10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

x        QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d)

OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended September 30,2016

OR

¨        TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d)

OF THE SECURITIES EXCHANGE ACT OF 1934

Commission file number 001-31721

AXIS CAPITAL HOLDINGS LIMITED

(Exact name of registrant as specified in its charter)

BERMUDA

(State or other jurisdiction of incorporation or organization)

98-0395986

(I.R.S. Employer Identification No.)

92 Pitts Bay Road, Pembroke, Bermuda HM 08

(Address of principal executive offices and zip code)

(441) 496-2600

(Registrant’s telephone number, including area code)

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 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 Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T 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 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 Exchange Act).  Yes  ¨  No  x

As of October 19,2016, there were 88,445,095 Common Shares, $0.0125 par value per share, of the registrant outstanding.

AXIS CAPITAL HOLDINGS LIMITED

INDEX TO FORM 10-Q

		Page
	PART I
	Financial Information	3
Item 1.	Consolidated Financial Statements	4
Item 2.	Management's Discussion and Analysis of Financial Condition and Results of Operations	42
Item 3.	Quantitative and Qualitative Disclosures About Market Risk	74
Item 4.	Controls and Procedures	74
	PART II
	Other Information	75
Item 1.	Legal Proceedings	75
Item 1A.	Risk Factors	75
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	76
Item 5.	Other Information	76
Item 6.	Exhibits	77
	Signatures	78

2

PART I FINANCIAL INFORMATION

This quarterly report contains forward-looking statements within the meaning of the U.S. federal securities laws. We intend these forward-looking statements to be covered by the safe harbor provisions for forward-looking statements in the United States securities laws. In some cases, these statements can be identified by the use of forward-looking words such as “may”, “should”, “could”, “anticipate”, “estimate”, “expect”, “plan”, “believe”, “predict”, “potential” and “intend”. Forward-looking statements contained in this report may include information regarding our estimates of losses related to catastrophes and other large losses, measurements of potential losses in the fair value of our investment portfolio and derivative contracts, our expectations regarding pricing and other market conditions, our growth prospects, and valuations of the potential impact of movements in interest rates, equity prices, credit spreads and foreign currency rates. Forward-looking statements only reflect our expectations and are not guarantees of performance.

These statements involve risks, uncertainties and assumptions. Accordingly, there are or will be important factors that could cause actual results to differ materially from those indicated in such statements. We believe that these factors include, but are not limited to, the following:

• the occurrence and magnitude of natural and man-made disasters,

• actual claims exceeding our loss reserves,

• general economic, capital and credit market conditions,

• the failure of any of the loss limitation methods we employ,

• the effects of emerging claims, coverage and regulatory issues, including uncertainty related to coverage definitions, limits, terms and conditions,

• the failure of our cedants to adequately evaluate risks,

• inability to obtain additional capital on favorable terms, or at all,

• the loss of one or more key executives,

• a decline in our ratings with rating agencies,

• loss of business provided to us by our major brokers,

• changes in accounting policies or practices,

• the use of industry catastrophe models and changes to these models,

• changes in governmental regulations,

• increased competition,

• changes in the political environment of certain countries in which we operate or underwrite business including the United Kingdom’s expected withdrawal from the European Union,

• fluctuations in interest rates, credit spreads, equity prices and/or currency values, and

• the other matters set forth under Item 1A, ‘Risk Factors’ and Item 7, ‘Management’s Discussion and Analysis of Financial Condition and Results of Operations’ included in our Annual Report on Form 10-K for the year ended December 31, 2015.

We undertake no obligation to update or revise publicly any forward-looking statements, whether as a result of new information, future events or otherwise.

3

ITEM 1.     CONSOLIDATED FINANCIAL STATEMENTS

	Page
Consolidated Balance Sheets at September 30, 2016 (Unaudited) and December 31, 2015	5
Consolidated Statements of Operations for the three and nine months ended September 30, 2016 and 2015 (Unaudited)	6
Consolidated Statements of Comprehensive Income for the three and nine months ended September 30, 2016 and 2015 (Unaudited)	7
Consolidated Statements of Changes in Shareholders' Equity for the nine months ended September 30, 2016 and 2015 (Unaudited)	8
Consolidated Statements of Cash Flows for the nine months ended September 30, 2016 and 2015 (Unaudited)	9
Notes to Consolidated Financial Statements (Unaudited)	10
Note 1 - Basis of Presentation and Accounting Policies	10
Note 2 - Segment Information	12
Note 3 - Investments	14
Note 4 - Fair Value Measurements	22
Note 5 - Derivative Instruments	32
Note 6 - Reserve for Losses and Loss Expenses	35
Note 7 - Share-Based Compensation	36
Note 8 - Earnings Per Common Share	38
Note 9 - Shareholders' Equity	39
Note 10 - Commitments and Contingencies	40
Note 11 - Other Comprehensive Income (Loss)	41
Note 12 - Subsequent Event	42

4

AXIS CAPITAL HOLDINGS LIMITED

CONSOLIDATED BALANCE SHEETS

SEPTEMBER 30,2016 (UNAUDITED) AND DECEMBER 31,2015

	2016			2015
	(in thousands)
Assets
Investments:
Fixed maturities, available for sale, at fair value (Amortized cost 2016: $11,462,399; 2015: $11,897,639)	$	11,566,860		$	11,719,749
Equity securities, available for sale, at fair value (Cost 2016: $600,604; 2015: $575,776)	644,344			597,998
Mortgage loans, held for investment, at amortized cost and fair value	332,753			206,277
Other investments, at fair value	847,262			816,756
Equity method investments	111,295			10,932
Short-term investments, at amortized cost and fair value	39,877			34,406
Total investments	13,542,391			13,386,118
Cash and cash equivalents	848,200			988,133
Restricted cash and cash equivalents	229,063			186,618
Accrued interest receivable	71,096			73,729
Insurance and reinsurance premium balances receivable	2,694,976			1,967,535
Reinsurance recoverable on unpaid and paid losses	2,336,741			2,096,104
Deferred acquisition costs	545,618			471,782
Prepaid reinsurance premiums	582,551			396,201
Receivable for investments sold	2,285			26,478
Goodwill and intangible assets	85,501			86,858
Other assets	283,969			302,335
Total assets	$	21,222,391		$	19,981,891
Liabilities
Reserve for losses and loss expenses	$	9,874,807		$	9,646,285
Unearned premiums	3,453,655			2,760,889
Insurance and reinsurance balances payable	461,519			356,417
Senior notes	992,633			991,825
Payable for investments purchased	141,245			9,356
Other liabilities	272,874			350,237
Total liabilities	15,196,733			14,115,009
Shareholders’ equity
Preferred shares	625,000			627,843
Common shares (2016: 176,575; 2015: 176,240 shares issued and 2016: 88,439; 2015: 96,066 shares outstanding)	2,206			2,202
Additional paid-in capital	2,307,866			2,241,388
Accumulated other comprehensive income (loss)	98,505			(188,465		)
Retained earnings	6,430,573			6,194,353
Treasury shares, at cost (2016: 88,136; 2015: 80,174 shares)	(3,438,492		)	(3,010,439		)
Total shareholders’ equity	6,025,658			5,866,882
Total liabilities and shareholders’ equity	$	21,222,391		$	19,981,891

See accompanying notes to Consolidated Financial Statements.

5

AXIS CAPITAL HOLDINGS LIMITED

CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED)

FOR THE THREE AND NINE MONTHS ENDEDSEPTEMBER 30,2016 AND 2015

	Three months ended						Nine months ended
	2016			2015			2016			2015
	(in thousands, except for per share amounts)
Revenues
Net premiums earned	$	934,415		$	919,341		$	2,783,746		$	2,764,605
Net investment income	116,923			45,685			257,818			226,336
Other insurance related income	5,944			1,158			4,850			12,319
Termination fee received	—			280,000			—			280,000
Net realized investment gains (losses):
Other-than-temporary impairment ("OTTI") losses	(4,247		)	(32,301		)	(20,346		)	(62,762		)
Other realized investment gains (losses)	9,452			(37,656		)	(19,949		)	(60,856		)
Total net realized investment gains (losses)	5,205			(69,957		)	(40,295		)	(123,618		)
Total revenues	1,062,487			1,176,227			3,006,119			3,159,642
Expenses
Net losses and loss expenses	532,328			560,387			1,663,584			1,652,868
Acquisition costs	189,810			182,744			559,570			537,549
General and administrative expenses	142,906			144,727			439,554			456,451
Foreign exchange gains	(13,795		)	(28,088		)	(69,781		)	(69,200		)
Interest expense and financing costs	12,839			12,918			38,586			38,114
Reorganization and related expenses	—			45,867			—			45,867
Total expenses	864,088			918,555			2,631,513			2,661,649
Income before income taxes and interest in income (loss) of equity method investments	198,399			257,672			374,606			497,993
Income tax expense	9,352			30			7,712			1,155
Interest in loss of equity method investments	(2,434		)	—			(2,434		)	—
Net income	186,613			257,642			364,460			496,838
Preferred share dividends	9,969			10,022			29,906			30,066
Net income available to common shareholders	$	176,644		$	247,620		$	334,554		$	466,772
Per share data
Net income per common share:
Basic net income	$	1.97		$	2.52		$	3.64		$	4.69
Diluted net income	$	1.96		$	2.50		$	3.61		$	4.65
Weighted average number of common shares outstanding - basic	89,621			98,226			91,852			99,464
Weighted average number of common shares outstanding - diluted	90,351			99,124			92,579			100,468
Cash dividends declared per common share	$	0.35		$	0.29		$	1.05		$	0.87

See accompanying notes to Consolidated Financial Statements.

6

AXIS CAPITAL HOLDINGS LIMITED

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED)

FOR THE THREE AND NINE MONTHS ENDEDSEPTEMBER 30,2016 AND 2015

	Three months ended						Nine months ended
	2016			2015			2016		2015
	(in thousands)
Net income	$	186,613		$	257,642		$	364,460	$	496,838
Other comprehensive income (loss), net of tax:
Available for sale investments:
Unrealized investment gains (losses) arising during the period	36,336			(99,711		)	238,656		(176,938		)
Adjustment for reclassification of net realized investment gains (losses) and OTTI losses recognized in net income	(2,642		)	74,810			42,620		128,770
Unrealized investment gains (losses) arising during the period, net of reclassification adjustment	33,694			(24,901		)	281,276		(48,168		)
Foreign currency translation adjustment	1,722			(14,626		)	5,694		(23,851		)
Total other comprehensive income (loss), net of tax	35,416			(39,527		)	286,970		(72,019		)
Comprehensive income	$	222,029		$	218,115		$	651,430	$	424,819

See accompanying notes to Consolidated Financial Statements.

7

AXIS CAPITAL HOLDINGS LIMITED

CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS’ EQUITY (UNAUDITED)

FOR THE NINE MONTHS ENDEDSEPTEMBER 30,2016 AND 2015

	2016			2015
	(in thousands)
Preferred shares
Balance at beginning of period	$	627,843		$	627,843
Shares repurchased	(2,843		)	—
Balance at end of period	625,000			627,843
Common shares (par value)
Balance at beginning of period	2,202			2,191
Shares issued	4			11
Balance at end of period	2,206			2,202
Additional paid-in capital
Balance at beginning of period	2,241,388			2,285,016
Shares issued - common shares	(4		)	2,472
Cost of treasury shares reissued	(19,647		)	(17,674		)
Settlement of accelerated share repurchase	60,000			(60,000		)
Stock options exercised	—			558
Share-based compensation expense	26,129			19,906
Balance at end of period	2,307,866			2,230,278
Accumulated other comprehensive income (loss)
Balance at beginning of period	(188,465		)	(45,574		)
Unrealized gains (losses) on available for sale investments, net of tax:
Balance at beginning of period	(149,585		)	(28,192		)
Unrealized gains (losses) arising during the period, net of reclassification adjustment	281,276			(48,168		)
Non-credit portion of OTTI losses	—			—
Balance at end of period	131,691			(76,360		)
Cumulative foreign currency translation adjustments, net of tax:
Balance at beginning of period	(38,880		)	(17,382		)
Foreign currency translation adjustments	5,694			(23,851		)
Balance at end of period	(33,186		)	(41,233		)
Balance at end of period	98,505			(117,593		)
Retained earnings
Balance at beginning of period	6,194,353			5,715,504
Net income	364,460			496,838
Preferred share dividends	(29,906		)	(30,066		)
Common share dividends	(98,334		)	(88,379		)
Balance at end of period	6,430,573			6,093,897
Treasury shares, at cost
Balance at beginning of period	(3,010,439		)	(2,763,859		)
Shares repurchased for treasury	(449,086		)	(264,076		)
Cost of treasury shares reissued	21,033			17,674
Balance at end of period	(3,438,492		)	(3,010,261		)
Total shareholders’ equity	$	6,025,658		$	5,826,366

See accompanying notes to Consolidated Financial Statements.

8

AXIS CAPITAL HOLDINGS LIMITED

CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED)

FOR THE NINE MONTHS ENDEDSEPTEMBER 30,2016 AND 2015

	2016			2015
	(in thousands)
Cash flows from operating activities:
Net income	$	364,460		$	496,838
Adjustments to reconcile net income to net cash provided by operating activities:
Net realized investment losses	40,295			123,618
Net realized and unrealized gains on other investments	(23,117		)	(17,616		)
Amortization of fixed maturities	51,660			75,645
Interest in loss of equity method investments	2,434			—
Other amortization and depreciation	17,370			26,219
Share-based compensation expense, net of cash payments	28,580			25,435
Changes in:
Accrued interest receivable	3,286			7,128
Reinsurance recoverable balances	(163,212		)	(158,362		)
Deferred acquisition costs	(73,759		)	(77,348		)
Prepaid reinsurance premiums	(184,648		)	(69,016		)
Reserve for loss and loss expenses	216,828			212,066
Unearned premiums	682,686			380,610
Insurance and reinsurance balances, net	(623,170		)	(330,128		)
Other items	(74,383		)	7,841
Net cash provided by operating activities	265,310			702,930
Cash flows from investing activities:
Purchases of:
Fixed maturities	(6,624,573		)	(8,110,841		)
Equity securities	(295,827		)	(240,415		)
Mortgage loans	(131,087		)	(129,431		)
Other investments	(177,500		)	(61,591		)
Equity method investments	(103,548		)	—
Short-term investments	(81,479		)	(34,147		)
Proceeds from the sale of:
Fixed maturities	6,067,663			6,797,585
Equity securities	296,182			112,794
Other investments	170,111			244,353
Short-term investments	67,408			112,694
Proceeds from redemption of fixed maturities	977,852			1,107,175
Proceeds from redemption of short-term investments	8,185			22,337
Proceeds from the repayment of mortgage loans	4,808			—
Purchase of other assets	(19,055		)	(18,401		)
Change in restricted cash and cash equivalents	(42,445		)	27,996
Net cash provided by (used in) investing activities	116,695			(169,892		)
Cash flows from financing activities:
Repurchase of common shares	(389,086		)	(332,097		)
Dividends paid - common shares	(100,670		)	(89,611		)
Dividends paid - preferred shares	(29,940		)	(30,066		)
Repurchase of preferred shares	(2,843		)	—
Proceeds from issuance of common shares	8			3,042
Net cash used in financing activities	(522,531		)	(448,732		)
Effect of exchange rate changes on foreign currency cash and cash equivalents	593			(13,883		)
Increase (decrease) in cash and cash equivalents	(139,933		)	70,423
Cash and cash equivalents - beginning of period	988,133			921,830
Cash and cash equivalents - end of period	$	848,200		$	992,253

Supplemental disclosures of cash flow information: Total consideration paid for a quota share and adverse development reinsurance cover was $170 million of which $92 million was settled by transfer of securities and was treated as a non cash activity on the Consolidated Statement of Cash Flows.

See accompanying notes to Consolidated Financial Statements.

9

AXIS CAPITAL HOLDINGS LIMITED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

1. BASIS OF PRESENTATION AND ACCOUNTING POLICIES

Basis of Presentation

These interim consolidated financial statements include the accounts of AXIS Capital Holdings Limited (“AXIS Capital”) and its subsidiaries (herein referred to as “we,” “us,” “our,” or the “Company”).

The consolidated balance sheet at September 30,2016 and the consolidated statements of operations, comprehensive income, shareholders' equity and cash flows for the periods ended September 30,2016 and 2015 have not been audited. The balance sheet at December 31, 2015 is derived from our audited financial statements.

These financial statements have been prepared in accordance with U.S. Generally Accepted Accounting Principles (“U.S. GAAP”) for interim financial information and with the Securities and Exchange Commission's (“SEC”) instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by U.S. GAAP for complete financial statements. In the opinion of management, these financial statements reflect all adjustments (consisting of normal recurring adjustments) considered necessary for a fair presentation of our financial position and results of operations for the periods presented. The results of operations for any interim period are not necessarily indicative of the results for a full year. All inter-company accounts and transactions have been eliminated.

The following information should be read in conjunction with our Annual Report on Form 10-K for the year ended December 31, 2015. Tabular dollar and share amounts are in thousands, except per share amounts. All amounts are reported in U.S. dollars. To facilitate comparison of information across periods, certain reclassifications have been made to prior year amounts to conform to the current year's presentation. These reclassifications did not impact our results of operations, financial condition or liquidity.

Significant Accounting Policies

There were no notable changes in our significant accounting policies subsequent to our Annual Report on Form 10-K for the year ended December 31, 2015, with the exception of the addition of accounting policies for equity method investments and retroactive accounting noted below.

Equity Method Investments

Investments in which the Company has significant influence over the operating and financial policies of the investee are classified as equity method investments and are accounted for using the equity method of accounting. In applying the equity method of accounting, investments are initially recorded at cost and are subsequently adjusted based on the Company’s proportionate share of net income or loss of the investee. Adjustments are based on the most recently available financial information from the investee.Changes in the carrying value of such investments are recorded in net income as interest in income (loss) of equity method investments.

Retroactive Reinsurance

Retroactive reinsurance reimburses a ceding company for liabilities incurred as a result of past insurable events covered under contracts subject to the reinsurance. In certain instances, reinsurance contracts cover losses both on a prospective basis and on a retroactive basis and where practical the Company bifurcates the prospective and retrospective elements of these reinsurance contracts and accounts for each element separately. Initial gains in connection with retroactive reinsurance contracts are deferred and amortized into income over the settlement period while losses are recognized immediately. When changes in the estimated amount recoverable from the reinsurer or in the timing of receipts related to that amount occur, a cumulative amortization adjustment is recognized in earnings in the period of the change so that the deferred gain reflects the balance that would have existed had the revised estimate been available at the inception of the reinsurance transaction.

New Accounting Standards Adopted in 2016

Share-Based Compensation

Effective January 1, 2016, the Company adopted the Accounting Standards Update ("ASU") 2014-12, "Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could be Achieved after the Requisite Service Period" issued by the Financial Accounting Standards Board (the "FASB"). This guidance requires that compensation costs be recognized in the period in which it becomes probable that the performance target will be achieved and to represent the compensation cost attributable to the period(s) for which the requisite service has already been rendered. This guidance was issued to clarify treatment where there was a divergence in accounting practice and its adoption did not impact our results of operations, financial condition or liquidity.

Debt Issuance Costs

Effective January 1, 2016, the Company adopted ASU 2015-03, "Simplifying the Presentation of Debt Issuance Costs" issued by the FASB. This guidance requires the debt issuance costs related to a recognized debt liability to be presented in the balance sheet as a direct deduction from the debt liability rather than as an asset. This guidance was issued to simplify the presentation of debt issuance costs and to resolve conflicting guidance. This guidance did not impact our results of operations, financial condition or liquidity.

Investments Measured Using The Net Asset Value Per Share ("NAV") Practical Expedient

Effective January 1, 2016, the Company adopted ASU 2015-07, "Disclosures for Investments in Certain Entities That Calculate Net Asset Value per Share (or its Equivalent)" issued by the FASB. This guidance eliminated the requirement to categorize investments measured using the net asset value ("NAV") practical expedient in the fair value hierarchy table. As this new guidance related solely to disclosures, the adoption did not impact our results of operations, financial condition or liquidity. The updated disclosures have been provided in Note 4 'Fair Value Measurements'.

Recently Issued Accounting Standards Not Yet Adopted

Leases

In February 2016, the FASB issued guidance that provides a new comprehensive model for lease accounting. The guidance will require most leases to be recognized on the balance sheet by recording a right-of-use asset and a corresponding lease liability. This guidance is effective for reporting periods beginning after December 15, 2018, and interim periods within those fiscal years with early adoption permitted. The Company is currently evaluating the impact of this guidance on our results of operations, financial condition and liquidity.

Transition To Equity Method Of Accounting

In March 2016, the FASB issued new guidance eliminating the requirement that an investor retrospectively apply equity method accounting when an existing investment qualifies for equity method accounting. The guidance is effective for annual periods beginning after December 15, 2016, and interim periods within those fiscal years with early adoption permitted. The guidance will be adopted on a prospective basis. The adoption of this guidance is not expected to materially impact our results of operations, financial condition or liquidity.

Share-Based Compensation Accounting

In March 2016, the FASB issued new guidance that will change the accounting for certain aspects of share-based compensation payments to employees. The guidance will require all income tax effects of awards to be recognized in the income statement when the awards vest or are settled. The guidance will also allow employers to increase the amounts withheld to cover income taxes on

10

AXIS CAPITAL HOLDINGS LIMITED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

1. BASIS OF PRESENTATION AND ACCOUNTING POLICIES (CONTINUED)

share-based compensation awards without requiring liability classification. Additionally, companies will be required to elect whether they will account for award forfeitures by recognizing forfeitures only as they occur or by estimating the number of awards expected to be forfeited. This guidance is effective for annual periods beginning after December 15, 2016, and interim periods within those fiscal years with early adoption permitted. The Company is currently evaluating the impact of this guidance on our results of operations, financial condition and liquidity.

Credit Losses

In June 2016, the FASB issued a new credit loss standard that changes the impairment model for most financial assets and certain other instruments. The guidance will replace the current "incurred loss" approach with a more forward looking "expected loss" model for instruments measured at amortized cost and will require entities to record allowances for available-for-sale debt securities rather than reduce the carrying amount. This guidance is effective for annual periods beginning after December 15, 2019, and interim periods within those fiscal years. Early adoption is permitted for annual periods beginning after December 15, 2018, and interim periods within those fiscal years. The Company is currently evaluating the impact of this guidance on our results of operations, financial condition and liquidity.

Cash Flows

In August 2016, the FASB issued new guidance to clarify how certain cash receipts and cash payments should be classified on the statement of cash flows. This guidance is effective for annual periods beginning after December 15, 2017, and interim periods within those fiscal years with early adoption permitted. The adoption of this guidance is not expected to impact our results of operations, financial condition or liquidity.

11

AXIS CAPITAL HOLDINGS LIMITED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

2. SEGMENT INFORMATION

Our underwriting operations are organized around our global underwriting platforms, AXIS Insurance and AXIS Re. Therefore we have determined that we have two reportable segments, insurance and reinsurance. We do not allocate our assets by segment, with the exception of goodwill and intangible assets, as we evaluate the underwriting results of each segment separately from the results of our investment portfolio.

The following tables summarize the underwriting results of our reportable segments, as well as the carrying values of allocated goodwill and intangible assets:

	2016									2015
Three months ended and at September 30,	Insurance			Reinsurance			Total			Insurance			Reinsurance			Total
Gross premiums written	$	675,430		$	284,532		$	959,962		$	606,704		$	329,879		$	936,583
Net premiums written	433,131			162,300			595,431			381,118			296,099			677,217
Net premiums earned	444,691			489,724			934,415			444,550			474,791			919,341
Other insurance related income	39			5,905			5,944			542			616			1,158
Net losses and loss expenses	(273,226		)	(259,102		)	(532,328		)	(283,272		)	(277,115		)	(560,387		)
Acquisition costs	(61,755		)	(128,055		)	(189,810		)	(69,118		)	(113,626		)	(182,744		)
General and administrative expenses	(84,588		)	(29,635		)	(114,223		)	(85,814		)	(35,309		)	(121,123		)
Underwriting income	$	25,161		$	78,837		103,998			$	6,888		$	49,357		56,245
Corporate expenses							(28,683		)							(23,604		)
Net investment income							116,923									45,685
Net realized investment gains (losses)							5,205									(69,957		)
Foreign exchange gains							13,795									28,088
Interest expense and financing costs							(12,839		)							(12,918		)
Termination fee received							—									280,000
Reorganization and related expenses							—									(45,867		)
Income before income taxes and interest in income (loss) of equity method investments							$	198,399								$	257,672
Net loss and loss expense ratio	61.4		%	52.9		%	57.0		%	63.7		%	58.4		%	61.0		%
Acquisition cost ratio	13.9		%	26.1		%	20.3		%	15.5		%	23.9		%	19.9		%
General and administrative expense ratio	19.1		%	6.1		%	15.3		%	19.4		%	7.4		%	15.7		%
Combined ratio	94.4		%	85.1		%	92.6		%	98.6		%	89.7		%	96.6		%
Goodwill and intangible assets	$	85,501		$	—		$	85,501		$	87,329		$	—		$	87,329

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AXIS CAPITAL HOLDINGS LIMITED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

2. SEGMENT INFORMATION (CONTINUED)

	2016									2015
Nine months ended and at September 30,	Insurance			Reinsurance			Total			Insurance			Reinsurance			Total
Gross premiums written	$	2,112,796		$	2,126,762		$	4,239,558		$	1,970,554		$	1,833,374		$	3,803,928
Net premiums written	1,433,058			1,855,529			3,288,587			1,352,122			1,727,185			3,079,307
Net premiums earned	1,322,649			1,461,097			2,783,746			1,344,339			1,420,266			2,764,605
Other insurance related income (loss)	(57		)	4,907			4,850			811			11,508			12,319
Net losses and loss expenses	(853,771		)	(809,813		)	(1,663,584		)	(866,580		)	(786,288		)	(1,652,868		)
Acquisition costs	(184,982		)	(374,588		)	(559,570		)	(200,493		)	(337,056		)	(537,549		)
General and administrative expenses	(252,652		)	(99,980		)	(352,632		)	(261,924		)	(110,701		)	(372,625		)
Underwriting income	$	31,187		$	181,623		212,810			$	16,153		$	197,729		213,882
Corporate expenses							(86,922		)							(83,826		)
Net investment income							257,818									226,336
Net realized investment losses							(40,295		)							(123,618		)
Foreign exchange gains							69,781									69,200
Interest expense and financing costs							(38,586		)							(38,114		)
Termination fee received							—									280,000
Reorganization and related expenses							—									(45,867		)
Income before income taxes and interest in income (loss) of equity method investments							$	374,606								$	497,993
Net loss and loss expense ratio	64.6		%	55.4		%	59.8		%	64.5		%	55.4		%	59.8		%
Acquisition cost ratio	14.0		%	25.6		%	20.1		%	14.9		%	23.7		%	19.4		%
General and administrative expense ratio	19.0		%	6.9		%	15.8		%	19.5		%	7.8		%	16.5		%
Combined ratio	97.6		%	87.9		%	95.7		%	98.9		%	86.9		%	95.7		%
Goodwill and intangible assets	$	85,501		$	—		$	85,501		$	87,329		$	—		$	87,329

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

3. INVESTMENTS

a)     Fixed Maturities and Equities

The amortized cost or cost and fair values of our fixed maturities and equities were as follows:

	Amortized Cost or Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value		Non-credit OTTI in AOCI(5)
At September 30, 2016
Fixed maturities
U.S. government and agency	$	1,542,943	$	22,349	$	(2,415	)	$	1,562,877	$	—
Non-U.S. government	620,601		4,799		(43,344		)	582,056		—
Corporate debt	4,516,290		87,184		(34,974		)	4,568,500		—
Agency RMBS(1)	2,473,832		49,661		(762		)	2,522,731		—
CMBS(2)	877,732		18,546		(2,003		)	894,275		—
Non-Agency RMBS	71,842		1,636		(1,648		)	71,830		(870		)
ABS(3)	1,234,292		4,028		(2,724		)	1,235,596		—
Municipals(4)	124,867		4,215		(87		)	128,995		—
Total fixed maturities	$	11,462,399	$	192,418	$	(87,957	)	$	11,566,860	$	(870	)
Equity securities
Common stocks	$	379	$	38	$	(348	)	$	69
Exchange-traded funds	463,655		41,611		(1,060		)	504,206
Bond mutual funds	136,570		3,499		—			140,069
Total equity securities	$	600,604	$	45,148	$	(1,408	)	$	644,344
At December 31, 2015
Fixed maturities
U.S. government and agency	$	1,673,617	$	1,545	$	(23,213	)	$	1,651,949	$	—
Non-U.S. government	809,025		2,312		(72,332		)	739,005		—
Corporate debt	4,442,315		16,740		(96,286		)	4,362,769		—
Agency RMBS(1)	2,236,138		22,773		(9,675		)	2,249,236		—
CMBS(2)	1,088,595		3,885		(9,182		)	1,083,298		—
Non-Agency RMBS	99,989		1,992		(973		)	101,008		(875		)
ABS(3)	1,387,919		952		(17,601		)	1,371,270		—
Municipals(4)	160,041		2,319		(1,146		)	161,214		—
Total fixed maturities	$	11,897,639	$	52,518	$	(230,408	)	$	11,719,749	$	(875	)
Equity securities
Common stocks	$	—	$	—	$	—		$	—
Exchange-traded funds	447,524		31,211		(4,762		)	473,973
Bond mutual funds	128,252		—		(4,227		)	124,025
Total equity securities	$	575,776	$	31,211	$	(8,989	)	$	597,998

(1) Residential mortgage-backed securities (RMBS) originated by U.S. agencies.

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

(3) Asset-backed securities (ABS) include debt tranched securities collateralized primarily by auto loans, student loans, credit cards, and other asset types. This asset class also includes collateralized loan obligations (CLOs) and collateralized debt obligations (CDOs).

(4) Municipals include bonds issued by states, municipalities and political subdivisions.

(5) Represents the non-credit component of the other-than-temporary impairment (OTTI) losses, adjusted for subsequent sales, maturities and redemptions. It does not include the change in fair value subsequent to the impairment measurement date.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

3. INVESTMENTS (CONTINUED)

In the normal course of investing activities, we actively manage allocations to non-controlling tranches of structured securities (variable interests) issued by VIEs. These structured securities include RMBS, CMBS and ABS and are included in the above table. Additionally, within our other investments portfolio, we also invest in limited partnerships (hedge funds, direct lending funds, real estate funds and private equity funds) and CLO equity tranched securities, which are all variable interests issued by VIEs (see Note 3(c)). For these variable interests, we do not have the power to direct the activities that are most significant to the economic performance of the VIEs therefore we are not the primary beneficiary of any of these VIEs. Our maximum exposure to loss on these interests is limited to the amount of our investment. We have not provided financial or other support with respect to these structured securities other than our original investment.

Contractual Maturities

The contractual maturities of fixed maturities are shown below. Expected maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties.

	Amortized Cost		Fair Value		% of Total Fair Value
At September 30, 2016
Maturity
Due in one year or less	$	363,821	$	356,706	3.0	%
Due after one year through five years	3,809,515		3,801,104		32.9	%
Due after five years through ten years	2,286,970		2,330,895		20.2	%
Due after ten years	344,395		353,723		3.1	%
	6,804,701		6,842,428		59.2	%
Agency RMBS	2,473,832		2,522,731		21.8	%
CMBS	877,732		894,275		7.7	%
Non-Agency RMBS	71,842		71,830		0.6	%
ABS	1,234,292		1,235,596		10.7	%
Total	$	11,462,399	$	11,566,860	100.0	%
At December 31, 2015
Maturity
Due in one year or less	$	291,368	$	289,571	2.5	%
Due after one year through five years	4,217,515		4,142,802		35.3	%
Due after five years through ten years	2,263,684		2,181,525		18.6	%
Due after ten years	312,431		301,039		2.6	%
	7,084,998		6,914,937		59.0	%
Agency RMBS	2,236,138		2,249,236		19.2	%
CMBS	1,088,595		1,083,298		9.2	%
Non-Agency RMBS	99,989		101,008		0.9	%
ABS	1,387,919		1,371,270		11.7	%
Total	$	11,897,639	$	11,719,749	100.0	%

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AXIS CAPITAL HOLDINGS LIMITED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

3. INVESTMENTS (CONTINUED)

Gross Unrealized Losses

The following table summarizes fixed maturities and equities in an unrealized loss position and the aggregate fair value and gross unrealized loss by length of time the security has continuously been in an unrealized loss position:

	12 months or greater					Less than 12 months					Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
At September 30, 2016
Fixed maturities
U.S. government and agency	$	55,000	$	(1,635	)	$	422,681	$	(780	)	$	477,681	$	(2,415	)
Non-U.S. government	104,441		(24,061		)	254,694		(19,283		)	359,135		(43,344		)
Corporate debt	285,848		(26,202		)	639,722		(8,772		)	925,570		(34,974		)
Agency RMBS	80,375		(556		)	121,203		(206		)	201,578		(762		)
CMBS	99,004		(1,260		)	173,795		(743		)	272,799		(2,003		)
Non-Agency RMBS	10,184		(1,306		)	5,187		(342		)	15,371		(1,648		)
ABS	518,647		(2,253		)	50,402		(471		)	569,049		(2,724		)
Municipals	2,384		(18		)	15,567		(69		)	17,951		(87		)
Total fixed maturities	$	1,155,883	$	(57,291	)	$	1,683,251	$	(30,666	)	$	2,839,134	$	(87,957	)
Equity securities
Common stocks	$	—	$	—		$	31	$	(348	)	$	31	$	(348	)
Exchange-traded funds	6,153		(425		)	39,097		(635		)	45,250		(1,060		)
Bond mutual funds	—		—			—		—			—		—
Total equity securities	$	6,153	$	(425	)	$	39,128	$	(983	)	$	45,281	$	(1,408	)
At December 31, 2015
Fixed maturities
U.S. government and agency	$	84,179	$	(7,622	)	$	1,474,202	$	(15,591	)	$	1,558,381	$	(23,213	)
Non-U.S. government	170,269		(50,841		)	317,693		(21,491		)	487,962		(72,332		)
Corporate debt	340,831		(33,441		)	2,845,375		(62,845		)	3,186,206		(96,286		)
Agency RMBS	64,792		(1,609		)	1,073,566		(8,066		)	1,138,358		(9,675		)
CMBS	75,627		(1,579		)	659,480		(7,603		)	735,107		(9,182		)
Non-Agency RMBS	5,283		(210		)	43,199		(763		)	48,482		(973		)
ABS	562,599		(11,158		)	667,448		(6,443		)	1,230,047		(17,601		)
Municipals	14,214		(310		)	64,104		(836		)	78,318		(1,146		)
Total fixed maturities	$	1,317,794	$	(106,770	)	$	7,145,067	$	(123,638	)	$	8,462,861	$	(230,408	)
Equity securities
Common stocks	$	—	$	—		$	—	$	—		$	—	$	—
Exchange-traded funds	2,331		(313		)	110,972		(4,449		)	113,303		(4,762		)
Bond mutual funds	—		—			124,025		(4,227		)	124,025		(4,227		)
Total equity securities	$	2,331	$	(313	)	$	234,997	$	(8,676	)	$	237,328	$	(8,989	)

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

3. INVESTMENTS (CONTINUED)

Fixed Maturities

At September 30,2016, 935 fixed maturities (2015: 2,314) were in an unrealized loss position of $88 million (2015: $230 million), of which $13 million (2015: $39 million) was related to securities below investment grade or not rated.

At September 30,2016, 399 (2015: 383) securities had been in a continuous unrealized loss position for 12 months or greater and had a fair value of $1,156 million (2015: $1,318 million). Following our credit impairment review, we concluded that these securities as well as the remaining securities in an unrealized loss position in the above table were temporarily impaired at September 30,2016, and were expected to recover in value as the securities approach maturity. Further, at September 30,2016, we did not intend to sell these securities in an unrealized loss position and it is more likely than not that we will not be required to sell these securities before the anticipated recovery of their amortized costs.

Equity Securities

At September 30,2016, 20 securities (2015: 35) were in an unrealized loss position of $1 million (2015: $9 million).

At September 30,2016, 5 securities (2015: 1) were in a continuous unrealized loss position for 12 months or greater. Based on our impairment review process and our ability and intent to hold these securities for a reasonable period of time sufficient for a full recovery, we concluded that the above equities in an unrealized loss position were temporarily impaired at September 30,2016.

b) Mortgage Loans

The following table provides a breakdown of our mortgage loans held-for-investment:

	September 30, 2016				December 31, 2015
	Carrying Value		% of Total		Carrying Value		% of Total
Mortgage Loans held-for-investment:
Commercial	$	332,753	100	%	$	206,277	100	%
	332,753		100	%	206,277		100	%
Valuation allowances	—		—	%	—		—	%
Total Mortgage Loans held-for-investment	$	332,753	100	%	$	206,277	100	%

For commercial mortgage loans, the primary credit quality indicator is the debt service coverage ratio (which compares a property’s net operating income to amounts needed to service the principal and interest due under the loan, generally, the lower the debt service coverage ratio, the higher the risk of experiencing a credit loss) and the loan-to-value ratio (loan-to-value ratios compare the unpaid principal balance of the loan to the estimated fair value of the underlying collateral, generally, the higher the loan-to-value ratio, the higher the risk of experiencing a credit loss). The debt service coverage ratio and loan-to-value ratio, as well as the values utilized in calculating these ratios, are updated annually, on a rolling basis.

We have a high quality mortgage portfolio with debt service coverage ratios in excess of 1.1x and loan-to-value ratios of less than 70%; there are no credit losses associated with the commercial mortgage loans that we hold at September 30,2016.

There are no past due amounts at September 30,2016.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

3. INVESTMENTS (CONTINUED)

c) Other Investments

The following table provides a breakdown of our investments in hedge funds, direct lending funds, private equity funds, real estate funds, CLO Equities and other privately held investments, together with additional information relating to the liquidity of each category:

	Fair Value				Redemption Frequency (if currently eligible)	Redemption     Notice Period
At September 30, 2016
Long/short equity funds	$	139,460	16	%	Quarterly, Semi-annually, Annually	45-60 days
Multi-strategy funds	281,153		33	%	Quarterly, Semi-annually	60-95 days
Event-driven funds	94,012		11	%	Quarterly, Annually	45-60 days
Leveraged bank loan funds	—		—	%	n/a	n/a
Direct lending funds	125,002		15	%	n/a	n/a
Private equity funds	89,170		11	%	n/a	n/a
Real estate funds	11,782		1	%	n/a	n/a
CLO - Equities	63,783		8	%	n/a	n/a
Other privately held investments	42,900		5	%	n/a	n/a
Total other investments	$	847,262	100	%
At December 31, 2015
Long/short equity funds	$	154,348	19	%	Quarterly, Semi-annually, Annually	45-60 days
Multi-strategy funds	355,073		43	%	Quarterly, Semi-annually	60-95 days
Event-driven funds	147,287		18	%	Quarterly, Annually	45-60 days
Leveraged bank loan funds	65		—	%	n/a	n/a
Direct lending funds	90,120		11	%	n/a	n/a
Private equity funds	—		—	%	n/a	n/a
Real estate funds	4,929		1	%	n/a	n/a
CLO - Equities	64,934		8	%	n/a	n/a
Other privately held investments	—		—	%	n/a	n/a
Total other investments	$	816,756	100	%

n/a -notapplicable

The investment strategies for the above funds are as follows:

• Long/short equity funds: Seek to achieve attractive returns primarily by executing an equity trading strategy involving both long and short investments in publicly-traded equities.

• Multi-strategy funds: Seek to achieve above-market returns by pursuing multiple investment strategies to diversify risks and reduce volatility. This category includes funds of hedge funds which invest in a large pool of hedge funds across a diversified range of hedge fund strategies.

• Event-driven funds: Seek to achieve attractive returns by exploiting situations where announced or anticipated events create opportunities.

• Leveraged bank loan funds: Seek to achieve attractive returns by investing primarily in bank loan collateral that has limited interest rate risk exposure.

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3. INVESTMENTS (CONTINUED)

• Direct lending funds: Seek to achieve attractive risk-adjusted returns, including current income generation, by investing in funds which provide financing directly to borrowers.

• Real estate funds: Seek to achieve attractive risk-adjusted returns by making and managing investments in real estate and real estate securities and businesses.

• Private equity funds: Seek to achieve attractive risk-adjusted returns by investing in private transactions over the course of several years.

Two common redemption restrictions which may impact our ability to redeem our hedge funds are gates and lockups. A gate is a suspension of redemptions which may be implemented by the general partner or investment manager of the fund in order to defer, in whole or in part, the redemption request in the event the aggregate amount of redemption requests exceeds a predetermined percentage of the fund's net assets which may otherwise hinder the general partner or investment manager's ability to liquidate holdings in an orderly fashion in order to generate the cash necessary to fund extraordinarily large redemption payouts. A lockup period is the initial amount of time an investor is contractually required to hold the security before having the ability to redeem. During 2016 and 2015, neither of these restrictions impacted our redemption requests. At September 30,2016, $87 million (2015: $66 million), representing 17% (2015: 10%) of our total hedge funds, relate to holdings where we are still within the lockup period. The expiration of these lockup periods range from September 2016 to March 2019. 

At September 30,2016, we have $189 million (2015: $222 million) of unfunded commitments within our other investments portfolio relating to our future investments in direct lending funds. Once the full amount of committed capital has been called by the General Partner of each of these funds, the assets will not be fully returned until the completion of the fund's investment term. These funds have investment terms ranging from 5-10 years and the General Partners of certain funds have the option to extend the term by up to three years.

At September 30,2016, we have $12 million (2015: $12 million) of unfunded commitments as a limited partner in a multi-strategy hedge fund. Once the full amount of committed capital has been called by the General Partner, the assets will not be fully returned until the completion of the fund's investment term which ends in March, 2019. The General Partner then has the option to extend the term by up to three years.

At September 30,2016, we have $90 million (2015: $95 million) of unfunded commitments as a limited partner in a fund which invests in real estate and real estate securities and businesses. The fund is subject to a three year commitment period and a total fund life of eight years during which time we are not eligible to redeem our investment.

During 2016, we made a $135 million commitment as a limited partner in a private equity fund. At September 30,2016, $40 million of our commitment remains unfunded and the current fair value of the funds called to date are included in the private equity funds line of the table above. The fund invests in underlying private equity funds and the life of the fund is subject to the dissolution of the underlying funds. We expect the overall holding period to be over ten years.

During 2015, we made a $50 million commitment as a limited partner of a bank revolver opportunity fund. The fund is subject to an investment term of seven years and the General Partners have the option to extend the term by up to two years. At September 30,2016, this commitment remains unfunded. It is not anticipated that the full amount of this fund will be drawn.

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AXIS CAPITAL HOLDINGS LIMITED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

3. INVESTMENTS (CONTINUED)

d) Equity Method Investments

During 2016, we paid $104 million including direct transaction costs to acquire 18% of the common equity of Harrington Reinsurance Holdings Limited ("Harrington"), the parent company of Harrington Re Ltd. ("Harrington Re"), an independent reinsurance company jointly sponsored by AXIS Capital and The Blackstone Group L.P. ("Blackstone"). Through long-term service agreements, AXIS Capital will serve as Harrington Re's reinsurance underwriting manager and Blackstone will serve as exclusive investment management service provider. As an investor, we expect to benefit from underwriting profit generated by Harrington Re and the income and capital appreciation Blackstone seeks to deliver through its investment management services. In addition, we have entered into an arrangement with Blackstone under which underwriting and investment related fees will be shared equally. Harrington is not a variable interest entity and given that we exercise significant influence over this investee we account for our ownership in Harrington under the equity method of accounting. The Company's proportionate share of the underlying equity in net assets resulted in a basis difference of $5 million which represents initial transactions costs.

The Company also has investments in other equity method investments with a carrying value of $9 million.

e) Net Investment Income

Net investment income was derived from the following sources:

	Three months ended September 30,						Nine months ended September 30,
	2016			2015			2016			2015
Fixed maturities	$	75,827		$	75,980		$	229,423		$	220,066
Other investments	38,248			(27,421		)	25,770			17,616
Equity securities	4,633			3,445			12,843			7,795
Mortgage loans	2,191			482			5,683			776
Cash and cash equivalents	3,768			993			7,071			3,770
Short-term investments	337			83			708			277
Gross investment income	125,004			53,562			281,498			250,300
Investment expenses	(8,081		)	(7,877		)	(23,680		)	(23,964		)
Net investment income	$	116,923		$	45,685		$	257,818		$	226,336

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

3. INVESTMENTS (CONTINUED)

f) Net Realized Investment Gains (Losses)

The following table provides an analysis of net realized investment gains (losses):

	Three months ended September 30,						Nine months ended September 30,
	2016			2015			2016			2015
Gross realized gains
Fixed maturities and short-term investments	$	26,211		$	12,126		$	67,833		$	44,853
Equities	5,570			232			18,804			447
Gross realized gains	31,781			12,358			86,637			45,300
Gross realized losses
Fixed maturities and short-term investments	(21,908		)	(54,867		)	(90,702		)	(111,432		)
Equities	(576		)	(1,559		)	(15,923		)	(1,952		)
Gross realized losses	(22,484		)	(56,426		)	(106,625		)	(113,384		)
Net OTTI recognized in earnings	(4,247		)	(32,301		)	(20,346		)	(62,762		)
Change in fair value of investment derivatives(1)	155			6,412			39			7,228
Net realized investment gains (losses)	$	5,205		$	(69,957	)	$	(40,295	)	$	(123,618	)

(1) Refer to Note 5 – Derivative Instruments

The following table summarizes the OTTI recognized in earnings by asset class:

	Three months ended September 30,				Nine months ended September 30,
	2016		2015		2016		2015
Fixed maturities:
Non-U.S. government	$	2,456	$	1,295	$	2,953	$	2,717
Corporate debt	1,791		20,587		14,833		38,396
Non-Agency RMBS	—		—		—		4
ABS	—		84		—		124
	4,247		21,966		17,786		41,241
Equity Securities
Exchange-traded funds	—		10,335		2,560		10,335
Bond mutual funds	—		—		—		11,186
	—		10,335		2,560		21,521
Total OTTI recognized in earnings	$	4,247	$	32,301	$	20,346	$	62,762

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

3. INVESTMENTS (CONTINUED)

The following table provides a roll forward of the credit losses, before income taxes, for which a portion of the OTTI was recognized in AOCI:

	Three months ended September 30,						Nine months ended September 30,
	2016			2015			2016			2015
Balance at beginning of period	$	1,513		$	1,564		$	1,506		$	1,531
Credit impairments recognized on securities not previously impaired	—			—			—			—
Additional credit impairments recognized on securities previously impaired	—			—			7			33
Change in timing of future cash flows on securities previously impaired	—			—			—			—
Intent to sell of securities previously impaired	—			—			—			—
Securities sold/redeemed/matured	(33		)	(43		)	(33		)	(43		)
Balance at end of period	$	1,480		$	1,521		$	1,480		$	1,521

g) Reverse Repurchase Agreements

At September 30,2016, we held $160 million (December 31,2015: $30 million) of reverse repurchase agreements. These loans are fully collateralized, are generally outstanding for a short period of time and are presented on a gross basis as part of cash and cash equivalents on our consolidated balance sheet. The required collateral for these loans is either cash or U.S. Treasuries at a minimum rate of 102% of the loan principal. Upon maturity, we receive principal and interest income. We monitor the estimated fair value of the securities loaned and borrowed on a daily basis with additional collateral obtained as necessary throughout the duration of the transaction.

Fair Value Hierarchy

Fair value is defined as the price to sell an asset or transfer a liability (i.e. the “exit price”) in an orderly transaction between market participants. We use a fair value hierarchy that gives the highest priority to quoted prices in active markets and the lowest priority to unobservable data. The level in the hierarchy within which a given fair value measurement falls is determined based on the lowest level input that is significant to the measurement. The hierarchy is broken down into three levels as follows:

• Level 1 - Valuations based on unadjusted quoted prices in active markets for identical assets or liabilities that we have the ability to access.

• Level 2 - Valuations based on quoted prices in active markets for similar assets or liabilities, quoted prices for identical assets or liabilities in inactive markets, or for which significant inputs are observable (e.g. interest rates, yield curves, prepayment speeds, default rates, loss severities, etc.) or can be corroborated by observable market data.

• Level 3 - Valuations based on inputs that are unobservable and significant to the overall fair value measurement. The unobservable inputs reflect our own judgments about assumptions that market participants might use.

The availability of observable inputs can vary from financial instrument to financial instrument and is affected by a wide variety of factors including, for example, the type of financial instrument, whether the financial instrument is new and not yet established in the marketplace, and other characteristics particular to the transaction. To the extent that valuation is based on models or inputs that are less observable or unobservable in the market, the determination of fair value requires significantly more judgment.

Accordingly, the degree of judgment exercised by management in determining fair value is greatest for instruments categorized in Level 3. In periods of market dislocation, the observability of prices and inputs may be reduced for many instruments. This may lead us to change the selection of our valuation technique (from market to cash flow approach) or may cause us to use multiple valuation techniques to estimate the fair value of a financial instrument. This circumstance could cause an instrument to be reclassified between levels within the fair value hierarchy.

We used the following valuation techniques including significant inputs and assumptions in estimating the fair value of our financial instruments as well as the general classification of such financial instruments pursuant to the above fair value hierarchy.

Fixed Maturities

At each valuation date, we use the market approach valuation technique to estimate the fair value of our fixed maturities portfolio, when possible. This market approach includes, but is not limited to, prices obtained from third party pricing services for identical or comparable securities and the use of “pricing matrix models” using observable market inputs such as yield curves, credit risks and spreads, measures of volatility, and prepayment speeds. Pricing from third party pricing services is sourced from multiple vendors, when available, and we maintain a vendor hierarchy by asset type based on historical pricing experience and vendor expertise. When prices are unavailable from pricing services, we obtain non-binding quotes from broker-dealers who are active in the corresponding markets.

The valuation techniques including significant inputs generally used to determine the fair value of our fixed maturities by asset class as well as the classification in the fair value hierarchy are described in detail below.

U.S. government and agency

U.S. government and agency securities consist primarily of bonds issued by the U.S. Treasury and mortgage pass-through agencies such as the Federal National Mortgage Association, the Federal Home Loan Mortgage Corporation and the Government National Mortgage Association. As the fair values of U.S. Treasury securities are based on unadjusted market prices in active markets, these securities are classified within Level 1. The fair values of U.S. government agency securities are priced using the spread above the risk-free yield curve. As the yields for the risk-free yield curve and the spreads for these securities are observable market inputs, the fair values of U.S. government agency securities are classified within Level 2.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

4. FAIR VALUE MEASUREMENTS

Non-U.S. government

Non-U.S. government securities comprise bonds issued by non-U.S. governments and their agencies along with supranational organizations (collectively also known as sovereign debt securities). The fair values of these securities are based on prices obtained from international indices or a valuation model which uses inputs including interest rate yield curves, cross-currency basis index spreads, and country credit spreads for structures similar to the sovereign bond in terms of issuer, maturity and seniority. As the significant inputs are observable market inputs, the fair value of non-U.S. government securities are classified within Level 2.

Corporate debt

Corporate debt securities consist primarily of investment-grade debt of a wide variety of corporate issuers and industries. The fair values of these securities are generally determined using the spread above the risk-free yield curve. These spreads are generally obtained from the new issue market, secondary trading and broker-dealer quotes. As these spreads and the yields for the risk-free yield curve are observable market inputs, the fair values of corporate debt securities are classified within Level 2. Where pricing is unavailable from pricing services, we obtain non-binding quotes from broker-dealers to estimate fair value. This is generally the case when there is a low volume of trading activity and current transactions are not orderly. In this event, securities are classified within Level 3.

Agency RMBS

Agency RMBS securities consist of bonds issued by the Federal National Mortgage Association, the Federal Home Loan Mortgage Corporation and the Government National Mortgage Association. The fair values of these securities are priced using a mortgage pool specific model which uses daily inputs from the active to be announced market and the spread associated with each mortgage pool based on vintage. As the significant inputs are observable market inputs, the fair values of Agency RMBS securities are classified within Level 2.

CMBS

CMBS include mostly investment-grade bonds originated by non-agencies. The fair values of these securities are determined using a pricing model which uses dealer quotes and other available trade information along with security level characteristics to determine deal specific spreads. As the significant inputs are observable market inputs, the fair values of CMBS securities are classified within Level 2. Where pricing is unavailable from pricing services, we obtain non-binding quotes from broker-dealers to estimate fair value. This is generally the case when there is a low volume of trading activity and current transactions are not orderly. In this event, securities are classified within Level 3.

Non-Agency RMBS

Non-Agency RMBS include mostly investment-grade bonds originated by non-agencies. The fair values of these securities are determined using an option adjusted spread model or other relevant models, which use inputs including available trade information or broker quotes, prepayment and default projections based on historical statistics of the underlying collateral and current market data. As the significant inputs are observable market inputs, the fair values of Non-Agency RMBS securities are classified within Level 2.

ABS

ABS include mostly investment-grade bonds backed by pools of loans with a variety of underlying collateral, including automobile loan receivables, student loans, credit card receivables, and CLO Debt originated by a variety of financial institutions. The fair values of ABS are priced using a model which uses prepayment speeds and spreads sourced primarily from the new issue market. As the significant inputs used to price ABS are observable market inputs, the fair values of ABS are classified within Level 2. Where pricing is unavailable from pricing services, we obtain non-binding quotes from broker-dealers to estimate fair value. This is generally the case when there is a low volume of trading activity and current transactions are not orderly. In this event, securities are classified within Level 3.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

4. FAIR VALUE MEASUREMENTS (CONTINUED)

Municipals

Municipals comprise revenue and general obligation bonds issued by U.S. domiciled state and municipal entities. The fair values of these securities are determined using spreads obtained from broker-dealers, trade prices and the new issue market. As the significant inputs used to price the municipals are observable market inputs, municipals are classified within Level 2.

Equity Securities

Equity securities include common stocks, exchange-traded funds and bond mutual funds. As the fair values of common stocks and exchange-traded funds are based on unadjusted quoted market prices in active markets, these securities are classified within Level 1.

As bond mutual funds have daily liquidity with redemption based on the NAV of the funds, the fair values of these securities are classified within Level 2.

Other Investments

At September 30, 2016, our investments in CLO - Equities were classified within Level 3 as we estimated the fair value for these securities using an income approach valuation technique (discounted cash flow model) due to the lack of observable and relevant trades in the secondary markets.

Other privately held securities include convertible preferred shares, convertible notes and notes payable. In the reporting period of investment, the cost of these investments approximates fair value. In subsequent measurement periods, a discounted cash flow model is used to determine the fair value of these securities. These securities are classified within Level 3.

Short-Term Investments

Short-term investments primarily comprise highly liquid securities with maturities greater than three months but less than one year from the date of purchase. These securities are classified within Level 2 because these securities are typically not actively traded due to their approaching maturity and, as such, their amortized cost approximates fair value.

Derivative Instruments

Our foreign currency forward contracts, interest rate swaps and commodity contracts are customized to our economic hedging strategies and trade in the over-the-counter derivative market. We use the market approach valuation technique to estimate the fair value for these derivatives based on significant observable market inputs from third party pricing vendors, non-binding broker-dealer quotes and/or recent trading activity. Accordingly, we classified these derivatives within Level 2.

We also participate in non-exchange traded derivative-based risk management products addressing weather risks. We use observable market inputs and unobservable inputs in combination with industry or internally-developed valuation and forecasting techniques to determine fair value. We classify these instruments within Level 3.

Insurance-linked Securities

Insurance-linked securities comprise an investment in a catastrophe bond. We obtain non-binding quotes from broker-dealers to estimate fair value. This is generally the case when there is a low volume of trading activity and current transactions are not orderly. These securities are classified within Level 3.

Cash Settled Awards

Cash settled awards comprise restricted stock units that form part of our compensation program. Although the fair value of these awards is determined using observable quoted market prices in active markets, the stock units themselves are not actively traded. Accordingly, we have classified these liabilities within Level 2.

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AXIS CAPITAL HOLDINGS LIMITED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

4. FAIR VALUE MEASUREMENTS (CONTINUED)

The tables below present the financial instruments measured at fair value on a recurring basis for the periods indicated:

	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Fair value based on NAV practical expedient		Total Fair Value
At September 30, 2016
Assets
Fixed maturities
U.S. government and agency	$	1,522,246	$	40,631	$	—	$	—	$	1,562,877
Non-U.S. government	—		582,056		—		—		582,056
Corporate debt	—		4,499,408		69,092		—		4,568,500
Agency RMBS	—		2,522,731		—		—		2,522,731
CMBS	—		885,355		8,920		—		894,275
Non-Agency RMBS	—		71,830		—		—		71,830
ABS	—		1,235,596		—		—		1,235,596
Municipals	—		128,995		—		—		128,995
	1,522,246		9,966,602		78,012		—		11,566,860
Equity securities
Common stocks	69		—		—		—		69
Exchange-traded funds	504,206		—		—		—		504,206
Bond mutual funds	—		140,069		—		—		140,069
	504,275		140,069		—		—		644,344
Other investments
Hedge funds	—		—		—		514,625		514,625
Direct lending funds	—		—		—		125,002		125,002
Private equity funds	—		—		—		89,170		89,170
Real estate funds	—		—		—		11,782		11,782
Other privately held investments	—		—		42,900		—		42,900
CLO - Equities	—		—		63,783		—		63,783
	—		—		106,683		740,579		847,262
Short-term investments	—		39,877		—		—		39,877
Other assets
Derivative instruments (see Note 5)	—		4,469		2,488		—		6,957
Insurance-linked securities	—		—		25,283		—		25,283
Total Assets	$	2,026,521	$	10,151,017	$	212,466	$	740,579	$	13,130,583
Liabilities
Derivative instruments (see Note 5)	$	—	$	4,411	$	8,184	$	—	$	12,595
Cash settled awards (see Note 7)	—		34,288		—		—		34,288
Total Liabilities	$	—	$	38,699	$	8,184	$	—	$	46,883

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

4. FAIR VALUE MEASUREMENTS (CONTINUED)

	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Fair value based on NAV practical expedient		Total Fair Value
At December 31, 2015
Assets
Fixed maturities
U.S. government and agency	$	1,632,355	$	19,594	$	—	$	—	$	1,651,949
Non-U.S. government	—		739,005		—		—		739,005
Corporate debt	—		4,324,251		38,518		—		4,362,769
Agency RMBS	—		2,249,236		—		—		2,249,236
CMBS	—		1,072,376		10,922		—		1,083,298
Non-Agency RMBS	—		101,008		—		—		101,008
ABS	—		1,371,270		—		—		1,371,270
Municipals	—		161,214		—		—		161,214
	1,632,355		10,037,954		49,440		—		11,719,749
Equity securities
Common stocks	—		—		—		—		—
Exchange-traded funds	473,973		—		—		—		473,973
Bond mutual funds	—		124,025		—		—		124,025
	473,973		124,025		—		—		597,998
Other investments
Hedge funds	—		—		—		656,773		656,773
Direct lending funds	—		—		—		90,120		90,120
Private equity funds	—		—		—		—		—
Real estate funds	—		—		—		4,929		4,929
Other privately held investments	—		—		—		—		—
CLO - Equities	—		—		27,257		37,677		64,934
	—		—		27,257		789,499		816,756
Short-term investments	—		34,406		—		—		34,406
Other assets
Derivative instruments (see Note 5)	—		2,072		4,395		—		6,467
Insurance-linked securities	—		—		24,925		—		24,925
Total Assets	$	2,106,328	$	10,198,457	$	106,017	$	789,499	$	13,200,301
Liabilities
Derivative instruments (see Note 5)	$	—	$	7,692	$	10,937	$	—	$	18,629
Cash settled awards (see Note 7)	—		33,215		—		—		33,215
Total Liabilities	$	—	$	40,907	$	10,937	$	—	$	51,844

During 2016 and 2015, there were no transfers between Levels 1 and 2.

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AXIS CAPITAL HOLDINGS LIMITED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

4. FAIR VALUE MEASUREMENTS (CONTINUED)

Except certain fixed maturities and insurance-linked securities priced using broker-dealer quotes (underlying inputs are not available), the following table quantifies the significant unobservable inputs we have used in estimating fair value at September 30,2016 for our investments classified as Level 3 in the fair value hierarchy.

	Fair Value			Valuation Technique	Unobservable Input	Range	Weighted Average
Other investments - CLO - Equities	$	35,594		Discounted cash flow	Default rates	4.0%	4.0%
					Loss severity rate	35.0% - 53.5%	35.4%
					Collateral spreads	3.6% - 4.0%	4.0%
					Estimated maturity dates	2 - 6 years	6 years
	28,189			Liquidation value	Fair value of collateral	100%	100%
					Discount margin	0.1% - 19.1%	2.4%
Other investments - Other privately held investments	42,900			Discounted cash flow	Discount rate	5.0% - 8.0%	7.2%
Derivatives - Weather derivatives, net	$	(5,696	)	Simulation model	Weather curve	1 - 2294(1)	n/a (2)
					Weather standard deviation	1 - 1029(1)	n/a (2)

(1) Measured in Heating Degree Days ("HDD") which is the number of degrees the daily temperature is below a reference temperature. The cumulative HDD for the duration of the derivatives contract is compared to the strike value to determine the necessary settlement.

(2) Due to the diversity of the portfolio, the range of unobservable inputs can be widespread; therefore, presentation of a weighted average is not useful. Weather parameters may include various temperature and/or precipitation measures that will naturally vary by geographic location of each counterparty's operations.

The CLO - Equities market continues to be mostly inactive with only a small number of transactions being observed and fewer still involving transactions in our CLO - Equities. Accordingly, we use models to estimate the fair value of our investments in CLO - Equities. Given that all of our direct investments in CLO - Equities are past their reinvestment period, there is uncertainty over the remaining time to maturity. As such our direct investments in CLO - Equities are valued at the lower of the liquidation value and fair value based on an internally developed discounted cash flow model.

The liquidation valuation is based on the fair value of the net underlying collateral which is determined by applying market discount margins by credit quality bucket. An increase (decrease) in the market discount margin would result in a decrease (increase) in value of our CLO - Equities. Regarding the discounted cash flow model, the default and loss severity rates are the most judgmental unobservable market inputs to which the valuation of CLO - Equities is most sensitive. A significant increase (decrease) in either of these significant inputs in isolation would result in lower (higher) fair value estimates for direct investments in our CLO - Equities and, in general, a change in default rate assumptions will be accompanied by a directionally similar change in loss severity rate assumptions. Collateral spreads and estimated maturity dates are less judgmental inputs as they are based on the historical average of actual spreads and the weighted average life of the current underlying portfolios, respectively. A significant increase (decrease) in either of these significant inputs in isolation would result in higher (lower) fair value estimates for direct investments in our CLO - Equities. In general, these inputs have no significant interrelationship with each other or with default and loss severity rates.

On a quarterly basis, our valuation process for CLO - Equities includes a review of the underlying collateral along with related discount margins by credit quality bucket used in the liquidation valuation and a review of the underlying cash flows and key assumptions used in the discounted cash flow model. We review and update the above significant unobservable inputs based on information obtained from secondary markets, including information received from the managers of our CLO - Equities portfolio.

In order to assess the reasonableness of the inputs we use in our models, we maintain an understanding of current market conditions, historical results, as well as emerging trends that may impact future cash flows. In addition,we update the assumptions we use in our models through regular communication with industry participants and ongoing monitoring of the deals in which we participate (e.g. default and loss severity rate trends).

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AXIS CAPITAL HOLDINGS LIMITED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

4. FAIR VALUE MEASUREMENTS (CONTINUED)

Other privately held securities are initially valued at cost which approximates fair value. In subsequent measurement periods, a discounted cash flow model is used to determine the fair value of these securities. These models include inputs specific to each investment. The inputs used in the fair value measurement include dividend or interest rates and a discount rate. The discount rate is judgmental and the most significant unobservable input used in the valuation of the other privately held securities. Significant increases (decreases) in this input in isolation could result in a significantly higher (lower) fair value measurement. In order to assess the reasonableness of the inputs we use in our models, we maintain an understanding of current market conditions, historical results, as well as investee specific information that may impact future cash flows.

Weather derivatives relate to non-exchange traded risk management products addressing weather risks. We use observable market inputs and unobservable inputs in combination with industry or internally-developed valuation and forecasting techniques to determine fair value. The models may reference market price information for similar instruments. The pricing models are internally reviewed by Risk Management personnel prior to implementation and are reviewed periodically thereafter.

Observable and unobservable inputs to these models vary by contract type but would typically include the following:

• Observable inputs: market prices for similar instruments, notional price, option strike price, term to expiry, contractual limits;

• Unobservable inputs: correlation; and

• Both observable and unobservable inputs: weather curves, weather standard deviation.

In general, weather curves are the most significant contributing input to fair value determination. Changes in this variable can result in higher or lower fair value depending on the underlying position. In addition, changes in any or all of the unobservable inputs identified above may contribute positively or negatively to overall portfolio value. The correlation input will quantify the interrelationship, if any, amongst the other variables.

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AXIS CAPITAL HOLDINGS LIMITED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

4. FAIR VALUE MEASUREMENTS (CONTINUED)

The following tables present changes in Level 3 for financial instruments measured at fair value on a recurring basis for the periods indicated:

	Opening Balance		Transfers into Level 3		Transfers out of Level 3			Included in earnings (1)			Included in OCI (2)			Purchases		Sales			Settlements/ Distributions			Closing Balance		Change in unrealized investment gain/(loss) (3)
Three months ended September 30, 2016
Fixed maturities
Corporate debt	$	62,022	$	—	$	—		$	(9	)	$	100		$	7,563	$	—		$	(584	)	$	69,092	$	—
CMBS	10,210		—		—			—			(48		)	—		—			(1,242		)	8,920		—
ABS	—		—		—			—			—			—		—			—			—		—
	72,232		—		—			(9		)	52			7,563		—			(1,826		)	78,012		—
Other investments
Other privately held investments	41,755		—		—			(355		)	—			1,500		—			—			42,900		(355		)
CLO - Equities	65,883		—		—			8,419			—			—		—			(10,519		)	63,783		8,419
	107,638		—		—			8,064			—			1,500		—			(10,519		)	106,683		8,064
Other assets
Derivative instruments	5		—		—			665			—			1,818		—			—			2,488		665
Insurance-linked securities	25,025		—		—			258			—			—		—			—			25,283		258
	25,030		—		—			923			—			1,818		—			—			27,771		923
Total assets	$	204,900	$	—	$	—		$	8,978		$	52		$	10,881	$	—		$	(12,345	)	$	212,466	$	8,987
Other liabilities
Derivative instruments	$	1,978	$	—	$	—		$	(169	)	$	—		$	6,384	$	—		$	(9	)	$	8,184	$	335
Total liabilities	$	1,978	$	—	$	—		$	(169	)	$	—		$	6,384	$	—		$	(9	)	$	8,184	$	335
Nine months ended September 30, 2016
Fixed maturities
Corporate debt	$	38,518	$	20,412	$	(1,955	)	$	(988	)	$	1,188		$	17,107	$	(4,015	)	$	(1,175	)	$	69,092	$	—
CMBS	10,922		—		—			—			(134		)	—		—			(1,868		)	8,920		—
ABS	—		—		—			—			—			—		—			—			—		—
	49,440		20,412		(1,955		)	(988		)	1,054			17,107		(4,015		)	(3,043		)	78,012		—
Other investments
Other privately held investments	—		—		—			(1,505		)	—			44,405		—			—			42,900		(1,505		)
CLO - Equities	27,257		36,378		—			17,431			—			—		—			(17,283		)	63,783		17,431
	27,257		36,378		—			15,926			—			44,405		—			(17,283		)	106,683		15,926
Other assets
Derivative instruments	4,395		—		—			3,255			—			3,623		—			(8,785		)	2,488		669
Insurance-linked securities	24,925		—		—			358			—			—		—			—			25,283		358
	29,320		—		—			3,613			—			3,623		—			(8,785		)	27,771		1,027
Total assets	$	106,017	$	56,790	$	(1,955	)	$	18,551		$	1,054		$	65,135	$	(4,015	)	$	(29,111	)	$	212,466	$	16,953
Other liabilities
Derivative instruments	$	10,937	$	—	$	—		$	2,445		$	—		$	7,189	$	—		$	(12,387	)	$	8,184	$	457
Total liabilities	$	10,937	$	—	$	—		$	2,445		$	—		$	7,189	$	—		$	(12,387	)	$	8,184	$	457

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AXIS CAPITAL HOLDINGS LIMITED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

4. FAIR VALUE MEASUREMENTS (CONTINUED)

	Opening Balance		Transfers into Level 3		Transfers out of Level 3			Included in earnings (1)			Included in OCI (2)			Purchases		Sales		Settlements/ Distributions			Closing Balance		Change in unrealized investment gain/(loss) (3)
Three months ended September 30, 2015
Fixed maturities
Corporate debt	$	43,008	$	—	$	—		$	(2	)	$	300		$	22,821	$	—	$	(4,403	)	$	61,724	$	—
CMBS	21,900		—		(9,902		)	—			(219		)	—		—		(461		)	11,318		—
ABS	110		—		—			—			—			—		—		(3		)	107		—
	65,018		—		(9,902		)	(2		)	81			22,821		—		(4,867		)	73,149		—
Other investments
Other privately held investments	—		—		—			—			—			—		—		—			—		—
CLO - Equities	36,921		—		—			1,192			—			—		—		(3,118		)	34,995		1,192
	36,921		—		—			1,192			—			—		—		(3,118		)	34,995		1,192
Other assets
Derivative instruments	240		—		—			35			—			—		—		(240		)	35		35
Insurance-linked securities	24,837		—		—			175			—			—		—		—			25,012		175
	25,077		—		—			210			—			—		—		(240		)	25,047		210
Total assets	$	127,016	$	—	$	(9,902	)	$	1,400		$	81		$	22,821	$	—	$	(8,225	)	$	133,191	$	1,402
Other liabilities
Derivative instruments	$	818	$	—	$	—		$	(331	)	$	—		$	6,475	$	—	$	—		$	6,962	$	(331	)
Total liabilities	$	818	$	—	$	—		$	(331	)	$	—		$	6,475	$	—	$	—		$	6,962	$	(331	)
Nine months ended September 30, 2015
Fixed maturities
Corporate debt	$	15,837	$	—	$	—		$	(2	)	$	724		$	54,445	$	—	$	(9,280	)	$	61,724	$	—
CMBS	17,763		5,072		(9,902		)	—			(543		)	—		—		(1,072		)	11,318		—
ABS	40,031		—		(39,851		)	—			105			—		—		(178		)	107		—
	73,631		5,072		(49,753		)	(2		)	286			54,445		—		(10,530		)	73,149		—
Other investments
Other privately held investments	—		—		—			—			—			—		—		—			—		—
CLO - Equities	37,046		—		—			7,930			—			—		—		(9,981		)	34,995		7,930
	37,046		—		—			7,930			—			—		—		(9,981		)	34,995		7,930
Other assets
Derivative instruments	111		—		—			(792		)	—			—		—		716			35		35
Insurance-linked securities	—		—		—			12			—			25,000		—		—			25,012		12
	111		—		—			(780		)	—			25,000		—		716			25,047		47
Total assets	$	110,788	$	5,072	$	(49,753	)	$	7,148		$	286		$	79,445	$	—	$	(19,795	)	$	133,191	$	7,977
Other liabilities
Derivative instruments	$	15,288	$	—	$	—		$	(12,053	)	$	—		$	8,698	$	—	$	(4,971	)	$	6,962	$	(318	)
Total liabilities	$	15,288	$	—	$	—		$	(12,053	)	$	—		$	8,698	$	—	$	(4,971	)	$	6,962	$	(318	)

(1) Gains and losses included in earnings on fixed maturities are included in net realized investment gains (losses). Gains and (losses) included in earnings on other investments are included in net investment income. Gains (losses) on weather derivatives included in earnings are included in other insurance-related income.

(2) Gains and losses included in other comprehensive income (“OCI”) on fixed maturities are included in unrealized gains (losses) arising during the period.

(3) Change in unrealized investment gain (loss) relating to assets held at the reporting date.

The transfers into and out of fair value hierarchy levels reflect the fair value of the securities at the end of the reporting period.

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4. FAIR VALUE MEASUREMENTS (CONTINUED)

Transfers into Level 3 from Level 2

There were no transfers to Level 3 from Level 2 made during the three months ended September 30, 2016 and 2015.

The transfers to Level 3 from Level 2 made during the nine months ended September 30, 2016 were primarily due to the lack of observable market inputs and multiple quotes from pricing vendors and broker-dealers for certain fixed maturities and as the result of a change in valuation methodology relating to our CLO equity fund. An income approach valuation technique (discounted cash flow model) is used to estimate fair value at September 30, 2016. As the NAV practical expedient is no longer used the CLO equity fund is now categorized within the fair value hierarchy.

The transfers to Level 3 from Level 2 made during the nine months ended September 30, 2015 were primarily due to the lack of observable market inputs and multiple quotes from pricing vendors and broker-dealers for certain fixed maturities.

Transfers out of Level 3 into Level 2

There were no transfers to Level 2 from Level 3 made during the three months ended September 30, 2016. The transfers to Level 2 from Level 3 made during the nine months ended September 30, 2016 were primarily due to the availability of observable market

inputs and quotes from pricing vendors on certain fixed maturities.

The transfers to Level 2 from Level 3 made during the three and nine months ended September 30, 2015 were primarily due to the availability of observable market inputs and quotes from pricing vendors on certain fixed maturities and CLO Debt securities.

Measuring the Fair Value of Other Investments Using Net Asset Valuations

As a practical expedient, we estimate fair values for hedge funds, direct lending funds, private equity funds and real estate funds using NAVs as advised by external fund managers or third party administrators. For each of these funds, the NAV is based on the manager's or administrator's valuation of the underlying holdings in accordance with the fund's governing documents and in accordance with U.S. GAAP.

If there is a reporting lag between the current period end and reporting date of the latest available fund valuation for any hedge fund, we estimate the change in fair value by starting with the most recently available fund valuation and adjusting for return estimates as well as any subscriptions, redemptions and distributions that took place during the current period. Return estimates are obtained from the relevant fund managers. Accordingly, we do not typically have a reporting lag in our fair value measurements for these funds. Historically, our valuation estimates incorporating these return estimates have not significantly diverged from the subsequently received NAVs.

For private equity funds, direct lending funds and the real estate fund, valuation statements are typically released on a three month reporting lag therefore the Company estimates fair value of these funds by starting with the prior quarter-end fund valuations and adjusting for capital calls, redemptions, drawdowns and distributions. Return estimates are not available from the relevant fund managers for these funds. Accordingly, we typically have a reporting lag in our fair value measurements for these funds.

The Company often does not have access to financial information relating to the underlying securities held within the funds, therefore management is unable to corroborate the fair values placed on the securities underlying the asset valuations provided by the fund manager or fund administrator. To address this, on a quarterly basis, we perform a number of monitoring procedures to assess the quality of the information provided by managers and administrators. These procedures include, but are not limited to, regular review and discussion of each fund's performance with its manager, regular evaluation of fund performance against applicable benchmarks and the backtesting of our fair value estimates against subsequently received NAVs. Backtesting involves comparing our previously reported values for each individual fund against NAVs per audited financial statements (for year-end values) and final NAVs from fund managers and fund administrators (for interim values).

The fair value of our hedge funds, direct lending funds, private equity funds and real estate funds are measured using the NAV practical expedient and therefore have not been categorized with the fair value hierarchy.

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4. FAIR VALUE MEASUREMENTS (CONTINUED)

Financial Instruments Not Carried at Fair Value

U.S. GAAP guidance over disclosures about the fair value of financial instruments are also applicable to financial instruments not carried at fair value, except for certain financial instruments, including insurance contracts.

The carrying values of cash equivalents (including restricted amounts), accrued investment income, receivable for investments sold, certain other assets, payable for investments purchased and certain other liabilities approximated their fair values at September 30,2016, due to their respective short maturities. As these financial instruments are not actively traded, their respective fair values are classified within Level 2.

The carrying value of mortgage loans held-for-investment approximated their fair value at September 30,2016, as the loans are within their first two years of issue. The estimated fair value of mortgage loans is primarily determined by estimating expected future cash flows and discounting them using current interest rates for similar mortgage loans with similar credit risk, or is determined from pricing for similar loans. As mortgage loans are not actively traded, their respective fair values are classified within Level 3.

At September 30,2016, our senior notes are recorded at amortized cost with a carrying value of $993 million (2015: $992 million) and have a fair value of $1,083 million (2015: $1,058 million). The fair values of these securities were obtained from a third party pricing service and pricing was based on the spread above the risk-free yield curve. These spreads are generally obtained from the new issue market, secondary trading and broker-dealer quotes. As these spreads and the yields for the risk-free yield curve are observable market inputs, the fair values of our senior notes are classified within Level 2.

5. DERIVATIVE INSTRUMENTS

The following table summarizes the balance sheet classification of derivatives recorded at fair values. The notional amount of derivative contracts represents the basis upon which pay or receive amounts are calculated and is presented in the table to quantify the volume of our derivative activities. Notional amounts are not reflective of credit risk.

None of our derivative instruments are designated as hedges under current accounting guidance.

	September 30, 2016						December 31, 2015
	Derivative Notional Amount		Derivative Asset Fair Value(1)		Derivative Liability Fair Value(1)		Derivative Notional Amount		Derivative Asset Fair Value(1)		Derivative Liability Fair Value(1)
Relating to investment portfolio:
Foreign exchange forward contracts	$	40,367	$	279	$	17	$	198,406	$	490	$	837
Interest rate swaps	—		—		—		—		—		—
Relating to underwriting portfolio:
Foreign exchange forward contracts	560,477		25		4,394		692,023		1,582		6,855
Weather-related contracts	59,436		2,488		8,184		51,395		4,395		10,937
Commodity contracts	181,000		4,165		—		—		—		—
Total derivatives			$	6,957	$	12,595			$	6,467	$	18,629

(1) Asset and liability derivatives are classified within other assets and other liabilities in the Consolidated Balance Sheets.

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5. DERIVATIVE INSTRUMENTS (CONTINUED)

Offsetting Assets and Liabilities

Our derivative instruments are generally traded under International Swaps and Derivatives Association master netting agreements, which establish terms that apply to all transactions. In the event of a bankruptcy or other stipulated event, master netting agreements provide that individual positions be replaced with a new amount, usually referred to as the termination amount, determined by taking into account market prices and converting into a single currency. Effectively, this contractual close-out netting reduces credit exposure from gross to net exposure. The table below presents a reconciliation of our gross derivative assets and liabilities to the net amounts presented in our Consolidated Balance Sheets, with the difference being attributable to the impact of master netting agreements.

	September 30, 2016							December 31, 2015
	Gross Amounts		Gross Amounts Offset			Net Amounts(1)		Gross Amounts		Gross Amounts Offset			Net Amounts(1)
Derivative assets	$	9,370	$	(2,413	)	$	6,957	$	14,336	$	(7,869	)	$	6,467
Derivative liabilities	$	15,008	$	(2,413	)	$	12,595	$	26,498	$	(7,869	)	$	18,629

(1) Net asset and liability derivatives are classified within other assets and other liabilities in the Consolidated Balance Sheets.

Refer to Note 3 - Investments for information on reverse repurchase agreements.

Derivative Instruments not Designated as Hedging Instruments

a) Relating to Investment Portfolio

Foreign Currency Risk

Within our investment portfolio we are exposed to foreign currency risk. Accordingly, the fair values for our investment portfolio are partially influenced by the change in foreign exchange rates. We may enter into foreign exchange forward contracts to manage the effect of this foreign currency risk. These foreign currency hedging activities are not designated as specific hedges for financial reporting purposes.

Interest Rate Risk

Our investment portfolio contains a large percentage of fixed maturities which exposes us to significant interest rate risk. As part of our overall management of this risk, we may use interest rate swaps.

b) Relating to Underwriting Portfolio

Foreign Currency Risk

Our (re)insurance subsidiaries and branches operate in various foreign countries. Consequently, some of our business is written in currencies other than the U.S. dollar and, therefore, our underwriting portfolio is exposed to significant foreign currency risk. We manage foreign currency risk by seeking to match our foreign-denominated net liabilities under (re)insurance contracts with cash and investments that are denominated in such currencies. We may also use derivative instruments, specifically forward contracts and currency options, to economically hedge foreign currency exposures.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

5. DERIVATIVE INSTRUMENTS (CONTINUED)

Weather Risk

We write derivative-based risk management products designed to address weather risks with the objective of generating profits on a portfolio basis. The majority of this business consists of receiving a payment at contract inception in exchange for bearing the risk of variations in a quantifiable weather-related phenomenon, such as temperature. Where a client wishes to minimize the upfront payment, these transactions may be structured as swaps or collars. In general, our portfolio of such derivative contracts is of short duration, with contracts being predominantly seasonal in nature. In order to economically hedge a portion of this portfolio, we may also purchase weather derivatives.

Commodity Risk

Within our (re)insurance portfolio we are exposed to commodity price risk. We may hedge a portion of this price risk by entering into commodity derivative contracts.

The total unrealized and realized gains (losses) recognized in earnings for derivatives not designated as hedges were as follows:

	Location of Gain (Loss) Recognized in Income on Derivative	Three months ended September 30,						Nine months ended September 30,
		2016			2015			2016			2015
Derivatives not designated as hedging instruments
Relating to investment portfolio:
Foreign exchange forward contracts	Net realized investment gains (losses)	$	155		$	6,412		$	39		$	11,234
Interest rate swaps	Net realized investment gains (losses)	—			—			—			(4,006		)
Relating to underwriting portfolio:
Foreign exchange forward contracts	Foreign exchange losses (gains)	(182		)	(5,210		)	(2,958		)	(21,494		)
Weather-related contracts	Other insurance related income (losses)	833			307			809			11,274
Commodity contracts	Other insurance related income (losses)	1,799			(33		)	1,499			(923		)
Total		$	2,605		$	1,476		$	(611	)	$	(3,915	)

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

6.    RESERVE FOR LOSSES AND LOSS EXPENSES

The following table presents a reconciliation of our beginning and ending gross reserve for losses and loss expenses and net reserve for unpaid losses and loss expenses for the periods indicated:

Nine months ended September 30,	2016			2015
Gross reserve for losses and loss expenses, beginning of period	$	9,646,285		$	9,596,797
Less reinsurance recoverable on unpaid losses, beginning of period	(2,031,309		)	(1,890,280		)
Net reserve for unpaid losses and loss expenses, beginning of period	7,614,976			7,706,517
Net incurred losses and loss expenses related to:
Current year	1,887,715			1,818,672
Prior years	(224,131		)	(165,804		)
	1,663,584			1,652,868
Net paid losses and loss expenses related to:
Current year	(233,124		)	(185,953		)
Prior years	(1,334,772		)	(1,293,776		)
	(1,567,896		)	(1,479,729		)
Foreign exchange and other	(112,649		)	(183,360		)
Net reserve for unpaid losses and loss expenses, end of period	7,598,015			7,696,296
Reinsurance recoverable on unpaid losses, end of period	2,276,792			2,007,287
Gross reserve for losses and loss expenses, end of period	$	9,874,807		$	9,703,583

We write business with loss experience generally characterized as low frequency and high severity in nature, which can result

in volatility in our financial results. During the nine months endedSeptember 30, 2016 and 2015, we recognized aggregate net losses and loss expenses, net of reinstatement premiums of $145 million and $90 million, respectively, in relation to catastrophe and weather-related events.

During April 2016, the Company entered into a quota share and adverse development cover reinsurance agreement, a retroactive contract which was deemed to have met the established criteria for retroactive reinsurance accounting. Foreign exchange and other includes reinsurance recoverables of $159 million related to this reinsurance agreement.

Prior year reserve development arises from changes to loss and loss expense estimates recognized in the current year but relating to losses incurred in previous calendar years. Such development is summarized by segment in the following table:

	Three months ended September 30,				Nine months ended September 30,
	2016		2015		2016		2015
Insurance	$	20,688	$	2,444	$	43,181	$	21,225
Reinsurance	55,331		42,681		180,950		144,579
Total	$	76,019	$	45,125	$	224,131	$	165,804

The majority of the net favorable prior year reserve development in each period related to short-tail reserve classes. Net favorable prior year reserve development for professional, reinsurance liability and motor reserve classes also contributed in the three and nine months ended September 30, 2016.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

6. RESERVE FOR LOSSES AND LOSS EXPENSES (CONTINUED)

Our short tail business includes the underlying exposures in the property and other, marine and aviation reserving classes within our insurance segment and the property and other reserving class within our reinsurance segment. Development from these classes contributed $41 million and $38 million of the total net favorable prior year reserve development for the three months ended September 30,2016 and 2015, respectively. For the nine months ended September 30, 2016 and 2015, these short-tail lines contributed $116 million and $112 million, respectively, of net favorable prior year reserve development. The net favorable prior year reserve development for these classes primarily reflected the recognition of better than expected loss emergence.

Our medium-tail business consists primarily of professional insurance and reinsurance reserve classes, credit and political risk insurance reserve class and the credit and surety reinsurance reserve class. In the three and nine months ended September 30, 2016, the professional reserve classes contributed net favorable prior year reserve development of $12 million and $28 million, respectively. In the nine months ended September 30, 2015, the reinsurance professional reserve class contributed $25 million of net favorable development. The net favorable prior year development on these reserve classes continued to reflect the generally favorable experience on earlier accident years as we continued to transition to more experience based methods on these years. As our loss experience has generally been better than expected, this resulted in the recognition of net favorable prior year reserve development. In the three and nine months ended September 30, 2015, the insurance professional reserve class recorded net adverse prior year reserve development of $15 million and $16 million, respectively. This adverse development was primarily the result of strengthening in our Australian book of business during the third quarter of 2015.

In the three and nine months ended September 30, 2015, the credit and surety reserve class recorded net favorable prior year reserve development of $7 million and $19 million, respectively. This net favorable prior year reserve development reflected the recognition of generally better than expected loss emergence.

In the nine months ended September 30, 2015, we recorded net adverse prior year reserve development of $15 million in our credit and political risk reserve class relating to an increase in our loss portfolio estimates.

Our long-tail business consists primarily of liability and motor reserve classes. Our motor and liability reinsurance reserve classes contributed additional net favorable prior year reserve development of $17 million and $20 million in the three months ended September 30, 2016 and 2015, respectively. For the nine months ended September 30, 2016 and 2015, these long-tail reserve classes contributed $72 million and $64 million, respectively. The net favorable prior year reserve development for the motor reserve class related to favorable loss emergence trends on several classes of business spanning multiple accident years. The net favorable prior year reserve development for the liability reinsurance reserve class primarily reflected the progressively increased weight given by management to experience based indications on older accident years, which has generally been favorable. In the three and nine months ended September 30, 2015, we recorded net adverse prior year reserve development of $6 million and $23 million, respectively, in our insurance liability reserve class related primarily to an increase in loss estimates for specific individual claim reserves, as well as a higher frequency of large auto liability claims.

Our September 30, 2016 net reserves for losses and loss expenses includes estimated amounts for numerous catastrophe events. We caution that the magnitude and/or complexity of losses arising from certain of these events, in particular the Fort McMurray wildfires, Storm Sandy, the 2011 Japanese earthquake and tsunami, the three New Zealand earthquakes and the Tianjin port explosion, inherently increases the level of uncertainty and, therefore, the level of management judgment involved in arriving at our estimated net reserves for losses and loss expenses. As a result, our actual losses for these events may ultimately differ materially from our current estimates.

7. SHARE-BASED COMPENSATION

For the three months endedSeptember 30,2016, we incurred share-based compensation costs of $14 million (2015: $11 million) and recorded associated tax benefits of $3 million (2015: $3 million). For the nine months endedSeptember 30,2016, we incurred share-based compensation costs of $50 million (2015: $41 million) and recorded associated tax benefits of $11 million (2015: $11 million).

The total fair value of restricted stock, restricted stock units and cash settled awards vested during the nine months endedSeptember 30,2016 was $66 million (2015: $73 million). At September 30,2016 there were $104 million of unrecognized compensation costs, which are expected to be recognized over the weighted average period of 2.4 years.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

7.    SHARE-BASED COMPENSATION (CONTINUED)

Awards to settle in shares

The following table provides a reconciliation of the beginning and ending balance of nonvested restricted stock (including restricted stock units) for the nine months endedSeptember 30,2016:

	Performance-based Stock Awards				Service-based Stock Awards
	Number of Restricted Stock		Weighted Average Grant Date Fair Value		Number of Restricted Stock		Weighted  Average Grant Date Fair Value(1)
Nonvested restricted stock - beginning of period	201		$	49.24	1,954		$	43.34
Granted	104		53.80		586		53.81
Vested	(48	)	45.38		(779	)	39.26
Forfeited	—		—		(94	)	47.03
Nonvested restricted stock - end of period	257		$	52.04	1,667		$	48.77

(1) Fair value is based on the closing price of our common shares on the New York Stock Exchange on the day of the grant.

Cash-settled awards

The following table provides a reconciliation of the beginning and ending balance of nonvested cash settled restricted stock units for the nine months endedSeptember 30,2016:

	Performance-based Cash Settled RSUs		Service-based Cash Settled RSUs
	Number of Restricted Stock Units		Number of Restricted Stock Units
Nonvested restricted stock units - beginning of period	70		1,433
Granted	18		494
Vested	(32	)	(371	)
Forfeited	—		(94	)
Nonvested restricted stock units - end of period	56		1,462

At September 30, 2016, the corresponding liability for cash-settled units, included in other liabilities on the Consolidated Balance Sheets, was $34 million (2015: $23 million).

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

8. EARNINGS PER COMMON SHARE

The following table sets forth the comparison of basic and diluted earnings per common share:

	Three months ended September 30,				Nine months ended September 30,
	2016		2015		2016		2015
Basic earnings per common share
Net income	$	186,613	$	257,642	$	364,460	$	496,838
Less: preferred share dividends	9,969		10,022		29,906		30,066
Net income available to common shareholders	176,644		247,620		334,554		466,772
Weighted average common shares outstanding - basic(1)	89,621		98,226		91,852		99,464
Basic earnings per common share	$	1.97	$	2.52	$	3.64	$	4.69
Diluted earnings per common share
Net income available to common shareholders	$	176,644	$	247,620	$	334,554	$	466,772
Weighted average common shares outstanding - basic(1)	89,621		98,226		91,852		99,464
Share based compensation plans	730		898		727		1,004
Weighted average common shares outstanding - diluted(1)	90,351		99,124		92,579		100,468
Diluted earnings per common share	$	1.96	$	2.50	$	3.61	$	4.65
Anti-dilutive shares excluded from the dilutive computation	—		—		226		219

(1) On August 17, 2015, the Company entered into an Accelerated Share Repurchase (“ASR”) agreement (see 'Note 9 - Shareholders' Equity' for additional detail). The weighted-average number of shares outstanding used in the computation of basic and diluted earnings per share reflects the Company’s receipt of 4,149,378 common shares delivered to the Company on August 20, 2015, and 1,358,380 common shares delivered to the company on January 15, 2016 under the Company's ASR agreement.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

9.    SHAREHOLDERS' EQUITY

The following table presents our common shares issued and outstanding:

	Three months ended September 30,				Nine months ended September 30,
	2016		2015		2016		2015
Shares issued, balance at beginning of period	176,575		176,206		176,240		175,478
Shares issued	—		16		335		744
Total shares issued at end of period	176,575		176,222		176,575		176,222
Treasury shares, balance at beginning of period	(85,921	)	(75,922	)	(80,174	)	(76,052	)
Shares repurchased	(2,252	)	(4,257	)	(8,499	)	(4,607	)
Shares reissued from treasury	37		6		537		486
Total treasury shares at end of period	(88,136	)	(80,173	)	(88,136	)	(80,173	)
Total shares outstanding	88,439		96,049		88,439		96,049

Treasury Shares

The following table presents our share repurchases:

	Three months ended September 30,				Nine months ended September 30,
	2016		2015		2016		2015
In the open market:
Total shares(1)	2,232		4,248		8,236		4,264
Total cost	$	124,948	$	245,658	$	434,948	$	246,490
Average price per share(2)	$	56.00	$	57.83	$	52.81	$	57.80
From employees:
Total shares	20		9		263		343
Total cost	$	1,088	$	489	$	14,137	$	17,586
Average price per share(2)	$	54.13	$	55.59	$	53.68	$	51.28
Total shares repurchased:
Total shares	2,252		4,257		8,499		4,607
Total cost	$	126,036	$	246,147	$	449,085	$	264,076
Average price per share(2)	$	55.98	$	57.83	$	52.84	$	57.32

(1) The nine months ended September 30, 2016 includes 1,358,380 common shares acquired under the accelerated share repurchase program (see below for more detail).

(2) Calculated using whole figures.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

9. SHAREHOLDERS' EQUITY (CONTINUED)

Accelerated Share Repurchase Program

On August 17, 2015, the Company entered into an Accelerated Share Repurchase agreement with Goldman, Sachs & Co. (“Goldman Sachs”) to repurchase an aggregate of $300 million of the Company’s ordinary shares under an accelerated share repurchase program.

During August, 2015, under the terms of this agreement, the Company paid $300 million to Goldman Sachs and initially repurchased 4,149,378 ordinary shares. The initial shares acquired represented 80% of the $300 million total paid to Goldman Sachs and were calculated using the Company’s stock price at activation of the program. The ASR program is accounted for as an equity transaction. Accordingly, as at December 31, 2015, $240 million of common shares repurchased were included as treasury shares in the Consolidated Balance Sheet with the remaining $60 million included as a reduction to additional paid-in capital.

On January 15, 2016, Goldman Sachs early terminated the ASR agreement and delivered 1,358,380 additional common shares to the Company, resulting in the reduction from additional paid-in capital of $60 million being reclassified to treasury shares. In total, the Company repurchased 5,507,758 common shares under the ASR agreement at an average price of $54.47.

Series B Preferred Shares

On January 27, 2016 we redeemed the remaining 28,430 Series B preferred shares, for an aggregate liquidation preference of $3 million.

10. COMMITMENTS AND CONTINGENCIES

Reinsurance Agreements

We purchase reinsurance coverage for various lines of our business. The minimum reinsurance premiums are contractually due in advance on a quarterly basis. Accordingly at September 30,2016, we have unrecorded outstanding reinsurance purchase commitments of $33 million, of which $3 million is due in 2016 while the remaining $30 million is due in 2017. Actual payments under the reinsurance contracts will depend on the underlying subject premium and may exceed the minimum premium.

Investments

Refer 'Note 3 - Investments' for information on commitments related to our other investments.

40

AXIS CAPITAL HOLDINGS LIMITED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

11.    OTHER COMPREHENSIVE INCOME (LOSS)

The tax effects allocated to each component of other comprehensive income were as follows:

	2016									2015
	Before Tax Amount			Tax (Expense) Benefit			Net of Tax Amount			Before Tax Amount			Tax (Expense) Benefit			Net of Tax Amount
Three months ended September 30,
Available for sale investments:
Unrealized investment gains (losses) arising during the period	$	40,125		$	(3,789	)	$	36,336		$	(102,810	)	$	3,099		$	(99,711	)
Adjustment for reclassification of net realized investment gains (losses) and OTTI losses recognized in net income	(5,050		)	2,408			(2,642		)	76,368			(1,558		)	74,810
Unrealized investment gains (losses) arising during the period, net of reclassification adjustment	35,075			(1,381		)	33,694			(26,442		)	1,541			(24,901		)
Non-credit portion of OTTI losses	—			—			—			—			—			—
Foreign currency translation adjustment	1,722			—			1,722			(14,626		)	—			(14,626		)
Total other comprehensive income (loss), net of tax	$	36,797		$	(1,381	)	$	35,416		$	(41,068	)	$	1,541		$	(39,527	)
Nine months ended September 30,
Available for sale investments:
Unrealized investment gains (losses) arising during the period	$	263,235		$	(24,579	)	$	238,656		$	(183,822	)	$	6,884		$	(176,938	)
Adjustment for reclassification of net realized investment gains and OTTI losses recognized in net income	40,338			2,282			42,620			130,858			(2,088		)	128,770
Unrealized investment gains (losses) arising during the period, net of reclassification adjustment	303,573			(22,297		)	281,276			(52,964		)	4,796			(48,168		)
Non-credit portion of OTTI losses	—			—			—			—			—			—
Foreign currency translation adjustment	5,694			—			5,694			(23,851		)	—			(23,851		)
Total other comprehensive income (loss), net of tax	$	309,267		$	(22,297	)	$	286,970		$	(76,815	)	$	4,796		$	(72,019	)

Reclassifications out of AOCI into net income available to common shareholders were as follows:

		Amount Reclassified from AOCI(1)
Details About AOCI Components	Consolidated Statement of Operations Line Item That Includes Reclassification	Three months ended September 30,						Nine months ended September 30,
		2016			2015			2016			2015
Unrealized investment gains (losses) on available for sale investments
	Other realized investment gains (losses)	$	9,297		$	(44,067	)	$	(19,992	)	$	(68,096	)
	OTTI losses	(4,247		)	(32,301		)	(20,346		)	(62,762		)
	Total before tax	5,050			(76,368		)	(40,338		)	(130,858		)
	Income tax (expense) benefit	(2,408		)	1,558			(2,282		)	2,088
	Net of tax	$	2,642		$	(74,810	)	$	(42,620	)	$	(128,770	)

(1) Amounts in parentheses are debits to net income available to common shareholders.

41

AXIS CAPITAL HOLDINGS LIMITED

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

12. SUBSEQUENT EVENT

In October 2016, the landfall of Hurricane Matthew impacted the Caribbean, southeastern United States and Canada, causing catastrophic loss of life, property damage and flooding.

Our preliminary after-tax net loss estimate for this event is in the range of $45 million to $60 million. The Company's loss estimate is primarily based on a ground-up assessment of losses from individual contracts and treaties exposed to the affected regions, including preliminary information from clients, brokers and loss adjusters. Industry insured loss estimates, market share analyses and catastrophe modeling analyses were also taken into account where appropriate.

Due to the nature of this event, including the complexity of loss assessment, factors contributing to the losses and the preliminary nature of the information available to prepare these estimates, the actual net ultimate amount of losses for this event may be materially different from this current estimate.

ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

The following is a discussion and analysis of our financial condition and results of operations. This should be read in conjunction with the consolidated financial statements and related notes included in Item 1 of this report and also our Management’s Discussion and Analysis of Financial Condition and Results of Operations contained in our Annual Report on Form 10-K for the year ended December 31,2015. Tabular dollars are in thousands, except per share amounts. Amounts in tables may not reconcile due to rounding differences.

	Page
Third Quarter 2016 Financial Highlights	43
Executive Summary	44
Underwriting Results – Group	49
Results by Segment: For the three and nine months ended September 30, 2016 and 2015	57
i) Insurance Segment	57
ii) Reinsurance Segment	61
Other Expenses (Revenues), Net	64
Net Investment Income and Net Realized Investment Gains (Losses)	65
Cash and Investments	67
Liquidity and Capital Resources	70
Critical Accounting Estimates	72
New Accounting Standards	72
Off-Balance Sheet and Special Purpose Entity Arrangements	72
Non-GAAP Financial Measures	72

42

THIRD QUARTER 2016 FINANCIAL HIGHLIGHTS

Third Quarter 2016 Consolidated Results of Operations

• Net income available to common shareholders of $177 million, or $1.97 per common share and $1.96 per diluted common share

• Operating income of $161 million, or $1.78 per diluted common share⁽¹⁾

• Gross premiums written of $1.0 billion

• Net premiums written of $595 million, impacted by a large new retrocessional cover entered into with Harrington Re Ltd.

• Net premiums earned of $934 million

• Net favorable prior year reserve development of $76 million

• Estimated catastrophe and weather-related pre-tax net losses, net of reinstatement premiums, of $22 million compared to $43 million during the third quarter of 2015

• Underwriting income of $104 million and combined ratio of 92.6%

• Net investment income of $117 million

• Net realized investment gains of $5 million

• Foreign exchange gains of $14 million

Third Quarter 2016 Consolidated Financial Condition

• Total cash and investments of $14.6 billion; fixed maturities, cash and short-term securities comprise 87% of total cash and investments and have an average credit rating of AA-

• Total assets of $21.2 billion

• Reserve for losses and loss expenses of $9.9 billion and reinsurance recoverable of $2.3 billion

• Total debt of $1.0 billion and the debt to total capital ratio of 14.1%

• Repurchased 2.3 million common shares. At October 27,2016 the remaining authorization under the repurchase program approved by our Board of Directors was $375 million

• Common shareholders’ equity of $5.4 billion and diluted book value per common share of $59.77

(1) Operating income is a non-GAAP financial measure as defined in SEC Regulation G. Refer to ‘Non-GAAP Financial Measures’ for reconciliation to nearest GAAP financial measure (net income available to common shareholders).

43

EXECUTIVE SUMMARY

Business Overview

We are a Bermuda-based global provider of specialty lines insurance and treaty reinsurance products with operations in Bermuda, the United States, Europe, Singapore, Canada, Latin America and the Middle East. Our underwriting operations are organized around our two global underwriting platforms, AXIS Insurance and AXIS Re.

Our mission is to provide our clients and distribution partners with a broad range of risk transfer products and services and meaningful capacity, backed by significant financial strength. We manage our portfolio holistically, aiming to construct the optimum consolidated portfolio of funded and unfunded risks, consistent with our risk appetite and development of our franchise. We nurture an ethical, entrepreneurial and disciplined culture that promotes outstanding client service, intelligent risk taking and the achievement of superior risk-adjusted returns for our shareholders. We believe that the achievement of our objectives will position us as a global leader in specialty risks. Our execution on this strategy in the first nine months of 2016 included: 

• continued growth of our accident and health lines, which is focused on specialty accident and health products;

• growth of our Weather and Commodity Markets business unit which offers parametric risk management solutions to clients

whose profit margins are exposed to adverse weather and commodity price risks;

• growth of our syndicate at Lloyd's which provides us with access to Lloyd's worldwide licenses and an extensive distribution network. During the first quarter of 2016 we commenced writing business through our underwriting division at Lloyd's in China;

• continued rebalancing of our portfolio towards less-volatile lines of business that carry attractive rates; and

• continued expansion of our broad range of third-party capital capabilities through:

• Our investment in Harrington Reinsurance Holdings Limited ("Harrington"), the parent company of Harrington Re Ltd. ("Harrington Re"), an independent reinsurance company jointly sponsored by AXIS Capital and The Blackstone Group L.P. ("Blackstone"). Harrington Re’s strategy is to combine a multi-line reinsurance portfolio with a diversified allocation to alternative investment strategies to earn attractive risk-adjusted returns. Harrington plans to develop a portfolio that optimizes the risk-reward characteristics of both assets and liabilities, leveraging the respective strengths of AXIS Capital and Blackstone while deploying a disciplined and fully integrated approach to both underwriting and investing;

• AXIS Ventures Reinsurance Limited, which manages capital for investors interested in deploying funds directly into the property-catastrophe and other short-tail business; and

• increased use of available reinsurance and retrocessional protection to optimize the risk-adjusted returns on our portfolio.

44

Results of Operations

	Three months ended September 30,							Nine months ended September 30,
	2016			% Change	2015			2016			% Change	2015
Underwriting income:
Insurance	$	25,161		265%	$	6,888		$	31,187		93%	$	16,153
Reinsurance	78,837			60%	49,357			181,623			(8%)	197,729
Net investment income	116,923			156%	45,685			257,818			14%	226,336
Net realized investment gains (losses)	5,205			nm	(69,957		)	(40,295		)	(67%)	(123,618		)
Other expenses, net	(37,079		)	nm	(8,464		)	(63,439		)	18%	(53,895		)
Termination fee received	—			nm	280,000			—			nm	280,000
Reorganization and related fees	—			nm	(45,867		)	—			nm	(45,867		)
Interest in loss of equity method investments	(2,434		)	nm	—			(2,434		)	nm	—
Net income	186,613			(28%)	257,642			364,460			(27%)	496,838
Preferred share dividends	(9,969		)	(1%)	(10,022		)	(29,906		)	(1%)	(30,066		)
Net income available to common shareholders	$	176,644		(29%)	$	247,620		$	334,554		(28%)	$	466,772
Operating income	$	160,689		215%	$	51,031		$	309,450		10%	$	280,682

nm – not meaningful

Underwriting Results

Total underwriting income in the three months endedSeptember 30, 2016 was $104 million, an increase of $48 million compared to $56 million in the three months endedSeptember 30, 2015. The increase in underwriting income was primarily driven by an increase in net favorable prior year development, decreased catastrophe and weather-related losses, lower general and administrative expenses and an increase in other insurance related income, partially offset by an increase in the current accident year loss ratio excluding catastrophe and weather-related losses.

The reinsurance segment underwriting income increased by $29 million in the three months endedSeptember 30, 2016, compared to the three months endedSeptember 30, 2015. The increase in underwriting income was primarily driven by decreased catastrophe and weather-related losses, an increase in net favorable prior year development, lower general and administrative expenses and an increase in other insurance related income, partially offset by an increase in the acquisition cost ratio.

The insurance segment underwriting income increased by $18 million in the three months endedSeptember 30, 2016, compared to the three months endedSeptember 30, 2015. The increase in underwriting income was primarily due to an increase in net favorable prior year development and a decrease in the acquisition cost ratio, partially offset by an increase in the current accident year loss ratio excluding catastrophe and weather-related losses.

Total underwriting income in the nine months ended September 30, 2016 was $213 million, a decrease of $1 million compared to $214 million in the nine months ended September 30, 2015. The decrease in underwriting income was primarily driven by increased catastrophe and weather-related losses, an increase in the acquisition cost ratio and a decrease in other insurance income, partially offset by an increase in net favorable prior year development and lower general and administrative expenses.

The reinsurance segment underwriting income decreased by $16 million in the nine months ended September 30, 2016, compared to the nine months ended September 30, 2015. The decrease in underwriting income was primarily driven by an increase in the acquisition cost ratio, increased catastrophe and weather-related losses and a decrease in other insurance related income, partially offset by an increase in net favorable prior year development and lower general and administrative expenses.

The insurance segment underwriting income increased by $15 million in the nine months ended September 30, 2016, compared to the nine months ended September 30, 2015. The increase in underwriting income was primarily due to an increase in net favorable prior year development, a decrease in the acquisition cost ratio and lower general and administrative expenses, partially offset by increased catastrophe and weather-related losses.

45

Net Investment Income

Net investment income in the three months ended September 30, 2016 was $117 million, an increase of $71 million compared to $46 million in the three months ended September 30, 2015. The increase was primarily driven by our other investments. These investments generated a gain of $38 million in the three months ended September 30, 2016, compared to a loss of $27 million in three months ended September 30, 2015. Net investment income for the nine months ended September 30, 2016 was $258 million, an increase of $31 million compared to the same period in 2015. The increase was mainly attributable to income from fixed maturities and other investments. Income from fixed maturities increased as a result of an emphasis on longer duration assets and income from other investments increased as a result of improved valuations on our CLO - Equity holdings.

Net Realized Investment Gains (Losses)

Realized gains were $5 million in the three months ended September 30, 2016 compared to realized losses of $70 million for the same period of 2015. The gains were mainly attributable to corporates, agency MBS, CMBS and ETFs which benefited from improvements in pricing in 2016. The realized losses in the three months ended September 30, 2015 were attributable to foreign currency losses on non-U.S. denominated securities as a result of the strengthening of the U.S. dollar and other-than-temporary impairment ("OTTI") charges. Realized losses were $40 million in the nine months ended September 30, 2016, compared to realized losses of $124 million for the same period of 2015. The losses for the three and nine months ended September 30, 2016 and 2015 were primarily attributable to foreign currency losses on non-U.S. denominated securities as a result of the strengthening of the U.S. dollar and OTTI charges.

Other Revenues (Expenses), Net

Corporate expenses increased to $29 million for the three months endedSeptember 30, 2016, from $24 million for the three months endedSeptember 30, 2015. The increase is primarily attributable to the net reimbursement of PartnerRe Ltd. ("PartnerRe") merger-related expenses benefiting 2015 and senior executive transition costs in 2016, partially offset by reorganization related expenses adverse to 2015. For the nine months endedSeptember 30, 2016, corporate expenses increased to $87 million compared to $84 million in the same period in 2015. The slight increase is attributable to adjustments to senior leadership executive stock-compensation awards benefiting 2015, senior executive transition costs in 2016, and an increase in personnel costs in 2016, partially offset by expenses attributable to the proposed merger with PartnerRe and reorganization related expenses adverse to 2015.

The foreign exchange gains for the three and nine months endedSeptember 30, 2016 of $14 million and $70 million, respectively, were primarily driven by the depreciation of the pound sterling against the U.S dollar. The foreign exchange gains of $28 million for the three months endedSeptember 30, 2015 were primarily driven by depreciation of the pound sterling and the Australian dollar against the U.S. dollar, while the foreign exchange gains for the nine months endedSeptember 30, 2015 of $69 million were primarily driven by the depreciation of the euro, pound sterling and Australian dollar.

The financial results for the three months endedSeptember 30, 2016 resulted in a tax expense of $9 million, compared to an expense of nil for the three months endedSeptember 30, 2015. Operations in the nine months endedSeptember 30, 2016 resulted in a tax expense of $8 million compared to a tax expense of $1 million in the nine months endedSeptember 30, 2015. The effective tax rate, which drives the tax expense, can vary between periods depending on the distribution of net income amongst tax jurisdictions, as well as other factors. The primary driver of the increase in both periods is the generation of consolidated pre-tax net income in our operations in Europe compared to net losses in 2015.

Termination Fee Received

During the third quarter of 2015, the Company announced that we had accepted a request from PartnerRe to terminate the Agreement and Plan of Amalgamation (the "Amalgamation Agreement") with the Company. PartnerRe paid the Company $315 million to immediately terminate the Amalgamation Agreement, the amount was comprised of a termination fee of $280 million and a reimbursement of merger related expenses of $35 million.

46

Reorganization and Related Expenses

During the third quarter of 2015, the Company implemented a number of profitability enhancement initiatives which resulted in a recognition of reorganization and related expenses of $46 million and additional corporate expenses of $5 million in the Consolidated Statement of Operations in the three months ended September 30, 2015.

Interest in Loss of Equity Method Investments

Interest in losses of equity method investments represents the Company’s aggregate share of losses related to investments in which the Company has significant influence over the operating and financial policies of the investee.

Outlook

Management expects to achieve an increase in gross premiums written in 2016, with variances between our lines of business within the operating segments driven by market conditions and available opportunities, as we maintain our focus on diversification and pursuit of those opportunities that will expand our reach in areas where we believe the returns to be most attractive. We also expect the increase in gross premiums written to be substantially offset by greater cessions of risk to reinsurers and third party capital partners.

Competitive conditions continue to impact worldwide insurance markets with greatest pressures impacting catastrophe exposed property and certain global specialty lines of business. We also observed greater competitiveness for large accounts compared to smaller risks. These competitive pressures have led to price reductions across most lines of business, with decreases in international markets generally more severe than those observed in the United States. We expect this trend to continue in the short-term but believe that there are still attractive risks in the market. In this challenging market environment, we are focusing on lines and markets that remain adequately priced or continue to deliver price increases and those that provide opportunities for profitable growth.  Where necessary we also continue to shift our business mix toward smaller, less volatile risk accounts which we believe will enable us to achieve a better, more stable attritional loss experience with lower severity.

The reinsurance markets' trading environment remains challenging in the majority of lines of business and geographical regions. The market continues to be influenced by excess capacity, strong balance sheets of established market participants and a consolidation of reinsurance purchasing. Despite these conditions we observed recent favorable trends which we expect to impact our business including many cedants reducing the size of their reinsurer panels, some moderation of pricing pressures, increased resistance to demands for greater commission rates as well as more generous terms and conditions, an increase in the number of cedants looking to buy more reinsurance protection and Solvency II-driven opportunities. These factors, combined with AXIS customer-centric approach and opportunities in specific lines of business and geographies allow us to execute on our targeted growth strategy. We continue to address the difficult market conditions by taking actions to protect the quality and profitability of our existing book, targeting larger shares of the more attractive treaties, managing the overall volatility of our reinsurance book, and expanding our already strong group of third party capital partners with whom to share our risks and earn fee income.

47

Financial Measures

We believe the following financial indicators are important in evaluating our performance and measuring the overall growth in value generated for our common shareholders:

	Three months ended and at September 30,						Nine months ended and at September 30,
	2016			2015			2016			2015
ROACE (annualized)(1)	13.2		%	18.8		%	8.4		%	12.0		%
Operating ROACE (annualized)(2)	12.0		%	3.9		%	7.8		%	7.2		%
DBV per common share(3)	$	59.77		$	53.68		$	59.77		$	53.68
Cash dividends declared per common share	0.35			0.29			1.05			0.87
Increase in diluted book value per common share adjusted for dividends	$	2.50		$	2.16		$	6.74		$	4.67

(1) Return on average common equity (“ROACE”) is calculated by dividing annualized net income available to common shareholders for the period by the average shareholders’ equity determined by using the common shareholders’ equity balances at the beginning and end of the period.

(2) Operating ROACE is calculated by dividing annualized operating income for the period by the average common shareholders’ equity determined by using the common shareholders’ equity balances at the beginning and end of the period. Annualized operating ROACE is a non-GAAP financial measure as defined in SEC Regulation G. Refer to‘Non-GAAP Financial Measures’ for additional information and reconciliation to the nearest GAAP financial measure (ROACE).

(3) Diluted book value (“DBV”) per common share represents total common shareholders’ equity divided by the number of common shares and diluted common share equivalents outstanding, determined using the treasury stock method. Cash settled awards are excluded from the denominator.

Return on Equity

The decrease in ROACE in the three months ended September 30, 2016, compared to the three months ended September 30, 2015, was primarily driven by the termination fee received from PartnerRe in the third quarter of 2015, partially offset by net realized gains in the current quarter compared to net realized losses in the same period in 2015, an increase in net investment income and underwriting income in the current quarter compared to the same period in 2015 and reorganization and related expenses incurred in the third quarter of 2015.

The increase in operating ROACE for the three months ended September 30, 2016, compared to the three months ended September 30, 2015 was primarily driven by an increase in net investment income and underwriting income in the three months ended September 30, 2016 compared to the same period in 2015.

The decrease in ROACE in the nine months ended September 30, 2016, compared to the nine months ended September 30, 2015, was primarily driven by the termination fee received from PartnerRe in the third quarter of 2015, partially offset by a decrease in net realized losses and an increase in net investment income in the nine months ended September 30, 2016 compared to the same period in 2015 and reorganization and related expenses incurred in the third quarter of 2015.

The increase in operating ROACE in the nine months ended September 30, 2016, compared to the nine months ended September 30, 2015, was primarily driven by an increase in net investment income in the nine months ended September 30, 2016 compared to the same period in 2015.

Diluted Book Value per Common Share

Our diluted book value per common share increase of 11% from $53.68 at September 30, 2015, to $59.77 at September 30, 2016, primarily reflected the generation of $469 million in net income available to common shareholders over the past twelve months and the increase over the last twelve months in unrealized gains on investments which are included in accumulated other comprehensive income, which was partially offset by common share dividends declared.

48

Diluted Book Value per Common Share Adjusted for Dividends

Our diluted book value per common share adjusted for dividends increased by $2.50, or 4%, per common share for the three month period ended September 30, 2016 and $7.49, or 14%, per common share over the past twelve months.

Taken together, we believe that growth in diluted book value per common share and common share dividends declared represent the total value created for our common shareholders. As companies in the insurance industry have differing dividend payout policies, we believe investors use the diluted book value per common share adjusted for dividends metric to measure comparable performance across the industry.

During the three and nine months ended September 30, 2016, total value created consisted primarily of our net income and an increase in unrealized gains on investments, reported in accumulated other comprehensive income.

During the three and nine months ended September 30, 2015, total value created consisted primarily of our net income, partially offset by an increase in unrealized losses on investments and foreign exchange translation adjustment losses included in accumulated other comprehensive income.

UNDERWRITING RESULTS – GROUP

The following table provides our group underwriting results for the periods indicated. Underwriting income is a pre-tax measure of underwriting profitability that takes into account net premiums earned and other insurance related income as revenues and net losses and loss expenses, acquisition costs and underwriting-related general and administrative costs as expenses.

	Three months ended September 30,							Nine months ended September 30,
	2016			% Change	2015			2016			% Change	2015
Revenues:
Gross premiums written	$	959,962		2%	$	936,583		$	4,239,558		11%	$	3,803,928
Net premiums written	595,431			(12%)	677,217			3,288,587			7%	3,079,307
Net premiums earned	934,415			2%	919,341			2,783,746			1%	2,764,605
Other insurance related income	5,944			413%	1,158			4,850			(61%)	12,319
Expenses:
Current year net losses and loss expenses	(608,347		)		(605,512		)	(1,887,715		)		(1,818,672		)
Prior year reserve development	76,019				45,125			224,131				165,804
Acquisition costs	(189,810		)		(182,744		)	(559,570		)		(537,549		)
Underwriting-related general and administrative
expenses(1)	(114,223		)		(121,123		)	(352,632		)		(372,625		)
Underwriting income(2)	$	103,998		85%	$	56,245		$	212,810		(1%)	$	213,882
General and administrative expenses(1)	$	142,906			$	144,727		$	439,554			$	456,451
Income before income taxes and interest in income (loss) of equity method investments(2)	$	198,399			$	257,672		$	374,606			$	497,993

(1) Underwriting-related general and administrative expenses is a non-GAAP measure as defined in SEC Regulation G. Our total general and administrative expenses also included corporate expenses of $28,683 and $23,604 for the three months ended September 30, 2016 and 2015, respectively, and $86,922 and $83,826 for the nine months ended September 30, 2016 and 2015, respectively. Refer to 'Other Expenses (Revenues), Net' for additional information related to these corporate expenses. Also, referto 'Non-GAAP Financial Measures' for further information.

(2) Underwriting income is a non-GAAP financial measure as defined in SEC Regulation G. Refer to Item 1, Note 2 to the Consolidated Financial Statements for a reconciliation of underwriting income to the nearest GAAP financial measure (income before income taxes and interest in income (loss) of equity method investments) for the periods indicated above. Also, refer to 'Non-GAAP Financial Measures' for additional information related to the presentation of underwriting income.

49

UNDERWRITING REVENUES

Premiums Written:

Gross and net premiums written, by segment, were as follows:

	Gross Premiums Written
	Three months ended September 30,					Nine months ended September 30,
	2016		% Change	2015		2016		% Change	2015
Insurance	$	675,430	11%	$	606,704	$	2,112,796	7%	$	1,970,554
Reinsurance	284,532		(14%)	329,879		2,126,762		16%	1,833,374
Total	$	959,962	2%	$	936,583	$	4,239,558	11%	$	3,803,928
% ceded
Insurance	36%		(1) pts	37%		32%		1 pts	31%
Reinsurance	43%		33 pts	10%		13%		7 pts	6%
Total	38%		10 pts	28%		22%		3 pts	19%
	Net Premiums Written
	Three months ended September 30,					Nine months ended September 30,
	2016		% Change	2015		2016		% Change	2015
Insurance	$	433,131	14%	$	381,118	$	1,433,058	6%	$	1,352,122
Reinsurance	162,300		(45%)	296,099		1,855,529		7%	1,727,185
Total	$	595,431	(12%)	$	677,217	$	3,288,587	7%	$	3,079,307

Gross premiums written in the three and nine months ended September 30, 2016, increased by $23 million or 2% (3% on a constant currency basis⁽¹⁾) and $436 million or 11% (13% on a constant currency basis) compared to the three and nine months ended September 30, 2015, respectively. The increase for the three months ended September 30, 2016 compared to the same period in 2015 was due to an increase in the insurance segment, partially offset by a decrease in the reinsurance segment. The increase for the nine months ended September 30, 2016 compared to the same period in 2015 was due to increases in both our reinsurance and insurance segments.

Our reinsurance segment's gross premiums written decreased by $45 million or 14% (13% on a constant currency basis) and increased by $293 million, or 16% (19% on a constant currency basis) in the three and nine months ended September 30, 2016, compared to the same periods in 2015, respectively. The decrease in the reinsurance segment gross written premiums in the three months ended September 30, 2016, compared to the same period of 2015 was primarily driven by timing differences impacting our professional and liability lines. The increase in the reinsurance segment gross written premiums in the nine months ended September 30, 2016, compared to the same period of 2015 was impacted by an increase in the level of premiums written on a multi-year basis. This increase in multi-year contracts increased the amount of premium recorded in the current period relating to future years compared to the same period in 2015. The increase in the nine months ended September 30, 2016 compared to the same period in 2015 was partially offset by foreign exchange movements as the strength of the U.S. dollar drove comparative premium decreases in treaties denominated in foreign currencies. After adjusting for the impact of the multi-year contracts and foreign exchange movements, our reinsurance segment gross premiums written increased by $204 million in the nine months ended September 30, 2016, compared to the same period in 2015. The growth was driven by new business in our liability, marine and other, catastrophe, professional as well as our credit and surety lines, with favorable treaty restructurings and timing differences also contributing to increased premium written in our liability and professional lines. These increases were partially offset by a decrease in our property lines primarily driven by non-renewals and decreases in the line sizes on several treaties.

(1) Amounts presented on a constant currency basis are “non-GAAP financial measures” as defined in Regulation G. The constant currency basis is calculated by applying the average foreign exchange rate from the current year to the prior year balance.

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Our insurance segment's gross written premiums increased by $69 million or 11% (12% on a constant currency basis) and $142 million or 7% (8% on a constant currency basis) in the three and nine months ended September 30, 2016, compared to the same periods of 2015. Increased premiums written were reported in both periods in our accident and health and property lines primarily related to new business. The increase in the nine months ended September 30, 2016, compared to the same period in 2015 was partially offset by decreased premiums written in our marine lines and the impact of our exit from retail insurance operations in Australia.

In the three and nine months ended September 30, 2016, the ceded ratio increased by 10% and 3%, compared to the three and nine months ended September 30, 2015, respectively, with the increases primarily attributable to the reinsurance segment. The reinsurance segment ceded ratio increased in the three and nine months ended September 30, 2016 compared to the same periods in 2015, largely due to a new retrocessional cover entered into with Harrington Re.

Net Premiums Earned:

Net premiums earned by segment were as follows:

	Three months ended September 30,									Nine months ended September 30,
	2016				2015				% Change	2016				2015				% Change
Insurance	$	444,691	48	%	$	444,550	48	%	—%	$	1,322,649	48	%	$	1,344,339	49	%	(2%)
Reinsurance	489,724		52	%	474,791		52	%	3%	1,461,097		52	%	1,420,266		51	%	3%
Total	$	934,415	100	%	$	919,341	100	%	2%	$	2,783,746	100	%	$	2,764,605	100	%	1%

Changes in net premiums earned reflect period to period changes in net premiums written and business mix, together with normal variability in premium earning patterns.

Net premiums earned increased by 2% (4% on a constant currency basis) and 1% (4% on a constant currency basis) in the three and nine months ended September 30, 2016, compared to the same periods in 2015, respectively. The increases were driven by the reinsurance segment in both periods, with a reduction in the insurance segment for the nine months ended September 30, 2016 compared to the same period in 2015, partially offsetting the increase in the reinsurance segment.

The increase in the reinsurance segment for both periods was primarily driven by strong premium growth in our liability, marine and other as well as our catastrophe lines in recent periods together with favorable premium adjustments impacting our credit and surety lines. The growth for both periods was partially offset by increased premiums ceded in our catastrophe and property lines, as well as the impact on our liability and professional lines of the new retrocession to Harrington Re.

The decrease in the insurance segment for the nine months ended September 30, 2016, compared to the same period in 2015, was primarily driven by an increase in our professional lines' ceded reinsurance programs, decreased business written in our marine lines and the impact of our exit from retail insurance operations in Australia, partially offset by growth in premiums written in recent periods in our accident and health lines.

Other Insurance Related Income (Loss):

The increase in other insurance related income of $5 million in the three months ended September 30, 2016, compared to the same period in 2015, reflected fees from strategic capital partners and favorable fair value adjustments to economic hedges purchased to protect our agriculture line of business against fluctuations in commodity prices. The decrease in other insurance related income of $7 million in the nine months ended September 30, 2016, compared to the same period in 2015, reflected the impact of the realized gains on our weather and commodities derivative portfolio in the nine months ended September 30, 2015 compared to an immaterial impact in the nine months ended September 30, 2016, partially offset by third party capital fees and favorable fair value adjustments to economic hedges purchased to protect our agriculture line of business against fluctuations in commodity prices.

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UNDERWRITING EXPENSES

The following table provides a breakdown of our combined ratio:

	Three months ended September 30,					Nine months ended September 30,
	2016		% Point Change	2015		2016		% Point Change	2015
Current accident year loss ratio	65.1	%	(0.8)	65.9	%	67.8	%	2.0	65.8	%
Prior year reserve development	(8.1	%)	(3.2)	(4.9	%)	(8.0	%)	(2.0)	(6.0	%)
Acquisition cost ratio	20.3	%	0.4	19.9	%	20.1	%	0.7	19.4	%
General and administrative expense ratio(1)	15.3	%	(0.4)	15.7	%	15.8	%	(0.7)	16.5	%
Combined ratio	92.6	%	(4.0)	96.6	%	95.7	%	—	95.7	%

(1) The general and administrative expense ratio includes corporate expenses not allocated to reportable segments of 3.1% and 2.6% for the three months ended September 30, 2016 and 2015, respectively, and 3.1% and 3.0% for the nine months endedSeptember 30, 2016 and 2015, respectively. These costs are further discussed in the ‘Other Expenses (Revenues), Net’ section.

Current Accident Year Loss Ratio:

The current accident year loss ratio decreased to 65.1% in the three months ended September 30, 2016 from 65.9% in the same period in 2015, while the current accident year loss ratio increased to 67.8% in the nine months ended September 30, 2016 from 65.8% in the same period in 2015.

The decrease for the three months ended September 30, 2016 compared to the same period in 2015 was impacted by a lower level of catastrophe and weather-related losses and the increase for the nine months ended September 30, 2016 compared to the same period in 2015 was impacted by an increased level of catastrophe and weather-related losses. During the three and nine months ended September 30, 2016, we incurred $22 million, or 2.3 points, and $145 million, or 5.3 points, respectively, in pre-tax catastrophe and weather-related losses, net of reinstatement premiums, attributable to the weather-related events, Fort McMurray wildfires, the Japanese and Ecuadorian earthquakes, North Calgary hailstorm and European floods. Comparatively, during the three and nine months ended September 30, 2015 we incurred $43 million, or 4.7 points, and $90 million, or 3.3 points, respectively.

After adjusting for the impact of the catastrophe and weather-related losses, our current accident year loss ratios in the three and nine months ended September 30, 2016, were 62.8% and 62.5%, respectively, compared to 61.2% and 62.5% in the three and nine months ended September 30, 2015, respectively. The increase in the current accident year loss ratios after adjusting for the impact of the catastrophe and weather-related losses for the three months ended September 30, 2016, compared to the same period in 2015, was mainly due to business mix changes as well as the ongoing adverse impact of rate and trend, partially offset by a decrease in the mid-size loss experience in our insurance marine and property lines. The current accident year loss ratio after adjusting for the impact of the catastrophe and weather-related losses for the nine months ended September 30, 2016 was comparable to the same periods in 2015. The adverse impact of rate and trend together with business mix changes were offset by a decrease in the mid-size loss experience in our insurance marine and property lines.

Prior Year Reserve Development:

Our favorable prior year reserve development was the net result of several underlying reserve developments on prior accident years, identified during our quarterly reserve review process. The following table provides a breakdown of prior year reserve development by segment:

	Three months ended September 30,				Nine months ended September 30,
	2016		2015		2016		2015
Insurance	$	20,688	$	2,444	$	43,181	$	21,225
Reinsurance	55,331		42,681		180,950		144,579
Total	$	76,019	$	45,125	$	224,131	$	165,804

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Overview

The majority of the net favorable prior year reserve development in each period related to short-tail reserve classes. Net favorable prior year reserve development for professional, reinsurance liability and motor reserve classes also contributed in the three and nine months ended September 30, 2016.

Our short tail business includes the underlying exposures in the property and other, marine and aviation reserving classes within our insurance segment and the property and other reserving class within our reinsurance segment . Development from these classes contributed $41 million and $38 million of the total net favorable prior year reserve development for the three months ended September 30,2016 and 2015, respectively. For the nine months ended September 30, 2016 and 2015, these short-tail lines contributed $116 million and $112 million, respectively, of net favorable prior year reserve development. The net favorable prior year reserve development for these classes primarily reflected the recognition of better than expected loss emergence.

Our medium-tail business consists primarily of professional insurance and reinsurance reserve classes, credit and political risk insurance reserve class and the credit and surety reinsurance reserve class. In the three and nine months ended September 30, 2016, the professional reserve classes contributed net favorable prior year reserve development of $12 million and $28 million, respectively. In the nine months ended September 30, 2015, the reinsurance professional reserve class contributed $25 million of net favorable development. The net favorable prior year development on these reserve classes continued to reflect the generally favorable experience on earlier accident years as we continued to transition to more experience based methods on these years. As our loss experience has generally been better than expected, this resulted in the recognition of net favorable prior year reserve development. In the three and nine months ended September 30, 2015, the insurance professional reserve class recorded net adverse prior year reserve development of $15 million and $16 million, respectively. This adverse development was primarily the result of strengthening in our Australian book of business during the third quarter of 2015.

In the three and nine months ended September 30, 2015, the credit and surety reserve class recorded net favorable prior year reserve development of $7 million and $19 million, respectively. This net favorable prior year reserve development reflected the recognition of generally better than expected loss emergence.

In the nine months ended September 30, 2015, we recorded net adverse prior year reserve development of $15 million in our credit and political risk reserve class relating to an increase in our loss portfolio estimates.

Our long-tail business consists primarily of liability and motor reserve classes. Our motor and liability reinsurance reserve classes contributed additional net favorable prior year reserve development of $17 million and $20 million in the three months ended September 30, 2016 and 2015, respectively. For the nine months ended September 30, 2016 and 2015, these long-tail reserve classes contributed $72 million and $64 million, respectively. The net favorable prior year reserve development for the motor reserve class related to favorable loss emergence trends on several classes of business spanning multiple accident years. The net favorable prior year reserve development for the liability reinsurance reserve class primarily reflected the progressively increased weight given by management to experience based indications on older accident years, which has generally been favorable. In the three and nine months ended September 30, 2015, we recorded net adverse prior year reserve development of $6 million and $23 million, respectively, in our insurance liability reserve class related primarily to an increase in loss estimates for specific individual claim reserves, as well as a higher frequency of large auto liability claims.

We caution that conditions and trends that impacted the development of our liabilities in the past may not necessarily occur in the future.

Estimates of Significant Catastrophe Events

Our September 30, 2016 net reserves for losses and loss expenses includes estimated amounts for numerous catastrophe events. We caution that the magnitude and/or complexity of losses arising from certain of these events, in particular the Fort McMurray wildfires, Storm Sandy, the 2011 Japanese earthquake and tsunami, the three New Zealand earthquakes and the Tianjin port explosion, inherently increases the level of uncertainty and, therefore, the level of management judgment involved in arriving at our estimated net reserves for losses and loss expenses. As a result, our actual losses for these events may ultimately differ materially from our current estimates.

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Our estimated net losses in relation to the catastrophe events described above were derived from ground-up assessments of our in-force contracts and treaties providing coverage in the affected regions. These assessments take into account the latest information available from clients, brokers and loss adjusters. In addition, we consider industry insured loss estimates, market share analyses and catastrophe modeling analyses, when appropriate. Our estimates remain subject to change, as additional loss data becomes available.

The following sections provide further details on prior year reserve development by segment, reserving class and accident year.

Insurance Segment:

	Three months ended September 30,						Nine months ended September 30,
	2016			2015			2016			2015
Property and other	$	10,061		$	20,518		$	24,048		$	49,705
Marine	4,682			2,831			8,382			23,156
Aviation	517			667			437			2,884
Credit and political risk	(25		)	(28		)	(232		)	(15,427		)
Professional lines	3,378			(15,279		)	8,956			(15,887		)
Liability	2,075			(6,265		)	1,590			(23,206		)
Total	$	20,688		$	2,444		$	43,181		$	21,225

In the three months endedSeptember 30, 2016, we recognized $21 million of net favorable prior year reserve development, the principal components of which were: 

• $10 million of net favorable prior year reserve development on property and other business, driven by better than expected loss emergence, primarily driven by reductions in mid-size loss estimates impacting accident year 2015 and favorable loss experience in our accident and health lines impacting accident year 2014.

• $5 million of net favorable prior year reserve development on marine business, driven by better than expected loss emergence, primarily driven by reductions in mid-size loss estimates impacting accident year 2015.

In the three months endedSeptember 30, 2015, we recognized $2 million of net favorable prior year reserve development, the principal components of which were: 

• $21 million of net favorable prior year reserve development on property and other business, driven by better than expected loss emergence including reserve reductions related to Storm Sandy of $15 million.

• $6 million of net adverse prior year reserve development on liability business, primarily related to a higher frequency of large auto liability claims in accident year 2014.

• $15 million of net adverse prior year reserve development on professional lines business, predominately reflecting reserve strengthening resulting from updated actuarial assumptions for our Australian professional lines and impacting accident years 2010 to 2014, partially offset by favorable development in certain US professional lines.

In the nine months endedSeptember 30, 2016, we recognized $43 million of net favorable prior year reserve development, the principal components of which were:

• $24 million of net favorable prior year reserve development on property and other business, driven by better than expected loss emergence primarily related to accident year 2014.

• $9 million of net favorable prior year reserve development on professional lines business, driven by better than expected development related to various accident years, partially offset by reserve strengthening relating to updated information on one specific claim impacting accident year 2010.

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• $8 million of net favorable prior year reserve development on marine business, driven by better than expected loss emergence, primarily driven by reductions in mid-size loss estimates impacting accident year 2015.

In the nine months endedSeptember 30, 2015, we recognized $21 million of net favorable prior year development, the principal components of which were:

• $50 million of net favorable prior year reserve development on property and other business, related to the 2012 and 2013 accident years and driven by better than expected loss emergence, including reserve reductions related to Storm Sandy of $16 million.

• $23 million of net favorable prior year reserve development on marine business, largely related to better than expected loss emergence in our energy offshore business spanning multiple years, particularly accident year 2014.

• $15 million of net adverse prior year reserve development on credit and political risk business, related to updated information on one specific claim impacting accident year 2014.

• $16 million of net adverse prior year reserve development on professional lines business, predominately reflecting reserve strengthening resulting from updated actuarial assumptions for our Australian professional lines and impacting accident years 2010 to 2014, partially offset by favorable development in certain US professional lines.

• $23 million of net adverse prior year reserve development on liability business, related to strengthening of specific individual claim reserves and a higher frequency of large auto liability claims in accident year 2014.

Reinsurance Segment:

	Three months ended September 30,				Nine months ended September 30,
	2016		2015		2016		2015
Property and other	$	25,831	$	14,115	$	83,522	$	36,120
Credit and surety	3,900		7,051		6,761		18,851
Professional lines	8,761		1,250		18,918		25,331
Motor	6,653		8,997		39,794		27,321
Liability	10,186		11,268		31,955		36,956
Total	$	55,331	$	42,681	$	180,950	$	144,579

In the three months endedSeptember 30, 2016, we recognized $55 million of net favorable prior year reserve development, the principal components of which were:

• $26 million of net favorable prior year reserve development on property and other business, related to the 2011 through 2015 accident years driven by better than expected loss emergence including a reserve reduction of $7 million related to Storm Sandy.

• $10 million of net favorable prior year reserve development on liability business, primarily related to the 2007 through 2010 accident years, for reasons discussed in the overview.

• $9 million of net favorable prior year reserve development on professional lines business, primarily related to the 2005 through 2010 accident years, for reasons discussed in the overview.

• $7 million of net favorable prior year reserve development on motor business, related to non-proportional business spanning multiple accident years, driven by better than expected loss emergence.

In the three months endedSeptember 30, 2015, we recognized $43 million of net favorable prior year reserve development, the principal components of which were:

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• $14 million of net favorable prior year reserve development on property and other business, related to multiple prior accident years and driven by better than expected loss emergence.

• $11 million of net favorable prior year reserve development on liability business, primarily related to the 2003 through 2010 accident years, for reasons discussed in the overview.

• $9 million of net favorable prior year reserve development on motor business, largely related to favorable loss emergence trends on several classes spanning multiple accident years.

• $7 million of net favorable prior year reserve development on credit and surety business, related to the 2012 accident year and driven by additional information obtained about a specific claim.

In the nine months endedSeptember 30, 2016, we recognized $181 million of net favorable prior year reserve development, the principal components of which were:

• $84 million of net favorable prior year development on property and other business, primarily related to the 2010 through 2015 accident years driven by better than expected loss emergence.

• $40 million of net favorable prior year reserve development on motor business, primarily related to non-proportional business spanning multiple accident years, driven by better than expected loss emergence.

• $32 million of net favorable prior year reserve development on liability business, primarily related to the 2006 through 2011 accident years, for reasons discussed in the overview.

• $19 million of net favorable prior year reserve development on professional lines business, primarily related to the 2005 through 2010 accident years, for reasons discussed in the overview.

In the nine months endedSeptember 30, 2015, we recognized $145 million of net favorable prior year reserve development, the principal components of which were:

• $37 million of net favorable prior year reserve development on liability business, primarily related to the 2003 through 2010 accident years, for reasons discussed in the overview.

• $36 million of net favorable prior year reserve development on property and other business, spanning a number of accident years and driven by better than expected loss emergence. Included in this net development is $20 million of adverse development on agriculture reserves relating to loss developments on the 2014 accident year driven by lower than expected crop yields reported for two specific treaties.

• $27 million of net favorable prior year reserve development on motor business, predominantly related to non-proportional business in accident years 2011 and prior, driven by better than expected loss emergence.

• $25 million of net favorable prior year reserve development on professional lines business, primarily related to the 2009 through 2010 accident years, for reasons discussed in the overview.

• $19 million of net favorable prior year reserve development on credit and surety business, spanning multiple accident years and driven by better than expected loss emergence, as well as additional information obtained about a specific claim.

Acquisition Cost Ratio: The increase in the acquisition cost ratio in the three and nine months endedSeptember 30, 2016 to 20.3% and 20.1%, respectively, compared to 19.9% and 19.4% in the three and nine months endedSeptember 30, 2015, respectively, was driven by increases in our reinsurance segment. The reinsurance segment's increase in the three months ended September 30, 2016 compared to the same period in 2015 was primarily due to the impact of retrocessional contracts, an increase in the amount of business being written on a proportional basis, higher acquisition costs in certain lines of business and fees from strategic capital partners which were a benefit in 2015. The reinsurance segment's increase in the nine months ended September 30, 2016 compared to the same period in 2015 was primarily due to an increase in the amount of business being written on a proportional basis, higher acquisition costs in certain lines of business and the impact of retrocessional contracts.

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General and Administrative Expense Ratio: The general and administrative expense ratio in the three and nine months ended September 30, 2016, decreased to 15.3% and 15.8%, respectively, compared to 15.7% and 16.5% in the three and nine months endedSeptember 30, 2015, respectively. The decrease in the expense ratio in the three months ended September 30, 2016 compared to the same period in 2015 was primarily attributable to growth in net premiums earned, reorganization related expenses adverse to 2015 and increased fees from strategic capital partners, partially offset by the net reimbursement of PartnerRe merger-related expenses benefiting 2015 and senior executive transition costs in 2016. The decrease in the expense ratio in the nine months ended September 30, 2016 compared to the same period in 2015 was primarily driven by growth in net earned premiums, increased fees from strategic capital partners, decreased personnel costs and expenses attributable to the proposed merger with PartnerRe and reorganization related expenses adverse to 2015, partially offset by adjustments to senior leadership executive stock-compensation awards benefiting 2015 and senior executive transition costs in 2016.

RESULTS BY SEGMENT

INSURANCE SEGMENT

Results from our insurance segment were as follows:

	Three months ended September 30,							Nine months ended September 30,
	2016			% Change	2015			2016			% Change	2015
Revenues:
Gross premiums written	$	675,430		11%	$	606,704		$	2,112,796		7%	$	1,970,554
Net premiums written	433,131			14%	381,118			1,433,058			6%	1,352,122
Net premiums earned	444,691			—%	444,550			1,322,649			(2%)	1,344,339
Other insurance related income (loss)	39			(93%)	542			(57		)	nm	811
Expenses:
Current year net losses and loss expenses	(293,914		)		(285,716		)	(896,952		)		(887,805		)
Prior year reserve development	20,688				2,444			43,181				21,225
Acquisition costs	(61,755		)		(69,118		)	(184,982		)		(200,493		)
General and administrative expenses	(84,588		)		(85,814		)	(252,652		)		(261,924		)
Underwriting income	$	25,161		265%	$	6,888		$	31,187		93%	$	16,153
Ratios:				% Point Change							% Point Change
Current year loss ratio	66.1		%	1.8	64.3		%	67.8		%	1.8	66.0		%
Prior year reserve development	(4.7		%)	(4.1)	(0.6		%)	(3.2		%)	(1.7)	(1.5		%)
Acquisition cost ratio	13.9		%	(1.6)	15.5		%	14.0		%	(0.9)	14.9		%
General and administrative expense ratio	19.1		%	(0.3)	19.4		%	19.0		%	(0.5)	19.5		%
Combined ratio	94.4		%	(4.2)	98.6		%	97.6		%	(1.3)	98.9		%

nm – not meaningful

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Gross Premiums Written:

The following table provides gross premiums written by line of business:

	Three months ended September 30,									Nine months ended September 30,
	2016				2015				% Change	2016				2015				% Change
Property	$	164,605	25	%	$	139,488	24	%	18%	$	522,380	24	%	$	465,929	24	%	12%
Marine	33,677		5	%	38,817		6	%	(13%)	191,298		9	%	215,885		11	%	(11%)
Terrorism	9,394		1	%	11,192		2	%	(16%)	28,090		1	%	25,737		1	%	9%
Aviation	9,684		1	%	10,222		2	%	(5%)	37,111		2	%	29,755		2	%	25%
Credit and Political Risk	5,423		1	%	8,542		1	%	(37%)	34,299		2	%	29,640		2	%	16%
Professional Lines	204,926		30	%	196,218		32	%	4%	590,417		28	%	598,370		30	%	(1%)
Liability	108,447		16	%	104,666		17	%	4%	310,797		15	%	300,204		15	%	4%
Accident and Health	139,274		21	%	97,559		16	%	43%	398,404		19	%	305,034		15	%	31%
Total	$	675,430	100	%	$	606,704	100	%	11%	$	2,112,796	100	%	$	1,970,554	100	%	7%

Gross premiums written in the three months ended September 30, 2016, increased by $69 million or 11% (12% on a constant currency basis) compared to the three months ended September 30, 2015. The increase was primarily attributable to growth in our accident and health and property lines related to new business opportunities.

Gross premiums written in the nine months ended September 30, 2016 increased by $142 million or 7% (8% on a constant currency basis) compared to the nine months ended September 30, 2015. The increase was primarily attributable to increases in our accident and health and property lines driven by new business. These increases were partially offset by a decrease in our marine and professional lines. Our marine lines decreased primarily due to reduced new business opportunities, lower rates and timing differences. The professional lines' decrease was due to the impact of our exit from retail insurance operations in Australia, as mentioned above in the quarterly results.

Premiums Ceded: In the three and nine months ended September 30, 2016, premiums ceded were $242 million, or 36% of gross premiums written and $680 million, or 32% of gross premiums written, respectively, compared to $226 million, or 37% of gross premiums written and $618 million or 31% of gross premiums written, in the three and nine months ended September 30, 2015, respectively. The decrease in the ceded ratio for the three months ended September 30, 2016 compared to the same period in 2015 was primarily driven by changes in our accident and health line, partially offset by increased premiums ceded in our liability and professional lines. The increase in the ceded ratio for the nine months ended September 30, 2016 compared to the same period in 2015 was primarily driven by increased ceded premiums in our professional lines, partially offset by changes in our accident and health line.

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Net Premiums Earned:

The following table provides net premiums earned by line of business:

	Three months ended September 30,									Nine months ended September 30,
	2016				2015				% Change	2016				2015				% Change
Property	$	106,578	25	%	$	112,017	27	%	(5%)	$	312,804	23	%	$	324,720	24	%	(4%)
Marine	36,218		8	%	36,837		8	%	(2%)	113,693		9	%	143,878		11	%	(21%)
Terrorism	8,276		2	%	7,985		2	%	4%	26,011		2	%	26,565		2	%	(2%)
Aviation	9,015		2	%	9,982		2	%	(10%)	33,528		3	%	32,097		2	%	4%
Credit and Political Risk	12,274		3	%	14,671		3	%	(16%)	42,661		3	%	45,993		3	%	(7%)
Professional Lines	126,574		28	%	148,110		33	%	(15%)	386,241		29	%	451,944		34	%	(15%)
Liability	42,205		9	%	41,817		9	%	1%	126,429		10	%	120,181		9	%	5%
Accident and Health	103,551		23	%	73,131		16	%	42%	281,282		21	%	198,961		15	%	41%
Total	$	444,691	100	%	$	444,550	100	%	—%	$	1,322,649	100	%	$	1,344,339	100	%	(2%)

Net premiums earned in the three months ended September 30, 2016, were comparable (up 2% on a constant currency basis) to the three months ended September 30, 2015, driven by growth in premiums written in recent periods, primarily in our accident and health lines, offset by an increase in our professional lines' ceded reinsurance programs. Net premiums earned in the nine months ended September 30, 2015 decreased by $22 million or 2% (comparable on a constant currency basis) compared to the nine months ended September 30, 2015. The decrease in net premiums earned in the nine months ended September 30, 2016 compared to the same period in 2015 was primarily driven by an increase in our professional lines' ceded reinsurance programs, a reduction in business written in our marine lines and the impact of our exit from retail insurance operations in Australia partially offset by growth in our accident and health lines.

Loss Ratio:

The table below shows the components of our loss ratio:

	Three months ended September 30,					Nine months ended September 30,
	2016		% Point Change	2015		2016		% Point Change	2015
Current accident year	66.1	%	1.8	64.3	%	67.8	%	1.8	66.0	%
Prior year reserve development	(4.7	%)	(4.1)	(0.6	%)	(3.2	%)	(1.7)	(1.5	%)
Loss ratio	61.4	%	(2.3)	63.7	%	64.6	%	0.1	64.5	%

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Current Accident Year Loss Ratio:

The current accident year loss ratios increased to 66.1% and 67.8% in the three and nine months ended September 30, 2016, respectively, from 64.3% and 66.0% in the three and nine months ended September 30, 2015, respectively.

During the three and nine months ended September 30, 2016, we incurred $15 million, or 3.3 points, and $73 million, or 5.5 points, respectively, in pre-tax catastrophe and weather-related losses related to the U.S. weather events, Japanese earthquake and Fort McMurray wildfires. Comparatively, during the three and nine months ended September 30, 2015 we incurred $19 million, or 4.3 points, and $45 million, or 3.4 points, respectively.

After adjusting for the impact of the catastrophe and weather-related losses, our current accident year loss ratios in the three and nine months ended September 30, 2016, were62.8% and 62.3%, respectively, compared to 60.0% and 62.7% in the three and nine months ended September 30, 2015, respectively. The increases in the current accident year loss ratios after adjusting for the impact of the catastrophe and weather-related losses for the three and nine months ended September 30, 2016 compared to the same periods in 2015 was driven by the adverse impact of rate and trend on most lines of business and changes in business mix, partially offset by a decrease in the mid-size loss experience particularly in our marine and property lines.

Refer to the ‘Prior Year Reserve Development’ section for further details.

Acquisition Cost Ratio: The decrease in the acquisition cost ratio in the three and nine months ended September 30, 2016 compared to the three and nine months ended September 30, 2015, was driven by an increase in ceding commissions following the expansion of our professional lines' ceded reinsurance programs and a lower acquisition cost ratio in our accident and health line resulting from a change in business mix.

General and Administrative Expense Ratio: The decrease in the general and administrative expense ratio in the nine months ended September 30, 2016 compared nine months ended September 30, 2015 primarily reflected a decrease in personnel expenses and a reduction in the allocation of certain corporate expenses.

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REINSURANCE SEGMENT

Results from our reinsurance segment were as follows:

	Three months ended September 30,							Nine months ended September 30,
	2016			% Change	2015			2016			% Change	2015
Revenues:
Gross premiums written	$	284,532		(14%)	$	329,879		$	2,126,762		16%	$	1,833,374
Net premiums written	162,300			(45%)	296,099			1,855,529			7%	1,727,185
Net premiums earned	489,724			3%	474,791			1,461,097			3%	1,420,266
Other insurance related income	5,905			nm	616			4,907			(57%)	11,508
Expenses:
Current year net losses and loss expenses	(314,433		)		(319,796		)	(990,763		)		(930,867		)
Prior year reserve development	55,331				42,681			180,950				144,579
Acquisition costs	(128,055		)		(113,626		)	(374,588		)		(337,056		)
General and administrative expenses	(29,635		)		(35,309		)	(99,980		)		(110,701		)
Underwriting income	$	78,837		60%	$	49,357		$	181,623		(8%)	$	197,729
Ratios:				% Point Change							% Point Change
Current year loss ratio	64.2		%	(3.2)	67.4		%	67.8		%	2.3	65.5		%
Prior year reserve development	(11.3		%)	(2.3)	(9.0		%)	(12.4		%)	(2.3)	(10.1		%)
Acquisition cost ratio	26.1		%	2.2	23.9		%	25.6		%	1.9	23.7		%
General and administrative expense ratio	6.1		%	(1.3)	7.4		%	6.9		%	(0.9)	7.8		%
Combined ratio	85.1		%	(4.6)	89.7		%	87.9		%	1.0	86.9		%

nm – not meaningful

Gross Premiums Written:

The following table provides gross premiums written by line of business for the periods indicated:

	Three months ended September 30,										Nine months ended September 30,
	2016				2015					%  Change	2016				2015				%  Change
Catastrophe	$	46,338	16	%	$	56,693		18	%	(18%)	$	316,692	15	%	$	283,562	15	%	12%
Property	61,957		22	%	67,539			20	%	(8%)	283,555		13	%	307,809		17	%	(8%)
Professional Lines	19,479		7	%	45,509			14	%	(57%)	235,094		11	%	204,685		11	%	15%
Credit and Surety	36,174		13	%	23,390			7	%	55%	315,102		15	%	230,958		13	%	36%
Motor	13,344		5	%	21,359			6	%	(38%)	338,403		16	%	333,245		18	%	2%
Liability	91,387		32	%	111,361			34	%	(18%)	365,380		17	%	258,862		14	%	41%
Agriculture	1,286		—	%	(3,303		)	(1	%)	nm	151,315		7	%	139,135		8	%	9%
Engineering	13,588		5	%	4,397			1	%	209%	56,719		3	%	58,163		3	%	(2%)
Marine and Other	979		—	%	2,934			1	%	(67%)	64,502		3	%	16,955		1	%	280%
Total	$	284,532	100	%	$	329,879		100	%	(14%)	$	2,126,762	100	%	$	1,833,374	100	%	16%

Gross premiums written decreased by $45 million and increased by $293 million in the three and nine months ended September 30, 2016, compared to the same periods in 2015, respectively.

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The decrease in gross premiums written in the three months ended September 30, 2016 compared to the same period in 2015, was primarily driven by our professional and liability lines, largely due to timing differences.

The increase in gross premiums written in the nine months ended September 30, 2016 compared to the same period in 2015, was impacted by treaties written on a multi-year basis. In the nine months ended September 30, 2016, the reinsurance segment reported an increase in the level of multi-year contracts written compared to the same period in 2015. This increase in multi-year contracts increased the amount of premium recorded in the current periods relating to future years compared to the same periods in 2015, most notably in the credit & surety and liability lines. On a comparative basis the impact of the multi-year premiums resulted in an increase in gross premiums written of $141 million in the nine months ended September 30, 2016, compared to the same period in 2015. The increase in written premiums was partially offset by the impact of foreign exchange movements in the nine months ended September 30, 2016, compared to the same period in 2015, as the strength of the U.S. dollar drove comparative premium decreases in the treaties denominated in foreign currencies. Foreign exchange movements resulted in a relative decrease of $52 million in gross premiums written in the nine months ended September 30, 2016, compared to the same period in 2015.

After adjusting for the impact of multi-year contracts and on a constant currency basis, our gross premiums written increased by $204 million, or 11% in the nine months ended September 30, 2016, compared to the same period in 2015. The growth was driven by increases in our liability, marine and other, catastrophe, professional as well as our credit and surety lines primarily driven by new business. Favorable treaty restructurings and timing differences also contributed to the increases in liability and professional lines. These increases were partially offset by a decrease in our property lines, primarily relating to non-renewals and decreases in line sizes on several treaties.

Premiums Ceded: In the three and nine months ended September 30, 2016, the ratio of ceded premium to gross written premium increased to 43% and 13%, respectively, from 10% and 6% in the three and nine months ended September 30, 2015, respectively. The increase for the three months ended September 30, 2016 compared to the prior period, was due to the impact of a new retrocessional cover entered into with Harrington Re which increased premiums ceded in our liability and professional lines. The increase for the nine months ended September 30, 2016 compared to the prior period was largely due to the new retrocessions to Harrington Re and increased premiums ceded in our catastrophe and property business.

Net Premiums Earned:

The following table provides net premiums earned by line of business:

	Three months ended September 30,									Nine months ended September 30,
	2016				2015				% Change	2016				2015				% Change
Catastrophe	$	48,799	10	%	$	51,116	11	%	(5%)	$	151,416	12	%	$	165,840	12	%	(9%)
Property	71,649		15	%	78,343		17	%	(9%)	208,179		14	%	235,828		17	%	(12%)
Professional Lines	73,109		15	%	81,986		17	%	(11%)	225,813		15	%	231,024		16	%	(2%)
Credit and Surety	67,430		14	%	59,601		13	%	13%	192,135		13	%	182,508		13	%	5%
Motor	77,786		16	%	72,893		15	%	7%	232,383		16	%	228,433		16	%	2%
Liability	80,137		16	%	77,441		16	%	3%	247,103		17	%	218,829		15	%	13%
Agriculture	36,704		7	%	33,684		7	%	9%	106,251		7	%	101,335		7	%	5%
Engineering	18,573		4	%	15,128		3	%	23%	51,024		3	%	43,133		3	%	18%
Marine and Other	15,537		3	%	4,599		1	%	238%	46,793		3	%	13,336		1	%	251%
Total	$	489,724	100	%	$	474,791	100	%	3%	$	1,461,097	100	%	$	1,420,266	100	%	3%

Net premiums earned increased by $15 million or 3% (7% on a constant currency basis) and $41 million or 3% (7% on a constant currency basis) in the three and nine months endedSeptember 30, 2016, compared to the same periods in 2015, respectively.

The increase for both periods was primarily driven by the growth in the business written in our liability, marine and other as well as our catastrophe lines in recent periods together with a favorable premium adjustments impacting our credit and surety lines. The growth for both periods was partially offset by increased premiums ceded in our catastrophe and property lines, as well as the impact on our liability and professional lines of the new retrocession to Harrington Re.

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Other Insurance Related Income (Losses):

The increase in other insurance related income of $5 million in the three months ended September 30, 2016, compared to the same period in 2015, reflected fees from strategic capital partners and favorable fair value adjustments to economic hedges purchased to protect our agriculture line of business against fluctuations in commodity prices. The decrease in other insurance related income of $7 million in the nine months ended September 30, 2016, compared to the same period in 2015, reflected the impact of the realized gains on our weather and commodities derivative portfolio in the nine months ended September 30, 2015 compared to an immaterial impact in the nine months ended September 30, 2016, partially offset by fees from strategic capital partners and favorable fair value adjustments to economic hedges purchased to protect our agriculture line of business against fluctuations in commodity prices.

Loss Ratio:

The table below shows the components of our loss ratio:

	Three months ended September 30,					Nine months ended September 30,
	2016		% Point Change	2015		2016		% Point Change	2015
Current accident year	64.2	%	(3.2)	67.4	%	67.8	%	2.3	65.5	%
Prior year reserve development	(11.3	%)	(2.3)	(9.0	%)	(12.4	%)	(2.3)	(10.1	%)
Loss ratio	52.9	%	(5.5)	58.4	%	55.4	%	—	55.4	%

Current Accident Year Loss Ratio:

The current accident year loss ratio decreased to 64.2% in the three months ended September 30, 2016 from 67.4% in the same period in 2015, while the current accident year loss ratio increased to 67.8% in the nine months ended September 30, 2016 from 65.5% in the same period in 2015.

The decrease for the three months ended September 30, 2016 compared to the same period in 2015 was impacted by a lower level of catastrophe and weather-related losses and the increase for the nine months ended September 30, 2016 compared to the same period in 2015 was impacted by an increased level of catastrophe and weather-related losses. During the three and nine months ended September 30, 2016, we incurred $7 million, or 1.5 points, and $72 million, or 5.0 points, respectively, in pre-tax catastrophe and weather-related losses, net of reinstatement premiums, attributable to the weather-related events, Fort McMurray wildfires, the Japanese and Ecuadorian earthquakes, North Calgary hailstorm and European floods. Comparatively, during the three and nine months ended September 30, 2015 we incurred $24 million, or 5.1 points, and $45 million, or 3.2 points, respectively.

After adjusting for the impact of the catastrophe and weather-related losses, our current accident year loss ratios in the three and nine months ended September 30, 2016, were 62.7% and 62.8%, respectively, compared to 62.3% in both the three and nine months ended September 30, 2015. The increases in the current accident year loss ratios after adjusting for the impact of the catastrophe and weather-related losses for the three and nine months ended September 30, 2016 compared to the same periods in 2015 was mainly due to the ongoing adverse impact of rate and trend, partially offset by the recognition of better than expected recent attritional loss experience across our long tail lines of business.

Refer ‘Prior Year Reserve Development’ for further details. 

Acquisition Cost Ratio: The acquisition cost ratio increased in both the three and nine months endedSeptember 30, 2016 compared to the same periods in 2015. The increase in the three months ended September 30, 2016 was primarily due to the impact of retrocessional contracts, an increase in the amount of business being written on a proportional basis together with higher acquisition costs in certain lines of business and fees from strategic capital partners which were a benefit in 2015. The increase in the nine months ended September 30, 2016 compared to the same period in 2015 was primarily due to an increase in the amount of business being written on a proportional basis, higher acquisition costs in certain lines of business and the impact of retrocessional contracts.

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General and Administrative Expense Ratio: The general and administrative expense ratio decreased in both the three and nine months ended September 30, 2016 compared to the same periods in 2015. The decrease in the general and administrative expense ratio primarily reflects lower personnel expense, benefits of arrangements with our strategic capital partners and the impact of increased net earned premiums.

OTHER EXPENSES (REVENUES), NET

The following table provides a breakdown of our other expenses (revenues), net:

	Three months ended September 30,							Nine months ended September 30,
	2016			% Change	2015			2016			% Change	2015
Corporate expenses	$	28,683		22%	$	23,604		$	86,922		4%	$	83,826
Foreign exchange gains	(13,795		)	(51%)	(28,088		)	(69,781		)	1%	(69,200		)
Interest expense and financing costs	12,839			(1%)	12,918			38,586			1%	38,114
Income tax expense	9,352			nm	30			7,712			nm	1,155
Total	$	37,079		nm	$	8,464		$	63,439		18%	$	53,895

nm – not meaningful

Corporate Expenses: Our corporate expenses include holding company costs necessary to support our worldwide insurance and reinsurance operations and costs associated with operating as a publicly-traded company. As a percentage of net premiums earned, corporate expenses were 3.1% for the three and nine months endedSeptember 30, 2016, compared to 2.6% and 3.0%, respectively, for the same periods of 2015. The increase in corporate expenses in the three month period ended September 30, 2016 is primarily attributable to the net reimbursement of PartnerRe merger-related expenses benefiting 2015 and senior executive transition costs in 2016, partially offset by reorganization related expenses adverse to 2015. The slight increase in corporate expenses in the nine month period ended September 30, 2016 is attributable to adjustments to senior leadership executive stock-compensation awards benefiting 2015, senior executive transition costs in 2016 and an increase in personnel costs in 2016, partially offset by expenses attributable to the proposed merger with PartnerRe and reorganization related expenses adverse to 2015.

Foreign Exchange Gains: Some of our business is written in currencies other than the U.S. dollar. The foreign exchange gains for the periods presented were largely driven by the re-measurement of our net insurance related liabilities. The foreign exchange gains for the three and nine months endedSeptember 30, 2016 were primarily driven by the depreciation of pound sterling against the U.S dollar. Comparatively, the foreign exchange gains for the three months ended September 30, 2015 were primarily driven by depreciation of the pound sterling and the Australian dollar against the U.S. dollar. The foreign exchange gains for the nine months ended September 30, 2015 were primarily driven by the depreciation of the euro, pound sterling and Australian dollar.

Income Tax Expense: Income tax expense primarily results from income generated by our foreign operations in the United States and Europe. Our effective tax rate, which is calculated as income tax expense divided by net income before tax including interest in loss of equity method investments, was 4.8% and 2.1% in the three and nine months endedSeptember 30, 2016, and was insignificant and 0.2% in the three and nine months endedSeptember 30, 2015. This effective rate can vary between periods depending on the distribution of net income amongst tax jurisdictions, as well as other factors. The primary driver of the current quarter and year-to-date increase is the generation of consolidated pre-tax net income in our operations in Europe compared to a net loss in each of these periods in 2015.

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NET INVESTMENT INCOME AND NET REALIZED INVESTMENT GAINS (LOSSES)

Net Investment Income

The following table provides a breakdown of income earned from our cash and investment portfolio by major asset class:

	Three months ended September 30,							Nine months ended September 30,
	2016			% Change	2015			2016			% Change	2015
Fixed maturities	$	75,827		—%	$	75,980		$	229,423		4%	$	220,066
Other investments	38,248			nm	(27,421		)	25,770			46%	17,616
Equity securities	4,633			34%	3,445			12,843			65%	7,795
Mortgage loans	2,191			nm	482			5,683			nm	776
Cash and cash equivalents	3,768			nm	993			7,071			88%	3,770
Short-term investments	337			nm	83			708			156%	277
Gross investment income	125,004			133%	53,562			281,498			12%	250,300
Investment expense	(8,081		)	3%	(7,877		)	(23,680		)	(1%)	(23,964		)
Net investment income	$	116,923		156%	$	45,685		$	257,818		14%	$	226,336
Pre-tax yield:(1)
Fixed maturities	2.7%				2.5%			2.6%				2.4%

nm - not meaningful

(1) Pre-tax yield is annualized and calculated as net investment income divided by the average month-end amortized cost balances for the periods indicated.

Fixed Maturities

The net investment income increase for the nine months ended September 30, 2016 attributable to fixed maturities was due to an emphasis on longer duration assets and an improvement in CPI adjustments following a reduction in our exposure to treasury inflation-protected securities.

Other Investments

The following table provides a breakdown of total net investment income from other investments:

	Three months ended September 30,						Nine months ended September 30,
	2016			2015			2016			2015
Hedge, direct lending, private equity and real estate funds	$	29,459		$	(23,483	)	$	6,127		$	10,357
Other privately held investments	370			—			177			—
CLO - Equities	8,419			(3,938		)	19,466			7,259
Total net investment income from other investments	$	38,248		$	(27,421	)	$	25,770		$	17,616
Pre-tax return on other investments(1)	4.5		%	(3.3		%)	3.1		%	2.0		%

(1) The pre-tax return on other investments is non-annualized and calculated by dividing total net investment income from other investments by the average month-end fair value balances held for the periods indicated.

The total net investment income from other investments increased for the three and nine months ended September 30, 2016 compared to the same periods in 2015 due to an improvement in the performance of the global equity markets which translated into higher valuations on our hedge funds. CLO - Equities also benefited from an increase in the valuation of the underlying collateral balances.

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Net Realized Investment Gains (Losses)

The following table provides a breakdown of net realized investment gains (losses):

	Three months ended September 30,						Nine months ended September 30,
	2016			2015			2016			2015
On sale of investments:
Fixed maturities and short-term investments	$	4,303		$	(42,741	)	$	(22,869	)	$	(66,579	)
Equity securities	4,994			(1,327		)	2,881			(1,505		)
	9,297			(44,068		)	(19,988		)	(68,084		)
OTTI charges recognized in earnings	(4,247		)	(32,301		)	(20,346		)	(62,762		)
Change in fair value of investment derivatives	155			6,412			39			7,228
Net realized investment gains (losses)	$	5,205		$	(69,957	)	$	(40,295	)	$	(123,618	)

On sale of investments

Generally, sales of individual securities occur when there are changes in the relative value, credit quality or duration of a particular issue. We may also sell to rebalance our investment portfolio in order to change exposure to particular asset classes or sectors. Net realized investment gains in the three months ended September 30, 2016 are reflective of the improvement in pricing of our fixed maturities and equities. Net realized investment losses in the nine months ended September 30, 2016 are primarily due to foreign exchange losses on non-U.S. denominated securities, as a result of the strengthening of the U.S. dollar.

OTTI charges

For the three months ended September 30, 2016, OTTI charges were driven by impairments on corporate debt securities and losses on non-U.S. denominated securities as a result of the decline in foreign exchange rates against the U.S. dollar. The nine months ended September 30, 2016 also included impairments on high yield corporate debt securities which are exposed to the energy sector and exchange-traded funds (ETFs) which are unlikely to recover in the near term.

Change in fair value of investment derivatives

From time to time, we may economically hedge the foreign exchange exposure of non-U.S. denominated securities by entering into foreign exchange forward contracts.

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Total Return

The following table provides a breakdown of the total return on cash and investments for the period indicated:

	Three months ended September 30,						Nine months ended September 30,
	2016			2015			2016			2015
Net investment income	$	116,923		$	45,685		$	257,818		$	226,336
Net realized investments gains (losses)	5,205			(69,957		)	(40,295		)	(123,618		)
Change in net unrealized gains (losses)	35,075			(26,441		)	303,573			(52,965		)
Interest in loss of equity method investments	(2,434		)	—			(2,434		)	—
Total	$	154,769		$	(50,713	)	$	518,662		$	49,753
Average cash and investments(1)	$	14,470,231		$	14,893,376		$	14,457,978		$	14,919,752
Total return on average cash and investments, pre-tax:
Inclusive of investment related foreign exchange movements	1.1		%	(0.3		%)	3.6		%	0.3		%
Exclusive of investment related foreign exchange movements	1.1		%	(0.1		%)	3.9		%	0.9		%

(1) The average cash and investments balance is calculated by taking the average of the month-end fair value balances held for the periods indicated.

CASH AND INVESTMENTS

The table below provides a breakdown of our cash and investments:

	September 30, 2016			December 31, 2015
		Fair Value			Fair Value
Fixed maturities		$	11,566,860		$	11,719,749
Equities		644,344			597,998
Mortgage loans		332,753			206,277
Other investments		847,262			816,756
Equity method investments		111,295			10,932
Short-term investments		39,877			34,406
Total investments		$	13,542,391		$	13,386,118
Cash and cash equivalents(1)		$	1,077,263		$	1,174,751

(1) Includes restricted cash and cash equivalents of $229 million and $187 million at September 30, 2016 and at December 31, 2015, respectively.

The $156m increase in the fair value of our total investments was driven by the downward shift in sovereign yield curves and the tightening of credit spreads on both investment grade and high-yield corporate debt. This was partially offset by the funding of financing and operating activities.

67

The following provides a further analysis on our investment portfolio by asset classes:

Fixed Maturities

The following provides a breakdown of our investment in fixed maturities:

	September 30, 2016				December 31, 2015
	Fair Value		% of Total		Fair Value		% of Total
Fixed maturities:
U.S. government and agency	$	1,562,877	14	%	$	1,651,949	14	%
Non-U.S. government	582,056		5	%	739,005		6	%
Corporate debt	4,568,500		39	%	4,362,769		37	%
Agency RMBS	2,522,731		22	%	2,249,236		19	%
CMBS	894,275		8	%	1,083,298		9	%
Non-Agency RMBS	71,830		—	%	101,008		1	%
ABS	1,235,596		11	%	1,371,270		12	%
Municipals(1)	128,995		1	%	161,214		2	%
Total	$	11,566,860	100	%	$	11,719,749	100	%
Credit ratings:
U.S. government and agency	$	1,562,877	14	%	$	1,651,949	14	%
AAA(2)	4,359,640		38	%	4,266,673		36	%
AA	1,165,958		10	%	1,273,941		11	%
A	1,770,161		15	%	2,065,192		18	%
BBB	1,607,798		14	%	1,442,938		12	%
Below BBB(3)	1,100,426		9	%	1,019,056		9	%
Total	$	11,566,860	100	%	$	11,719,749	100	%

(1) Includes bonds issued by states, municipalities, and political subdivisions.

(2) Includes U.S. government-sponsored agency RMBS and CMBS.

(3) Non-investment grade and non-rated securities.

At September 30,2016, our fixed maturities had a weighted average credit rating of AA- (2015: AA-) and an average duration of 3.2 years (2015: 3.3 years). When incorporating short-term investments and cash and cash equivalents into the calculation (bringing the total to $12.5 billion), the average credit rating would be AA- (2015: AA-) and duration would be 2.9 years (2015: 3.0 years).

During the year, net unrealized investment gains (losses) on fixed maturities moved from a net unrealized investment loss of $178 million at December 31, 2015 to a net unrealized gain of $104 million at September 30,2016.

Equities

Net unrealized investment gains on equities increased from $22 million at December 31, 2015 to $44 million at September 30,2016, an increase of $22 million due to an improvement in valuations reflective of performance of the global equity markets.

Mortgage Loans

During the year, we increased our investment in commercial mortgage loans from $206 million to $333 million, an increase of $127m. The commercial mortgage loans are high quality and collateralized by a variety of commercial properties and are diversified both geographically throughout the United States and by property type to reduce the risk of concentration.

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Other Investments

The composition of our other investments portfolio is summarized as follows:

	September 30, 2016				December 31, 2015
Hedge funds
Long/short equity funds	$	139,460	16	%	$	154,348	19	%
Multi-strategy funds	281,153		33	%	355,073		43	%
Event-driven funds	94,012		11	%	147,287		18	%
Leveraged bank loan funds	—		—	%	65		—	%
Total hedge funds	514,625		60	%	656,773		80	%
Direct lending funds	125,002		15	%	90,120		11	%
Private equity funds	89,170		11	%	—		—	%
Real estate funds	11,782		1	%	4,929		1	%
Total hedge, direct lending and real estate funds	740,579		87	%	751,822		92	%
Other privately held investments	42,900		5	%	—		—	%
CLO - Equities	63,783		8	%	64,934		8	%
Total other investments	$	847,262	100	%	$	816,756	100	%

The $142 million decrease in the fair value of our total hedge funds in 2016 was driven by $138 million of net redemptions and $4 million of price depreciation.

We have made total commitments of $310 million to managers of direct lending funds, of which $121 million of our total commitment has been called to date.

We have also made a total commitment of $60 million as a limited partner in a multi-strategy hedge fund, of which $48 million has been called to date.

We have made a total commitment of $100 million to a real estate fund, of which $10 million has been called to date.

During 2016, we made a total commitment of $135 million to a private equity fund, of which $95 million has been called to date.

Equity Method Investments

During 2016, we paid $104 million including direct transactions costs to acquire 18% of the common equity of Harrington, the parent company of Harrington Re, an independent reinsurance company jointly sponsored by AXIS Capital and Blackstone. Harrington is not a variable interest entity and given that we exercise significant influence over this investee we account for our ownership in Harrington under the equity method of accounting.

The Company also has investments in other equity method investments with a carrying value of $9 million.

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LIQUIDITY AND CAPITAL RESOURCES

Refer to the ‘Liquidity and Capital Resources’ section included under Item 7 of our Annual Report on Form 10-K for the year ended December 31, 2015 for a general discussion of our liquidity and capital resources.

The following table summarizes our consolidated capital as at:

	September 30, 2016			December 31, 2015
Senior notes	$	992,633		$	991,825
Preferred shares	625,000			627,843
Common equity	5,400,658			5,239,039
Shareholders’ equity	6,025,658			5,866,882
Total capital	$	7,018,291		$	6,858,707
Ratio of debt to total capital	14.1		%	14.5		%
Ratio of debt and preferred equity to total capital	23.0		%	23.6		%

We finance our operations with a combination of debt and equity capital. Our debt to total capital and debt and preferred equity to total capital ratios provide an indication of our capital structure, along with some insight into our financial strength. A company with higher ratios in comparison to industry average may show weak financial strength because the cost of its debts may adversely affect results of operations and/or increase its default risk. We believe that our financial flexibility remains strong.

Preferred Shares

On January 27, 2016 we redeemed the remaining 28,430 Series B preferred shares, for an aggregate liquidation preference of

$3 million.

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Common Equity

During the nine months endedSeptember 30, 2016, our common equity increased by $162 million. The following table reconciles our opening and closing common equity positions:

Nine months ended September 30,	2016
Common equity - opening	$	5,239,039
Net income	364,460
Shares repurchased for treasury	(449,086		)
Change in unrealized appreciation on available for sale investments, net of tax	281,276
Settlement of accelerated share repurchase	60,000
Common share dividends	(98,334		)
Preferred share dividends	(29,906		)
Share-based compensation expense recognized in equity	26,129
Foreign currency translation adjustment	5,694
Cost of treasury shares reissued	1,386
Common equity - closing	$	5,400,658

During the nine months endedSeptember 30, 2016, we repurchased 8.5 million common shares, including 7.1 million of common shares repurchased for a total of $389 million (including $375 million pursuant to our Board-authorized share repurchase program and $14 million relating to shares purchased in connection with the vesting of restricted stock awards granted under our 2007 Long-Term Equity Compensation Plan), and 1.4 million common shares acquired under the ASR which terminated on January 15, 2016. At October 27,2016, the remaining authorization under the common share repurchase program approved by our Board of Directors was $375 million (refer to Part II, Item 2 'Unregistered Sales of Equity Securities and Use of Proceeds' for additional information).

We continue to expect that cash flows generated from our operations, combined with the liquidity provided by our investment portfolio, will be sufficient to cover our required cash outflows and other contractual commitments through the foreseeable future.

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CRITICAL ACCOUNTING ESTIMATES

Our Consolidated Financial Statements include certain amounts that are inherently uncertain and judgmental in nature. As a result, we are required to make assumptions and best estimates in order to determine the reported values. We consider an accounting estimate to be critical if: (1) it requires that significant assumptions be made in order to deal with uncertainties and (2) changes in the estimate could have a material impact on our results of operations, financial condition or liquidity.

As disclosed in our 2015 Annual Report on Form 10-K, we believe that the material items requiring such subjective and complex estimates are our:

• reserves for losses and loss expenses;

• reinsurance recoverable balances;

• premiums;

• fair value measurements for our financial assets and liabilities; and

• assessments of other-than-temporary impairments.

We believe that the critical accounting estimates discussion in Item 7 of our Annual Report on Form 10-K for the year ended December 31, 2015, continues to describe the significant estimates and judgments included in the preparation of our Consolidated Financial Statements.

NEW ACCOUNTING STANDARDS

Refer to Item 1, Note 1 'Basis of Presentation and Accounting policies' to the Consolidated Financial Statements and Item 8, Note 2 'Significant Accounting Policies' to the Consolidated Financial Statements in our Annual Report on Form 10-K for the year ended December 31, 2015, for a discussion of recently issued accounting pronouncements that we have not yet adopted.

OFF-BALANCE SHEET AND SPECIAL PURPOSE ENTITY ARRANGEMENTS

At September 30, 2016, we have not entered into any off-balance sheet arrangements, as defined by Item 303(a)(4) of Regulation S-K.

NON-GAAP FINANCIAL MEASURES

In this report, we present operating income, consolidated underwriting income, underwriting-related general and administrative expenses and amounts presented on a constant currency basis, which are “non-GAAP financial measures” as defined in Regulation G.

Operating income represents after-tax operational results without consideration of after-tax net realized investment gains (losses), foreign exchange losses (gains), termination fee received and reorganization and related expenses. We also present diluted operating income per common share and operating return on average common equity (“operating ROACE”), which are derived from the non-GAAP operating income measure.

Consolidated underwriting income is a pre-tax measure of underwriting profitability that takes into account net premiums earned and other insurance related income as revenues and net losses and loss expenses, acquisition costs and underwriting-related general and administrative costs as expenses. Underwriting-related general and administrative expenses include those general and administrative expenses that are incremental and/or directly attributable to our individual underwriting operations. While these measures are presented in Item 1, Note 2 to our Consolidated Financial Statements, they are considered non-GAAP financial measures when presented elsewhere on a consolidated basis.

Amounts presented on a constant currency basis are calculated by applying the average foreign exchange rate from the current year to prior year amounts.

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Operating income, diluted operating income per common share and operating ROACE can be reconciled to the nearest GAAP financial measures as follows:

	Three months ended September 30,						Nine months ended September 30,
	2016			2015			2016			2015
Net income available to common shareholders	$	176,644		$	247,620		$	334,554		$	466,772
Net realized investment (gains) losses, net of tax(1)	(2,726		)	67,897			42,667			119,442
Foreign exchange gains, net of tax(2)	(13,229		)	(27,410		)	(67,771		)	(68,456		)
Termination fee received(3)	—			(280,000		)	—			(280,000		)
Reorganization and related expenses, net of tax(4)	—			42,924			—			42,924
Operating income	$	160,689		$	51,031		$	309,450		$	280,682
Earnings per common share - diluted	$	1.96		$	2.50		$	3.61		$	4.65
Net realized investment (gains) losses, net of tax	(0.03		)	0.68			0.46			1.19
Foreign exchange gains, net of tax	(0.15		)	(0.28		)	(0.73		)	(0.69		)
Termination fee received	—			(2.82		)	—			(2.79		)
Reorganization and related expenses, net of tax	—			0.43			—			0.43
Operating income per common share - diluted	$	1.78		$	0.51		$	3.34		$	2.79
Weighted average common shares and common share equivalents - diluted(5)	90,351			99,124			92,579			100,468
Average common shareholders’ equity	$	5,369,921		$	5,259,619		$	5,319,849		$	5,195,901
ROACE (annualized)	13.2		%	18.8		%	8.4		%	12.0		%
Operating ROACE (annualized)	12.0		%	3.9		%	7.8		%	7.2		%

(1) Tax cost (benefit) of $2,479 and ($2,060) for the three months ended September 30, 2016 and 2015, respectively, and $2,372 and ($4,176) for the nine months ended September 30, 2016 and 2015, respectively. Tax impact is estimated by applying the statutory rates of applicable jurisdictions, after consideration of other relevant factors including the ability to utilize capital losses.

(2) Tax cost of $566 and $678 for the three months ended September 30, 2016 and 2015, respectively, and $2,010 and $744 for the nine months ended September 30, 2016 and 2015, respectively. Tax impact is estimated by applying the statutory rates of applicable jurisdictions, after consideration of other relevant factors including the tax status of specific foreign exchange transactions.

(3) Tax impact is nil.

(4) Tax benefit of nil and $2,943 for the three months ended September 30, 2016 and 2015, respectively, and nil and $2,943 for the nine months ended September 30, 2016 and 2015, respectively. Tax impact is estimated by applying the statutory rates of applicable jurisdictions, reflecting the jurisdictional apportionment and related tax treatment of the individual components of the reorganization and related expenses.

(5) Refer to Item 1, Note 8 to our Consolidated Financial Statements for further details on the dilution calculation.

A reconciliation of consolidated underwriting income to income before income taxes (the nearest GAAP financial measure) can be found in Item 1, Note 2 to the Consolidated Financial Statements. Underwriting-related general and administrative expenses are reconciled to general and administrative expenses (the nearest GAAP financial measure) within 'Underwriting Results - Group'.

We present our results of operations in the way we believe will be most meaningful and useful to investors, analysts, rating agencies and others who use our financial information to evaluate our performance. This includes the presentation of “operating income”, (in total and on a per share basis), “annualized operating ROACE” (which is based on the “operating income” measure) and “consolidated underwriting income”, which incorporates “underwriting-related general and administrative expenses”.

Operating Income

Although the investment of premiums to generate income and realized investment gains (losses) is an integral part of our operations, the determination to realize investment gains (losses) is independent of the underwriting process and is heavily influenced by the availability of market opportunities. Furthermore, many users believe that the timing of the realization of investment gains (losses) is somewhat opportunistic for many companies.

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Foreign exchange losses (gains) in our Consolidated Statements of Operations are primarily driven by the impact of foreign exchange rate movements on net insurance related-liabilities. However, this movement is only one element of the overall impact of foreign exchange rate fluctuations on our financial position. In addition, we recognize unrealized foreign exchange losses (gains) on our available-for-sale investments in other comprehensive income and foreign exchange losses (gains) realized upon the sale of these investments in net realized investments gains (losses). These unrealized and realized foreign exchange rate movements generally offset a large portion of the foreign exchange losses (gains) reported separately in earnings, thereby minimizing the impact of foreign exchange rate movements on total shareholders' equity. As such, the Statement of Operations foreign exchange losses (gains) in isolation are not a fair representation of the performance of our business.

The termination fee received represents the break-up fee paid by PartnerRe Ltd. following the cancellation of the amalgamation agreement with AXIS Capital and is not indicative of future revenues of the Company.

Reorganization and related expenses are primarily driven by business decisions, the nature and timing of which is unrelated to the underwriting process and which are not representative of underlying business performance.

In this regard, certain users of our financial statements evaluate earnings excluding after-tax net realized investment gains (losses) and foreign exchange losses (gains) to understand the profitability of recurring sources of income.

We believe that showing net income available to common shareholders exclusive of net realized gains (losses), foreign exchange losses (gains), termination fee received and reorganization and related expenses reflects the underlying fundamentals of our business. In addition, we believe that this presentation enables investors and other users of our financial information to analyze performance in a manner similar to how our management analyzes the underlying business performance. We also believe this measure follows industry practice and, therefore, facilitates comparison of our performance with our peer group. We believe that equity analysts and certain rating agencies that follow us, and the insurance industry as a whole, generally exclude these items from their analyses for the same reasons.

Consolidated Underwriting Income/Underwriting-Related General and Administrative Expenses

Corporate expenses include holding company costs necessary to support our worldwide insurance and reinsurance operations and costs associated with operating as a publicly-traded company. As these costs are not incremental and/or directly attributable to our individual underwriting operations, we exclude them from underwriting-related general and administrative expenses and, therefore, consolidated underwriting income. Interest expense and financing costs primarily relate to interest payable on our senior notes and are excluded from consolidated underwriting income for the same reason.

We evaluate our underwriting results separately from the performance of our investment portfolio. As such, we believe it appropriate to exclude net investment income and net realized investment gains (losses) from our underwriting profitability measure.

As noted above, foreign exchange losses (gains) in our Consolidated Statements of Operations primarily relate to our net insurance-related liabilities. However, we manage our investment portfolio in such a way that unrealized and realized foreign exchange rate losses (gains) on our investment portfolio generally offset a large portion of the foreign exchange losses (gains) arising from our underwriting portfolio. As a result, we believe that foreign exchange losses (gains) are not a meaningful contributor to our underwriting performance and, therefore, exclude them from consolidated underwriting income.

The termination fee received represents the break-up fee received on the cancellation of the amalgamation agreement between PartnerRe Ltd. and AXIS Capital and should be excluded from consolidated underwriting income since it is not related to underwriting operations.

Reorganization and related expenses are driven by business decisions, the nature and timing of which are unrelated to the underwriting process and for this reason they are excluded from consolidated underwriting income.

We believe that presentation of underwriting-related general and administrative expenses and consolidated underwriting income provides investors with an enhanced understanding of our results of operations, by highlighting the underlying pre-tax profitability of our underwriting activities.

ITEM 3.     QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Refer to Item 7A included in our 2015 Form 10-K. With the exception of the changes in exposure to foreign currency risk presented below, there have been no material changes to this item since December 31, 2015.

Foreign Currency Risk

The table below provides a sensitivity analysis of our total net foreign currency exposures.

	AUD			NZD			CAD			EUR			GBP			JPY			Other			Total
At September 30, 2016
Net managed assets (liabilities), excluding derivatives	$	85,933		$	(6,574	)	$	74,859		$	(159,487	)	$	(59,745	)	$	21,593		$	132,185		$	88,764
Foreign currency derivatives, net	(79,700		)	7,287			(80,621		)	204,334			5,836			(26,126		)	11,790			42,800
Net managed foreign currency exposure	6,233			713			(5,762		)	44,847			(53,909		)	(4,533		)	143,975			131,564
Other net foreign currency exposure	2,060			—			—			22,881			1,011			—			68,969			94,921
Total net foreign currency exposure	$	8,293		$	713		$	(5,762	)	$	67,728		$	(52,898	)	$	(4,533	)	$	212,944		$	226,485
Net foreign currency exposure as a percentage of total shareholders’ equity	0.1		%	—		%	(0.1		%)	1.1		%	(0.9		%)	(0.1		%)	3.5		%	3.8		%
Pre-tax impact of net foreign currency exposure on shareholders’ equity given a hypothetical 10% rate movement(1)	$	829		$	71		$	(576	)	$	6,773		$	(5,290	)	$	(453	)	$	21,294		$	22,648

(1) Assumes 10% change in underlying currencies relative to the U.S. dollar.

Total Net Foreign Currency Exposure

At September 30, 2016, our total net foreign currency exposure was $226 million net long, driven by increases in our exposures to the euro and other non-core currencies primarily due to new business written during the first nine months of 2016.

ITEM 4.     CONTROLS AND PROCEDURES

The Company’s management has performed an evaluation, with the participation of the Company’s Chief Executive Officer and Chief Financial Officer, of the effectiveness of our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) of the Securities Exchange Act of 1934 (the “Exchange Act”)) as of September 30, 2016. Based upon that evaluation, our Chief Executive Officer and Chief Financial Officer concluded that, as of September 30, 2016, our disclosure controls and procedures are effective to ensure that information required to be disclosed by us in reports that we file or submit under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the rules and forms of the SEC and is accumulated and communicated to

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management, including its principal executive and principal financial officers, as appropriate to allow timely decisions regarding required disclosure.

The Company’s management has performed an evaluation, with the participation of the Company’s Chief Executive Officer and the Company’s Chief Financial Officer, of changes in the Company’s internal control over financial reporting that occurred during the three months ended September 30, 2016. Based upon that evaluation, there were no changes in our internal control over financial reporting that occurred during the three months ended September 30, 2016 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

PART II     OTHER INFORMATION

ITEM 1.     LEGAL PROCEEDINGS

From time to time, we are subject to routine legal proceedings, including arbitrations, arising in the ordinary course of business. These legal proceedings generally relate to claims asserted by or against us in the ordinary course of insurance or reinsurance operations; estimated amounts payable under such proceedings are included in the reserve for losses and loss expenses in our Consolidated Balance Sheets.

We are not a party to any material legal proceedings arising outside the ordinary course of business.

ITEM 1A.     RISK FACTORS

There were no material changes from the risk factors previously disclosed in our Annual Report on Form 10-K for the year ended December 31, 2015.

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ITEM 2.     UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS

The following table presents information regarding the number of shares we repurchased during the three months ended September 30, 2016:

ISSUER PURCHASES OF EQUITY SECURITIES

Common Shares

Period	Total Number of Shares Purchased	Average Price Paid Per Share		Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs(1)	Maximum Number (or Approximate Dollar Value) of Shares That May Yet Be Purchased Under the Announced Plans or Programs(2)
July 1-31, 2016	127		$55.45	108	$494.0 million
August 1-31, 2016	1,552		$55.88	1,552	$407.3 million
September 1-30, 2016	572		$56.36	571	$375.1 million
Total	2,251			2,231	$375.1 million

(1) From time to time, we purchase shares in connection with the vesting of restricted stock awards granted to our employees under our 2007 Long-Term Equity Compensation Plan. The purchase of these shares is separately authorized and is not part of our Board-authorized share repurchase program, described below.

(2) On December 7, 2015, our Board of Directors authorized a share repurchase plan to repurchase up to $750 million of our common shares through to December 31, 2016. The share repurchase authorization which became effective on December 31, 2015, replaced the previous plan which had $444 million available through the end of 2016. Share repurchases may be effected from time to time in the open market or privately negotiated transactions, depending on market conditions.

ITEM 5.     OTHER INFORMATION

Disclosure of Certain Activities Under Section 13(r) of the Securities Exchange Act of 1934

Section 13(r) of the Securities Exchange Act of 1934, as amended, requires issuers to disclose in their annual and quarterly reports whether they or any of their affiliates knowingly engaged in certain activities with Iran or with individuals or entities that are subject to certain sanctions under U.S. law. Issuers are required to provide this disclosure even where the activities, transactions or dealings are conducted outside of the United States in compliance with applicable law.

As and when allowed by the applicable law and regulations, certain of our non-U.S. subsidiaries provide treaty reinsurance coverage to non-U.S. insurers of marine, aviation and energy risks on a worldwide basis, and as a result, these underlying reinsurance portfolios may have some exposure to Iran. In addition, we underwrite insurance and facultative reinsurance on a global basis to non-U.S. insureds and reinsureds for marine, aviation and energy risks. Coverage provided to non-Iranian business may indirectly cover an exposure in Iran. For example, certain of our operations underwrite global marine hull and cargo policies that provide coverage for vessels navigating into and out of ports worldwide, including Iran. For the quarter ended September 30, 2016, no premium has been allocated or apportioned to activities relating to Iran. As we believe these activities are permitted under applicable laws and regulations, we intend for our non-U.S. subsidiaries to continue to provide such coverage to the extent permitted by applicable law.

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ITEM 6.     EXHIBITS

3.1	Certificate of Incorporation and Memorandum of Association (incorporated by reference to Exhibit 3.1 to the Company’s Registration Statement on Form S-1(Amendment No. 1) (No. 333-103620) filed on April 16, 2003).
3.2	Amended and Restated Bye-Laws (incorporated by reference to Exhibit 4.2 to the Company’s Registration Statement on Form S-8 filed on May 15, 2009).
4.1	Specimen Common Share Certificate (incorporated by reference to Exhibit 4.1 to the Company’s Registration Statement on Form S-1 (Amendment No. 3) (No. 333-103620) filed on June 10, 2003).
4.2	Certificate of Designations establishing the specific rights, preferences, limitations and other terms of the Series C Preferred Shares (incorporated by reference to Exhibit 3.1 to the Company's Current Report on Form 8-K filed on March 19, 2012).
4.3	Certificate of Designations establishing the specific rights, preferences, limitations and other terms of the Series D Preferred Shares (incorporated by reference to Exhibit 3.1 to the Company's Current Report on Form 8-K filed on May 20, 2013).
10.1	Amendment No. 1 to Employment Agreement dated June 23, 2014 by and between Peter W. Wilson and AXIS Specialty U.S. Services, Inc. effective September 21, 2016 (incorporated by reference to Exhibit 10.1 to the Company's Current Report on Form 8-K filed on September 27, 2016).
†31.1	Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
†31.2	Certification of Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
†32.1	Certification of Chief Executive Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
†32.2	Certification of Chief Financial Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
†101	The following financial information from AXIS Capital Holdings Limited’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2016 formatted in XBRL: (i) Consolidated Balance Sheets at September 30, 2016 and December 31, 2015; (ii) Consolidated Statements of Operations for the three and nine months ended September 30, 2016 and 2015; (iii) Consolidated Statements of Comprehensive Income for the three and nine months ended September 30, 2016 and 2015; (iv) Consolidated Statements of Changes in Shareholders' Equity for the nine months ended September 30, 2016 and 2015; (v) Consolidated Statements of Cash Flows for the nine months ended September 30, 2016 and 2015; and (vi) Notes to Consolidated Financial Statements, tagged as blocks of text and in detail.

† Filed herewith.

The agreements and other documents filed as exhibits to this report are not intended to provide factual information or other disclosure other than with respect to the terms of the agreements or other documents themselves, and you should not rely on them for that purpose. In particular, any representations and warranties made by us in these agreements or other documents were made solely within the specific context of the relevant agreement or document and may not describe the actual state of affairs as of the date they were made or at any other time.

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SIGNATURES

Pursuant to the requirements 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.

Dated: October 27,2016

AXIS CAPITAL HOLDINGS LIMITED
By:	/S/ ALBERT BENCHIMOL
	Albert Benchimol
	President and Chief Executive Officer
	/S/ JOSEPH HENRY
	Joseph Henry
	Executive Vice President and Chief Financial Officer
	(Principal Financial Officer)

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EX-31.1

Exhibit 31.1

CERTIFICATION

AXIS Capital Holdings Limited

Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

I, Albert Benchimol, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q of AXIS Capital Holdings Limited for the period ended September 30, 2016;

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.

		/S/ ALBERT BENCHIMOL
Date:	October 27, 2016	Albert Benchimol President and Chief Executive Officer

EX-31.2

Exhibit 31.2

CERTIFICATION

AXIS Capital Holdings Limited

Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

I, Joseph Henry, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q of AXIS Capital Holdings Limited for the period ended September 30, 2016;

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.

		/S/ JOSEPH HENRY
Date:	October 27, 2016	Joseph Henry Executive Vice President and Chief Financial Officer

EX-32.1

Exhibit 32.1

AXIS CAPITAL HOLDINGS LIMITED

CERTIFICATION 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 Quarterly Report on Form 10-Q of AXIS Capital Holdings Limited (the “Company”) for the quarterly period ended September 30, 2016 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Albert Benchimol, Chief Executive Officer of the Company, hereby certify, to the best of my knowledge, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date:	October 27, 2016	/s/ ALBERT BENCHIMOL
		Albert Benchimol
		President and Chief Executive Officer

This certification accompanies this Report pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 and shall not, except to the extent required by such Act, be deemed filed by the Company for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”). Such certification will not be deemed to be incorporated by reference into any filing under the Securities Act of 1933, as amended, or the Exchange Act, except to the extent that the registrant specifically incorporates it by reference.

EX-32.2

Exhibit 32.2

AXIS CAPITAL HOLDINGS LIMITED

CERTIFICATION 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 Quarterly Report on Form 10-Q of AXIS Capital Holdings Limited (the “Company”) for the quarterly period ended September 30, 2016 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Joseph Henry, Chief Financial Officer of the Company, hereby certify, to the best of my knowledge, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date:	October 27, 2016	/s/ JOSEPH HENRY
		Joseph Henry
		Executive Vice President and Chief Financial Officer

This certification accompanies this Report pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 and shall not, except to the extent required by such Act, be deemed filed by the Company for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”). Such certification will not be deemed to be incorporated by reference into any filing under the Securities Act of 1933, as amended, or the Exchange Act, except to the extent that the registrant specifically incorporates it by reference.

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DOCUMENT AND ENTITY INFORMATION - shares	9 Months Ended
	Sep. 30, 2016	Oct. 19, 2016
DOCUMENT AND ENTITY INFORMATION [ABSTRACT]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2016
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	Q3
Entity Registrant Name	AXIS CAPITAL HOLDINGS LTD
Entity Central Index Key	0001214816
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		88,445,095

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CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Assets
Fixed maturities, available for sale, at fair value (Amortized cost 2016: $11,462,399; 2015: $11,897,639)	$ 11,566,860	$ 11,719,749
Equity securities, available for sale, at fair value (Cost 2016: $600,604; 2015: $575,776)	644,344	597,998
Mortgage loans, held for investment, at amortized cost and fair value	332,753	206,277
Other investments, at fair value	847,262	816,756
Equity method investments	111,295	10,932
Short-term investments, at amortized cost and fair value	39,877	34,406
Total investments	13,542,391	13,386,118
Cash and cash equivalents	848,200	988,133
Restricted cash and cash equivalents	229,063	186,618
Accrued interest receivable	71,096	73,729
Insurance and reinsurance premium balances receivable	2,694,976	1,967,535
Reinsurance recoverable on unpaid and paid losses	2,336,741	2,096,104
Deferred acquisition costs	545,618	471,782
Prepaid reinsurance premiums	582,551	396,201
Receivable for investments sold	2,285	26,478
Goodwill and intangible assets	85,501	86,858
Other assets	283,969	302,335
Total assets	21,222,391	19,981,891
Liabilities
Reserve for losses and loss expenses	9,874,807	9,646,285
Unearned premiums	3,453,655	2,760,889
Insurance and reinsurance balances payable	461,519	356,417
Senior notes	992,633	991,825
Payable for investments purchased	141,245	9,356
Other liabilities	272,874	350,237
Total liabilities	15,196,733	14,115,009
Shareholders’ equity
Preferred shares	625,000	627,843
Common shares (2016: 176,575; 2015: 176,240 shares issued and 2016: 88,439; 2015: 96,066 shares outstanding)	2,206	2,202
Additional paid-in capital	2,307,866	2,241,388
Accumulated other comprehensive income (loss)	98,505	(188,465)
Retained earnings	6,430,573	6,194,353
Treasury shares, at cost (2016: 88,136; 2015: 80,174 shares)	(3,438,492)	(3,010,439)
Total shareholders’ equity	6,025,658	5,866,882
Total liabilities and shareholders’ equity	$ 21,222,391	$ 19,981,891

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CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) shares in Thousands, $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Statement of Financial Position [Abstract]
Fixed maturities, available for sale, amortized cost	$ 11,462,399	$ 11,897,639
Equity securities, available for sale, cost	$ 600,604	$ 575,776
Common shares, shares issued (in shares)	176,575	176,240
Common shares, shares outstanding (in shares)	88,439	96,066
Treasury shares, shares (in shares)	88,136	80,174

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CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Revenues
Net premiums earned	$ 934,415	$ 919,341	$ 2,783,746	$ 2,764,605
Net investment income	116,923	45,685	257,818	226,336
Other insurance related income	5,944	1,158	4,850	12,319
Termination fee received	0	280,000	0	280,000
Net realized investment gains (losses):
Other-than-temporary impairment (OTTI) losses	(4,247)	(32,301)	(20,346)	(62,762)
Other realized investment gains (losses)	9,452	(37,656)	(19,949)	(60,856)
Total net realized investment gains (losses)	5,205	(69,957)	(40,295)	(123,618)
Total revenues	1,062,487	1,176,227	3,006,119	3,159,642
Expenses
Net losses and loss expenses	532,328	560,387	1,663,584	1,652,868
Acquisition costs	189,810	182,744	559,570	537,549
General and administrative expenses	142,906	144,727	439,554	456,451
Foreign exchange gains	(13,795)	(28,088)	(69,781)	(69,200)
Interest expense and financing costs	12,839	12,918	38,586	38,114
Reorganization and related expenses	0	45,867	0	45,867
Total expenses	864,088	918,555	2,631,513	2,661,649
Income before income taxes and interest in income (loss) of equity method investments	198,399	257,672	374,606	497,993
Income tax expense	9,352	30	7,712	1,155
Interest in loss of equity method investments	(2,434)	0	(2,434)	0
Net income	186,613	257,642	364,460	496,838
Preferred share dividends	9,969	10,022	29,906	30,066
Net income available to common shareholders	$ 176,644	$ 247,620	$ 334,554	$ 466,772
Net income per common share:
Basic net income (in usd per share)	$ 1.97	$ 2.52	$ 3.64	$ 4.69
Diluted net income (in usd per share)	$ 1.96	$ 2.50	$ 3.61	$ 4.65
Weighted average number of common shares outstanding - basic (in shares)	89,621	98,226	91,852	99,464
Weighted average number of common shares outstanding - diluted (in shares)	90,351	99,124	92,579	100,468
Cash dividends declared per common share (in usd per share)	$ 0.35	$ 0.29	$ 1.05	$ 0.87

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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Statement of Comprehensive Income [Abstract]
Net income	$ 186,613	$ 257,642	$ 364,460	$ 496,838
Other comprehensive income (loss), net of tax:
Unrealized investment gains (losses) arising during the period	36,336	(99,711)	238,656	(176,938)
Adjustment for reclassification of net realized investment gains (losses) and OTTI losses recognized in net income	(2,642)	74,810	42,620	128,770
Unrealized investment gains (losses) arising during the period, net of reclassification adjustment	33,694	(24,901)	281,276	(48,168)
Foreign currency translation adjustment	1,722	(14,626)	5,694	(23,851)
Total other comprehensive income (loss), net of tax	35,416	(39,527)	286,970	(72,019)
Comprehensive income	$ 222,029	$ 218,115	$ 651,430	$ 424,819

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CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (UNAUDITED) - USD ($) $ in Thousands	Total	Parent [Member]	Preferred shares [Member]	Common shares (par value) [Member]	Additional paid-in capital [Member]	Accumulated other comprehensive income (loss) [Member]	Unrealized gains (losses) on available for sale investments, net of tax [Member]	Cumulative foreign currency translation adjustments, net of tax [Member]	Retained earnings [Member]	Treasury shares, at cost [Member]
Total shareholders’ equity at Dec. 31, 2014			$ 627,843	$ 2,191	$ 2,285,016	$ (45,574)	$ (28,192)	$ (17,382)	$ 5,715,504	$ (2,763,859)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares repurchased			0
Shares issued				11	2,472
Cost of treasury shares reissued					(17,674)					17,674
Shares repurchased for treasury					(60,000)					(264,076)
Stock options exercised					558
Share-based compensation expense					19,906
Unrealized gains (losses) arising during the period, net of reclassification adjustment	$ (48,168)						(48,168)
Non-credit portion of OTTI losses							0
Foreign currency translation adjustments	(23,851)							(23,851)
Net income	496,838								496,838
Preferred share dividends									(30,066)
Common share dividends									(88,379)
Total shareholders’ equity at Sep. 30, 2015		$ 5,826,366	627,843	2,202	2,230,278	(117,593)	(76,360)	(41,233)	6,093,897	(3,010,261)
Total shareholders’ equity at Dec. 31, 2015	5,866,882		627,843	2,202	2,241,388	(188,465)	(149,585)	(38,880)	6,194,353	(3,010,439)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares repurchased			(2,843)
Shares issued				4	(4)
Cost of treasury shares reissued					(19,647)					21,033
Shares repurchased for treasury					60,000					(449,086)
Stock options exercised					0
Share-based compensation expense					26,129
Unrealized gains (losses) arising during the period, net of reclassification adjustment	281,276						281,276
Non-credit portion of OTTI losses							0
Foreign currency translation adjustments	5,694							5,694
Net income	364,460								364,460
Preferred share dividends									(29,906)
Common share dividends									(98,334)
Total shareholders’ equity at Sep. 30, 2016	$ 6,025,658	$ 6,025,658	$ 625,000	$ 2,206	$ 2,307,866	$ 98,505	$ 131,691	$ (33,186)	$ 6,430,573	$ (3,438,492)

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CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Cash flows from operating activities:
Net income	$ 364,460	$ 496,838
Adjustments to reconcile net income to net cash provided by operating activities:
Net realized investment losses	40,295	123,618
Net realized and unrealized gains on other investments	(23,117)	(17,616)
Amortization of fixed maturities	51,660	75,645
Interest in loss of equity method investments	2,434	0
Other amortization and depreciation	17,370	26,219
Share-based compensation expense, net of cash payments	28,580	25,435
Changes in:
Accrued interest receivable	3,286	7,128
Reinsurance recoverable balances	(163,212)	(158,362)
Deferred acquisition costs	(73,759)	(77,348)
Prepaid reinsurance premiums	(184,648)	(69,016)
Reserve for loss and loss expenses	216,828	212,066
Unearned premiums	682,686	380,610
Insurance and reinsurance balances, net	(623,170)	(330,128)
Other items	(74,383)	7,841
Net cash provided by operating activities	265,310	702,930
Cash flows from investing activities:
Fixed maturities	(6,624,573)	(8,110,841)
Equity securities	(295,827)	(240,415)
Mortgage loans	(131,087)	(129,431)
Other investments	(177,500)	(61,591)
Equity method investments	(103,548)	0
Short-term investments	(81,479)	(34,147)
Proceeds from the sale of:
Fixed maturities	6,067,663	6,797,585
Equity securities	296,182	112,794
Other investments	170,111	244,353
Short-term investments	67,408	112,694
Proceeds from redemption of fixed maturities	977,852	1,107,175
Proceeds from redemption of short-term investments	8,185	22,337
Proceeds from the repayment of mortgage loans	4,808	0
Purchase of other assets	(19,055)	(18,401)
Change in restricted cash and cash equivalents	(42,445)	27,996
Net cash provided by (used in) investing activities	116,695	(169,892)
Cash flows from financing activities:
Repurchase of common shares	(389,086)	(332,097)
Dividends paid - common shares	(100,670)	(89,611)
Dividends paid - preferred shares	(29,940)	(30,066)
Repurchase of preferred shares	(2,843)	0
Proceeds from issuance of common shares	8	3,042
Net cash used in financing activities	(522,531)	(448,732)
Effect of exchange rate changes on foreign currency cash and cash equivalents	593	(13,883)
Increase (decrease) in cash and cash equivalents	(139,933)	70,423
Cash and cash equivalents - beginning of period	988,133	921,830
Cash and cash equivalents - end of period	848,200	$ 992,253
Consideration transferred reinsurance	170,000
Transfer of securities	$ 92,000

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BASIS OF PRESENTATION AND ACCOUNTING POLICIES

9 Months Ended

Sep. 30, 2016

Accounting Policies [Abstract]

BASIS OF PRESENTATION AND ACCOUNTING POLICIES

Basis of Presentation

These interim consolidated financial statements include the accounts of AXIS Capital Holdings Limited (“AXIS Capital”) and its subsidiaries (herein referred to as “we,” “us,” “our,” or the “Company”).

The consolidated balance sheet at September 30,2016 and the consolidated statements of operations, comprehensive income, shareholders' equity and cash flows for the periods ended September 30,2016 and 2015 have not been audited. The balance sheet at December 31, 2015 is derived from our audited financial statements.

These financial statements have been prepared in accordance with U.S. Generally Accepted Accounting Principles (“U.S. GAAP”) for interim financial information and with the Securities and Exchange Commission's (“SEC”) instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by U.S. GAAP for complete financial statements. In the opinion of management, these financial statements reflect all adjustments (consisting of normal recurring adjustments) considered necessary for a fair presentation of our financial position and results of operations for the periods presented. The results of operations for any interim period are not necessarily indicative of the results for a full year. All inter-company accounts and transactions have been eliminated.

The following information should be read in conjunction with our Annual Report on Form 10-K for the year ended December 31, 2015. Tabular dollar and share amounts are in thousands, except per share amounts. All amounts are reported in U.S. dollars. To facilitate comparison of information across periods, certain reclassifications have been made to prior year amounts to conform to the current year's presentation. These reclassifications did not impact our results of operations, financial condition or liquidity.

Significant Accounting Policies

There were no notable changes in our significant accounting policies subsequent to our Annual Report on Form 10-K for the year ended December 31, 2015, with the exception of the addition of accounting policies for equity method investments and retroactive accounting noted below.

Equity Method Investments

Investments in which the Company has significant influence over the operating and financial policies of the investee are classified as equity method investments and are accounted for using the equity method of accounting. In applying the equity method of accounting, investments are initially recorded at cost and are subsequently adjusted based on the Company’s proportionate share of net income or loss of the investee. Adjustments are based on the most recently available financial information from the investee.Changes in the carrying value of such investments are recorded in net income as interest in income (loss) of equity method investments.

Retroactive Reinsurance

Retroactive reinsurance reimburses a ceding company for liabilities incurred as a result of past insurable events covered under contracts subject to the reinsurance. In certain instances, reinsurance contracts cover losses both on a prospective basis and on a retroactive basis and where practical the Company bifurcates the prospective and retrospective elements of these reinsurance contracts and accounts for each element separately. Initial gains in connection with retroactive reinsurance contracts are deferred and amortized into income over the settlement period while losses are recognized immediately. When changes in the estimated amount recoverable from the reinsurer or in the timing of receipts related to that amount occur, a cumulative amortization adjustment is recognized in earnings in the period of the change so that the deferred gain reflects the balance that would have existed had the revised estimate been available at the inception of the reinsurance transaction.

New Accounting Standards Adopted in 2016

Share-Based Compensation

Effective January 1, 2016, the Company adopted the Accounting Standards Update ("ASU") 2014-12, "Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could be Achieved after the Requisite Service Period" issued by the Financial Accounting Standards Board (the "FASB"). This guidance requires that compensation costs be recognized in the period in which it becomes probable that the performance target will be achieved and to represent the compensation cost attributable to the period(s) for which the requisite service has already been rendered. This guidance was issued to clarify treatment where there was a divergence in accounting practice and its adoption did not impact our results of operations, financial condition or liquidity.

Debt Issuance Costs

Effective January 1, 2016, the Company adopted ASU 2015-03, "Simplifying the Presentation of Debt Issuance Costs" issued by the FASB. This guidance requires the debt issuance costs related to a recognized debt liability to be presented in the balance sheet as a direct deduction from the debt liability rather than as an asset. This guidance was issued to simplify the presentation of debt issuance costs and to resolve conflicting guidance. This guidance did not impact our results of operations, financial condition or liquidity.

Investments Measured Using The Net Asset Value Per Share ("NAV") Practical Expedient

Effective January 1, 2016, the Company adopted ASU 2015-07, "Disclosures for Investments in Certain Entities That Calculate Net Asset Value per Share (or its Equivalent)" issued by the FASB. This guidance eliminated the requirement to categorize investments measured using the net asset value ("NAV") practical expedient in the fair value hierarchy table. As this new guidance related solely to disclosures, the adoption did not impact our results of operations, financial condition or liquidity. The updated disclosures have been provided in Note 4 'Fair Value Measurements'.

Recently Issued Accounting Standards Not Yet Adopted

Leases

In February 2016, the FASB issued guidance that provides a new comprehensive model for lease accounting. The guidance will require most leases to be recognized on the balance sheet by recording a right-of-use asset and a corresponding lease liability. This guidance is effective for reporting periods beginning after December 15, 2018, and interim periods within those fiscal years with early adoption permitted. The Company is currently evaluating the impact of this guidance on our results of operations, financial condition and liquidity.

Transition To Equity Method Of Accounting

In March 2016, the FASB issued new guidance eliminating the requirement that an investor retrospectively apply equity method accounting when an existing investment qualifies for equity method accounting. The guidance is effective for annual periods beginning after December 15, 2016, and interim periods within those fiscal years with early adoption permitted. The guidance will be adopted on a prospective basis. The adoption of this guidance is not expected to materially impact our results of operations, financial condition or liquidity.

Share-Based Compensation Accounting

In March 2016, the FASB issued new guidance that will change the accounting for certain aspects of share-based compensation payments to employees. The guidance will require all income tax effects of awards to be recognized in the income statement when the awards vest or are settled. The guidance will also allow employers to increase the amounts withheld to cover income taxes on share-based compensation awards without requiring liability classification. Additionally, companies will be required to elect whether they will account for award forfeitures by recognizing forfeitures only as they occur or by estimating the number of awards expected to be forfeited. This guidance is effective for annual periods beginning after December 15, 2016, and interim periods within those fiscal years with early adoption permitted. The Company is currently evaluating the impact of this guidance on our results of operations, financial condition and liquidity.

Credit Losses

In June 2016, the FASB issued a new credit loss standard that changes the impairment model for most financial assets and certain other instruments. The guidance will replace the current "incurred loss" approach with a more forward looking "expected loss" model for instruments measured at amortized cost and will require entities to record allowances for available-for-sale debt securities rather than reduce the carrying amount. This guidance is effective for annual periods beginning after December 15, 2019, and interim periods within those fiscal years. Early adoption is permitted for annual periods beginning after December 15, 2018, and interim periods within those fiscal years. The Company is currently evaluating the impact of this guidance on our results of operations, financial condition and liquidity.

Cash Flows

In August 2016, the FASB issued new guidance to clarify how certain cash receipts and cash payments should be classified on the statement of cash flows. This guidance is effective for annual periods beginning after December 15, 2017, and interim periods within those fiscal years with early adoption permitted. The adoption of this guidance is not expected to impact our results of operations, financial condition or liquidity.

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SEGMENT INFORMATION

9 Months Ended

Sep. 30, 2016

Segment Reporting [Abstract]

SEGMENT INFORMATION

Our underwriting operations are organized around our global underwriting platforms, AXIS Insurance and AXIS Re. Therefore we have determined that we have two reportable segments, insurance and reinsurance. We do not allocate our assets by segment, with the exception of goodwill and intangible assets, as we evaluate the underwriting results of each segment separately from the results of our investment portfolio.

The following tables summarize the underwriting results of our reportable segments, as well as the carrying values of allocated goodwill and intangible assets:

	2016									2015
Three months ended and at September 30,	Insurance			Reinsurance			Total			Insurance			Reinsurance			Total
Gross premiums written	$	675,430		$	284,532		$	959,962		$	606,704		$	329,879		$	936,583
Net premiums written	433,131			162,300			595,431			381,118			296,099			677,217
Net premiums earned	444,691			489,724			934,415			444,550			474,791			919,341
Other insurance related income	39			5,905			5,944			542			616			1,158
Net losses and loss expenses	(273,226		)	(259,102		)	(532,328		)	(283,272		)	(277,115		)	(560,387		)
Acquisition costs	(61,755		)	(128,055		)	(189,810		)	(69,118		)	(113,626		)	(182,744		)
General and administrative expenses	(84,588		)	(29,635		)	(114,223		)	(85,814		)	(35,309		)	(121,123		)
Underwriting income	$	25,161		$	78,837		103,998			$	6,888		$	49,357		56,245
Corporate expenses							(28,683		)							(23,604		)
Net investment income							116,923									45,685
Net realized investment gains (losses)							5,205									(69,957		)
Foreign exchange gains							13,795									28,088
Interest expense and financing costs							(12,839		)							(12,918		)
Termination fee received							—									280,000
Reorganization and related expenses							—									(45,867		)
Income before income taxes and interest in income (loss) of equity method investments							$	198,399								$	257,672
Net loss and loss expense ratio	61.4		%	52.9		%	57.0		%	63.7		%	58.4		%	61.0		%
Acquisition cost ratio	13.9		%	26.1		%	20.3		%	15.5		%	23.9		%	19.9		%
General and administrative expense ratio	19.1		%	6.1		%	15.3		%	19.4		%	7.4		%	15.7		%
Combined ratio	94.4		%	85.1		%	92.6		%	98.6		%	89.7		%	96.6		%
Goodwill and intangible assets	$	85,501		$	—		$	85,501		$	87,329		$	—		$	87,329

	2016									2015
Nine months ended and at September 30,	Insurance			Reinsurance			Total			Insurance			Reinsurance			Total
Gross premiums written	$	2,112,796		$	2,126,762		$	4,239,558		$	1,970,554		$	1,833,374		$	3,803,928
Net premiums written	1,433,058			1,855,529			3,288,587			1,352,122			1,727,185			3,079,307
Net premiums earned	1,322,649			1,461,097			2,783,746			1,344,339			1,420,266			2,764,605
Other insurance related income (loss)	(57		)	4,907			4,850			811			11,508			12,319
Net losses and loss expenses	(853,771		)	(809,813		)	(1,663,584		)	(866,580		)	(786,288		)	(1,652,868		)
Acquisition costs	(184,982		)	(374,588		)	(559,570		)	(200,493		)	(337,056		)	(537,549		)
General and administrative expenses	(252,652		)	(99,980		)	(352,632		)	(261,924		)	(110,701		)	(372,625		)
Underwriting income	$	31,187		$	181,623		212,810			$	16,153		$	197,729		213,882
Corporate expenses							(86,922		)							(83,826		)
Net investment income							257,818									226,336
Net realized investment losses							(40,295		)							(123,618		)
Foreign exchange gains							69,781									69,200
Interest expense and financing costs							(38,586		)							(38,114		)
Termination fee received							—									280,000
Reorganization and related expenses							—									(45,867		)
Income before income taxes and interest in income (loss) of equity method investments							$	374,606								$	497,993
Net loss and loss expense ratio	64.6		%	55.4		%	59.8		%	64.5		%	55.4		%	59.8		%
Acquisition cost ratio	14.0		%	25.6		%	20.1		%	14.9		%	23.7		%	19.4		%
General and administrative expense ratio	19.0		%	6.9		%	15.8		%	19.5		%	7.8		%	16.5		%
Combined ratio	97.6		%	87.9		%	95.7		%	98.9		%	86.9		%	95.7		%
Goodwill and intangible assets	$	85,501		$	—		$	85,501		$	87,329		$	—		$	87,329

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INVESTMENTS

9 Months Ended

Sep. 30, 2016

Investments, Debt and Equity Securities [Abstract]

INVESTMENTS

a)     Fixed Maturities and Equities

The amortized cost or cost and fair values of our fixed maturities and equities were as follows:

	Amortized Cost or Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value		Non-credit OTTI in AOCI(5)
At September 30, 2016
Fixed maturities
U.S. government and agency	$	1,542,943	$	22,349	$	(2,415	)	$	1,562,877	$	—
Non-U.S. government	620,601		4,799		(43,344		)	582,056		—
Corporate debt	4,516,290		87,184		(34,974		)	4,568,500		—
Agency RMBS(1)	2,473,832		49,661		(762		)	2,522,731		—
CMBS(2)	877,732		18,546		(2,003		)	894,275		—
Non-Agency RMBS	71,842		1,636		(1,648		)	71,830		(870		)
ABS(3)	1,234,292		4,028		(2,724		)	1,235,596		—
Municipals(4)	124,867		4,215		(87		)	128,995		—
Total fixed maturities	$	11,462,399	$	192,418	$	(87,957	)	$	11,566,860	$	(870	)
Equity securities
Common stocks	$	379	$	38	$	(348	)	$	69
Exchange-traded funds	463,655		41,611		(1,060		)	504,206
Bond mutual funds	136,570		3,499		—			140,069
Total equity securities	$	600,604	$	45,148	$	(1,408	)	$	644,344
At December 31, 2015
Fixed maturities
U.S. government and agency	$	1,673,617	$	1,545	$	(23,213	)	$	1,651,949	$	—
Non-U.S. government	809,025		2,312		(72,332		)	739,005		—
Corporate debt	4,442,315		16,740		(96,286		)	4,362,769		—
Agency RMBS(1)	2,236,138		22,773		(9,675		)	2,249,236		—
CMBS(2)	1,088,595		3,885		(9,182		)	1,083,298		—
Non-Agency RMBS	99,989		1,992		(973		)	101,008		(875		)
ABS(3)	1,387,919		952		(17,601		)	1,371,270		—
Municipals(4)	160,041		2,319		(1,146		)	161,214		—
Total fixed maturities	$	11,897,639	$	52,518	$	(230,408	)	$	11,719,749	$	(875	)
Equity securities
Common stocks	$	—	$	—	$	—		$	—
Exchange-traded funds	447,524		31,211		(4,762		)	473,973
Bond mutual funds	128,252		—		(4,227		)	124,025
Total equity securities	$	575,776	$	31,211	$	(8,989	)	$	597,998

(1) Residential mortgage-backed securities (RMBS) originated by U.S. agencies.

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

(3) Asset-backed securities (ABS) include debt tranched securities collateralized primarily by auto loans, student loans, credit cards, and other asset types. This asset class also includes collateralized loan obligations (CLOs) and collateralized debt obligations (CDOs).

(4) Municipals include bonds issued by states, municipalities and political subdivisions.

(5) Represents the non-credit component of the other-than-temporary impairment (OTTI) losses, adjusted for subsequent sales, maturities and redemptions. It does not include the change in fair value subsequent to the impairment measurement date.

In the normal course of investing activities, we actively manage allocations to non-controlling tranches of structured securities (variable interests) issued by VIEs. These structured securities include RMBS, CMBS and ABS and are included in the above table. Additionally, within our other investments portfolio, we also invest in limited partnerships (hedge funds, direct lending funds, real estate funds and private equity funds) and CLO equity tranched securities, which are all variable interests issued by VIEs (see Note 3(c)). For these variable interests, we do not have the power to direct the activities that are most significant to the economic performance of the VIEs therefore we are not the primary beneficiary of any of these VIEs. Our maximum exposure to loss on these interests is limited to the amount of our investment. We have not provided financial or other support with respect to these structured securities other than our original investment.

Contractual Maturities

The contractual maturities of fixed maturities are shown below. Expected maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties.

	Amortized Cost		Fair Value		% of Total Fair Value
At September 30, 2016
Maturity
Due in one year or less	$	363,821	$	356,706	3.0	%
Due after one year through five years	3,809,515		3,801,104		32.9	%
Due after five years through ten years	2,286,970		2,330,895		20.2	%
Due after ten years	344,395		353,723		3.1	%
	6,804,701		6,842,428		59.2	%
Agency RMBS	2,473,832		2,522,731		21.8	%
CMBS	877,732		894,275		7.7	%
Non-Agency RMBS	71,842		71,830		0.6	%
ABS	1,234,292		1,235,596		10.7	%
Total	$	11,462,399	$	11,566,860	100.0	%
At December 31, 2015
Maturity
Due in one year or less	$	291,368	$	289,571	2.5	%
Due after one year through five years	4,217,515		4,142,802		35.3	%
Due after five years through ten years	2,263,684		2,181,525		18.6	%
Due after ten years	312,431		301,039		2.6	%
	7,084,998		6,914,937		59.0	%
Agency RMBS	2,236,138		2,249,236		19.2	%
CMBS	1,088,595		1,083,298		9.2	%
Non-Agency RMBS	99,989		101,008		0.9	%
ABS	1,387,919		1,371,270		11.7	%
Total	$	11,897,639	$	11,719,749	100.0	%

Gross Unrealized Losses

The following table summarizes fixed maturities and equities in an unrealized loss position and the aggregate fair value and gross unrealized loss by length of time the security has continuously been in an unrealized loss position:

	12 months or greater					Less than 12 months					Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
At September 30, 2016
Fixed maturities
U.S. government and agency	$	55,000	$	(1,635	)	$	422,681	$	(780	)	$	477,681	$	(2,415	)
Non-U.S. government	104,441		(24,061		)	254,694		(19,283		)	359,135		(43,344		)
Corporate debt	285,848		(26,202		)	639,722		(8,772		)	925,570		(34,974		)
Agency RMBS	80,375		(556		)	121,203		(206		)	201,578		(762		)
CMBS	99,004		(1,260		)	173,795		(743		)	272,799		(2,003		)
Non-Agency RMBS	10,184		(1,306		)	5,187		(342		)	15,371		(1,648		)
ABS	518,647		(2,253		)	50,402		(471		)	569,049		(2,724		)
Municipals	2,384		(18		)	15,567		(69		)	17,951		(87		)
Total fixed maturities	$	1,155,883	$	(57,291	)	$	1,683,251	$	(30,666	)	$	2,839,134	$	(87,957	)
Equity securities
Common stocks	$	—	$	—		$	31	$	(348	)	$	31	$	(348	)
Exchange-traded funds	6,153		(425		)	39,097		(635		)	45,250		(1,060		)
Bond mutual funds	—		—			—		—			—		—
Total equity securities	$	6,153	$	(425	)	$	39,128	$	(983	)	$	45,281	$	(1,408	)
At December 31, 2015
Fixed maturities
U.S. government and agency	$	84,179	$	(7,622	)	$	1,474,202	$	(15,591	)	$	1,558,381	$	(23,213	)
Non-U.S. government	170,269		(50,841		)	317,693		(21,491		)	487,962		(72,332		)
Corporate debt	340,831		(33,441		)	2,845,375		(62,845		)	3,186,206		(96,286		)
Agency RMBS	64,792		(1,609		)	1,073,566		(8,066		)	1,138,358		(9,675		)
CMBS	75,627		(1,579		)	659,480		(7,603		)	735,107		(9,182		)
Non-Agency RMBS	5,283		(210		)	43,199		(763		)	48,482		(973		)
ABS	562,599		(11,158		)	667,448		(6,443		)	1,230,047		(17,601		)
Municipals	14,214		(310		)	64,104		(836		)	78,318		(1,146		)
Total fixed maturities	$	1,317,794	$	(106,770	)	$	7,145,067	$	(123,638	)	$	8,462,861	$	(230,408	)
Equity securities
Common stocks	$	—	$	—		$	—	$	—		$	—	$	—
Exchange-traded funds	2,331		(313		)	110,972		(4,449		)	113,303		(4,762		)
Bond mutual funds	—		—			124,025		(4,227		)	124,025		(4,227		)
Total equity securities	$	2,331	$	(313	)	$	234,997	$	(8,676	)	$	237,328	$	(8,989	)

Fixed Maturities

At September 30,2016, 935 fixed maturities (2015: 2,314) were in an unrealized loss position of $88 million (2015: $230 million), of which $13 million (2015: $39 million) was related to securities below investment grade or not rated.

At September 30,2016, 399 (2015: 383) securities had been in a continuous unrealized loss position for 12 months or greater and had a fair value of $1,156 million (2015: $1,318 million). Following our credit impairment review, we concluded that these securities as well as the remaining securities in an unrealized loss position in the above table were temporarily impaired at September 30,2016, and were expected to recover in value as the securities approach maturity. Further, at September 30,2016, we did not intend to sell these securities in an unrealized loss position and it is more likely than not that we will not be required to sell these securities before the anticipated recovery of their amortized costs.

Equity Securities

At September 30,2016, 20 securities (2015: 35) were in an unrealized loss position of $1 million (2015: $9 million).

At September 30,2016, 5 securities (2015: 1) were in a continuous unrealized loss position for 12 months or greater. Based on our impairment review process and our ability and intent to hold these securities for a reasonable period of time sufficient for a full recovery, we concluded that the above equities in an unrealized loss position were temporarily impaired at September 30,2016.

b) Mortgage Loans

The following table provides a breakdown of our mortgage loans held-for-investment:

	September 30, 2016				December 31, 2015
	Carrying Value		% of Total		Carrying Value		% of Total
Mortgage Loans held-for-investment:
Commercial	$	332,753	100	%	$	206,277	100	%
	332,753		100	%	206,277		100	%
Valuation allowances	—		—	%	—		—	%
Total Mortgage Loans held-for-investment	$	332,753	100	%	$	206,277	100	%

For commercial mortgage loans, the primary credit quality indicator is the debt service coverage ratio (which compares a property’s net operating income to amounts needed to service the principal and interest due under the loan, generally, the lower the debt service coverage ratio, the higher the risk of experiencing a credit loss) and the loan-to-value ratio (loan-to-value ratios compare the unpaid principal balance of the loan to the estimated fair value of the underlying collateral, generally, the higher the loan-to-value ratio, the higher the risk of experiencing a credit loss). The debt service coverage ratio and loan-to-value ratio, as well as the values utilized in calculating these ratios, are updated annually, on a rolling basis.

We have a high quality mortgage portfolio with debt service coverage ratios in excess of 1.1x and loan-to-value ratios of less than 70%; there are no credit losses associated with the commercial mortgage loans that we hold at September 30,2016.

There are no past due amounts at September 30,2016.

c) Other Investments

The following table provides a breakdown of our investments in hedge funds, direct lending funds, private equity funds, real estate funds, CLO Equities and other privately held investments, together with additional information relating to the liquidity of each category:

	Fair Value				Redemption Frequency (if currently eligible)	Redemption     Notice Period
At September 30, 2016
Long/short equity funds	$	139,460	16	%	Quarterly, Semi-annually, Annually	45-60 days
Multi-strategy funds	281,153		33	%	Quarterly, Semi-annually	60-95 days
Event-driven funds	94,012		11	%	Quarterly, Annually	45-60 days
Leveraged bank loan funds	—		—	%	n/a	n/a
Direct lending funds	125,002		15	%	n/a	n/a
Private equity funds	89,170		11	%	n/a	n/a
Real estate funds	11,782		1	%	n/a	n/a
CLO - Equities	63,783		8	%	n/a	n/a
Other privately held investments	42,900		5	%	n/a	n/a
Total other investments	$	847,262	100	%
At December 31, 2015
Long/short equity funds	$	154,348	19	%	Quarterly, Semi-annually, Annually	45-60 days
Multi-strategy funds	355,073		43	%	Quarterly, Semi-annually	60-95 days
Event-driven funds	147,287		18	%	Quarterly, Annually	45-60 days
Leveraged bank loan funds	65		—	%	n/a	n/a
Direct lending funds	90,120		11	%	n/a	n/a
Private equity funds	—		—	%	n/a	n/a
Real estate funds	4,929		1	%	n/a	n/a
CLO - Equities	64,934		8	%	n/a	n/a
Other privately held investments	—		—	%	n/a	n/a
Total other investments	$	816,756	100	%

n/a -notapplicable

The investment strategies for the above funds are as follows:

• Long/short equity funds: Seek to achieve attractive returns primarily by executing an equity trading strategy involving both long and short investments in publicly-traded equities.

• Multi-strategy funds: Seek to achieve above-market returns by pursuing multiple investment strategies to diversify risks and reduce volatility. This category includes funds of hedge funds which invest in a large pool of hedge funds across a diversified range of hedge fund strategies.

• Event-driven funds: Seek to achieve attractive returns by exploiting situations where announced or anticipated events create opportunities.

• Leveraged bank loan funds: Seek to achieve attractive returns by investing primarily in bank loan collateral that has limited interest rate risk exposure.

• Direct lending funds: Seek to achieve attractive risk-adjusted returns, including current income generation, by investing in funds which provide financing directly to borrowers.

• Real estate funds: Seek to achieve attractive risk-adjusted returns by making and managing investments in real estate and real estate securities and businesses.

• Private equity funds: Seek to achieve attractive risk-adjusted returns by investing in private transactions over the course of several years.

Two common redemption restrictions which may impact our ability to redeem our hedge funds are gates and lockups. A gate is a suspension of redemptions which may be implemented by the general partner or investment manager of the fund in order to defer, in whole or in part, the redemption request in the event the aggregate amount of redemption requests exceeds a predetermined percentage of the fund's net assets which may otherwise hinder the general partner or investment manager's ability to liquidate holdings in an orderly fashion in order to generate the cash necessary to fund extraordinarily large redemption payouts. A lockup period is the initial amount of time an investor is contractually required to hold the security before having the ability to redeem. During 2016 and 2015, neither of these restrictions impacted our redemption requests. At September 30,2016, $87 million (2015: $66 million), representing 17% (2015: 10%) of our total hedge funds, relate to holdings where we are still within the lockup period. The expiration of these lockup periods range from September 2016 to March 2019. 

At September 30,2016, we have $189 million (2015: $222 million) of unfunded commitments within our other investments portfolio relating to our future investments in direct lending funds. Once the full amount of committed capital has been called by the General Partner of each of these funds, the assets will not be fully returned until the completion of the fund's investment term. These funds have investment terms ranging from 5-10 years and the General Partners of certain funds have the option to extend the term by up to three years.

At September 30,2016, we have $12 million (2015: $12 million) of unfunded commitments as a limited partner in a multi-strategy hedge fund. Once the full amount of committed capital has been called by the General Partner, the assets will not be fully returned until the completion of the fund's investment term which ends in March, 2019. The General Partner then has the option to extend the term by up to three years.

At September 30,2016, we have $90 million (2015: $95 million) of unfunded commitments as a limited partner in a fund which invests in real estate and real estate securities and businesses. The fund is subject to a three year commitment period and a total fund life of eight years during which time we are not eligible to redeem our investment.

During 2016, we made a $135 million commitment as a limited partner in a private equity fund. At September 30,2016, $40 million of our commitment remains unfunded and the current fair value of the funds called to date are included in the private equity funds line of the table above. The fund invests in underlying private equity funds and the life of the fund is subject to the dissolution of the underlying funds. We expect the overall holding period to be over ten years.

During 2015, we made a $50 million commitment as a limited partner of a bank revolver opportunity fund. The fund is subject to an investment term of seven years and the General Partners have the option to extend the term by up to two years. At September 30,2016, this commitment remains unfunded. It is not anticipated that the full amount of this fund will be drawn.

d) Equity Method Investments

During 2016, we paid $104 million including direct transaction costs to acquire 18% of the common equity of Harrington Reinsurance Holdings Limited ("Harrington"), the parent company of Harrington Re Ltd. ("Harrington Re"), an independent reinsurance company jointly sponsored by AXIS Capital and The Blackstone Group L.P. ("Blackstone"). Through long-term service agreements, AXIS Capital will serve as Harrington Re's reinsurance underwriting manager and Blackstone will serve as exclusive investment management service provider. As an investor, we expect to benefit from underwriting profit generated by Harrington Re and the income and capital appreciation Blackstone seeks to deliver through its investment management services. In addition, we have entered into an arrangement with Blackstone under which underwriting and investment related fees will be shared equally. Harrington is not a variable interest entity and given that we exercise significant influence over this investee we account for our ownership in Harrington under the equity method of accounting. The Company's proportionate share of the underlying equity in net assets resulted in a basis difference of $5 million which represents initial transactions costs.

The Company also has investments in other equity method investments with a carrying value of $9 million.

e) Net Investment Income

Net investment income was derived from the following sources:

	Three months ended September 30,						Nine months ended September 30,
	2016			2015			2016			2015
Fixed maturities	$	75,827		$	75,980		$	229,423		$	220,066
Other investments	38,248			(27,421		)	25,770			17,616
Equity securities	4,633			3,445			12,843			7,795
Mortgage loans	2,191			482			5,683			776
Cash and cash equivalents	3,768			993			7,071			3,770
Short-term investments	337			83			708			277
Gross investment income	125,004			53,562			281,498			250,300
Investment expenses	(8,081		)	(7,877		)	(23,680		)	(23,964		)
Net investment income	$	116,923		$	45,685		$	257,818		$	226,336

f) Net Realized Investment Gains (Losses)

The following table provides an analysis of net realized investment gains (losses):

	Three months ended September 30,						Nine months ended September 30,
	2016			2015			2016			2015
Gross realized gains
Fixed maturities and short-term investments	$	26,211		$	12,126		$	67,833		$	44,853
Equities	5,570			232			18,804			447
Gross realized gains	31,781			12,358			86,637			45,300
Gross realized losses
Fixed maturities and short-term investments	(21,908		)	(54,867		)	(90,702		)	(111,432		)
Equities	(576		)	(1,559		)	(15,923		)	(1,952		)
Gross realized losses	(22,484		)	(56,426		)	(106,625		)	(113,384		)
Net OTTI recognized in earnings	(4,247		)	(32,301		)	(20,346		)	(62,762		)
Change in fair value of investment derivatives(1)	155			6,412			39			7,228
Net realized investment gains (losses)	$	5,205		$	(69,957	)	$	(40,295	)	$	(123,618	)

(1) Refer to Note 5 – Derivative Instruments

The following table summarizes the OTTI recognized in earnings by asset class:

	Three months ended September 30,				Nine months ended September 30,
	2016		2015		2016		2015
Fixed maturities:
Non-U.S. government	$	2,456	$	1,295	$	2,953	$	2,717
Corporate debt	1,791		20,587		14,833		38,396
Non-Agency RMBS	—		—		—		4
ABS	—		84		—		124
	4,247		21,966		17,786		41,241
Equity Securities
Exchange-traded funds	—		10,335		2,560		10,335
Bond mutual funds	—		—		—		11,186
	—		10,335		2,560		21,521
Total OTTI recognized in earnings	$	4,247	$	32,301	$	20,346	$	62,762

The following table provides a roll forward of the credit losses, before income taxes, for which a portion of the OTTI was recognized in AOCI:

	Three months ended September 30,						Nine months ended September 30,
	2016			2015			2016			2015
Balance at beginning of period	$	1,513		$	1,564		$	1,506		$	1,531
Credit impairments recognized on securities not previously impaired	—			—			—			—
Additional credit impairments recognized on securities previously impaired	—			—			7			33
Change in timing of future cash flows on securities previously impaired	—			—			—			—
Intent to sell of securities previously impaired	—			—			—			—
Securities sold/redeemed/matured	(33		)	(43		)	(33		)	(43		)
Balance at end of period	$	1,480		$	1,521		$	1,480		$	1,521

g) Reverse Repurchase Agreements

At September 30,2016, we held $160 million (December 31,2015: $30 million) of reverse repurchase agreements. These loans are fully collateralized, are generally outstanding for a short period of time and are presented on a gross basis as part of cash and cash equivalents on our consolidated balance sheet. The required collateral for these loans is either cash or U.S. Treasuries at a minimum rate of 102% of the loan principal. Upon maturity, we receive principal and interest income. We monitor the estimated fair value of the securities loaned and borrowed on a daily basis with additional collateral obtained as necessary throughout the duration of the transaction.

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FAIR VALUE MEASUREMENTS

9 Months Ended

Sep. 30, 2016

Fair Value Disclosures [Abstract]

FAIR VALUE MEASUREMENTS

Fair Value Hierarchy

Fair value is defined as the price to sell an asset or transfer a liability (i.e. the “exit price”) in an orderly transaction between market participants. We use a fair value hierarchy that gives the highest priority to quoted prices in active markets and the lowest priority to unobservable data. The level in the hierarchy within which a given fair value measurement falls is determined based on the lowest level input that is significant to the measurement. The hierarchy is broken down into three levels as follows:

• Level 1 - Valuations based on unadjusted quoted prices in active markets for identical assets or liabilities that we have the ability to access.

• Level 2 - Valuations based on quoted prices in active markets for similar assets or liabilities, quoted prices for identical assets or liabilities in inactive markets, or for which significant inputs are observable (e.g. interest rates, yield curves, prepayment speeds, default rates, loss severities, etc.) or can be corroborated by observable market data.

• Level 3 - Valuations based on inputs that are unobservable and significant to the overall fair value measurement. The unobservable inputs reflect our own judgments about assumptions that market participants might use.

The availability of observable inputs can vary from financial instrument to financial instrument and is affected by a wide variety of factors including, for example, the type of financial instrument, whether the financial instrument is new and not yet established in the marketplace, and other characteristics particular to the transaction. To the extent that valuation is based on models or inputs that are less observable or unobservable in the market, the determination of fair value requires significantly more judgment.

Accordingly, the degree of judgment exercised by management in determining fair value is greatest for instruments categorized in Level 3. In periods of market dislocation, the observability of prices and inputs may be reduced for many instruments. This may lead us to change the selection of our valuation technique (from market to cash flow approach) or may cause us to use multiple valuation techniques to estimate the fair value of a financial instrument. This circumstance could cause an instrument to be reclassified between levels within the fair value hierarchy.

We used the following valuation techniques including significant inputs and assumptions in estimating the fair value of our financial instruments as well as the general classification of such financial instruments pursuant to the above fair value hierarchy.

Fixed Maturities

At each valuation date, we use the market approach valuation technique to estimate the fair value of our fixed maturities portfolio, when possible. This market approach includes, but is not limited to, prices obtained from third party pricing services for identical or comparable securities and the use of “pricing matrix models” using observable market inputs such as yield curves, credit risks and spreads, measures of volatility, and prepayment speeds. Pricing from third party pricing services is sourced from multiple vendors, when available, and we maintain a vendor hierarchy by asset type based on historical pricing experience and vendor expertise. When prices are unavailable from pricing services, we obtain non-binding quotes from broker-dealers who are active in the corresponding markets.

The valuation techniques including significant inputs generally used to determine the fair value of our fixed maturities by asset class as well as the classification in the fair value hierarchy are described in detail below.

U.S. government and agency

U.S. government and agency securities consist primarily of bonds issued by the U.S. Treasury and mortgage pass-through agencies such as the Federal National Mortgage Association, the Federal Home Loan Mortgage Corporation and the Government National Mortgage Association. As the fair values of U.S. Treasury securities are based on unadjusted market prices in active markets, these securities are classified within Level 1. The fair values of U.S. government agency securities are priced using the spread above the risk-free yield curve. As the yields for the risk-free yield curve and the spreads for these securities are observable market inputs, the fair values of U.S. government agency securities are classified within Level 2.

Non-U.S. government

Non-U.S. government securities comprise bonds issued by non-U.S. governments and their agencies along with supranational organizations (collectively also known as sovereign debt securities). The fair values of these securities are based on prices obtained from international indices or a valuation model which uses inputs including interest rate yield curves, cross-currency basis index spreads, and country credit spreads for structures similar to the sovereign bond in terms of issuer, maturity and seniority. As the significant inputs are observable market inputs, the fair value of non-U.S. government securities are classified within Level 2.

Corporate debt

Corporate debt securities consist primarily of investment-grade debt of a wide variety of corporate issuers and industries. The fair values of these securities are generally determined using the spread above the risk-free yield curve. These spreads are generally obtained from the new issue market, secondary trading and broker-dealer quotes. As these spreads and the yields for the risk-free yield curve are observable market inputs, the fair values of corporate debt securities are classified within Level 2. Where pricing is unavailable from pricing services, we obtain non-binding quotes from broker-dealers to estimate fair value. This is generally the case when there is a low volume of trading activity and current transactions are not orderly. In this event, securities are classified within Level 3.

Agency RMBS

Agency RMBS securities consist of bonds issued by the Federal National Mortgage Association, the Federal Home Loan Mortgage Corporation and the Government National Mortgage Association. The fair values of these securities are priced using a mortgage pool specific model which uses daily inputs from the active to be announced market and the spread associated with each mortgage pool based on vintage. As the significant inputs are observable market inputs, the fair values of Agency RMBS securities are classified within Level 2.

CMBS

CMBS include mostly investment-grade bonds originated by non-agencies. The fair values of these securities are determined using a pricing model which uses dealer quotes and other available trade information along with security level characteristics to determine deal specific spreads. As the significant inputs are observable market inputs, the fair values of CMBS securities are classified within Level 2. Where pricing is unavailable from pricing services, we obtain non-binding quotes from broker-dealers to estimate fair value. This is generally the case when there is a low volume of trading activity and current transactions are not orderly. In this event, securities are classified within Level 3.

Non-Agency RMBS

Non-Agency RMBS include mostly investment-grade bonds originated by non-agencies. The fair values of these securities are determined using an option adjusted spread model or other relevant models, which use inputs including available trade information or broker quotes, prepayment and default projections based on historical statistics of the underlying collateral and current market data. As the significant inputs are observable market inputs, the fair values of Non-Agency RMBS securities are classified within Level 2.

ABS

ABS include mostly investment-grade bonds backed by pools of loans with a variety of underlying collateral, including automobile loan receivables, student loans, credit card receivables, and CLO Debt originated by a variety of financial institutions. The fair values of ABS are priced using a model which uses prepayment speeds and spreads sourced primarily from the new issue market. As the significant inputs used to price ABS are observable market inputs, the fair values of ABS are classified within Level 2. Where pricing is unavailable from pricing services, we obtain non-binding quotes from broker-dealers to estimate fair value. This is generally the case when there is a low volume of trading activity and current transactions are not orderly. In this event, securities are classified within Level 3.

Municipals

Municipals comprise revenue and general obligation bonds issued by U.S. domiciled state and municipal entities. The fair values of these securities are determined using spreads obtained from broker-dealers, trade prices and the new issue market. As the significant inputs used to price the municipals are observable market inputs, municipals are classified within Level 2.

Equity Securities

Equity securities include common stocks, exchange-traded funds and bond mutual funds. As the fair values of common stocks and exchange-traded funds are based on unadjusted quoted market prices in active markets, these securities are classified within Level 1.

As bond mutual funds have daily liquidity with redemption based on the NAV of the funds, the fair values of these securities are classified within Level 2.

Other Investments

At September 30, 2016, our investments in CLO - Equities were classified within Level 3 as we estimated the fair value for these securities using an income approach valuation technique (discounted cash flow model) due to the lack of observable and relevant trades in the secondary markets.

Other privately held securities include convertible preferred shares, convertible notes and notes payable. In the reporting period of investment, the cost of these investments approximates fair value. In subsequent measurement periods, a discounted cash flow model is used to determine the fair value of these securities. These securities are classified within Level 3.

Short-Term Investments

Short-term investments primarily comprise highly liquid securities with maturities greater than three months but less than one year from the date of purchase. These securities are classified within Level 2 because these securities are typically not actively traded due to their approaching maturity and, as such, their amortized cost approximates fair value.

Derivative Instruments

Our foreign currency forward contracts, interest rate swaps and commodity contracts are customized to our economic hedging strategies and trade in the over-the-counter derivative market. We use the market approach valuation technique to estimate the fair value for these derivatives based on significant observable market inputs from third party pricing vendors, non-binding broker-dealer quotes and/or recent trading activity. Accordingly, we classified these derivatives within Level 2.

We also participate in non-exchange traded derivative-based risk management products addressing weather risks. We use observable market inputs and unobservable inputs in combination with industry or internally-developed valuation and forecasting techniques to determine fair value. We classify these instruments within Level 3.

Insurance-linked Securities

Insurance-linked securities comprise an investment in a catastrophe bond. We obtain non-binding quotes from broker-dealers to estimate fair value. This is generally the case when there is a low volume of trading activity and current transactions are not orderly. These securities are classified within Level 3.

Cash Settled Awards

Cash settled awards comprise restricted stock units that form part of our compensation program. Although the fair value of these awards is determined using observable quoted market prices in active markets, the stock units themselves are not actively traded. Accordingly, we have classified these liabilities within Level 2.

The tables below present the financial instruments measured at fair value on a recurring basis for the periods indicated:

	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Fair value based on NAV practical expedient		Total Fair Value
At September 30, 2016
Assets
Fixed maturities
U.S. government and agency	$	1,522,246	$	40,631	$	—	$	—	$	1,562,877
Non-U.S. government	—		582,056		—		—		582,056
Corporate debt	—		4,499,408		69,092		—		4,568,500
Agency RMBS	—		2,522,731		—		—		2,522,731
CMBS	—		885,355		8,920		—		894,275
Non-Agency RMBS	—		71,830		—		—		71,830
ABS	—		1,235,596		—		—		1,235,596
Municipals	—		128,995		—		—		128,995
	1,522,246		9,966,602		78,012		—		11,566,860
Equity securities
Common stocks	69		—		—		—		69
Exchange-traded funds	504,206		—		—		—		504,206
Bond mutual funds	—		140,069		—		—		140,069
	504,275		140,069		—		—		644,344
Other investments
Hedge funds	—		—		—		514,625		514,625
Direct lending funds	—		—		—		125,002		125,002
Private equity funds	—		—		—		89,170		89,170
Real estate funds	—		—		—		11,782		11,782
Other privately held investments	—		—		42,900		—		42,900
CLO - Equities	—		—		63,783		—		63,783
	—		—		106,683		740,579		847,262
Short-term investments	—		39,877		—		—		39,877
Other assets
Derivative instruments (see Note 5)	—		4,469		2,488		—		6,957
Insurance-linked securities	—		—		25,283		—		25,283
Total Assets	$	2,026,521	$	10,151,017	$	212,466	$	740,579	$	13,130,583
Liabilities
Derivative instruments (see Note 5)	$	—	$	4,411	$	8,184	$	—	$	12,595
Cash settled awards (see Note 7)	—		34,288		—		—		34,288
Total Liabilities	$	—	$	38,699	$	8,184	$	—	$	46,883

	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Fair value based on NAV practical expedient		Total Fair Value
At December 31, 2015
Assets
Fixed maturities
U.S. government and agency	$	1,632,355	$	19,594	$	—	$	—	$	1,651,949
Non-U.S. government	—		739,005		—		—		739,005
Corporate debt	—		4,324,251		38,518		—		4,362,769
Agency RMBS	—		2,249,236		—		—		2,249,236
CMBS	—		1,072,376		10,922		—		1,083,298
Non-Agency RMBS	—		101,008		—		—		101,008
ABS	—		1,371,270		—		—		1,371,270
Municipals	—		161,214		—		—		161,214
	1,632,355		10,037,954		49,440		—		11,719,749
Equity securities
Common stocks	—		—		—		—		—
Exchange-traded funds	473,973		—		—		—		473,973
Bond mutual funds	—		124,025		—		—		124,025
	473,973		124,025		—		—		597,998
Other investments
Hedge funds	—		—		—		656,773		656,773
Direct lending funds	—		—		—		90,120		90,120
Private equity funds	—		—		—		—		—
Real estate funds	—		—		—		4,929		4,929
Other privately held investments	—		—		—		—		—
CLO - Equities	—		—		27,257		37,677		64,934
	—		—		27,257		789,499		816,756
Short-term investments	—		34,406		—		—		34,406
Other assets
Derivative instruments (see Note 5)	—		2,072		4,395		—		6,467
Insurance-linked securities	—		—		24,925		—		24,925
Total Assets	$	2,106,328	$	10,198,457	$	106,017	$	789,499	$	13,200,301
Liabilities
Derivative instruments (see Note 5)	$	—	$	7,692	$	10,937	$	—	$	18,629
Cash settled awards (see Note 7)	—		33,215		—		—		33,215
Total Liabilities	$	—	$	40,907	$	10,937	$	—	$	51,844

During 2016 and 2015, there were no transfers between Levels 1 and 2.

Except certain fixed maturities and insurance-linked securities priced using broker-dealer quotes (underlying inputs are not available), the following table quantifies the significant unobservable inputs we have used in estimating fair value at September 30,2016 for our investments classified as Level 3 in the fair value hierarchy.

	Fair Value			Valuation Technique	Unobservable Input	Range	Weighted Average
Other investments - CLO - Equities	$	35,594		Discounted cash flow	Default rates	4.0%	4.0%
					Loss severity rate	35.0% - 53.5%	35.4%
					Collateral spreads	3.6% - 4.0%	4.0%
					Estimated maturity dates	2 - 6 years	6 years
	28,189			Liquidation value	Fair value of collateral	100%	100%
					Discount margin	0.1% - 19.1%	2.4%
Other investments - Other privately held investments	42,900			Discounted cash flow	Discount rate	5.0% - 8.0%	7.2%
Derivatives - Weather derivatives, net	$	(5,696	)	Simulation model	Weather curve	1 - 2294(1)	n/a (2)
					Weather standard deviation	1 - 1029(1)	n/a (2)

(1) Measured in Heating Degree Days ("HDD") which is the number of degrees the daily temperature is below a reference temperature. The cumulative HDD for the duration of the derivatives contract is compared to the strike value to determine the necessary settlement.

(2) Due to the diversity of the portfolio, the range of unobservable inputs can be widespread; therefore, presentation of a weighted average is not useful. Weather parameters may include various temperature and/or precipitation measures that will naturally vary by geographic location of each counterparty's operations.

The CLO - Equities market continues to be mostly inactive with only a small number of transactions being observed and fewer still involving transactions in our CLO - Equities. Accordingly, we use models to estimate the fair value of our investments in CLO - Equities. Given that all of our direct investments in CLO - Equities are past their reinvestment period, there is uncertainty over the remaining time to maturity. As such our direct investments in CLO - Equities are valued at the lower of the liquidation value and fair value based on an internally developed discounted cash flow model.

The liquidation valuation is based on the fair value of the net underlying collateral which is determined by applying market discount margins by credit quality bucket. An increase (decrease) in the market discount margin would result in a decrease (increase) in value of our CLO - Equities. Regarding the discounted cash flow model, the default and loss severity rates are the most judgmental unobservable market inputs to which the valuation of CLO - Equities is most sensitive. A significant increase (decrease) in either of these significant inputs in isolation would result in lower (higher) fair value estimates for direct investments in our CLO - Equities and, in general, a change in default rate assumptions will be accompanied by a directionally similar change in loss severity rate assumptions. Collateral spreads and estimated maturity dates are less judgmental inputs as they are based on the historical average of actual spreads and the weighted average life of the current underlying portfolios, respectively. A significant increase (decrease) in either of these significant inputs in isolation would result in higher (lower) fair value estimates for direct investments in our CLO - Equities. In general, these inputs have no significant interrelationship with each other or with default and loss severity rates.

On a quarterly basis, our valuation process for CLO - Equities includes a review of the underlying collateral along with related discount margins by credit quality bucket used in the liquidation valuation and a review of the underlying cash flows and key assumptions used in the discounted cash flow model. We review and update the above significant unobservable inputs based on information obtained from secondary markets, including information received from the managers of our CLO - Equities portfolio.

In order to assess the reasonableness of the inputs we use in our models, we maintain an understanding of current market conditions, historical results, as well as emerging trends that may impact future cash flows. In addition,we update the assumptions we use in our models through regular communication with industry participants and ongoing monitoring of the deals in which we participate (e.g. default and loss severity rate trends).

Other privately held securities are initially valued at cost which approximates fair value. In subsequent measurement periods, a discounted cash flow model is used to determine the fair value of these securities. These models include inputs specific to each investment. The inputs used in the fair value measurement include dividend or interest rates and a discount rate. The discount rate is judgmental and the most significant unobservable input used in the valuation of the other privately held securities. Significant increases (decreases) in this input in isolation could result in a significantly higher (lower) fair value measurement. In order to assess the reasonableness of the inputs we use in our models, we maintain an understanding of current market conditions, historical results, as well as investee specific information that may impact future cash flows.

Weather derivatives relate to non-exchange traded risk management products addressing weather risks. We use observable market inputs and unobservable inputs in combination with industry or internally-developed valuation and forecasting techniques to determine fair value. The models may reference market price information for similar instruments. The pricing models are internally reviewed by Risk Management personnel prior to implementation and are reviewed periodically thereafter.

Observable and unobservable inputs to these models vary by contract type but would typically include the following:

• Observable inputs: market prices for similar instruments, notional price, option strike price, term to expiry, contractual limits;

• Unobservable inputs: correlation; and

• Both observable and unobservable inputs: weather curves, weather standard deviation.

In general, weather curves are the most significant contributing input to fair value determination. Changes in this variable can result in higher or lower fair value depending on the underlying position. In addition, changes in any or all of the unobservable inputs identified above may contribute positively or negatively to overall portfolio value. The correlation input will quantify the interrelationship, if any, amongst the other variables.

The following tables present changes in Level 3 for financial instruments measured at fair value on a recurring basis for the periods indicated:

	Opening Balance		Transfers into Level 3		Transfers out of Level 3			Included in earnings (1)			Included in OCI (2)			Purchases		Sales			Settlements/ Distributions			Closing Balance		Change in unrealized investment gain/(loss) (3)
Three months ended September 30, 2016
Fixed maturities
Corporate debt	$	62,022	$	—	$	—		$	(9	)	$	100		$	7,563	$	—		$	(584	)	$	69,092	$	—
CMBS	10,210		—		—			—			(48		)	—		—			(1,242		)	8,920		—
ABS	—		—		—			—			—			—		—			—			—		—
	72,232		—		—			(9		)	52			7,563		—			(1,826		)	78,012		—
Other investments
Other privately held investments	41,755		—		—			(355		)	—			1,500		—			—			42,900		(355		)
CLO - Equities	65,883		—		—			8,419			—			—		—			(10,519		)	63,783		8,419
	107,638		—		—			8,064			—			1,500		—			(10,519		)	106,683		8,064
Other assets
Derivative instruments	5		—		—			665			—			1,818		—			—			2,488		665
Insurance-linked securities	25,025		—		—			258			—			—		—			—			25,283		258
	25,030		—		—			923			—			1,818		—			—			27,771		923
Total assets	$	204,900	$	—	$	—		$	8,978		$	52		$	10,881	$	—		$	(12,345	)	$	212,466	$	8,987
Other liabilities
Derivative instruments	$	1,978	$	—	$	—		$	(169	)	$	—		$	6,384	$	—		$	(9	)	$	8,184	$	335
Total liabilities	$	1,978	$	—	$	—		$	(169	)	$	—		$	6,384	$	—		$	(9	)	$	8,184	$	335
Nine months ended September 30, 2016
Fixed maturities
Corporate debt	$	38,518	$	20,412	$	(1,955	)	$	(988	)	$	1,188		$	17,107	$	(4,015	)	$	(1,175	)	$	69,092	$	—
CMBS	10,922		—		—			—			(134		)	—		—			(1,868		)	8,920		—
ABS	—		—		—			—			—			—		—			—			—		—
	49,440		20,412		(1,955		)	(988		)	1,054			17,107		(4,015		)	(3,043		)	78,012		—
Other investments
Other privately held investments	—		—		—			(1,505		)	—			44,405		—			—			42,900		(1,505		)
CLO - Equities	27,257		36,378		—			17,431			—			—		—			(17,283		)	63,783		17,431
	27,257		36,378		—			15,926			—			44,405		—			(17,283		)	106,683		15,926
Other assets
Derivative instruments	4,395		—		—			3,255			—			3,623		—			(8,785		)	2,488		669
Insurance-linked securities	24,925		—		—			358			—			—		—			—			25,283		358
	29,320		—		—			3,613			—			3,623		—			(8,785		)	27,771		1,027
Total assets	$	106,017	$	56,790	$	(1,955	)	$	18,551		$	1,054		$	65,135	$	(4,015	)	$	(29,111	)	$	212,466	$	16,953
Other liabilities
Derivative instruments	$	10,937	$	—	$	—		$	2,445		$	—		$	7,189	$	—		$	(12,387	)	$	8,184	$	457
Total liabilities	$	10,937	$	—	$	—		$	2,445		$	—		$	7,189	$	—		$	(12,387	)	$	8,184	$	457

	Opening Balance		Transfers into Level 3		Transfers out of Level 3			Included in earnings (1)			Included in OCI (2)			Purchases		Sales		Settlements/ Distributions			Closing Balance		Change in unrealized investment gain/(loss) (3)
Three months ended September 30, 2015
Fixed maturities
Corporate debt	$	43,008	$	—	$	—		$	(2	)	$	300		$	22,821	$	—	$	(4,403	)	$	61,724	$	—
CMBS	21,900		—		(9,902		)	—			(219		)	—		—		(461		)	11,318		—
ABS	110		—		—			—			—			—		—		(3		)	107		—
	65,018		—		(9,902		)	(2		)	81			22,821		—		(4,867		)	73,149		—
Other investments
Other privately held investments	—		—		—			—			—			—		—		—			—		—
CLO - Equities	36,921		—		—			1,192			—			—		—		(3,118		)	34,995		1,192
	36,921		—		—			1,192			—			—		—		(3,118		)	34,995		1,192
Other assets
Derivative instruments	240		—		—			35			—			—		—		(240		)	35		35
Insurance-linked securities	24,837		—		—			175			—			—		—		—			25,012		175
	25,077		—		—			210			—			—		—		(240		)	25,047		210
Total assets	$	127,016	$	—	$	(9,902	)	$	1,400		$	81		$	22,821	$	—	$	(8,225	)	$	133,191	$	1,402
Other liabilities
Derivative instruments	$	818	$	—	$	—		$	(331	)	$	—		$	6,475	$	—	$	—		$	6,962	$	(331	)
Total liabilities	$	818	$	—	$	—		$	(331	)	$	—		$	6,475	$	—	$	—		$	6,962	$	(331	)
Nine months ended September 30, 2015
Fixed maturities
Corporate debt	$	15,837	$	—	$	—		$	(2	)	$	724		$	54,445	$	—	$	(9,280	)	$	61,724	$	—
CMBS	17,763		5,072		(9,902		)	—			(543		)	—		—		(1,072		)	11,318		—
ABS	40,031		—		(39,851		)	—			105			—		—		(178		)	107		—
	73,631		5,072		(49,753		)	(2		)	286			54,445		—		(10,530		)	73,149		—
Other investments
Other privately held investments	—		—		—			—			—			—		—		—			—		—
CLO - Equities	37,046		—		—			7,930			—			—		—		(9,981		)	34,995		7,930
	37,046		—		—			7,930			—			—		—		(9,981		)	34,995		7,930
Other assets
Derivative instruments	111		—		—			(792		)	—			—		—		716			35		35
Insurance-linked securities	—		—		—			12			—			25,000		—		—			25,012		12
	111		—		—			(780		)	—			25,000		—		716			25,047		47
Total assets	$	110,788	$	5,072	$	(49,753	)	$	7,148		$	286		$	79,445	$	—	$	(19,795	)	$	133,191	$	7,977
Other liabilities
Derivative instruments	$	15,288	$	—	$	—		$	(12,053	)	$	—		$	8,698	$	—	$	(4,971	)	$	6,962	$	(318	)
Total liabilities	$	15,288	$	—	$	—		$	(12,053	)	$	—		$	8,698	$	—	$	(4,971	)	$	6,962	$	(318	)

(1) Gains and losses included in earnings on fixed maturities are included in net realized investment gains (losses). Gains and (losses) included in earnings on other investments are included in net investment income. Gains (losses) on weather derivatives included in earnings are included in other insurance-related income.

(2) Gains and losses included in other comprehensive income (“OCI”) on fixed maturities are included in unrealized gains (losses) arising during the period.

(3) Change in unrealized investment gain (loss) relating to assets held at the reporting date.

The transfers into and out of fair value hierarchy levels reflect the fair value of the securities at the end of the reporting period.

Transfers into Level 3 from Level 2

There were no transfers to Level 3 from Level 2 made during the three months ended September 30, 2016 and 2015.

The transfers to Level 3 from Level 2 made during the nine months ended September 30, 2016 were primarily due to the lack of observable market inputs and multiple quotes from pricing vendors and broker-dealers for certain fixed maturities and as the result of a change in valuation methodology relating to our CLO equity fund. An income approach valuation technique (discounted cash flow model) is used to estimate fair value at September 30, 2016. As the NAV practical expedient is no longer used the CLO equity fund is now categorized within the fair value hierarchy.

The transfers to Level 3 from Level 2 made during the nine months ended September 30, 2015 were primarily due to the lack of observable market inputs and multiple quotes from pricing vendors and broker-dealers for certain fixed maturities.

Transfers out of Level 3 into Level 2

There were no transfers to Level 2 from Level 3 made during the three months ended September 30, 2016. The transfers to Level 2 from Level 3 made during the nine months ended September 30, 2016 were primarily due to the availability of observable market

inputs and quotes from pricing vendors on certain fixed maturities.

The transfers to Level 2 from Level 3 made during the three and nine months ended September 30, 2015 were primarily due to the availability of observable market inputs and quotes from pricing vendors on certain fixed maturities and CLO Debt securities.

Measuring the Fair Value of Other Investments Using Net Asset Valuations

As a practical expedient, we estimate fair values for hedge funds, direct lending funds, private equity funds and real estate funds using NAVs as advised by external fund managers or third party administrators. For each of these funds, the NAV is based on the manager's or administrator's valuation of the underlying holdings in accordance with the fund's governing documents and in accordance with U.S. GAAP.

If there is a reporting lag between the current period end and reporting date of the latest available fund valuation for any hedge fund, we estimate the change in fair value by starting with the most recently available fund valuation and adjusting for return estimates as well as any subscriptions, redemptions and distributions that took place during the current period. Return estimates are obtained from the relevant fund managers. Accordingly, we do not typically have a reporting lag in our fair value measurements for these funds. Historically, our valuation estimates incorporating these return estimates have not significantly diverged from the subsequently received NAVs.

For private equity funds, direct lending funds and the real estate fund, valuation statements are typically released on a three month reporting lag therefore the Company estimates fair value of these funds by starting with the prior quarter-end fund valuations and adjusting for capital calls, redemptions, drawdowns and distributions. Return estimates are not available from the relevant fund managers for these funds. Accordingly, we typically have a reporting lag in our fair value measurements for these funds.

The Company often does not have access to financial information relating to the underlying securities held within the funds, therefore management is unable to corroborate the fair values placed on the securities underlying the asset valuations provided by the fund manager or fund administrator. To address this, on a quarterly basis, we perform a number of monitoring procedures to assess the quality of the information provided by managers and administrators. These procedures include, but are not limited to, regular review and discussion of each fund's performance with its manager, regular evaluation of fund performance against applicable benchmarks and the backtesting of our fair value estimates against subsequently received NAVs. Backtesting involves comparing our previously reported values for each individual fund against NAVs per audited financial statements (for year-end values) and final NAVs from fund managers and fund administrators (for interim values).

The fair value of our hedge funds, direct lending funds, private equity funds and real estate funds are measured using the NAV practical expedient and therefore have not been categorized with the fair value hierarchy.

Financial Instruments Not Carried at Fair Value

U.S. GAAP guidance over disclosures about the fair value of financial instruments are also applicable to financial instruments not carried at fair value, except for certain financial instruments, including insurance contracts.

The carrying values of cash equivalents (including restricted amounts), accrued investment income, receivable for investments sold, certain other assets, payable for investments purchased and certain other liabilities approximated their fair values at September 30,2016, due to their respective short maturities. As these financial instruments are not actively traded, their respective fair values are classified within Level 2.

The carrying value of mortgage loans held-for-investment approximated their fair value at September 30,2016, as the loans are within their first two years of issue. The estimated fair value of mortgage loans is primarily determined by estimating expected future cash flows and discounting them using current interest rates for similar mortgage loans with similar credit risk, or is determined from pricing for similar loans. As mortgage loans are not actively traded, their respective fair values are classified within Level 3.

At September 30,2016, our senior notes are recorded at amortized cost with a carrying value of $993 million (2015: $992 million) and have a fair value of $1,083 million (2015: $1,058 million). The fair values of these securities were obtained from a third party pricing service and pricing was based on the spread above the risk-free yield curve. These spreads are generally obtained from the new issue market, secondary trading and broker-dealer quotes. As these spreads and the yields for the risk-free yield curve are observable market inputs, the fair values of our senior notes are classified within Level 2.

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DERIVATIVE INSTRUMENTS

9 Months Ended

Sep. 30, 2016

Derivative Instruments and Hedging Activities Disclosure [Abstract]

DERIVATIVE INSTRUMENTS

The following table summarizes the balance sheet classification of derivatives recorded at fair values. The notional amount of derivative contracts represents the basis upon which pay or receive amounts are calculated and is presented in the table to quantify the volume of our derivative activities. Notional amounts are not reflective of credit risk.

None of our derivative instruments are designated as hedges under current accounting guidance.

	September 30, 2016						December 31, 2015
	Derivative Notional Amount		Derivative Asset Fair Value(1)		Derivative Liability Fair Value(1)		Derivative Notional Amount		Derivative Asset Fair Value(1)		Derivative Liability Fair Value(1)
Relating to investment portfolio:
Foreign exchange forward contracts	$	40,367	$	279	$	17	$	198,406	$	490	$	837
Interest rate swaps	—		—		—		—		—		—
Relating to underwriting portfolio:
Foreign exchange forward contracts	560,477		25		4,394		692,023		1,582		6,855
Weather-related contracts	59,436		2,488		8,184		51,395		4,395		10,937
Commodity contracts	181,000		4,165		—		—		—		—
Total derivatives			$	6,957	$	12,595			$	6,467	$	18,629

(1) Asset and liability derivatives are classified within other assets and other liabilities in the Consolidated Balance Sheets.

Offsetting Assets and Liabilities

Our derivative instruments are generally traded under International Swaps and Derivatives Association master netting agreements, which establish terms that apply to all transactions. In the event of a bankruptcy or other stipulated event, master netting agreements provide that individual positions be replaced with a new amount, usually referred to as the termination amount, determined by taking into account market prices and converting into a single currency. Effectively, this contractual close-out netting reduces credit exposure from gross to net exposure. The table below presents a reconciliation of our gross derivative assets and liabilities to the net amounts presented in our Consolidated Balance Sheets, with the difference being attributable to the impact of master netting agreements.

	September 30, 2016							December 31, 2015
	Gross Amounts		Gross Amounts Offset			Net Amounts(1)		Gross Amounts		Gross Amounts Offset			Net Amounts(1)
Derivative assets	$	9,370	$	(2,413	)	$	6,957	$	14,336	$	(7,869	)	$	6,467
Derivative liabilities	$	15,008	$	(2,413	)	$	12,595	$	26,498	$	(7,869	)	$	18,629

(1) Net asset and liability derivatives are classified within other assets and other liabilities in the Consolidated Balance Sheets.

Refer to Note 3 - Investments for information on reverse repurchase agreements.

Derivative Instruments not Designated as Hedging Instruments

a) Relating to Investment Portfolio

Foreign Currency Risk

Within our investment portfolio we are exposed to foreign currency risk. Accordingly, the fair values for our investment portfolio are partially influenced by the change in foreign exchange rates. We may enter into foreign exchange forward contracts to manage the effect of this foreign currency risk. These foreign currency hedging activities are not designated as specific hedges for financial reporting purposes.

Interest Rate Risk

Our investment portfolio contains a large percentage of fixed maturities which exposes us to significant interest rate risk. As part of our overall management of this risk, we may use interest rate swaps.

b) Relating to Underwriting Portfolio

Foreign Currency Risk

Our (re)insurance subsidiaries and branches operate in various foreign countries. Consequently, some of our business is written in currencies other than the U.S. dollar and, therefore, our underwriting portfolio is exposed to significant foreign currency risk. We manage foreign currency risk by seeking to match our foreign-denominated net liabilities under (re)insurance contracts with cash and investments that are denominated in such currencies. We may also use derivative instruments, specifically forward contracts and currency options, to economically hedge foreign currency exposures.

Weather Risk

We write derivative-based risk management products designed to address weather risks with the objective of generating profits on a portfolio basis. The majority of this business consists of receiving a payment at contract inception in exchange for bearing the risk of variations in a quantifiable weather-related phenomenon, such as temperature. Where a client wishes to minimize the upfront payment, these transactions may be structured as swaps or collars. In general, our portfolio of such derivative contracts is of short duration, with contracts being predominantly seasonal in nature. In order to economically hedge a portion of this portfolio, we may also purchase weather derivatives.

Commodity Risk

Within our (re)insurance portfolio we are exposed to commodity price risk. We may hedge a portion of this price risk by entering into commodity derivative contracts.

The total unrealized and realized gains (losses) recognized in earnings for derivatives not designated as hedges were as follows:

	Location of Gain (Loss) Recognized in Income on Derivative	Three months ended September 30,						Nine months ended September 30,
		2016			2015			2016			2015
Derivatives not designated as hedging instruments
Relating to investment portfolio:
Foreign exchange forward contracts	Net realized investment gains (losses)	$	155		$	6,412		$	39		$	11,234
Interest rate swaps	Net realized investment gains (losses)	—			—			—			(4,006		)
Relating to underwriting portfolio:
Foreign exchange forward contracts	Foreign exchange losses (gains)	(182		)	(5,210		)	(2,958		)	(21,494		)
Weather-related contracts	Other insurance related income (losses)	833			307			809			11,274
Commodity contracts	Other insurance related income (losses)	1,799			(33		)	1,499			(923		)
Total		$	2,605		$	1,476		$	(611	)	$	(3,915	)

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RESERVE FOR LOSSES AND LOSS EXPENSES

9 Months Ended

Sep. 30, 2016

Insurance Loss Reserves [Abstract]

RESERVE FOR LOSSES AND LOSS EXPENSES

The following table presents a reconciliation of our beginning and ending gross reserve for losses and loss expenses and net reserve for unpaid losses and loss expenses for the periods indicated:

Nine months ended September 30,	2016			2015
Gross reserve for losses and loss expenses, beginning of period	$	9,646,285		$	9,596,797
Less reinsurance recoverable on unpaid losses, beginning of period	(2,031,309		)	(1,890,280		)
Net reserve for unpaid losses and loss expenses, beginning of period	7,614,976			7,706,517
Net incurred losses and loss expenses related to:
Current year	1,887,715			1,818,672
Prior years	(224,131		)	(165,804		)
	1,663,584			1,652,868
Net paid losses and loss expenses related to:
Current year	(233,124		)	(185,953		)
Prior years	(1,334,772		)	(1,293,776		)
	(1,567,896		)	(1,479,729		)
Foreign exchange and other	(112,649		)	(183,360		)
Net reserve for unpaid losses and loss expenses, end of period	7,598,015			7,696,296
Reinsurance recoverable on unpaid losses, end of period	2,276,792			2,007,287
Gross reserve for losses and loss expenses, end of period	$	9,874,807		$	9,703,583

We write business with loss experience generally characterized as low frequency and high severity in nature, which can result

in volatility in our financial results. During the nine months endedSeptember 30, 2016 and 2015, we recognized aggregate net losses and loss expenses, net of reinstatement premiums of $145 million and $90 million, respectively, in relation to catastrophe and weather-related events.

During April 2016, the Company entered into a quota share and adverse development cover reinsurance agreement, a retroactive contract which was deemed to have met the established criteria for retroactive reinsurance accounting. Foreign exchange and other includes reinsurance recoverables of $159 million related to this reinsurance agreement.

Prior year reserve development arises from changes to loss and loss expense estimates recognized in the current year but relating to losses incurred in previous calendar years. Such development is summarized by segment in the following table:

	Three months ended September 30,				Nine months ended September 30,
	2016		2015		2016		2015
Insurance	$	20,688	$	2,444	$	43,181	$	21,225
Reinsurance	55,331		42,681		180,950		144,579
Total	$	76,019	$	45,125	$	224,131	$	165,804

The majority of the net favorable prior year reserve development in each period related to short-tail reserve classes. Net favorable prior year reserve development for professional, reinsurance liability and motor reserve classes also contributed in the three and nine months ended September 30, 2016.

Our short tail business includes the underlying exposures in the property and other, marine and aviation reserving classes within our insurance segment and the property and other reserving class within our reinsurance segment. Development from these classes contributed $41 million and $38 million of the total net favorable prior year reserve development for the three months ended September 30,2016 and 2015, respectively. For the nine months ended September 30, 2016 and 2015, these short-tail lines contributed $116 million and $112 million, respectively, of net favorable prior year reserve development. The net favorable prior year reserve development for these classes primarily reflected the recognition of better than expected loss emergence.

Our medium-tail business consists primarily of professional insurance and reinsurance reserve classes, credit and political risk insurance reserve class and the credit and surety reinsurance reserve class. In the three and nine months ended September 30, 2016, the professional reserve classes contributed net favorable prior year reserve development of $12 million and $28 million, respectively. In the nine months ended September 30, 2015, the reinsurance professional reserve class contributed $25 million of net favorable development. The net favorable prior year development on these reserve classes continued to reflect the generally favorable experience on earlier accident years as we continued to transition to more experience based methods on these years. As our loss experience has generally been better than expected, this resulted in the recognition of net favorable prior year reserve development. In the three and nine months ended September 30, 2015, the insurance professional reserve class recorded net adverse prior year reserve development of $15 million and $16 million, respectively. This adverse development was primarily the result of strengthening in our Australian book of business during the third quarter of 2015.

In the three and nine months ended September 30, 2015, the credit and surety reserve class recorded net favorable prior year reserve development of $7 million and $19 million, respectively. This net favorable prior year reserve development reflected the recognition of generally better than expected loss emergence.

In the nine months ended September 30, 2015, we recorded net adverse prior year reserve development of $15 million in our credit and political risk reserve class relating to an increase in our loss portfolio estimates.

Our long-tail business consists primarily of liability and motor reserve classes. Our motor and liability reinsurance reserve classes contributed additional net favorable prior year reserve development of $17 million and $20 million in the three months ended September 30, 2016 and 2015, respectively. For the nine months ended September 30, 2016 and 2015, these long-tail reserve classes contributed $72 million and $64 million, respectively. The net favorable prior year reserve development for the motor reserve class related to favorable loss emergence trends on several classes of business spanning multiple accident years. The net favorable prior year reserve development for the liability reinsurance reserve class primarily reflected the progressively increased weight given by management to experience based indications on older accident years, which has generally been favorable. In the three and nine months ended September 30, 2015, we recorded net adverse prior year reserve development of $6 million and $23 million, respectively, in our insurance liability reserve class related primarily to an increase in loss estimates for specific individual claim reserves, as well as a higher frequency of large auto liability claims.

Our September 30, 2016 net reserves for losses and loss expenses includes estimated amounts for numerous catastrophe events. We caution that the magnitude and/or complexity of losses arising from certain of these events, in particular the Fort McMurray wildfires, Storm Sandy, the 2011 Japanese earthquake and tsunami, the three New Zealand earthquakes and the Tianjin port explosion, inherently increases the level of uncertainty and, therefore, the level of management judgment involved in arriving at our estimated net reserves for losses and loss expenses. As a result, our actual losses for these events may ultimately differ materially from our current estimates.

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SHARE-BASED COMPENSATION

9 Months Ended

Sep. 30, 2016

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

SHARE-BASED COMPENSATION

For the three months endedSeptember 30,2016, we incurred share-based compensation costs of $14 million (2015: $11 million) and recorded associated tax benefits of $3 million (2015: $3 million). For the nine months endedSeptember 30,2016, we incurred share-based compensation costs of $50 million (2015: $41 million) and recorded associated tax benefits of $11 million (2015: $11 million).

The total fair value of restricted stock, restricted stock units and cash settled awards vested during the nine months endedSeptember 30,2016 was $66 million (2015: $73 million). At September 30,2016 there were $104 million of unrecognized compensation costs, which are expected to be recognized over the weighted average period of 2.4 years.

Awards to settle in shares

The following table provides a reconciliation of the beginning and ending balance of nonvested restricted stock (including restricted stock units) for the nine months endedSeptember 30,2016:

	Performance-based Stock Awards				Service-based Stock Awards
	Number of Restricted Stock		Weighted Average Grant Date Fair Value		Number of Restricted Stock		Weighted  Average Grant Date Fair Value(1)
Nonvested restricted stock - beginning of period	201		$	49.24	1,954		$	43.34
Granted	104		53.80		586		53.81
Vested	(48	)	45.38		(779	)	39.26
Forfeited	—		—		(94	)	47.03
Nonvested restricted stock - end of period	257		$	52.04	1,667		$	48.77

(1) Fair value is based on the closing price of our common shares on the New York Stock Exchange on the day of the grant.

Cash-settled awards

The following table provides a reconciliation of the beginning and ending balance of nonvested cash settled restricted stock units for the nine months endedSeptember 30,2016:

	Performance-based Cash Settled RSUs		Service-based Cash Settled RSUs
	Number of Restricted Stock Units		Number of Restricted Stock Units
Nonvested restricted stock units - beginning of period	70		1,433
Granted	18		494
Vested	(32	)	(371	)
Forfeited	—		(94	)
Nonvested restricted stock units - end of period	56		1,462

At September 30, 2016, the corresponding liability for cash-settled units, included in other liabilities on the Consolidated Balance Sheets, was $34 million (2015: $23 million).

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EARNINGS PER COMMON SHARE

9 Months Ended

Sep. 30, 2016

Earnings Per Share [Abstract]

EARNINGS PER COMMON SHARE

The following table sets forth the comparison of basic and diluted earnings per common share:

	Three months ended September 30,				Nine months ended September 30,
	2016		2015		2016		2015
Basic earnings per common share
Net income	$	186,613	$	257,642	$	364,460	$	496,838
Less: preferred share dividends	9,969		10,022		29,906		30,066
Net income available to common shareholders	176,644		247,620		334,554		466,772
Weighted average common shares outstanding - basic(1)	89,621		98,226		91,852		99,464
Basic earnings per common share	$	1.97	$	2.52	$	3.64	$	4.69
Diluted earnings per common share
Net income available to common shareholders	$	176,644	$	247,620	$	334,554	$	466,772
Weighted average common shares outstanding - basic(1)	89,621		98,226		91,852		99,464
Share based compensation plans	730		898		727		1,004
Weighted average common shares outstanding - diluted(1)	90,351		99,124		92,579		100,468
Diluted earnings per common share	$	1.96	$	2.50	$	3.61	$	4.65
Anti-dilutive shares excluded from the dilutive computation	—		—		226		219

(1) On August 17, 2015, the Company entered into an Accelerated Share Repurchase (“ASR”) agreement (see 'Note 9 - Shareholders' Equity' for additional detail). The weighted-average number of shares outstanding used in the computation of basic and diluted earnings per share reflects the Company’s receipt of 4,149,378 common shares delivered to the Company on August 20, 2015, and 1,358,380 common shares delivered to the company on January 15, 2016 under the Company's ASR agreement.

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SHAREHOLDERS' EQUITY

9 Months Ended

Sep. 30, 2016

Stockholders' Equity Note [Abstract]

SHAREHOLDERS' EQUITY

The following table presents our common shares issued and outstanding:

	Three months ended September 30,				Nine months ended September 30,
	2016		2015		2016		2015
Shares issued, balance at beginning of period	176,575		176,206		176,240		175,478
Shares issued	—		16		335		744
Total shares issued at end of period	176,575		176,222		176,575		176,222
Treasury shares, balance at beginning of period	(85,921	)	(75,922	)	(80,174	)	(76,052	)
Shares repurchased	(2,252	)	(4,257	)	(8,499	)	(4,607	)
Shares reissued from treasury	37		6		537		486
Total treasury shares at end of period	(88,136	)	(80,173	)	(88,136	)	(80,173	)
Total shares outstanding	88,439		96,049		88,439		96,049

Treasury Shares

The following table presents our share repurchases:

	Three months ended September 30,				Nine months ended September 30,
	2016		2015		2016		2015
In the open market:
Total shares(1)	2,232		4,248		8,236		4,264
Total cost	$	124,948	$	245,658	$	434,948	$	246,490
Average price per share(2)	$	56.00	$	57.83	$	52.81	$	57.80
From employees:
Total shares	20		9		263		343
Total cost	$	1,088	$	489	$	14,137	$	17,586
Average price per share(2)	$	54.13	$	55.59	$	53.68	$	51.28
Total shares repurchased:
Total shares	2,252		4,257		8,499		4,607
Total cost	$	126,036	$	246,147	$	449,085	$	264,076
Average price per share(2)	$	55.98	$	57.83	$	52.84	$	57.32

(1) The nine months ended September 30, 2016 includes 1,358,380 common shares acquired under the accelerated share repurchase program (see below for more detail).

(2) Calculated using whole figures.

Accelerated Share Repurchase Program

On August 17, 2015, the Company entered into an Accelerated Share Repurchase agreement with Goldman, Sachs & Co. (“Goldman Sachs”) to repurchase an aggregate of $300 million of the Company’s ordinary shares under an accelerated share repurchase program.

During August, 2015, under the terms of this agreement, the Company paid $300 million to Goldman Sachs and initially repurchased 4,149,378 ordinary shares. The initial shares acquired represented 80% of the $300 million total paid to Goldman Sachs and were calculated using the Company’s stock price at activation of the program. The ASR program is accounted for as an equity transaction. Accordingly, as at December 31, 2015, $240 million of common shares repurchased were included as treasury shares in the Consolidated Balance Sheet with the remaining $60 million included as a reduction to additional paid-in capital.

On January 15, 2016, Goldman Sachs early terminated the ASR agreement and delivered 1,358,380 additional common shares to the Company, resulting in the reduction from additional paid-in capital of $60 million being reclassified to treasury shares. In total, the Company repurchased 5,507,758 common shares under the ASR agreement at an average price of $54.47.

Series B Preferred Shares

On January 27, 2016 we redeemed the remaining 28,430 Series B preferred shares, for an aggregate liquidation preference of $3 million.

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COMMITMENTS AND CONTINGENCIES

9 Months Ended

Sep. 30, 2016

Commitments and Contingencies Disclosure [Abstract]

COMMITMENTS AND CONTINGENCIES

Reinsurance Agreements

We purchase reinsurance coverage for various lines of our business. The minimum reinsurance premiums are contractually due in advance on a quarterly basis. Accordingly at September 30,2016, we have unrecorded outstanding reinsurance purchase commitments of $33 million, of which $3 million is due in 2016 while the remaining $30 million is due in 2017. Actual payments under the reinsurance contracts will depend on the underlying subject premium and may exceed the minimum premium.

Investments

Refer 'Note 3 - Investments' for information on commitments related to our other investments.

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OTHER COMPREHENSIVE INCOME (LOSS)

9 Months Ended

Sep. 30, 2016

Equity [Abstract]

OTHER COMPREHENSIVE INCOME (LOSS)

The tax effects allocated to each component of other comprehensive income were as follows:

	2016									2015
	Before Tax Amount			Tax (Expense) Benefit			Net of Tax Amount			Before Tax Amount			Tax (Expense) Benefit			Net of Tax Amount
Three months ended September 30,
Available for sale investments:
Unrealized investment gains (losses) arising during the period	$	40,125		$	(3,789	)	$	36,336		$	(102,810	)	$	3,099		$	(99,711	)
Adjustment for reclassification of net realized investment gains (losses) and OTTI losses recognized in net income	(5,050		)	2,408			(2,642		)	76,368			(1,558		)	74,810
Unrealized investment gains (losses) arising during the period, net of reclassification adjustment	35,075			(1,381		)	33,694			(26,442		)	1,541			(24,901		)
Non-credit portion of OTTI losses	—			—			—			—			—			—
Foreign currency translation adjustment	1,722			—			1,722			(14,626		)	—			(14,626		)
Total other comprehensive income (loss), net of tax	$	36,797		$	(1,381	)	$	35,416		$	(41,068	)	$	1,541		$	(39,527	)
Nine months ended September 30,
Available for sale investments:
Unrealized investment gains (losses) arising during the period	$	263,235		$	(24,579	)	$	238,656		$	(183,822	)	$	6,884		$	(176,938	)
Adjustment for reclassification of net realized investment gains and OTTI losses recognized in net income	40,338			2,282			42,620			130,858			(2,088		)	128,770
Unrealized investment gains (losses) arising during the period, net of reclassification adjustment	303,573			(22,297		)	281,276			(52,964		)	4,796			(48,168		)
Non-credit portion of OTTI losses	—			—			—			—			—			—
Foreign currency translation adjustment	5,694			—			5,694			(23,851		)	—			(23,851		)
Total other comprehensive income (loss), net of tax	$	309,267		$	(22,297	)	$	286,970		$	(76,815	)	$	4,796		$	(72,019	)

Reclassifications out of AOCI into net income available to common shareholders were as follows:

		Amount Reclassified from AOCI(1)
Details About AOCI Components	Consolidated Statement of Operations Line Item That Includes Reclassification	Three months ended September 30,						Nine months ended September 30,
		2016			2015			2016			2015
Unrealized investment gains (losses) on available for sale investments
	Other realized investment gains (losses)	$	9,297		$	(44,067	)	$	(19,992	)	$	(68,096	)
	OTTI losses	(4,247		)	(32,301		)	(20,346		)	(62,762		)
	Total before tax	5,050			(76,368		)	(40,338		)	(130,858		)
	Income tax (expense) benefit	(2,408		)	1,558			(2,282		)	2,088
	Net of tax	$	2,642		$	(74,810	)	$	(42,620	)	$	(128,770	)

(1) Amounts in parentheses are debits to net income available to common shareholders.

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SUBSQUENT EVENT

9 Months Ended

Sep. 30, 2016

Subsequent Events [Abstract]

Subsequent Event

In October 2016, the landfall of Hurricane Matthew impacted the Caribbean, southeastern United States and Canada, causing catastrophic loss of life, property damage and flooding.

Our preliminary after-tax net loss estimate for this event is in the range of $45 million to $60 million. The Company's loss estimate is primarily based on a ground-up assessment of losses from individual contracts and treaties exposed to the affected regions, including preliminary information from clients, brokers and loss adjusters. Industry insured loss estimates, market share analyses and catastrophe modeling analyses were also taken into account where appropriate.

Due to the nature of this event, including the complexity of loss assessment, factors contributing to the losses and the preliminary nature of the information available to prepare these estimates, the actual net ultimate amount of losses for this event may be materially different from this current estimate.

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BASIS OF PRESENTATION AND ACCOUNTING POLICIES (POLICIES)

9 Months Ended

Sep. 30, 2016

Accounting Policies [Abstract]

Basis of Presentation

Basis of Presentation

These interim consolidated financial statements include the accounts of AXIS Capital Holdings Limited (“AXIS Capital”) and its subsidiaries (herein referred to as “we,” “us,” “our,” or the “Company”).

The consolidated balance sheet at September 30,2016 and the consolidated statements of operations, comprehensive income, shareholders' equity and cash flows for the periods ended September 30,2016 and 2015 have not been audited. The balance sheet at December 31, 2015 is derived from our audited financial statements.

These financial statements have been prepared in accordance with U.S. Generally Accepted Accounting Principles (“U.S. GAAP”) for interim financial information and with the Securities and Exchange Commission's (“SEC”) instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by U.S. GAAP for complete financial statements. In the opinion of management, these financial statements reflect all adjustments (consisting of normal recurring adjustments) considered necessary for a fair presentation of our financial position and results of operations for the periods presented. The results of operations for any interim period are not necessarily indicative of the results for a full year. All inter-company accounts and transactions have been eliminated.

The following information should be read in conjunction with our Annual Report on Form 10-K for the year ended December 31, 2015. Tabular dollar and share amounts are in thousands, except per share amounts. All amounts are reported in U.S. dollars. To facilitate comparison of information across periods, certain reclassifications have been made to prior year amounts to conform to the current year's presentation. These reclassifications did not impact our results of operations, financial condition or liquidity.

Significant Accounting Policies

There were no notable changes in our significant accounting policies subsequent to our Annual Report on Form 10-K for the year ended December 31, 2015, with the exception of the addition of accounting policies for equity method investments and retroactive accounting noted below.

Equity Method Investments

Investments in which the Company has significant influence over the operating and financial policies of the investee are classified as equity method investments and are accounted for using the equity method of accounting. In applying the equity method of accounting, investments are initially recorded at cost and are subsequently adjusted based on the Company’s proportionate share of net income or loss of the investee. Adjustments are based on the most recently available financial information from the investee.Changes in the carrying value of such investments are recorded in net income as interest in income (loss) of equity method investments.

Retroactive Reinsurance

Retroactive reinsurance reimburses a ceding company for liabilities incurred as a result of past insurable events covered under contracts subject to the reinsurance. In certain instances, reinsurance contracts cover losses both on a prospective basis and on a retroactive basis and where practical the Company bifurcates the prospective and retrospective elements of these reinsurance contracts and accounts for each element separately. Initial gains in connection with retroactive reinsurance contracts are deferred and amortized into income over the settlement period while losses are recognized immediately. When changes in the estimated amount recoverable from the reinsurer or in the timing of receipts related to that amount occur, a cumulative amortization adjustment is recognized in earnings in the period of the change so that the deferred gain reflects the balance that would have existed had the revised estimate been available at the inception of the reinsurance transaction.

Reclassification

To facilitate comparison of information across periods, certain reclassifications have been made to prior year amounts to conform to the current year's presentation. These reclassifications did not impact our results of operations, financial condition or liquidity.

Equity Method Investments

Equity Method Investments

Investments in which the Company has significant influence over the operating and financial policies of the investee are classified as equity method investments and are accounted for using the equity method of accounting. In applying the equity method of accounting, investments are initially recorded at cost and are subsequently adjusted based on the Company’s proportionate share of net income or loss of the investee. Adjustments are based on the most recently available financial information from the investee.

Retroactive Reinsurance

Retroactive Reinsurance

Retroactive reinsurance reimburses a ceding company for liabilities incurred as a result of past insurable events covered under contracts subject to the reinsurance. In certain instances, reinsurance contracts cover losses both on a prospective basis and on a retroactive basis and where practical the Company bifurcates the prospective and retrospective elements of these reinsurance contracts and accounts for each element separately. Initial gains in connection with retroactive reinsurance contracts are deferred and amortized into income over the settlement period while losses are recognized immediately. When changes in the estimated amount recoverable from the reinsurer or in the timing of receipts related to that amount occur, a cumulative amortization adjustment is recognized in earnings in the period of the change so that the deferred gain reflects the balance that would have existed had the revised estimate been available at the inception of the reinsurance transaction.

New Accounting Standards Adopted in 2016

New Accounting Standards Adopted in 2016

Share-Based Compensation

Effective January 1, 2016, the Company adopted the Accounting Standards Update ("ASU") 2014-12, "Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could be Achieved after the Requisite Service Period" issued by the Financial Accounting Standards Board (the "FASB"). This guidance requires that compensation costs be recognized in the period in which it becomes probable that the performance target will be achieved and to represent the compensation cost attributable to the period(s) for which the requisite service has already been rendered. This guidance was issued to clarify treatment where there was a divergence in accounting practice and its adoption did not impact our results of operations, financial condition or liquidity.

Debt Issuance Costs

Effective January 1, 2016, the Company adopted ASU 2015-03, "Simplifying the Presentation of Debt Issuance Costs" issued by the FASB. This guidance requires the debt issuance costs related to a recognized debt liability to be presented in the balance sheet as a direct deduction from the debt liability rather than as an asset. This guidance was issued to simplify the presentation of debt issuance costs and to resolve conflicting guidance. This guidance did not impact our results of operations, financial condition or liquidity.

Investments Measured Using The Net Asset Value Per Share ("NAV") Practical Expedient

Effective January 1, 2016, the Company adopted ASU 2015-07, "Disclosures for Investments in Certain Entities That Calculate Net Asset Value per Share (or its Equivalent)" issued by the FASB. This guidance eliminated the requirement to categorize investments measured using the net asset value ("NAV") practical expedient in the fair value hierarchy table. As this new guidance related solely to disclosures, the adoption did not impact our results of operations, financial condition or liquidity. The updated disclosures have been provided in Note 4 'Fair Value Measurements'.

Recently Issued Accounting Standards Not Yet Adopted

Recently Issued Accounting Standards Not Yet Adopted

Leases

In February 2016, the FASB issued guidance that provides a new comprehensive model for lease accounting. The guidance will require most leases to be recognized on the balance sheet by recording a right-of-use asset and a corresponding lease liability. This guidance is effective for reporting periods beginning after December 15, 2018, and interim periods within those fiscal years with early adoption permitted. The Company is currently evaluating the impact of this guidance on our results of operations, financial condition and liquidity.

Transition To Equity Method Of Accounting

In March 2016, the FASB issued new guidance eliminating the requirement that an investor retrospectively apply equity method accounting when an existing investment qualifies for equity method accounting. The guidance is effective for annual periods beginning after December 15, 2016, and interim periods within those fiscal years with early adoption permitted. The guidance will be adopted on a prospective basis. The adoption of this guidance is not expected to materially impact our results of operations, financial condition or liquidity.

Share-Based Compensation Accounting

In March 2016, the FASB issued new guidance that will change the accounting for certain aspects of share-based compensation payments to employees. The guidance will require all income tax effects of awards to be recognized in the income statement when the awards vest or are settled. The guidance will also allow employers to increase the amounts withheld to cover income taxes on share-based compensation awards without requiring liability classification. Additionally, companies will be required to elect whether they will account for award forfeitures by recognizing forfeitures only as they occur or by estimating the number of awards expected to be forfeited. This guidance is effective for annual periods beginning after December 15, 2016, and interim periods within those fiscal years with early adoption permitted. The Company is currently evaluating the impact of this guidance on our results of operations, financial condition and liquidity.

Credit Losses

In June 2016, the FASB issued a new credit loss standard that changes the impairment model for most financial assets and certain other instruments. The guidance will replace the current "incurred loss" approach with a more forward looking "expected loss" model for instruments measured at amortized cost and will require entities to record allowances for available-for-sale debt securities rather than reduce the carrying amount. This guidance is effective for annual periods beginning after December 15, 2019, and interim periods within those fiscal years. Early adoption is permitted for annual periods beginning after December 15, 2018, and interim periods within those fiscal years. The Company is currently evaluating the impact of this guidance on our results of operations, financial condition and liquidity.

Cash Flows

In August 2016, the FASB issued new guidance to clarify how certain cash receipts and cash payments should be classified on the statement of cash flows. This guidance is effective for annual periods beginning after December 15, 2017, and interim periods within those fiscal years with early adoption permitted. The adoption of this guidance is not expected to impact our results of operations, financial condition or liquidity.

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SEGMENT INFORMATION (TABLES)

9 Months Ended

Sep. 30, 2016

Segment Reporting [Abstract]

UNDERWRITING RESULTS OF REPORTABLE SEGMENTS

The following tables summarize the underwriting results of our reportable segments, as well as the carrying values of allocated goodwill and intangible assets:

	2016									2015
Three months ended and at September 30,	Insurance			Reinsurance			Total			Insurance			Reinsurance			Total
Gross premiums written	$	675,430		$	284,532		$	959,962		$	606,704		$	329,879		$	936,583
Net premiums written	433,131			162,300			595,431			381,118			296,099			677,217
Net premiums earned	444,691			489,724			934,415			444,550			474,791			919,341
Other insurance related income	39			5,905			5,944			542			616			1,158
Net losses and loss expenses	(273,226		)	(259,102		)	(532,328		)	(283,272		)	(277,115		)	(560,387		)
Acquisition costs	(61,755		)	(128,055		)	(189,810		)	(69,118		)	(113,626		)	(182,744		)
General and administrative expenses	(84,588		)	(29,635		)	(114,223		)	(85,814		)	(35,309		)	(121,123		)
Underwriting income	$	25,161		$	78,837		103,998			$	6,888		$	49,357		56,245
Corporate expenses							(28,683		)							(23,604		)
Net investment income							116,923									45,685
Net realized investment gains (losses)							5,205									(69,957		)
Foreign exchange gains							13,795									28,088
Interest expense and financing costs							(12,839		)							(12,918		)
Termination fee received							—									280,000
Reorganization and related expenses							—									(45,867		)
Income before income taxes and interest in income (loss) of equity method investments							$	198,399								$	257,672
Net loss and loss expense ratio	61.4		%	52.9		%	57.0		%	63.7		%	58.4		%	61.0		%
Acquisition cost ratio	13.9		%	26.1		%	20.3		%	15.5		%	23.9		%	19.9		%
General and administrative expense ratio	19.1		%	6.1		%	15.3		%	19.4		%	7.4		%	15.7		%
Combined ratio	94.4		%	85.1		%	92.6		%	98.6		%	89.7		%	96.6		%
Goodwill and intangible assets	$	85,501		$	—		$	85,501		$	87,329		$	—		$	87,329

	2016									2015
Nine months ended and at September 30,	Insurance			Reinsurance			Total			Insurance			Reinsurance			Total
Gross premiums written	$	2,112,796		$	2,126,762		$	4,239,558		$	1,970,554		$	1,833,374		$	3,803,928
Net premiums written	1,433,058			1,855,529			3,288,587			1,352,122			1,727,185			3,079,307
Net premiums earned	1,322,649			1,461,097			2,783,746			1,344,339			1,420,266			2,764,605
Other insurance related income (loss)	(57		)	4,907			4,850			811			11,508			12,319
Net losses and loss expenses	(853,771		)	(809,813		)	(1,663,584		)	(866,580		)	(786,288		)	(1,652,868		)
Acquisition costs	(184,982		)	(374,588		)	(559,570		)	(200,493		)	(337,056		)	(537,549		)
General and administrative expenses	(252,652		)	(99,980		)	(352,632		)	(261,924		)	(110,701		)	(372,625		)
Underwriting income	$	31,187		$	181,623		212,810			$	16,153		$	197,729		213,882
Corporate expenses							(86,922		)							(83,826		)
Net investment income							257,818									226,336
Net realized investment losses							(40,295		)							(123,618		)
Foreign exchange gains							69,781									69,200
Interest expense and financing costs							(38,586		)							(38,114		)
Termination fee received							—									280,000
Reorganization and related expenses							—									(45,867		)
Income before income taxes and interest in income (loss) of equity method investments							$	374,606								$	497,993
Net loss and loss expense ratio	64.6		%	55.4		%	59.8		%	64.5		%	55.4		%	59.8		%
Acquisition cost ratio	14.0		%	25.6		%	20.1		%	14.9		%	23.7		%	19.4		%
General and administrative expense ratio	19.0		%	6.9		%	15.8		%	19.5		%	7.8		%	16.5		%
Combined ratio	97.6		%	87.9		%	95.7		%	98.9		%	86.9		%	95.7		%
Goodwill and intangible assets	$	85,501		$	—		$	85,501		$	87,329		$	—		$	87,329

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INVESTMENTS (TABLES)

9 Months Ended

Sep. 30, 2016

Investments, Debt and Equity Securities [Abstract]

AMORTIZED COST/COST AND FAIR VALUES OF FIXED MATURITIES AND EQUITIES

The amortized cost or cost and fair values of our fixed maturities and equities were as follows:

	Amortized Cost or Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value		Non-credit OTTI in AOCI(5)
At September 30, 2016
Fixed maturities
U.S. government and agency	$	1,542,943	$	22,349	$	(2,415	)	$	1,562,877	$	—
Non-U.S. government	620,601		4,799		(43,344		)	582,056		—
Corporate debt	4,516,290		87,184		(34,974		)	4,568,500		—
Agency RMBS(1)	2,473,832		49,661		(762		)	2,522,731		—
CMBS(2)	877,732		18,546		(2,003		)	894,275		—
Non-Agency RMBS	71,842		1,636		(1,648		)	71,830		(870		)
ABS(3)	1,234,292		4,028		(2,724		)	1,235,596		—
Municipals(4)	124,867		4,215		(87		)	128,995		—
Total fixed maturities	$	11,462,399	$	192,418	$	(87,957	)	$	11,566,860	$	(870	)
Equity securities
Common stocks	$	379	$	38	$	(348	)	$	69
Exchange-traded funds	463,655		41,611		(1,060		)	504,206
Bond mutual funds	136,570		3,499		—			140,069
Total equity securities	$	600,604	$	45,148	$	(1,408	)	$	644,344
At December 31, 2015
Fixed maturities
U.S. government and agency	$	1,673,617	$	1,545	$	(23,213	)	$	1,651,949	$	—
Non-U.S. government	809,025		2,312		(72,332		)	739,005		—
Corporate debt	4,442,315		16,740		(96,286		)	4,362,769		—
Agency RMBS(1)	2,236,138		22,773		(9,675		)	2,249,236		—
CMBS(2)	1,088,595		3,885		(9,182		)	1,083,298		—
Non-Agency RMBS	99,989		1,992		(973		)	101,008		(875		)
ABS(3)	1,387,919		952		(17,601		)	1,371,270		—
Municipals(4)	160,041		2,319		(1,146		)	161,214		—
Total fixed maturities	$	11,897,639	$	52,518	$	(230,408	)	$	11,719,749	$	(875	)
Equity securities
Common stocks	$	—	$	—	$	—		$	—
Exchange-traded funds	447,524		31,211		(4,762		)	473,973
Bond mutual funds	128,252		—		(4,227		)	124,025
Total equity securities	$	575,776	$	31,211	$	(8,989	)	$	597,998

(1) Residential mortgage-backed securities (RMBS) originated by U.S. agencies.

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

(3) Asset-backed securities (ABS) include debt tranched securities collateralized primarily by auto loans, student loans, credit cards, and other asset types. This asset class also includes collateralized loan obligations (CLOs) and collateralized debt obligations (CDOs).

(4) Municipals include bonds issued by states, municipalities and political subdivisions.

(5) Represents the non-credit component of the other-than-temporary impairment (OTTI) losses, adjusted for subsequent sales, maturities and redemptions. It does not include the change in fair value subsequent to the impairment measurement date.

CONTRACTUAL MATURITIES OF FIXED MATURITIES

The contractual maturities of fixed maturities are shown below. Expected maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties.

	Amortized Cost		Fair Value		% of Total Fair Value
At September 30, 2016
Maturity
Due in one year or less	$	363,821	$	356,706	3.0	%
Due after one year through five years	3,809,515		3,801,104		32.9	%
Due after five years through ten years	2,286,970		2,330,895		20.2	%
Due after ten years	344,395		353,723		3.1	%
	6,804,701		6,842,428		59.2	%
Agency RMBS	2,473,832		2,522,731		21.8	%
CMBS	877,732		894,275		7.7	%
Non-Agency RMBS	71,842		71,830		0.6	%
ABS	1,234,292		1,235,596		10.7	%
Total	$	11,462,399	$	11,566,860	100.0	%
At December 31, 2015
Maturity
Due in one year or less	$	291,368	$	289,571	2.5	%
Due after one year through five years	4,217,515		4,142,802		35.3	%
Due after five years through ten years	2,263,684		2,181,525		18.6	%
Due after ten years	312,431		301,039		2.6	%
	7,084,998		6,914,937		59.0	%
Agency RMBS	2,236,138		2,249,236		19.2	%
CMBS	1,088,595		1,083,298		9.2	%
Non-Agency RMBS	99,989		101,008		0.9	%
ABS	1,387,919		1,371,270		11.7	%
Total	$	11,897,639	$	11,719,749	100.0	%

FIXED MATURITIES AND EQUITIES IN AN UNREALIZED LOSS POSITION

The following table summarizes fixed maturities and equities in an unrealized loss position and the aggregate fair value and gross unrealized loss by length of time the security has continuously been in an unrealized loss position:

	12 months or greater					Less than 12 months					Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
At September 30, 2016
Fixed maturities
U.S. government and agency	$	55,000	$	(1,635	)	$	422,681	$	(780	)	$	477,681	$	(2,415	)
Non-U.S. government	104,441		(24,061		)	254,694		(19,283		)	359,135		(43,344		)
Corporate debt	285,848		(26,202		)	639,722		(8,772		)	925,570		(34,974		)
Agency RMBS	80,375		(556		)	121,203		(206		)	201,578		(762		)
CMBS	99,004		(1,260		)	173,795		(743		)	272,799		(2,003		)
Non-Agency RMBS	10,184		(1,306		)	5,187		(342		)	15,371		(1,648		)
ABS	518,647		(2,253		)	50,402		(471		)	569,049		(2,724		)
Municipals	2,384		(18		)	15,567		(69		)	17,951		(87		)
Total fixed maturities	$	1,155,883	$	(57,291	)	$	1,683,251	$	(30,666	)	$	2,839,134	$	(87,957	)
Equity securities
Common stocks	$	—	$	—		$	31	$	(348	)	$	31	$	(348	)
Exchange-traded funds	6,153		(425		)	39,097		(635		)	45,250		(1,060		)
Bond mutual funds	—		—			—		—			—		—
Total equity securities	$	6,153	$	(425	)	$	39,128	$	(983	)	$	45,281	$	(1,408	)
At December 31, 2015
Fixed maturities
U.S. government and agency	$	84,179	$	(7,622	)	$	1,474,202	$	(15,591	)	$	1,558,381	$	(23,213	)
Non-U.S. government	170,269		(50,841		)	317,693		(21,491		)	487,962		(72,332		)
Corporate debt	340,831		(33,441		)	2,845,375		(62,845		)	3,186,206		(96,286		)
Agency RMBS	64,792		(1,609		)	1,073,566		(8,066		)	1,138,358		(9,675		)
CMBS	75,627		(1,579		)	659,480		(7,603		)	735,107		(9,182		)
Non-Agency RMBS	5,283		(210		)	43,199		(763		)	48,482		(973		)
ABS	562,599		(11,158		)	667,448		(6,443		)	1,230,047		(17,601		)
Municipals	14,214		(310		)	64,104		(836		)	78,318		(1,146		)
Total fixed maturities	$	1,317,794	$	(106,770	)	$	7,145,067	$	(123,638	)	$	8,462,861	$	(230,408	)
Equity securities
Common stocks	$	—	$	—		$	—	$	—		$	—	$	—
Exchange-traded funds	2,331		(313		)	110,972		(4,449		)	113,303		(4,762		)
Bond mutual funds	—		—			124,025		(4,227		)	124,025		(4,227		)
Total equity securities	$	2,331	$	(313	)	$	234,997	$	(8,676	)	$	237,328	$	(8,989	)

MORTGAGE LOANS NET OF VALUATION ALLOWANCE

The following table provides a breakdown of our mortgage loans held-for-investment:

	September 30, 2016				December 31, 2015
	Carrying Value		% of Total		Carrying Value		% of Total
Mortgage Loans held-for-investment:
Commercial	$	332,753	100	%	$	206,277	100	%
	332,753		100	%	206,277		100	%
Valuation allowances	—		—	%	—		—	%
Total Mortgage Loans held-for-investment	$	332,753	100	%	$	206,277	100	%

PORTFOLIO OF OTHER INVESTMENTS

The following table provides a breakdown of our investments in hedge funds, direct lending funds, private equity funds, real estate funds, CLO Equities and other privately held investments, together with additional information relating to the liquidity of each category:

	Fair Value				Redemption Frequency (if currently eligible)	Redemption     Notice Period
At September 30, 2016
Long/short equity funds	$	139,460	16	%	Quarterly, Semi-annually, Annually	45-60 days
Multi-strategy funds	281,153		33	%	Quarterly, Semi-annually	60-95 days
Event-driven funds	94,012		11	%	Quarterly, Annually	45-60 days
Leveraged bank loan funds	—		—	%	n/a	n/a
Direct lending funds	125,002		15	%	n/a	n/a
Private equity funds	89,170		11	%	n/a	n/a
Real estate funds	11,782		1	%	n/a	n/a
CLO - Equities	63,783		8	%	n/a	n/a
Other privately held investments	42,900		5	%	n/a	n/a
Total other investments	$	847,262	100	%
At December 31, 2015
Long/short equity funds	$	154,348	19	%	Quarterly, Semi-annually, Annually	45-60 days
Multi-strategy funds	355,073		43	%	Quarterly, Semi-annually	60-95 days
Event-driven funds	147,287		18	%	Quarterly, Annually	45-60 days
Leveraged bank loan funds	65		—	%	n/a	n/a
Direct lending funds	90,120		11	%	n/a	n/a
Private equity funds	—		—	%	n/a	n/a
Real estate funds	4,929		1	%	n/a	n/a
CLO - Equities	64,934		8	%	n/a	n/a
Other privately held investments	—		—	%	n/a	n/a
Total other investments	$	816,756	100	%

n/a -notapplicable

NET INVESTMENT INCOME

Net investment income was derived from the following sources:

	Three months ended September 30,						Nine months ended September 30,
	2016			2015			2016			2015
Fixed maturities	$	75,827		$	75,980		$	229,423		$	220,066
Other investments	38,248			(27,421		)	25,770			17,616
Equity securities	4,633			3,445			12,843			7,795
Mortgage loans	2,191			482			5,683			776
Cash and cash equivalents	3,768			993			7,071			3,770
Short-term investments	337			83			708			277
Gross investment income	125,004			53,562			281,498			250,300
Investment expenses	(8,081		)	(7,877		)	(23,680		)	(23,964		)
Net investment income	$	116,923		$	45,685		$	257,818		$	226,336

NET REALIZED INVESTMENT GAINS (LOSSES)

The following table provides an analysis of net realized investment gains (losses):

	Three months ended September 30,						Nine months ended September 30,
	2016			2015			2016			2015
Gross realized gains
Fixed maturities and short-term investments	$	26,211		$	12,126		$	67,833		$	44,853
Equities	5,570			232			18,804			447
Gross realized gains	31,781			12,358			86,637			45,300
Gross realized losses
Fixed maturities and short-term investments	(21,908		)	(54,867		)	(90,702		)	(111,432		)
Equities	(576		)	(1,559		)	(15,923		)	(1,952		)
Gross realized losses	(22,484		)	(56,426		)	(106,625		)	(113,384		)
Net OTTI recognized in earnings	(4,247		)	(32,301		)	(20,346		)	(62,762		)
Change in fair value of investment derivatives(1)	155			6,412			39			7,228
Net realized investment gains (losses)	$	5,205		$	(69,957	)	$	(40,295	)	$	(123,618	)

(1) Refer to Note 5 – Derivative Instruments

OTTI RECOGNIZED IN EARNINGS BY ASSET CLASS

The following table summarizes the OTTI recognized in earnings by asset class:

	Three months ended September 30,				Nine months ended September 30,
	2016		2015		2016		2015
Fixed maturities:
Non-U.S. government	$	2,456	$	1,295	$	2,953	$	2,717
Corporate debt	1,791		20,587		14,833		38,396
Non-Agency RMBS	—		—		—		4
ABS	—		84		—		124
	4,247		21,966		17,786		41,241
Equity Securities
Exchange-traded funds	—		10,335		2,560		10,335
Bond mutual funds	—		—		—		11,186
	—		10,335		2,560		21,521
Total OTTI recognized in earnings	$	4,247	$	32,301	$	20,346	$	62,762

ROLL FORWARD OF CREDIT LOSSES FOR WHICH A PORTION OF OTTI RECOGNIZED IN AOCI

The following table provides a roll forward of the credit losses, before income taxes, for which a portion of the OTTI was recognized in AOCI:

	Three months ended September 30,						Nine months ended September 30,
	2016			2015			2016			2015
Balance at beginning of period	$	1,513		$	1,564		$	1,506		$	1,531
Credit impairments recognized on securities not previously impaired	—			—			—			—
Additional credit impairments recognized on securities previously impaired	—			—			7			33
Change in timing of future cash flows on securities previously impaired	—			—			—			—
Intent to sell of securities previously impaired	—			—			—			—
Securities sold/redeemed/matured	(33		)	(43		)	(33		)	(43		)
Balance at end of period	$	1,480		$	1,521		$	1,480		$	1,521

XML

FAIR VALUE MEASUREMENTS (TABLES)

9 Months Ended

Sep. 30, 2016

Fair Value Disclosures [Abstract]

FINANCIAL INSTRUMENTS MEASURED AT FAIR VALUE ON A RECURRING BASIS

The tables below present the financial instruments measured at fair value on a recurring basis for the periods indicated:

	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Fair value based on NAV practical expedient		Total Fair Value
At September 30, 2016
Assets
Fixed maturities
U.S. government and agency	$	1,522,246	$	40,631	$	—	$	—	$	1,562,877
Non-U.S. government	—		582,056		—		—		582,056
Corporate debt	—		4,499,408		69,092		—		4,568,500
Agency RMBS	—		2,522,731		—		—		2,522,731
CMBS	—		885,355		8,920		—		894,275
Non-Agency RMBS	—		71,830		—		—		71,830
ABS	—		1,235,596		—		—		1,235,596
Municipals	—		128,995		—		—		128,995
	1,522,246		9,966,602		78,012		—		11,566,860
Equity securities
Common stocks	69		—		—		—		69
Exchange-traded funds	504,206		—		—		—		504,206
Bond mutual funds	—		140,069		—		—		140,069
	504,275		140,069		—		—		644,344
Other investments
Hedge funds	—		—		—		514,625		514,625
Direct lending funds	—		—		—		125,002		125,002
Private equity funds	—		—		—		89,170		89,170
Real estate funds	—		—		—		11,782		11,782
Other privately held investments	—		—		42,900		—		42,900
CLO - Equities	—		—		63,783		—		63,783
	—		—		106,683		740,579		847,262
Short-term investments	—		39,877		—		—		39,877
Other assets
Derivative instruments (see Note 5)	—		4,469		2,488		—		6,957
Insurance-linked securities	—		—		25,283		—		25,283
Total Assets	$	2,026,521	$	10,151,017	$	212,466	$	740,579	$	13,130,583
Liabilities
Derivative instruments (see Note 5)	$	—	$	4,411	$	8,184	$	—	$	12,595
Cash settled awards (see Note 7)	—		34,288		—		—		34,288
Total Liabilities	$	—	$	38,699	$	8,184	$	—	$	46,883

	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Fair value based on NAV practical expedient		Total Fair Value
At December 31, 2015
Assets
Fixed maturities
U.S. government and agency	$	1,632,355	$	19,594	$	—	$	—	$	1,651,949
Non-U.S. government	—		739,005		—		—		739,005
Corporate debt	—		4,324,251		38,518		—		4,362,769
Agency RMBS	—		2,249,236		—		—		2,249,236
CMBS	—		1,072,376		10,922		—		1,083,298
Non-Agency RMBS	—		101,008		—		—		101,008
ABS	—		1,371,270		—		—		1,371,270
Municipals	—		161,214		—		—		161,214
	1,632,355		10,037,954		49,440		—		11,719,749
Equity securities
Common stocks	—		—		—		—		—
Exchange-traded funds	473,973		—		—		—		473,973
Bond mutual funds	—		124,025		—		—		124,025
	473,973		124,025		—		—		597,998
Other investments
Hedge funds	—		—		—		656,773		656,773
Direct lending funds	—		—		—		90,120		90,120
Private equity funds	—		—		—		—		—
Real estate funds	—		—		—		4,929		4,929
Other privately held investments	—		—		—		—		—
CLO - Equities	—		—		27,257		37,677		64,934
	—		—		27,257		789,499		816,756
Short-term investments	—		34,406		—		—		34,406
Other assets
Derivative instruments (see Note 5)	—		2,072		4,395		—		6,467
Insurance-linked securities	—		—		24,925		—		24,925
Total Assets	$	2,106,328	$	10,198,457	$	106,017	$	789,499	$	13,200,301
Liabilities
Derivative instruments (see Note 5)	$	—	$	7,692	$	10,937	$	—	$	18,629
Cash settled awards (see Note 7)	—		33,215		—		—		33,215
Total Liabilities	$	—	$	40,907	$	10,937	$	—	$	51,844

LEVEL 3 FAIR VALUE MEASUREMENT INPUTS

Except certain fixed maturities and insurance-linked securities priced using broker-dealer quotes (underlying inputs are not available), the following table quantifies the significant unobservable inputs we have used in estimating fair value at September 30,2016 for our investments classified as Level 3 in the fair value hierarchy.

	Fair Value			Valuation Technique	Unobservable Input	Range	Weighted Average
Other investments - CLO - Equities	$	35,594		Discounted cash flow	Default rates	4.0%	4.0%
					Loss severity rate	35.0% - 53.5%	35.4%
					Collateral spreads	3.6% - 4.0%	4.0%
					Estimated maturity dates	2 - 6 years	6 years
	28,189			Liquidation value	Fair value of collateral	100%	100%
					Discount margin	0.1% - 19.1%	2.4%
Other investments - Other privately held investments	42,900			Discounted cash flow	Discount rate	5.0% - 8.0%	7.2%
Derivatives - Weather derivatives, net	$	(5,696	)	Simulation model	Weather curve	1 - 2294(1)	n/a (2)
					Weather standard deviation	1 - 1029(1)	n/a (2)

(1) Measured in Heating Degree Days ("HDD") which is the number of degrees the daily temperature is below a reference temperature. The cumulative HDD for the duration of the derivatives contract is compared to the strike value to determine the necessary settlement.

(2) Due to the diversity of the portfolio, the range of unobservable inputs can be widespread; therefore, presentation of a weighted average is not useful. Weather parameters may include various temperature and/or precipitation measures that will naturally vary by geographic location of each counterparty's operations.

CHANGES IN LEVEL 3 FINANCIAL INSTRUMENTS MEASURED AT FAIR VALUE ON A RECURRING BASIS, LIABILITIES

The following tables present changes in Level 3 for financial instruments measured at fair value on a recurring basis for the periods indicated:

	Opening Balance		Transfers into Level 3		Transfers out of Level 3			Included in earnings (1)			Included in OCI (2)			Purchases		Sales			Settlements/ Distributions			Closing Balance		Change in unrealized investment gain/(loss) (3)
Three months ended September 30, 2016
Fixed maturities
Corporate debt	$	62,022	$	—	$	—		$	(9	)	$	100		$	7,563	$	—		$	(584	)	$	69,092	$	—
CMBS	10,210		—		—			—			(48		)	—		—			(1,242		)	8,920		—
ABS	—		—		—			—			—			—		—			—			—		—
	72,232		—		—			(9		)	52			7,563		—			(1,826		)	78,012		—
Other investments
Other privately held investments	41,755		—		—			(355		)	—			1,500		—			—			42,900		(355		)
CLO - Equities	65,883		—		—			8,419			—			—		—			(10,519		)	63,783		8,419
	107,638		—		—			8,064			—			1,500		—			(10,519		)	106,683		8,064
Other assets
Derivative instruments	5		—		—			665			—			1,818		—			—			2,488		665
Insurance-linked securities	25,025		—		—			258			—			—		—			—			25,283		258
	25,030		—		—			923			—			1,818		—			—			27,771		923
Total assets	$	204,900	$	—	$	—		$	8,978		$	52		$	10,881	$	—		$	(12,345	)	$	212,466	$	8,987
Other liabilities
Derivative instruments	$	1,978	$	—	$	—		$	(169	)	$	—		$	6,384	$	—		$	(9	)	$	8,184	$	335
Total liabilities	$	1,978	$	—	$	—		$	(169	)	$	—		$	6,384	$	—		$	(9	)	$	8,184	$	335
Nine months ended September 30, 2016
Fixed maturities
Corporate debt	$	38,518	$	20,412	$	(1,955	)	$	(988	)	$	1,188		$	17,107	$	(4,015	)	$	(1,175	)	$	69,092	$	—
CMBS	10,922		—		—			—			(134		)	—		—			(1,868		)	8,920		—
ABS	—		—		—			—			—			—		—			—			—		—
	49,440		20,412		(1,955		)	(988		)	1,054			17,107		(4,015		)	(3,043		)	78,012		—
Other investments
Other privately held investments	—		—		—			(1,505		)	—			44,405		—			—			42,900		(1,505		)
CLO - Equities	27,257		36,378		—			17,431			—			—		—			(17,283		)	63,783		17,431
	27,257		36,378		—			15,926			—			44,405		—			(17,283		)	106,683		15,926
Other assets
Derivative instruments	4,395		—		—			3,255			—			3,623		—			(8,785		)	2,488		669
Insurance-linked securities	24,925		—		—			358			—			—		—			—			25,283		358
	29,320		—		—			3,613			—			3,623		—			(8,785		)	27,771		1,027
Total assets	$	106,017	$	56,790	$	(1,955	)	$	18,551		$	1,054		$	65,135	$	(4,015	)	$	(29,111	)	$	212,466	$	16,953
Other liabilities
Derivative instruments	$	10,937	$	—	$	—		$	2,445		$	—		$	7,189	$	—		$	(12,387	)	$	8,184	$	457
Total liabilities	$	10,937	$	—	$	—		$	2,445		$	—		$	7,189	$	—		$	(12,387	)	$	8,184	$	457

	Opening Balance		Transfers into Level 3		Transfers out of Level 3			Included in earnings (1)			Included in OCI (2)			Purchases		Sales		Settlements/ Distributions			Closing Balance		Change in unrealized investment gain/(loss) (3)
Three months ended September 30, 2015
Fixed maturities
Corporate debt	$	43,008	$	—	$	—		$	(2	)	$	300		$	22,821	$	—	$	(4,403	)	$	61,724	$	—
CMBS	21,900		—		(9,902		)	—			(219		)	—		—		(461		)	11,318		—
ABS	110		—		—			—			—			—		—		(3		)	107		—
	65,018		—		(9,902		)	(2		)	81			22,821		—		(4,867		)	73,149		—
Other investments
Other privately held investments	—		—		—			—			—			—		—		—			—		—
CLO - Equities	36,921		—		—			1,192			—			—		—		(3,118		)	34,995		1,192
	36,921		—		—			1,192			—			—		—		(3,118		)	34,995		1,192
Other assets
Derivative instruments	240		—		—			35			—			—		—		(240		)	35		35
Insurance-linked securities	24,837		—		—			175			—			—		—		—			25,012		175
	25,077		—		—			210			—			—		—		(240		)	25,047		210
Total assets	$	127,016	$	—	$	(9,902	)	$	1,400		$	81		$	22,821	$	—	$	(8,225	)	$	133,191	$	1,402
Other liabilities
Derivative instruments	$	818	$	—	$	—		$	(331	)	$	—		$	6,475	$	—	$	—		$	6,962	$	(331	)
Total liabilities	$	818	$	—	$	—		$	(331	)	$	—		$	6,475	$	—	$	—		$	6,962	$	(331	)
Nine months ended September 30, 2015
Fixed maturities
Corporate debt	$	15,837	$	—	$	—		$	(2	)	$	724		$	54,445	$	—	$	(9,280	)	$	61,724	$	—
CMBS	17,763		5,072		(9,902		)	—			(543		)	—		—		(1,072		)	11,318		—
ABS	40,031		—		(39,851		)	—			105			—		—		(178		)	107		—
	73,631		5,072		(49,753		)	(2		)	286			54,445		—		(10,530		)	73,149		—
Other investments
Other privately held investments	—		—		—			—			—			—		—		—			—		—
CLO - Equities	37,046		—		—			7,930			—			—		—		(9,981		)	34,995		7,930
	37,046		—		—			7,930			—			—		—		(9,981		)	34,995		7,930
Other assets
Derivative instruments	111		—		—			(792		)	—			—		—		716			35		35
Insurance-linked securities	—		—		—			12			—			25,000		—		—			25,012		12
	111		—		—			(780		)	—			25,000		—		716			25,047		47
Total assets	$	110,788	$	5,072	$	(49,753	)	$	7,148		$	286		$	79,445	$	—	$	(19,795	)	$	133,191	$	7,977
Other liabilities
Derivative instruments	$	15,288	$	—	$	—		$	(12,053	)	$	—		$	8,698	$	—	$	(4,971	)	$	6,962	$	(318	)
Total liabilities	$	15,288	$	—	$	—		$	(12,053	)	$	—		$	8,698	$	—	$	(4,971	)	$	6,962	$	(318	)

(1) Gains and losses included in earnings on fixed maturities are included in net realized investment gains (losses). Gains and (losses) included in earnings on other investments are included in net investment income. Gains (losses) on weather derivatives included in earnings are included in other insurance-related income.

(2) Gains and losses included in other comprehensive income (“OCI”) on fixed maturities are included in unrealized gains (losses) arising during the period.

(3) Change in unrealized investment gain (loss) relating to assets held at the reporting date.

CHANGES IN LEVEL 3 FINANCIAL INSTRUMENTS MEASURED AT FAIR VALUE ON A RECURRING BASIS, ASSETS

The following tables present changes in Level 3 for financial instruments measured at fair value on a recurring basis for the periods indicated:

	Opening Balance		Transfers into Level 3		Transfers out of Level 3			Included in earnings (1)			Included in OCI (2)			Purchases		Sales			Settlements/ Distributions			Closing Balance		Change in unrealized investment gain/(loss) (3)
Three months ended September 30, 2016
Fixed maturities
Corporate debt	$	62,022	$	—	$	—		$	(9	)	$	100		$	7,563	$	—		$	(584	)	$	69,092	$	—
CMBS	10,210		—		—			—			(48		)	—		—			(1,242		)	8,920		—
ABS	—		—		—			—			—			—		—			—			—		—
	72,232		—		—			(9		)	52			7,563		—			(1,826		)	78,012		—
Other investments
Other privately held investments	41,755		—		—			(355		)	—			1,500		—			—			42,900		(355		)
CLO - Equities	65,883		—		—			8,419			—			—		—			(10,519		)	63,783		8,419
	107,638		—		—			8,064			—			1,500		—			(10,519		)	106,683		8,064
Other assets
Derivative instruments	5		—		—			665			—			1,818		—			—			2,488		665
Insurance-linked securities	25,025		—		—			258			—			—		—			—			25,283		258
	25,030		—		—			923			—			1,818		—			—			27,771		923
Total assets	$	204,900	$	—	$	—		$	8,978		$	52		$	10,881	$	—		$	(12,345	)	$	212,466	$	8,987
Other liabilities
Derivative instruments	$	1,978	$	—	$	—		$	(169	)	$	—		$	6,384	$	—		$	(9	)	$	8,184	$	335
Total liabilities	$	1,978	$	—	$	—		$	(169	)	$	—		$	6,384	$	—		$	(9	)	$	8,184	$	335
Nine months ended September 30, 2016
Fixed maturities
Corporate debt	$	38,518	$	20,412	$	(1,955	)	$	(988	)	$	1,188		$	17,107	$	(4,015	)	$	(1,175	)	$	69,092	$	—
CMBS	10,922		—		—			—			(134		)	—		—			(1,868		)	8,920		—
ABS	—		—		—			—			—			—		—			—			—		—
	49,440		20,412		(1,955		)	(988		)	1,054			17,107		(4,015		)	(3,043		)	78,012		—
Other investments
Other privately held investments	—		—		—			(1,505		)	—			44,405		—			—			42,900		(1,505		)
CLO - Equities	27,257		36,378		—			17,431			—			—		—			(17,283		)	63,783		17,431
	27,257		36,378		—			15,926			—			44,405		—			(17,283		)	106,683		15,926
Other assets
Derivative instruments	4,395		—		—			3,255			—			3,623		—			(8,785		)	2,488		669
Insurance-linked securities	24,925		—		—			358			—			—		—			—			25,283		358
	29,320		—		—			3,613			—			3,623		—			(8,785		)	27,771		1,027
Total assets	$	106,017	$	56,790	$	(1,955	)	$	18,551		$	1,054		$	65,135	$	(4,015	)	$	(29,111	)	$	212,466	$	16,953
Other liabilities
Derivative instruments	$	10,937	$	—	$	—		$	2,445		$	—		$	7,189	$	—		$	(12,387	)	$	8,184	$	457
Total liabilities	$	10,937	$	—	$	—		$	2,445		$	—		$	7,189	$	—		$	(12,387	)	$	8,184	$	457

	Opening Balance		Transfers into Level 3		Transfers out of Level 3			Included in earnings (1)			Included in OCI (2)			Purchases		Sales		Settlements/ Distributions			Closing Balance		Change in unrealized investment gain/(loss) (3)
Three months ended September 30, 2015
Fixed maturities
Corporate debt	$	43,008	$	—	$	—		$	(2	)	$	300		$	22,821	$	—	$	(4,403	)	$	61,724	$	—
CMBS	21,900		—		(9,902		)	—			(219		)	—		—		(461		)	11,318		—
ABS	110		—		—			—			—			—		—		(3		)	107		—
	65,018		—		(9,902		)	(2		)	81			22,821		—		(4,867		)	73,149		—
Other investments
Other privately held investments	—		—		—			—			—			—		—		—			—		—
CLO - Equities	36,921		—		—			1,192			—			—		—		(3,118		)	34,995		1,192
	36,921		—		—			1,192			—			—		—		(3,118		)	34,995		1,192
Other assets
Derivative instruments	240		—		—			35			—			—		—		(240		)	35		35
Insurance-linked securities	24,837		—		—			175			—			—		—		—			25,012		175
	25,077		—		—			210			—			—		—		(240		)	25,047		210
Total assets	$	127,016	$	—	$	(9,902	)	$	1,400		$	81		$	22,821	$	—	$	(8,225	)	$	133,191	$	1,402
Other liabilities
Derivative instruments	$	818	$	—	$	—		$	(331	)	$	—		$	6,475	$	—	$	—		$	6,962	$	(331	)
Total liabilities	$	818	$	—	$	—		$	(331	)	$	—		$	6,475	$	—	$	—		$	6,962	$	(331	)
Nine months ended September 30, 2015
Fixed maturities
Corporate debt	$	15,837	$	—	$	—		$	(2	)	$	724		$	54,445	$	—	$	(9,280	)	$	61,724	$	—
CMBS	17,763		5,072		(9,902		)	—			(543		)	—		—		(1,072		)	11,318		—
ABS	40,031		—		(39,851		)	—			105			—		—		(178		)	107		—
	73,631		5,072		(49,753		)	(2		)	286			54,445		—		(10,530		)	73,149		—
Other investments
Other privately held investments	—		—		—			—			—			—		—		—			—		—
CLO - Equities	37,046		—		—			7,930			—			—		—		(9,981		)	34,995		7,930
	37,046		—		—			7,930			—			—		—		(9,981		)	34,995		7,930
Other assets
Derivative instruments	111		—		—			(792		)	—			—		—		716			35		35
Insurance-linked securities	—		—		—			12			—			25,000		—		—			25,012		12
	111		—		—			(780		)	—			25,000		—		716			25,047		47
Total assets	$	110,788	$	5,072	$	(49,753	)	$	7,148		$	286		$	79,445	$	—	$	(19,795	)	$	133,191	$	7,977
Other liabilities
Derivative instruments	$	15,288	$	—	$	—		$	(12,053	)	$	—		$	8,698	$	—	$	(4,971	)	$	6,962	$	(318	)
Total liabilities	$	15,288	$	—	$	—		$	(12,053	)	$	—		$	8,698	$	—	$	(4,971	)	$	6,962	$	(318	)

(1) Gains and losses included in earnings on fixed maturities are included in net realized investment gains (losses). Gains and (losses) included in earnings on other investments are included in net investment income. Gains (losses) on weather derivatives included in earnings are included in other insurance-related income.

(2) Gains and losses included in other comprehensive income (“OCI”) on fixed maturities are included in unrealized gains (losses) arising during the period.

(3) Change in unrealized investment gain (loss) relating to assets held at the reporting date.

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DERIVATIVE INSTRUMENTS (TABLES)

9 Months Ended

Sep. 30, 2016

Derivative Instruments and Hedging Activities Disclosure [Abstract]

LOCATION AND AMOUNTS OF DERIVATIVE FAIR VALUES ON THE CONSOLIDATED BALANCE SHEET

The following table summarizes the balance sheet classification of derivatives recorded at fair values. The notional amount of derivative contracts represents the basis upon which pay or receive amounts are calculated and is presented in the table to quantify the volume of our derivative activities. Notional amounts are not reflective of credit risk.

None of our derivative instruments are designated as hedges under current accounting guidance.

	September 30, 2016						December 31, 2015
	Derivative Notional Amount		Derivative Asset Fair Value(1)		Derivative Liability Fair Value(1)		Derivative Notional Amount		Derivative Asset Fair Value(1)		Derivative Liability Fair Value(1)
Relating to investment portfolio:
Foreign exchange forward contracts	$	40,367	$	279	$	17	$	198,406	$	490	$	837
Interest rate swaps	—		—		—		—		—		—
Relating to underwriting portfolio:
Foreign exchange forward contracts	560,477		25		4,394		692,023		1,582		6,855
Weather-related contracts	59,436		2,488		8,184		51,395		4,395		10,937
Commodity contracts	181,000		4,165		—		—		—		—
Total derivatives			$	6,957	$	12,595			$	6,467	$	18,629

(1) Asset and liability derivatives are classified within other assets and other liabilities in the Consolidated Balance Sheets.

RECONCILIATION OF GROSS DERIVATIVE ASSETS TO NET AMOUNTS PRESENTED IN BALANCE SHEETS

The table below presents a reconciliation of our gross derivative assets and liabilities to the net amounts presented in our Consolidated Balance Sheets, with the difference being attributable to the impact of master netting agreements.

	September 30, 2016							December 31, 2015
	Gross Amounts		Gross Amounts Offset			Net Amounts(1)		Gross Amounts		Gross Amounts Offset			Net Amounts(1)
Derivative assets	$	9,370	$	(2,413	)	$	6,957	$	14,336	$	(7,869	)	$	6,467
Derivative liabilities	$	15,008	$	(2,413	)	$	12,595	$	26,498	$	(7,869	)	$	18,629

(1) Net asset and liability derivatives are classified within other assets and other liabilities in the Consolidated Balance Sheets.

RECONCILIATION OF GROSS DERIVATIVE LIABILITIES TO NET AMOUNTS PRESENTED IN BALANCE SHEETS

The table below presents a reconciliation of our gross derivative assets and liabilities to the net amounts presented in our Consolidated Balance Sheets, with the difference being attributable to the impact of master netting agreements.

	September 30, 2016							December 31, 2015
	Gross Amounts		Gross Amounts Offset			Net Amounts(1)		Gross Amounts		Gross Amounts Offset			Net Amounts(1)
Derivative assets	$	9,370	$	(2,413	)	$	6,957	$	14,336	$	(7,869	)	$	6,467
Derivative liabilities	$	15,008	$	(2,413	)	$	12,595	$	26,498	$	(7,869	)	$	18,629

(1) Net asset and liability derivatives are classified within other assets and other liabilities in the Consolidated Balance Sheets.

TOTAL UNREALIZED AND REALIZED GAINS (LOSSES) ON DERIVATIVES NOT DESIGNATED AS HEDGES RECORDED IN EARNINGS

The total unrealized and realized gains (losses) recognized in earnings for derivatives not designated as hedges were as follows:

	Location of Gain (Loss) Recognized in Income on Derivative	Three months ended September 30,						Nine months ended September 30,
		2016			2015			2016			2015
Derivatives not designated as hedging instruments
Relating to investment portfolio:
Foreign exchange forward contracts	Net realized investment gains (losses)	$	155		$	6,412		$	39		$	11,234
Interest rate swaps	Net realized investment gains (losses)	—			—			—			(4,006		)
Relating to underwriting portfolio:
Foreign exchange forward contracts	Foreign exchange losses (gains)	(182		)	(5,210		)	(2,958		)	(21,494		)
Weather-related contracts	Other insurance related income (losses)	833			307			809			11,274
Commodity contracts	Other insurance related income (losses)	1,799			(33		)	1,499			(923		)
Total		$	2,605		$	1,476		$	(611	)	$	(3,915	)

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RESERVE FOR LOSSES AND LOSS EXPENSES (TABLES)

9 Months Ended

Sep. 30, 2016

Insurance Loss Reserves [Abstract]

RECONCILIATION OF BEGINNING AND ENDING GROSS RESERVE FOR LOSSES AND LOSS EXPENSES AND NET RESERVE FOR UNPAID LOSSES AND LOSS EXPENSES

The following table presents a reconciliation of our beginning and ending gross reserve for losses and loss expenses and net reserve for unpaid losses and loss expenses for the periods indicated:

Nine months ended September 30,	2016			2015
Gross reserve for losses and loss expenses, beginning of period	$	9,646,285		$	9,596,797
Less reinsurance recoverable on unpaid losses, beginning of period	(2,031,309		)	(1,890,280		)
Net reserve for unpaid losses and loss expenses, beginning of period	7,614,976			7,706,517
Net incurred losses and loss expenses related to:
Current year	1,887,715			1,818,672
Prior years	(224,131		)	(165,804		)
	1,663,584			1,652,868
Net paid losses and loss expenses related to:
Current year	(233,124		)	(185,953		)
Prior years	(1,334,772		)	(1,293,776		)
	(1,567,896		)	(1,479,729		)
Foreign exchange and other	(112,649		)	(183,360		)
Net reserve for unpaid losses and loss expenses, end of period	7,598,015			7,696,296
Reinsurance recoverable on unpaid losses, end of period	2,276,792			2,007,287
Gross reserve for losses and loss expenses, end of period	$	9,874,807		$	9,703,583

NET PRIOR YEAR RESERVE DEVELOPMENT BY SEGMENT

Prior year reserve development arises from changes to loss and loss expense estimates recognized in the current year but relating to losses incurred in previous calendar years. Such development is summarized by segment in the following table:

	Three months ended September 30,				Nine months ended September 30,
	2016		2015		2016		2015
Insurance	$	20,688	$	2,444	$	43,181	$	21,225
Reinsurance	55,331		42,681		180,950		144,579
Total	$	76,019	$	45,125	$	224,131	$	165,804

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SHARE-BASED COMPENSATION (TABLES)

9 Months Ended

Sep. 30, 2016

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

RECONCILIATIONS OF BEGINNING AND ENDING BALANCE OF NONVESTED RESTRICTED STOCK (INCLUDING RSUS) TO BE SETTLED IN SHARES AND CASH

Awards to settle in shares

The following table provides a reconciliation of the beginning and ending balance of nonvested restricted stock (including restricted stock units) for the nine months endedSeptember 30,2016:

	Performance-based Stock Awards				Service-based Stock Awards
	Number of Restricted Stock		Weighted Average Grant Date Fair Value		Number of Restricted Stock		Weighted  Average Grant Date Fair Value(1)
Nonvested restricted stock - beginning of period	201		$	49.24	1,954		$	43.34
Granted	104		53.80		586		53.81
Vested	(48	)	45.38		(779	)	39.26
Forfeited	—		—		(94	)	47.03
Nonvested restricted stock - end of period	257		$	52.04	1,667		$	48.77

(1) Fair value is based on the closing price of our common shares on the New York Stock Exchange on the day of the grant.

Cash-settled awards

The following table provides a reconciliation of the beginning and ending balance of nonvested cash settled restricted stock units for the nine months endedSeptember 30,2016:

	Performance-based Cash Settled RSUs		Service-based Cash Settled RSUs
	Number of Restricted Stock Units		Number of Restricted Stock Units
Nonvested restricted stock units - beginning of period	70		1,433
Granted	18		494
Vested	(32	)	(371	)
Forfeited	—		(94	)
Nonvested restricted stock units - end of period	56		1,462

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EARNINGS PER COMMON SHARE (TABLES)

9 Months Ended

Sep. 30, 2016

Earnings Per Share [Abstract]

BASIC AND DILUTED EARNINGS PER COMMON SHARE

The following table sets forth the comparison of basic and diluted earnings per common share:

	Three months ended September 30,				Nine months ended September 30,
	2016		2015		2016		2015
Basic earnings per common share
Net income	$	186,613	$	257,642	$	364,460	$	496,838
Less: preferred share dividends	9,969		10,022		29,906		30,066
Net income available to common shareholders	176,644		247,620		334,554		466,772
Weighted average common shares outstanding - basic(1)	89,621		98,226		91,852		99,464
Basic earnings per common share	$	1.97	$	2.52	$	3.64	$	4.69
Diluted earnings per common share
Net income available to common shareholders	$	176,644	$	247,620	$	334,554	$	466,772
Weighted average common shares outstanding - basic(1)	89,621		98,226		91,852		99,464
Share based compensation plans	730		898		727		1,004
Weighted average common shares outstanding - diluted(1)	90,351		99,124		92,579		100,468
Diluted earnings per common share	$	1.96	$	2.50	$	3.61	$	4.65
Anti-dilutive shares excluded from the dilutive computation	—		—		226		219

(1) On August 17, 2015, the Company entered into an Accelerated Share Repurchase (“ASR”) agreement (see 'Note 9 - Shareholders' Equity' for additional detail). The weighted-average number of shares outstanding used in the computation of basic and diluted earnings per share reflects the Company’s receipt of 4,149,378 common shares delivered to the Company on August 20, 2015, and 1,358,380 common shares delivered to the company on January 15, 2016 under the Company's ASR agreement.

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SHAREHOLDERS' EQUITY (TABLES)

9 Months Ended

Sep. 30, 2016

Stockholders' Equity Note [Abstract]

COMMON SHARES ISSUED AND OUTSTANDING

The following table presents our common shares issued and outstanding:

	Three months ended September 30,				Nine months ended September 30,
	2016		2015		2016		2015
Shares issued, balance at beginning of period	176,575		176,206		176,240		175,478
Shares issued	—		16		335		744
Total shares issued at end of period	176,575		176,222		176,575		176,222
Treasury shares, balance at beginning of period	(85,921	)	(75,922	)	(80,174	)	(76,052	)
Shares repurchased	(2,252	)	(4,257	)	(8,499	)	(4,607	)
Shares reissued from treasury	37		6		537		486
Total treasury shares at end of period	(88,136	)	(80,173	)	(88,136	)	(80,173	)
Total shares outstanding	88,439		96,049		88,439		96,049

SHARE REPURCHASES

The following table presents our share repurchases:

	Three months ended September 30,				Nine months ended September 30,
	2016		2015		2016		2015
In the open market:
Total shares(1)	2,232		4,248		8,236		4,264
Total cost	$	124,948	$	245,658	$	434,948	$	246,490
Average price per share(2)	$	56.00	$	57.83	$	52.81	$	57.80
From employees:
Total shares	20		9		263		343
Total cost	$	1,088	$	489	$	14,137	$	17,586
Average price per share(2)	$	54.13	$	55.59	$	53.68	$	51.28
Total shares repurchased:
Total shares	2,252		4,257		8,499		4,607
Total cost	$	126,036	$	246,147	$	449,085	$	264,076
Average price per share(2)	$	55.98	$	57.83	$	52.84	$	57.32

(1) The nine months ended September 30, 2016 includes 1,358,380 common shares acquired under the accelerated share repurchase program (see below for more detail).

(2) Calculated using whole figures.

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OTHER COMPREHENSIVE INCOME (TABLES)

9 Months Ended

Sep. 30, 2016

Equity [Abstract]

TAX EFFECTS ALLOCATED TO EACH COMPONENT OF OTHER COMPREHENSIVE INCOME

The tax effects allocated to each component of other comprehensive income were as follows:

	2016									2015
	Before Tax Amount			Tax (Expense) Benefit			Net of Tax Amount			Before Tax Amount			Tax (Expense) Benefit			Net of Tax Amount
Three months ended September 30,
Available for sale investments:
Unrealized investment gains (losses) arising during the period	$	40,125		$	(3,789	)	$	36,336		$	(102,810	)	$	3,099		$	(99,711	)
Adjustment for reclassification of net realized investment gains (losses) and OTTI losses recognized in net income	(5,050		)	2,408			(2,642		)	76,368			(1,558		)	74,810
Unrealized investment gains (losses) arising during the period, net of reclassification adjustment	35,075			(1,381		)	33,694			(26,442		)	1,541			(24,901		)
Non-credit portion of OTTI losses	—			—			—			—			—			—
Foreign currency translation adjustment	1,722			—			1,722			(14,626		)	—			(14,626		)
Total other comprehensive income (loss), net of tax	$	36,797		$	(1,381	)	$	35,416		$	(41,068	)	$	1,541		$	(39,527	)
Nine months ended September 30,
Available for sale investments:
Unrealized investment gains (losses) arising during the period	$	263,235		$	(24,579	)	$	238,656		$	(183,822	)	$	6,884		$	(176,938	)
Adjustment for reclassification of net realized investment gains and OTTI losses recognized in net income	40,338			2,282			42,620			130,858			(2,088		)	128,770
Unrealized investment gains (losses) arising during the period, net of reclassification adjustment	303,573			(22,297		)	281,276			(52,964		)	4,796			(48,168		)
Non-credit portion of OTTI losses	—			—			—			—			—			—
Foreign currency translation adjustment	5,694			—			5,694			(23,851		)	—			(23,851		)
Total other comprehensive income (loss), net of tax	$	309,267		$	(22,297	)	$	286,970		$	(76,815	)	$	4,796		$	(72,019	)

RECLASSIFICATIONS OUT OF AOCI INTO NET INCOME AVAILABLE TO COMMON SHAREHOLDERS

Reclassifications out of AOCI into net income available to common shareholders were as follows:

		Amount Reclassified from AOCI(1)
Details About AOCI Components	Consolidated Statement of Operations Line Item That Includes Reclassification	Three months ended September 30,						Nine months ended September 30,
		2016			2015			2016			2015
Unrealized investment gains (losses) on available for sale investments
	Other realized investment gains (losses)	$	9,297		$	(44,067	)	$	(19,992	)	$	(68,096	)
	OTTI losses	(4,247		)	(32,301		)	(20,346		)	(62,762		)
	Total before tax	5,050			(76,368		)	(40,338		)	(130,858		)
	Income tax (expense) benefit	(2,408		)	1,558			(2,282		)	2,088
	Net of tax	$	2,642		$	(74,810	)	$	(42,620	)	$	(128,770	)

(1) Amounts in parentheses are debits to net income available to common shareholders.

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SEGMENT INFORMATION (DETAILS) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016 USD ($)	Sep. 30, 2015 USD ($)	Sep. 30, 2016 USD ($) reportable_segment	Sep. 30, 2015 USD ($)	Dec. 31, 2015 USD ($)
Segment Information [Line Items]
Number of reportable segments | reportable_segment			2
Net premiums earned	$ 934,415	$ 919,341	$ 2,783,746	$ 2,764,605
Other insurance related income (loss)	5,944	1,158	4,850	12,319
Net losses and loss expenses	(532,328)	(560,387)	(1,663,584)	(1,652,868)
Acquisition costs	(189,810)	(182,744)	(559,570)	(537,549)
Expenses	(142,906)	(144,727)	(439,554)	(456,451)
Net investment income	116,923	45,685	257,818	226,336
Net realized investment gains (losses)	5,205	(69,957)	(40,295)	(123,618)
Foreign exchange gains	13,795	28,088	69,781	69,200
Interest expense and financing costs	(12,839)	(12,918)	(38,586)	(38,114)
Termination fee received	0	280,000	0	280,000
Reorganization and related expenses	0	(45,867)	0	(45,867)
Income before income taxes and interest in income (loss) of equity method investments	$ 198,399	$ 257,672	$ 374,606	$ 497,993
Net loss and loss expense ratio	57.00%	61.00%	59.80%	59.80%
Acquisition cost ratio	20.30%	19.90%	20.10%	19.40%
General and administrative expense ratio	15.30%	15.70%	15.80%	16.50%
Combined ratio	92.60%	96.60%	95.70%	95.70%
Goodwill and intangible assets	$ 85,501	$ 87,329	$ 85,501	$ 87,329	$ 86,858
Operating Segments [Member]
Segment Information [Line Items]
Gross premiums written	959,962	936,583	4,239,558	3,803,928
Net premiums written	595,431	677,217	3,288,587	3,079,307
Net premiums earned	934,415	919,341	2,783,746	2,764,605
Other insurance related income (loss)	5,944	1,158	4,850	12,319
Net losses and loss expenses	(532,328)	(560,387)	(1,663,584)	(1,652,868)
Acquisition costs	(189,810)	(182,744)	(559,570)	(537,549)
Expenses	(114,223)	(121,123)	(352,632)	(372,625)
Underwriting income	103,998	56,245	212,810	213,882
Operating Segments [Member] | Insurance [Member]
Segment Information [Line Items]
Gross premiums written	675,430	606,704	2,112,796	1,970,554
Net premiums written	433,131	381,118	1,433,058	1,352,122
Net premiums earned	444,691	444,550	1,322,649	1,344,339
Other insurance related income (loss)			(57)
Other insurance related income (loss)	39	542		811
Net losses and loss expenses	(273,226)	(283,272)	(853,771)	(866,580)
Acquisition costs	(61,755)	(69,118)	(184,982)	(200,493)
Expenses	(84,588)	(85,814)	(252,652)	(261,924)
Underwriting income	$ 25,161	$ 6,888	$ 31,187	$ 16,153
Net loss and loss expense ratio	61.40%	63.70%	64.60%	64.50%
Acquisition cost ratio	13.90%	15.50%	14.00%	14.90%
General and administrative expense ratio	19.10%	19.40%	19.00%	19.50%
Combined ratio	94.40%	98.60%	97.60%	98.90%
Goodwill and intangible assets	$ 85,501	$ 87,329	$ 85,501	$ 87,329
Operating Segments [Member] | Reinsurance [Member]
Segment Information [Line Items]
Gross premiums written	284,532	329,879	2,126,762	1,833,374
Net premiums written	162,300	296,099	1,855,529	1,727,185
Net premiums earned	489,724	474,791	1,461,097	1,420,266
Other insurance related income (loss)	5,905	616	4,907	11,508
Net losses and loss expenses	(259,102)	(277,115)	(809,813)	(786,288)
Acquisition costs	(128,055)	(113,626)	(374,588)	(337,056)
Expenses	(29,635)	(35,309)	(99,980)	(110,701)
Underwriting income	$ 78,837	$ 49,357	$ 181,623	$ 197,729
Net loss and loss expense ratio	52.90%	58.40%	55.40%	55.40%
Acquisition cost ratio	26.10%	23.90%	25.60%	23.70%
General and administrative expense ratio	6.10%	7.40%	6.90%	7.80%
Combined ratio	85.10%	89.70%	87.90%	86.90%
Goodwill and intangible assets	$ 0	$ 0	$ 0	$ 0
Corporate, Non-Segment [Member]
Segment Information [Line Items]
Expenses	(28,683)	(23,604)	(86,922)	(83,826)
Significant Reconciling Items [Member]
Segment Information [Line Items]
Net investment income	116,923	45,685	257,818	226,336
Net realized investment gains (losses)	5,205	(69,957)	(40,295)	(123,618)
Foreign exchange gains	13,795	28,088	69,781	69,200
Interest expense and financing costs	(12,839)	(12,918)	(38,586)	(38,114)
Termination fee received	0	280,000	0	280,000
Reorganization and related expenses	$ 0	$ (45,867)	$ 0	$ (45,867)

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INVESTMENTS (DETAILS) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	$ 11,462,399	$ 11,897,639
Gross Unrealized Gains (fixed maturities)	192,418	52,518
Gross Unrealized Losses (fixed maturities)	(87,957)	(230,408)
Fair Value (fixed maturities)	11,566,860	11,719,749
Non-credit OTTI in AOCI	(870)	(875)
Cost	600,604	575,776
Gross Unrealized Gains (equities)	45,148	31,211
Gross Unrealized Losses (equities)	(1,408)	(8,989)
Fair Value (equities)	644,344	597,998
US Government and Agency [Member]
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	1,542,943	1,673,617
Gross Unrealized Gains (fixed maturities)	22,349	1,545
Gross Unrealized Losses (fixed maturities)	(2,415)	(23,213)
Fair Value (fixed maturities)	1,562,877	1,651,949
Non-credit OTTI in AOCI	0	0
Non-US Government [Member]
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	620,601	809,025
Gross Unrealized Gains (fixed maturities)	4,799	2,312
Gross Unrealized Losses (fixed maturities)	(43,344)	(72,332)
Fair Value (fixed maturities)	582,056	739,005
Non-credit OTTI in AOCI	0	0
Corporate Debt [Member]
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	4,516,290	4,442,315
Gross Unrealized Gains (fixed maturities)	87,184	16,740
Gross Unrealized Losses (fixed maturities)	(34,974)	(96,286)
Fair Value (fixed maturities)	4,568,500	4,362,769
Non-credit OTTI in AOCI	0	0
Agency RMBS [Member]
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	2,473,832	2,236,138
Gross Unrealized Gains (fixed maturities)	49,661	22,773
Gross Unrealized Losses (fixed maturities)	(762)	(9,675)
Fair Value (fixed maturities)	2,522,731	2,249,236
Non-credit OTTI in AOCI	0	0
CMBS [Member]
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	877,732	1,088,595
Gross Unrealized Gains (fixed maturities)	18,546	3,885
Gross Unrealized Losses (fixed maturities)	(2,003)	(9,182)
Fair Value (fixed maturities)	894,275	1,083,298
Non-credit OTTI in AOCI	0	0
Non-Agency RMBS [Member]
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	71,842	99,989
Gross Unrealized Gains (fixed maturities)	1,636	1,992
Gross Unrealized Losses (fixed maturities)	(1,648)	(973)
Fair Value (fixed maturities)	71,830	101,008
Non-credit OTTI in AOCI	(870)	(875)
ABS [Member]
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	1,234,292	1,387,919
Gross Unrealized Gains (fixed maturities)	4,028	952
Gross Unrealized Losses (fixed maturities)	(2,724)	(17,601)
Fair Value (fixed maturities)	1,235,596	1,371,270
Non-credit OTTI in AOCI	0	0
Municipals [Member]
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	124,867	160,041
Gross Unrealized Gains (fixed maturities)	4,215	2,319
Gross Unrealized Losses (fixed maturities)	(87)	(1,146)
Fair Value (fixed maturities)	128,995	161,214
Non-credit OTTI in AOCI	0	0
Common Stock [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost	379	0
Gross Unrealized Gains (equities)	38	0
Gross Unrealized Losses (equities)	(348)	0
Fair Value (equities)	69	0
Exchange-Traded Funds [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost	463,655	447,524
Gross Unrealized Gains (equities)	41,611	31,211
Gross Unrealized Losses (equities)	(1,060)	(4,762)
Fair Value (equities)	504,206	473,973
Bond Mutual Funds [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost	136,570	128,252
Gross Unrealized Gains (equities)	3,499	0
Gross Unrealized Losses (equities)	0	(4,227)
Fair Value (equities)	$ 140,069	$ 124,025

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INVESTMENTS (DETAILS 2) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Schedule Of Available For Sale Securities [Line Items]
Due in one year or less (amortized cost)	$ 363,821	$ 291,368
Due after one year through five years (amortized cost)	3,809,515	4,217,515
Due after five years through ten years (amortized cost)	2,286,970	2,263,684
Due after ten years (amortized cost)	344,395	312,431
Total fixed maturities with a single maturity date (amortized cost)	6,804,701	7,084,998
Total (amortized cost)	11,462,399	11,897,639
Due in one year or less (fair value)	356,706	289,571
Due after one year through five years (fair value)	3,801,104	4,142,802
Due after five years through ten years (fair value)	2,330,895	2,181,525
Due after ten years (fair value)	353,723	301,039
Total fixed maturities with a single maturity date (fair value)	6,842,428	6,914,937
Fair Value (fixed maturities)	$ 11,566,860	$ 11,719,749
Due in one year or less (% of total fair value)	3.00%	2.50%
Due after one year through five years (% of total fair value)	32.90%	35.30%
Due after five years through ten years (% of total fair value)	20.20%	18.60%
Due after ten years (% of total fair value)	3.10%	2.60%
Fixed maturities with a single maturity date (% of total fair value)	59.20%	59.00%
Total	100.00%	100.00%
Agency RMBS [Member]
Schedule Of Available For Sale Securities [Line Items]
Fixed maturities without a single maturity date (amortized cost)	$ 2,473,832	$ 2,236,138
Total (amortized cost)	2,473,832	2,236,138
Fixed maturities without a single maturity date (fair value)	2,522,731	2,249,236
Fair Value (fixed maturities)	$ 2,522,731	$ 2,249,236
Fixed maturities without a single maturity date (% of total fair value)	21.80%	19.20%
CMBS [Member]
Schedule Of Available For Sale Securities [Line Items]
Fixed maturities without a single maturity date (amortized cost)	$ 877,732	$ 1,088,595
Total (amortized cost)	877,732	1,088,595
Fixed maturities without a single maturity date (fair value)	894,275	1,083,298
Fair Value (fixed maturities)	$ 894,275	$ 1,083,298
Fixed maturities without a single maturity date (% of total fair value)	7.70%	9.20%
Non-Agency RMBS [Member]
Schedule Of Available For Sale Securities [Line Items]
Fixed maturities without a single maturity date (amortized cost)	$ 71,842	$ 99,989
Total (amortized cost)	71,842	99,989
Fixed maturities without a single maturity date (fair value)	71,830	101,008
Fair Value (fixed maturities)	$ 71,830	$ 101,008
Fixed maturities without a single maturity date (% of total fair value)	0.60%	0.90%
ABS [Member]
Schedule Of Available For Sale Securities [Line Items]
Fixed maturities without a single maturity date (amortized cost)	$ 1,234,292	$ 1,387,919
Total (amortized cost)	1,234,292	1,387,919
Fixed maturities without a single maturity date (fair value)	1,235,596	1,371,270
Fair Value (fixed maturities)	$ 1,235,596	$ 1,371,270
Fixed maturities without a single maturity date (% of total fair value)	10.70%	11.70%

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INVESTMENTS (DETAILS 3) $ in Thousands	Sep. 30, 2016 USD ($) security	Dec. 31, 2015 USD ($) security
Fixed Maturities [Member]
Schedule Of Available For Sale Securities [Line Items]
Fair Value - 12 months or greater	$ 1,155,883	$ 1,317,794
Unrealized Losses - 12 months or greater	(57,291)	(106,770)
Fair Value - Less than 12 months	1,683,251	7,145,067
Unrealized Losses - Less than 12 months	(30,666)	(123,638)
Total Fair Value of Securities in Unrealized Loss Position	2,839,134	8,462,861
Total Unrealized Losses	$ (87,957)	$ (230,408)
Number of Available For Sale Securities In Unrealized Loss Positions | security	935	2,314
Number of Available For Sale Securities in Unrealized Loss Positions for 12 Months or Greater | security	399	383
Fixed Maturities [Member] | Below Investment Grade or Not Rated [Member]
Schedule Of Available For Sale Securities [Line Items]
Total Unrealized Losses	$ (13,000)	$ (39,000)
US Government and Agency [Member]
Schedule Of Available For Sale Securities [Line Items]
Fair Value - 12 months or greater	55,000	84,179
Unrealized Losses - 12 months or greater	(1,635)	(7,622)
Fair Value - Less than 12 months	422,681	1,474,202
Unrealized Losses - Less than 12 months	(780)	(15,591)
Total Fair Value of Securities in Unrealized Loss Position	477,681	1,558,381
Total Unrealized Losses	(2,415)	(23,213)
Non-US Government [Member]
Schedule Of Available For Sale Securities [Line Items]
Fair Value - 12 months or greater	104,441	170,269
Unrealized Losses - 12 months or greater	(24,061)	(50,841)
Fair Value - Less than 12 months	254,694	317,693
Unrealized Losses - Less than 12 months	(19,283)	(21,491)
Total Fair Value of Securities in Unrealized Loss Position	359,135	487,962
Total Unrealized Losses	(43,344)	(72,332)
Corporate Debt [Member]
Schedule Of Available For Sale Securities [Line Items]
Fair Value - 12 months or greater	285,848	340,831
Unrealized Losses - 12 months or greater	(26,202)	(33,441)
Fair Value - Less than 12 months	639,722	2,845,375
Unrealized Losses - Less than 12 months	(8,772)	(62,845)
Total Fair Value of Securities in Unrealized Loss Position	925,570	3,186,206
Total Unrealized Losses	(34,974)	(96,286)
Agency RMBS [Member]
Schedule Of Available For Sale Securities [Line Items]
Fair Value - 12 months or greater	80,375	64,792
Unrealized Losses - 12 months or greater	(556)	(1,609)
Fair Value - Less than 12 months	121,203	1,073,566
Unrealized Losses - Less than 12 months	(206)	(8,066)
Total Fair Value of Securities in Unrealized Loss Position	201,578	1,138,358
Total Unrealized Losses	(762)	(9,675)
CMBS [Member]
Schedule Of Available For Sale Securities [Line Items]
Fair Value - 12 months or greater	99,004	75,627
Unrealized Losses - 12 months or greater	(1,260)	(1,579)
Fair Value - Less than 12 months	173,795	659,480
Unrealized Losses - Less than 12 months	(743)	(7,603)
Total Fair Value of Securities in Unrealized Loss Position	272,799	735,107
Total Unrealized Losses	(2,003)	(9,182)
Non-Agency RMBS [Member]
Schedule Of Available For Sale Securities [Line Items]
Fair Value - 12 months or greater	10,184	5,283
Unrealized Losses - 12 months or greater	(1,306)	(210)
Fair Value - Less than 12 months	5,187	43,199
Unrealized Losses - Less than 12 months	(342)	(763)
Total Fair Value of Securities in Unrealized Loss Position	15,371	48,482
Total Unrealized Losses	(1,648)	(973)
ABS [Member]
Schedule Of Available For Sale Securities [Line Items]
Fair Value - 12 months or greater	518,647	562,599
Unrealized Losses - 12 months or greater	(2,253)	(11,158)
Fair Value - Less than 12 months	50,402	667,448
Unrealized Losses - Less than 12 months	(471)	(6,443)
Total Fair Value of Securities in Unrealized Loss Position	569,049	1,230,047
Total Unrealized Losses	(2,724)	(17,601)
Municipals [Member]
Schedule Of Available For Sale Securities [Line Items]
Fair Value - 12 months or greater	2,384	14,214
Unrealized Losses - 12 months or greater	(18)	(310)
Fair Value - Less than 12 months	15,567	64,104
Unrealized Losses - Less than 12 months	(69)	(836)
Total Fair Value of Securities in Unrealized Loss Position	17,951	78,318
Total Unrealized Losses	(87)	(1,146)
Equity Securities [Member]
Schedule Of Available For Sale Securities [Line Items]
Fair Value - 12 months or greater	6,153	2,331
Unrealized Losses - 12 months or greater	(425)	(313)
Fair Value - Less than 12 months	39,128	234,997
Unrealized Losses - Less than 12 months	(983)	(8,676)
Total Fair Value of Securities in Unrealized Loss Position	45,281	237,328
Total Unrealized Losses	$ (1,408)	$ (8,989)
Number of Available For Sale Securities In Unrealized Loss Positions | security	20	35
Number of Available For Sale Securities in Unrealized Loss Positions for 12 Months or Greater | security	5	1
Common Stock [Member]
Schedule Of Available For Sale Securities [Line Items]
Fair Value - 12 months or greater	$ 0	$ 0
Unrealized Losses - 12 months or greater	0	0
Fair Value - Less than 12 months	31	0
Unrealized Losses - Less than 12 months	(348)	0
Total Fair Value of Securities in Unrealized Loss Position	31	0
Total Unrealized Losses	(348)	0
Exchange-Traded Funds [Member]
Schedule Of Available For Sale Securities [Line Items]
Fair Value - 12 months or greater	6,153	2,331
Unrealized Losses - 12 months or greater	(425)	(313)
Fair Value - Less than 12 months	39,097	110,972
Unrealized Losses - Less than 12 months	(635)	(4,449)
Total Fair Value of Securities in Unrealized Loss Position	45,250	113,303
Total Unrealized Losses	(1,060)	(4,762)
Bond Mutual Funds [Member]
Schedule Of Available For Sale Securities [Line Items]
Fair Value - 12 months or greater	0	0
Unrealized Losses - 12 months or greater	0	0
Fair Value - Less than 12 months	0	124,025
Unrealized Losses - Less than 12 months	0	(4,227)
Total Fair Value of Securities in Unrealized Loss Position	0	124,025
Total Unrealized Losses	$ 0	$ (4,227)

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INVESTMENTS (DETAILS 4) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2016	Dec. 31, 2015
Mortgage Loans held-for-investment, net [Abstract]
Commercial	$ 332,753	$ 206,277
Commercial, Percent	100.00%	100.00%
Valuation allowances	$ 0	$ 0
Valuation allowance, Percent	0.00%	0.00%
Total Mortgage Loans held-for-investment	$ 332,753	$ 206,277
Total Mortgage Loans held-for investment, Percent	100.00%	100.00%
Debt Service Coverage Ratio	1.1
Loan-to-Value Ratio, Percent (less than)	70.00%
Credit losses on commercial mortgage loans	$ 0

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INVESTMENTS (DETAILS 5) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2016	Dec. 31, 2015	Mar. 01, 2016
Other Investments [Line Items]
Other investments, at fair value	$ 847,262	$ 816,756
Percentage of total fair value	100.00%	100.00%
Hedge Funds [Member] | Lockup Redemption Restriction [Member]
Other Investments [Line Items]
Fair value of other investments subject to redemption restrictions	$ 87,000	$ 66,000
Percentage of fair value of other investments subject to redemption restrictions	17.00%	10.00%
Long/short equity funds [Member]
Other Investments [Line Items]
Other investments, at fair value	$ 139,460	$ 154,348
Percentage of total fair value	16.00%	19.00%
Redemption frequency	Quarterly, Semi-annually, Annually	Quarterly, Semi-annually, Annually
Long/short equity funds [Member] | Minimum [Member]
Other Investments [Line Items]
Redemption notice period	45 days	45 days
Long/short equity funds [Member] | Maximum [Member]
Other Investments [Line Items]
Redemption notice period	60 days	60 days
Multi-strategy funds [Member]
Other Investments [Line Items]
Other investments, at fair value	$ 281,153	$ 355,073
Percentage of total fair value	33.00%	43.00%
Redemption frequency	Quarterly, Semi-annually	Quarterly, Semi-annually
Multi-strategy funds [Member] | Other Redemption Restriction [Member]
Other Investments [Line Items]
Unfunded commitments related to other investments	$ 12,000	$ 12,000
Optional extension of investment term	3 years
Multi-strategy funds [Member] | Minimum [Member]
Other Investments [Line Items]
Redemption notice period	60 days	60 days
Multi-strategy funds [Member] | Maximum [Member]
Other Investments [Line Items]
Redemption notice period	95 days	95 days
Event driven funds [Member]
Other Investments [Line Items]
Other investments, at fair value	$ 94,012	$ 147,287
Percentage of total fair value	11.00%	18.00%
Redemption frequency	Quarterly, Annually	Quarterly, Annually
Event driven funds [Member] | Minimum [Member]
Other Investments [Line Items]
Redemption notice period	45 days	45 days
Event driven funds [Member] | Maximum [Member]
Other Investments [Line Items]
Redemption notice period	60 days	60 days
Leveraged bank loan funds [Member]
Other Investments [Line Items]
Other investments, at fair value	$ 0	$ 65
Percentage of total fair value	0.00%	0.00%
Direct Lending Funds [Member]
Other Investments [Line Items]
Other investments, at fair value	$ 125,002	$ 90,120
Percentage of total fair value	15.00%	11.00%
Direct Lending Funds [Member] | Other Redemption Restriction [Member]
Other Investments [Line Items]
Unfunded commitments related to other investments	$ 189,000	$ 222,000
Optional extension of investment term	3 years
Direct Lending Funds [Member] | Minimum [Member] | Other Redemption Restriction [Member]
Other Investments [Line Items]
Investment term	5 years
Direct Lending Funds [Member] | Maximum [Member] | Other Redemption Restriction [Member]
Other Investments [Line Items]
Investment term	10 years
Private Equity Funds [Member]
Other Investments [Line Items]
Other investments, at fair value	$ 89,170	$ 0
Percentage of total fair value	11.00%	0.00%
Unfunded commitments related to other investments	$ 40,000		$ 135,000
Investment term	10 years
Real Estate Funds [Member]
Other Investments [Line Items]
Other investments, at fair value	$ 11,782	$ 4,929
Percentage of total fair value	1.00%	1.00%
Real Estate Funds [Member] | Other Redemption Restriction [Member]
Other Investments [Line Items]
Unfunded commitments related to other investments	$ 90,000	$ 95,000
Investment term	8 years
Commitment period	3 years
CLO-Equities [Member]
Other Investments [Line Items]
Other investments, at fair value	$ 63,783	$ 64,934
Percentage of total fair value	8.00%	8.00%
Other Privately Held Investments [Member]
Other Investments [Line Items]
Other investments, at fair value	$ 42,900	$ 0
Percentage of total fair value	5.00%	0.00%
Bank Revolver Opportunity Funds [Member]
Other Investments [Line Items]
Unfunded commitments related to other investments		$ 50,000
Investment term	7 years
Optional extension of investment term	2 years

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INVESTMENTS (DETAILS 6) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Schedule of Equity Method Investments [Line Items]
Payments to acquire equity method investments	$ 103,548	$ 0
Equity method investments	111,295		$ 10,932
Harrington Reinsurance Holdings Limited [Member]
Schedule of Equity Method Investments [Line Items]
Payments to acquire equity method investments	$ 104,000
Equity method investment, ownership percentage	18.00%
Equity method investment, difference between carrying amount and underlying equity	$ 5,000
Other Equity Method Investments [Member]
Schedule of Equity Method Investments [Line Items]
Equity method investments	$ 9,000

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INVESTMENTS (DETAILS 7) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Net Investment Income [Line Items]
Gross investment income	$ 125,004	$ 53,562	$ 281,498	$ 250,300
Investment expenses	(8,081)	(7,877)	(23,680)	(23,964)
Net investment income	116,923	45,685	257,818	226,336
Fixed Maturities [Member]
Net Investment Income [Line Items]
Gross investment income	75,827	75,980	229,423	220,066
Other Investments [Member]
Net Investment Income [Line Items]
Gross investment income	38,248	(27,421)	25,770	17,616
Equity Securities [Member]
Net Investment Income [Line Items]
Gross investment income	4,633	3,445	12,843	7,795
Mortgage loans [Member]
Net Investment Income [Line Items]
Gross investment income	2,191	482	5,683	776
Cash And Cash Equivalents [Member]
Net Investment Income [Line Items]
Gross investment income	3,768	993	7,071	3,770
Short-term Investments [Member]
Net Investment Income [Line Items]
Gross investment income	$ 337	$ 83	$ 708	$ 277

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INVESTMENTS (DETAILS 8) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Schedule Of Available For Sale Securities [Line Items]
Gross realized gains	$ 31,781	$ 12,358	$ 86,637	$ 45,300
Gross realized losses	(22,484)	(56,426)	(106,625)	(113,384)
Net OTTI recognized in earnings	(4,247)	(32,301)	(20,346)	(62,762)
Change in fair value of investment derivatives	155	6,412	39	7,228
Total net realized investment gains (losses)	5,205	(69,957)	(40,295)	(123,618)
Fixed Maturities And Short-Term Investments [Member]
Schedule Of Available For Sale Securities [Line Items]
Gross realized gains	26,211	12,126	67,833	44,853
Gross realized losses	(21,908)	(54,867)	(90,702)	(111,432)
Equity Securities [Member]
Schedule Of Available For Sale Securities [Line Items]
Gross realized gains	5,570	232	18,804	447
Gross realized losses	$ (576)	$ (1,559)	$ (15,923)	$ (1,952)

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INVESTMENTS (DETAILS 9) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Other Than Temporary Impairment Losses Investments Portion Recognized In Earnings Net [Line Items]
Total OTTI recognized in earnings	$ 4,247	$ 32,301	$ 20,346	$ 62,762
Fixed Maturities [Member]
Other Than Temporary Impairment Losses Investments Portion Recognized In Earnings Net [Line Items]
Total OTTI recognized in earnings	4,247	21,966	17,786	41,241
Non-US Government [Member]
Other Than Temporary Impairment Losses Investments Portion Recognized In Earnings Net [Line Items]
Total OTTI recognized in earnings	2,456	1,295	2,953	2,717
Corporate Debt [Member]
Other Than Temporary Impairment Losses Investments Portion Recognized In Earnings Net [Line Items]
Total OTTI recognized in earnings	1,791	20,587	14,833	38,396
Non-Agency RMBS [Member]
Other Than Temporary Impairment Losses Investments Portion Recognized In Earnings Net [Line Items]
Total OTTI recognized in earnings	0	0	0	4
ABS [Member]
Other Than Temporary Impairment Losses Investments Portion Recognized In Earnings Net [Line Items]
Total OTTI recognized in earnings	0	84	0	124
Equity Securities [Member]
Other Than Temporary Impairment Losses Investments Portion Recognized In Earnings Net [Line Items]
Total OTTI recognized in earnings	0	10,335	2,560	21,521
Exchange-Traded Funds [Member]
Other Than Temporary Impairment Losses Investments Portion Recognized In Earnings Net [Line Items]
Total OTTI recognized in earnings	0	10,335	2,560	10,335
Bond Mutual Funds [Member]
Other Than Temporary Impairment Losses Investments Portion Recognized In Earnings Net [Line Items]
Total OTTI recognized in earnings	$ 0	$ 0	$ 0	$ 11,186

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INVESTMENTS (DETAILS 10) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Credit Losses For Which a Portion of OTTI Was Recognized in AOCI [Roll Forward]
Balance at beginning of period	$ 1,513	$ 1,564	$ 1,506	$ 1,531
Credit impairments recognized on securities not previously impaired	0	0	0	0
Additional credit impairments recognized on securities previously impaired	0	0	7	33
Change in timing of future cash flows on securities previously impaired	0	0	0	0
Intent to sell of securities previously impaired	0	0	0	0
Securities sold/redeemed/matured	(33)	(43)	(33)	(43)
Balance at end of period	$ 1,480	$ 1,521	$ 1,480	$ 1,521

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INVESTMENTS (DETAILS 11) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Investments, Debt and Equity Securities [Abstract]
Value of reverse repurchase agreements	$ 160	$ 30
Minimum required collateral for reverse repurchase agreements, expressed as a percentage of loan principal	102.00%

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FAIR VALUE MEASUREMENTS (DETAILS) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities	$ 11,566,860	$ 11,719,749
Equity securities	644,344	597,998
Other investments	847,262	816,756
Short-term investments	39,877	34,406
Derivative instruments	6,957	6,467
Derivative instruments	12,595	18,629
Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities	11,566,860	11,719,749
Equity securities	644,344	597,998
Other investments	847,262	816,756
Short-term investments	39,877	34,406
Derivative instruments	6,957	6,467
Insurance-linked securities	25,283	24,925
Total Assets	13,130,583	13,200,301
Derivative instruments	12,595	18,629
Cash settled awards	34,288	33,215
Total Liabilities	46,883	51,844
US Government and Agency [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities	1,562,877	1,651,949
US Government and Agency [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities	1,562,877	1,651,949
Non-US Government [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities	582,056	739,005
Non-US Government [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities	582,056	739,005
Corporate Debt [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities	4,568,500	4,362,769
Corporate Debt [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities	4,568,500	4,362,769
Agency RMBS [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities	2,522,731	2,249,236
Agency RMBS [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities	2,522,731	2,249,236
CMBS [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities	894,275	1,083,298
CMBS [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities	894,275	1,083,298
Non-Agency RMBS [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities	71,830	101,008
Non-Agency RMBS [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities	71,830	101,008
ABS [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities	1,235,596	1,371,270
ABS [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities	1,235,596	1,371,270
Municipals [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities	128,995	161,214
Municipals [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities	128,995	161,214
Common Stock [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Equity securities	69	0
Common Stock [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Equity securities	69	0
Exchange-Traded Funds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Equity securities	504,206	473,973
Exchange-Traded Funds [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Equity securities	504,206	473,973
Bond Mutual Funds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Equity securities	140,069	124,025
Bond Mutual Funds [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Equity securities	140,069	124,025
Hedge Funds [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Other investments	514,625	656,773
Direct Lending Funds [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Other investments	125,002	90,120
Private Equity Funds [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Other investments	89,170	0
Real Estate Funds [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Other investments	11,782	4,929
Other Privately Held Investments [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Other investments	42,900	0
CLO-Equities [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Other investments	63,783	64,934
Fair value based on NAV practical expedient [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities	0	0
Equity securities	0	0
Other investments	740,579	789,499
Short-term investments	0	0
Derivative instruments	0	0
Insurance-linked securities	0	0
Total Assets	740,579	789,499
Derivative instruments	0	0
Cash settled awards	0	0
Total Liabilities	0	0
Fair value based on NAV practical expedient [Member] | US Government and Agency [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities	0	0
Fair value based on NAV practical expedient [Member] | Non-US Government [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities	0	0
Fair value based on NAV practical expedient [Member] | Corporate Debt [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities	0	0
Fair value based on NAV practical expedient [Member] | Agency RMBS [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities	0	0
Fair value based on NAV practical expedient [Member] | CMBS [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities	0	0
Fair value based on NAV practical expedient [Member] | Non-Agency RMBS [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities	0	0
Fair value based on NAV practical expedient [Member] | ABS [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities	0	0
Fair value based on NAV practical expedient [Member] | Municipals [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities	0	0
Fair value based on NAV practical expedient [Member] | Common Stock [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Equity securities	0	0
Fair value based on NAV practical expedient [Member] | Exchange-Traded Funds [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Equity securities	0	0
Fair value based on NAV practical expedient [Member] | Bond Mutual Funds [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Equity securities	0	0
Fair value based on NAV practical expedient [Member] | Hedge Funds [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Other investments	514,625	656,773
Fair value based on NAV practical expedient [Member] | Direct Lending Funds [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Other investments	125,002	90,120
Fair value based on NAV practical expedient [Member] | Private Equity Funds [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Other investments	89,170	0
Fair value based on NAV practical expedient [Member] | Real Estate Funds [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Other investments	11,782	4,929
Fair value based on NAV practical expedient [Member] | Other Privately Held Investments [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Other investments	0	0
Fair value based on NAV practical expedient [Member] | CLO-Equities [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Other investments	0	37,677
Level 1 [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities	1,522,246	1,632,355
Equity securities	504,275	473,973
Other investments	0	0
Short-term investments	0	0
Derivative instruments	0	0
Insurance-linked securities	0	0
Total Assets	2,026,521	2,106,328
Derivative instruments	0	0
Cash settled awards	0	0
Total Liabilities	0	0
Level 1 [Member] | US Government and Agency [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities	1,522,246	1,632,355
Level 1 [Member] | Non-US Government [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities	0	0
Level 1 [Member] | Corporate Debt [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities	0	0
Level 1 [Member] | Agency RMBS [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities	0	0
Level 1 [Member] | CMBS [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities	0	0
Level 1 [Member] | Non-Agency RMBS [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities	0	0
Level 1 [Member] | ABS [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities	0	0
Level 1 [Member] | Municipals [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities	0	0
Level 1 [Member] | Common Stock [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Equity securities	69	0
Level 1 [Member] | Exchange-Traded Funds [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Equity securities	504,206	473,973
Level 1 [Member] | Bond Mutual Funds [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Equity securities	0	0
Level 1 [Member] | Hedge Funds [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Other investments	0	0
Level 1 [Member] | Direct Lending Funds [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Other investments	0	0
Level 1 [Member] | Private Equity Funds [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Other investments	0	0
Level 1 [Member] | Real Estate Funds [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Other investments	0	0
Level 1 [Member] | Other Privately Held Investments [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Other investments	0	0
Level 1 [Member] | CLO-Equities [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Other investments	0	0
Level 2 [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities	9,966,602	10,037,954
Equity securities	140,069	124,025
Other investments	0	0
Short-term investments	39,877	34,406
Derivative instruments	4,469	2,072
Insurance-linked securities	0	0
Total Assets	10,151,017	10,198,457
Derivative instruments	4,411	7,692
Cash settled awards	34,288	33,215
Total Liabilities	38,699	40,907
Level 2 [Member] | US Government and Agency [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities	40,631	19,594
Level 2 [Member] | Non-US Government [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities	582,056	739,005
Level 2 [Member] | Corporate Debt [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities	4,499,408	4,324,251
Level 2 [Member] | Agency RMBS [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities	2,522,731	2,249,236
Level 2 [Member] | CMBS [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities	885,355	1,072,376
Level 2 [Member] | Non-Agency RMBS [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities	71,830	101,008
Level 2 [Member] | ABS [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities	1,235,596	1,371,270
Level 2 [Member] | Municipals [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities	128,995	161,214
Level 2 [Member] | Common Stock [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Equity securities	0	0
Level 2 [Member] | Exchange-Traded Funds [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Equity securities	0	0
Level 2 [Member] | Bond Mutual Funds [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Equity securities	140,069	124,025
Level 2 [Member] | Hedge Funds [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Other investments	0	0
Level 2 [Member] | Direct Lending Funds [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Other investments	0	0
Level 2 [Member] | Private Equity Funds [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Other investments	0	0
Level 2 [Member] | Real Estate Funds [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Other investments	0	0
Level 2 [Member] | Other Privately Held Investments [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Other investments	0	0
Level 2 [Member] | CLO-Equities [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Other investments	0	0
Level 3 [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities	78,012	49,440
Equity securities	0	0
Other investments	106,683	27,257
Short-term investments	0	0
Derivative instruments	2,488	4,395
Insurance-linked securities	25,283	24,925
Total Assets	212,466	106,017
Derivative instruments	8,184	10,937
Cash settled awards	0	0
Total Liabilities	8,184	10,937
Level 3 [Member] | US Government and Agency [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities	0	0
Level 3 [Member] | Non-US Government [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities	0	0
Level 3 [Member] | Corporate Debt [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities	69,092	38,518
Level 3 [Member] | Agency RMBS [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities	0	0
Level 3 [Member] | CMBS [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities	8,920	10,922
Level 3 [Member] | Non-Agency RMBS [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities	0	0
Level 3 [Member] | ABS [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities	0	0
Level 3 [Member] | Municipals [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fixed maturities	0	0
Level 3 [Member] | Common Stock [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Equity securities	0	0
Level 3 [Member] | Exchange-Traded Funds [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Equity securities	0	0
Level 3 [Member] | Bond Mutual Funds [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Equity securities	0	0
Level 3 [Member] | Hedge Funds [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Other investments	0	0
Level 3 [Member] | Direct Lending Funds [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Other investments	0	0
Level 3 [Member] | Private Equity Funds [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Other investments	0	0
Level 3 [Member] | Real Estate Funds [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Other investments	0	0
Level 3 [Member] | Other Privately Held Investments [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Other investments	42,900	0
Level 3 [Member] | CLO-Equities [Member] | Fair Value Measurements Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Other investments	$ 63,783	$ 27,257

XML

FAIR VALUE MEASUREMENTS (DETAILS 2) $ in Thousands	9 Months Ended
	Sep. 30, 2016 USD ($) degree_day	Dec. 31, 2015 USD ($)
Fair Value Inputs Assets Quantitative Information [Line Items]
Other investments	$ 847,262	$ 816,756
Discounted cash flow [Member] | Level 3 [Member] | Other Investments - CLO-Equities [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Other investments	$ 35,594
Default rates	4.00%
Discounted cash flow [Member] | Level 3 [Member] | Other Privately Held Investments [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Other investments	$ 42,900
Liquidation Value Valuation Technique [Member] | Level 3 [Member] | Other Investments - CLO-Equities [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Other investments	$ 28,189
Fair value of collateral	100.00%
Simulation model [Member] | Level 3 [Member] | Weather Related Derivative [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Net derivative assets	$ (5,696)
Minimum [Member] | Discounted cash flow [Member] | Level 3 [Member] | Other Investments - CLO-Equities [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Loss severity rate	35.00%
Collateral spreads	3.60%
Estimated maturity dates	2 years
Minimum [Member] | Discounted cash flow [Member] | Level 3 [Member] | Other Privately Held Investments [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Discount rate	5.00%
Minimum [Member] | Liquidation Value Valuation Technique [Member] | Level 3 [Member] | Other Investments - CLO-Equities [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Discount margin	0.10%
Minimum [Member] | Simulation model [Member] | Level 3 [Member] | Weather Related Derivative [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Weather curve | degree_day	1
Weather standard deviation | degree_day	1
Maximum [Member] | Discounted cash flow [Member] | Level 3 [Member] | Other Investments - CLO-Equities [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Loss severity rate	53.50%
Collateral spreads	4.00%
Estimated maturity dates	6 years
Maximum [Member] | Discounted cash flow [Member] | Level 3 [Member] | Other Privately Held Investments [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Discount rate	8.00%
Maximum [Member] | Liquidation Value Valuation Technique [Member] | Level 3 [Member] | Other Investments - CLO-Equities [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Discount margin	19.10%
Maximum [Member] | Simulation model [Member] | Level 3 [Member] | Weather Related Derivative [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Weather curve | degree_day	2,294
Weather standard deviation | degree_day	1,029
Weighted Average [Member] | Discounted cash flow [Member] | Level 3 [Member] | Other Investments - CLO-Equities [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Default rates	4.00%
Loss severity rate	35.40%
Collateral spreads	4.00%
Estimated maturity dates	6 years
Weighted Average [Member] | Discounted cash flow [Member] | Level 3 [Member] | Other Privately Held Investments [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Discount rate	7.20%
Weighted Average [Member] | Liquidation Value Valuation Technique [Member] | Level 3 [Member] | Other Investments - CLO-Equities [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Fair value of collateral	100.00%
Discount margin	2.40%

XML

FAIR VALUE MEASUREMENTS (DETAILS 3) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Total Liabilities [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Opening Balance (Liabilities)	$ 1,978	$ 818	$ 10,937	$ 15,288
Transfers into Level 3 (Liabilities)	0	0	0	0
Transfers out of Level 3 (Liabilities)	0	0	0	0
Included in earnings (Liabilities)	(169)	(331)	2,445	(12,053)
Included in OCI (Liabilities)	0	0	0	0
Purchases (Liabilities)	6,384	6,475	7,189	8,698
Sales (Liabilities)	0	0	0	0
Settlements/ Distributions (Liabilities)	(9)	0	(12,387)	(4,971)
Closing Balance (Liabilities)	8,184	6,962	8,184	6,962
Change in unrealized investment gain/loss relating to assets held at the reporting date (Liabilities)	335	(331)	457	(318)
Fixed Maturities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Opening Balance (Assets)	72,232	65,018	49,440	73,631
Transfers into Level 3 (Assets)	0	0	20,412	5,072
Transfers out of Level 3 (Assets)	0	(9,902)	(1,955)	(49,753)
Included in earnings (Assets)	(9)	(2)	(988)	(2)
Included in OCI (Assets)	52	81	1,054	286
Purchases (Assets)	7,563	22,821	17,107	54,445
Sales (Assets)	0	0	(4,015)	0
Settlements/ Distributions (Assets)	(1,826)	(4,867)	(3,043)	(10,530)
Closing Balance (Assets)	78,012	73,149	78,012	73,149
Change in unrealized investment gain/loss relating to assets held at the reporting date (Assets)	0	0	0	0
Other Investments [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Opening Balance (Assets)	107,638	36,921	27,257	37,046
Transfers into Level 3 (Assets)	0	0	36,378	0
Transfers out of Level 3 (Assets)	0	0	0	0
Included in earnings (Assets)	8,064	1,192	15,926	7,930
Included in OCI (Assets)	0	0	0	0
Purchases (Assets)	1,500	0	44,405	0
Sales (Assets)	0	0	0	0
Settlements/ Distributions (Assets)	(10,519)	(3,118)	(17,283)	(9,981)
Closing Balance (Assets)	106,683	34,995	106,683	34,995
Change in unrealized investment gain/loss relating to assets held at the reporting date (Assets)	8,064	1,192	15,926	7,930
Other Assets [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Opening Balance (Assets)	25,030	25,077	29,320	111
Transfers into Level 3 (Assets)	0	0	0	0
Transfers out of Level 3 (Assets)	0	0	0	0
Included in earnings (Assets)	923	210	3,613	(780)
Included in OCI (Assets)	0	0	0	0
Purchases (Assets)	1,818	0	3,623	25,000
Sales (Assets)	0	0	0	0
Settlements/ Distributions (Assets)	0	(240)	(8,785)	716
Closing Balance (Assets)	27,771	25,047	27,771	25,047
Change in unrealized investment gain/loss relating to assets held at the reporting date (Assets)	923	210	1,027	47
Total Assets [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Opening Balance (Assets)	204,900	127,016	106,017	110,788
Transfers into Level 3 (Assets)	0	0	56,790	5,072
Transfers out of Level 3 (Assets)	0	(9,902)	(1,955)	(49,753)
Included in earnings (Assets)	8,978	1,400	18,551	7,148
Included in OCI (Assets)	52	81	1,054	286
Purchases (Assets)	10,881	22,821	65,135	79,445
Sales (Assets)	0	0	(4,015)	0
Settlements/ Distributions (Assets)	(12,345)	(8,225)	(29,111)	(19,795)
Closing Balance (Assets)	212,466	133,191	212,466	133,191
Change in unrealized investment gain/loss relating to assets held at the reporting date (Assets)	8,987	1,402	16,953	7,977
Corporate Debt [Member] | Fixed Maturities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Opening Balance (Assets)	62,022	43,008	38,518	15,837
Transfers into Level 3 (Assets)	0	0	20,412	0
Transfers out of Level 3 (Assets)	0	0	(1,955)	0
Included in earnings (Assets)	(9)	(2)	(988)	(2)
Included in OCI (Assets)	100	300	1,188	724
Purchases (Assets)	7,563	22,821	17,107	54,445
Sales (Assets)	0	0	(4,015)	0
Settlements/ Distributions (Assets)	(584)	(4,403)	(1,175)	(9,280)
Closing Balance (Assets)	69,092	61,724	69,092	61,724
Change in unrealized investment gain/loss relating to assets held at the reporting date (Assets)	0	0	0	0
CMBS [Member] | Fixed Maturities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Opening Balance (Assets)	10,210	21,900	10,922	17,763
Transfers into Level 3 (Assets)	0	0	0	5,072
Transfers out of Level 3 (Assets)	0	(9,902)	0	(9,902)
Included in earnings (Assets)	0	0	0	0
Included in OCI (Assets)	(48)	(219)	(134)	(543)
Purchases (Assets)	0	0	0	0
Sales (Assets)	0	0	0	0
Settlements/ Distributions (Assets)	(1,242)	(461)	(1,868)	(1,072)
Closing Balance (Assets)	8,920	11,318	8,920	11,318
Change in unrealized investment gain/loss relating to assets held at the reporting date (Assets)	0	0	0	0
ABS [Member] | Fixed Maturities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Opening Balance (Assets)	0	110	0	40,031
Transfers into Level 3 (Assets)	0	0	0	0
Transfers out of Level 3 (Assets)	0	0	0	(39,851)
Included in earnings (Assets)	0	0	0	0
Included in OCI (Assets)	0	0	0	105
Purchases (Assets)	0	0	0	0
Sales (Assets)	0	0	0	0
Settlements/ Distributions (Assets)	0	(3)	0	(178)
Closing Balance (Assets)	0	107	0	107
Change in unrealized investment gain/loss relating to assets held at the reporting date (Assets)	0	0	0	0
Other Privately Held Investments [Member] | Other Investments [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Opening Balance (Assets)	41,755	0	0	0
Transfers into Level 3 (Assets)	0	0	0	0
Transfers out of Level 3 (Assets)	0	0	0	0
Included in earnings (Assets)	(355)	0	(1,505)	0
Included in OCI (Assets)	0	0	0	0
Purchases (Assets)	1,500	0	44,405	0
Sales (Assets)	0	0	0	0
Settlements/ Distributions (Assets)	0	0	0	0
Closing Balance (Assets)	42,900	0	42,900	0
Change in unrealized investment gain/loss relating to assets held at the reporting date (Assets)	(355)	0	(1,505)	0
CLO-Equities [Member] | Other Investments [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Opening Balance (Assets)	65,883	36,921	27,257	37,046
Transfers into Level 3 (Assets)	0	0	36,378	0
Transfers out of Level 3 (Assets)	0	0	0	0
Included in earnings (Assets)	8,419	1,192	17,431	7,930
Included in OCI (Assets)	0	0	0	0
Purchases (Assets)	0	0	0	0
Sales (Assets)	0	0	0	0
Settlements/ Distributions (Assets)	(10,519)	(3,118)	(17,283)	(9,981)
Closing Balance (Assets)	63,783	34,995	63,783	34,995
Change in unrealized investment gain/loss relating to assets held at the reporting date (Assets)	8,419	1,192	17,431	7,930
Derivative [Member] | Other Liabilities [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Opening Balance (Liabilities)	1,978	818	10,937	15,288
Transfers into Level 3 (Liabilities)	0	0	0	0
Transfers out of Level 3 (Liabilities)	0	0	0	0
Included in earnings (Liabilities)	(169)	(331)	2,445	(12,053)
Included in OCI (Liabilities)	0	0	0	0
Purchases (Liabilities)	6,384	6,475	7,189	8,698
Sales (Liabilities)	0	0	0	0
Settlements/ Distributions (Liabilities)	(9)	0	(12,387)	(4,971)
Closing Balance (Liabilities)	8,184	6,962	8,184	6,962
Change in unrealized investment gain/loss relating to assets held at the reporting date (Liabilities)	335	(331)	457	(318)
Derivative [Member] | Other Assets [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Opening Balance (Assets)	5	240	4,395	111
Transfers into Level 3 (Assets)	0	0	0	0
Transfers out of Level 3 (Assets)	0	0	0	0
Included in earnings (Assets)	665	35	3,255	(792)
Included in OCI (Assets)	0	0	0	0
Purchases (Assets)	1,818	0	3,623	0
Sales (Assets)	0	0	0	0
Settlements/ Distributions (Assets)	0	(240)	(8,785)	716
Closing Balance (Assets)	2,488	35	2,488	35
Change in unrealized investment gain/loss relating to assets held at the reporting date (Assets)	665	35	669	35
Insurance-linked securities [Member] | Other Assets [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Opening Balance (Assets)	25,025	24,837	24,925	0
Transfers into Level 3 (Assets)	0	0	0	0
Transfers out of Level 3 (Assets)	0	0	0	0
Included in earnings (Assets)	258	175	358	12
Included in OCI (Assets)	0	0	0	0
Purchases (Assets)	0	0	0	25,000
Sales (Assets)	0	0	0	0
Settlements/ Distributions (Assets)	0	0	0	0
Closing Balance (Assets)	25,283	25,012	25,283	25,012
Change in unrealized investment gain/loss relating to assets held at the reporting date (Assets)	$ 258	$ 175	$ 358	$ 12

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FAIR VALUE MEASUREMENTS (DETAILS 4) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Senior notes	$ 992,633	$ 991,825
Estimate Of Fair Value [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Senior notes	$ 1,083,000	$ 1,058,000

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DERIVATIVE INSTRUMENTS (DETAILS) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Derivative Fair Values on Consolidated Balance Sheet [Line Items]
Derivative Asset Fair Value	$ 6,957	$ 6,467
Derivative Liability Fair Value	12,595	18,629
Other Assets [Member]
Derivative Fair Values on Consolidated Balance Sheet [Line Items]
Derivative Asset Fair Value	6,957	6,467
Other Liabilities [Member]
Derivative Fair Values on Consolidated Balance Sheet [Line Items]
Derivative Liability Fair Value	12,595	18,629
Investment Portfolio [Member] | Foreign Exchange Forward Contracts [Member] | Not Designated as Hedging Instruments [Member]
Derivative Fair Values on Consolidated Balance Sheet [Line Items]
Derivative Notional Amount	40,367	198,406
Investment Portfolio [Member] | Foreign Exchange Forward Contracts [Member] | Other Assets [Member] | Not Designated as Hedging Instruments [Member]
Derivative Fair Values on Consolidated Balance Sheet [Line Items]
Derivative Asset Fair Value	279	490
Investment Portfolio [Member] | Foreign Exchange Forward Contracts [Member] | Other Liabilities [Member] | Not Designated as Hedging Instruments [Member]
Derivative Fair Values on Consolidated Balance Sheet [Line Items]
Derivative Liability Fair Value	17	837
Investment Portfolio [Member] | Interest Rate Swap [Member] | Not Designated as Hedging Instruments [Member]
Derivative Fair Values on Consolidated Balance Sheet [Line Items]
Derivative Notional Amount	0	0
Investment Portfolio [Member] | Interest Rate Swap [Member] | Other Assets [Member] | Not Designated as Hedging Instruments [Member]
Derivative Fair Values on Consolidated Balance Sheet [Line Items]
Derivative Asset Fair Value	0	0
Investment Portfolio [Member] | Interest Rate Swap [Member] | Other Liabilities [Member] | Not Designated as Hedging Instruments [Member]
Derivative Fair Values on Consolidated Balance Sheet [Line Items]
Derivative Liability Fair Value	0	0
Underwriting Portfolio [Member] | Foreign Exchange Forward Contracts [Member] | Not Designated as Hedging Instruments [Member]
Derivative Fair Values on Consolidated Balance Sheet [Line Items]
Derivative Notional Amount	560,477	692,023
Underwriting Portfolio [Member] | Foreign Exchange Forward Contracts [Member] | Other Assets [Member] | Not Designated as Hedging Instruments [Member]
Derivative Fair Values on Consolidated Balance Sheet [Line Items]
Derivative Asset Fair Value	25	1,582
Underwriting Portfolio [Member] | Foreign Exchange Forward Contracts [Member] | Other Liabilities [Member] | Not Designated as Hedging Instruments [Member]
Derivative Fair Values on Consolidated Balance Sheet [Line Items]
Derivative Liability Fair Value	4,394	6,855
Underwriting Portfolio [Member] | Weather Related Derivative [Member] | Not Designated as Hedging Instruments [Member]
Derivative Fair Values on Consolidated Balance Sheet [Line Items]
Derivative Notional Amount	59,436	51,395
Underwriting Portfolio [Member] | Weather Related Derivative [Member] | Other Assets [Member] | Not Designated as Hedging Instruments [Member]
Derivative Fair Values on Consolidated Balance Sheet [Line Items]
Derivative Asset Fair Value	2,488	4,395
Underwriting Portfolio [Member] | Weather Related Derivative [Member] | Other Liabilities [Member] | Not Designated as Hedging Instruments [Member]
Derivative Fair Values on Consolidated Balance Sheet [Line Items]
Derivative Liability Fair Value	8,184	10,937
Underwriting Portfolio [Member] | Commodity Contract [Member] | Not Designated as Hedging Instruments [Member]
Derivative Fair Values on Consolidated Balance Sheet [Line Items]
Derivative Notional Amount	181,000	0
Underwriting Portfolio [Member] | Commodity Contract [Member] | Other Assets [Member] | Not Designated as Hedging Instruments [Member]
Derivative Fair Values on Consolidated Balance Sheet [Line Items]
Derivative Asset Fair Value	4,165	0
Underwriting Portfolio [Member] | Commodity Contract [Member] | Other Liabilities [Member] | Not Designated as Hedging Instruments [Member]
Derivative Fair Values on Consolidated Balance Sheet [Line Items]
Derivative Liability Fair Value	$ 0	$ 0

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DERIVATIVE INSTRUMENTS (DETAILS 2) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative assets - gross amounts	$ 9,370	$ 14,336
Derivative assets - gross amounts offset	(2,413)	(7,869)
Derivative assets- net amounts	6,957	6,467
Derivative liabilities - gross amounts	15,008	26,498
Derivative liabilities - gross amounts offset	(2,413)	(7,869)
Derivative liabilities- net amounts	$ 12,595	$ 18,629

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DERIVATIVE INSTRUMENTS (DETAILS 3) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Unrealized and Realized Gains (Losses) Recognized in Earnings for Derivatives Not Designated As Hedges [Line Items]
Unrealized and realized gains (losses) recognized in earnings for derivatives not designated as hedges	$ 2,605	$ 1,476	$ (611)	$ (3,915)
Investment Portfolio [Member] | Foreign Exchange Forward Contracts [Member] | Net Realized Investment Gains (Losses) [Member]
Unrealized and Realized Gains (Losses) Recognized in Earnings for Derivatives Not Designated As Hedges [Line Items]
Unrealized and realized gains (losses) recognized in earnings for derivatives not designated as hedges	155	6,412	39	11,234
Investment Portfolio [Member] | Interest Rate Swap [Member] | Net Realized Investment Gains (Losses) [Member]
Unrealized and Realized Gains (Losses) Recognized in Earnings for Derivatives Not Designated As Hedges [Line Items]
Unrealized and realized gains (losses) recognized in earnings for derivatives not designated as hedges	0	0	0	(4,006)
Underwriting Portfolio [Member] | Foreign Exchange Forward Contracts [Member] | Foreign Exchange Gains (Losses) [Member]
Unrealized and Realized Gains (Losses) Recognized in Earnings for Derivatives Not Designated As Hedges [Line Items]
Unrealized and realized gains (losses) recognized in earnings for derivatives not designated as hedges	(182)	(5,210)	(2,958)	(21,494)
Underwriting Portfolio [Member] | Weather Related Derivative [Member] | Other Insurance Related Income [Member]
Unrealized and Realized Gains (Losses) Recognized in Earnings for Derivatives Not Designated As Hedges [Line Items]
Unrealized and realized gains (losses) recognized in earnings for derivatives not designated as hedges	833	307	809	11,274
Underwriting Portfolio [Member] | Commodity Contract [Member] | Other Insurance Related Income [Member]
Unrealized and Realized Gains (Losses) Recognized in Earnings for Derivatives Not Designated As Hedges [Line Items]
Unrealized and realized gains (losses) recognized in earnings for derivatives not designated as hedges	$ 1,799	$ (33)	$ 1,499	$ (923)

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RESERVE FOR LOSSES AND LOSS EXPENSES (DETAILS) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Reconciliation of Beginning and Ending Gross Unpaid Losses and Loss Expenses
Gross reserve for losses and loss expenses, beginning of period			$ 9,646,285	$ 9,596,797
Less reinsurance recoverable on unpaid losses, beginning of period			(2,031,309)	(1,890,280)
Net reserve for unpaid losses and loss expenses, beginning of period			7,614,976	7,706,517
Net incurred losses and loss expenses related to:
Current year			1,887,715	1,818,672
Prior years	$ (76,019)	$ (45,125)	(224,131)	(165,804)
Net incurred losses and loss expenses			1,663,584	1,652,868
Net paid losses and loss expenses related to:
Current year			(233,124)	(185,953)
Prior years			(1,334,772)	(1,293,776)
Net paid losses and loss expenses			(1,567,896)	(1,479,729)
Foreign exchange and other			(112,649)	(183,360)
Net reserve for unpaid losses and loss expenses, end of period	7,598,015	7,696,296	7,598,015	7,696,296
Reinsurance recoverable on unpaid losses, end of period	2,276,792	2,007,287	2,276,792	2,007,287
Gross reserve for losses and loss expenses, end of period	$ 9,874,807	$ 9,703,583	$ 9,874,807	$ 9,703,583

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RESERVE FOR LOSSES AND LOSS EXPENSES (DETAILS 2) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Net Favorable Prior Year Reserve Development [Line Items]
Net favorable prior year reserve development	$ 76,019	$ 45,125	$ 224,131	$ 165,804
Insurance [Member]
Net Favorable Prior Year Reserve Development [Line Items]
Net favorable prior year reserve development	20,688	2,444	43,181	21,225
Reinsurance [Member]
Net Favorable Prior Year Reserve Development [Line Items]
Net favorable prior year reserve development	$ 55,331	$ 42,681	$ 180,950	$ 144,579

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RESERVE FOR LOSSES AND LOSS EXPENSES (DETAILS 3) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended		9 Months Ended
	Apr. 30, 2016	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Additional Information Related to Net Incurred Losses [Line Items]
Current year				$ 1,887,715	$ 1,818,672
Foreign exchange and other				112,649	183,360
Net favorable (adverse) prior year reserve development		$ 76,019	$ 45,125	224,131	165,804
Short Tail Lines Insurance And Reinsurance Business [Member]
Additional Information Related to Net Incurred Losses [Line Items]
Net favorable (adverse) prior year reserve development		41,000	38,000	116,000	112,000
Professional Lines Insurance and Reinsurance Business [Member]
Additional Information Related to Net Incurred Losses [Line Items]
Net favorable (adverse) prior year reserve development		12,000		28,000
Professional Lines Reinsurance Business [Member]
Additional Information Related to Net Incurred Losses [Line Items]
Net favorable (adverse) prior year reserve development					25,000
Professional Lines Insurance Business [Member]
Additional Information Related to Net Incurred Losses [Line Items]
Net favorable (adverse) prior year reserve development			(15,000)		(16,000)
Credit and Surety Business [Member]
Additional Information Related to Net Incurred Losses [Line Items]
Net favorable (adverse) prior year reserve development			7,000		19,000
Credit And Political Risk Insurance Business [Member]
Additional Information Related to Net Incurred Losses [Line Items]
Net favorable (adverse) prior year reserve development					(15,000)
Liability and Motor Reinsurance Business [Member]
Additional Information Related to Net Incurred Losses [Line Items]
Net favorable (adverse) prior year reserve development		$ 17,000	20,000	72,000	64,000
Liability Insurance Business [Member]
Additional Information Related to Net Incurred Losses [Line Items]
Net favorable (adverse) prior year reserve development			$ (6,000)		(23,000)
Retroactive Reinsurance Recoverable [Member]
Additional Information Related to Net Incurred Losses [Line Items]
Foreign exchange and other	$ 159,000
Catastrophe and Weather-related Events [Member]
Additional Information Related to Net Incurred Losses [Line Items]
Current year				$ 145,000	$ 90,000

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SHARE-BASED COMPENSATION (DETAILS) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Restricted Stock And Restricted Stock Units [Member]
Reconcilation of Beginning and Ending Balance of Nonvested Restricted Stock (including RSUs) [Abstract]
Share based compensation expense incurred	$ 14	$ 11	$ 50	$ 41
Tax benefit related to share-based compensation costs incurred	3	3	11	11
Fair value - vested during period			66	73
Unrecognized share-based compensation costs	104		$ 104
Unrecognized share-based compensation costs - weighted average period expected to be recognized			2 years 5 months 4 days
Restricted Stock And Restricted Stock Units [Member] | Cash Settled [Member]
Reconcilation of Beginning and Ending Balance of Nonvested Restricted Stock (including RSUs) [Abstract]
Liability for cash-settled units	$ 34	$ 23	$ 34	$ 23
Performance Based Restricted Stock and Restricted Stock Units [Member] | Share Settled [Member]
Reconcilation of Beginning and Ending Balance of Nonvested Restricted Stock (including RSUs) [Roll Forward]
Nonvested restricted stock (in shares) - beginning of period			201
Granted (in shares)			104
Vested (in shares)			(48)
Forfeited (in shares)			0
Nonvested restricted stock (in shares) - end of period	257		257
Reconcilation of Beginning and Ending Balance of Nonvested Restricted Stock (including RSUs) [Abstract]
Weighted average grant date fair value - beginning of period (in usd per share)			$ 49.24
Weighted average grant date fair value - granted (in usd per share)			53.80
Weighted average grant date fair value - vested (in usd per share)			45.38
Weighted average grant date fair value - forfeited (in usd per share)			0.00
Weighted average grant date fair value - end of period (in usd per share)	$ 52.04		$ 52.04
Performance Based Restricted Stock and Restricted Stock Units [Member] | Cash Settled [Member]
Reconcilation of Beginning and Ending Balance of Nonvested Restricted Stock (including RSUs) [Roll Forward]
Nonvested restricted stock (in shares) - beginning of period			70
Granted (in shares)			18
Vested (in shares)			(32)
Forfeited (in shares)			0
Nonvested restricted stock (in shares) - end of period	56		56
Service Based Restricted Stock And Restricted Stock Units [Member] | Share Settled [Member]
Reconcilation of Beginning and Ending Balance of Nonvested Restricted Stock (including RSUs) [Roll Forward]
Nonvested restricted stock (in shares) - beginning of period			1,954
Granted (in shares)			586
Vested (in shares)			(779)
Forfeited (in shares)			(94)
Nonvested restricted stock (in shares) - end of period	1,667		1,667
Reconcilation of Beginning and Ending Balance of Nonvested Restricted Stock (including RSUs) [Abstract]
Weighted average grant date fair value - beginning of period (in usd per share)			$ 43.34
Weighted average grant date fair value - granted (in usd per share)			53.81
Weighted average grant date fair value - vested (in usd per share)			39.26
Weighted average grant date fair value - forfeited (in usd per share)			47.03
Weighted average grant date fair value - end of period (in usd per share)	$ 48.77		$ 48.77
Service Based Restricted Stock And Restricted Stock Units [Member] | Cash Settled [Member]
Reconcilation of Beginning and Ending Balance of Nonvested Restricted Stock (including RSUs) [Roll Forward]
Nonvested restricted stock (in shares) - beginning of period			1,433
Granted (in shares)			494
Vested (in shares)			(371)
Forfeited (in shares)			(94)
Nonvested restricted stock (in shares) - end of period	1,462		1,462

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EARNINGS PER COMMON SHARE (DETAILS) - USD ($) $ / shares in Units, $ in Thousands		1 Months Ended	3 Months Ended		5 Months Ended	9 Months Ended
	Jan. 15, 2016	Aug. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Jan. 15, 2016	Sep. 30, 2016	Sep. 30, 2015
Basic earnings per common share
Net income			$ 186,613	$ 257,642		$ 364,460	$ 496,838
Less: preferred share dividends			9,969	10,022		29,906	30,066
Net income available to common shareholders			$ 176,644	$ 247,620		$ 334,554	$ 466,772
Weighted average number of common shares outstanding - basic (in shares)			89,621,000	98,226,000		91,852,000	99,464,000
Basic earnings per common share (in usd per share)			$ 1.97	$ 2.52		$ 3.64	$ 4.69
Diluted earnings per common share
Net income available to common shareholders			$ 176,644	$ 247,620		$ 334,554	$ 466,772
Weighted average number of common shares outstanding - basic (in shares)			89,621,000	98,226,000		91,852,000	99,464,000
Share based compensation plans (in shares)			730,000	898,000		727,000	1,004,000
Weighted average number of common shares outstanding - diluted (in shares)			90,351,000	99,124,000		92,579,000	100,468,000
Diluted earnings per common share (in usd per share)			$ 1.96	$ 2.50		$ 3.61	$ 4.65
Anti-dilutive shares excluded from the dilutive computation (in shares)			0	0		226,000	219,000
August 17, 2015 ASR agreement [Member]
Accelerated Share Repurchases [Line Items]
Shares repurchased (in shares)	1,358,380.00	4,149,378		4,149,378	5,507,758	1,358,380

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SHAREHOLDERS' EQUITY (DETAILS) - shares shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued, balance at beginning of period (in shares)			176,240
Total shares issued at end of period (in shares)	176,575		176,575
Treasury shares, balance at beginning of period			(80,174)
Total treasury shares at end of period (in shares)	(88,136)		(88,136)
Total shares outstanding (in shares)	88,439		88,439		96,066
Common Stock [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued, balance at beginning of period (in shares)	176,575	176,206	176,240	175,478
Shares issued (in shares)	0	16	335	744
Total shares issued at end of period (in shares)	176,575	176,222	176,575	176,222
Treasury shares, balance at beginning of period	(85,921)	(75,922)	(80,174)	(76,052)
Shares repurchased (in shares)	(2,252)	(4,257)	(8,499)	(4,607)
Shares reissued from treasury (in shares)	37	6	537	486
Total treasury shares at end of period (in shares)	(88,136)	(80,173)	(88,136)	(80,173)
Total shares outstanding (in shares)	88,439	96,049	88,439	96,049

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SHAREHOLDERS' EQUITY (DETAILS 2) - USD ($) $ / shares in Units, $ in Thousands		1 Months Ended	3 Months Ended		5 Months Ended	9 Months Ended
	Jan. 15, 2016	Aug. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Jan. 15, 2016	Sep. 30, 2016	Sep. 30, 2015
August 17, 2015 ASR agreement [Member]
Treasury Shares [Line Items]
Total shares (in shares)	1,358,380.00	4,149,378		4,149,378	5,507,758	1,358,380
Total cost		$ 300,000
Average price per share (in usd per share)					$ 54.47
Common Stock [Member]
Treasury Shares [Line Items]
Total shares (in shares)			2,252,000	4,257,000		8,499,000	4,607,000
Total cost			$ 126,036	$ 246,147		$ 449,085	$ 264,076
Average price per share (in usd per share)			$ 55.98	$ 57.83		$ 52.84	$ 57.32
Common Stock [Member] | In the Open Market [Member]
Treasury Shares [Line Items]
Total shares (in shares)			2,232,000	4,248,000		8,236,000	4,264,000
Total cost			$ 124,948	$ 245,658		$ 434,948	$ 246,490
Average price per share (in usd per share)			$ 56.00	$ 57.83		$ 52.81	$ 57.80
Common Stock [Member] | In the Open Market [Member] | August 17, 2015 ASR agreement [Member]
Treasury Shares [Line Items]
Total shares (in shares)						1,358,380
Common Stock [Member] | From Employees [Member]
Treasury Shares [Line Items]
Total shares (in shares)			20,000	9,000		263,000	343,000
Total cost			$ 1,088	$ 489		$ 14,137	$ 17,586
Average price per share (in usd per share)			$ 54.13	$ 55.59		$ 53.68	$ 51.28

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SHAREHOLDERS' EQUITY (DETAILS 3) - USD ($) $ / shares in Units, $ in Thousands			1 Months Ended	3 Months Ended	5 Months Ended	9 Months Ended
	Jan. 15, 2016	Dec. 31, 2015	Aug. 30, 2015	Sep. 30, 2015	Jan. 15, 2016	Sep. 30, 2016	Sep. 30, 2015	Aug. 17, 2015
Treasury shares, at cost [Member]
Class of Stock [Line Items]
Total cost						$ 449,086	$ 264,076
Additional paid-in capital [Member]
Class of Stock [Line Items]
Total cost						$ (60,000)	$ 60,000
August 17, 2015 ASR agreement [Member]
Class of Stock [Line Items]
Accelerated Share Repurchases, Authorized Amount								$ 300,000
Total cost			$ 300,000
Total shares (in shares)	1,358,380.00		4,149,378	4,149,378	5,507,758	1,358,380
Accelerated Share Repurchases, initial repurchase percentage			80.00%
Average price per share (in usd per share)					$ 54.47
August 17, 2015 ASR agreement [Member] | Treasury shares, at cost [Member]
Class of Stock [Line Items]
Total cost	$ 60,000	$ 240,000
August 17, 2015 ASR agreement [Member] | Additional paid-in capital [Member]
Class of Stock [Line Items]
Total cost		$ 60,000

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SHAREHOLDERS' EQUITY (DETAILS 4) - Series B Preferred Stock [Member] $ in Millions	Jan. 27, 2016 USD ($) shares
Class of Stock [Line Items]
Preferred shares, number of shares repurchased | shares	28,430
Preferred shares, aggregate liquidation preference repurchased | $	$ 3

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COMMITMENTS AND CONTINGENCIES (DETAILS) - Minimum reinsurance premiums [Member] $ in Millions	Sep. 30, 2016 USD ($)
Unrecorded Unconditional Purchase Obligation [Line Items]
Outstanding purchase commitment	$ 33
Outstanding purchase commitment, due in 2016	3
Outstanding purchase commitment, due in 2017	$ 30

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OTHER COMPREHENSIVE INCOME (DETAILS) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Before Tax Amount
Other Comprehensive Income (Loss), before Tax	$ 36,797	$ (41,068)	$ 309,267	$ (76,815)
Tax (Expense) Benefit
Other Comprehensive Income (Loss), Tax	(1,381)	1,541	(22,297)	4,796
Net of Tax Amount
Adjustment for reclassification of net realized investment gains and OTTI losses recognized in net income	(2,642)	74,810	42,620	128,770
Other Comprehensive Income (Loss), Net of Tax	35,416	(39,527)	286,970	(72,019)
Unrealized gains (losses) on available for sale investments, net of tax [Member]
Before Tax Amount
Unrealized investment gains (losses) arising during the period	40,125	(102,810)	263,235	(183,822)
Adjustment for reclassification of net realized investment gains (losses) and OTTI losses recognized in net income	(5,050)	76,368	40,338	130,858
Other Comprehensive Income (Loss), before Tax	35,075	(26,442)	303,573	(52,964)
Tax (Expense) Benefit
Unrealized investment gains (losses) arising during the period	(3,789)	3,099	(24,579)	6,884
Adjustment for reclassification of net realized investment gains (losses) and OTTI losses recognized in net income	2,408	(1,558)	2,282	(2,088)
Other Comprehensive Income (Loss), Tax	(1,381)	1,541	(22,297)	4,796
Net of Tax Amount
Unrealized investment gains (losses) arising during the period	36,336	(99,711)	238,656	(176,938)
Adjustment for reclassification of net realized investment gains and OTTI losses recognized in net income	(2,642)	74,810	42,620	128,770
Other Comprehensive Income (Loss), Net of Tax	33,694	(24,901)	281,276	(48,168)
Accumulated Other-than-Temporary Impairment, net of tax [Member]
Before Tax Amount
Other Comprehensive Income (Loss), before Tax	0	0	0	0
Tax (Expense) Benefit
Other Comprehensive Income (Loss), Tax	0	0	0	0
Net of Tax Amount
Other Comprehensive Income (Loss), Net of Tax	0	0	0	0
Cumulative foreign currency translation adjustments, net of tax [Member]
Before Tax Amount
Other Comprehensive Income (Loss), before Tax	1,722	(14,626)	5,694	(23,851)
Tax (Expense) Benefit
Other Comprehensive Income (Loss), Tax	0	0	0	0
Net of Tax Amount
Other Comprehensive Income (Loss), Net of Tax	$ 1,722	$ (14,626)	$ 5,694	$ (23,851)

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OTHER COMPREHENSIVE INCOME (DETAILS 2) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Reclassification out of accumulated comprehensive income into net income available to common shareholders [Line Items]
Other realized investment gains (losses)	$ 9,452	$ (37,656)	$ (19,949)	$ (60,856)
OTTI losses	(4,247)	(32,301)	(20,346)	(62,762)
Income before income taxes and interest in income (loss) of equity method investments	198,399	257,672	374,606	497,993
Income tax (expense) benefit	(9,352)	(30)	(7,712)	(1,155)
Net income available to common shareholders	176,644	247,620	334,554	466,772
Unrealized investment gains (losses) on available for sale investments [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification out of accumulated comprehensive income into net income available to common shareholders [Line Items]
Other realized investment gains (losses)	9,297	(44,067)	(19,992)	(68,096)
OTTI losses	(4,247)	(32,301)	(20,346)	(62,762)
Income before income taxes and interest in income (loss) of equity method investments	5,050	(76,368)	(40,338)	(130,858)
Income tax (expense) benefit	(2,408)	1,558	(2,282)	2,088
Net income available to common shareholders	$ 2,642	$ (74,810)	$ (42,620)	$ (128,770)

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SUBSQUENT EVENT (DETAILS) - USD ($) $ in Thousands	1 Months Ended	9 Months Ended
	Oct. 27, 2016	Sep. 30, 2016	Sep. 30, 2015
Subsequent Event [Line Items]
Preliminary loss estimate		$ 1,887,715	$ 1,818,672
Hurricane [Member] | Minimum [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Preliminary loss estimate	$ 45,000
Hurricane [Member] | Maximum [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Preliminary loss estimate	$ 60,000