime rate
Share-based compensation arrangement by share-based payment award, discount from market price	50.00%
2007 Plan [Member] | Minimum [Member]
Schedule Of Share Repurchase Programs [Line Items]
Share-based compensation arrangement by share-based payment award, discount from market price	0.00%
2007 Plan [Member] | Maximum [Member]
Schedule Of Share Repurchase Programs [Line Items]
Share-based compensation arrangement by share-based payment award, discount from market price	100.00%
Deferred Compensation Plan [Member]
Schedule Of Share Repurchase Programs [Line Items]
Employee service share-based compensation, cash paid to exercise of stock options	$ 1.9
Deferred compensation arrangement with individual, compensation expense	2.0	1.2	0.6
Liability for stock awards	$ 3.5

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Reinsurance (Tables)

12 Months Ended

Dec. 31, 2013

Insurance [Abstract]

Schedule of Reinsurance Premiums

Premiums for the years ended December 31 were as follows:

(in millions)	2013			2012			2011
Direct written premiums	$	1,576.1		$	1,428.6		$	1,261.3
Reinsurance ceded to other companies		(537.1	)		(501.2	)		(473.0	)
Reinsurance assumed from other companies		312.3			317.1			283.5
Net written premiums	$	1,351.3		$	1,244.5		$	1,071.8
Direct earned premiums	$	1,541.0		$	1,372.2		$	1,267.6
Reinsurance ceded to other companies		(533.7	)		(487.0	)		(457.5	)
Reinsurance assumed from other companies		296.5			301.3			271.9
Net earned premiums	$	1,303.8		$	1,186.5		$	1,082.0
Percentage of reinsurance assumed to net earned premiums		22.7	%		25.4	%		25.1	%

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Leases (Tables)

12 Months Ended

Dec. 31, 2013

Leases [Abstract]

Schedule of Future Minimum Payments Under Non-Cancelable Operating Leases

At December 31, 2013, the future minimum payments under non-cancelable operating leases are as follows:

(in millions)	Amount Due
2014	$	11.1
2015		10.8
2016		8.5
2017		7.5
2018		5.9
Thereafter		13.8
Total	$	57.6

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Reinsurance - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Reinsurance Disclosures [Abstract]
Allowance for uncollectible reinsurance balances receivable on paid losses and incurred claims	$ 3.7	$ 4.4
Amount of collateral under reinsurance agreement	154.2	252.3
Paid loss recoverables in insurance recoverables	140.8	208.3
Losses and loss adjustment expenses	742.0	747.6	863.1
Net of amounts ceded to reinsurers	$ 292.8	$ 223.6	$ 290.0

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CONSOLIDATED BALANCE SHEETS (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Assets
Available-for-sale (cost: 2013-$2,760.1; 2012-$2,993.1)	$ 2,814.4	$ 3,154.0
Equity securities, at fair value (cost: 2013-$346.9; 2012-$373.5)	534.3	521.4
Other investments (cost: 2013-$377.4; 2012-$294.8)	378.9	291.0
Short-term investments, at fair value (cost: 2013 - $351.6; 2012 - $234.3)	351.6	234.3
Total investments	4,079.2	4,200.7
Cash	157.4	95.8
Accrued investment income	25.7	30.3
Premiums receivable	348.4	361.0
Reinsurance recoverables	1,263.5	1,320.9
Goodwill	153.8	153.8
Intangible assets, net of accumulated amortization	86.0	91.5
Current income taxes receivable, net	0	12.9
Deferred acquisition costs, net	113.9	99.4
Ceded unearned premiums	196.3	193.6
Other assets	166.8	129.0
Total assets	6,591.0	6,688.9
Liabilities and Shareholders' Equity
Reserves for losses and loss adjustment expenses	3,230.3	3,223.5
Unearned premiums	779.1	730.2
Accrued underwriting expenses	122.3	105.0
Ceded reinsurance payable, net	354.7	612.1
Funds held	43.7	33.7
Senior unsecured fixed rate notes	143.8	143.8
Other indebtedness	66.3	63.8
Junior subordinated debentures	193.3	193.3
Current income taxes payable, net	5.2	0
Deferred tax liabilities, net	28.7	43.8
Other liabilities	60.6	25.6
Total liabilities	5,028.0	5,174.8
Shareholders' equity:
Common shares-$1.00 par, 500,000,000 shares authorized; 34,066,889 and 31,384,271 shares issued and outstanding at December 31, 2013 and 2012, respectively	34.1	31.4
Additional paid-in capital	827.3	722.7
Treasury shares (7,558,345 and 6,459,613 shares at December 31, 2013 and 2012, respectively)	(250.6)	(205.5)
Retained earnings	804.4	776.0
Accumulated other comprehensive income, net of taxes	147.8	189.5
Total shareholders' equity	1,563.0	1,514.1
Total liabilities and shareholders' equity	$ 6,591.0	$ 6,688.9

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Shareholders' Equity (Tables)

12 Months Ended

Dec. 31, 2013

Equity [Abstract]

Schedule of Repurchase of Shares

In 2013, we repurchased shares under Securities Exchange Act of 1934 Rule 10b5-1 trading plans as follows:

Date Trading	2013	Number of		Average Price of		Total Cost		Repurchase
Plan Initiated	Purchase Period	Shares Repurchased		Shares Repurchased		(in millions)		Authorization Year
12/14/2012	01/01/13-01/17/13(1)		171,480	$	35.41	$	6.0		2011
03/15/2013	03/16/13-05/01/13		205,452	$	40.75	$	8.3		2011
06/14/2013	06/18/13-07/31/13		195,217	$	43.47	$	8.5		2011

⁽¹⁾  The above table only reflects the 2013 activity under this Rule 10b5-1 trading plan. In 2012, 117,663 shares were repurchased under this Rule 10b5-1 trading plan for a total cost of $3.9 million with an average price of $33.38. Total shares repurchased in 2012 and 2013 under this Rule 10b5-1 trading plan were 289,143 shares at an average price of $34.58 for a total cost of $9.9 million.

Schedule of Authorized and Unissued Common Shares Reserved

At December 31, 2013, we had the following authorized, unissued common shares reserved for future issuance:

Reserve Name	Shares Reserved
2007 Long-Term Incentive Plan		3,945,354
2007 Employee Share Purchase Plan		1,432,683
Historical stock compensation plans		44,785
Total		5,422,822

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Underwriting, Acquisition and Insurance Expenses - Underwriting, Acquisition and Insurance Expenses (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Other Income And Expenses [Abstract]
Commissions	$ 229.6	$ 198.2	$ 183.2
General expenses	272.8	248.0	210.1
Premium taxes, boards and bureaus	24.2	22.8	24.7
Underwriting Acquisition and Insurance Expenses, Total	526.6	469.0	418.0
Net (deferral) amortization of policy acquisition costs	(15.8)	(4.5)	7.7
Total underwriting, acquisition and insurance expenses	$ 510.8	$ 464.5	$ 425.7

XML

Information Provided in Connection With Outstanding Debt of Subsidiaries - Additional Information (Detail)	Dec. 31, 2013
Debt Disclosure [Abstract]
Ownership Percentage	100.00%

XML

Share-Based Compensation - Employees Share Purchase Plans - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Minimum [Member]
Schedule Of Share Repurchase Programs [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting period, years	1 year
Maximum [Member]
Schedule Of Share Repurchase Programs [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting period, years	4 years
2007 Employee Share Purchase Plan [Member]
Schedule Of Share Repurchase Programs [Line Items]
Share-based compensation arrangement by share-based payment award, discount from market price	85.00%
Share-based compensation arrangement by share-based payment award, award vesting period, years	3 months
Share-based compensation arrangement by share-based payment award, compensation expense	$ 23.0	$ 10.3	$ 4.4
Earn Plan [Member]
Schedule Of Share Repurchase Programs [Line Items]
Share-based compensation arrangement by share-based payment award, discount from market price	85.00%
Share-based compensation arrangement by share-based payment award, compensation expense	$ 0.3	$ 0.2	$ 0.1
Earn Plan [Member] | Minimum [Member]
Schedule Of Share Repurchase Programs [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting period, years	3 years
Earn Plan [Member] | Maximum [Member]
Schedule Of Share Repurchase Programs [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting period, years	5 years

XML

CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (USD $) In Millions	Total	Common Shares [Member]	Additional Paid-In Capital [Member]	Treasury Shares [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Beginning Balance at Dec. 31, 2010	$ 1,609.60	$ 31.20	$ 711.40	$ (111.60)	$ 831.00	$ 147.60
Net income	(81.9)	0	0	0	(81.9)	0
Other comprehensive income (loss)	(7.8)	0	0	0	0	(7.8)
Repurchase of common shares (1,098,732 at a weighted average price of $41.04)	(49.3)	0	0	(49.3)	0	0
Activity under stock incentive plans	4.8	0.1	4.7	0	0	0
Retirement of common shares (tax payments on non-vested stock)	(0.4)	0	(0.4)	0	0	0
Deferred tax-share-based payments	(0.1)	0	(0.1)	0	0	0
Employee stock purchase plan	1.2	0	1.2	0	0	0
Cash dividend declared - common shares	(13.1)	0	0	0	(13.1)	0
Ending Balance at Dec. 31, 2011	1,463.00	31.30	716.80	(160.90)	736.00	139.80
Net income	52.3	0	0	0	52.3	0
Other comprehensive income (loss)	49.7	0	0	0	0	49.7
Repurchase of common shares (1,098,732 at a weighted average price of $41.04)	(44.6)	0	0	(44.6)	0	0
Activity under stock incentive plans	5.2	0.1	5.1	0	0	0
Retirement of common shares (tax payments on non-vested stock)	(0.4)	0	(0.4)	0	0	0
Deferred tax-share-based payments	0	0	0	0	0	0
Employee stock purchase plan	1.2	0	1.2	0	0	0
Cash dividend declared - common shares	(12.3)	0	0	0	(12.3)	0
Ending Balance at Dec. 31, 2012	1,514.10	31.40	722.70	(205.50)	776.00	189.50
Net income	143.2	0	0	0	143.2	0
Other comprehensive income (loss)	(41.7)	0	0	0	0	(41.7)
Repurchase of common shares (1,098,732 at a weighted average price of $41.04)	(45.1)	0	0	(45.1)	0	0
Activity under stock incentive plans	8.7	0.2	8.5	0	0	0
Retirement of common shares (tax payments on non-vested stock)	(1.9)	0	(1.9)	0	0	0
Deferred tax-share-based payments	0.1	0	0.1	0	0	0
Employee stock purchase plan	1.4	0.1	1.3	0	0	0
10% stock dividend	0	2.4	96.6	0	(99.0)	0
Cash dividend declared - common shares	(15.8)	0	0	0	(15.8)	0
Ending Balance at Dec. 31, 2013	$ 1,563.00	$ 34.10	$ 827.30	$ (250.60)	$ 804.40	$ 147.80

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Accumulated Other Comprehensive Income (Loss) - Changes in Accumulated Other Comprehensive Income (Loss) (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Accumulated Other Comprehensive Income Loss Net Of Tax [Abstract]
Beginning balance, Foreign currency translation adjustments	$ (8.7)
Other comprehensive income (loss) before reclassifications, Foreign currency translation adjustments	(2.8)
Amounts reclassified from accumulated other comprehensive income (loss), Foreign currency translation adjustments	0
Net current-period other comprehensive income (loss), Foreign currency translation adjustments	(2.8)
Ending balance, Foreign currency translation adjustments	(11.5)	(8.7)
Beginning balance, Unrealized holding gains on securities	204.1
Other comprehensive income (loss) before reclassifications, Unrealized holding gains on securities	0.2
Amounts reclassified from accumulated other comprehensive income (loss), Unrealized holding gains on securities	(40.4)
Net current-period other comprehensive income (loss), Unrealized holding gains on securities	(40.2)
Ending balance, Unrealized holding gains on securities	163.9	204.1
Beginning balance, Defined benefit pension plans	(5.9)
Other comprehensive income (loss) before reclassifications, Defined benefit pension plans	1.3
Amounts reclassified from accumulated other comprehensive income (loss), Defined benefit pension plans	0
Net current-period other comprehensive income (loss), Defined benefit pension plans	1.3
Ending balance, Defined benefit pension plans	(4.6)	(5.9)
Beginning balance	189.5
Other comprehensive income (loss) before reclassifications	(1.3)
Amounts reclassified from accumulated other comprehensive income (loss)	(40.4)
Other comprehensive (loss) income, net of tax	(41.7)	49.7	(7.8)
Ending balance	$ 147.8	$ 189.5

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Information Provided in Connection with Outstanding Debt of Subsidiaries - Condensed Consolidating Statement of (Loss) Income (Parenthetical) (Detail) (Argo Group International Holdings, Ltd (Parent Guarantor) [Member], USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011
Argo Group International Holdings, Ltd (Parent Guarantor) [Member]
Condensed Financial Statements, Captions [Line Items]
Intercompany dividend	$ 100.0

XML

Schedule II - Schedule of Balance Sheets (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Condensed Financial Statements, Captions [Line Items]
Other assets	$ 166.8	$ 129.0
Total assets	6,591.00	6,688.90
Intercompany note payable	0	0
Accrued underwriting expenses	122.3	105.0
Other liabilities	60.6	25.6
Total liabilities	5,028.0	5,174.8
Shareholders' equity	1,563.00	1,514.10	1,463.00	1,609.60
Total liabilities and shareholders' equity	6,591.00	6,688.90
Registrant [Member]
Condensed Financial Statements, Captions [Line Items]
Other investments, unrealized loss on foreign currency exchange forward contracts	(1.4)	(1.9)
Short-term investments	2.5	1.0
Investment in subsidiaries	1,625.20	1,621.10
Due from subsidiaries	3.1	5.0
Other assets	4.6	4.3
Total assets	1,634.00	1,629.50
Junior subordinated debentures	49.0	49.0
Intercompany note payable	6.6	55.1
Accrued underwriting expenses	15.4	10.8
Other liabilities	0	0.5
Total liabilities	71.0	115.4
Shareholders' equity	1,563.00	1,514.10
Total liabilities and shareholders' equity	$ 1,634.00	$ 1,629.50

XML

Business and Significant Accounting Policies - Summary of Receivables (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Premiums receivable	$ 0.2	$ 0.3	$ 0.9
Reinsurance recoverables	0	(0.4)	11.4
Net written off (recovered)	$ 0.2	$ (0.1)	$ 12.3

XML

Pension Benefits - Schedule of Change in Projected Benefit Obligation (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Compensation And Retirement Disclosure [Abstract]
Projected benefit obligation at beginning of year	$ 24.6	$ 22.7
Interest cost	0.8	1.0	1.0
Actuarial (gain) loss	(0.8)	2.7
Benefits paid	(2.0)	(1.8)
Projected benefit obligation at end of year	$ 22.6	$ 24.6	$ 22.7

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Schedule V Valuation and Qualifying Accounts

12 Months Ended

Dec. 31, 2013

Valuation And Qualifying Accounts [Abstract]

Schedule V Valuation and Qualifying Accounts

ARGO GROUP INTERNATIONAL HOLDINGS, LTD.

SCHEDULE V

VALUATION AND QUALIFYING ACCOUNTS

(in millions)

	Balance at Beginning of Year		Charged to Cost and Expense			Capital Loss Carryforward		Net Operating Loss Carryforward		Charged to Other Accounts		Deductions		Balance at End of Year
Year ended December 31, 2013
Deducted from assets:
Valuation allowance for deferred tax asset	$	52.5	$	(1.0	)	$	0.0	$	0.0	$	4.7	$	0.0	$	56.2
Year ended December 31, 2012
Deducted from assets:
Valuation allowance for deferred tax asset	$	50.4	$	(1.0	)	$	0.0	$	0.0	$	3.1	$	0.0	$	52.5
Year ended December 31, 2011
Deducted from assets:
Valuation allowance for deferred tax asset	$	49.6	$	(1.0	)	$	0.0	$	0.0	$	1.8	$	0.0	$	50.4

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Disclosures about Fair Value of Financial Instruments - Summary of Company's Financial Instruments Whose Carrying Amount Did Not Equal Fair Value (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying Amount	$ 403.4	$ 400.9
Fair Value	325.0	345.1
Junior Subordinated Debentures [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying Amount	193.3	193.3
Fair Value	155.5	151.8
Senior Unsecured Fixed Rate Notes [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying Amount	143.8	143.8
Fair Value	116.2	143.2
Other Indebtedness [Member] | Floating Rate Loan Stock [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying Amount	65.5	63.0
Fair Value	52.7	49.5
Other Indebtedness [Member] | Notes Payable [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying Amount	0.8	0.8
Fair Value	$ 0.6	$ 0.6

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Investments - Schedule of Aging of Unrealized Losses on Company's Investments in Fixed Maturities, Equity Securities and Other Investments (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Schedule of Investments [Line Items]
Fair Value, Less Than One Year	$ 907.9	$ 490.3
Unrealized Losses, Less Than One Year	30.2	17.0
Fair Value, One Year or Greater	22.6	28.2
Unrealized Losses, One Year or Greater	1.4	3.1
Fair Value, Total	930.5	518.5
Unrealized Losses, Total	31.6	20.1
Non-US Governments [Member]
Schedule of Investments [Line Items]
Fair Value, Less Than One Year	36.3
Unrealized Losses, Less Than One Year	1.0
Fair Value, One Year or Greater	0
Unrealized Losses, One Year or Greater	0
Fair Value, Total	36.3
Unrealized Losses, Total	1.0
Credit-Financial [Member]
Schedule of Investments [Line Items]
Fair Value, Less Than One Year	88.7
Unrealized Losses, Less Than One Year	1.7
Fair Value, One Year or Greater	2.4
Unrealized Losses, One Year or Greater	0.1
Fair Value, Total	91.1
Unrealized Losses, Total	1.8
Credit-Utility [Member]
Schedule of Investments [Line Items]
Fair Value, Less Than One Year	21.2
Unrealized Losses, Less Than One Year	0.7
Fair Value, One Year or Greater	1.9
Unrealized Losses, One Year or Greater	0.1
Fair Value, Total	23.1
Unrealized Losses, Total	0.8
Agency [Member]
Schedule of Investments [Line Items]
Fair Value, Less Than One Year	58.4
Unrealized Losses, Less Than One Year	1.2
Fair Value, One Year or Greater	5.6
Unrealized Losses, One Year or Greater	0.5
Fair Value, Total	64.0
Unrealized Losses, Total	1.7
Other investments [Member]
Schedule of Investments [Line Items]
Fair Value, Less Than One Year	(1.4)	11.6
Unrealized Losses, Less Than One Year	1.3	5.0
Fair Value, One Year or Greater	0	0
Unrealized Losses, One Year or Greater	0	0
Fair Value, Total	(1.4)	11.6
Unrealized Losses, Total	1.3	5.0
Fixed maturities [Member]
Schedule of Investments [Line Items]
Fair Value, Less Than One Year	879.3	418.5
Unrealized Losses, Less Than One Year	27.7	7.7
Fair Value, One Year or Greater	22.6	21.9
Unrealized Losses, One Year or Greater	1.4	2.2
Fair Value, Total	901.9	440.4
Unrealized Losses, Total	29.1	9.9
Fixed maturities [Member] | U.S. Governments [Member]
Schedule of Investments [Line Items]
Fair Value, Less Than One Year	55.3	11.9
Unrealized Losses, Less Than One Year	0.5	0
Fair Value, One Year or Greater	0	0
Unrealized Losses, One Year or Greater	0	0
Fair Value, Total	55.3	11.9
Unrealized Losses, Total	0.5	0
Fixed maturities [Member] | Non-US Governments [Member]
Schedule of Investments [Line Items]
Fair Value, Less Than One Year		8.5
Unrealized Losses, Less Than One Year		0.1
Fair Value, One Year or Greater		0.5
Unrealized Losses, One Year or Greater		0
Fair Value, Total		9.0
Unrealized Losses, Total		0.1
Fixed maturities [Member] | Obligations of states and political subdivisions [Member]
Schedule of Investments [Line Items]
Fair Value, Less Than One Year	154.6	28.2
Unrealized Losses, Less Than One Year	8.8	0.3
Fair Value, One Year or Greater	3.1	0.8
Unrealized Losses, One Year or Greater	0	0.2
Fair Value, Total	157.7	29.0
Unrealized Losses, Total	8.8	0.5
Fixed maturities [Member] | Credit-Financial [Member]
Schedule of Investments [Line Items]
Fair Value, Less Than One Year		25.0
Unrealized Losses, Less Than One Year		0.2
Fair Value, One Year or Greater		8.6
Unrealized Losses, One Year or Greater		0.5
Fair Value, Total		33.6
Unrealized Losses, Total	1.8	0.7
Fixed maturities [Member] | Credit-Industrial [Member]
Schedule of Investments [Line Items]
Fair Value, Less Than One Year	85.7	32.2
Unrealized Losses, Less Than One Year	2.0	0.4
Fair Value, One Year or Greater	2.9	3.0
Unrealized Losses, One Year or Greater	0.2	0.3
Fair Value, Total	88.6	35.2
Unrealized Losses, Total	2.2	0.7
Fixed maturities [Member] | Credit-Utility [Member]
Schedule of Investments [Line Items]
Fair Value, Less Than One Year		8.4
Unrealized Losses, Less Than One Year		0.2
Fair Value, One Year or Greater		0.8
Unrealized Losses, One Year or Greater		0.2
Fair Value, Total		9.2
Unrealized Losses, Total	0.8	0.4
Fixed maturities [Member] | CMBS [Member]
Schedule of Investments [Line Items]
Fair Value, Less Than One Year	24.2	5.7
Unrealized Losses, Less Than One Year	1.0	0
Fair Value, One Year or Greater	1.1	3.5
Unrealized Losses, One Year or Greater	0	0.2
Fair Value, Total	25.3	9.2
Unrealized Losses, Total	1.0	0.2
Fixed maturities [Member] | ABS-residential [Member]
Schedule of Investments [Line Items]
Fair Value, Less Than One Year	0	0
Unrealized Losses, Less Than One Year	0	0
Fair Value, One Year or Greater	3.6	3.9
Unrealized Losses, One Year or Greater	0.5	0.8
Fair Value, Total	3.6	3.9
Unrealized Losses, Total	0.5	0.8
Fixed maturities [Member] | ABS-non residential [Member]
Schedule of Investments [Line Items]
Fair Value, Less Than One Year	59.1	13.7
Unrealized Losses, Less Than One Year	0.1	0
Fair Value, One Year or Greater	2.0	0.2
Unrealized Losses, One Year or Greater	0	0
Fair Value, Total	61.1	13.9
Unrealized Losses, Total	0.1	0
Fixed maturities [Member] | Foreign denominated: Governments [Member]
Schedule of Investments [Line Items]
Fair Value, Less Than One Year	170.5	180.5
Unrealized Losses, Less Than One Year	5.9	4.3
Fair Value, One Year or Greater	0	0.3
Unrealized Losses, One Year or Greater	0	0
Fair Value, Total	170.5	180.8
Unrealized Losses, Total	5.9	4.3
Fixed maturities [Member] | Foreign Denominated: Credit [Member]
Schedule of Investments [Line Items]
Fair Value, Less Than One Year	125.3	76.3
Unrealized Losses, Less Than One Year	4.8	1.8
Fair Value, One Year or Greater	0	0
Unrealized Losses, One Year or Greater	0	0
Fair Value, Total	125.3	76.3
Unrealized Losses, Total	4.8	1.8
Fixed maturities [Member] | CMO/MBS-agency [Member]
Schedule of Investments [Line Items]
Fair Value, Less Than One Year		26.4
Unrealized Losses, Less Than One Year		0.2
Fair Value, One Year or Greater		0.3
Unrealized Losses, One Year or Greater		0
Fair Value, Total		26.7
Unrealized Losses, Total	1.7	0.2
Fixed maturities [Member] | CMO/MBS-non agency [Member]
Schedule of Investments [Line Items]
Fair Value, Less Than One Year		1.7
Unrealized Losses, Less Than One Year		0.2
Fair Value, One Year or Greater		0
Unrealized Losses, One Year or Greater		0
Fair Value, Total		1.7
Unrealized Losses, Total	0	0.2
Equity securities [Member]
Schedule of Investments [Line Items]
Fair Value, Less Than One Year	25.5	60.2
Unrealized Losses, Less Than One Year	1.2	4.2
Fair Value, One Year or Greater	0	6.3
Unrealized Losses, One Year or Greater	0	0.9
Fair Value, Total	25.5	66.5
Unrealized Losses, Total	1.2	5.1
Short-Term Investments [Member]
Schedule of Investments [Line Items]
Fair Value, Less Than One Year	4.5	0
Unrealized Losses, Less Than One Year	0	0.1
Fair Value, One Year or Greater	0	0
Unrealized Losses, One Year or Greater	0	0
Fair Value, Total	4.5	0
Unrealized Losses, Total	$ 0	$ 0.1

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Share-based Compensation

12 Months Ended

Dec. 31, 2013

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Share-based Compensation

15. Share-based Compensation

The fair value method of accounting is used for equity-based compensation plans. Under the fair value method, compensation cost is measured based on the fair value of the award at the measurement date and recognized over the requisite service period. We use the Black-Scholes model to estimate the fair values on the measurement date for share options and share appreciation rights (“SARs”). The Black-Scholes model uses several assumptions to value a share award. The volatility assumption is based on the historical change in Argo Group’s stock price over the previous five years preceding the measurement date. The risk-free rate of return assumption is based on the five-year U.S. Treasury constant maturity rate on the measurement date. The expected award life is based upon the average holding period over the history of the incentive plan. The expected dividend yield is based on our history and expected dividend payouts. The following table summarizes the assumptions we used for the years ended December 31, 2013, 2012 and 2011:

	2013	2012	2011
Risk-free rate of return	0.80% to 1.71%	0.68% to 1.11%	0.81% to 2.07%
Expected dividend yields	1.49% to 1.67%	1.58% to 1.67%	1.37% to 1.56%
Expected award life (years)	4.91 to 5.07	5.03 to 5.06	5.04 to 5.07
Expected volatility	26.3% to 32.1%	32.1% to 32.8%	32.2% to 32.8%

We estimate forfeitures based on historical forfeitures patterns, thereby recognizing expense only for those awards that are expected to vest. The estimate of forfeitures is adjusted as actual forfeitures differ from our estimate, resulting in recognition of compensation expense only for those awards that actually vest.

The compensation expense recognized under the share-based payment plans was $23.0 million ($18.3 million, net of tax), $10.3 million ($8.4 million, net of tax) and $4.4 million ($4.0 million, net of tax) for the years ended December 31, 2013, 2012 and 2011, respectively. The compensation expense is included in “Underwriting, acquisition and insurance expenses” in our Consolidated Statements of Income (Loss).

We present all tax benefits resulting from the exercise of stock options and vesting of non-vested shares as cash flows from financing activities. Excess tax benefits are realized tax benefits from tax deductions for exercised options and vested shares in excess of the deferred tax asset attributable to stock compensation costs for such options. Such tax benefits and cash flows were immaterial for all reporting periods.

All outstanding awards were adjusted to reflect the 10% stock dividend, resulting in a 10% increase to the number of awards outstanding and a 9.09% reduction in the exercise price.

Argo Group’s 2007 Long-Term Incentive Plan

In November 2007, the shareholders of Argo Group approved the 2007 Long-Term Incentive Plan (the “2007 Plan”), which provides for an aggregate of 4.5 million shares of our common stock that may be issued to executives, non-employee directors and other key employees. The share awards may be in the form of share options, SARs, restricted shares, restricted share units, performance units, performance shares or other share-based incentive awards. Shares issued under this plan may be shares that are authorized and unissued or shares that we reacquired, including shares purchased on the open market. Share options and SARs will count as one share for the purposes of the limits under the 2007 Plan; restricted shares, restricted share units, performance units, performance shares or other share-based incentive awards that settle in common shares will count as 2.75 shares for purpose of the limits under the 2007 Plan.

Share options may be in the form of incentive share options, non-qualified share options and restorative options. Share options are required to have an exercise price that is not less than the market value on the date of grant. We are prohibited from repricing the options. The term of the share options cannot exceed seven years from the grant date.

A summary of option activity under the 2007 Plan as of December 31, 2013 and changes during the year is as follows:

						Weighted-Average		Aggregate
				Weighted-Average		Remaining		Intrinsic
	Shares			Exercise Price		Contractual Term		Value
Outstanding at January 1, 2013		418,325		$	33.56
Granted		0		$	0.00
Exercised		(215,182	)	$	32.89
Expired or forfeited		(45,051	)	$	34.21
Outstanding at December 31, 2013		158,092		$	34.27		1.3	$	1,931,749
Vested and exercisable at end of year		158,092		$	34.27		1.3	$	1,931,749

Options outstanding under this plan vested over a one to five year period, subject to continued employment. As of December 31, 2013, all options under this plan were fully vested. Cash received for the exercise of options under this plan was $6.4 million for the year ended December 31, 2013.

The aggregate intrinsic value is calculated as the difference between the exercise price of the underlying awards and the quoted price of our common stock for those options where the exercise price was below the quoted price at December 31, 2013.

There were no options granted under this plan during the year ended December 31, 2013 and 2012. The weighted-average grant date fair value of options granted during the year ended December 31, 2011 was $10.47.

A summary of restricted share activity under the 2007 Plan as of December 31, 2013 and changes during the year is as follows:

				Weighted-Average
				Grant Date
	Shares			Fair Value
Outstanding at January 1, 2013		236,139		$	30.09
Granted		127,288		$	38.18
Vested and issued		(55,551	)	$	30.55
Expired or forfeited		(49,901	)	$	35.34
Outstanding at December 31, 2013		257,975		$	32.97

As of December 31, 2013, there was $5.7 million of total unrecognized compensation cost related to restricted share compensation arrangements granted by Argo Group. The weighted-average period over which this unrecognized expense is expected to be recognized is 2.0 years. The total fair value of shares vested during the year ended December 31, 2013 was $1.7 million.

A summary of stock-settled SARs activity under the 2007 Plan as of December 31, 2013 and changes during the year is as follows:

				Weighted-Average
	Shares			Exercise Price
Outstanding at January 1, 2013		1,261,448		$	27.04
Granted		333,004		$	37.19
Exercised		(181,043	)	$	26.88
Expired or forfeited		(124,711	)	$	29.27
Outstanding at December 31, 2013		1,288,698		$	29.47
Vested or expected to vest as of end of year		1,164,170		$	29.30
Exercisable at end of year		595,312		$	26.86

The stock-settled SARs vest over a one to four year period. Upon exercise of the stock-settled SARs, the employee is entitled to receive shares of our common stock equal to the appreciation of the stock as compared to the exercise price. For the year ended December 31, 2013, 181,043 stock-settled SARs were exercised resulting in 44,983 shares being issued. As of December 31, 2013, there was $4.2 million of total unrecognized compensation cost related to stock-settled SARs outstanding. The weighted-average period over which this unrecognized expense is expected to be recognized is 2.3 years. Aggregate intrinsic value of the stock-settled SARs at December 31, 2013 was $21.9 million.

A summary of cash-settled SARs activity under the 2007 Plan as of December 31, 2013 and changes during the year is as follows:

				Weighted-Average
	Shares			Exercise Price
Outstanding at January 1, 2013		1,886,615		$	29.76
Granted		556,107		$	39.73
Exercised		(497,652	)	$	29.49
Expired or forfeited		(201,312	)	$	29.91
Outstanding at December 31, 2013		1,743,758		$	33.00
Vested or expected to vest as of end of year		1,480,261		$	32.83
Exercisable at end of year		381,310		$	29.57

The cash-settled SARs vest over a one to four year period. Upon exercise of the cash-settled SARs, the employee is entitled to receive cash payment for the appreciation in the value of our common stock over the exercise price. We account for the cash-settled SARs as liability awards, which require the awards to be revalued at each reporting period. For the year ended December 31, 2013, 497,652 cash-settled SARs were exercised resulting in $6.5 million in cash payments. During each of the years ended December 31, 2012 and 2011, we made cash payments related to cash-settled SARs of $0.1 million. As of December 31, 2013, there was $10.2 million of total unrecognized compensation cost related to cash-settled SARs outstanding. The weighted-average period over which this unrecognized expense is expected to be recognized is 2.4 years. Aggregate intrinsic value of the cash-settled SARs at December 31, 2013 was $23.5 million. The liability for cash-settled SARs was $19.4 million at December 31, 2013.

Included in the total shares outstanding at December 31, 2013 are 30,510 restricted shares, 556,107 cash-settled SARs and 230,037 stock-settled SARs whose vesting is contingent on the employee meeting defined performance conditions. Employees have a specified time period in which to meet the performance condition (typically one year) and forfeit the grant (on a pro rata basis) if the performance conditions are not met in the specified time frame. We evaluate the likelihood of the employee completing the performance condition and include this estimate in the determination of the forfeiture factor for the grants.

We have granted to certain key employees restricted share units, which provide the employee with the economic equivalent of stock ownership. Each restricted share unit is valued at the closing price of our common stock on the national exchange on which it is listed as of the date credited, and fluctuates daily thereafter. The restricted share units outstanding under this plan vest over a 24 to 48 month period, subject to continued employment. Upon vesting, the employee receives a cash payment equivalent to the number of restricted share units vested valued at the closing market price of our common shares. Total expense recognized for the restricted share units totaled $0.9 million, $0.6 million and $0.7 million for the years ended December 31, 2013, 2012 and 2011, respectively. Cash payments paid for vested awards under this plan totaled $1.2 million and $0.7 million for the years ended December 31, 2013 and 2012, respectively.

Employees Share Purchase Plans

Argo Group has established an employee stock purchase plan for eligible employees (Argo Group’s 2007 Employee Share Purchase Plan). Under this plan, shares of Argo Group common stock may be purchased over an offering period of three months at 85% of the lower of the market value on the first day of the offering period or on the designated purchase date at the end of the offering period. Argo Group has also established a Save As You Earn Plan for its United Kingdom employees (Argo Group’s Save As You Earn Plan). Under this plan, shares of Argo Group common stock may be purchased over an offering period of three or five years at 85% of the market value of the common shares on the first day of the offering period. Expense recognized under these plans for the years ended December 31, 2013, 2012 and 2011 was $0.3 million, $0.2 million and $0.1 million, respectively.

Argo Group International Holdings, Ltd. Deferred Compensation Plan for Non-Employee Directors

Until December 16, 2013, the non-employee members of our Board of Directors were entitled to participate in the Argo Group International Holdings, Ltd. Deferred Compensation Plan for Non-Employee Directors (“Directors Plan”), a non-funded and non-qualified deferred compensation plan. Under the Directors Plan, non-employee directors could elect each year to defer payment of 0%, 50% or 100% of their cash compensation payable during the next calendar year. While no further deferrals will be permitted under the Directors Plan from and after December 16, 2013, and certain amounts thereunder were paid out prior to the end of 2013, additional deferred amounts remain subject to the terms of the Directors Plan and will be paid out in accordance with the terms of the Directors Plan. Deferred amounts are credited with interest earned at a rate two percent above the prime commercial lending rate, to be reset each May 1. In addition, the Directors Plan calls for us to grant a match equal to 75% of the cash compensation amounts deferred in the form of “Stock Units,” which provide directors with the economic equivalent of stock ownership and are credited as a bookkeeping entry to each director’s “Stock Unit Account.” Each Stock Unit is valued at the closing price of our common stock on the national exchange on which it is listed as of the date credited for all purposes under the Directors Plan and fluctuates daily thereafter on that same basis. The Directors Plan provided for a Stock Unit Account to be established for each non-employee director upon their election to the Board and credits their account with an initial bookkeeping entry for 1,650 Stock Units. In conjunction with the termination of the Directors Plan during the year ended December 31, 2013, all cash balances for the years 2010 through 2013 and related interest were settled resulting in $1.9 million in cash payments. Remaining distributions from the Directors Plan will occur six months after the non-employee director ceases to be a member of the Board, the date on which a change in control (as defined in the Directors Plan) occurs or December 1, 2017, whichever comes first, and will be made in cash. The non-employee directors are responsible for all tax requirements on the deferred compensation and any related earnings. Under the Directors Plan, we recorded compensation expense of $2.0 million, $1.2 million and $0.6 million for the years ended December 31, 2013, 2012 and 2011, respectively. The liability for remaining distributions under the Directors Plan was $3.5 million at December 31, 2013.

Argonaut Group’s Amended and Restated Stock Incentive Plan

The historical Argonaut Group’s Amended and Restated Stock Incentive Plan, which was frozen in August 2007 (the “Amended Plan”), provided for an aggregate of up to 6,250,000 shares of our common stock that may be issued to certain executives and other key employees. The stock awards were issued in the form of non-qualified stock options and non-vested stock. Grants under the Amended Plan have a legal life of seven to eleven years. As of December 31, 2013, all awards under this plan were fully vested.

A summary of option activity under the Amended Plan as of December 31, 2013 and changes during the year is as follows:

						Weighted-Average		Aggregate
				Weighted-Average		Remaining		Intrinsic
	Shares			Exercise Price		Contractual Term		Value
Outstanding at January 1, 2013		210,097		$	34.42
Granted		0		$	0.00
Exercised		(127,974	)	$	29.32
Expired or forfeited		(41,814	)	$	48.01
Outstanding at December 31, 2013		40,309		$	36.49		0.6	$	403,237
Vested and exercisable at end of year		40,309		$	36.49		0.6	$	403,237

The aggregate intrinsic value is calculated as the difference between the exercise price of the underlying awards and the quoted price of our common stock for those options where the exercise price was below the quoted price at December 31, 2013. Total intrinsic value of options exercised during the years ended December 31, 2013, 2012 and 2011 were $0.8 million, $0.2 million and $0.1 million, respectively.

For the year ended December 31, 2013, we received cash payments of $3.5 million (net of any related tax payments) related to the settlement of stock options exercised under the Amended Plan.

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Schedule VI Supplementary Information for Property-Casualty Insurance Companies

12 Months Ended

Dec. 31, 2013

Supplemental Information For Property Casualty Insurance Underwriters [Abstract]

Schedule VI Supplementary Information for Property-Casualty Insurance Companies

ARGO GROUP INTERNATIONAL HOLDINGS, LTD.

SCHEDULE VI

SUPPLEMENTARY INFORMATION FOR PROPERTY-CASUALTY INSURANCE COMPANIES

(in millions)

	For the Years Ended December 31,
	2013			2012			2011
Deferred acquisition costs	$	113.9		$	99.4		$	101.5
Reserves for losses and loss adjustment expenses	$	3,230.3		$	3,223.5		$	3,291.1
Unamortized discount in reserves for losses	$	19.5		$	20.8		$	22.0
Unearned premiums	$	779.1		$	730.2		$	658.2
Premiums earned	$	1,303.8		$	1,186.5		$	1,082.0
Net investment income	$	100.0		$	118.8		$	125.8
Losses and loss adjustment expenses incurred:
Current year	$	775.6		$	780.5		$	866.5
Prior years		(33.6	)		(32.9	)		(3.4	)
Losses and loss adjustment expenses incurred	$	742.0		$	747.6		$	863.1
(Deferral) amortization of policy acquisition costs (1)	$	(15.8	)	$	(4.5	)	$	7.7
Paid losses and loss adjustment expenses, net of reinsurance	$	753.5		$	796.5		$	812.6
Gross premiums written	$	1,888.4		$	1,745.7		$	1,544.8

⁽¹⁾ The amortization (deferral) of policy acquisition costs will not equal the change in the balance sheet. For further discussion, see Note 1, “Business and Significant Accounting Policies.”

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Pension Benefits - Schedule of Change in Plan Assets (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Compensation And Retirement Disclosure [Abstract]
Fair value of plan assets at beginning of year	$ 20.1	$ 19.7
Actual return on plan assets	1.9	2.0
Employer contributions	0.2	0.2
Settlements and benefits paid	(2.0)	(1.8)
Fair value of plan assets at end of year	$ 20.2	$ 20.1

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Run-Off Lines - Total Gross Reserves for Asbestos Exposure (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total direct written reserves	$ 9.4	$ 8.0	$ 7.3
Total assumed domestic reserves	33.7	38.5	44.5
Total assumed London reserves	7.6	9.0	10.9
Total asbestos reserves	50.7	55.5	62.7
Case Reserves [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total direct written reserves	1.7	2.0	2.8
Total assumed domestic reserves	15.7	18.4	21.7
Total assumed London reserves	5.8	5.9	6.2
ULAE [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total direct written reserves	1.3	1.7	2.0
Total assumed domestic reserves	2.2	2.7	3.1
Total assumed London reserves	0.4	0.6	0.7
IBNR [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total direct written reserves	6.4	4.3	2.5
Total assumed domestic reserves	15.8	17.4	19.7
Total assumed London reserves	$ 1.4	$ 2.5	$ 4.0

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Run-off Lines

12 Months Ended

Dec. 31, 2013

Discontinued Operations And Disposal Groups [Abstract]

Run-off Lines

17. Run-off Lines

We have discontinued active underwriting of certain lines of business, including those lines that were previously recorded in Argonaut Group’s Risk Management segment. All current activity within these lines is related to the management of claims and other administrative functions. Also included in Run-off Lines are other liability reserves, which include exposure to claims for asbestos and environmental liabilities written in past years. The other liability reserves are often characterized by long elapsed periods between the occurrence of a claim and ultimate payment to resolve the claim. We use a specialized staff dedicated to administer and settle these claims.

The following table presents our gross reserves for Run-off Lines as of December 31:

(in millions)	2013		2012
Asbestos and Environmental:
Reinsurance assumed	$	45.2	$	52.2
Other		12.3		12.4
Total Asbestos and Environmental		57.5		64.6
Risk management		264.3		272.6
Run-off reinsurance lines		5.8		14.4
Other run-off lines		4.9		6.7
Total Run-off Lines	$	332.5	$	358.3

We have received asbestos and environmental liability claims arising from other liability coverage primarily written in the 1960s, 1970s and into the mid-1980s. Asbestos and environmental claims originate from policies directly written by us and from reinsurance assumed during this period, including a portion assumed from the London market. The following table represents the total gross reserves for our asbestos exposure as of December 31:

(in millions)	2013		2012		2011
Direct written
Case reserves	$	1.7	$	2.0	$	2.8
Unallocated loss adjustment expense (“ULAE”)		1.3		1.7		2.0
Incurred but not reported (“IBNR”)		6.4		4.3		2.5
Total direct written reserves		9.4		8.0		7.3
Assumed domestic
Case reserves		15.7		18.4		21.7
ULAE		2.2		2.7		3.1
IBNR		15.8		17.4		19.7
Total assumed domestic reserves		33.7		38.5		44.5
Assumed London
Case reserves		5.8		5.9		6.2
ULAE		0.4		0.6		0.7
IBNR		1.4		2.5		4.0
Total assumed London reserves		7.6		9.0		10.9
Total asbestos reserves	$	50.7	$	55.5	$	62.7

The following table presents our net underwriting results for Run-off Lines for the three years ended December 31:

(in millions)	2013			2012			2011
Asbestos and Environmental:
Reinsurance assumed	$	(3.8	)	$	(3.6	)	$	(6.7	)
Other		(7.2	)		(5.5	)		(5.0	)
Total Asbestos and Environmental		(11.0	)		(9.1	)		(11.7	)
Risk management		(5.9	)		0.9			2.6
Run-off reinsurance lines		(1.9	)		(1.1	)		(5.5	)
Other run-off lines		(0.8	)		(1.6	)		(2.2	)
Total Run-off Lines	$	(19.6	)	$	(10.9	)	$	(16.8	)

Reserves for asbestos and environmental claims cannot be estimated with traditional loss reserving techniques that rely on historical accident year loss development factors. The uncertainty in the asbestos and environmental reserves estimates arises from several factors including lack of historical data, inapplicability of standard actuarial projection techniques, uncertainty with regards to claim costs, coverage interpretations and judicial, statutory and regulatory provisions under which the claims may be ultimately resolved. It is impossible to predict how the courts will interpret coverage issues and these resolutions may have a material impact on the ultimate resolution of the asbestos and environmental liabilities. We use a variety of estimation methods to calculate reserves as a whole; however, reserves for asbestos and environmental claims were determined primarily based on the report year method with some weight applied to other methods. The report year method relies most heavily on our historical claims and severity information. Other methods rely more heavily on industry information. Although management has recorded its best estimate of loss reserves, due to the uncertainties of estimation of liabilities that may arise as discussed herein, further deterioration of claims could occur in the future.

Please see Note 5, “Reserves for Losses and Loss Adjustment Expenses” for further discussion.

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Investments - Schedule of Company's Gross Realized Investment Gains (Losses) (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Schedule of Investments [Line Items]
Gross realized investment and other gains	$ 131.6	$ 54.4	$ 74.2
Gross realized investment and other losses	(60.3)	(28.7)	(25.0)
Net realized investment and other gains	71.3	25.7	49.2
Other investments [Member]
Schedule of Investments [Line Items]
Gross realized investment and other gains	38.9	21.5	16.1
Gross realized investment and other losses	(30.8)	(15.1)	(10.5)
Fixed maturities [Member]
Schedule of Investments [Line Items]
Gross realized investment and other gains	33.5	27.2	30.5
Gross realized investment and other losses	(19.6)	(9.1)	(11.6)
Equity securities [Member]
Schedule of Investments [Line Items]
Gross realized investment and other gains	59.1	0.4	26.6
Gross realized investment and other losses	(1.4)	(0.5)	(0.7)
Short-Term Investments [Member]
Schedule of Investments [Line Items]
Gross realized investment and other gains	0.1	0.5	1.0
Gross realized investment and other losses	(0.7)	(0.3)	(1.0)
Gain On Sale Of Affiliate [Member]
Schedule of Investments [Line Items]
Gross realized investment and other gains	0	4.8	0
Other-than-temporary impairment losses on fixed maturities [Member]
Schedule of Investments [Line Items]
Gross realized investment and other losses	(6.0)	(1.5)	(0.1)
Other-than-temporary impairment losses on equity securities [Member]
Schedule of Investments [Line Items]
Gross realized investment and other losses	$ (1.8)	$ (2.2)	$ (1.1)

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Share-Based Compensation - 2007 Long-Term Incentive Plan - Additional Information (Detail) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Nov. 30, 2007
Schedule Of Share Repurchase Programs [Line Items]
Share-based compensation arrangement by share-based payment award, number of shares authorized	5,422,822
Share-based compensation arrangement by share-based payment award, terms of award	Share options and SARs will count as one share for the purposes of the limits under the 2007 Plan; restricted shares, restricted share units, performance units, performance shares or other share-based incentive awards that settle in common shares will count as 2.75 shares for purpose of the limits under the 2007 Plan.
Count of restricted shares, settle in common shares	2.75
Exercised, shares	497,652
Maximum [Member]
Schedule Of Share Repurchase Programs [Line Items]
Term of shares options, (in years)	Seven years
Share-based compensation arrangement by share-based payment award, award vesting period, maximum, month period	4 years
Minimum [Member]
Schedule Of Share Repurchase Programs [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting period, maximum, month period	1 year
2007 Plan [Member]
Schedule Of Share Repurchase Programs [Line Items]
Share-based compensation arrangement by share-based payment award, number of shares authorized				4,500,000
Cash received for exercise of stock options	$ 6.4
Granted, Weighted-Average Grant Date Fair Value			$ 10.47
Options granted during the period	0	0
Exercised, shares	215,182
2007 Plan [Member] | Maximum [Member]
Schedule Of Share Repurchase Programs [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting period, maximum, month period	5 years
2007 Plan [Member] | Minimum [Member]
Schedule Of Share Repurchase Programs [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting period, maximum, month period	1 year
Cash-Settled SARs Activity [Member]
Schedule Of Share Repurchase Programs [Line Items]
Employee service share-based compensation, unrecognized compensation costs on nonvested awards	10.2
Employee service share-based compensation, unrecognized compensation costs weighted-average period, years	2 years 4 months 24 days
Share based compensation arrangement by share based payment award options exercises, intrinsic value	23.5
Employee service share-based compensation, cash paid to exercise of stock options	6.5	0.1	0.1
Liability for stock awards	19.4
Share based compensation arrangement by share based payment award options, outstanding	556,107
Share based compensation arrangement by share based payment award, expense recognized for restricted share units	0.9	0.6	0.7
Cash-Settled SARs Activity [Member] | Maximum [Member]
Schedule Of Share Repurchase Programs [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting period, maximum, month period	48 months
Cash-Settled SARs Activity [Member] | Minimum [Member]
Schedule Of Share Repurchase Programs [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting period, maximum, month period	24 months
Restricted Share Units [Member]
Schedule Of Share Repurchase Programs [Line Items]
Employee service share-based compensation, unrecognized compensation costs on nonvested awards	5.7
Employee service share-based compensation, unrecognized compensation costs weighted-average period, years	2 years
Share-based compensation arrangement by share-based payment award, total fair value of shares vested	1.7
Employee service share-based compensation, cash paid to exercise of stock options	1.2	0.7
Share based compensation arrangement by share based payment award options, outstanding	30,510
Stock-Settled SARs Activity [Member]
Schedule Of Share Repurchase Programs [Line Items]
Employee service share-based compensation, unrecognized compensation costs on nonvested awards	4.2
Employee service share-based compensation, unrecognized compensation costs weighted-average period, years	2 years 3 months 18 days
Exercised, shares	181,043
Share based compensation arrangement by share based payment award, shares issued	44,983
Share based compensation arrangement by share based payment award options exercises, intrinsic value	$ 21.9
Share based compensation arrangement by share based payment award options, outstanding	230,037
Stock-Settled SARs Activity [Member] | Maximum [Member]
Schedule Of Share Repurchase Programs [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting period, maximum, month period	4 years
Stock-Settled SARs Activity [Member] | Minimum [Member]
Schedule Of Share Repurchase Programs [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting period, maximum, month period	1 year

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CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Parenthetical) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Statement Of Stockholders Equity [Abstract]
Common shares repurchased	1,098,732	1,488,308	1,607,745
Repurchase of common shares, weighted average price	$ 41.04	$ 29.92	$ 30.72
Stock dividend declared	10.00%
Cash dividend declared - common shares, per share	$ 0.59	$ 0.44	$ 0.44

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CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Millions, except Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Statement Of Financial Position [Abstract]
Available-for-sale cost	$ 2,760.1	$ 2,993.1
Equity securities cost	346.9	373.5
Other investments cost	377.4	294.8
Short-term investments, Cost	$ 351.6	$ 234.3
Common shares, par value	$ 1.00	$ 1.00
Common shares, shares authorized	500,000,000	500,000,000
Common shares, shares issued	34,066,889	31,384,271
Common shares, shares outstanding	34,066,889	31,384,271
Treasury shares, shares	7,558,345	6,459,613

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Shareholders' Equity

12 Months Ended

Dec. 31, 2013

Equity [Abstract]

Shareholders' Equity

10. Shareholders’ Equity

On February 15, 2013, our Board of Directors declared a quarterly cash dividend in the amount of $0.15 on each shares of common stock outstanding or $0.14 on each share outstanding adjusted for the 10% stock dividend discussed below. On March 15, 2013, we paid $3.7 million to our shareholders of record on March 1, 2013.

On May 7, 2013, our Board of Directors declared a 10% stock dividend, payable on June 17, 2013, to shareholders of record at the close of business on June 3, 2013. As a result of the stock dividend, 2,447,839 additional shares were issued. Cash was paid in lieu of fractional shares of our common shares. All references to share and per share amounts in this document and related disclosures have been adjusted to reflect the stock dividend for all periods presented.

On May 7, 2013, August 6, 2013 and November 4, 2013, our Board of Directors declared a quarterly cash dividend in the amount of $0.15 on each share of common stock outstanding, on a post stock dividend basis. On March 15, 2013, June 20, 2013, September 16, 2013 and December 16, 2013, we paid $3.7 million, $4.1 million, $4.0 million and $4.0 million to our shareholders of record on March 1, 2013, June 3, 2013, September 2, 2013 and December 2, 2013, respectively. For the year ended December 31, 2013, we paid cash dividends totaling $15.8 million to our shareholders.

On February 15, 2012, May 8, 2012, August 7, 2012 and November 6, 2012, our Board of Directors declared a quarterly cash dividend in the amount of $0.11 on each share of common stock outstanding. On March 15, 2012, June 15, 2012, September 18, 2012 and December 17, 2012, we paid $3.2 million, $3.1 million, $3.0 million and $3.0 million to our shareholders of record on March 1, 2012, June 1, 2012, September 4, 2012 and December 3, 2012, respectively. For the year ended December 31, 2012, we paid cash dividends totaling $12.3 million to our shareholders.

On February 18, 2011, May 3, 2011, August 5, 2011 and November 8, 2011, our Board of Directors declared a quarterly cash dividend in the amount of $0.11 on each share of common stock outstanding. On March 15, 2011, June 15, 2011, September 15, 2011 and December 15, 2011, we paid $3.3 million, $3.3 million, $3.3 million and $3.2 million to our shareholders of record on March 1, 2011, June 1, 2011, September 1, 2011 and December 1, 2011, respectively. For the year ended December 31, 2011, we paid cash dividends totaling $13.1 million to our shareholders.

We are authorized to issue 30 million shares of $1.00 par value preferred shares. As of December 31, 2013 and 2012, no preferred shares were issued and outstanding.

On February 18, 2011, our Board of Directors authorized the repurchase of up to $150.0 million of our common shares (“2011 Repurchase Authorization”). The 2011 Repurchase Authorization supersedes the November 13, 2007 repurchase authorization, which also had authorized the repurchase of up to $150.0 million of our common shares. On November 5, 2013, our Board of Directors authorized the repurchase of up to $150.0 million of our common shares (“2013 Repurchase Authorization”). The 2013 Repurchase Authorization supersedes the 2011 Repurchase Authorization such that no further amounts could be repurchased under the 2011 Repurchase Authorization. As of December 31, 2013, availability under the 2013 Repurchase Authorization for future repurchases of our common shares was $143.6 million.

For the three months ended December 31, 2013, we repurchased 149,744 common shares on the open market for $6.4 million. For the twelve months ended December 31, 2013, we repurchased 526,583 common shares on the open market for $22.2 million. These shares are being held as treasury shares in accordance with the provisions of the Bermuda Companies Act 1981.

In 2013, we repurchased shares under Securities Exchange Act of 1934 Rule 10b5-1 trading plans as follows:

Date Trading	2013	Number of		Average Price of		Total Cost		Repurchase
Plan Initiated	Purchase Period	Shares Repurchased		Shares Repurchased		(in millions)		Authorization Year
12/14/2012	01/01/13-01/17/13(1)		171,480	$	35.41	$	6.0		2011
03/15/2013	03/16/13-05/01/13		205,452	$	40.75	$	8.3		2011
06/14/2013	06/18/13-07/31/13		195,217	$	43.47	$	8.5		2011

⁽¹⁾  The above table only reflects the 2013 activity under this Rule 10b5-1 trading plan. In 2012, 117,663 shares were repurchased under this Rule 10b5-1 trading plan for a total cost of $3.9 million with an average price of $33.38. Total shares repurchased in 2012 and 2013 under this Rule 10b5-1 trading plan were 289,143 shares at an average price of $34.58 for a total cost of $9.9 million.

At December 31, 2013, we had the following authorized, unissued common shares reserved for future issuance:

Reserve Name	Shares Reserved
2007 Long-Term Incentive Plan		3,945,354
2007 Employee Share Purchase Plan		1,432,683
Historical stock compensation plans		44,785
Total		5,422,822

Shares reserved under the historical plans represent all grants issued and outstanding under terminated plans as of December 31, 2013. (See Note 15, “Share-based Compensation” for further discussion.)

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Pension Benefits - Components of Net Periodic Benefit Cost (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Compensation And Retirement Disclosure [Abstract]
Interest cost	$ 0.8	$ 1.0	$ 1.0
Expected return on plan assets	(1.0)	(1.1)	(1.2)
Settlement charge	0	0	0.2
Amortization of actuarial loss	0.3	0.3	0.2
Net periodic benefit cost	$ 0.1	$ 0.2	$ 0.2

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Net Income (Loss) Per Common Share - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Earnings Per Share [Abstract]
Dilutive common shares			385,077
Treasury shares	7,558,345	6,459,613	4,971,305
Antidilutive securities excluded from computation of diluted net income per share, shares	3,300	550,632	1,920,151

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Shareholders' Equity - Schedule of Authorized and Unissued Common Shares Reserved (Detail)	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total Shares Reserved	5,422,822
2007 Long-Term Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total Shares Reserved	3,945,354
2007 Employee Share Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total Shares Reserved	1,432,683
Historical Stock Compensation Plans [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total Shares Reserved	44,785

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Run-Off Lines - Gross Reserves for Run-Off Lines (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total Asbestos and Environmental	$ 57.5	$ 64.6
Total Run-off Lines	332.5	358.3
Reinsurance Assumed [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total Asbestos and Environmental	45.2	52.2
Other [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total Asbestos and Environmental	12.3	12.4
Risk Management [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total Run-off Lines	264.3	272.6
Run-off reinsurance lines [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total Run-off Lines	5.8	14.4
Other Run-Off Lines [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total Run-off Lines	$ 4.9	$ 6.7

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Insurance Assessments - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Insurance [Abstract]
Insurance assessments on current insolvencies	$ 16.6	$ 16.4

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Schedule VI - Supplementary Information for Property-Casualty Insurance Companies (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Supplemental Information For Property Casualty Insurance Underwriters [Abstract]
Deferred acquisition costs	$ 113.9	$ 99.4	$ 101.5
Reserves for losses and loss adjustment expenses	3,230.30	3,223.50	3,291.10
Unamortized discount in reserves for losses	19.5	20.8	22.0
Unearned premiums	779.1	730.2	658.2
Premiums earned	1,303.80	1,186.50	1,082.00
Net investment income	100.0	118.8	125.8
Losses and loss adjustment expenses incurred: Current Year	775.6	780.5	866.5
Losses and loss adjustment expenses incurred: Prior Years	(33.6)	(32.9)	(3.4)
Losses and loss adjustment expenses incurred	742.0	747.6	863.1
(Deferral) amortization of policy acquisition costs	(15.8)	(4.5)	7.7
Paid losses and loss adjustment expenses, net of reinsurance	753.5	796.5	812.6
Gross premiums written	$ 1,888.40	$ 1,745.70	$ 1,544.80

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Segment Information - Identifiable Assets (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Identifiable Assets [Line Items]
Identifiable assets	$ 6,591.00	$ 6,688.90
Excess and Surplus Lines [Member]
Identifiable Assets [Line Items]
Identifiable assets	2,252.20	2,206.70
Commercial Specialty [Member]
Identifiable Assets [Line Items]
Identifiable assets	1,333.40	1,337.70
International Specialty [Member]
Identifiable Assets [Line Items]
Identifiable assets	743.60	731.80
Syndicate 1200 [Member]
Identifiable Assets [Line Items]
Identifiable assets	1,638.80	1,811.40
Run-Off Lines [Member]
Identifiable Assets [Line Items]
Identifiable assets	555.90	516.50
Corporate and Other [Member]
Identifiable Assets [Line Items]
Identifiable assets	$ 67.10	$ 84.80

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Document and Entity Information (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Feb. 21, 2014	Jun. 30, 2013
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2013
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	FY
Trading Symbol	AGII
Entity Registrant Name	Argo Group International Holdings, Ltd.
Entity Central Index Key	0001091748
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		26,507,046
Entity Public Float			$ 1,118.1

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Commitments and Contingencies - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013
Commitments And Contingencies Disclosure [Abstract]
Contractual commitments related to its limited partnership investments	$ 35.7

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Net Income (Loss) Per Common Share

12 Months Ended

Dec. 31, 2013

Earnings Per Share [Abstract]

Net Income (Loss) Per Common Share

11. Net Income (Loss) Per Common Share

The following table presents the calculation of net income (loss) per common share on a basic and diluted basis for the years ended December 31, 2013, 2012 and 2011:

(in millions, except number of shares and per share amounts)	2013		2012		2011
Net income (loss)	$	143.2	$	52.3	$	(81.9	)
Weighted average common shares outstanding—basic		26,851,341		28,095,210		29,887,249
Effect of dilutive securities:
Equity compensation awards		1,018,192		555,238		0
Weighted average common shares outstanding—diluted		27,869,533		28,650,448		29,887,249
Net income (loss) per common share—basic	$	5.33	$	1.86	$	(2.74	)
Net income (loss) per common share—diluted	$	5.14	$	1.83	$	(2.74	)

No adjustment was made in 2011 for any common stock equivalents because their effects would have been anti-dilutive. These potentially dilutive shares totaled 385,077.

Excluded from the weighted average common shares outstanding calculation at December 31, 2013, 2012 and 2011 are 7,558,345 shares, 6,459,613 shares and 4,971,305 shares, respectively, which are held as treasury shares. The shares are excluded as of their repurchase date. In 2013, equity compensation awards to purchase 3,300 shares of common stock were excluded from the computation of diluted net income per common share as these instruments were anti-dilutive. These instruments expire at varying times from 2014 through 2020. In 2012, equity compensation awards to purchase 550,632 shares of common stock were excluded from the computation of diluted net income per common share as these instruments were anti-dilutive. These instruments expire at varying times from 2013 through 2019. In 2011, equity compensation awards to purchase 1,920,151 shares of common stock were excluded from the computation of diluted net loss per common share because the net loss caused their effect to be anti-dilutive. These instruments expire at varying times from 2012 through 2018.

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Reserves for Losses and Loss Adjustment Expenses - Reinsurance Recoverables (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Liability For Claims And Claims Adjustment Expense [Abstract]
Net reserves beginning of the year	$ 2,110.9	$ 2,336.7	$ 2,253.0
Net reserves from assumed retroactive insurance contract	0	13.0	0
Losses and LAE incurred during current calendar year, net of reinsurance:
Current accident year	775.6	780.5	866.5
Prior accident years	(33.6)	(32.9)	(3.4)
Losses and LAE incurred during calendar year, net of reinsurance	742.0	747.6	863.1
Net reserves ceded-whole account quota share reinsurance transaction	0	192.2	0
Losses and LAE payments made during current calendar year, net of reinsurance:
Current accident year	199.3	217.7	234.7
Prior accident years	554.2	578.8	577.9
Losses and LAE payments made during current calendar year, net of reinsurance:	753.5	796.5	812.6
Change in participation interest	10.4	(3.1)	31.2
Foreign exchange adjustments	(2.2)	5.4	2.0
Net reserves-end of year	2,107.6	2,110.9	2,336.7
Reinsurance recoverables on unpaid losses and LAE, end of year	1,122.7	1,112.6	954.4
Gross reserves-end of year	$ 3,230.3	$ 3,223.5	$ 3,291.1

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Shareholders Equity - Schedule of Repurchase of Shares (Parenthetical) (Detail) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Schedule Of Share Repurchase Programs [Line Items]
Number of shares repurchased	1,098,732	1,488,308	1,607,745
Rule 10b5-1 [Member]
Schedule Of Share Repurchase Programs [Line Items]
Number of shares repurchased		117,663
Total Cost	$ 9.9	$ 3.9
Total Number of Shares Repurchased	289,143	289,143
Total Average Price of Shares Repurchased	$ 34.58	$ 33.38

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CONSOLIDATED STATEMENTS OF INCOME (LOSS) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Premiums and other revenue:
Earned premiums	$ 1,303.8	$ 1,186.5	$ 1,082.0
Net investment income	100.0	118.8	125.8
Fee (expense) income, net	(4.9)	5.3	1.4
Net realized investment and other gains	71.3	25.7	49.2
Total revenue	1,470.2	1,336.3	1,258.4
Expenses:
Losses and loss adjustment expenses	742.0	747.6	863.1
Other reinsurance-related expenses	19.2	27.3	5.9
Underwriting, acquisition and insurance expenses	510.8	464.5	425.7
Interest expense	20.2	23.7	22.1
Debt extinguishment costs	0	2.2	0
Foreign currency exchange (gain) loss	(1.7)	4.3	3.5
Total expenses	1,290.5	1,269.6	1,320.3
Income (loss) before income taxes	179.7	66.7	(61.9)
Provision for income taxes	36.5	14.4	20.0
Net (loss) income	143.2	52.3	(81.9)
Net income (loss) per common share:
Basic	$ 5.33	$ 1.86	$ (2.74)
Diluted	$ 5.14	$ 1.83	$ (2.74)
Dividend declared per common share	$ 0.59	$ 0.44	$ 0.44
Weighted average common shares:
Basic	26,851,341	28,095,210	29,887,249
Diluted	27,869,533	28,650,448	29,887,249
Net realized investment and other gains before other-than-temporary impairment losses	79.1	29.4	50.4
Other-than-temporary impairment losses recognized in earnings:
Other-than-temporary impairment losses on fixed maturities	(6.0)	(1.5)	(0.1)
Other-than-temporary impairment losses on equity securities	(1.8)	(2.2)	(1.1)
Non-credit portion of losses recognized in other comprehensive income	0	0	0
Impairment losses recognized in earnings	(7.8)	(3.7)	(1.2)
Net realized investment and other gains	$ 71.3	$ 25.7	$ 49.2

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Income Taxes

12 Months Ended

Dec. 31, 2013

Income Tax Disclosure [Abstract]

Income Taxes

4. Income Taxes

We are incorporated under the laws of Bermuda and, under current Bermuda law, are not obligated to pay any taxes in Bermuda based upon income or capital gains. We have received an undertaking from the Supervisor of Insurance in Bermuda pursuant to the provisions of the Exempted Undertakings Tax Protection Act, 2011, which exempts us from any Bermuda taxes computed on profits, income or any capital asset, gain or appreciation or any tax in the nature of estate duty or inheritance tax, at least until the year 2035.

We do not consider ourselves to be engaged in a trade or business in the United States or the United Kingdom and, accordingly, do not expect to be subject to direct United States or United Kingdom income taxation.

We have subsidiaries based in the United Kingdom that are subject to the tax laws of that country. Under current law, these subsidiaries are taxed at the applicable corporate tax rates. Six of the United Kingdom subsidiaries are deemed to be engaged in business in the United States, and therefore, are subject to United States corporate tax in respect of a proportion of their United States underwriting business only. Relief is available against the United Kingdom tax liabilities in respect of overseas taxes paid that arise from the underwriting business. Corporate income tax losses incurred in the United Kingdom can be carried forward, for application against future income, indefinitely. Our United Kingdom subsidiaries file separate United Kingdom income tax returns.

We have subsidiaries based in the United States that are subject to United States tax laws. Under current law, these subsidiaries are taxed at the applicable corporate tax rates. Our United States subsidiaries file a consolidated United States federal income tax return.

We also have operations in Belgium, Switzerland, Brazil, France, Malta, Spain and Ireland, which also are subject to income taxes imposed by the jurisdiction in which they operate. We have operations in the United Arab Emirates, which are not subject to income tax under the laws of that country.

Our income tax provision includes the following components for the years ended December 31:

(in millions)	2013		2012		2011
Current tax provision	$	32.7	$	9.4	$	9.8
Deferred tax provision related to:
Future tax deductions		0.1		2.9		9.4
Valuation allowance change		3.7		2.1		0.8
Income tax provision	$	36.5	$	14.4	$	20.0

Our expected income tax provision computed on pre-tax income (loss) at the weighted average tax rate has been calculated as the sum of the pre-tax income (loss) in each jurisdiction multiplied by that jurisdiction’s applicable statutory tax rate. For the years ended December 31, 2013, 2012 and 2011, pre-tax income (loss) attributable to our operations and the operations’ effective tax rates were as follows:

	2013						2012						2011
	Pre-Tax			Effective Tax			Pre-Tax			Effective Tax			Pre-Tax			Effective Tax
(in millions)	Income (Loss)			Rate			Income (Loss)			Rate			Income (Loss)			Rate
Bermuda	$	50.5			0.0	%	$	10.0			0.0	%	$	(129.8	)		0.0	%
United States		120.9			28.2	%		52.0			21.3	%		99.6			28.4	%
United Kingdom		18.5			12.0	%		14.0			24.4	%		(27.3	)		29.5	%
Belgium		0.2			103.0	%		(0.1	)		98.4	%		0.3			20.7	%
Brazil		(9.7	)		0.0	%		(6.5	)		0.0	%		(4.1	)		0.0	%
Dubai		1.1			0.0	%		0.0	(1)		0.0	%		0.1			0.0	%
Ireland		(0.1	)		0.0	%		(0.2	)		0.0	%		(0.3	)		0.0	%
Malta		(1.7	)		0.0	%		(2.6	)		0.0	%		(0.4	)		0.0	%
Switzerland		0.0	(1)		5.6	%		0.1			22.8	%		0.0	(1)		37.3	%
Pre-tax income (loss)	$	179.7					$	66.7					$	(61.9	)

⁽¹⁾  Pre-tax income for the respective year was less than $0.1 million.

A reconciliation of the difference between the provision for income taxes and the expected tax provision at the weighted average tax rate is as follows:

(in millions)	2013			2012			2011
Income tax provision at expected rate	$	43.1		$	18.5		$	26.0
Tax effect of:
Tax-exempt interest		(5.6	)		(5.6	)		(5.8	)
Dividends received deduction		(2.3	)		(2.2	)		(1.6	)
Valuation allowance change		3.7			2.1			0.8
Other permanent adjustments, net		0.3			1.8			0.3
Adjustment for prior year tax return		(1.6	)		0.2			1.6
United States state tax benefit		0.3			(0.3	)		(0.3	)
Other foreign adjustments		(0.1	)		0.0			0.1
Prior year foreign taxes		1.1			0.0			(0.6	)
Rate adjustment on loss carrybacks		0.0			0.0			(0.4	)
Deferred tax rate reduction		(1.2	)		(0.6	)		(0.4	)
Foreign exchange adjustments		(1.7	)		0.5			0.3
Foreign withholding taxes		0.5			0.0			0.0
Income tax provision	$	36.5		$	14.4		$	20.0
Income tax provision (benefit)—Foreign	$	2.4		$	3.3		$	(8.0	)
Income tax provision—United States Federal		33.2			11.5			28.5
Income tax (benefit) provision—United States State		0.4			(0.4	)		(0.5	)
Foreign withholding tax—United States		0.5			0.0			0.0
Income tax provision	$	36.5		$	14.4		$	20.0

The consolidated provision for income taxes for the year ended December 31, 2013 was affected by a $1.6 million decrease for additional taxes reported on the prior year tax return, a $1.2 million reduction for change in deferred tax rate and a $1.7 million decrease for the foreign exchange adjustment on the translation from Sterling to the U.S. Dollar within Argo International.

The consolidated provision for income taxes for the year ended December 31, 2012 was affected by a $0.2 million increase for additional taxes reported on the prior year tax return, $0.6 million reduction for the change in the United Kingdom deferred tax rate and $0.5 million increase for the foreign exchange adjustment on the translation from Sterling to the U.S. Dollar within Argo International.

The consolidated provision for income taxes for the year ended December 31, 2011 was affected by a $1.6 million increase for additional taxes reported on the prior year tax return, a $0.6 million reduction for prior year foreign taxes recovered and a $0.3 million increase for the foreign exchange adjustment on the translation from Sterling to the U.S. Dollar within Argo International.

We recognize potential accrued interest and penalties within our global operations in “Interest expense” and “Underwriting, acquisition and insurance expenses,” respectively, in our Consolidated Statements of Income (Loss).

Deferred taxes arise from temporary differences in the recognition of revenues and expenses for tax and financial reporting purposes. The net deferred tax liability as of December 31, 2013 and 2012 resulted from the tax-effected temporary differences shown in the following table. Due primarily to changes in unrealized gains on available-for-sale investment securities, the net deferred tax liability decreased by $15.1 million and increased by $25.3 million and $16.1 million for the years ended December 31, 2013, 2012 and 2011, respectively.

(in millions)	2013			2012
Deferred tax assets:
Unrealized losses on fixed maturities and other investment securities	$	0.0		$	0.4
Losses and loss adjustment expense reserve discounting		28.4			33.1
Unearned premiums		23.0			23.3
Capital loss carryforward		29.8			30.7
Allowance for bad debt		1.9			1.3
Accrual for contingent commissions		0.4			0.6
Net operating loss carryforward		19.8			19.8
Impairment of investment values		10.6			9.7
United States amortization of intangible assets		3.1			3.3
Accrued bonus		5.7			3.1
Accrued vacation		1.6			2.1
Stock option expense		6.4			4.4
United Kingdom interest		0.8			0.9
Brazil operating losses		8.0			3.9
Malta operating losses		1.7			1.0
Other		7.0			5.2
Deferred tax assets, gross		148.2			142.8
Deferred tax liabilities:
Unrealized gains on equity securities		(65.1	)		(51.2	)
Unrealized gains on fixed maturities and other investment securities		(16.1	)		(47.5	)
Deferred acquisition costs		(19.5	)		(19.1	)
United States amortization of intangible assets		(3.3	)		(3.2	)
United Kingdom underwriting losses		(4.8	)		(3.8	)
United Kingdom amortization of intangible assets		(2.8	)		(3.8	)
Brussels pension		(0.2	)		(0.2	)
United States state tax		0.0			(0.3	)
Other		(8.9	)		(5.0	)
Deferred tax liabilities, gross		(120.7	)		(134.1	)
Deferred tax assets, net before valuation allowance		27.5			8.7
Valuation allowance		(56.2	)		(52.5	)
Deferred tax liabilities, net	$	(28.7	)	$	(43.8	)
Net deferred tax liabilities—Foreign	$	(7.0	)	$	(7.0	)
Net deferred tax liabilities—United States		(21.7	)		(36.8	)
Deferred tax liabilities, net	$	(28.7	)	$	(43.8	)

Our net deferred tax assets (liabilities) are supported by taxes paid in previous periods, reversal of taxable temporary differences and recognition of future income. Management regularly evaluates the recoverability of the deferred tax assets and makes any necessary adjustments to them based upon any changes in management’s expectations of future taxable income. Realization of deferred tax assets is dependent upon our generation of sufficient taxable income in the future to recover tax benefits that cannot be recovered from taxes paid in the carryback period, which is generally two years for net operating losses and three years for capital losses for our United States operations. At December 31, 2013, we had a total net deferred tax asset of $27.5 million prior to any valuation allowance. Management has concluded that a valuation allowance is required for a portion of the tax effected net capital loss carryforward of $29.8 million generated from the sale of PXRE Reinsurance Company, and a full valuation allowance is required for the tax effected net operating loss carryforward of $18.8 million from PXRE Corporation and for the tax effected net operating loss carryforward of $1.0 million from ARIS. The capital loss carryforward generated from the sale of PXRE Reinsurance Company expired on December 31, 2013. Of the PXRE Corporation loss carryforwards, $17.2 million will expire if not used by December 31, 2025 and $1.5 million will expire if not used by December 31, 2027. Of the ARIS loss carryforward, $0.2 million will expire if not used by December 31, 2027, $0.4 million will expire if not used by December 31, 2028 and $0.4 million will expire if not used by December 31, 2029. The valuation allowances have been established as Internal Revenue Code Section 382 limits the application of net operating loss and net capital loss carryforwards following an ownership change. The loss carryforwards available per year are $2.8 million as required by Internal Revenue Code Section 382. Further, due to cumulative losses since inception, management has concluded that a valuation allowance is required for the full amount of the tax effected net operating losses generated by our Brazil and Malta entities. Accordingly, a valuation allowance of $56.2 million is required as of December 31, 2013 of which $46.5 million relates to the PXRE Reinsurance Company and ARIS loss carryforwards, $8.0 million relates to Brazil operations, and $1.7 million relates to Malta operations. During the year ended December 31, 2013, the valuation allowance was reduced by $1.0 million pertaining to the use of the PXRE Reinsurance Company and ARIS loss carryforwards, increased by $0.6 million pertaining to the Malta operations and increased by $4.1 million pertaining to the Brazil operations.

We had no material unrecognized tax benefits as of December 31, 2013, 2012 and 2011. Our United States subsidiaries are no longer subject to U.S. federal and state income tax examinations by tax authorities for years before 2010. Our United Kingdom subsidiaries are no longer subject to United Kingdom income tax examinations by Her Majesty’s Revenue and Customs for years before 2011.

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Reinsurance

12 Months Ended

Dec. 31, 2013

Insurance [Abstract]

Reinsurance

3. Reinsurance

We reinsure certain risks with other insurance companies. Such arrangements serve to limit our maximum loss on catastrophes and large or unusually hazardous risks. We are liable for reinsurance ceded in the event our reinsurers do not meet their obligations. Thus, a credit exposure exists with respect to reinsurance ceded to the extent that any reinsurer is unable or unwilling to meet the obligations assumed under the reinsurance contracts. Our allowance for uncollectible reinsurance balances receivable on paid losses and incurred claims was $3.7 million and $4.4 million as of December 31, 2013 and 2012, respectively. Under certain reinsurance agreements, collateral, including letters of credit, (“collateral”) is held to secure performance of reinsurers in meeting their obligations. The amount of such collateral was $335.5 million and $262.6 million at December 31, 2013 and 2012, respectively. The collateral we hold does not apply to our entire outstanding reinsurance recoverable. Rather, collateral is provided on an individual contract basis as appropriate. For each individual reinsurer, the collateral held may exceed or fall below the total outstanding recoverable from that individual reinsurer.

The long-term nature of the reinsurance contracts creates a credit risk to us over time arising from potentially uncollectible reinsurance. To mitigate that counterparty risk, we evaluate our reinsurers to assess their financial condition. The factors that underlie these reviews include a financial risk assessment as well as an internal assessment of the capitalization and the operational risk of the reinsurer. As a result of these reviews, we may make changes to the approved markets that are used in both our treaty and facultative reinsurance programs.

Estimated losses recoverable from reinsurers and the ceded portion of unearned premiums are reported as assets in our Consolidated Balance Sheets. Included in reinsurance recoverables are paid loss recoverables of $140.8 million and $208.3 million as of December 31, 2013 and 2012, respectively. Premiums earned and losses and loss adjustment expenses are reported net of reinsurance in our Consolidated Statements of Income (Loss).

Losses and loss adjustment expenses of $742.0 million, $747.6 million and $863.1 million for the years ended December 31, 2013, 2012 and 2011, respectively, are net of amounts ceded to reinsurers of $292.8 million, $223.6 million and $290.0 million, respectively.

We are required to accept certain assigned risks and other legally mandated reinsurance obligations. Prior to the mid-1980s, we assumed various forms of casualty reinsurance for which we continue to maintain reserves for losses and loss adjustment expenses (see Note 17, “Run-off Lines”). For such assumed reinsurance transactions, we engage in various monitoring steps that are common with assumed reinsurance such as ongoing claims reviews. We currently assume property related reinsurance primarily through our subsidiary, Argo Re (see Note 16, “Segment Information”).

Premiums for the years ended December 31 were as follows:

(in millions)	2013			2012			2011
Direct written premiums	$	1,576.1		$	1,428.6		$	1,261.3
Reinsurance ceded to other companies		(537.1	)		(501.2	)		(473.0	)
Reinsurance assumed from other companies		312.3			317.1			283.5
Net written premiums	$	1,351.3		$	1,244.5		$	1,071.8
Direct earned premiums	$	1,541.0		$	1,372.2		$	1,267.6
Reinsurance ceded to other companies		(533.7	)		(487.0	)		(457.5	)
Reinsurance assumed from other companies		296.5			301.3			271.9
Net earned premiums	$	1,303.8		$	1,186.5		$	1,082.0
Percentage of reinsurance assumed to net earned premiums		22.7	%		25.4	%		25.1	%

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Schedule II - Supplementary Insurance Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Supplementary Insurance Information [Line Items]
Deferred Acquisition Costs	$ 113.9	$ 99.4	$ 101.5
Reserves for Losses and Loss Adjustment Expenses	3,230.30	3,223.50	3,291.10
Unearned Premiums	779.1	730.2	658.2
Premium Revenue, net (premiums earned)	1,303.80	1,186.50	1,082.00
Net Investment Income	100.0	118.8	125.8
Benefits, Claims and Claim Adjustment Expenses	742.0	747.6	863.1
Amortization (Deferral) of Deferred Acquisition Costs	(15.8)	(4.5)	7.7
Other Insurance Expenses	526.6	469.0	418.0
Premiums Written, net	1,351.30	1,244.50	1,071.80
Excess and Surplus Lines [Member]
Supplementary Insurance Information [Line Items]
Deferred Acquisition Costs	38.8	37.3	34.9
Reserves for Losses and Loss Adjustment Expenses	1,171.80	1,209.00	1,271.80
Unearned Premiums	264.8	239.0	215.9
Premium Revenue, net (premiums earned)	460.20	399.30	405.30
Net Investment Income	42.2	51.1	56.0
Benefits, Claims and Claim Adjustment Expenses	244.0	223.3	247.1
Amortization (Deferral) of Deferred Acquisition Costs	(1.4)	(2.5)	2.6
Other Insurance Expenses	158.6	146.4	137.2
Premiums Written, net	478.70	420.80	390.00
Commercial Specialty [Member]
Supplementary Insurance Information [Line Items]
Deferred Acquisition Costs	18.1	18.6	22.1
Reserves for Losses and Loss Adjustment Expenses	653.40	660.00	622.80
Unearned Premiums	159.4	173.0	176.4
Premium Revenue, net (premiums earned)	299.00	317.50	316.70
Net Investment Income	22.8	27.6	27.7
Benefits, Claims and Claim Adjustment Expenses	194.0	257.0	236.4
Amortization (Deferral) of Deferred Acquisition Costs	0.4	3.4	(1.1)
Other Insurance Expenses	97.0	104.9	107.8
Premiums Written, net	288.20	306.40	317.20
International Specialty [Member]
Supplementary Insurance Information [Line Items]
Deferred Acquisition Costs	2.2	1.4	1.4
Reserves for Losses and Loss Adjustment Expenses	295.60	257.30	237.90
Unearned Premiums	117.1	102.5	79.3
Premium Revenue, net (premiums earned)	142.40	130.10	101.30
Net Investment Income	8.4	12.3	10.9
Benefits, Claims and Claim Adjustment Expenses	79.9	73.5	149.1
Amortization (Deferral) of Deferred Acquisition Costs	(1.0)	0.1	(0.4)
Other Insurance Expenses	51.1	43.7	31.2
Premiums Written, net	155.40	145.50	97.40
Syndicate 1200 [Member]
Supplementary Insurance Information [Line Items]
Deferred Acquisition Costs	54.8	42.1	43.1
Reserves for Losses and Loss Adjustment Expenses	777.00	738.90	755.30
Unearned Premiums	237.8	215.7	186.6
Premium Revenue, net (premiums earned)	401.70	337.90	259.30
Net Investment Income	11.0	15.3	17.2
Benefits, Claims and Claim Adjustment Expenses	208.6	184.0	222.6
Amortization (Deferral) of Deferred Acquisition Costs	(13.8)	(5.5)	6.6
Other Insurance Expenses	170.0	139.4	112.4
Premiums Written, net	428.50	370.20	266.80
Run-Off Lines [Member]
Supplementary Insurance Information [Line Items]
Deferred Acquisition Costs	0	0	0
Reserves for Losses and Loss Adjustment Expenses	332.50	358.30	403.30
Unearned Premiums	0	0	0
Premium Revenue, net (premiums earned)	0.50	1.70	(0.60)
Net Investment Income	10.8	12.5	13.3
Benefits, Claims and Claim Adjustment Expenses	15.5	9.8	7.9
Amortization (Deferral) of Deferred Acquisition Costs	0	0	0
Other Insurance Expenses	4.6	2.8	8.3
Premiums Written, net	0.50	1.60	0.40
Corporate and Other [Member]
Supplementary Insurance Information [Line Items]
Deferred Acquisition Costs	0	0	0
Reserves for Losses and Loss Adjustment Expenses	0	0	0
Unearned Premiums	0	0	0
Premium Revenue, net (premiums earned)	0	0	0
Net Investment Income	4.8	0	0.7
Benefits, Claims and Claim Adjustment Expenses	0	0	0
Amortization (Deferral) of Deferred Acquisition Costs	0	0	0
Other Insurance Expenses	45.3	31.8	21.1
Premiums Written, net	$ 0	$ 0	$ 0

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Segment Information

12 Months Ended

Dec. 31, 2013

Segment Reporting [Abstract]

Segment Information

16. Segment Information

We are primarily engaged in underwriting property and casualty insurance and reinsurance. We have four ongoing reporting segments: Excess and Surplus Lines, Commercial Specialty, International Specialty and Syndicate 1200. Additionally, we have a Run-off Lines segment for certain products that we no longer write.

We consider many factors, including the nature of each segment’s insurance and reinsurance products, production sources, distribution strategies and the regulatory environment, in determining how to aggregate reporting segments.

In evaluating the operating performance of our segments, we focus on core underwriting and investing results before the consideration of realized gains or losses from the sales of investments. Intersegment transactions are allocated to the segment that initiated the transaction. Realized investment and other gains are reported as a component of the Corporate and Other segment, as decisions regarding the acquisition and disposal of securities reside with the investment function and are not under the control of the individual business segments. Identifiable assets by segment are those assets used in the operation of each segment.

Revenue and income (loss) before income taxes for each segment for the years ended December 31 were as follows:

(in millions)	2013			2012		2011
Revenue:
Earned premiums
Excess and Surplus Lines	$	460.2		$	399.3	$	405.3
Commercial Specialty		299.0			317.5		316.7
International Specialty		142.4			130.1		101.3
Syndicate 1200		401.7			337.9		259.3
Run-off Lines		0.5			1.7		(0.6	)
Total earned premiums		1,303.8			1,186.5		1,082.0
Net investment income
Excess and Surplus Lines		42.2			51.1		56.0
Commercial Specialty		22.8			27.6		27.7
International Specialty		8.4			12.3		10.9
Syndicate 1200		11.0			15.3		17.2
Run-off Lines		10.8			12.5		13.3
Corporate and Other		4.8			0.0		0.7
Total net investment income		100.0			118.8		125.8
Fee (expense) income, net		(4.9	)		5.3		1.4
Net realized investment and other gains		71.3			25.7		49.2
Total revenue	$	1,470.2		$	1,336.3	$	1,258.4

(in millions)	2013			2012			2011
Income (loss) before income taxes
Excess and Surplus Lines	$	89.4		$	74.1		$	65.9
Commercial Specialty		21.4			(24.8	)		(3.6	)
International Specialty		11.3			11.3			(70.9	)
Syndicate 1200		37.3			28.1			(67.0	)
Run-off Lines		(10.6	)		(0.9	)		(5.3	)
Total segment income (loss) before taxes		148.8			87.8			(80.9	)
Corporate and Other		(40.4	)		(46.8	)		(30.2	)
Net realized investment and other gains		71.3			25.7			49.2
Total income (loss) before income taxes	$	179.7		$	66.7		$	(61.9	)

The table below presents earned premiums by geographic location for the years ended December 31. For this disclosure, we determine geographic location by the country of domicile of our subsidiaries that write the business and not by the location of insureds or reinsureds from whom the business was generated.

(in millions)	2013		2012		2011
Bermuda	$	101.7	$	120.4	$	101.5
Brazil		38.7		26.6		0.0
Malta		1.8		0.3		0.0
United Kingdom		401.7		320.8		259.3
United States		759.9		718.4		721.2
Total earned premiums	$	1,303.8	$	1,186.5	$	1,082.0

The following table represents identifiable assets as of December 31:

	December 31,
(in millions)	2013		2012
Excess and Surplus Lines	$	2,252.2	$	2,206.7
Commercial Specialty		1,333.4		1,337.7
International Specialty		743.6		731.8
Syndicate 1200		1,638.8		1,811.4
Run-off Lines		555.9		516.5
Corporate and Other		67.1		84.8
Total	$	6,591.0	$	6,688.9

Included in total assets at December 31, 2013 and 2012 are $386.8 million and $505.7 million, respectively, in assets associated with trade capital providers.

The following table represents goodwill and intangible assets, net of accumulated amortization as of December 31:

					Intangible Assets, Net of
	Goodwill				Accumulated Amortization
(in millions)	2013		2012		2013		2012
Excess and Surplus Lines	$	76.4	$	76.4	$	3.4	$	4.0
Commercial Specialty		48.7		48.7		9.0		10.4
Syndicate 1200		28.7		28.7		73.6		77.1
Total	$	153.8	$	153.8	$	86.0	$	91.5

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Accumulated Other Comprehensive Income (Loss)

12 Months Ended

Dec. 31, 2013

Text Block [Abstract]

Accumulated Other Comprehensive Income (Loss)

12. Accumulated Other Comprehensive Income (Loss)

In February 2013, the FASB issued Accounting Standards Update 2013-02 that amends ASC 220, “Comprehensive Income.” See Note 1, “Business and Significant Accounting Policies” for additional information regarding the provisions of this update. Effective January 1, 2013, we adopted the update prospectively.

A summary of changes in accumulated other comprehensive income (loss), net of taxes (where applicable) by component for the year ended December 31, 2013 is presented below:

(in millions)	Foreign Currency Translation Adjustments			Unrealized Holding Gains on Securities			Defined Benefit Pension Plans			Total
Beginning balance, January 1, 2013	$	(8.7	)	$	204.1		$	(5.9	)	$	189.5
Other comprehensive income (loss) before reclassifications		(2.8	)		0.2			1.3			(1.3	)
Amounts reclassified from accumulated other comprehensive income (loss)		0.0			(40.4	)		0.0			(40.4	)
Net current-period other comprehensive income (loss)		(2.8	)		(40.2	)		1.3			(41.7	)
Ending balance, December 31, 2013	$	(11.5	)	$	163.9		$	(4.6	)	$	147.8

The amounts reclassified from accumulated other comprehensive income (loss) shown in the above table have been included in the following captions in our Consolidated Statements of Income (Loss):

(in millions)	Year Ended December 31, 2013
Unrealized gains and losses on securities
Net realized investment gains	$	(59.8	)
Provision for income taxes		19.4
Net of taxes	$	(40.4	)

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Junior Subordinated Debentures - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2012	Nov. 13, 2012
Eight Point Eight Five Junior Subordinated Debt [Member]
Debt Instrument [Line Items]
Percentage of Notice of redemption to trustee	8.85%
Junior subordinated debentures, redeemable percentage	100.00%
Value of securities redeemed to trustee	$ 103,093,000
Percentage of debt securities redeemed as compare to principal amount	102.09%
Debt extinguishment costs	2,100,000
Redemption received on debt securities	3,100,000
Unamortized discount	400,000
Nine Point Seven Five Junior Subordinated Debt [Member]
Debt Instrument [Line Items]
Percentage of Notice of redemption to trustee		9.75%
Value of securities redeemed to trustee		15,464,000
Percentage of debt securities redeemed as compare to principal amount	100.975%
Debt extinguishment costs	100,000
Redemption received on debt securities	$ 500,000

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Junior Subordinated Debentures

12 Months Ended

Dec. 31, 2013

Junior Subordinated Debentures

7. Senior Unsecured Fixed Rate Notes

In September 2012, through our wholly owned subsidiary Argo Group US, we issued $143,750,000 aggregate principal amount of Argo Group US’s 6.5% Senior Notes due September 15, 2042 (the “Notes”). The Notes bear interest at 6.5%, payable quarterly in cash in arrears on the 15th day of March, June, September and December of each year, beginning on December 15, 2012. The Notes are unsecured and unsubordinated obligations of Argo Group US and rank equally in right of payment with all of Argo Group US’s other unsecured and unsubordinated debt. The Notes are guaranteed on a full and unconditional senior unsecured basis by Argo Group. The Notes may be redeemed, for cash, in whole or in part, on or after September 15, 2017, at Argo Group US’s option, at any time and from time to time, prior to maturity at a redemption price equal to 100% of the principal amount of the Notes to be redeemed, plus accrued but unpaid interest on the principal amount being redeemed to, but not including, the redemption date. The outstanding principal balance on the Notes was $143.8 million at December 31, 2013 and 2012.

The proceeds, net of issuance costs, from the sale of the Notes were $138.7 million and were used to repay $118.6 million of principal related to two of our trust preferred securities, with the remainder used for general corporate purposes.

Junior Subordinated Debentures [Member]

Junior Subordinated Debentures

8. Junior Subordinated Debentures

Through a series of trusts, that are wholly-owned subsidiaries (non-consolidated), we issued debt. The debentures are variable with the rate being reset quarterly and subject to certain interest rate ceilings. Interest payments are payable quarterly. The debentures are all unsecured and are subordinated to other indebtedness. All are redeemable subject to certain terms and conditions at a price equal to 100% of the principal plus accrued and unpaid interest.

On October 1, 2012, we gave notice of redemption to the trustee of our 8.85% PXRE Capital Trust I $103,093,000 Junior Subordinated Debt Securities (“Capital Trust I”). Capital Trust I was redeemed on November 13, 2012 at a redemption price equal to 102.090% of its principal amount, plus accrued and unpaid interest through the date of redemption. Additionally, on October 8, 2012, we gave notice of redemption to the trustee of our 9.75% PXRE Capital Trust III $15,464,000 Junior Subordinated Debt Securities (“Capital Trust III”). Capital Trust III was redeemed on November 23, 2012 at a redemption price equal to 100.975% of its principal amount, plus accrued and unpaid interest through the date of redemption. Interest on Capital Trust I and Capital Trust III ceased to accrue on and after the redemption dates. Subsequent to redemption, we received $3.1 million and $0.5 million for our ownership in Capital Trust I and Capital Trust III, respectively. Redemption of Capital Trust I and Capital Trust III resulted in a call premium of $2.1 million and $0.1 million, respectively, shown in “Debt extinguishment costs” in our Consolidated Statement of Income (Loss) for the year ended December 31, 2012. Capital Trust I had an unamortized discount of $0.4 million that was written off to “Interest expense” in our Consolidated Statement of Income (Loss) for the year ended December 31, 2012.

A summary of our outstanding junior subordinated debentures at December 31, 2013 and 2012 is presented below:

(in millions)
Issue Date	Trust Preferred Pools	Maturity		Redeemable		Rate Structure	Interest Rate at December 31, 2013			Amount
Argo Group
05/15/2003	PXRE Capital Statutory Trust II		05/15/2033		05/15/2008	3M LIBOR + 4.10%		4.34	%	$	18.1
10/29/2003	PXRE Capital Trust V		10/29/2033		10/29/2008	3M LIBOR + 3.85%		4.09	%		20.6
11/06/2003	PXRE Capital Trust VI		09/30/2033		09/30/2008	3M LIBOR + 3.90%		4.15	%		10.3
Argo Group US
05/15/2003	Argonaut Group Statutory Trust I		05/15/2033		05/15/2008	3M LIBOR + 4.10%		4.34	%		15.5
12/16/2003	Argonaut Group Statutory Trust III		01/08/2034		01/08/2009	3M LIBOR + 4.10%		4.34	%		12.3
04/29/2004	Argonaut Group Statutory Trust IV		04/29/2034		04/29/2009	3M LIBOR + 3.85%		4.09	%		13.4
05/26/2004	Argonaut Group Statutory Trust V		05/24/2034		05/24/2009	3M LIBOR + 3.85%		4.09	%		12.3
05/12/2004	Argonaut Group Statutory Trust VI		05/12/2034		06/01/2009	3M LIBOR + 3.80%		4.04	%		13.4
09/17/2004	Argonaut Group Statutory Trust VII		12/15/2034		09/17/2009	3M LIBOR + 3.60%		3.84	%		15.5
09/22/2004	Argonaut Group Statutory Trust VIII		09/22/2034		09/22/2009	3M LIBOR + 3.55%		3.80	%		15.5
10/22/2004	Argonaut Group Statutory Trust IX		12/15/2034		12/15/2009	3M LIBOR + 3.60%		3.84	%		15.5
09/15/2005	Argonaut Group Statutory Trust X		09/15/2035		09/15/2010	3M LIBOR + 3.40%		3.64	%		30.9
	Total Outstanding									$	193.3
(in millions)
Issue Date	Trust Preferred Pools	Maturity		Redeemable		Rate Structure	Interest Rate at December 31, 2012			Amount
Argo Group
05/15/2003	PXRE Capital Statutory Trust II		05/15/2033		05/15/2008	3M LIBOR + 4.10%		4.41	%	$	18.1
10/29/2003	PXRE Capital Trust V		10/29/2033		10/29/2008	3M LIBOR + 3.85%		4.16	%		20.6
11/06/2003	PXRE Capital Trust VI		09/30/2033		09/30/2008	3M LIBOR + 3.90%		4.21	%		10.3
Argo Group US
05/15/2003	Argonaut Group Statutory Trust I		05/15/2033		05/15/2008	3M LIBOR + 4.10%		4.41	%		15.5
12/16/2003	Argonaut Group Statutory Trust III		01/08/2034		01/08/2009	3M LIBOR + 4.10%		4.44	%		12.3
04/29/2004	Argonaut Group Statutory Trust IV		04/29/2034		04/29/2009	3M LIBOR + 3.85%		4.16	%		13.4
05/26/2004	Argonaut Group Statutory Trust V		05/24/2034		05/24/2009	3M LIBOR + 3.85%		4.16	%		12.3
05/12/2004	Argonaut Group Statutory Trust VI		05/12/2034		06/01/2009	3M LIBOR + 3.80%		4.11	%		13.4
09/17/2004	Argonaut Group Statutory Trust VII		12/15/2034		09/17/2009	3M LIBOR + 3.60%		3.91	%		15.5
09/22/2004	Argonaut Group Statutory Trust VIII		09/22/2034		09/22/2009	3M LIBOR + 3.55%		3.86	%		15.5
10/22/2004	Argonaut Group Statutory Trust IX		12/15/2034		12/15/2009	3M LIBOR + 3.60%		3.91	%		15.5
09/15/2005	Argonaut Group Statutory Trust X		09/15/2035		09/15/2010	3M LIBOR + 3.40%		3.71	%		30.9
	Total Outstanding									$	193.3

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Business and Significant Accounting Policies - Intangible Assets and Accumulated Amortization (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 113.4	$ 112.8
Accumulated Amortization	27.4	21.3
Lloyd's Capacity [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	60.5	60.5
Accumulated Amortization
Title Plant [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1.8	1.8
Accumulated Amortization
Distribution Network [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	44.8	44.2
Accumulated Amortization	23.1	18.0
Additional Lloyd's Capacity [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	4.8	4.8
Accumulated Amortization	3.2	2.3
Other [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1.5	1.5
Accumulated Amortization	$ 1.1	$ 1.0

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Share-based Compensation - Summary of Restricted Share Units Activity Under 2007 Plan (Detail) (Restricted Share Units [Member], USD $)	12 Months Ended
	Dec. 31, 2013
Restricted Share Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares, Outstanding at January 1, 2013	236,139
Granted, Shares	127,288
Vested and issued, Shares	(55,551)
Expired or forfeited, Shares	(49,901)
Shares, Outstanding at December 31, 2013	257,975
Weighted-Average Exercise Price, Outstanding at January 1, 2013	$ 30.09
Granted, Weighted-Average Grant Date Fair Value	$ 38.18
Vested and issued, Weighted-Average Grant Date Fair Value	$ 30.55
Expired or forfeited, Weighted-Average Grant Date Fair Value	$ 35.34
Weighted-Average Exercise Price, Outstanding at December 31, 2013	$ 32.97

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Reserves for Losses and Loss Adjustment Expenses

12 Months Ended

Dec. 31, 2013

Insurance [Abstract]

Reserves for Losses and Loss Adjustment Expenses

5. Reserves for Losses and Loss Adjustment Expenses

The following table provides a reconciliation of reserves for losses and loss adjustment expenses (“LAE”) for the years ended December 31, 2013, 2012 and 2011, respectively.

(in millions)	2013			2012			2011
Net reserves beginning of the year	$	2,110.9		$	2,336.7		$	2,253.0
Add:
Net reserves from assumed retroactive insurance contract (1)		0.0			13.0			0.0
Losses and LAE incurred during current calendar year, net of reinsurance:
Current accident year		775.6			780.5			866.5
Prior accident years		(33.6	)		(32.9	)		(3.4	)
Losses and LAE incurred during calendar year, net of reinsurance		742.0			747.6			863.1
Deduct:
Net reserves ceded—whole account quota share reinsurance transaction (2)		0.0			192.2			0.0
Losses and LAE payments made during current calendar year, net of reinsurance:
Current accident year		199.3			217.7			234.7
Prior accident years		554.2			578.8			577.9
Losses and LAE payments made during current calendar year, net of reinsurance:		753.5			796.5			812.6
Change in participation interest (3)		10.4			(3.1	)		31.2
Foreign exchange adjustments		(2.2	)		5.4			2.0
Net reserves—end of year		2,107.6			2,110.9			2,336.7
Add:
Reinsurance recoverables on unpaid losses and LAE, end of year		1,122.7			1,112.6			954.4
Gross reserves—end of year	$	3,230.3		$	3,223.5		$	3,291.1

⁽¹⁾  Amount represents reserves assumed resulting from participation in Brazilian Motor Third-Party Liability Insurance Pool effective January 1, 2012.

⁽²⁾  Amount represents reserves ceded resulting from a whole account quota share reinsurance transaction of 2009 and prior year of account reserves of the syndicate effective December 2012.

⁽³⁾  Amount represents (decrease) increase in reserves due to change in syndicate participation.

On December 31, 2012, Syndicate 1200 entered into a retroactive whole account quota share contract covering the 2009 and prior years of account. The counterparty was another syndicate within the Lloyd’s market. As a result of this transaction, reserves for losses and LAE at December 31, 2012 were net of $192.2 million ceded under this quota share agreement. On December 17, 2013 the Prudential Regulatory Authority approved a Split Reinsurance to Close arrangement whereby the liabilities assumed by the whole account quota share provider could be legally transferred to that quota share provider. On January 18, 2014 this transaction was effected with an inception date of January 1, 2014. Additionally, included in reinsurance recoverables on unpaid losses and LAE at December 31, 2012 was $60.1 million in recoverables due the trade capital providers as a result of this quota share agreement.

Reserves for losses and loss adjustment expenses represent the estimated indemnity cost and related adjustment expenses necessary to investigate and settle claims. Such estimates are based upon individual case estimates for reported claims, estimates from ceding companies for reinsurance assumed and actuarial estimates for losses that have been incurred but not yet reported to the insurer. Any change in probable ultimate liabilities is reflected in current operating results.

Net favorable loss development recognized in 2013 for prior accident years was a $33.6 million reduction to losses and LAE. The Excess and Surplus Lines segment had net favorable loss development of $43.9 million primarily due to $55.8 million of favorable development in the general and products liability lines of business, partially offset by $11.9 million of unfavorable development in commercial automobile losses. The Commercial Specialty segment had net unfavorable loss development of $1.1 million primarily attributable to $16.2 million of unfavorable development in general liability due to increases in claim severity and $2.0 million of unfavorable development in automobile liability, partially offset by favorable development of $9.5 million in workers compensation and $6.8 million of favorable development in short-tail lines. The International Specialty segment had net negligible prior year loss development. The Syndicate 1200 segment had net favorable loss development of $6.2 million primarily attributable to $12.8 million of favorable development in various property classes, partially offset by $6.3 million of unfavorable development in liability lines associated with municipality business. The Run-off Lines segment had net unfavorable development of $15.5 million primarily due to $10.5 million of unfavorable development in the asbestos liability driven by higher defense costs for claims from general liability policies written on a direct basis, as well as commutation and settlement activity, and $2.0 million of unfavorable development in the medical malpractice liability line due to the loss of the New York Liquidation Bureau funding for structured settlement annuity payments.

Net favorable loss development recognized in 2012 for prior accident years was a $32.9 million reduction to losses and LAE. The Excess and Surplus Lines segment had net favorable loss development of $48.0 million primarily driven by $39.2 million of favorable development in the general and products liability lines of business. The Commercial Specialty segment had net unfavorable loss development of $22.2 million primarily driven by $31.5 million of unfavorable development in general liability due to increases in claim severity, $5.5 million of unfavorable development in the automobile liability lines of business, partially offset by $10.1 million of favorable development in workers compensation. The International Specialty segment had net favorable loss development of $7.2 million primairly attributable to short-tail non-catastrophe losses. The Syndicate 1200 segment had net favorable loss development of $9.7 million primarily driven by favorable development in the property facultative, North American binder and Directors and Officers classes of business, partially offset by unfavorable development in the general liability property class of business. The Run-off Lines segment had net unfavorable development of $9.8 million primarily due to $9.1 million of unfavorable development in asbestos claims driven by increasing defense costs in the primary book and increasing settlement costs in the assumed book, partially offset by favorable development in workers compensation and run-off reinsurance claims.

Net favorable loss development recognized in 2011 for prior accident years was a $3.4 million reduction to losses and LAE. The Excess and Surplus Lines segment had net favorable loss development of $33.8 million primarily due to $30.2 million of favorable development in the general and products liability lines of business resulting from better than expected claim severity, and favorable development in the automobile liability, professional liability and property lines of business. The Commercial Specialty segment had net unfavorable loss development of $8.4 million primarily driven by $16.3 million of unfavorable development in general liability due to increases in claim severity, partially offset by $5.9 million of favorable development in workers compensation and $3.7 million of favorable development in an assumed Directors and Officers program. The International Specialty segment had net favorable loss development of $4.6 million primarily driven by $7.0 million of favorable development driven by short-tail non-catastrophe losses, partially offset by $2.5 million of unfavorable development in long-tail lines primarily due to the 2010 Deepwater Horizon incident. The Syndicate 1200 segment had net unfavorable loss development of $18.7 million primarily driven by a reduction in the estimate of future reinsurance recoveries of $14.5 million in the professional indemnity, Directors and Officers, general liability, property facultative and financial institutions classes of business and unfavorable development related to the medical malpractice and discontinued liability lines of business where the claims experience was worse than expected. The Run-off Lines segment had net unfavorable development of $7.9 million primarily due to $4.6 million of unfavorable development on run-off reinsurance claims primarily related to Hurricanes Katrina, Rita and Wilma and $11.7 million of unfavorable development in asbestos and environmental lines. The Run-off Lines unfavorable development was partially offset by the collection of a contribution settlement from another insurer for a California workers compensation indemnity claim and favorable development in other lines.

In the opinion of management, our reserves represent the best estimate of our ultimate liabilities, based on currently known facts, current law, current technology and assumptions considered reasonable where facts are not known. Due to the significant uncertainties and related management judgments, there can be no assurance that future loss development, favorable or unfavorable, will not occur.

Pension-type reserves (tabular reserves) are indemnity reserves that are calculated using discounts determined with reference to actuarial tables, which incorporate interest and contingencies such as mortality, remarriage, inflation or recovery from disability applied to a reasonably determinable payment stream. We discounted certain workers compensation pension-type reserves using a maximum interest rate of 3.5% in 2013, 2012 and 2011. The amount of unamortized discount was $19.5 million, $20.8 million and $22.0 million at December 31, 2013, 2012 and 2011, respectively.

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Derivative Instruments

12 Months Ended

Dec. 31, 2013

Derivative Instruments And Hedging Activities Disclosure [Abstract]

Derivative Instruments

6. Derivative Instruments

Through our subsidiary Argo Re, in 2011 we entered into two reinsurance contracts with a special purpose reinsurance company that provided us with protection against certain severe catastrophe events and the occurrence of multiple significant catastrophe events during the same year. The first contract was effective June 18, 2011 and provided coverage of $100 million for hurricanes and earthquakes in the U.S., windstorms in Europe and earthquakes in Japan based on the occurrence of second and subsequent events on a per-occurrence basis over an 18-month coverage period. Each event had an activation level, which, if attained, put the notes on risk for a subsequent event. Once the coverage had been activated, a second loss during the coverage period in excess of the loss trigger level resulted in a loss to the note holders. The first contract expired in December 2012. The second contract entered into on December 28, 2011 and effective January 1, 2012, provided coverage of $100 million for hurricanes and earthquakes (including fire) in the U.S. and covers losses for the first and subsequent events on a per-occurrence basis over a 24-month coverage period. Both of these transactions ignore the effects of inuring reinsurance, creating the remote possibility of a double recovery on covered events, and are therefore deemed to be derivatives.

We recorded these contracts at fair value, and such fair value is included in “Other assets” in our Consolidated Balance Sheets with any changes in the value reflected in “Other reinsurance-related expenses” in our Consolidated Statements of Income (Loss). As there is no quoted fair value available for these derivatives, the fair value was estimated by management taking into account changes in the market for catastrophe bond reinsurance contracts with similar economic characteristics and potential recoveries from events preceding the valuation date. Included in “Other reinsurance-related expenses” for the years ended December 31, 2013, 2012 and 2011 were $19.2 million, $27.3 million and $5.9 million, respectively. The expense in each respective period was due to the change in the fair value of the derivative(s), principally due to the passage of the transaction’s risk coverage term. Included in “Other assets” in our Consolidated Balance Sheets were $2.6 million and $6.9 million, which represent the fair value of these contracts at December 31, 2013 and 2012, respectively.

The special purpose reinsurance company that is the counterparty to this transaction is a variable interest entity under the provisions of ASC Topic 810-10, “Consolidation.” Argo Group is not the primary beneficiary of this entity and is therefore not required to consolidate it in our consolidated financial statements.

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Information Provided in Connection with Outstanding Debt of Subsidiaries - Condensed Consolidating Statement of (Loss) Income (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Premiums and other revenue:
Earned premiums									$ 1,303.8	$ 1,186.5	$ 1,082.0
Net investment income (expense)									100.0	118.8	125.8
Fee (expense) income, net									(4.9)	5.3	1.4
Net realized investment and other gains (losses)									71.3	25.7	49.2
Total revenue									1,470.2	1,336.3	1,258.4
Expenses:
Losses and loss adjustment expenses									742.0	747.6	863.1
Other reinsurance-related expenses									19.2	27.3	5.9
Underwriting, acquisition and insurance expenses									510.8	464.5	425.7
Interest expense									20.2	23.7	22.1
Foreign currency exchange loss (gain)									(1.7)	4.3	3.5
Total expenses									1,290.5	1,269.6	1,320.3
(Loss) income before income taxes	66.5	32.9	42.8	37.5	(4.1)	17.7	25.0	28.1	179.7	66.7	(61.9)
Provision (benefit) for income taxes									36.5	14.4	20.0
Net (loss) income before equity in earnings of subsidiaries									143.2	52.3	(81.9)
Equity in undistributed earnings of subsidiaries									0	0	0
Net (loss) income	47.8	31.0	31.7	32.7	(4.7)	13.4	24.0	19.6	143.2	52.3	(81.9)
Debt extinguishment costs									0	2.2	0
Argo Group International Holdings, Ltd (Parent Guarantor) [Member]
Premiums and other revenue:
Earned premiums									0	0	0
Net investment income (expense)									84.5	0.1	100.1
Fee (expense) income, net									0	0	0
Net realized investment and other gains (losses)									0	(0.8)	0
Total revenue									84.5	(0.7)	100.1
Expenses:
Losses and loss adjustment expenses									0	0	0
Other reinsurance-related expenses									0	0	0
Underwriting, acquisition and insurance expenses									27.4	27.1	22.6
Interest expense									3.3	3.9	5.4
Foreign currency exchange loss (gain)									0	0	0
Total expenses									30.7	31.1	28.0
(Loss) income before income taxes									53.8	(31.8)	72.1
Provision (benefit) for income taxes									0	0	0
Net (loss) income before equity in earnings of subsidiaries									53.8	(31.8)	72.1
Equity in undistributed earnings of subsidiaries									89.4	84.1	(154.0)
Net (loss) income									143.2	52.3	(81.9)
Debt extinguishment costs										0.1
Argo Group US, Inc. and Subsidiaries (Subsidiary Issuer) [Member]
Premiums and other revenue:
Earned premiums									439.9	434.2	440.7
Net investment income (expense)									73.4	86.6	88.9
Fee (expense) income, net									(4.1)	1.3	0.1
Net realized investment and other gains (losses)									72.2	19.5	36.9
Total revenue									581.4	541.6	566.6
Expenses:
Losses and loss adjustment expenses									268.6	300.6	290.0
Other reinsurance-related expenses									0	0	0
Underwriting, acquisition and insurance expenses									176.9	169.8	161.5
Interest expense									15.2	17.1	15.5
Foreign currency exchange loss (gain)									(0.3)	0	0
Total expenses									460.4	489.6	467.0
(Loss) income before income taxes									121.0	52.0	99.6
Provision (benefit) for income taxes									34.1	11.1	28.0
Net (loss) income before equity in earnings of subsidiaries									86.9	40.9	71.6
Equity in undistributed earnings of subsidiaries									0	0	0
Net (loss) income									86.9	40.9	71.6
Debt extinguishment costs										2.1
Other Subsidiaries and Eliminations [Member]
Premiums and other revenue:
Earned premiums									863.9	752.3	641.3
Net investment income (expense)									(57.9)	32.1	36.8
Fee (expense) income, net									(0.8)	4.0	1.3
Net realized investment and other gains (losses)									(0.9)	7.0	12.3
Total revenue									804.3	795.4	691.7
Expenses:
Losses and loss adjustment expenses									473.4	447.0	573.1
Other reinsurance-related expenses									19.2	27.3	5.9
Underwriting, acquisition and insurance expenses									306.5	267.6	241.6
Interest expense									2.9	3.0	1.2
Foreign currency exchange loss (gain)									(1.4)	4.3	3.5
Total expenses									800.6	749.2	825.3
(Loss) income before income taxes									3.7	46.2	(133.6)
Provision (benefit) for income taxes									2.4	3.3	(8.0)
Net (loss) income before equity in earnings of subsidiaries									1.3	42.9	(125.6)
Equity in undistributed earnings of subsidiaries									0	0	0
Net (loss) income									1.3	42.9	(125.6)
Debt extinguishment costs										0
Consolidating Adjustments [Member]
Premiums and other revenue:
Earned premiums									0	0	0
Net investment income (expense)									0	0	(100.0)
Fee (expense) income, net									0	0	0
Net realized investment and other gains (losses)									0	0	0
Total revenue									0	0	(100.0)
Expenses:
Losses and loss adjustment expenses									0	0	0
Other reinsurance-related expenses									0	0	0
Underwriting, acquisition and insurance expenses									0	0	0
Interest expense									(1.2)	(0.3)	0
Foreign currency exchange loss (gain)									0	0	0
Total expenses									(1.2)	(0.3)	0
(Loss) income before income taxes									1.2	0.3	(100.0)
Provision (benefit) for income taxes									0	0	0
Net (loss) income before equity in earnings of subsidiaries									1.2	0.3	(100.0)
Equity in undistributed earnings of subsidiaries									89.4	(84.1)	154.0
Net (loss) income									88.2	(83.8)	54.0
Debt extinguishment costs										$ 0

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Other Indebtedness

12 Months Ended

Dec. 31, 2013

Text Block [Abstract]

Other Indebtedness

9. Other Indebtedness

Floating Rate Loan Stock

This debt was assumed through the acquisition of Argo International. These notes are unsecured. All are redeemable subject to certain terms and conditions at a price up to 100% of the principal plus accrued and unpaid interest. Interest on the U.S. Dollar and Euro notes is due semiannually and quarterly, respectively. A summary of the notes outstanding at December 31, 2013 and 2012 is presented below:

(in millions)
Issue Date	Currency	Maturity		Redeemable		Rate Structure	Interest Rate at December 31, 2013	Amount
12/08/2004	U.S. Dollar		11/15/2034		12/08/2009	6 month LIBOR + 4.2%	4.60%	$	6.5
09/06/2005	Euro		08/22/2035		09/06/2010	3 month LIBOR + 4.0%	4.22%		16.3
10/31/2006	U.S. Dollar		01/15/2036		01/15/2011	6 month LIBOR + 4.0%	4.40%		10.0
10/31/2006	Euro		11/22/2036		10/31/2011	3 month LIBOR + 4.0%	4.22%		14.3
06/08/2007	Euro		09/15/2037		06/08/2012	3 month LIBOR + 3.9%	4.12%		18.4
								$	65.5
(in millions)
Issue Date	Currency	Maturity		Redeemable		Rate Structure	Interest Rate at December 31, 2012	Amount
12/08/2004	U.S. Dollar		11/15/2034		12/08/2009	6 month LIBOR + 4.2%	4.93%	$	6.5
09/06/2005	Euro		08/22/2035		09/06/2010	3 month LIBOR + 4.0%	4.19%		15.5
10/31/2006	U.S. Dollar		01/15/2036		01/15/2011	6 month LIBOR + 4.0%	4.73%		10.0
10/31/2006	Euro		11/22/2036		10/31/2011	3 month LIBOR + 4.0%	4.19%		13.6
06/08/2007	Euro		09/15/2037		06/08/2012	3 month LIBOR + 3.9%	4.08%		17.4
								$	63.0

At December 31, 2011, the floating rate loan stock was $64.7 million. No principal payments have been made since the acquisition of Argo International. The floating rate loan stock denominated in Euros fluctuates due to foreign currency translation. The outstanding balance on these loans was $49.0 million and $46.5 million as of December 31, 2013 and 2012, respectively. The foreign currency translation adjustment is recorded in our Consolidated Statements of Income (Loss).

Borrowing Under Revolving Credit Facility

On April 30, 2010, each of Argo Group, Argo Group US, Argo International Holdings, Ltd. and Argo International (the “Borrowers”) entered into a $150.0 million Credit Agreement (“Credit Agreement”) with a syndicate of commercial banks. On July 22, 2011, the Borrowers entered into Amendment No. 2 to the Credit Agreement, which increased the revolving credit facility under the Credit Agreement from $150.0 million to $170.0 million, extended the maturity date from April 30, 2013 to April 30, 2014 and modified certain other terms. Borrowings under the Credit Agreement may be used for general corporate purposes, including working capital and permitted acquisitions, and each of the Borrowers has agreed to be jointly and severally liable for the obligations of the other Borrowers under the Credit Agreement. At December 31, 2013 and 2012, we had no borrowings outstanding under the Credit Agreement.

The Credit Agreement contains customary events of default. If an event of default occurs and is continuing, the Borrowers could be required to repay all amounts outstanding under the Credit Agreement. Lenders holding more than 51% of the loans and commitments under the Credit Agreement may elect to accelerate the maturity of the loans under the Credit Agreement upon the occurrence and during the continuation of an event of default. No defaults or events of defaults have occurred as of this filing.

Included in the Credit Agreement is a provision that allows up to $15.0 million of the revolving credit facility to be used for letters of credit (“LOCs”), subject to availability under the line. At December 31, 2013 and 2012, we had $0.2 million and $0.8 million, respectively, in LOCs against the credit facility.

Other Debt

As part of the ARIS acquisition, at December 31, 2013 and 2012, we have a note payable for $0.8 million, of which $0.2 million is on a recourse basis. The note has a variable interest rate of 2.00% above 30-day LIBOR, with the variable interest rate being reset quarterly and subject to certain interest rate ceilings. The interest rate at December 31, 2012 was 2.21%. Interest payments are payable quarterly. The note payable matured pursuant to its terms on December 16, 2013, and while accrued interest has been paid as scheduled, the principal amount remained unpaid and outstanding as of year end. The parties have entered into negotiations to restructure this obligation on mutually acceptable terms in view of the fact that our investment in ARIS has yet to generate meaningful returns.

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Investments - Schedule of Amortized Cost and Fair Values of Fixed Maturity Investments, by Contractual Maturity (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013
Investments Debt And Equity Securities [Abstract]
Amortized Cost, Due in one year or less	$ 223.7
Amortized Cost, Due after one year through five years	1,245.7
Amortized Cost, Due after five years through ten years	549.1
Amortized Cost, Thereafter	216.5
Amortized Cost, Structured securities	525.1
Amortized Cost, Total	2,760.1
Fair Value, Due in one year or less	225.5
Fair Value, Due after one year through five years	1,268.7
Fair Value, Due after five years through ten years	570.3
Fair Value, Thereafter	214.2
Fair Value, Structured securities	535.7
Fair Value, Total	$ 2,814.4

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Segment Information - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting [Abstract]
Assets associated with trade capital providers	$ 386.8	$ 505.7

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Junior Subordinated Debentures - Schedule of Junior Subordinated Debentures (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Debt Instrument [Line Items]
Junior subordinated debentures, Maturity date	Dec. 16, 2013
Argo Group US [Member]
Debt Instrument [Line Items]
Junior subordinated debentures, Amount	$ 193.3	$ 193.3
PXRE Capital Statutory Trust II [Member] | Argo Group [Member]
Debt Instrument [Line Items]
Junior subordinated debentures, Issue date	May 15, 2003	May 15, 2003
Junior subordinated debentures, Maturity date	May 15, 2033	May 15, 2033
Junior subordinated debentures, Redeemable date	2008-05-15	2008-05-15
Junior subordinated debentures, Rate Structure	3M LIBOR + 4.10%	3M LIBOR + 4.10%
Junior subordinated debentures, Interest rate	4.34%	4.41%
Junior subordinated debentures, Amount	18.1	18.1
PXRE Capital Trust V [Member] | Argo Group [Member]
Debt Instrument [Line Items]
Junior subordinated debentures, Issue date	Oct. 29, 2003	Oct. 29, 2003
Junior subordinated debentures, Maturity date	Oct. 29, 2033	Oct. 29, 2033
Junior subordinated debentures, Redeemable date	2008-10-29	2008-10-29
Junior subordinated debentures, Rate Structure	3M LIBOR + 3.85%	3M LIBOR + 3.85%
Junior subordinated debentures, Interest rate	4.09%	4.16%
Junior subordinated debentures, Amount	20.6	20.6
PXRE Capital Trust VI [Member] | Argo Group [Member]
Debt Instrument [Line Items]
Junior subordinated debentures, Issue date	Nov. 06, 2003	Nov. 06, 2003
Junior subordinated debentures, Maturity date	Sep. 30, 2033	Sep. 30, 2033
Junior subordinated debentures, Redeemable date	2008-09-30	2008-09-30
Junior subordinated debentures, Rate Structure	3M LIBOR + 3.90%	3M LIBOR + 3.90%
Junior subordinated debentures, Interest rate	4.15%	4.21%
Junior subordinated debentures, Amount	10.3	10.3
Argonaut Group Statutory Trust I [Member] | Argo Group US [Member]
Debt Instrument [Line Items]
Junior subordinated debentures, Issue date	May 15, 2003	May 15, 2003
Junior subordinated debentures, Maturity date	May 15, 2033	May 15, 2033
Junior subordinated debentures, Redeemable date	2008-05-15	2008-05-15
Junior subordinated debentures, Rate Structure	3M LIBOR + 4.10%	3M LIBOR + 4.10%
Junior subordinated debentures, Interest rate	4.34%	4.41%
Junior subordinated debentures, Amount	15.5	15.5
Argonaut Group Statutory Trust III [Member] | Argo Group US [Member]
Debt Instrument [Line Items]
Junior subordinated debentures, Issue date	Dec. 16, 2003	Dec. 16, 2003
Junior subordinated debentures, Maturity date	Jan. 08, 2034	Jan. 08, 2034
Junior subordinated debentures, Redeemable date	2009-01-08	2009-01-08
Junior subordinated debentures, Rate Structure	3M LIBOR + 4.10%	3M LIBOR + 4.10%
Junior subordinated debentures, Interest rate	4.34%	4.44%
Junior subordinated debentures, Amount	12.3	12.3
Argonaut Group Statutory Trust IV [Member] | Argo Group US [Member]
Debt Instrument [Line Items]
Junior subordinated debentures, Issue date	Apr. 29, 2004	Apr. 29, 2004
Junior subordinated debentures, Maturity date	Apr. 29, 2034	Apr. 29, 2034
Junior subordinated debentures, Redeemable date	2009-04-29	2009-04-29
Junior subordinated debentures, Rate Structure	3M LIBOR + 3.85%	3M LIBOR + 3.85%
Junior subordinated debentures, Interest rate	4.09%	4.16%
Junior subordinated debentures, Amount	13.4	13.4
Argonaut Group Statutory Trust V [Member] | Argo Group US [Member]
Debt Instrument [Line Items]
Junior subordinated debentures, Issue date	May 26, 2004	May 26, 2004
Junior subordinated debentures, Maturity date	May 24, 2034	May 24, 2034
Junior subordinated debentures, Redeemable date	2009-05-24	2009-05-24
Junior subordinated debentures, Rate Structure	3M LIBOR + 3.85%	3M LIBOR + 3.85%
Junior subordinated debentures, Interest rate	4.09%	4.16%
Junior subordinated debentures, Amount	12.3	12.3
Argonaut Group Statutory Trust VI [Member] | Argo Group US [Member]
Debt Instrument [Line Items]
Junior subordinated debentures, Issue date	May 12, 2004	May 12, 2004
Junior subordinated debentures, Maturity date	May 12, 2034	May 12, 2034
Junior subordinated debentures, Redeemable date	2009-06-01	2009-06-01
Junior subordinated debentures, Rate Structure	3M LIBOR + 3.80%	3M LIBOR + 3.80%
Junior subordinated debentures, Interest rate	4.04%	4.11%
Junior subordinated debentures, Amount	13.4	13.4
Argonaut Group Statutory Trust VII [Member] | Argo Group US [Member]
Debt Instrument [Line Items]
Junior subordinated debentures, Issue date	Sep. 17, 2004	Sep. 17, 2004
Junior subordinated debentures, Maturity date	Dec. 15, 2034	Dec. 15, 2034
Junior subordinated debentures, Redeemable date	2009-09-17	2009-09-17
Junior subordinated debentures, Rate Structure	3M LIBOR + 3.60%	3M LIBOR + 3.60%
Junior subordinated debentures, Interest rate	3.84%	3.91%
Junior subordinated debentures, Amount	15.5	15.5
Argonaut Group Statutory Trust VIII [Member] | Argo Group US [Member]
Debt Instrument [Line Items]
Junior subordinated debentures, Issue date	Sep. 22, 2004	Sep. 22, 2004
Junior subordinated debentures, Maturity date	Sep. 22, 2034	Sep. 22, 2034
Junior subordinated debentures, Redeemable date	2009-09-22	2009-09-22
Junior subordinated debentures, Rate Structure	3M LIBOR + 3.55%	3M LIBOR + 3.55%
Junior subordinated debentures, Interest rate	3.80%	3.86%
Junior subordinated debentures, Amount	15.5	15.5
Argonaut Group Statutory Trust IX [Member] | Argo Group US [Member]
Debt Instrument [Line Items]
Junior subordinated debentures, Issue date	Oct. 22, 2004	Oct. 22, 2004
Junior subordinated debentures, Maturity date	Dec. 15, 2034	Dec. 15, 2034
Junior subordinated debentures, Redeemable date	2009-12-15	2009-12-15
Junior subordinated debentures, Rate Structure	3M LIBOR + 3.60%	3M LIBOR + 3.60%
Junior subordinated debentures, Interest rate	3.84%	3.91%
Junior subordinated debentures, Amount	15.5	15.5
Argonaut Group Statutory Trust X [Member] | Argo Group US [Member]
Debt Instrument [Line Items]
Junior subordinated debentures, Issue date	Sep. 15, 2005	Sep. 15, 2005
Junior subordinated debentures, Maturity date	Sep. 15, 2035	Sep. 15, 2035
Junior subordinated debentures, Redeemable date	2010-09-15	2010-09-15
Junior subordinated debentures, Rate Structure	3M LIBOR + 3.40%	3M LIBOR + 3.40%
Junior subordinated debentures, Interest rate	3.64%	3.71%
Junior subordinated debentures, Amount	$ 30.9	$ 30.9

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Investments - Schedule of Aging of Unrealized Losses on Company's Investments in Fixed Maturities, Equity Securities and Other Investments (Parenthetical) (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Investments Debt And Equity Securities [Abstract]
Unrealized losses less than one year	$ 0.1	$ 0.1
Unrealized losses one year or greater	$ 0.1	$ 0.1

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Pension Benefits - Schedule of Assumptions to Determine Net Periodic Benefit Cost (Detail)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Compensation And Retirement Disclosure [Abstract]
Weighted average discount rate	3.63%	4.50%	4.98%
Expected return on plan assets	6.00%	6.00%	6.00%
Expected rate of increase in future compensation levels

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Investments - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013 Security	Dec. 31, 2012	Dec. 31, 2011	Dec. 28, 2011	Jun. 18, 2011
Schedule of Investments [Line Items]
Fair value of investments, assets managed on behalf of the trade capital providers	$ 87.3	$ 143.9
Number of securities in an unrealized loss position, total	5,809
Number of securities in an unrealized loss position for less than one year	1,326
Number of securities in an unrealized loss position for a period of one year or greater	49
Other-than-temporarily losses on our fixed maturities portfolio	6.0	1.5	0.1
Other-than-temporarily losses equity portfolio	1.8	2.2	1.1
Forward contracts, term, days	60 days
Total notional amount of the Company's holdings in non-U.S. Dollar denominated higher yielding fixed maturity investments	0.1	2.3	3.1
Notional amount of the currency forward contracts				100.0	100.0
Fair value of put option	1.3	1.9	0.1
Realized gains from currency forward contracts	7.8	8.0	9.4
Realized losses from currency forward contracts	10.4	7.5	4.8
Amortized cost	3,836.0	3,895.7
Fair Value	4,079.2	4,200.7
Irrevocable letter of credit amount	0	(124.9)
Reported loss incurred		64.0
Reported loss expense reserve		124.9
Irrevocable Letter of Credit [Member]
Schedule of Investments [Line Items]
Irrevocable letter of credit amount	60.2
Securities Pledged As Collateral [Member]
Schedule of Investments [Line Items]
Pledged assets separately reported, securities pledged under letters of credit facilities, at amortized cost	97.7	218.5
Pledged assets separately reported, securities pledged under letters of credit facilities, at fair value	98.6	221.5
Deposit with Various U.S. Insurance and Other Regulatory Agencies [Member]
Schedule of Investments [Line Items]
Amortized cost	196.7	210.3
Fair Value	203.4	227.2
Non-U.S. Denominated Fixed Maturity Investments [Member]
Schedule of Investments [Line Items]
Total notional amount of the Company's holdings in non-U.S. Dollar denominated higher yielding fixed maturity investments	0.1	2.2	3.3
Currency forward contracts [Member]
Schedule of Investments [Line Items]
Notional amount of the currency forward contracts	$ 57.2	$ 102.8	$ 142.4

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Net Income (Loss) Per Common Share - Net Income (Loss) Per Common Share on Basic and Diluted Basis (Detail) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Earnings Per Share [Abstract]
Net income (loss)	$ 47.8	$ 31.0	$ 31.7	$ 32.7	$ (4.7)	$ 13.4	$ 24.0	$ 19.6	$ 143.2	$ 52.3	$ (81.9)
Weighted average common shares outstanding-basic									26,851,341	28,095,210	29,887,249
Effect of dilutive securities:
Equity compensation awards									1,018,192	555,238	0
Weighted average common shares outstanding-diluted									27,869,533	28,650,448	29,887,249
Net income (loss) per common share-basic	$ 1.80	$ 1.17	$ 1.18	$ 1.20	$ (0.17)	$ 0.48	$ 0.85	$ 0.68	$ 5.33	$ 1.86	$ (2.74)
Net income (loss) per common share-diluted	$ 1.74	$ 1.12	$ 1.13	$ 1.16	$ (0.17)	$ 0.47	$ 0.84	$ 0.67	$ 5.14	$ 1.83	$ (2.74)

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Statutory Accounting Principles - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended		1 Months Ended			12 Months Ended	1 Months Ended		12 Months Ended		1 Months Ended	12 Months Ended
	Dec. 31, 2013 Agro Re [Member]	Dec. 31, 2011 Agro Re [Member]	Dec. 31, 2013 Rockwood Casualty Insurance Company [Member]	Sep. 30, 2012 Rockwood Casualty Insurance Company [Member]	Jun. 30, 2011 Rockwood Casualty Insurance Company [Member]	Dec. 31, 2013 Rockwood Casualty Insurance Company [Member] Scenario Forecast [Member]	Dec. 31, 2013 Colony Insurance Company [Member]	Sep. 30, 2012 Colony Insurance Company [Member]	Dec. 31, 2011 Colony Insurance Company [Member]	Dec. 31, 2013 Colony Insurance Company [Member] Scenario Forecast [Member]	Dec. 31, 2013 Argonaut Insurance Company [Member]	Dec. 31, 2013 Argonaut Insurance Company [Member] Scenario Forecast [Member]	Dec. 31, 2013 Minimum [Member]	Dec. 31, 2012 Minimum [Member]
Statutory Accounting Practices [Line Items]
Minimum statutory capital and surplus balance													$ 343.9	$ 312.5
Maximum permissible limit for dividend	25.00%
Reduction in total statutory capital	15.00%
Maximum permitted amount of dividends	304.5					18.1				41.5		24.8
Cash dividends	84.5	100.0
Dividend received from subsidiary			9.5	10.0	30.0		0.3		48.1		0.1
Value of ordinary dividends											$ 24.8
Received a dividend, securities							75.9	59.0	51.3		24.7
Value of extraordinary dividends							$ 76.2		$ 99.4

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Schedule III Supplementary Insurance Information

12 Months Ended

Dec. 31, 2013

Supplementary Insurance Information [Abstract]

Schedule III Supplementary Insurance Information

ARGO GROUP INTERNATIONAL HOLDINGS, LTD.

SCHEDULE III

SUPPLEMENTARY INSURANCE INFORMATION

FOR THE YEARS ENDED DECEMBER 31, 2013, 2012 and 2011

(in millions)

	DAC		Reserves for Losses and Loss Adjustment Expenses		UPR		Premium Revenue			Net Invest. Income		Loss & LAE		Amortization (Deferral) DAC			Other Operating Exp		Premiums Written
Segment	(a)		(b)		(c)		(d)			(e) (l)		(f)		(g) (2)			(h)(3)		(i)
Year Ended December 31, 2013
Excess and Surplus Lines	$	38.8	$	1,171.8	$	264.8	$	460.2		$	42.2	$	244.0	$	(1.4	)	$	158.6	$	478.7
Commercial Specialty		18.1		653.4		159.4		299.0			22.8		194.0		0.4			97.0		288.2
International Specialty		2.2		295.6		117.1		142.4			8.4		79.9		(1.0	)		51.1		155.4
Syndicate 1200		54.8		777.0		237.8		401.7			11.0		208.6		(13.8	)		170.0		428.5
Run-off Lines		0.0		332.5		0.0		0.5			10.8		15.5		0.0			4.6		0.5
Corporate and Other		0.0		0.0		0.0		0.0			4.8		0.0		0.0			45.3		0.0
	$	113.9	$	3,230.3	$	779.1	$	1,303.8		$	100.0	$	742.0	$	(15.8	)	$	526.6	$	1,351.3
Year Ended December 31, 2012
Excess and Surplus Lines	$	37.3	$	1,209.0	$	239.0	$	399.3		$	51.1	$	223.3	$	(2.5	)	$	146.4	$	420.8
Commercial Specialty		18.6		660.0		173.0		317.5			27.6		257.0		3.4			104.9		306.4
International Specialty		1.4		257.3		102.5		130.1			12.3		73.5		0.1			43.7		145.5
Syndicate 1200		42.1		738.9		215.7		337.9			15.3		184.0		(5.5	)		139.4		370.2
Run-off Lines		0.0		358.3		0.0		1.7			12.5		9.8		0.0			2.8		1.6
Corporate and Other		0.0		0.0		0.0		0.0			0.0		0.0		0.0			31.8		0.0
	$	99.4	$	3,223.5	$	730.2	$	1,186.5		$	118.8	$	747.6	$	(4.5	)	$	469.0	$	1,244.5
Year Ended December 31, 2011
Excess and Surplus Lines	$	34.9	$	1,271.8	$	215.9	$	405.3		$	56.0	$	247.1	$	2.6		$	137.2	$	390.0
Commercial Specialty		22.1		622.8		176.4		316.7			27.7		236.4		(1.1	)		107.8		317.2
International Specialty		1.4		237.9		79.3		101.3			10.9		149.1		(0.4	)		31.2		97.4
Syndicate 1200		43.1		755.3		186.6		259.3			17.2		222.6		6.6			112.4		266.8
Run-off Lines		0.0		403.3		0.0		(0.6	)		13.3		7.9		0.0			8.3		0.4
Corporate and Other		0.0		0.0		0.0		0.0			0.7		0.0		0.0			21.1		0.0
	$	101.5	$	3,291.1	$	658.2	$	1,082.0		$	125.8	$	863.1	$	7.7		$	418.0	$	1,071.8

^(a)  Deferred Policy Acquisition Cost

^(b)  Future Policy Benefits, Losses, Claims and Loss Expenses

^(c)  Unearned Premiums

^(d)  Premium Revenue, net (premiums earned)

^(e) Net Investment Income

^(f)  Benefits, Claims, Losses and Settlement Expenses

^(g) Amortization (Deferral) of Deferred Policy Acquisition Costs

^(h) Other Operating Expenses

⁽ⁱ⁾ Premiums Written, net

⁽¹⁾ Net Investment Income allocated based upon each segment’s share of investable funds.

⁽²⁾ The amortization (deferral) of DAC will not equal the change in the balance sheet. See Note 1, “Business and Significant Accounting Policies” for further discussion.

⁽³⁾ Other Insurance Expenses allocated based on specific identification, where possible, and related activities.

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Schedule II - Schedule of Statements of Cash Flows (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Condensed Financial Statements, Captions [Line Items]
Net income (loss)	$ 143.2	$ 52.3	$ (81.9)
Amortization and depreciation	39.6	36.6	30.8
Share-based payments expense	23.3	10.5	4.6
Debt extinguishment costs	0	(2.2)	0
Accrued underwriting expenses	(4.0)	21.0	(5.8)
Other assets and liabilities, net	(21.8)	(10.7)	(18.7)
Cash (used) provided by operating activities	(0.2)	30.5	(17.7)
Change in short-term investments	(145.3)	58.7	77.6
Purchases of fixed assets	(26.1)	(34.1)	(16.5)
Cash (used) provided by investing activities	120.8	(3.7)	102.1
Activity under stock incentive plans	2.6	1.2	1.1
Redemption of trust preferred securities, net	0	117.2	0
Payment of cash dividend to common shareholders	(15.8)	(12.3)	(13.1)
Cash used by financing activities	(59.5)	(33.8)	(61.6)
Change in cash	61.6	(6.9)	19.2
Cash, beginning of year	95.8	102.7	83.5
Cash, end of year	157.4	95.8	102.7
Registrant [Member]
Condensed Financial Statements, Captions [Line Items]
Net income (loss)	143.2	52.3	(81.9)
Amortization and depreciation	0.7	0.9	0.8
Share-based payments expense	8.7	4.8	2.6
Debt extinguishment costs	0	0.1	0
Undistributed (earnings) losses of subsidiaries	(89.4)	(84.1)	154.0
Prepaid assets	(0.1)	0.9	(0.8)
Accrued underwriting expenses	(0.9)	0.9	(1.6)
Due to subsidiaries	0.2	(7.0)	(3.2)
Interest on intercompany note payable	0.8	0.3	1.7
Other assets and liabilities, net	0	0.7	0
Cash (used) provided by operating activities	63.2	(30.2)	71.6
Change in short-term investments	(1.4)	(0.9)	0
Settlements of foreign currency exchange forward contracts	0.7	2.3	1.3
Purchases of fixed assets	0	0	(0.3)
Cash (used) provided by investing activities	(0.7)	1.4	1.0
Borrowings under intercompany note payable, net	(49.3)	55.0	(60.6)
Activity under stock incentive plans	2.6	1.2	1.1
Redemption of trust preferred securities, net	0	(15.1)	0
Payment of cash dividend to common shareholders	(15.8)	(12.3)	(13.1)
Cash used by financing activities	(62.5)	28.8	(72.6)
Change in cash	0	0	0
Cash, beginning of year	0	0	0
Cash, end of year	$ 0	$ 0	$ 0

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Segment Information (Tables)

12 Months Ended

Dec. 31, 2013

Segment Reporting [Abstract]

Revenue and (Loss) Income Before Income Taxes for Each Segment

Revenue and income (loss) before income taxes for each segment for the years ended December 31 were as follows:

(in millions)	2013			2012		2011
Revenue:
Earned premiums
Excess and Surplus Lines	$	460.2		$	399.3	$	405.3
Commercial Specialty		299.0			317.5		316.7
International Specialty		142.4			130.1		101.3
Syndicate 1200		401.7			337.9		259.3
Run-off Lines		0.5			1.7		(0.6	)
Total earned premiums		1,303.8			1,186.5		1,082.0
Net investment income
Excess and Surplus Lines		42.2			51.1		56.0
Commercial Specialty		22.8			27.6		27.7
International Specialty		8.4			12.3		10.9
Syndicate 1200		11.0			15.3		17.2
Run-off Lines		10.8			12.5		13.3
Corporate and Other		4.8			0.0		0.7
Total net investment income		100.0			118.8		125.8
Fee (expense) income, net		(4.9	)		5.3		1.4
Net realized investment and other gains		71.3			25.7		49.2
Total revenue	$	1,470.2		$	1,336.3	$	1,258.4

(in millions)	2013			2012			2011
Income (loss) before income taxes
Excess and Surplus Lines	$	89.4		$	74.1		$	65.9
Commercial Specialty		21.4			(24.8	)		(3.6	)
International Specialty		11.3			11.3			(70.9	)
Syndicate 1200		37.3			28.1			(67.0	)
Run-off Lines		(10.6	)		(0.9	)		(5.3	)
Total segment income (loss) before taxes		148.8			87.8			(80.9	)
Corporate and Other		(40.4	)		(46.8	)		(30.2	)
Net realized investment and other gains		71.3			25.7			49.2
Total income (loss) before income taxes	$	179.7		$	66.7		$	(61.9	)

Schedule of Earned Premiums by Geographic Location

The table below presents earned premiums by geographic location for the years ended December 31. For this disclosure, we determine geographic location by the country of domicile of our subsidiaries that write the business and not by the location of insureds or reinsureds from whom the business was generated.

(in millions)	2013		2012		2011
Bermuda	$	101.7	$	120.4	$	101.5
Brazil		38.7		26.6		0.0
Malta		1.8		0.3		0.0
United Kingdom		401.7		320.8		259.3
United States		759.9		718.4		721.2
Total earned premiums	$	1,303.8	$	1,186.5	$	1,082.0

Identifiable Assets

The following table represents identifiable assets as of December 31:

	December 31,
(in millions)	2013		2012
Excess and Surplus Lines	$	2,252.2	$	2,206.7
Commercial Specialty		1,333.4		1,337.7
International Specialty		743.6		731.8
Syndicate 1200		1,638.8		1,811.4
Run-off Lines		555.9		516.5
Corporate and Other		67.1		84.8
Total	$	6,591.0	$	6,688.9

Schedule of Goodwill and Intangible Assets Net of Accumulated Amortization

The following table represents goodwill and intangible assets, net of accumulated amortization as of December 31:

					Intangible Assets, Net of
	Goodwill				Accumulated Amortization
(in millions)	2013		2012		2013		2012
Excess and Surplus Lines	$	76.4	$	76.4	$	3.4	$	4.0
Commercial Specialty		48.7		48.7		9.0		10.4
Syndicate 1200		28.7		28.7		73.6		77.1
Total	$	153.8	$	153.8	$	86.0	$	91.5

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Pension Benefits

12 Months Ended

Dec. 31, 2013

Compensation And Retirement Disclosure [Abstract]

Pension Benefits

14. Pension Benefits

Argo Group US sponsors a qualified defined benefit plan and non-qualified unfunded supplemental defined benefit plans, all of which were curtailed effective February 2004. The following tables set forth the change in plan assets and the change in projected benefit obligation, as of December 31 with respect to these plans. The assets and liabilities of the plans were measured as of December 31 of the respective years presented.

(in millions)	2013			2012
Change in plan assets
Fair value of plan assets at beginning of year	$	20.1		$	19.7
Actual return on plan assets		1.9			2.0
Employer contributions		0.2			0.2
Settlements and benefits paid		(2.0	)		(1.8	)
Fair value of plan assets at end of year	$	20.2		$	20.1
(in millions)	2013			2012
Change in projected benefit obligation
Projected benefit obligation at beginning of year	$	24.6		$	22.7
Interest cost		0.8			1.0
Actuarial (gain) loss		(0.8	)		2.7
Benefits paid		(2.0	)		(1.8	)
Projected benefit obligation at end of year	$	22.6		$	24.6

As of December 31, 2013 and 2012, the qualified pension plan was underfunded by $0.3 million and $2.2 million, respectively, and the non-qualified pension plans were unfunded by $2.2 million and $2.3 million, respectively. Underfunded and unfunded amounts are included in “Other liabilities” in our Consolidated Balance Sheets.

Assumptions used to determine benefit obligations at December 31 were as follows:

	2013			2012
Weighted average discount rate		4.42	%		3.63	%
Expected rate of increase in future compensation levels		n/a			n/a

Assumptions used to determine net periodic benefit cost for the years ended December 31:

	2013			2012			2011
Weighted average discount rate		3.63	%		4.50	%		4.98	%
Expected return on plan assets		6.00	%		6.00	%		6.00	%
Expected rate of increase in future compensation levels		n/a			n/a			n/a

In 2013, 2012 and 2011, the expected return on plan assets was ascertained using multiple factors that include market conditions, duration of the fixed maturity portion of the portfolio and long-term return forecasts provided by several asset management companies.

Components of net periodic benefit cost for the years ended December 31 were as follows:

(in millions)	2013			2012			2011
Interest cost	$	0.8		$	1.0		$	1.0
Expected return on plan assets		(1.0	)		(1.1	)		(1.2	)
Settlement charge		0.0			0.0			0.2
Amortization of actuarial loss		0.3			0.3			0.2
Net periodic benefit cost	$	0.1		$	0.2		$	0.2

We estimate that $0.3 million of unrecognized actuarial loss will be amortized from accumulated other comprehensive gain into net periodic benefit cost during 2014.

The projected benefit obligation for the non-qualified unfunded supplemental defined benefit plans, with accumulated benefit obligations in excess of plan assets, was $2.2 million and $2.3 million as of December 31, 2013 and 2012, respectively. The fair value of plan assets for these plans was zero for these same periods. The accumulated benefit obligation for all defined benefit plans is equal to the projected benefit obligation for each of the years presented.

Our investment policy for the qualified plan requires the investments be prudently selected and properly diversified so as to minimize the risk of large losses in accordance with applicable laws including the Employee Retirement Income Security Act of 1974. The overall investment strategy is to achieve a balance of long-term growth of capital and current income, taking into account the need for liquidity to pay benefits as they come due. Periodic shifts in the asset allocation may be made based on the assessment of current and prospective market conditions.

The investment policy for the qualified plan contains asset allocation guidelines with target allocations that remain effective until such time as the investment policy is revised. At December 31, 2013, the target allocations were 65% fixed maturity investments, highly liquid fixed maturity investments, and cash; and 35% equity investments. The target asset allocation percentages were selected based on risk diversification needs, expected distribution patterns and asset manager recommendations. The actual asset allocation as of December 31, 2013 was 67.4% fixed maturity investments, highly liquid fixed maturity investments and cash; and 32.6% equity investments, of which 25.4% and 7.2% were allocated between U.S. and international equities, respectively. These allocations were in compliance with the investment policy that allows the investment manager based on its judgment and market conditions to deviate from the target allocations.

Following is a description of the valuation techniques used to measure the plan’s assets at fair value.

Mutual funds: Fair value is determined using observable, market-based inputs on the valuation date.

Common collective trust and money market mutual fund: We determine fair value based on the net asset values provided by the plan trustee recalculated daily.

The methods described above may produce a fair value calculation that may not be indicative of net realizable value or reflective of future fair values. Furthermore, while it is believed the valuation methods are appropriate and consistent with other market participants, the use of different methodologies or assumptions to determine the fair value of certain financial instruments could result in a different fair value measurement at the reporting date.

The fair values of the plan assets at December 31, 2013 and 2012 by asset category are as follows:

			Fair Value Measurements
			at Reporting Date Using
(in millions)	December 31, 2013		Level 1 (a)		Level 2 (b)		Level 3 (c)
Equity Securities:
Mutual Funds:
Large cap U.S. equity	$	3.2	$	3.2	$	0.0	$	0.0
Small-mid cap U.S. equity		1.4		1.4		0.0		0.0
International equity		1.5		1.5		0.0		0.0
Real estate		0.5		0.5		0.0		0.0
Convertible bonds and equities		0.2		0.2		0.0		0.0
U.S. and global government and corporate fixed maturity		12.9		12.9		0.0		0.0
Cash and short-term investments:
Short-term investment fund (1)		0.5		0.0		0.5		0.0
Total	$	20.2	$	19.7	$	0.5	$	0.0

^(a)  Quoted prices in active markets for identical assets

^(b)  Significant other observable inputs

^(c)  Significant unobservable inputs

⁽¹⁾  Assets invested in one common collective trust composed of high-grade money market money instruments with short maturities.

			Fair Value Measurements
			at Reporting Date Using
(in millions)	December 31, 2012		Level 1 (a)		Level 2 (b)		Level 3 (c)
Equity Securities:
Mutual Funds:
Large cap U.S. equity	$	2.6	$	2.6	$	0.0	$	0.0
Small-mid cap U.S. equity		1.0		1.0		0.0		0.0
International equity		1.3		1.3		0.0		0.0
Real estate		0.5		0.5		0.0		0.0
Convertible bonds and equities		0.1		0.1		0.0		0.0
U.S. and global government and corporate fixed maturity		13.9		13.9		0.0		0.0
Cash and short-term investments:
Short-term investment fund (1)		0.7		0.0		0.7		0.0
Total	$	20.1	$	19.4	$	0.7	$	0.0

^(a)  Quoted prices in active markets for identical assets

^(b)  Significant other observable inputs

^(c)  Significant unobservable inputs

⁽¹⁾  Assets invested in one common collective trust composed of high-grade money market money instruments with short maturities.

Based on the current funding status of the pension plan, effects of the curtailment and expected changes in pension plan asset values and pension obligations, we do not believe any significant funding of the pension plan will be required during the year ending December 31, 2014.

We expect to make the following benefit payments:

	Pension
(in millions)	Benefits
2014	$	1.7
2015		1.8
2016		1.6
2017		1.9
2018		1.6
Years 2019 to 2023		7.6
Total	$	16.2

Substantially all of our employees are either eligible or mandated by applicable laws to participate in employee savings plans. Under these plans, a percentage of the employee’s pay may be or is mandated based on applicable laws to be contributed to various savings alternatives. The plans also call for Company contributions under several formulae. Charges to income related to our contributions were $6.8 million in 2013, $6.3 million in 2012 and $5.6 million in 2011.

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Share-Based Compensation - Amended and Restated Stock Incentive Plan - Additional Information (Detail) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Schedule Of Share Repurchase Programs [Line Items]
Share-based compensation arrangement by share-based payment award, number of shares authorized	5,422,822
Minimum [Member]
Schedule Of Share Repurchase Programs [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting period, years	1 year
Maximum [Member]
Schedule Of Share Repurchase Programs [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting period, years	4 years
Amended Plan [Member]
Schedule Of Share Repurchase Programs [Line Items]
Share-based compensation arrangement by share-based payment award, number of shares authorized	6,250,000
Share based compensation arrangement by share based payment award options exercises, intrinsic value	$ 0.8	$ 0.2	$ 0.1
Employee service share-based compensation, cash received from exercise of stock options		$ 3.5
Amended Plan [Member] | Minimum [Member]
Schedule Of Share Repurchase Programs [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting period, years	7 years
Amended Plan [Member] | Maximum [Member]
Schedule Of Share Repurchase Programs [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting period, years	11 years

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Leases

12 Months Ended

Dec. 31, 2013

Leases [Abstract]

Leases

19. Leases

We lease office space and equipment under lease agreements that expire at various intervals and are subject to renewal options at market rates prevailing at the time of renewal. At December 31, 2013, the future minimum payments under non-cancelable operating leases are as follows:

(in millions)	Amount Due
2014	$	11.1
2015		10.8
2016		8.5
2017		7.5
2018		5.9
Thereafter		13.8
Total	$	57.6

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Accumulated Other Comprehensive Income (Loss) - Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Unrealized gains and losses on securities
Net realized investment gains	$ (59.8)	$ (14.4)	$ (43.2)
Provision for income taxes	19.4	4.0	14.5
Net of taxes	$ (40.4)

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Pension Benefits (Tables)

12 Months Ended

Dec. 31, 2013

Compensation And Retirement Disclosure [Abstract]

Schedule of Change in Plan Assets

The assets and liabilities of the plans were measured as of December 31 of the respective years presented.

(in millions)	2013			2012
Change in plan assets
Fair value of plan assets at beginning of year	$	20.1		$	19.7
Actual return on plan assets		1.9			2.0
Employer contributions		0.2			0.2
Settlements and benefits paid		(2.0	)		(1.8	)
Fair value of plan assets at end of year	$	20.2		$	20.1

Schedule of Change in Projected Benefit Obligation

(in millions)	2013			2012
Change in projected benefit obligation
Projected benefit obligation at beginning of year	$	24.6		$	22.7
Interest cost		0.8			1.0
Actuarial (gain) loss		(0.8	)		2.7
Benefits paid		(2.0	)		(1.8	)
Projected benefit obligation at end of year	$	22.6		$	24.6

Schedule of Assumptions to Determine Benefit Obligations

Assumptions used to determine benefit obligations at December 31 were as follows:

	2013			2012
Weighted average discount rate		4.42	%		3.63	%
Expected rate of increase in future compensation levels		n/a			n/a

Schedule of Assumptions to Determine Net Periodic Benefit Cost

Assumptions used to determine net periodic benefit cost for the years ended December 31:

	2013			2012			2011
Weighted average discount rate		3.63	%		4.50	%		4.98	%
Expected return on plan assets		6.00	%		6.00	%		6.00	%
Expected rate of increase in future compensation levels		n/a			n/a			n/a

Components of Net Periodic Benefit Cost

Components of net periodic benefit cost for the years ended December 31 were as follows:

(in millions)	2013			2012			2011
Interest cost	$	0.8		$	1.0		$	1.0
Expected return on plan assets		(1.0	)		(1.1	)		(1.2	)
Settlement charge		0.0			0.0			0.2
Amortization of actuarial loss		0.3			0.3			0.2
Net periodic benefit cost	$	0.1		$	0.2		$	0.2

Schedule of Fair Value Measurement

The fair values of the plan assets at December 31, 2013 and 2012 by asset category are as follows:

			Fair Value Measurements
			at Reporting Date Using
(in millions)	December 31, 2013		Level 1 (a)		Level 2 (b)		Level 3 (c)
Equity Securities:
Mutual Funds:
Large cap U.S. equity	$	3.2	$	3.2	$	0.0	$	0.0
Small-mid cap U.S. equity		1.4		1.4		0.0		0.0
International equity		1.5		1.5		0.0		0.0
Real estate		0.5		0.5		0.0		0.0
Convertible bonds and equities		0.2		0.2		0.0		0.0
U.S. and global government and corporate fixed maturity		12.9		12.9		0.0		0.0
Cash and short-term investments:
Short-term investment fund (1)		0.5		0.0		0.5		0.0
Total	$	20.2	$	19.7	$	0.5	$	0.0

^(a)  Quoted prices in active markets for identical assets

^(b)  Significant other observable inputs

^(c)  Significant unobservable inputs

⁽¹⁾  Assets invested in one common collective trust composed of high-grade money market money instruments with short maturities.

			Fair Value Measurements
			at Reporting Date Using
(in millions)	December 31, 2012		Level 1 (a)		Level 2 (b)		Level 3 (c)
Equity Securities:
Mutual Funds:
Large cap U.S. equity	$	2.6	$	2.6	$	0.0	$	0.0
Small-mid cap U.S. equity		1.0		1.0		0.0		0.0
International equity		1.3		1.3		0.0		0.0
Real estate		0.5		0.5		0.0		0.0
Convertible bonds and equities		0.1		0.1		0.0		0.0
U.S. and global government and corporate fixed maturity		13.9		13.9		0.0		0.0
Cash and short-term investments:
Short-term investment fund (1)		0.7		0.0		0.7		0.0
Total	$	20.1	$	19.4	$	0.7	$	0.0

^(a)  Quoted prices in active markets for identical assets

^(b)  Significant other observable inputs

^(c)  Significant unobservable inputs

⁽¹⁾  Assets invested in one common collective trust composed of high-grade money market money instruments with short maturities.

Schedule of Expected Benefit Payments

We expect to make the following benefit payments:

	Pension
(in millions)	Benefits
2014	$	1.7
2015		1.8
2016		1.6
2017		1.9
2018		1.6
Years 2019 to 2023		7.6
Total	$	16.2

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Pension Benefits - Schedule of Expected Benefit Payments (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013
Compensation And Retirement Disclosure [Abstract]
2014	$ 1.7
2015	1.8
2016	1.6
2017	1.9
2018	1.6
Years 2019 to 2023	7.6
Total	$ 16.2

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Income Taxes (Tables)

12 Months Ended

Dec. 31, 2013

Income Tax Disclosure [Abstract]

Income Tax Provision (Benefit)

Our income tax provision includes the following components for the years ended December 31:

(in millions)	2013		2012		2011
Current tax provision	$	32.7	$	9.4	$	9.8
Deferred tax provision related to:
Future tax deductions		0.1		2.9		9.4
Valuation allowance change		3.7		2.1		0.8
Income tax provision	$	36.5	$	14.4	$	20.0

Schedule of Pre-Tax Income (Loss) and Effective Income Tax Rates

For the years ended December 31, 2013, 2012 and 2011, pre-tax income (loss) attributable to our operations and the operations’ effective tax rates were as follows:

	2013						2012						2011
	Pre-Tax			Effective Tax			Pre-Tax			Effective Tax			Pre-Tax			Effective Tax
(in millions)	Income (Loss)			Rate			Income (Loss)			Rate			Income (Loss)			Rate
Bermuda	$	50.5			0.0	%	$	10.0			0.0	%	$	(129.8	)		0.0	%
United States		120.9			28.2	%		52.0			21.3	%		99.6			28.4	%
United Kingdom		18.5			12.0	%		14.0			24.4	%		(27.3	)		29.5	%
Belgium		0.2			103.0	%		(0.1	)		98.4	%		0.3			20.7	%
Brazil		(9.7	)		0.0	%		(6.5	)		0.0	%		(4.1	)		0.0	%
Dubai		1.1			0.0	%		0.0	(1)		0.0	%		0.1			0.0	%
Ireland		(0.1	)		0.0	%		(0.2	)		0.0	%		(0.3	)		0.0	%
Malta		(1.7	)		0.0	%		(2.6	)		0.0	%		(0.4	)		0.0	%
Switzerland		0.0	(1)		5.6	%		0.1			22.8	%		0.0	(1)		37.3	%
Pre-tax income (loss)	$	179.7					$	66.7					$	(61.9	)

⁽¹⁾  Pre-tax income for the respective year was less than $0.1 million.

Reconciliation of Difference Between Provision for Income Taxes and Expected Tax Provision at Weighted Average Tax Rate

A reconciliation of the difference between the provision for income taxes and the expected tax provision at the weighted average tax rate is as follows:

(in millions)	2013			2012			2011
Income tax provision at expected rate	$	43.1		$	18.5		$	26.0
Tax effect of:
Tax-exempt interest		(5.6	)		(5.6	)		(5.8	)
Dividends received deduction		(2.3	)		(2.2	)		(1.6	)
Valuation allowance change		3.7			2.1			0.8
Other permanent adjustments, net		0.3			1.8			0.3
Adjustment for prior year tax return		(1.6	)		0.2			1.6
United States state tax benefit		0.3			(0.3	)		(0.3	)
Other foreign adjustments		(0.1	)		0.0			0.1
Prior year foreign taxes		1.1			0.0			(0.6	)
Rate adjustment on loss carrybacks		0.0			0.0			(0.4	)
Deferred tax rate reduction		(1.2	)		(0.6	)		(0.4	)
Foreign exchange adjustments		(1.7	)		0.5			0.3
Foreign withholding taxes		0.5			0.0			0.0
Income tax provision	$	36.5		$	14.4		$	20.0
Income tax provision (benefit)—Foreign	$	2.4		$	3.3		$	(8.0	)
Income tax provision—United States Federal		33.2			11.5			28.5
Income tax (benefit) provision—United States State		0.4			(0.4	)		(0.5	)
Foreign withholding tax—United States		0.5			0.0			0.0
Income tax provision	$	36.5		$	14.4		$	20.0

Schedule of Deferred Tax Assets and Liabilities

(in millions)	2013			2012
Deferred tax assets:
Unrealized losses on fixed maturities and other investment securities	$	0.0		$	0.4
Losses and loss adjustment expense reserve discounting		28.4			33.1
Unearned premiums		23.0			23.3
Capital loss carryforward		29.8			30.7
Allowance for bad debt		1.9			1.3
Accrual for contingent commissions		0.4			0.6
Net operating loss carryforward		19.8			19.8
Impairment of investment values		10.6			9.7
United States amortization of intangible assets		3.1			3.3
Accrued bonus		5.7			3.1
Accrued vacation		1.6			2.1
Stock option expense		6.4			4.4
United Kingdom interest		0.8			0.9
Brazil operating losses		8.0			3.9
Malta operating losses		1.7			1.0
Other		7.0			5.2
Deferred tax assets, gross		148.2			142.8
Deferred tax liabilities:
Unrealized gains on equity securities		(65.1	)		(51.2	)
Unrealized gains on fixed maturities and other investment securities		(16.1	)		(47.5	)
Deferred acquisition costs		(19.5	)		(19.1	)
United States amortization of intangible assets		(3.3	)		(3.2	)
United Kingdom underwriting losses		(4.8	)		(3.8	)
United Kingdom amortization of intangible assets		(2.8	)		(3.8	)
Brussels pension		(0.2	)		(0.2	)
United States state tax		0.0			(0.3	)
Other		(8.9	)		(5.0	)
Deferred tax liabilities, gross		(120.7	)		(134.1	)
Deferred tax assets, net before valuation allowance		27.5			8.7
Valuation allowance		(56.2	)		(52.5	)
Deferred tax liabilities, net	$	(28.7	)	$	(43.8	)
Net deferred tax liabilities—Foreign	$	(7.0	)	$	(7.0	)
Net deferred tax liabilities—United States		(21.7	)		(36.8	)
Deferred tax liabilities, net	$	(28.7	)	$	(43.8	)

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Share-based Compensation - Fair Value Assumptions (Detail)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free rate of return	0.80%	0.68%	0.81%
Expected dividend yields	1.49%	1.58%	1.37%
Expected award life (years)	4 years 10 months 28 days	5 years 11 days	5 years 15 days
Expected volatility	26.30%	32.10%	32.20%
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free rate of return	1.71%	1.11%	2.07%
Expected dividend yields	1.67%	1.67%	1.56%
Expected award life (years)	5 years 26 days	5 years 22 days	5 years 26 days
Expected volatility	32.10%	32.80%	32.80%

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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Statement Of Income And Comprehensive Income [Abstract]
Net income (loss)	$ 143.2	$ 52.3	$ (81.9)
Other comprehensive income (loss):
Foreign currency translation adjustments	(2.8)	(2.3)	(6.4)
Defined benefit pension plans:
Net gain (loss) arising during the year	0.7	(0.3)	(0.8)
Net gain (loss) arising during the year	2.0	(0.9)	(2.2)
Unrealized gains on securities:
Gains arising during the year	1.2	87.4	50.4
Reclassification adjustment for gains included in net income (loss)	(59.8)	(14.4)	(43.2)
Other comprehensive (loss) income before tax	(59.4)	69.8	(1.4)
Defined benefit pension plans:
Net gain (loss) arising during the year	0.7	(0.3)	(0.8)
Net gain (loss) arising during the year	2.0	(0.9)	(2.2)
Unrealized gains on securities:
Gains arising during the year	1.0	24.4	21.7
Reclassification adjustment for gains included in net income (loss)	(19.4)	(4.0)	(14.5)
Income tax (benefit) provision related to other comprehensive income (loss)	(17.7)	20.1	6.4
Other comprehensive (loss) income, net of tax	(41.7)	49.7	(7.8)
Comprehensive income (loss)	$ 101.5	$ 102.0	$ (89.7)

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Shareholders Equity - Additional Information (Detail) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended												12 Months Ended				3 Months Ended	0 Months Ended			12 Months Ended	3 Months Ended	12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	May 07, 2013	Mar. 31, 2013 10% Stock Dividend [Member]	Feb. 18, 2011 2011 Repurchase Authorization [Member]	Nov. 05, 2013 2013 Repurchase Authorization [Member]	Feb. 18, 2011 2013 Repurchase Authorization [Member]	Dec. 31, 2013 2013 Repurchase Authorization [Member]	Dec. 31, 2013 Open Market [Member]	Dec. 31, 2013 Open Market [Member]
Equity [Line Items]
Cash dividend declared - common stock outstanding, per share	$ 0.15	$ 0.15	$ 0.15	$ 0.15	$ 0.11	$ 0.11	$ 0.11	$ 0.11	$ 0.11	$ 0.11	$ 0.11	$ 0.11	$ 0.59	$ 0.44	$ 0.44		$ 0.14
Dividend payable, date of record	Dec. 02, 2013	Sep. 02, 2013	Jun. 03, 2013	Mar. 01, 2013	Dec. 03, 2012	Sep. 04, 2012	Jun. 01, 2012	Mar. 01, 2012	Dec. 01, 2011	Sep. 01, 2011	Jun. 01, 2011	Mar. 01, 2011	Jun. 03, 2013
Stock dividend declared	10.00%												10.00%			10.00%
Additional stock issued as dividend													2,447,839
Dividend payable, date declared	Nov. 04, 2013	Aug. 06, 2013	May 07, 2013		Nov. 06, 2012	Aug. 07, 2012	May 08, 2012	Feb. 15, 2012	Nov. 08, 2011	Aug. 05, 2011	May 03, 2011	Feb. 18, 2011	Jun. 17, 2013
Cash dividends paid - common shares, total	$ 4.0	$ 4.0	$ 4.1	$ 3.7	$ 3.0	$ 3.0	$ 3.1	$ 3.2	$ 3.2	$ 3.3	$ 3.3	$ 3.3	$ 15.8	$ 12.3	$ 13.1
Dividend payable, Date	Dec. 16, 2013	Sep. 16, 2013	Jun. 20, 2013	Mar. 15, 2013	Dec. 17, 2012	Sep. 18, 2012	Jun. 15, 2012	Mar. 15, 2012	Dec. 15, 2011	Sep. 15, 2011	Jun. 15, 2011	Mar. 15, 2011
Preferred shares, authorized	30,000,000												30,000,000
Preferred shares, par value	$ 1.00												$ 1.00
Preferred shares, issued
Preferred shares, outstanding
Common stock repurchase authorization, maximum																		150.0		150.0
Shares purchased during period, Value													45.1	44.6	49.3				150.0
Stock repurchase program, number of shares authorized to be repurchased																					0
Common stock repurchase authorization for future repurchases																					143.6
Common shares repurchased													1,098,732	1,488,308	1,607,745							149,744	526,583
Common shares repurchased, total cost																						$ 6.4	$ 22.2

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Investments

12 Months Ended

Dec. 31, 2013

Investments Debt And Equity Securities [Abstract]

Investments

2. Investments

Composition of Invested Assets

The amortized cost, gross unrealized gains, gross unrealized losses and fair value of investments as of December 31 were as follows:

December 31, 2013			Gross		Gross
	Amortized		Unrealized		Unrealized		Fair
(in millions)	Cost		Gains		Losses		Value
Fixed maturities
USD denominated:
U.S. Governments	$	273.4	$	2.4	$	0.5	$	275.3
Non-U.S. Governments		60.9		0.3		1.0		60.2
Obligations of states and political subdivisions		563.7		22.9		8.8		577.8
Credit-Financial		426.3		15.4		1.8		439.9
Credit-Industrial		385.5		13.8		2.2		397.1
Credit-Utility		162.0		5.4		0.8		166.6
Structured securities:
CMO/MBS-agency (1)		219.4		9.2		1.7		226.9
CMO/MBS-non agency		19.4		0.8		0.0		20.2
CMBS (2)		162.7		3.1		1.0		164.8
ABS-residential (3)		6.8		0.3		0.5		6.6
ABS-non residential		116.8		0.5		0.1		117.2
Foreign denominated:
Governments		207.7		4.9		5.9		206.7
Credit		155.5		4.4		4.8		155.1
Total fixed maturities		2,760.1		83.4		29.1		2,814.4
Equity securities		346.9		188.6		1.2		534.3
Other investments		377.4		2.8		1.3		378.9
Short-term investments		351.6		0.0		0.0		351.6
Total investments	$	3,836.0	$	274.8	$	31.6	$	4,079.2

December 31, 2012			Gross		Gross
	Amortized		Unrealized		Unrealized		Fair
(in millions)	Cost		Gains		Losses		Value
Fixed maturities
USD denominated:
U.S. Governments	$	401.1	$	9.3	$	0.0	$	410.4
Non-U.S. Governments		53.1		3.6		0.1		56.6
Obligations of states and political subdivisions		551.7		44.9		0.5		596.1
Credit-Financial		382.4		25.7		0.7		407.4
Credit-Industrial		428.4		31.1		0.7		458.8
Credit-Utility		189.9		12.6		0.4		202.1
Structured securities:
CMO/MBS-agency (1)		375.1		20.2		0.2		395.1
CMO/MBS-non agency		12.5		1.0		0.2		13.3
CMBS (2)		109.5		5.7		0.2		115.0
ABS-residential (3)		10.1		0.2		0.8		9.5
ABS-non residential		81.3		1.2		0.0		82.5
Foreign denominated:
Governments		262.1		9.2		4.3		267.0
Credit		135.9		6.1		1.8		140.2
Total fixed maturities		2,993.1		170.8		9.9		3,154.0
Equity securities		373.5		153.0		5.1		521.4
Other investments		294.8		1.2		5.0		291.0
Short-term investments		234.3		0.1		0.1		234.3
Total investments	$	3,895.7	$	325.1	$	20.1	$	4,200.7

⁽¹⁾  Collateralized mortgage obligations/mortgage-backed securities (“CMO/MBS”).

⁽²⁾  Commercial mortgage-backed securities (“CMBS”).

⁽³⁾  Asset-backed securities (“ABS”).

Included in “Total investments” in our Consolidated Balance Sheets at December 31, 2013 and 2012 is $87.3 million and $143.9 million, respectively, of assets managed on behalf of the trade capital providers, who are third party capital participants that provide underwriting capital to our Syndicate 1200 segment.

Contractual Maturity

The amortized cost and fair values of fixed maturity investments as of December 31, 2013, by contractual maturity, were as follows:

	Amortized		Fair
(in millions)	Cost		Value
Due in one year or less	$	223.7	$	225.5
Due after one year through five years		1,245.7		1,268.7
Due after five years through ten years		549.1		570.3
Thereafter		216.5		214.2
Structured securities		525.1		535.7
Total	$	2,760.1	$	2,814.4

The expected maturities may differ from the contractual maturities because debtors may have the right to call or prepay obligations.

Unrealized Losses and Other-than-temporary Impairments

An aging of unrealized losses on our investments in fixed maturities, equity securities, other investments and short-term investments as of December 31 is presented below:

December 31, 2013	Less Than One Year					One Year or Greater				Total
	Fair			Unrealized		Fair		Unrealized		Fair			Unrealized
(in millions)	Value			Losses		Value		Losses		Value			Losses
Fixed maturities
USD denominated:
U.S. Governments	$	55.3		$	0.5	$	0.0	$	0.0	$	55.3		$	0.5
Non-U.S. Governments		36.3			1.0		0.0		0.0		36.3			1.0
Obligations of states and political subdivisions (2)		154.6			8.8		3.1		0.0		157.7			8.8
Credit-Financial		88.7			1.7		2.4		0.1		91.1			1.8
Credit-Industrial		85.7			2.0		2.9		0.2		88.6			2.2
Credit-Utility		21.2			0.7		1.9		0.1		23.1			0.8
Structured securities:
CMO/MBS-agency		58.4			1.2		5.6		0.5		64.0			1.7
CMBS (2)		24.2			1.0		1.1		0.0		25.3			1.0
ABS-residential		0.0			0.0		3.6		0.5		3.6			0.5
ABS-non residential (2)		59.1			0.1		2.0		0.0		61.1			0.1
Foreign denominated:
Governments		170.5			5.9		0.0		0.0		170.5			5.9
Credit		125.3			4.8		0.0		0.0		125.3			4.8
Total fixed maturities		879.3			27.7		22.6		1.4		901.9			29.1
Equity securities		25.5			1.2		0.0		0.0		25.5			1.2
Other investments		(1.4	)		1.3		0.0		0.0		(1.4	)		1.3
Short-term investments (1)		4.5			0.0		0.0		0.0		4.5			0.0
Total		$907.9			$30.2		$22.6		$1.4		$930.5			$31.6

⁽¹⁾  Unrealized losses less than one year are less than $0.1 million.

⁽²⁾  Unrealized losses one year or greater are less than $0.1 million

December 31, 2012	Less Than One Year				One Year or Greater				Total
	Fair		Unrealized		Fair		Unrealized		Fair		Unrealized
(in millions)	Value		Losses		Value		Losses		Value		Losses
Fixed maturities
USD denominated:
U.S. Governments (1)	$	11.9	$	0.0	$	0.0	$	0.0	$	11.9	$	0.0
Non-U.S. Governments (2)		8.5		0.1		0.5		0.0		9.0		0.1
Obligations of states and political subdivisions		28.2		0.3		0.8		0.2		29.0		0.5
Credit-Financial		25.0		0.2		8.6		0.5		33.6		0.7
Credit-Industrial		32.2		0.4		3.0		0.3		35.2		0.7
Credit-Utility		8.4		0.2		0.8		0.2		9.2		0.4
Structured securities:
CMO/MBS-agency (2)		26.4		0.2		0.3		0.0		26.7		0.2
CMO/MBS-non agency		1.7		0.2		0.0		0.0		1.7		0.2
CMBS (1)		5.7		0.0		3.5		0.2		9.2		0.2
ABS-residential		0.0		0.0		3.9		0.8		3.9		0.8
ABS-non residential (1) (2)		13.7		0.0		0.2		0.0		13.9		0.0
Foreign denominated:
Governments (2)		180.5		4.3		0.3		0.0		180.8		4.3
Credit		76.3		1.8		0.0		0.0		76.3		1.8
Total fixed maturities		418.5		7.7		21.9		2.2		440.4		9.9
Equity securities		60.2		4.2		6.3		0.9		66.5		5.1
Other investments		11.6		5.0		0.0		0.0		11.6		5.0
Short-term investments		0.0		0.1		0.0		0.0		0.0		0.1
Total	$	490.3	$	17.0	$	28.2	$	3.1	$	518.5	$	20.1

⁽¹⁾  Unrealized losses less than one year are less than $0.1 million.

⁽²⁾  Unrealized losses one year or greater are less than $0.1 million.

We hold a total of 5,809 securities, of which 1,326 were in an unrealized loss position for less than one year and 49 were in an unrealized loss position for a period one year or greater as of December 31, 2013. Unrealized losses greater than twelve months on fixed maturities were the result of a number of factors, including increased credit spreads, foreign currency fluctuations and higher market yields relative to the date the securities were purchased, and for structured securities, by the performance of the underlying collateral as well. We also considered that we do not intend to sell the investments and it is unlikely that we will be required to sell the investments before recovery of their amortized cost basis, which may be maturity. We do not consider these investments to be other-than-temporarily impaired at December 31, 2013.

We regularly evaluate our investments for other than temporary impairment. For fixed maturity securities, the evaluation for a credit loss is generally based on the present value of expected cash flows of the security as compared to the amortized book value. For structured securities, frequency and severity of loss inputs are used in projecting future cash flows of the securities. Loss frequency is measured as the credit default rate, which includes such factors as loan-to-value ratios and credit scores of borrowers. Loss severity includes such factors as trends in real estate values and proceeds at foreclosure. We also recognize other-than-temporary losses on fixed maturity securities that we intend to sell. We recognized other-than-temporary losses on our fixed maturities portfolio of $6.0 million, $1.5 million and $0.1 million for 2013, 2012 and 2011, respectively. For equity securities and other investments, the length of time and the amount of decline in fair value are the principal factors in determining other-than-temporary impairment. We recognized other-than-temporary losses on our equity portfolio of $1.8 million, $2.2 million and $1.1 million for 2013, 2012 and 2011, respectively. In situations where we did not recognize other-than-temporary losses on investments in our equity portfolio, we have evaluated the near-term prospects of the investment in relation to the severity and duration of the impairment and based on that evaluation, have the ability and intent to hold these investments until a recovery of the cost basis.

Net Investment Income and Realized Gains and Losses

Investment income and expenses for the years ended December 31 were as follows:

(in millions)	2013			2012			2011
Investment income:
Interest and dividends on fixed maturities	$	87.7		$	105.9		$	121.4
Dividends on equity securities		17.7			15.2			9.6
Interest on short-term and other investments		5.0			7.3			4.7
Other		(1.0	)		(0.4	)		(0.5	)
		109.4			128.0			135.2
Investment expenses		(9.4	)		(9.2	)		(9.4	)
Net investment income	$	100.0		$	118.8		$	125.8

The following table presents our gross realized investment and other gains (losses) for the years ended December 31:

(in millions)	2013			2012			2011
Realized gains
Fixed maturities	$	33.5		$	27.2		$	30.5
Equity securities		59.1			0.4			26.6
Other investments		38.9			21.5			16.1
Short-term investments		0.1			0.5			1.0
Gain on sale of affiliate		0.0			4.8			0.0
Gross realized investment and other gains		131.6			54.4			74.2
Realized losses
Fixed maturities		(19.6	)		(9.1	)		(11.6	)
Equity securities		(1.4	)		(0.5	)		(0.7	)
Other investments		(30.8	)		(15.1	)		(10.5	)
Short-term investments		(0.7	)		(0.3	)		(1.0	)
Other-than-temporary impairment losses on fixed maturities		(6.0	)		(1.5	)		(0.1	)
Other-than-temporary impairment losses on equity securities		(1.8	)		(2.2	)		(1.1	)
Gross realized investment and other losses		(60.3)			(28.7)			(25.0)
Net realized investment and other gains		$71.3			$25.7			$49.2

We enter into short-term, currency spot and forward contracts to mitigate foreign exchange rate exposure for certain non-U.S. Dollar denominated fixed maturity investments. The forward contracts used are typically less than sixty days and are renewed as long as the non-U.S. Dollar denominated fixed maturity investments are held in our portfolio. These forward contracts are designated as fair value hedges for accounting purposes.

As of December 31, 2013, 2012 and 2011, we hedged $0.1 million, $2.3 million and $3.1 million, respectively, of certain holdings in non-U.S. Dollar denominated fixed maturity investments with $0.1 million, $2.2 million and $3.3 million, respectively, of foreign exchange contracts. The net realized effect on income was not significant for the reporting periods.

We also enter into foreign currency exchange forward contracts to manage currency exposure on losses related to global catastrophe events. These currency forwards contacts are carried at fair value in our Consolidated Balance Sheets in “Other investments.” The realized and unrealized gains and losses are included in “Net realized investment and other gains” in our Consolidated Statements of Income (Loss). The notional amount of the currency forward contracts was $57.2 million, $102.8 million and $142.4 million as of December 31, 2013, 2012 and 2011, respectively. The fair value of the currency forward contracts was a loss of $1.3 million, $1.9 million and $0.1 million as of December 31, 2013, 2012 and 2011, respectively. For the years ended December 31, 2013, 2012 and 2011, we recognized $7.8 million, $8.0 million and $9.4 million in realized gains and $10.4 million, $7.5 million and $4.8 million in realized losses, respectively, from the currency forward contracts.

Regulatory Deposits, Pledged Securities and Letters of Credit

At December 31, 2013, the amortized cost and fair value of investments on deposit with U.S. and various regulatory agencies for regulatory purposes were $196.7 million and $203.4 million, respectively. At December 31, 2012, the amortized cost and fair value of investments on deposit with U.S. and various regulatory agencies for regulatory purposes were $210.3 million and $227.2 million, respectively.

Investments with an amortized cost of $97.7 million and fair value of $98.6 million were pledged as collateral in support of all irrevocable letters of credit at December 31, 2013, respectively, primarily in support of irrevocable letters of credit in the amount of $60.2 million issued under the terms of certain reinsurance agreements in respect of reported loss and loss expense reserves at December 31, 2013.

Investments with an amortized cost of $218.5 million and fair value of $221.5 million were pledged as collateral in support of irrevocable letters of credit at December 31, 2012. These assets support irrevocable letters of credit issued under the terms of certain reinsurance agreements in respect of reported loss and loss expense reserves in the amount of $64.0 million and $124.9 million for our Corporate member’s capital as security to support the underwriting business at Lloyd’s.

At December 31, our Corporate member’s capital supporting our Lloyd’s business consisted of the following:

(in millions)	2013		2012
Fixed maturities, at fair value	$	250.7	$	200.3
Short-term investments, at fair value		0.1		3.6
Letters of credit		0.0		124.9
Total securities and letters of credit pledged to Lloyd’s	$	250.8	$	328.8

Fair Value Measurements

Fair value is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. Fair value measurement assumes that the transaction to sell the asset or transfer the liability occurs in the principal market for the asset or liability, or in the absence of a principal market, the most advantageous market. Market participants are buyers and sellers in the principal (or most advantageous) market that are independent, knowledgeable, able to transact for the asset or liability and willing to transfer the asset or liability.

Valuation techniques consistent with the market approach, income approach and/or cost approach are used to measure fair value. The inputs of these valuation techniques are categorized into three levels.

• Level 1 inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities that can be accessed at the reporting date. We define actively traded as a security that has traded in the past seven days. We receive one quote per instrument for Level 1 inputs.

• Level 2 inputs are inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly. We receive one quote per instrument for Level 2 inputs.

• Level 3 inputs are unobservable inputs. Unobservable inputs reflect our own assumptions about the assumptions market participants would use in pricing the asset or liability based on the best information available in the circumstances.

We receive fair value prices from third-party pricing services and our outside investment managers. These prices are determined using observable market information such as dealer quotes, market spreads, cash flows, yield curves, live trading levels, trade execution data, market consensus prepayment speeds, credit information and the security’s terms and conditions, among other things. We have reviewed the processes used by the third-party providers for pricing the securities, and have determined that these processes result in fair values consistent with GAAP requirements. In addition, we review these prices for reasonableness, and have not adjusted any prices received from the third-party providers as of December 31, 2013. A description of the valuation techniques we use to measure assets at fair value is as follows:

Fixed Maturities (Available-for-Sale) Levels 1 and 2:

• United States Treasury securities are typically valued using Level 1 inputs. For these securities, we obtain fair value measurements from third-party pricing services using quoted prices (unadjusted) in active markets at the reporting date.

• United States Government agencies, non-U.S. Government securities, obligations of states and political subdivisions, credit securities and foreign denominated securities are reported at fair value using Level 2 inputs. For these securities, we obtain fair value measurements from third-party pricing services. Observable data may include dealer quotes, market spreads, yield curves, live trading levels, trade execution data, credit information and the security’s terms and conditions, among other things.

• CMO/MBS agency, CMO/MBS non-agency, CMBS, ABS residential and ABS non-residential securities are reported at fair value using Level 2 inputs. For these securities, we obtain fair value measurements from third-party pricing services. Observable data may include dealer quotes, market spreads, cash flows, yield curves, live trading levels, trade execution data, market consensus prepayment speeds, credit information and the security’s terms and conditions, among other things.

Fixed Maturities (Available-for-Sale) Level 3:

• Corporate securities reported at fair value using Level 3 inputs in 2012 were infrequently traded securities valued by an independent investment manager using unobservable inputs. These securities were sold in 2012.

Equity Securities Level 1: Equity securities are principally reported at fair value using Level 1 inputs. For these securities, we obtain fair value measurements from a third party pricing service using quoted prices (unadjusted) in active markets at the reporting date.

Equity Securities Level 2: We own interests in mutual funds that are reported at fair value using Level 2 inputs. The valuations are based on the funds’ net asset value per share, determined weekly or at the end of each month. The underlying assets in the funds are valued primarily on the basis of closing market quotations or official closing prices on each valuation day.

Equity Securities Level 3: We own certain equity securities that are reported at fair value using Level 3 inputs. The valuation techniques for these securities include the following:

• Fair value measurements are obtained from the National Association of Insurance Commissioners’ Security Valuation Office at the reporting date.

• Fair value measurements for an investment in an equity fund obtained by applying final prices provided by the administrator of the fund, which is based upon certain estimates and assumptions.

Other Investments Level 2: Foreign regulatory deposits are assets held in trust in jurisdictions where there is a legal and regulatory requirement to maintain funds locally in order to protect policyholders. Lloyd’s is the appointed investment manager for the funds. These assets are invested in short term government securities, agency securities and corporate bonds and are valued using Level 2 inputs based upon values obtained from Lloyd’s. Foreign currency future contracts are valued by our counterparty using market driven foreign currency exchange rates and are considered Level 2 investments.

Short-term Investments: Short-term investments are principally reported at fair value using Level 1 inputs, with the exception of short-term corporate bonds reported at fair value using Level 2 inputs as described in the fixed maturities section above. Values for the investments categorized as Level 1 are obtained from various financial institutions as of the reporting date.

Other Assets Level 3: We have one reinsurance contract deemed a derivative in 2013 and two reinsurance contracts deemed derivatives in 2012. The fair values were estimated by management taking into account changes in the market for catastrophe bond reinsurance contracts with similar economic characteristics and potential recoveries from events preceding the valuation date. See Note 6 “Derivative Instruments” for related disclosures.

Transfers Between Level 1 and Level 2 Securities: There were no transfers between Level 1 and Level 2 securities during 2013 or 2012.

Based on an analysis of the inputs, our financial assets measured at fair value on a recurring basis at December 31, 2013 and 2012 have been categorized as follows:

			Fair Value Measurements at Reporting Date Using
(in millions)	December 31, 2013		Level 1 (a)		Level 2 (b)		Level 3 (c)
Fixed maturities
USD denominated:
U.S. Governments	$	275.3	$	143.8	$	131.5	$	0.0
Non-U.S. Governments		60.2		0.0		60.2		0.0
Obligations of states and political subdivisions		577.8		0.0		577.8		0.0
Credit-Financial		439.9		0.0		439.9		0.0
Credit-Industrial		397.1		0.0		397.1		0.0
Credit-Utility		166.6		0.0		166.6		0.0
Structured securities:
CMO/MBS-agency		226.9		0.0		226.9		0.0
CMO/MBS-non agency		20.2		0.0		20.2		0.0
CMBS		164.8		0.0		164.8		0.0
ABS-residential		6.6		0.0		6.6		0.0
ABS-non residential		117.2		0.0		117.2		0.0
Foreign denominated:
Governments		206.7		0.0		206.7		0.0
Credit		155.1		0.0		155.1		0.0
Total fixed maturities		2,814.4		143.8		2,670.6		0.0
Equity securities		534.3		476.7		56.3		1.3
Other investments		117.8		0.0		117.8		0.0
Short-term investments		351.6		347.0		4.6		0.0
Other assets		2.6		0.0		0.0		2.6
	$	3,820.7	$	967.5	$	2,849.3	$	3.9

^(a)  Quoted prices in active markets for identical assets

^(b)  Significant other observable inputs

^(c)  Significant unobservable inputs

			Fair Value Measurements at Reporting Date Using
(in millions)	December 31, 2012		Level 1 (a)		Level 2 (b)		Level 3 (c)
Fixed maturities
USD denominated:
U.S. Governments	$	410.4	$	219.5	$	190.9	$	0.0
Non-U.S. Governments		56.6		0.0		56.6		0.0
Obligations of states and political subdivisions		596.1		0.0		596.1		0.0
Credit-Financial		407.4		0.0		407.4		0.0
Credit-Industrial		458.8		0.0		458.8		0.0
Credit-Utility		202.1		0.0		202.1		0.0
Structured securities:
CMO/MBS-agency		395.1		0.0		395.1		0.0
CMO/MBS-non agency		13.3		0.0		13.3		0.0
CMBS		115.0		0.0		115.0		0.0
ABS-residential		9.5		0.0		9.5		0.0
ABS-non residential		82.5		0.0		82.5		0.0
Foreign denominated:
Governments		267.0		0.0		267.0		0.0
Credit		140.2		0.0		140.2		0.0
Total fixed maturities		3,154.0		219.5		2,934.5		0.0
Equity securities		521.4		469.0		50.6		1.8
Other investments		132.0		0.0		132.0		0.0
Short-term investments		234.3		201.1		33.2		0.0
Other assets		6.9		0.0		0.0		6.9
	$	4,048.6	$	889.6	$	3,150.3	$	8.7

^(a)  Quoted prices in active markets for identical assets

^(b)  Significant other observable inputs

^(c)  Significant unobservable inputs

The fair value measurements in the tables above do not agree to “Total investments” on our Consolidated Balance Sheets as they exclude certain other investments that are accounted for under the equity-method of accounting and include reinsurance contracts that are classified as “Other assets”.

A reconciliation of the beginning and ending balances for the investments categorized as Level 3 at December 31, 2013 and 2012 are as follows:

(in millions)	Equity Securities			Other Assets			Total
Beginning balance, January 1, 2013	$	1.8		$	6.9		$	8.7
Transfers into Level 3		0.0			0.0			0.0
Transfers out of Level 3		0.0			0.0			0.0
Total gains or losses (realized/unrealized):
Included in net income (loss)		0.1			0.0			0.1
Included in other comprehensive income (loss)		0.0			0.0			0.0
Purchases, issuances, sales, and settlements
Purchases		0.0			0.0			0.0
Issuances		0.0			0.0			0.0
Sales		(0.6	)		0.0			(0.6	)
Settlements		0.0			(4.3	)		(4.3	)
Ending balance, December 31, 2013	$	1.3		$	2.6		$	3.9
Amount of total gains or losses for the year included in net income (loss) attributable to the change in unrealized gains or losses relating to assets still held at December 31, 2013	$	0.0		$	0.0		$	0.0

Fair Value Measurements Using Unobservable Inputs (Level 3)

(in millions)	Credit Financial			Equity Securities			Other Assets			Total
Beginning balance, January 1, 2012	$	0.7		$	2.4		$	9.0		$	12.1
Transfers into Level 3		0.0			0.0			0.0			0.0
Transfers out of Level 3		0.0			0.0			0.0			0.0
Total gains or losses (realized/unrealized):
Included in net income (loss)		0.1			0.0			0.0			0.1
Included in other comprehensive income (loss)		0.0			0.0			0.0			0.0
Purchases, issuances, sales, and settlements
Purchases		0.0			0.0			0.0			0.0
Issuances		0.0			0.0			0.0			0.0
Sales		(0.8	)		(0.6	)		0.0			(1.4	)
Settlements		0.0			0.0			(2.1	)		(2.1	)
Ending balance, December 31, 2012	$	0.0		$	1.8		$	6.9		$	8.7
Amount of total gains or losses for the year included in net income (loss) attributable to the change in unrealized gains or losses relating to assets still held at December 31, 2012	$	0.0		$	0.0		$	0.0		$	0.0

At December 31, 2013 and 2012, we did not have any financial assets or financial liabilities measured at fair value on a nonrecurring basis.

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Business and Significant Accounting Policies - Additional Information (Detail) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2009 Institution Trust	May 07, 2013
Business And Significant Accounting Policies [Line Items]
Percentage of contractual participation	100.00%
Number of Statutory Trusts				12
Number of Charitable Foundations				2
Stock dividend declared	10.00%				10.00%
Additional stock issued as dividend	2,447,839
Short-term investments, maturity term	1 year
Percentage of investment portfolio in fair value from pricing service or broker	1.00%
Allowance for doubtful accounts	$ 4.5	$ 2.5
Allowance for uncollectible reinsurance balances receivable on paid losses and incurred claims	3.7	4.4
Weighted average useful life	9 years 9 months 18 days
Amortization expense	6.1	5.2	4.6
Estimated amortization expense for 2014	5.4
Estimated amortization expense for 2015	5.4
Estimated amortization expense for 2016	5.1
Estimated amortization expense for 2017	4.4
Estimated amortization expense for 2018	2.4
Estimated liability for return of premiums	6.8	7.0
Accumulated depreciation for property and equipment	65.5	53.1
Net book value of property and equipment	79.0	68.7
Depreciation expense	15.5	12.6	10.1
Foreign currency translation adjustment	(11.5)	(8.7)
Income taxes paid	14.2	21.0	16.7
Income taxes recovered	0	10.0	0.2
Reinsurance recoverables	52.7	252.3
Ceded reinsurance payable	154.2	252.3
Increase in Reinsurance recoverable	$ 9.2
Minimum [Member]
Business And Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life	3 years
Maximum [Member]
Business And Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life	40 years
Distribution Network [Member]
Business And Significant Accounting Policies [Line Items]
Weighted average useful life	5 years
Additional Lloyd's Capacity [Member]
Business And Significant Accounting Policies [Line Items]
Weighted average useful life	9 years
Other [Member]
Business And Significant Accounting Policies [Line Items]
Weighted average useful life	9 years 3 months 18 days
Excess and Surplus Lines [Member]
Business And Significant Accounting Policies [Line Items]
Percentage of decline in the fair value of reporting units	38.00%
Commercial Specialty [Member]
Business And Significant Accounting Policies [Line Items]
Percentage of decline in the fair value of reporting units	21.00%
Syndicate 1200 [Member]
Business And Significant Accounting Policies [Line Items]
Percentage of decline in the fair value of reporting units	16.00%

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Derivative Instruments - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	0 Months Ended		12 Months Ended
	Dec. 28, 2011	Jun. 18, 2011	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011 Contract
Offsetting [Abstract]
Number of reinsurance contracts					2
Coverage amount	$ 100	$ 100
Coverage period, months	24 months	18 months
Other reinsurance-related expenses			19.2	27.3	5.9
Other assets			$ 2.6	$ 6.9

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Share-Based Compensation - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended		12 Months Ended
	Dec. 31, 2013	May 07, 2013	Dec. 31, 2013 Maximum [Member]	Dec. 31, 2013 2007 Plan [Member] Maximum [Member]	Dec. 31, 2013 2007 Employee Share Purchase Plan [Member]	Dec. 31, 2012 2007 Employee Share Purchase Plan [Member]	Dec. 31, 2011 2007 Employee Share Purchase Plan [Member]
Schedule Of Share Repurchase Programs [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting period, maximum, years			4 years	5 years	3 months
Share-based compensation arrangement by share-based payment award, compensation expense					$ 23.0	$ 10.3	$ 4.4
Employee service share-based compensation, tax benefit from compensation expense					$ 18.3	$ 8.4	$ 4.0
Stock dividend declared	10.00%	10.00%
Percentage of increase in number of awards outstanding	10.00%
Change in the exercise price of awards outstanding	(9.09%)

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Investments - Securities and Letters of Credit Pledged to Lloyd's as Company's Corporate Member's Capital (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Investments Debt And Equity Securities [Abstract]
Fixed maturities, at fair value	$ 250.7	$ 200.3
Short-term investments, at fair value	0.1	3.6
Letters of credit	0	124.9
Total securities and letters of credit pledged to Lloyd's	$ 250.8	$ 328.8

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Statutory Accounting Principles

12 Months Ended

Dec. 31, 2013

Text Block [Abstract]

Statutory Accounting Principles

20. Statutory Accounting Principles

Financial Information

The statutory capital and surplus for our principal operating subsidiaries at December 31, 2013 and 2012 was as follows:

Statutory capital and surplus (1)	December 31,
(in millions)	2013		2012
Bermuda	$	1,218.2	$	1,180.1
United Kingdom (2)		225.8		227.7
United States		822.3		781.3

⁽¹⁾  Such amounts include ownership interests in affiliate insurance and reinsurance subsidiaries.

⁽²⁾  Capital on deposit with Lloyd’s in U.S. Dollars

The statutory net income (loss) for our principal operating subsidiaries for 2013, 2012 and 2011 was as follows:

Statutory net income (loss) (1)	For the Years Ended December 31,
(in millions)	2013		2012			2011
Bermuda	$	85.1	$	(4.2	)	$	(47.7	)
United Kingdom (2)		42.3		40.7			(63.4	)
United States		117.4		42.9			67.0

⁽¹⁾  Such amounts include ownership interests in affiliate insurance and reinsurance subsidiaries.

⁽²⁾  In U.S. Dollars

Dividends

As an insurance and reinsurance holding company, Argo Group is largely dependent on dividends and other permitted payments from its insurance and reinsurance subsidiaries to pay cash dividends to its shareholders, for debt service and for its operating expenses. The ability of Argo Group’s insurance and reinsurance subsidiaries to pay dividends to Argo Group is subject to certain restrictions imposed by the jurisdictions of domicile that regulate our insurance and reinsurance subsidiaries and each jurisdiction has calculations for the amount of dividends that an insurance and reinsurance company can pay without the approval of the insurance regulator.

The payment of dividends to Argo Group’s shareholders is governed by the Bermuda Companies Act of 1981, as amended, which permits the payment of dividends so long as (i) the Company is not, or would not after the payment, be unable to pay its liabilities as they become due or (ii) the realizable value of the Company’s assets is in excess of its liabilities after taking such payment into account. In light of these restrictions, we have no additional material restrictions on dividend payments that may be made to our shareholders at December 31, 2013.

Argo Re is the direct subsidiary of Argo Group, and therefore, has direct dividend paying capabilities to the parent. As of December 31, 2013, Argo Re’s solvency and liquidity margins and statutory capital and surplus were in excess of the minimum levels required by the Insurance Act. As of December 31, 2013 and 2012, the minimum statutory capital and surplus required to be maintained by Argo Re was $343.9 million and $312.5 million, respectively.

Argo Re is generally prohibited from declaring or paying, in any financial year, dividends of more than 25% of its total statutory capital and surplus (as shown on its previous financial year’s statutory balance sheet) unless it files (at least seven days before payment of such dividends) with the BMA an affidavit signed by at least two directors (one of whom must be a Bermuda resident director if any of the insurer’s directors are resident in Bermuda) and the principal representative stating that it will continue to meet its solvency margin and minimum liquidity ratio. Argo Re may not reduce its total statutory capital by 15% or more, as set out in its previous year’s financial statements, unless it has received the prior approval of the BMA. Based on these regulatory restrictions, the maximum amount available for payment of dividends to Argo Group by Argo Re during 2014 without prior regulatory approval is $304.5 million.

In 2013 and 2011, Argo Re paid cash dividends of $84.5 million and $100.0 million, respectively, to Argo Group which were used to repay intercompany notes and receivables in 2013, and repay intercompany notes in 2011. Argo Re did not pay dividends to Argo Group in 2012.

Our U.S. insurance subsidiaries file financial statements prepared in accordance with statutory accounting principles prescribed or permitted by insurance regulatory authorities of the state in which they are domiciled. The differences between statutory-based financial statements and financial statements prepared in accordance with GAAP vary between jurisdictions. The principal differences are that for statutory-based financial statements, deferred policy acquisition costs are not recognized, a portion of the deferred federal income tax asset is recorded, bonds are generally carried at amortized cost, certain assets are non-admitted and charged directly to surplus, a collectability allowance related to reinsurance recoverables are charged directly to surplus and outstanding losses and unearned premium are presented net of reinsurance.

As an intermediate insurance holding company, Argo Group US is largely dependent on dividends and other permitted payments from its insurance subsidiaries to service its debt, fund operating expenses and pay dividends to Argo Ireland. Various state insurance laws restrict the amount that may be transferred to Argo Group US from its subsidiaries in the form of dividends without prior approval of regulatory authorities. In addition, that portion of the insurance subsidiaries’ net equity that results from the difference between statutory insurance principles and GAAP would not be available for dividends.

In December 2013, Argo Group US received an ordinary dividend in the amount of $9.5 million in cash from Rockwood, an ordinary dividend in the amount of $24.8 million, in the form of $0.1 million in cash and $24.7 million in the form of securities, from Argonaut Insurance Company, and an extraordinary dividend of $76.2 million, in the form of $0.3 million in cash and $75.9 million in the form of securities, from Colony Insurance Company (“Colony”).

In September 2012, Argo Group US received an ordinary dividend in the amount of $10.0 million in cash from Rockwood and an ordinary dividend of $59.0 million, in the form of securities, from Colony.

In June 2011, Argo Group US received an extraordinary dividend in the amount of $30.0 million in cash from Rockwood. In December 2011, Argo Group US received an extraordinary dividend of $99.4 million, in the form of $48.1 million in cash and $51.3 million in securities, from Colony.

Argonaut Insurance Company is a direct subsidiary of Argo Group US and is regulated by the Illinois Division of Insurance. During 2014, based on the state of domicile’s ordinary dividend calculation, Argonaut Insurance Company may be permitted to pay dividends of up to $24.8 million without approval from the Illinois Division of Insurance. Colony, a direct subsidiary of Argo Group US, is regulated by the Virginia Bureau of Insurance. Colony may be permitted to pay dividends of up to $41.5 million without approval from the Virginia Department of Insurance during 2014. Rockwood, a direct subsidiary of Argo Group US, is regulated by the Pennsylvania Department of Insurance. Rockwood may be permitted to pay dividends of up to $18.1 million without approval from the Pennsylvania Department of Insurance during 2014. Each department of insurance may require prior approval for the payment of all dividends, based on business and regulatory conditions of the insurance companies.

Dividend payments from Argo International to its immediate parent are not restricted by regulatory authority. Dividend payments will be at the discretion of Argo International’s Board of Directors and will be subject to the earnings, operations, financial condition, capital and general business requirements of Argo International.

Certain assets of our subsidiaries are pledged to regulatory agencies, serve as collateral for letters of credit or are assigned as the assets of the trade capital providers of our Lloyd’s syndicate, and therefore, are not available funds that may be paid up as dividends to Argo Group. See Note 2, “Investments” and Note 16, “Segment Information” for further discussion.

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Segment Information - Revenue and (Loss) Income Before Income Taxes for Each Segment (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Segment Reporting Information [Line Items]
Earned premiums									$ 1,303.8	$ 1,186.5	$ 1,082.0
Net investment income									100.0	118.8	125.8
Fee (expense)income, net									(4.9)	5.3	1.4
Total segment income (loss) before taxes									148.8	87.8	(80.9)
Net realized investment (losses) gains									71.3	25.7	49.2
Net realized investment (losses) gains									71.3	25.7	49.2
Net realized investment (losses) gains									71.3	25.7	49.2
Total revenue									1,470.2	1,336.3	1,258.4
Total (loss) income before income taxes	66.5	32.9	42.8	37.5	(4.1)	17.7	25.0	28.1	179.7	66.7	(61.9)
Excess and Surplus Lines [Member]
Segment Reporting Information [Line Items]
Earned premiums									460.2	399.3	405.3
Net investment income									42.2	51.1	56.0
Total segment income (loss) before taxes									89.4	74.1	65.9
Commercial Specialty [Member]
Segment Reporting Information [Line Items]
Earned premiums									299.0	317.5	316.7
Net investment income									22.8	27.6	27.7
Total segment income (loss) before taxes									21.4	(24.8)	(3.6)
International Specialty [Member]
Segment Reporting Information [Line Items]
Earned premiums									142.4	130.1	101.3
Net investment income									8.4	12.3	10.9
Total segment income (loss) before taxes									11.3	11.3	(70.9)
Syndicate 1200 [Member]
Segment Reporting Information [Line Items]
Earned premiums									401.7	337.9	259.3
Net investment income									11.0	15.3	17.2
Total segment income (loss) before taxes									37.3	28.1	(67.0)
Run-Off Lines [Member]
Segment Reporting Information [Line Items]
Earned premiums									0.5	1.7	(0.6)
Net investment income									10.8	12.5	13.3
Total segment income (loss) before taxes									(10.6)	(0.9)	(5.3)
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Net investment income									4.8	0	0.7
Net realized investment (losses) gains									(40.4)	(46.8)	(30.2)
Net realized investment (losses) gains									(40.4)	(46.8)	(30.2)
Net realized investment (losses) gains									$ (40.4)	$ (46.8)	$ (30.2)

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Disclosures About Fair Value of Financial Instruments - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Financial Instruments Owned and Pledged as Collateral [Line Items]
Premiums receivable	$ 348.4	$ 361.0
Reinsurance recoverable	1,263.5	1,320.9
Over 90 Days [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Premiums receivable	9.8	24.3
Reinsurance recoverable	22.2	18.0
Premiums receivable, allowance for doubtful accounts	4.5	2.5
Reinsurance recoverables, allowance for doubtful accounts	1.6	2.2
Premiums receivable, secured by collateral	0.4	0.4
Reinsurance recoverables, secured by collateral	$ 0.3	$ 0.3

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Leases - Schedule of Future Minimum Payments Under Non-Cancelable Operating Leases (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013
Leases [Abstract]
2014	$ 11.1
2015	10.8
2016	8.5
2017	7.5
2018	5.9
Thereafter	13.8
Total	$ 57.6

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Income Taxes - Income Tax Provision (Benefit) (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]
Current tax provision	$ 32.7	$ 9.4	$ 9.8
Future tax deductions	0.1	2.9	9.4
Valuation allowance change	3.7	2.1	0.8
Income tax provision	$ 36.5	$ 14.4	$ 20.0

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Business and Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2013

Accounting Policies [Abstract]

Summary of Receivables

For the years ended December 31, 2013, 2012 and 2011, premiums receivable and reinsurance recoverables on paid losses written off, net of recoveries against the allowance for doubtful accounts or directly to the income statement are as follows:

(in millions)	2013			2012			2011
Premiums receivable	$	0.2		$	0.3		$	0.9
Reinsurance recoverables		(0.0	)		(0.4	)		11.4
Net written off (recovered)	$	0.2		$	(0.1	)	$	12.3

Intangible Assets And Accumulated Amortization

The following table presents our intangible assets and accumulated amortization at December 31:

	December 31, 2013				December 31, 2012
(in millions)	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
Lloyd’s capacity	$	60.5		n/a	$	60.5		n/a
Title plant		1.8		n/a		1.8		n/a
Distribution network		44.8		23.1		44.2		18.0
Additional Lloyd’s capacity		4.8		3.2		4.8		2.3
Other		1.5		1.1		1.5		1.0
	$	113.4	$	27.4	$	112.8	$	21.3

Supplemental Cash Flow Information

Interest paid. Interest paid for the years ended December 31, was as follows:

(in millions)	2013		2012		2011
Senior unsecured fixed rate notes	$	9.3	$	2.1	$	0.0
Junior subordinated debentures		7.9		21.3		18.3
Other indebtedness		2.6		3.1		3.5
Revolving credit facility		0.0		0.0		0.0
Total interest paid	$	19.8	$	26.5	$	21.8

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Underwriting, Acquisition and Insurance Expenses

12 Months Ended

Dec. 31, 2013

Text Block [Abstract]

Underwriting, Acquisition and Insurance Expenses

13. Underwriting, Acquisition and Insurance Expenses

Underwriting, acquisition and insurance expenses for the years ended December 31, 2013, 2012 and 2011 were as follows:

(in millions)	2013			2012			2011
Commissions	$	229.6		$	198.2		$	183.2
General expenses		272.8			248.0			210.1
Premium taxes, boards and bureaus		24.2			22.8			24.7
		526.6			469.0			418.0
Net (deferral) amortization of policy acquisition costs		(15.8	)		(4.5	)		7.7
Total underwriting, acquisition and insurance expenses	$	510.8		$	464.5		$	425.7

Included in general expenses for the years ended December 31, 2013, 2012 and 2011 is $23.0 million, $10.3 million and $4.4 million, respectively, in additional expense for our total equity compensation, due to the increase in our stock price.

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Pension Benefits - Schedule of Assumptions to Determine Benefit Obligations (Detail)	Dec. 31, 2013	Dec. 31, 2012
Compensation And Retirement Disclosure [Abstract]
Weighted average discount rate	4.42%	3.63%
Expected rate of increase in future compensation levels