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 March 31, 2015
	OR
¨	TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from _______ to ______

Commission file number 1-10804

XL GROUP

Public Limited Company

(Exact name of registrant as specified in its charter)

Ireland	98-0665416
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)

XL House, 8 St. Stephen's Green, Dublin 2, Ireland

(Address of principal executive offices and zip code)

+353 (1) 400-5500

(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 for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes x No ¨

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

Indicate by check mark 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. (Check one):

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 May 6, 2015, there were 306,635,642 outstanding Ordinary Shares, $0.01 par value per share, of the registrant.

XL GROUP PLC

INDEX TO FORM 10-Q

		Page No.
	PART I—FINANCIAL INFORMATION
Item 1.	Financial Statements:
	Unaudited Consolidated Balance Sheets at March 31, 2015 and December 31, 2014	1
	Unaudited Consolidated Statements of Income for the Three Months Ended March 31, 2015 and 2014	2
	Unaudited Consolidated Statements of Comprehensive Income for the Three Months Ended March 31, 2015 and 2014	3
	Unaudited Consolidated Statements of Shareholders’ Equity for the Three Months Ended March 31, 2015 and 2014	4
	Unaudited Consolidated Statements of Cash Flows for the Three Months Ended March 31, 2015 and 2014	5
	Notes to Unaudited Consolidated Financial Statements	6
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	40
Item 3.	Quantitative and Qualitative Disclosures About Market Risk	74
Item 4.	Controls and Procedures	82
	PART II—OTHER INFORMATION
Item 1.	Legal Proceedings	82
Item 1A.	Risk Factors	82
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	83
Item 6.	Exhibits	83
	Signatures	85

PART I – FINANCIAL INFORMATION

ITEM 1. FINANCIAL STATEMENTS

XL GROUP PLC

UNAUDITED CONSOLIDATED BALANCE SHEETS

(U.S. dollars in thousands, except share data)	March 31, 2015		December 31, 2014
ASSETS
Investments:
Fixed maturities, at fair value (amortized cost: 2015, $27,370,101; 2014, $27,728,771)	$	29,110,400	$	29,359,034
Equity securities, at fair value (cost: 2015, $665,682; 2014, $763,833)	783,471		868,292
Short-term investments, at fair value (amortized cost: 2015, $169,903; 2014, $257,221)	168,862		256,727
Total investments available for sale	$	30,062,733	$	30,484,053
Fixed maturities, trading at fair value (amortized cost: 2015, $138,647; 2014, $1,180)	$	139,377	$	1,171
Investments in affiliates	1,655,394		1,637,620
Other investments	1,328,935		1,248,439
Total investments	$	33,186,439	$	33,371,283
Cash and cash equivalents	3,209,934		2,521,814
Accrued investment income	278,714		315,964
Deferred acquisition costs	417,275		354,533
Ceded unearned premiums	1,078,575		952,525
Premiums receivable	2,898,739		2,473,736
Reinsurance balances receivable	118,384		131,519
Unpaid losses and loss expenses recoverable	3,529,331		3,429,368
Receivable from investments sold	19,627		92,762
Goodwill and other intangible assets	442,431		447,952
Deferred tax asset	192,286		204,491
Other assets	708,821		750,872
Total assets	$	46,080,556	$	45,046,819
LIABILITIES AND SHAREHOLDERS’ EQUITY
Liabilities:
Unpaid losses and loss expenses	$	18,965,264	$	19,353,243
Deposit liabilities	1,211,203		1,245,367
Future policy benefit reserves	4,375,863		4,707,199
Funds withheld on life retrocession arrangements (net of future policy benefit reserves recoverable: 2015, $3,933,589; 2014, 4,265,678)	1,138,652		1,155,016
Unearned premiums	4,532,022		3,973,132
Notes payable and debt	2,643,561		1,662,580
Reinsurance balances payable	558,952		493,230
Payable for investments purchased	75,145		42,291
Deferred tax liability	66,115		66,246
Other liabilities	867,356		912,749
Total liabilities	$	34,434,133	$	33,611,053
Commitments and Contingencies
Shareholders’ Equity:
Ordinary shares, 999,990,000 authorized, par value $0.01; issued and outstanding (2015, 256,683,621; 2014, 255,182,955)	$	2,567	$	2,552
Additional paid in capital	7,361,138		7,359,102
Accumulated other comprehensive income	1,705,170		1,484,458
Retained earnings	1,175,182		1,187,639
Shareholders’ equity attributable to XL Group plc	$	10,244,057	$	10,033,751
Non-controlling interest in equity of consolidated subsidiaries	1,402,366		1,402,015
Total shareholders’ equity	$	11,646,423	$	11,435,766
Total liabilities and shareholders’ equity	$	46,080,556	$	45,046,819

See accompanying Notes to Unaudited Consolidated Financial Statements

1

XL GROUP PLC

UNAUDITED CONSOLIDATED STATEMENTS OF INCOME

	Three Months Ended
	March 31,
(U.S. dollars in thousands, except per share data)	2015			2014
Revenues:
Net premiums earned	$	1,334,000		$	1,488,839
Net investment income:
Net investment income - excluding Life Funds Withheld Assets	158,094			233,189
Net investment income - Life Funds Withheld Assets	50,419			—
Total net investment income	$	208,513		$	233,189
Net realized gains (losses) on investments, and net unrealized gains (losses) on investments trading securities ("Trading") - Life Funds Withheld Assets:
Net realized gains (losses) on investments sold - excluding Life Funds Withheld Assets	15,178			22,956
Other-than-temporary impairments ("OTTI") on investments - excluding Life Funds Withheld Assets	(10,515		)	(2,276		)
OTTI on investments transferred to (from) other comprehensive income - excluding Life Funds Withheld Assets	(61		)	(1,451		)
Net realized gains (losses) on investments sold - Life Funds Withheld Assets	52,738			—
OTTI on investments - Life Funds Withheld Assets	(5,209		)	—
Net unrealized gains (losses) on investments Trading - Life Funds Withheld Assets	760			—
Total net realized gains (losses) on investments, and net unrealized gains (losses) on investments Trading - Life Funds Withheld Assets	$	52,891		$	19,229
Net realized and unrealized gains (losses) on derivative instruments	16,521			1,810
Net realized and unrealized gains (losses) on life retrocession embedded derivative and derivative instruments - Life Funds Withheld Assets	(229,367		)	—
Income (loss) from investment fund affiliates	35,329			33,303
Fee income and other	4,728			11,454
Total revenues	$	1,422,615		$	1,787,824
Expenses:
Net losses and loss expenses incurred	$	769,827		$	831,505
Claims and policy benefits	19,387			113,587
Acquisition costs	153,696			199,414
Operating expenses	325,656			310,424
Foreign exchange (gains) losses	27,390			10,441
Interest expense	51,438			42,941
Total expenses	$	1,347,394		$	1,508,312
Income (loss) before income tax and income (loss) from operating affiliates	$	75,221		$	279,512
Income (loss) from operating affiliates	22,668			46,285
Provision (benefit) for income tax	24,218			34,321
Net income (loss)	$	73,671		$	291,476
Non-controlling interests	37,390			35,759
Net income (loss) attributable to ordinary shareholders	$	36,281		$	255,717
Weighted average ordinary shares and ordinary share equivalents outstanding, in thousands – basic	255,724			276,337
Weighted average ordinary shares and ordinary share equivalents outstanding, in thousands – diluted	260,704			280,458
Earnings (loss) per ordinary share and ordinary share equivalent – basic	$	0.14		$	0.93
Earnings (loss) per ordinary share and ordinary share equivalent – diluted	$	0.14		$	0.91

See accompanying Notes to Unaudited Consolidated Financial Statements

2

XL GROUP PLC

UNAUDITED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

	Three Months Ended
	March 31,
(U.S. dollars in thousands)	2015		2014
Net income (loss) attributable to ordinary shareholders	$	36,281	$	255,717
Change in net unrealized gains (losses) on investments - excluding Life Funds Withheld Assets, net of tax	60,345		241,390
Change in adjustments related to future policy benefit reserves, net of tax	60,356		(34,004		)
Change in net unrealized gains (losses) on investments - Life Funds Withheld Assets, net of tax	37,115		—
Change in net unrealized gains (losses) on affiliate and other investments, net of tax	15,865		3,123
Change in OTTI losses recognized in other comprehensive income, net of tax	9,858		3,296
Change in underfunded pension liability, net of tax	975		(31		)
Change in value of cash flow hedge	95		110
Foreign currency translation adjustments, net of tax	36,103		(3,880		)
Comprehensive income (loss)	$	256,993	$	465,721

See accompanying Notes to Unaudited Consolidated Financial Statements

3

XL GROUP PLC

UNAUDITED CONSOLIDATED STATEMENTS OF SHAREHOLDERS’ EQUITY

	Three Months Ended
	March 31,
(U.S. dollars in thousands)	2015			2014
Ordinary Shares:
Balance - beginning of year	$	2,552		$	2,783
Issuance of ordinary shares	15			10
Buybacks of ordinary shares	(1		)	(58		)
Exercise of stock options	1			1
Balance - end of period	$	2,567		$	2,736
Additional Paid in Capital:
Balance - beginning of year	$	7,359,102		$	7,994,100
Issuance of ordinary shares	6			7
Buybacks of ordinary shares	(1,573		)	(168,144		)
Exercise of stock options	1,771			1,309
Share-based compensation	1,832			1,396
Balance - end of period	$	7,361,138		$	7,828,668
Accumulated Other Comprehensive Income (Loss):
Balance - beginning of year	$	1,484,458		$	736,657
Change in net unrealized gains (losses) on investments - excluding Life Funds Withheld Assets, net of tax	60,345			241,390
Change in adjustments related to future policy benefit reserves, net of tax	60,356			(34,004		)
Change in net unrealized gains (losses) on investments - Life Funds Withheld Assets, net of tax	37,115			—
Change in net unrealized gains (losses) on affiliate and other investments, net of tax	15,865			3,123
Change in OTTI losses recognized in other comprehensive income, net of tax	9,858			3,296
Change in underfunded pension liability, net of tax	975			(31		)
Change in value of cash flow hedge	95			110
Foreign currency translation adjustments, net of tax	36,103			(3,880		)
Balance - end of period	$	1,705,170		$	946,661
Retained Earnings (Deficit):
Balance - beginning of year	$	1,187,639		$	1,264,093
Net income (loss) attributable to ordinary shareholders	36,281			255,717
Dividends on ordinary shares	(41,599		)	(44,620		)
Buybacks of ordinary shares	(393		)	(8,293		)
Share-based compensation	(6,746		)	—
Balance - end of period	$	1,175,182		$	1,466,897
Non-controlling Interest in Equity of Consolidated Subsidiaries:
Balance - beginning of year	$	1,402,015		$	1,351,665
Non-controlling interests - contributions	2,569			7,001
Non-controlling interests - distributions	(4,175		)	—
Non-controlling interests	1,957			346
Balance - end of period	$	1,402,366		$	1,359,012
Total Shareholders’ Equity	$	11,646,423		$	11,603,974

See accompanying Notes to Unaudited Consolidated Financial Statements

4

XL GROUP PLC

UNAUDITED CONSOLIDATED STATEMENTS OF CASH FLOWS

	Three Months Ended
	March 31,
(U.S. dollars in thousands)	2015			2014
Cash flows provided by (used in) operating activities:
Net income (loss)	$	73,671		$	291,476
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Total net realized (gains) losses on investments and net unrealized (gains) losses on investments, Trading - Life Funds Withheld Assets	(52,891		)	(19,229		)
Net realized and unrealized (gains) losses on derivative instruments	(16,521		)	(1,810		)
Net realized and unrealized (gains) losses on life retrocession embedded derivative and derivative instruments - Life Funds Withheld Assets	229,367			—
Amortization of premiums (discounts) on fixed maturities	35,998			39,488
(Income) loss from investment and operating affiliates	(45,467		)	(31,999		)
Share-based compensation	18,295			15,974
Depreciation	10,907			14,961
Accretion of deposit liabilities	10,044			10,477
Changes in:
Unpaid losses and loss expenses	77,832			(72,058		)
Future policy benefit reserves	(49,279		)	(49,780		)
Funds withheld on life retrocession arrangements, net	(169,569		)	—
Unearned premiums	655,733			621,009
Premiums receivable	(517,881		)	(594,243		)
Unpaid losses and loss expenses recoverable	(148,962		)	28,747
Ceded unearned premiums	(146,049		)	(110,310		)
Reinsurance balances receivable	10,057			(60,224		)
Deferred acquisition costs	(72,340		)	(56,937		)
Reinsurance balances payable	84,261			269,717
Deferred tax asset - net	14,119			(598		)
Derivatives	141,754			(12,277		)
Other assets	(31,407		)	(25,731		)
Other liabilities	(94,545		)	(77,037		)
Other	17,851			20,452
Total adjustments	$	(38,693	)	$	(91,408	)
Net cash provided by (used in) operating activities	$	34,978		$	200,068
Cash flows provided by (used in) investing activities:
Proceeds from sale of fixed maturities and short-term investments	$	1,473,941		$	1,106,926
Proceeds from redemption of fixed maturities and short-term investments	1,053,739			1,056,358
Proceeds from sale of equity securities	189,473			76,382
Purchases of fixed maturities and short-term investments	(2,835,304		)	(1,411,447		)
Purchases of equity securities	(94,141		)	(80,833		)
Proceeds from sale of affiliates	77,916			145,174
Purchases of affiliates	(29,037		)	(86,205		)
Other, net	(32,141		)	(106,075		)
Net cash provided by (used in) investing activities	$	(195,554	)	$	700,280
Cash flows provided by (used in) financing activities:
Proceeds from issuance of ordinary shares and exercise of stock options	$	1,772		$	1,310
Buybacks of ordinary shares	(1,966		)	(176,496		)
Dividends paid on ordinary shares	(40,922		)	(43,847		)
Distributions to non-controlling interests	(7,172		)	(3,008		)
Contributions from non-controlling interests	2,569			7,001
Proceeds from the issuance of debt	980,600			—
Deposit liabilities	(38,788		)	(17,270		)
Net cash provided by (used in) financing activities	$	896,093		$	(232,310	)
Effects of exchange rate changes on foreign currency cash	(47,397		)	7,177
Increase (decrease) in cash and cash equivalents	$	688,120		$	675,215
Cash and cash equivalents - beginning of period	2,521,814			1,800,832
Cash and cash equivalents - end of period	$	3,209,934		$	2,476,047

See accompanying Notes to Unaudited Consolidated Financial Statements

5

XL GROUP PLC

NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

1. Basis of Preparation and Consolidation

Unless the context otherwise indicates, references herein to the “Company” include XL Group plc, an Irish public limited company ("XL-Ireland"), and its consolidated subsidiaries.

These unaudited consolidated financial statements include the accounts of the Company and all of its subsidiaries and have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and disclosures required by GAAP for complete financial statements. In addition, the year-end balance sheet data was derived from audited financial statements but do not include all disclosures required by GAAP. In the opinion of management, these unaudited financial statements reflect all adjustments considered necessary for a fair statement of financial position and results of operations at the end of and 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 preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure about contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ materially from these estimates. For further information, see Item 8, Note 2(a), “Significant Accounting Policies – Basis of Preparation and Consolidation,” to the Consolidated Financial Statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2014.

To facilitate period-to-period comparisons, certain reclassifications have been made to prior period consolidated financial statement amounts to conform to current period presentation.

2. Significant Accounting Policies

(a) Recent Accounting Pronouncements

In February 2015, the Financial Accounting Standards Board ("FASB") issued an accounting standards update concerning consolidation of certain legal entities. Under this new guidance, all legal entities are required to evaluate whether they should consolidate certain legal entities. The guidance: (1) modifies the evaluation of whether limited partnerships and similar legal entities are variable interest entities ("VIEs") or voting interest entities; (2) eliminates the presumption that a general partner should consolidate a limited partnership; (3) affects the consolidation analysis of reporting entities that are involved with VIEs, particularly those that have fee arrangements and related party relationships; and (4) provides a scope exception from consolidation guidance for certain reporting entities. Upon adoption of the new guidance, differing requirements for performing a consolidation analysis under existing GAAP will be eliminated, and all reporting entities will now fall within the scope of the Accounting Standards Codification Subtopic 810-10, Consolidation-Overall, unless a specific exception applies. Under this Subtopic, there are only two primary models for determining whether consolidation is appropriate - a voting interest entity model, and a variable interest entity model. The guidance is effective for public business entities for annual periods ending after December 15, 2015, and interim and annual periods thereafter, with early adoption permitted. The Company is currently evaluating the impact of this guidance.

In April 2015, the FASB issued an accounting standards update concerning the presentation of deferred debt issuance costs in an entity's balance sheet. Under this new guidance, which is part of the FASB's initiative to reduce complexity in accounting standards while maintaining or improving the usefulness of the information provided to users of financial statements, it is required that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts. In addition, the guidance also requires that the amortization of such costs be reported as interest expense. The guidance is effective for public business entities for annual periods beginning after December 31, 2015, and interim periods within those fiscal years, with early adoption permitted for financial statements that have not been previously issued. This guidance is not expected to have a material impact on the Company's financial condition, results of operations or cash flows.

6

XL GROUP PLC

NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

3. Acquisition and Disposals

(a)    Catlin Acquisition

On May 1, 2015 (the "Acquisition Date"), the Company completed its acquisition (the "Acquisition") of the entire issued share capital of Catlin Group Limited ("Catlin") as contemplated by that certain Implementation Agreement, dated January 9, 2015 (the “Implementation Agreement”), by and among XL-Ireland, Green Holdings Limited, a direct, wholly-owned subsidiary of the Company (“Green Holdings”), and Catlin.

Pursuant to the terms of the Implementation Agreement, the Acquisition was implemented by way of a scheme of arrangement (the “Scheme”) under Section 99 of the Companies Act 1981 of Bermuda, as amended (the “Companies Act”), and sanctioned by the Supreme Court of Bermuda (the “Court”), immediately after which Catlin was merged with and into Green Holdings under Section 104H of the Companies Act, with Green Holdings as the surviving company, pursuant to the terms of that certain Merger Agreement, dated January 9, 2015 (the “Merger Agreement”), among XL-Ireland, Green Holdings and Catlin. The XL Shares issued in connection with the Acquisition were issued in reliance upon an exemption from registration under U.S. federal securities laws provided by Section 3(a)(10) of the Securities Act of 1933, as amended (the “Securities Act”).

Pursuant to the terms of the Implementation Agreement, XL-Ireland acquired each ordinary share of Catlin, par value $0.01 per share (“Catlin Shares”), for consideration per Catlin Share (the “Acquisition Consideration”) equal to 388 pence in cash and 0.130 of an XL-Ireland ordinary share, par value $0.01 per share (“XL Shares”), subject to the mix and match facility set forth in the Implementation Agreement. The newly-issued XL Shares are listed on the New York Stock Exchange.

XL-Ireland issued approximately 49.9 million XL Shares and paid approximately £1.49 billion in cash to the holders of Catlin Shares as Acquisition Consideration pursuant to the terms of the Scheme.

The foregoing description of the Implementation Agreement and the Merger Agreement is qualified in its entirety by reference to the full text of the Implementation Agreement and Merger Agreement, copies of which were filed on Form 8-K on January 9, 2015.

In connection with the Acquisition, on January 9, 2015, the Company announced that it was able to rely on £1.6 billion of debt to be provided under a bridge facility entered into by XLIT Ltd., a wholly-owned subsidiary of the Company ("XL-Cayman"), and arranged by Morgan Stanley Senior Funding, Inc. and Goldman Sachs Bank USA (the "Bridge Facility") for the purposes of discharging the cash component of the Acquisition consideration.

In addition, on January 9, 2015, the Company entered into deal contingent deliverable foreign exchange forwards ("FX Forwards") with Morgan Stanley Capital Services LLC and Goldman Sachs International. The purpose of the FX Forwards was to mitigate risk of foreign currency exposure related to the Acquisition. Following the close of the Acquisition, the FX Forwards were settled.

The calculation of the consideration transferred to acquire Catlin Shares is as follows:

(In thousands, except per share data)
Catlin Shares outstanding as of April 30, 2015 that will receive share consideration (including the dilutive effect of warrants)	384,118
Exchange ratio per the merger agreement	0.130
Share issuance to Catlin shareholders	49,935
Closing price per share on April 30, 2015 (1)	$	37.08
Share issuance consideration	$	1,851,601
Shares of Catlin common stock outstanding as of April 30, 2015 that will receive cash consideration (including the dilutive effect of warrants)	384,118
Cash price component, per share in GBP	£	3.88
Cash consideration, in GBP	£	1,490,377
Foreign exchange rate: GBP/USD on April 30, 2015	$	1.5349
Cash consideration	$	2,287,579
Total acquisition consideration	$	4,139,180

____________

(1) The closing market price of XL's common stock on the acquisition date represents the fair value of shares issued as part of the consideration transferred.

The Company financed the $2.29 billion cash consideration portion of the Acquisition by issuing $1.0 billion of subordinated debt, net proceeds of which were $980.6 million, and the remaining $1.31 billion by using cash and cash equivalents on hand. See Note 10, "Notes Payable and Debt and Financing Arrangements," for further information on the debt issuance. The Company terminated the commitments under the Bridge Facility as of April 8, 2015, due to a sufficient amount in escrow to discharge the cash consideration payable to Catlin shareholders in respect of the Acquisition.

7

XL GROUP PLC

NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

Due to the limited time subsequent to the Acquisition Date, the accounting for the Acquisition is not yet complete. The Company will file an amendment to its current report on Form 8-K filed on May 4, 2015 to provide pro forma financial statements and intends to include amounts recognized as of the Acquisition Date for the major classes of assets and liabilities assumed, pre-acquisition contingencies and goodwill in the Company's Quarterly Report on Form 10-Q for the second quarter of 2015.

The Company incurred certain acquisition, integration and financing costs associated with the transaction prior to the Acquisition Date. The Company has recorded $25.5 million of these costs for the three months ended March 31, 2015, of which $10.5 million has been included in Operating expenses and $15.0 million has been included in Interest expense. However, the assets acquired and the liabilities assumed from Catlin, the consideration paid to acquire Catlin, as well as the results of Catlin's operations are not reflected in the Unaudited Consolidated Financial Statements as of and for the three months ended March 31, 2015.

(b)    Sale of Strategic Operating Affiliate

On April 1, 2015, XL Re Ltd ("XL Re"), an indirect wholly-owned subsidiary of the Company, completed the previously announced sale of all of its shares in ARX Holding Corp. ("ARX") to The Progressive Corporation ("Progressive") pursuant to the terms of the Stock Purchase Agreement with Progressive. XL Re's shares in ARX represented approximately 40.6% of ARX's outstanding capital stock on a fully diluted basis at the time of the announcement. As of March 31, 2015, the Company recorded XL Re's shares in ARX as $222.6 million, included within Investments in Affiliates.

XL Re received approximately $560 million in proceeds from the transaction, which was based upon the consolidated tangible net book value of ARX and its subsidiaries as of December 31, 2014, and certain other factors. The Company will record a gain of approximately $337 million in the second quarter as a result of this transaction.

(c)    Sale of Life Reinsurance Subsidiary

On May 1, 2014, a wholly owned subsidiary of the Company, XL Insurance (Bermuda) Ltd (“XLIB”), entered into a sale and purchase agreement with GreyCastle Holdings Ltd. (“GreyCastle”) providing for the sale of 100% of the common shares of XLIB's wholly-owned subsidiary, XL Life Reinsurance (SAC) Ltd (“XLLR”), to GreyCastle for $570 million in cash (subsequent to the transaction, XLLR changed its name to GreyCastle Life Reinsurance (SAC) Ltd ("GCLR")). This transaction closed on May 30, 2014. As a result of the transaction, the Company ceded the majority of its life reinsurance business to GCLR via 100% quota share reinsurance (the "Life Retro Arrangements"). This transaction covered a substantial portion of our life reinsurance reserves. The Company ceased writing new life reinsurance contracts in 2009 and since that time has been managing the run-off of its life reinsurance operations ("Run-Off Life Operations"). The designated investments that support the Life Retro Arrangements on a funds withheld basis ("Life Funds Withheld Assets") are managed pursuant to agreed investment guidelines that meet the contractual commitments of the Company's ceding subsidiaries and applicable laws and regulations. All of the investment results associated with the Life Funds Withheld Assets ultimately accrue to GCLR.

The Run-Off Life Operations business, including the business subject to the transaction with GreyCastle, was previously reported within the Company’s Life operations segment. Subsequent to the transaction, the Company no longer considers the Life operations to be a separate operating segment and the results of the Run-Off Life Operations are reported within “Corporate and Other.” See Note 5, "Segment Information," for further information. In addition, certain securities within fixed maturities were reclassified from held to maturity to available for sale in conjunction with this transaction. See Note 6, "Investments," for further information.

All of the reclassified securities are included within Life Funds Withheld Assets, along with certain other available for sale securities as defined in the sale and purchase agreement. The Life Funds Withheld Assets are managed pursuant to agreed investment guidelines that meet the contractual commitments of the XL ceding companies and applicable laws and regulations. All of the investment results associated with the Life Funds Withheld Assets ultimately accrue to GCLR. Because the Company no longer shares in the risks and rewards of the underlying performance of the supporting invested assets, disclosures within the financial statement notes included herein separate the Life Funds Withheld Assets from the rest of the Company's investments.

As of May 30, 2014, gross future policy benefit reserves relating to the Life operations were approximately $5.2 billion. Subsequent to the completion of the GreyCastle transaction, the Company retained approximately $0.4 billion of these reserves, and recorded a reinsurance recoverable from GCLR of $4.8 billion. Under the terms of the transaction, the Company continues to own, on a funds withheld basis, assets supporting the Life Retro Arrangements consisting of cash, fixed maturity securities and accrued interest. Based upon the right of offset, the funds withheld liability owing to GCLR is recorded net of future policy benefit reserves recoverable, and is included within “Funds withheld on life retrocession arrangements (net of future policy benefit reserves recoverable)" on the unaudited consolidated balance sheets. The transaction resulted in an overall after-tax U.S. GAAP net loss of $621.3 million.

8

XL GROUP PLC

NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

As of March 31, 2015, gross future policy benefit reserves relating to the Run-Off Life Operations were approximately $4.4 billion, of which the Company retained approximately $0.4 billion, after consideration of its future policy benefit reserves recoverable from GCLR of approximately $3.9 billion. The net funds withheld liability included within “Funds withheld on life retrocession arrangements, net of future policy benefit reserves recoverable" was $1.1 billion. The Company continued to own $5.1 billion of assets supporting the Life Retro Arrangements.

The impact of the Life Retro Arrangements on the Company's results was as follows:

Impact of Life Retro Arrangements	Three months ended March 31,
(U.S. dollars in thousands)	2015
Underwriting profit (loss) (1)	$	603
Net investment income - Life Funds Withheld Assets	50,419
Net realized gains (losses) on investments sold - Life Funds Withheld Assets	52,738
Net unrealized gains (losses) on investments, Trading - Life Funds Withheld Assets	760
OTTI on investments - Life Funds Withheld Assets	(5,209		)
Exchange (gains) losses	3,684
Other income and expenses	(1,298		)
Net realized and unrealized gains (losses) on life retrocession embedded derivative and derivative instruments - Life Funds Withheld Assets	(229,367		)
Net income (loss)	$	(127,670	)
Change in net unrealized gains (losses) on investments - Life Funds Withheld Assets, net of tax	37,115
Change in adjustments related to future policy benefit reserves, net of tax	60,356
Change in cumulative translation adjustment - Life Funds Withheld Assets, net of tax	30,802
Total changes to other comprehensive income as a result of Life Retro Arrangements	$	128,273
Comprehensive income (loss)	$	603

____________

(1) The underwriting profit of $0.6 million relates to a premium adjustment during the three months ended March 31, 2015 relating to the Life Retro Arrangements transaction which was completed on May 30, 2014. Excluding this transaction, the impact to comprehensive income relating to the Life Retro Arrangements was nil for the three months ended March 31, 2015.

As shown in the table above, although the Company's net income (loss) is subject to variability related to the Life Retro Arrangements, there is minimal net impact on the Company's comprehensive income in any period. The life retrocession embedded derivative value includes the interest income, unrealized gains and losses, and realized gains and losses from sales on the Life Funds Withheld Assets subsequent to May 30, 2014.

9

XL GROUP PLC

NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

4. Fair Value Measurements

Fair value is defined as the amount that would be received for the sale of an asset or paid to transfer a liability (an exit price), in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants as of the measurement date. Applicable accounting guidance provides an established hierarchy for inputs used in measuring fair value that maximizes the use of observable inputs and minimizes the use of unobservable inputs by requiring that the most observable inputs be used when available. Observable inputs are inputs that market participants would use in valuing the asset or liability and are developed based on market data obtained from sources independent of the Company. Unobservable inputs are inputs that reflect the Company’s assumptions about the factors that market participants would use in valuing the asset or liability. Assets and liabilities are classified based on the lowest level of input that is significant to the fair value measurements. The Company reviews the fair value hierarchy classification on a quarterly basis. Changes in the observability of valuation inputs may result in a reclassification of levels for certain securities within the fair value hierarchy.

The fair values for available for sale investments are generally sourced from third parties. The fair value of fixed income securities is based upon quoted market values where available, “evaluated bid” prices provided by third party pricing services (“pricing services”) where quoted market values are not available, or by reference to broker quotes where pricing services do not provide coverage for a particular security. While the Company receives values for the majority of the investment securities it holds from pricing services, it is ultimately management’s responsibility to determine whether the values received and recorded in the financial statements are representative of appropriate fair value measurements.

The Company performs regular reviews of the prices received from its third party valuation sources to assess if the prices represent a reasonable estimate of the fair value. This process is completed by investment and accounting personnel who are independent of those responsible for obtaining the valuations. The approaches taken by the Company include, but are not limited to, annual reviews of the controls of the external parties responsible for sourcing valuations, which are subjected to automated tolerance checks, quarterly reviews of the valuation sources and dates, and monthly reconciliations between the valuations provided by our external parties and valuations provided by our third party investment managers at a portfolio level.

Where broker quotes are the primary source of the valuations, sufficient information regarding the specific inputs utilized by the brokers is generally not available to support a Level 2 classification. The Company obtains the majority of broker quoted values from third party investment managers who perform independent verifications of these valuations using pricing matrices based upon information gathered by market traders. In addition, for the majority of these securities, the Company compares the broker quotes to independent valuations obtained from third party pricing vendors, which may also consist of broker quotes, to assess if the prices received represent a reasonable estimate of the fair value.

As discussed in Note 3(c), “Acquisition and Disposals - Sale of Life Reinsurance Subsidiary,” under the Life Retro Arrangements, all of the investment results associated with the Life Funds Withheld Assets ultimately accrue to GCLR. Because the Company no longer shares in the risks and rewards of the underlying performance of the Life Funds Withheld Assets, the financial statements and accompanying notes included herein separately report the Life Funds Withheld Assets from the rest of the Company's investments.

For further information about the Company's fair value measurements, see Item 8, Note 2(b), “Significant Accounting Policies - Fair Value Measurements,” to the Consolidated Financial Statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2014.

10

XL GROUP PLC

NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

(a) Fair Value Summary

The following tables set forth the Company’s assets and liabilities that were accounted for at fair value as of March 31, 2015 and December 31, 2014 by level within the fair value hierarchy:

March 31, 2015 (U.S. dollars in thousands)	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Other Unobservable Inputs (Level 3)		Collateral and Counterparty Netting			Balance at March 31, 2015
Assets
Fixed maturities - Available for Sale ("AFS") - Excluding Life Funds Withheld Assets
U.S. Government and Government-Related/Supported	$	—	$	3,378,342	$	—	$	—		$	3,378,342
Corporate (1)	—		8,148,777		5,861		—			8,154,638
Residential mortgage-backed securities – Agency (“RMBS - Agency”)	—		3,709,514		1,820		—			3,711,334
Residential mortgage-backed securities – Non-Agency (“RMBS - Non-Agency”)	—		380,135		—		—			380,135
Commercial mortgage-backed securities (“CMBS”)	—		1,032,720		—		—			1,032,720
Collateralized debt obligations (“CDO”)	—		4,051		496,923		—			500,974
Other asset-backed securities	—		1,165,123		2,244		—			1,167,367
U.S. States and political subdivisions of the States	—		1,973,140		—		—			1,973,140
Non-U.S. Sovereign Government, Provincial, Supranational and Government-Related/Supported	—		4,093,771		—		—			4,093,771
Total fixed maturities - AFS - Excluding Funds Withheld Assets, at fair value	$	—	$	23,885,573	$	506,848	$	—		$	24,392,421
Equity securities, at fair value	497,496		285,975		—		—			783,471
Short-term investments, at fair value (1)(2)	—		168,862		—		—			168,862
Total investments AFS - Excluding Funds Withheld Assets	$	497,496	$	24,340,410	$	506,848	$	—		$	25,344,754
Fixed maturities - Life Funds Withheld Assets
U.S. Government and Government-Related/Supported	$	—	$	17,613	$	—	$	—		$	17,613
Corporate	—		2,746,226		—		—			2,746,226
RMBS – Agency	—		2,130		—		—			2,130
RMBS – Non-Agency	—		38,808		—		—			38,808
CMBS	—		159,257		—		—			159,257
Other asset-backed securities	—		244,140		—		—			244,140
Non-U.S. Sovereign Government, Provincial, Supranational and Government-Related/Supported	—		1,509,805		—		—			1,509,805
Total fixed maturities - AFS - Life Funds Withheld Assets, at fair value	$	—	$	4,717,979	$	—	$	—		$	4,717,979
Total investments - AFS, at fair value	$	497,496	$	29,058,389	$	506,848	$	—		$	30,062,733
Fixed maturities - trading securities ("Trading")
Corporate	—		137,438		—		—			137,438
Other asset-backed securities	—		1,939		—		—			1,939
Total fixed maturities - Trading, at fair value	$	—	$	139,377	$	—	$	—		$	139,377
Cash equivalents (3)	1,835,344		393,154		—		—			2,228,498
Cash equivalents - Life Funds Withheld Assets (3)	788		120,721		—		—			121,509
Other investments (4)	—		784,486		190,097		—			974,583
Other assets (5)	—		244,900		12,980		(587		)	257,293
Total assets accounted for at fair value	$	2,333,628	$	30,741,027	$	709,925	$	(587	)	$	33,783,993
Liabilities
Funds withheld on life retrocession arrangements (net of future policy benefit reserves recoverable) (6)	$	—	$	654,561	$	—	$	—		$	654,561
Financial instruments sold, but not yet purchased (7)	1,572		5,660		—		—			7,232
Other liabilities (5)	—		99,649		22,586		(587		)	121,648
Total liabilities accounted for at fair value	$	1,572	$	759,870	$	22,586	$	(587	)	$	783,441

11

XL GROUP PLC

NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

December 31, 2014 (U.S. dollars in thousands)	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Other Unobservable Inputs (Level 3)		Collateral and Counterparty Netting			Balance at December 31, 2014
Assets
Fixed maturities - AFS - Excluding Life Funds Withheld Assets
U.S. Government and Government-Related/Supported	$	—	$	2,171,953	$	—	$	—		$	2,171,953
Corporate (1)	—		8,772,479		5,894		—			$	8,778,373
Residential mortgage-backed securities – RMBS - Agency	—		3,726,666		1,910		—			$	3,728,576
Residential mortgage-backed securities – RMBS - Non-Agency	—		427,351		—		—			$	427,351
CMBS	—		1,052,544		—		—			$	1,052,544
CDO	—		4,076		687,958		—			$	692,034
Other asset-backed securities	—		1,060,005		5,288		—			$	1,065,293
U.S. States and political subdivisions of the States	—		2,021,272		—		—			$	2,021,272
Non-U.S. Sovereign Government, Provincial, Supranational and Government-Related/Supported	—		4,240,073		—		—			$	4,240,073
Total fixed maturities - AFS - Excluding Funds Withheld Assets, at fair value	$	—	$	23,476,419	$	701,050	$	—		$	24,177,469
Equity securities, at fair value	502,284		366,008		—		—			868,292
Short-term investments, at fair value (1)(2)	—		256,727		—		—			256,727
Total investments AFS - Excluding Funds Withheld Assets	$	502,284	$	24,099,154	$	701,050	$	—		$	25,302,488
Fixed maturities - Life Funds Withheld Assets
U.S. Government and Government-Related/Supported	$	—	$	18,724	$	—	$	—		$	18,724
Corporate	—		2,817,980		—		—			$	2,817,980
RMBS – Agency	—		3,782		—		—			$	3,782
RMBS – Non-Agency	—		85,335		—		—			$	85,335
CMBS	—		193,167		—		—			$	193,167
Other asset-backed securities	—		273,541		—		—			$	273,541
Non-U.S. Sovereign Government, Provincial, Supranational and Government-Related/Supported	—		1,789,036		—		—			$	1,789,036
Total fixed maturities - AFS - Life Funds Withheld Assets, at fair value	$	—	$	5,181,565	$	—	$	—		$	5,181,565
Total investments - AFS, at fair value	$	502,284	$	29,280,719	$	701,050	$	—		$	30,484,053
Fixed maturities - Trading
Corporate	—		1,171		—		—			$	1,171
Total fixed maturities - Trading, at fair value	$	—	$	1,171	$	—	$	—		$	1,171
Cash equivalents (3)	1,103,877		397,955		—		—			$	1,501,832
Cash equivalents - Life Funds Withheld Assets (3)	460		132,738		—		—			$	133,198
Other investments (4)	—		708,974		185,083		—			$	894,057
Other assets (5)	—		122,996		13,663		(696		)	$	135,963
Total assets accounted for at fair value	$	1,606,621	$	30,644,553	$	899,796	$	(696	)	$	33,150,274
Liabilities
Funds withheld on life retrocession arrangements (net of future policy benefit reserves recoverable) (6)	$	—	$	450,831	$	—	$	—		$	450,831
Financial instruments sold, but not yet purchased (7)	4,737		25,669		—		—			$	30,406
Other liabilities (5)	—		7,757		23,427		(696		)	$	30,488
Total liabilities accounted for at fair value	$	4,737	$	484,257	$	23,427	$	(696	)	$	511,725

____________

(1) Included are certain medium term notes supported primarily by pools of European investment grade credit with varying degrees of leverage. The notes had a fair value of $74.8 million and $79.9 million and an amortized cost of $63.8 million and $68.4 million as of March 31, 2015 and December 31, 2014, respectively. These notes allow the investor to participate in cash flows of the underlying bonds including certain residual values, which could serve to either decrease or increase the ultimate values of these notes.

(2) Short-term investments consist primarily of Corporate securities and U.S. and Non-U.S. Government and Government-Related/Supported securities.

12

XL GROUP PLC

NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

(3) Cash equivalents balances subject to fair value measurement include certificates of deposit and money market funds. Operating cash balances are not subject to recurring fair value measurement guidance.

(4) The Other investments balance excludes certain structured transactions including certain investments in project finance transactions, a payment obligation and liquidity financing provided to a structured credit vehicle as a part of a third party medium term note facility. These investments, which totaled $354.4 million as of March 31, 2015 and $354.4 million at December 31, 2014, are carried at amortized cost. For further information, see Item 8, Note 8, “Other Investments,” to the Consolidated Financial Statements included in our Annual Report on Form 10-K for the year ended December 31, 2014.

(5) Other assets and other liabilities include derivative instruments. The derivative balances included in each category are reported on a gross basis by level with a netting adjustment presented separately in the Collateral and Counterparty Netting column. The fair values of the individual derivative contracts are reported gross in their respective levels based on the fair value hierarchy. For further details regarding derivative fair values and associated collateral received or paid see Note 7, “Derivative Instruments,” to the Unaudited Consolidated Financial Statements.

(6) Funds withheld on life retrocession arrangements (net of future policy benefit reserves recoverable) include balances related to the life retrocession embedded derivative, under which all investment results associated with the Life Funds Withheld Assets related to the Life Retro Arrangements described in Note 3(c), ”Acquisition and Disposals - Sale of Life Reinsurance Subsidiary," accrue to the benefit of GCLR.

(7) Financial instruments sold, but not yet purchased, represent “short sales” and are included within “Payable for investments purchased” on the balance sheets.

(b) Level 3 Assets and Liabilities

The tables below present additional information about assets and liabilities measured at fair value on a recurring basis and for which Level 3 inputs were utilized to determine fair value. The tables present a reconciliation of the beginning and ending balances for the three months ended March 31, 2015 and 2014 for all financial assets and liabilities measured at fair value using significant unobservable inputs (Level 3) at March 31, 2015 and 2014, respectively. The tables do not include gains or losses that were reported in Level 3 in prior periods for assets that were transferred out of Level 3 prior to March 31, 2015 and 2014, respectively. Gains and losses for assets and liabilities classified within Level 3 in the table below may include changes in fair value that are attributable to both observable inputs (Levels 1 and 2) and unobservable inputs (Level 3). Further, it should be noted that the following tables do not take into consideration the effect of offsetting Level 1 and 2 financial instruments entered into by the Company that are either economically hedged by certain exposures to the Level 3 positions or that hedge the exposures in Level 3 positions.

In general, Level 3 assets include securities for which values were obtained from brokers where either significant inputs were utilized in determining the values that were difficult to corroborate with observable market data, or sufficient information regarding the specific inputs utilized by the broker was not available to support a Level 2 classification. Transfers into or out of Level 3 primarily arise as a result of the valuations utilized by the Company changing between either those provided by independent pricing services that do not contain significant unobservable inputs and other valuations sourced from brokers that are considered Level 3.

There were no significant transfers between Level 1 and Level 2 during each of the three months ended March 31, 2015 and 2014.

13

XL GROUP PLC

NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

	Level 3 Assets and Liabilities -Three Months Ended March 31, 2015
(U.S. dollars in thousands)	Corporate			RMBS - Agency			RMBS - Non Agency		CMBS			CDO
Balance, beginning of period	$	5,894		$	1,910		$	—	$	—		$	687,958
Realized gains (losses)	(1		)	—			—		—			36
Movement in unrealized gains (losses)	48			(1		)	—		—			5,555
Purchases and issuances	—			—			—		—			—
Sales	—			—			—		—			(155,085		)
Settlements	(80		)	(89		)	—		—			(41,541		)
Transfers into Level 3				—			—		—			—
Transfers out of Level 3	—			—			—		—			—
Fixed maturities to short-term investments classification change	—			—			—		—			—
Balance, end of period	$	5,861		$	1,820		$	—	$	—		$	496,923
Movement in total gains (losses) above relating to instruments still held at the reporting date	$	48		$	(1	)	$	—	$	—		$	2,668
	Level 3 Assets and Liabilities -Three Months Ended March 31, 2015
(U.S. dollars in thousands)	Other asset- backed securities			Non-US Sovereign Government, Provincial, Supranational and Government Related/Supported			Short-term investments		Other investments			Derivative Contracts - Net
Balance, beginning of period	$	5,288		$	—		$	—	$	185,083		$	(9,764	)
Realized gains (losses)	(1		)	—			—		1,302			—
Movement in unrealized gains (losses)	2			—			—		(1,827		)	158
Purchases and issuances	—			—			—		6,793			—
Sales	—			—			—		—
Settlements	(3,045		)	—			—		(1,254		)	—
Transfers into Level 3	—			—			—		—			—
Transfers out of Level 3	—			—			—		—			—
Fixed maturities to short-term investments classification change	—			—			—		—			—
Balance, end of period	$	2,244		$	—		$	—	$	190,097		$	(9,606	)
Movement in total gains (losses) above relating to instruments still held at the reporting date	$	—		$	—		$	—	$	(524	)	$	158

14

XL GROUP PLC

NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

	Level 3 Assets and Liabilities -Three Months Ended March 31, 2014
(U.S. dollars in thousands)	Corporate			RMBS - Agency			RMBS - Non Agency			CMBS			CDO
Balance, beginning of period	$	31,573		$	10,473		$	9		$	12,533		$	710,253
Realized gains (losses)	120			(1		)	—			2			1,581
Movement in unrealized gains (losses)	(2		)	1			2			(3		)	3,681
Purchases and issuances	1,434			—			—			—			27,814
Sales	—			—			—			—			(9,931		)
Settlements	(5,114		)	(573		)	—			(6,606		)	(14,571		)
Transfers into Level 3	—			—			—			—			—
Transfers out of Level 3	(23,629		)	(972		)	—			—			—
Fixed maturities to short-term investments classification change	—			—			—			—			—
Balance, end of period	$	4,382		$	8,928		$	11		$	5,926		$	718,827
Movement in total gains (losses) above relating to instruments still held at the reporting date	$	148		$	—		$	2		$	—		$	4,969
	Level 3 Assets and Liabilities -Three Months Ended March 31, 2014
(U.S. dollars in thousands)	Other asset- backed securities			Non-US Sovereign Government, Provincial, Supranational and Government Related/Supported			Short-term investments			Other investments			Derivative Contracts - Net
Balance, beginning of period	$	11,877		$	—		$	2,015		$	113,472		$	(29,110	)
Realized gains (losses)	(15		)	—			—			3,566			—
Movement in unrealized gains (losses)	62			—			(15		)	1,494			(3,386		)
Purchases and issuances	—			—			—			11,089			—
Sales	—			—			—			—			—
Settlements	(1,251		)	—			(2,000		)	(13,203		)	—
Transfers into Level 3	—			—			—			—			—
Transfers out of Level 3	—			—			—			—			—
Fixed maturities to short-term investments classification change	—			—			—			—			—
Balance, end of period	$	10,673		$	—		$	—		$	116,418		$	(32,496	)
Movement in total gains (losses) above relating to instruments still held at the reporting date	$	46		$	—		$	—		$	5,061		$	(3,386	)

(c) Fixed maturities and short-term investments

The Company’s Level 3 assets consist primarily of CDOs, for which non-binding broker quotes are the primary source of the valuations. Sufficient information regarding the specific inputs utilized by the brokers was not available to support a Level 2 classification. The Company obtains the majority of broker quotes for these CDOs from third party investment managers who perform independent verifications of these valuations using pricing matrices based upon information gathered by market traders. In addition, for the majority of these securities, the Company compares the broker quotes to independent valuations obtained from third party pricing vendors, which may also consist of broker quotes, to assess if the prices received represent a reasonable estimate of the fair value. Although the Company does not have access to the specific unobservable inputs that may have been used in the fair value measurements of the CDO securities provided by brokers, we would expect that the significant inputs considered are prepayment rates, probability of default, loss severity in the event of default, recovery rates, liquidity premium and reinvestment rates. Significant increases (decreases) in any of those inputs in isolation could result in a significantly different fair value measurement. Generally, a change in the assumption used for the probability of default is accompanied by a directionally similar change in the assumption used for the loss severity and a directionally opposite change in the assumption used for prepayment rates.

The remainder of the Level 3 assets relate primarily to private investment funds and certain derivative positions as described below.

15

XL GROUP PLC

NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

(d) Other investments

Included within the Other investments component of the Company’s Level 3 valuations are private investments and alternative fund investments where the Company is not deemed to have significant influence over the investee. The fair value of these investments is based upon net asset values received from the investment manager or general partner of the respective entity. The nature of the underlying investments held by the investee that form the basis of the net asset value include assets such as private business ventures and are such that significant Level 3 inputs are utilized in the determination of the individual underlying holding values and, accordingly, the fair value of the Company’s investment in each entity is classified within Level 3. The Company has not adjusted the net asset values received; however, management incorporates factors such as the most recent financial information received, annual audited financial statements and the values at which capital transactions with the investee take place when applying judgment regarding whether any adjustments should be made to the net asset value in recording the fair value of each position. Investments in alternative funds included in Other investments utilize strategies including arbitrage, directional, event driven and multi-style. These funds potentially have lockup and gate provisions which may limit redemption liquidity. For further details regarding the nature of Other investments and related features see Item 8, Note 8, “Other Investments,” to the Consolidated Financial Statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2014.

(e) Derivative instruments

Derivative instruments recorded within Other liabilities and classified within Level 3 include credit derivatives sold providing protection on senior tranches of structured finance transactions where the value is obtained directly from the investment bank counterparty and sufficient information regarding the inputs utilized in such valuation was not obtained to support a Level 2 classification and guaranteed minimum income benefits embedded within one reinsurance contract. The majority of inputs utilized in the valuations of these types of derivative contracts are considered Level 1 or Level 2; however, each valuation includes at least one Level 3 input that was significant to the valuation and, accordingly, the values are disclosed within Level 3.

The calculation of the change in fair value of the embedded derivative associated with the Life Retro Arrangements includes the interest income, realized and unrealized gains and losses on Life Funds Withheld Assets and certain related expenses related to the Life Funds Withheld Assets. The fair value of the embedded derivative is included in “Funds withheld on life retrocession arrangements, net of future policy benefit reserves recoverable” on the consolidated balance sheets. The fair value of the embedded derivative is considered a Level 2 valuation.

(f) Financial Instruments Not Carried at Fair Value

Authoritative guidance over disclosures about the fair value of financial instruments requires additional disclosure of fair value information for financial instruments not carried at fair value in both interim and annual reporting periods. Certain financial instruments, particularly insurance contracts, are excluded from these fair value disclosure requirements. The carrying values of cash and cash equivalents, accrued investment income, net receivable from investments sold, other assets, net payable for investments purchased, other liabilities and other financial instruments not included below approximated their fair values. The following table includes financial instruments for which the carrying value differs from the estimated fair values as of March 31, 2015 and December 31, 2014. All of these fair value estimates are considered Level 2 fair value measurements. The fair values for fixed maturities held to maturity are provided by third party pricing vendors and significant valuation inputs for all other items included were based upon market data obtained from sources independent of the Company, and are subject to the same control environment previously described.

	March 31, 2015				December 31, 2014
(U.S. dollars in thousands)	Carrying Value		Fair Value		Carrying Value		Fair Value
Financial Assets - Other investments, structured transactions	$	354,352	$	367,491	$	354,382	$	371,625
Deposit liabilities	$	1,211,203	$	1,528,570	$	1,245,367	$	1,543,761
Notes payable and debt	2,643,561		2,957,605		1,662,580		1,897,854
Financial Liabilities	$	3,854,764	$	4,486,175	$	2,907,947	$	3,441,615

The Company historically participated in structured transactions. Remaining structured transactions include cash loans supporting project finance transactions, a liquidity facility financing provided to structured project deals and an investment in a payment obligation with an insurance company. These transactions are carried at amortized cost. The fair value of these investments held by the Company is determined through use of internal models utilizing reported trades, benchmark yields, broker/dealer quotes, issuer spreads, two-sided markets, benchmark securities, bids, offers and reference data.

16

XL GROUP PLC

NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

Deposit liabilities include obligations under structured insurance and reinsurance transactions. For purposes of fair value disclosures, the Company determined the estimated fair value of the deposit liabilities by assuming a discount rate equal to the appropriate U.S. Treasury rate plus 33.4 basis points and 29.5 basis points as of March 31, 2015 and December 31, 2014, respectively. The discount rate incorporates the Company’s own credit risk into the determination of estimated fair value.

The fair values of the Company’s notes payable and debt outstanding were determined based on quoted market prices.

There are no significant concentrations of credit risk within the Company’s financial instruments as defined in the authoritative guidance over disclosures of fair value of financial instruments not carried at fair value, which excludes certain financial instruments, particularly insurance contracts.

5. Segment Information

The Company is organized into two operating segments: Insurance and Reinsurance. Subsequent to the transaction as described in Note 3(c), "Acquisition and Disposals - Sale of Life Reinsurance Subsidiary," GCLR reinsures the majority of the Company's life reinsurance business through the Life Retro Arrangements. The Company no longer considers the Life Operations to be a separate operating segment and the results of the Run-Off Life Operations are reported within “Corporate and Other.” The Company’s general investment and financing operations are also reflected in Corporate and Other. The run-off business subject to the Life Retro Arrangements was, prior to June 30, 2014, reported within the Company’s Life operations segment. Prior period information has been recast to reflect the current presentation.

The Company evaluates the performance of both the Insurance and Reinsurance segments based on underwriting profit. Other items of revenue and expenditure of the Company are not evaluated at the segment level. In addition, the Company does not allocate investment assets used to support its Property and Casualty (“P&C”) operations to the individual segments, except as noted below. Investment assets related to the Company’s Run-Off Life Operations and certain structured products included in the Insurance and Reinsurance segments are held in separately identified portfolios. As such, net investment income from these assets is included in the contribution from the applicable segment or in Corporate and Other. The following tables summarize the segment results for the three months ended March 31, 2015 and 2014:

17

XL GROUP PLC

NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

Three Months Ended March 31, 2015 (U.S. dollars in thousands, except ratios)	Insurance			Reinsurance			Total P&C			Corporate and Other (1)			Total
Gross premiums written	$	1,654,747		$	825,662		$	2,480,409		$	74,951		$	2,555,360
Net premiums written	1,089,108			747,635			1,836,743			14,506			1,851,249
Net premiums earned	962,306			357,188			1,319,494			14,506			1,334,000
Net losses and loss expenses	616,947			152,880			769,827			19,387			789,214
Acquisition costs	80,387			71,492			151,879			1,817			153,696
Operating expenses (2)	208,457			42,495			250,952			931			251,883
Underwriting profit (loss)	$	56,515		$	90,321		$	146,836		$	(7,629	)	$	139,207
Net investment income - excluding Life Funds Withheld Assets (3)							132,808			10,210			143,018
Net investment income - Life Funds Withheld Assets										50,419			50,419
Net results from structured products (4)	2,905			2,120			5,025			—			5,025
Net fee income and other (5)	(7,465		)	825			(6,640		)	132			(6,508		)
Net realized gains (losses) on investments - excluding Life Funds Withheld Assets							5,807			(1,205		)	4,602
Net realized gains (losses) on investments and net unrealized gains (losses) on investments, Trading - Life Funds Withheld Assets							—			48,289			48,289
Net realized and unrealized gains (losses) on derivative instruments							—			16,521			16,521
Net realized and unrealized gains (losses) on life retrocession embedded derivative and derivative instruments - Life Funds Withheld Assets							—			(229,367		)	(229,367		)
Net income (loss) from investment fund affiliates and operating affiliates (6)							—			57,997			57,997
Exchange (gains) losses							—			27,390			27,390
Corporate operating expenses							—			62,443			62,443
Contribution from P&C and Corporate and Other							283,836			(144,466		)	139,370
Interest expense (7)										41,481			41,481
Non-controlling interests										37,390			37,390
Income tax expense										24,218			24,218
Net income (loss) attributable to ordinary shareholders													$	36,281
Ratios – P&C operations: (8)
Loss and loss expense ratio	64.1		%	42.8		%	58.3		%
Underwriting expense ratio	30.0		%	31.9		%	30.6		%
Combined ratio	94.1		%	74.7		%	88.9		%

____________

(1) Corporate and Other includes other items of our revenue and expenditures that are not evaluated at the segment level for reporting purposes, as well as the Company's Run-Off Life Operations.

(2) Operating expenses of the segments exclude Corporate operating expenses, shown separately.

(3) Net investment income - excluding Life Funds Withheld Assets does not include net investment income related to the net results from structured products.

(4) The net results from P&C structured products include net investment income and interest expense of $15.1 million and $10.0 million, respectively.

(5) Net fee income and other includes operating expenses from the Company's loss prevention consulting services business.

(6) The Company generally records the income related to the alternative funds and to the private investment and operating fund affiliates on a one-month and three-month lag, respectively.

(7) Interest expense excludes interest expense related to deposit liabilities recorded in the Insurance and Reinsurance segments.

(8) Ratios are based on net premiums earned from P&C operations.

18

XL GROUP PLC

NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

Three Months Ended March 31, 2014 (U.S. dollars in thousands, except ratios)	Insurance			Reinsurance			Total P&C			Corporate and Other (1)			Total
Gross premiums written	$	1,570,926		$	857,713		$	2,428,639		$	84,297		$	2,512,936
Net premiums written	1,127,367			792,173			1,919,540			76,311			1,995,851
Net premiums earned	992,440			420,088			1,412,528			76,311			1,488,839
Net losses and loss expenses	639,193			192,312			831,505			113,587			945,092
Acquisition costs	105,000			87,235			192,235			7,179			199,414
Operating expenses (2)	203,053			40,861			243,914			3,188			247,102
Underwriting profit (loss)	$	45,194		$	99,680		$	144,874		$	(47,643	)	$	97,231
Net investment income - excluding Life Funds Withheld Assets (3)							143,527			70,892			214,419
Net results from structured products (4)	4,890			3,063			7,953			—			7,953
Net fee income and other (5)	(1,212		)	673			(539		)	45			(494		)
Net realized gains (losses) on investments - excluding Life Funds Withheld Assets							17,666			1,563			19,229
Net realized and unrealized gains (losses) on derivative instruments							—			1,810			1,810
Net income (loss) from investment fund affiliates and operating affiliates (6)							—			79,588			79,588
Exchange (gains) losses							—			10,441			10,441
Corporate operating expenses							—			51,338			51,338
Contribution from P&C and Corporate and Other							313,481			44,476			357,957
Interest expense (7)										32,160			32,160
Non-controlling interests										35,759			35,759
Income tax expense										34,321			34,321
Net income (loss) attributable to ordinary shareholders													$	255,717
Ratios – P&C operations: (8)
Loss and loss expense ratio	64.4		%	45.8		%	58.9		%
Underwriting expense ratio	31.0		%	30.5		%	30.8		%
Combined ratio	95.4		%	76.3		%	89.7		%

____________

(1) Corporate and Other includes other items of our revenue and expenditures that are not evaluated at the segment level for reporting purposes, as well as the Company's Run-Off Life Operations and Life Funds Withheld Assets since the sale of XLLR did not occur until May 1, 2014.

(2) Operating expenses of the segments exclude Corporate operating expenses, shown separately.

(3) Net investment income does not include net investment income related to the net results from structured products.

(4) The net results from P&C structured products include net investment income and interest expense of $18.8 million and $10.8 million, respectively.

(5) Net fee income and other includes operating expenses from the Company's loss prevention consulting services business.

(6) The Company generally records the income related to the alternative funds and to the private investment and operating fund affiliates on a one-month and three-month lag, respectively.

(7) Interest expense excludes interest expense related to deposit liabilities recorded in the Insurance and Reinsurance segments.

(8) Ratios are based on net premiums earned from P&C operations.

19

XL GROUP PLC

NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

The following tables summarize the Company’s net premiums earned by line of business for the three months ended March 31, 2015 and 2014:

Three Months Ended March 31, 2015 (U.S. dollars in thousands)	Insurance		Reinsurance		Corporate and Other			Total
P&C Operations:
Professional	$	266,411	$	35,008	$	—		$	301,419
Casualty	309,335		58,208		—			367,543
Property catastrophe	—		94,073		—			94,073
Property	128,241		131,224		—			259,465
Marine, energy, aviation and satellite	—		18,075		—			18,075
Specialty	184,724		—		—			184,724
Other (1)	73,595		20,600		—			94,195
Total P&C Operations	$	962,306	$	357,188	$	—		$	1,319,494
Corporate and Other:
Run-off Life operations - Annuity	$	—	$	—	$	(1	)	$	(1	)
Run-off Life operations - Other Life	—		—		14,507			14,507
Total Corporate and Other	$	—	$	—	$	14,506		$	14,506
Total	$	962,306	$	357,188	$	14,506		$	1,334,000
Three Months Ended March 31, 2014 (U.S. dollars in thousands)	Insurance		Reinsurance		Corporate and Other			Total
P&C Operations:
Professional	$	275,427	$	50,104	$	—		$	325,531
Casualty	344,004		76,721		—			420,725
Property catastrophe	—		108,437		—			108,437
Property	139,733		135,239		—			274,972
Marine, energy, aviation and satellite	—		23,514		—			23,514
Specialty	176,909		—		—			176,909
Other (1)	56,367		26,073		—			82,440
Total P&C Operations	$	992,440	$	420,088	$	—		$	1,412,528
Corporate and Other:
Run-off Life operations - Annuity	$	—	$	—	$	31,797		$	31,797
Run-off Life operations - Other Life	—		—		44,514			44,514
Total Corporate and Other	$	—	$	—	$	76,311		$	76,311
Total	$	992,440	$	420,088	$	76,311		$	1,488,839

____________

(1) Other within the Insurance segment includes: excess and surplus, programs, surety, structured indemnity and certain discontinued lines. Other within the Reinsurance segment includes: whole account contracts, accident and health and other lines.

20

XL GROUP PLC

NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

6. Investments

(a) Fixed Maturities, Short-Term Investments and Equity Securities

Classification of Fixed Income Securities

During the second quarter of 2014, fixed maturities with a carrying value of $2.8 billion were reclassified from held to maturity ("HTM") to AFS in conjunction with the sale of XLLR as discussed in Note 3(c), “Acquisition and Disposals - Sale of Life Reinsurance Subsidiary." As a result, the Company no longer holds HTM securities. Gross unrealized gains and gross unrealized losses, net of tax, of $424.9 million and nil, respectively, related to these securities were recognized in other comprehensive income on the date of transfer. For certain annuity contracts that are subject to the Life Retro Arrangements, policy benefit reserves were historically increased for the impact of changes in unrealized gains on investments supporting such contracts as if the gains had been realized, with a corresponding entry to other comprehensive income ("Shadow Adjustments"). In conjunction with the sale of XLLR and the related reclassification of securities from HTM to AFS, the Company recorded an additional gross charge of $440.5 million, net of tax, as a reduction of comprehensive income for such Shadow Adjustments on the date of the transfer. See Note 15, "Accumulated Other Comprehensive Income (Loss)," for further information.

All of the reclassified securities are included within the Life Funds Withheld Assets, along with certain other available for sale securities as defined in the sale and purchase agreement. The Life Funds Withheld Assets are managed pursuant to agreed investment guidelines that meet the contractual commitments of the XL ceding companies and applicable laws and regulations. All of the investment results associated with the Life Funds Withheld Assets ultimately accrue to GCLR. Because the Company no longer shares in the risks and rewards of the underlying performance of the Life Funds Withheld Assets, disclosures within the financial statements and accompanying notes included herein separate the Life Funds Withheld Assets from the rest of the Company's investments.

Amortized Cost and Fair Value Summary

The cost (amortized cost for fixed maturities and short-term investments), fair value, gross unrealized gains and gross unrealized (losses), including OTTI recorded in accumulated other comprehensive income (“AOCI”) of the Company’s AFS investments as of March 31, 2015 and December 31, 2014, were as follows:

21

XL GROUP PLC

NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

March 31, 2015 (U.S. dollars in thousands)	Cost or Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value		Non-credit Related OTTI (1)
Fixed maturities - AFS - Excluding Life Funds Withheld Assets
U.S. Government and Government-Related/Supported	$	3,299,458	$	87,025	$	(8,141	)	$	3,378,342	$	—
Corporate (2)	7,806,607		398,357		(50,326		)	8,154,638		(3,309		)
RMBS – Agency	3,585,638		131,468		(5,772		)	3,711,334		—
RMBS – Non-Agency	368,317		29,770		(17,952		)	380,135		(58,364		)
CMBS	1,010,518		25,603		(3,401		)	1,032,720		(1,801		)
CDO	520,929		1,675		(21,630		)	500,974		(1,648		)
Other asset-backed securities (2)	1,134,928		41,386		(8,947		)	1,167,367		(1,662		)
U.S. States and political subdivisions of the States	1,842,561		131,843		(1,264		)	1,973,140		—
Non-U.S. Sovereign Government, Provincial, Supranational and Government-Related/Supported	4,010,656		154,829		(71,714		)	4,093,771		—
Total fixed maturities - AFS - Excluding Life Funds Withheld Assets	$	23,579,612	$	1,001,956	$	(189,147	)	$	24,392,421	$	(66,784	)
Total short-term investments - Excluding Life Funds Withheld Assets	$	169,903	$	149	$	(1,190	)	$	168,862	$	—
Total equity securities - Excluding Life Funds Withheld Assets	$	665,682	$	132,731	$	(14,942	)	$	783,471	$	—
Total investments - AFS - Excluding Life Funds Withheld Assets	$	24,415,197	$	1,134,836	$	(205,279	)	$	25,344,754	$	(66,784	)
Fixed maturities - AFS - Life Funds Withheld Assets
U.S. Government and Government-Related/Supported	$	13,163	$	4,450	$	—		$	17,613	$	—
Corporate (2)	2,277,295		468,931		—			2,746,226		—
RMBS – Agency	1,641		489		—			2,130		—
RMBS – Non-Agency	32,880		5,928		—			38,808		—
CMBS	131,830		27,427		—			159,257		—
Other asset-backed securities	209,714		34,426		—			244,140		—
Non-U.S. Sovereign Government, Provincial, Supranational and Government-Related/Supported	1,123,966		385,839		—			1,509,805		—
Total fixed maturities - AFS - Life Funds Withheld Assets	$	3,790,489	$	927,490	$	—		$	4,717,979	$	—
Total investments - AFS	$	28,205,686	$	2,062,326	$	(205,279	)	$	30,062,733	$	(66,784	)
Fixed maturities - Trading - Life Funds Withheld Assets								Amortized Cost		Fair Value
Corporate								$	136,681	$	137,438
Other asset-backed securities								1,966		1,939
Total investments - Trading - Life Funds Withheld Assets								$	138,647	$	139,377

___________

(1) Represents the non-credit component of OTTI losses, adjusted for subsequent sales of securities. It does not include the change in fair value subsequent to the date an impairment was recorded.

(2) Included are certain medium term notes supported primarily by pools of European investment grade credit with varying degrees of leverage. The notes have a fair value of $74.8 million and an amortized cost of $63.8 million. These notes allow the investor to participate in cash flows of the underlying bonds including certain residual values, which could serve to either decrease or increase the ultimate values of these notes.

22

XL GROUP PLC

NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

December 31, 2014 (U.S. dollars in thousands)	Cost or Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value		Non-credit Related OTTI (1)
Fixed maturities - AFS - Excluding Life Funds Withheld Assets
U.S. Government and Government-Related/Supported	$	2,100,851	$	77,889	$	(6,787	)	$	2,171,953	$	—
Corporate (2)	8,462,130		365,805		(49,562		)	8,778,373		(3,309		)
RMBS – Agency	3,625,171		114,188		(10,783		)	3,728,576		—
RMBS – Non-Agency	404,398		41,108		(18,155		)	427,351		(67,918		)
CMBS	1,033,819		23,987		(5,262		)	1,052,544		(2,033		)
CDO	717,544		1,659		(27,169		)	692,034		(1,663		)
Other asset-backed securities (2)	1,028,528		42,810		(6,045		)	1,065,293		(1,797		)
U.S. States and political subdivisions of the States	1,892,566		129,910		(1,204		)	2,021,272		—
Non-U.S. Sovereign Government, Provincial, Supranational and Government-Related/Supported	4,162,425		139,484		(61,836		)	4,240,073		—
Total fixed maturities - AFS - Excluding Life Funds Withheld Assets	$	23,427,432	$	936,840	$	(186,803	)	$	24,177,469	$	(76,720	)
Total short-term investments - Excluding Life Funds Withheld Assets	$	257,221	$	49	$	(543	)	$	256,727	$	—
Total equity securities - Excluding Life Funds Withheld Assets	$	763,833	$	130,689	$	(26,230	)	$	868,292	$	—
Total investments - AFS - Excluding Life Funds Withheld Assets	$	24,448,486	$	1,067,578	$	(213,576	)	$	25,302,488	$	(76,720	)
Fixed maturities - AFS - Life Funds Withheld Assets
U.S. Government and Government-Related/Supported	$	14,866	$	3,858	$	—		$	18,724	$	—
Corporate (2)	2,407,849		410,131		—			2,817,980		—
RMBS – Agency	3,301		481		—			3,782		—
RMBS – Non-Agency	71,075		14,260		—			85,335		—
CMBS	168,886		24,281		—			193,167		—
Other asset-backed securities	238,168		35,373		—			273,541		—
Non-U.S. Sovereign Government, Provincial, Supranational and Government-Related/Supported	1,397,194		391,842		—			1,789,036		—
Total fixed maturities - AFS - Life Funds Withheld Assets	$	4,301,339	$	880,226	$	—		$	5,181,565	$	—
Total investments - AFS	$	28,749,825	$	1,947,804	$	(213,576	)	$	30,484,053	$	(76,720	)
Fixed maturities - Trading - Life Funds Withheld Assets								Amortized Cost		Fair Value
Corporate								$	1,180	$	1,171
Total investments - Trading - Life Funds Withheld Assets								$	1,180	$	1,171

____________

(1) Represents the non-credit component of OTTI losses, adjusted for subsequent sales of securities. It does not include the change in fair value subsequent to the date an impairment was recorded.

(2) Included are certain medium term notes supported primarily by pools of European investment grade credit with varying degrees of leverage. The notes have a fair value of $79.9 million and an amortized cost of $68.4 million. These notes allow the investor to participate in cash flows of the underlying bonds including certain residual values, which could serve to either decrease or increase the ultimate values of these notes.

As of March 31, 2015 and December 31, 2014, approximately 2.8% and 3.0%, respectively, of the Company's fixed income investment portfolio at fair value, excluding Life Funds Withheld Assets, was invested in securities that were below investment grade or not rated. Approximately 23.1% and 24.9% of the gross unrealized losses in the Company's fixed income investment portfolio, excluding Life Funds Withheld Assets, as of March 31, 2015 and December 31, 2014, respectively, related to securities that were below investment grade or not rated.

23

XL GROUP PLC

NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

Contractual Maturities Summary

The contractual maturities of AFS fixed income securities at March 31, 2015 and December 31, 2014 are shown below. Actual maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties.

	March 31, 2015				December 31, 2014
(U.S. dollars in thousands)	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Fixed maturities - AFS - Excluding Life Funds Withheld Assets
Due less than one year	$	1,770,647	$	1,781,224	$	1,972,224	$	1,980,429
Due after 1 through 5 years	9,698,659		9,923,517		8,919,037		9,113,651
Due after 5 through 10 years	4,049,907		4,226,001		4,232,396		4,412,569
Due after 10 years	1,440,069		1,669,149		1,494,315		1,705,022
	$	16,959,282	$	17,599,891	$	16,617,972	$	17,211,671
RMBS – Agency	3,585,638		3,711,334		3,625,171		3,728,576
RMBS – Non-Agency	368,317		380,135		404,398		427,351
CMBS	1,010,518		1,032,720		1,033,819		1,052,544
CDO	520,929		500,974		717,544		692,034
Other asset-backed securities	1,134,928		1,167,367		1,028,528		1,065,293
Total mortgage and asset-backed securities	$	6,620,330	$	6,792,530	$	6,809,460	$	6,965,798
Total fixed maturities - AFS - Excluding Life Funds Withheld Assets	$	23,579,612	$	24,392,421	$	23,427,432	$	24,177,469
Fixed maturities - AFS - Life Funds Withheld Assets
Due less than one year	$	97,637	$	107,530	$	117,048	$	125,326
Due after 1 through 5 years	626,869		676,507		638,526		685,787
Due after 5 through 10 years	798,923		933,986		1,004,698		1,165,348
Due after 10 years	1,890,995		2,555,621		2,059,637		2,649,279
	$	3,414,424	$	4,273,644	$	3,819,909	$	4,625,740
RMBS – Agency	1,641		2,130		3,301		3,782
RMBS – Non-Agency	32,880		38,808		71,075		85,335
CMBS	131,830		159,257		168,886		193,167
Other asset-backed securities	209,714		244,140		238,168		273,541
Total mortgage and asset-backed securities	$	376,065	$	444,335	$	481,430	$	555,825
Total fixed maturities - AFS - Life Funds Withheld Assets	$	3,790,489	$	4,717,979	$	4,301,339	$	5,181,565
Total fixed maturities - AFS	$	27,370,101	$	29,110,400	$	27,728,771	$	29,359,034
Fixed maturities - Trading - Life Funds Withheld Assets
Due less than one year	$	—	$	—	$	—	$	—
Due after 1 through 5 years	64,739		64,733		—		—
Due after 5 through 10 years	5,188		5,131		1,180		1,171
Due after 10 years	66,754		67,574		—		—
	$	136,681	$	137,438	$	1,180	$	1,171
Other asset-backed securities	1,966		1,939		—		—
Total mortgage and asset-backed securities	$	1,966	$	1,939	$	—	$	—
Total fixed maturities - Trading - Life Funds Withheld Assets	$	138,647	$	139,377	$	1,180	$	1,171

OTTI Considerations

Under final authoritative accounting guidance, a debt security for which amortized cost exceeds fair value is deemed to be other-than-temporarily impaired if it meets either of the following conditions: (a) the Company intends to sell, or it is more likely than not that the Company will be required to sell, the security before a recovery in value, or (b) the Company does not expect to recover the entire amortized cost basis of the security. Other than in a situation in which the Company has the intent to sell a debt security or more likely than not will be required to sell a debt security, the amount of the OTTI related to a credit loss on the security is recognized in earnings, and the amount of the OTTI related to other factors (e.g., interest rates, market conditions, etc.) is recorded as a component of OCI. The net amount recognized in earnings (“credit loss impairment”) represents the difference between the amortized cost of the security and the net present value of its projected future cash flows discounted at the effective interest rate implicit in the debt security prior to impairment (“NPV”). The remaining difference

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XL GROUP PLC

NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

between the security's NPV and its fair value is recognized in OCI. Subsequent changes in the fair value of these securities are included in OCI unless a further impairment is deemed to have occurred.

In the scenario where the Company has the intent to sell a security in which its amortized cost exceeds its fair value, or it is more likely than not that it will be required to sell such a security, the entire difference between the security's amortized cost and its fair value is recognized in earnings.

The determination of credit loss impairment is based on detailed analyses of underlying cash flows and other considerations. Such analyses require the use of certain assumptions to develop the estimated performance of underlying collateral. Key assumptions used include, but are not limited to, items such as RMBS default rates based on collateral duration in arrears, severity of losses on default by collateral class, collateral reinvestment rates and expected future general corporate default rates.

Factors considered for all securities on a quarterly basis in determining that a gross unrealized loss is not other-than-temporarily impaired include management's consideration of current and near term liquidity needs and other available sources of funds, an evaluation of the factors and time necessary for recovery and an assessment of whether the Company has the intention to sell or considers it more likely than not that it will be forced to sell a security.

Pledged Assets

Certain of the Company's invested assets are held in trust and pledged in support of insurance and reinsurance liabilities as well as credit facilities. Such pledges are largely required by the Company's operating subsidiaries that are “non-admitted” under U.S. state insurance regulations, in order for the U.S. cedant to receive statutory credit for reinsurance. Also, certain deposit liabilities and annuity contracts require the use of pledged assets. As of March 31, 2015, the Company had $15.4 billion in pledged assets which includes $1.0 billion of cash, cash equivalents and U.S. government securities held in escrow in relation to the Acquisition and the associated Bridge Facility. See "Note 3(a), "Acquisition and Disposals - Catlin Acquisition," for further information on the Bridge Facility. At December 31, 2014, the Company had $15.2 billion in pledged assets.

(b) Gross Unrealized Losses

The following is an analysis of how long the AFS securities as of March 31, 2015 and December 31, 2014 had been in a continual unrealized loss position:

	Less than 12 months					Equal to or greater than 12 months
March 31, 2015 (U.S. dollars in thousands)	Fair Value		Gross Unrealized Losses			Fair Value		Gross Unrealized Losses
Fixed maturities and short-term investments - AFS
U.S. Government and Government-Related/Supported	$	249,646	$	(3,541	)	$	143,891	$	(4,619	)
Corporate	688,725		(40,874		)	190,397		(9,730		)
RMBS – Agency	177,627		(914		)	279,354		(4,858		)
RMBS – Non-Agency	51,876		(1,815		)	188,932		(16,137		)
CMBS	120,862		(393		)	109,324		(3,008		)
CDO	92,517		(294		)	346,372		(21,336		)
Other asset-backed securities	92,193		(6,219		)	37,357		(2,728		)
U.S. States and political subdivisions of the States	55,707		(695		)	15,310		(569		)
Non-U.S. Sovereign Government, Provincial, Supranational and Government-Related/Supported	681,300		(39,085		)	322,974		(33,522		)
Total fixed maturities and short-term investments - AFS	$	2,210,453	$	(93,830	)	$	1,633,911	$	(96,507	)
Total equity securities	$	119,625	$	(14,942	)	$	—	$	—

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XL GROUP PLC

NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

	Less than 12 months					Equal to or greater than 12 months
December 31, 2014 (U.S. dollars in thousands)	Fair Value		Gross Unrealized Losses			Fair Value		Gross Unrealized Losses
Fixed maturities and short-term investments - AFS
U.S. Government and Government-Related/Supported	$	251,091	$	(1,196	)	$	342,890	$	(5,603	)
Corporate	1,337,470		(33,881		)	424,221		(15,754		)
RMBS – Agency	134,535		(220		)	512,652		(10,563		)
RMBS – Non-Agency	45,378		(1,358		)	202,700		(16,797		)
CMBS	78,356		(385		)	169,065		(4,877		)
CDO	249,803		(2,666		)	414,516		(24,503		)
Other asset-backed securities	143,044		(2,813		)	57,544		(3,232		)
U.S. States and political subdivisions of the States	32,187		(210		)	63,695		(994		)
Non-U.S. Sovereign Government, Provincial, Supranational and Government-Related/Supported	624,346		(19,043		)	558,422		(43,251		)
Total fixed maturities and short-term investments - AFS	$	2,896,210	$	(61,772	)	$	2,745,705	$	(125,574	)
Total equity securities	$	191,193	$	(26,230	)	$	—	$	—

The Company had gross unrealized losses totaling $205.3 million on 1,347 securities out of a total of 7,586 held as of March 31, 2015 in its AFS - Excluding Life Funds Withheld Assets portfolio, which either it considers to be temporarily impaired or with respect to which it reflects non-credit losses on other-than-temporarily impaired assets. Individual security positions comprising this balance have been evaluated by management to determine the severity of these impairments and whether they should be considered other-than-temporary. Management believes it is more likely than not that the issuer will be able to fund sufficient principal and interest payments to support the current amortized cost.

Management, in its assessment of whether securities in a gross unrealized loss position are temporarily impaired, as described above, considers the significance of the impairments. As of March 31, 2015, the AFS - Excluding Life Funds Withheld Assets portfolio included structured credit securities with gross unrealized losses of $9.0 million, which had a fair value of $6.1 million, and a cumulative fair value decline of greater than 50% of amortized cost. All of these securities are mortgage and asset-backed securities.

(c) Net Realized Gains (Losses)

The following represents an analysis of net realized gains (losses) on investments:

Net Realized Gains (Losses) on Investments	Three months ended March 31,
(U.S. dollars in thousands)	2015			2014
Net realized gains (losses) on investments - excluding Life Funds Withheld Assets:
Gross realized gains	$	62,300		$	51,213
Gross realized losses on investments sold	(47,122		)	(28,257		)
OTTI on investments, net of amounts transferred to other comprehensive income	(10,576		)	(3,727		)
	$	4,602		$	19,229
Net realized gains (losses) on investments and net unrealized gains (losses) on investments, Trading - Life Funds Withheld Assets:
Gross realized gains	$	53,128		$	—
Gross realized losses on investments sold	(390		)	—
OTTI on investments, net of amounts transferred to other comprehensive income	(5,209		)	—
Net unrealized gains (losses) on trading securities	$	760		$	—
	$	48,289		$	—
Total net realized gains (losses) on investments	$	52,891		$	19,229

The significant components of the net impairment charges of $10.6 million for investments excluding Life Funds Withheld Assets for the three months ended March 31, 2015 were:

▪ $7.6 million related to certain high yield securities which we no longer intend to hold for a period sufficient to recover their fair value to amortized cost.

• $0.3 million related to certain equities that were in a loss position for more than 11 months.

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XL GROUP PLC

NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

• $0.1 million for structured securities, principally non-Agency RMBS, where we determined that the likely recovery on these securities was below the carrying value and, accordingly, recorded an impairment of the securities to the discounted value of the cash flows expected to be received on these securities.

• $2.6 million related to foreign exchange losses.

The following table sets forth the amount of credit loss impairments on fixed income securities held by the Company for which a portion of the OTTI loss was recognized in OCI, as of the dates or for the periods indicated and the corresponding changes in such amounts.

Credit Loss Impairments	Three months ended March 31,
(U.S. dollars in thousands)	2015			2014
Opening balance as of beginning of indicated period	$	131,942		$	174,805
Credit loss impairment recognized in the current period on securities not previously impaired	7,560			12
Credit loss impairments previously recognized on securities which matured, paid down, prepaid or were sold during the period	(28,539		)	(3,348		)
Additional credit loss impairments recognized in the current period on securities previously impaired	141			2,261
Accretion of credit loss impairments previously recognized due to an increase in cash flows expected to be collected	(2,646		)	(2,347		)
Balance as of March 31,	$	108,458		$	171,383

During the three months ended March 31, 2015 and 2014, the $28.5 million and $3.3 million, respectively, credit loss impairments previously recognized on securities that matured, or were paid down, prepaid or sold, included $27.3 million and $2.7 million, respectively, of non-Agency RMBS.

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XL GROUP PLC

NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

7. Derivative Instruments

The Company enters into derivative instruments for both risk management and investment purposes. The Company is exposed to potential loss from various market risks, and manages its market risks based on guidelines established by management and the Risk and Finance Committee of the Company's Board of Directors. The Company recognizes all derivatives as either assets or liabilities on the balance sheets and measures those instruments at fair value, with the changes in fair value of derivatives shown in the consolidated statement of income as “Net realized and unrealized gains (losses) on derivative instruments” unless the derivatives are designated as hedging instruments. The accounting for derivatives that are designated as hedging instruments is described in Item 8, Note 2(h), “Significant Accounting Policies - Derivative Instruments,” to the Consolidated Financial Statements included in the Company's Annual Report on Form 10-K for the year ended December 31, 2014.

The following table summarizes information on the location and gross amounts of derivative fair values contained in the consolidated balance sheets as of March 31, 2015 and December 31, 2014:

	March 31, 2015								December 31, 2014
(U.S. dollars in thousands)	Asset Derivative Notional Amount		Asset Derivative Fair Value (1)		Liability Derivative Notional Amount		Liability Derivative Fair Value (1)		Asset Derivative Notional Amount		Asset Derivative Fair Value (1)		Liability Derivative Notional Amount		Liability Derivative Fair Value (1)
Derivatives designated as hedging instruments:
Foreign exchange contracts	$	204,811	$	38,376	$	204,811	$	26,505	$	2,300,609	$	121,862	$	302,211	$	2,936
Total derivatives designated as hedging instruments	$	204,811	$	38,376	$	204,811	$	26,505	$	2,300,609	$	121,862	$	302,211	$	2,936
Derivatives not designated as hedging instruments:
Investment Related Derivatives:
Interest rate exposure	$	264,527	$	224	$	13,033	$	65	$	394,597	$	206	$	20,782	$	51
Foreign exchange exposure	23,400		498		190,368		7,709		7,385		403		288,376		4,724
Credit exposure	2,408		205		14,270		9,836		2,408		165		14,270		9,836
Financial market exposure	33,362		513		33,136		63		46,145		360		33,670		34
Other Non-Investment Derivatives:
Foreign exchange contracts	2,304,633		205,083		2,366,968		65,294		—		—		—		—
Credit exposure	31,060		218		—		—		31,060		60		—		—
Guaranteed minimum income benefit contract	45,658		12,763		45,658		12,763		46,249		13,603		46,249		13,603
Modified coinsurance funds withheld contracts (2)	65,530		—		5,045,540		—		64,947		—		5,401,278		—
Total derivatives not designated as hedging instruments	$	2,770,578	$	219,504	$	7,708,973	$	95,730	$	592,791	$	14,797	$	5,804,625	$	28,248

____________

(1) Derivative instruments in an asset or liability position are included within Other assets or Other liabilities, respectively, in the balance sheets on a net basis where the Company has both a legal right of offset and the intention to settle the contracts on a net basis.

(2) The fair value movements in derivative assets and liabilities relating to modified coinsurance funds withheld contracts are included within the associated asset or liability at each period end on the face of the balance sheets. Notional amounts associated with reinsurance agreements under which the Company assumes reinsurance risk are recorded as asset derivative notional amounts. Notional amounts associated with the Life Retro Arrangements under which the Company cedes reinsurance risk are recorded as liability derivative notional amounts. Included in the liability derivative notional amount as of March 31, 2015 is the cumulative net realized and unrealized loss on life retrocession embedded derivative of $654.6 million.

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XL GROUP PLC

NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

The following table summarizes information on the gross and net amounts of derivative fair values and associated collateral received related to derivative assets, or paid related to derivative liabilities, reported in other assets and or other liabilities within our consolidated balance sheets as of March 31, 2015 and December 31, 2014:

							Gross Amounts Not Offset in the Balance Sheets
March 31, 2015 (U.S. dollars in thousands)	Gross Amounts Recognized in the Balance Sheets		Gross Amounts Offset in the Balance Sheets		Net Amounts in the Balance Sheets		Financial Instruments		Cash Collateral		Net Amounts
Derivative Assets	$	257,880	$	587	$	257,293	$	—	$	183,675	$	73,618
Derivative Liabilities	$	122,235	$	587	$	121,648	$	—	$	—	$	121,648
December 31, 2014 (U.S. dollars in thousands)
Derivative Assets	$	136,659	$	696	$	135,963	$	—	$	78,580	$	57,383
Derivative Liabilities	$	31,184	$	696	$	30,488	$	—	$	—	$	30,488

Derivative instruments in an asset or liability position are included within Other assets or Other liabilities, respectively, in the balance sheets on a net basis where the Company has both a legal right of offset and the intention to settle the contracts on a net basis. The Company often enters into different types of derivative contracts with a single counterparty and these contracts are covered under netting agreements. As of March 31, 2015 and December 31, 2014, the Company held cash collateral related to foreign currency derivative positions and certain other derivative positions of $183.7 million and $78.6 million, respectively. The assets and liabilities related to the net collateral paid or held were recorded as Other assets and Other liabilities within the balance sheets as the collateral and derivative positions are not intended to be settled on a net basis.

(a) Derivative Instruments Designated as Fair Value Hedges

The Company designates certain of its derivative instruments as fair value hedges or cash flow hedges and formally and contemporaneously documents all relationships between the hedging instruments and hedged items and links the hedging derivative to specific assets and liabilities. The Company assesses the effectiveness of the hedge both at inception and on an on-going basis, and determines whether the hedge is highly effective in offsetting changes in fair value or cash flows of the linked hedged item.

The Company may use foreign exchange contracts to hedge the fair value of certain fixed income securities as well as to hedge certain net investments in foreign operations. In connection with the Acquisition and the FX Forward (defined below), certain foreign exchange contracts utilized to hedge the fair value of certain net investments in foreign operations were de-designated as hedging instruments during the quarter.

The following table provides the total impact on earnings relating to derivative instruments formally designated as fair value hedges along with the impacts of the related hedged items for the three months ended March 31, 2015 and 2014:

				Hedged Items - Amount of Gain/(Loss) Recognized in Income Attributable to Risk
Derivatives Designated as Fair Value Hedges: Three Months Ended March 31, 2015 (U.S. dollars in thousands)	Gain/(Loss) Recognized in Income on Derivative				Fixed Maturity Investments		Ineffective Portion of Hedging Relationship - Gain/(Loss)
Interest rate exposure	$	—
Foreign exchange exposure	—
Total	$	—			$	—	$	—
Three Months Ended March 31, 2014
(U.S. dollars in thousands)
Interest rate exposure	$	—
Foreign exchange exposure	(6,531		)
Total	$	(6,531	)		$	8,325	$	1,794

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XL GROUP PLC

NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

The gains (losses) recorded on both the derivative instruments and specific items designated as being hedged as part of the fair value hedging relationships outlined above along with any associated ineffectiveness in the relationships are recorded through Net realized and unrealized gains (losses) on derivative instruments in the income statement.

Settlement of Fair Value Hedges

A summary of the fair value hedges that have been settled and their impact on results during the indicated periods as well as the remaining balance of fair value hedges and average years remaining to maturity as of March 31, 2015 and 2014 are shown below:

Settlement of Fair Value Hedges - Summary	Fair Value Hedges - Deposit Liabilities March 31,
(U.S. dollars in thousands, except years)	2015		2014
Cumulative reduction to interest expense	$	97,705	$	41,270
Remaining balance	$	135,490	$	191,925
Weighted average years remaining to maturity	22.7		22.2

During the second quarter of 2014, the Company negotiated the termination of one of its larger structured indemnity contracts. This contract had previously been designated as a fair value hedge that was settled. The remaining fair value adjustment of $47.0 million that was being amortized as a reduction of interest expense over the remaining term of the contract was recorded as an adjustment to interest expense at the termination date. As a result of the termination, a net decrease of $28.7 million was recorded to interest expense reflecting the realization of the remaining balance of the fair value hedge adjustment, partially offset by an accretion rate adjustment due to changes in cash flows.

(b) Derivative Instruments Designated as Hedges of the Net Investment in a Foreign Operation

The Company utilizes foreign exchange contracts to hedge the fair value of certain net investments in foreign operations. During the three months ended March 31, 2015 and 2014, the Company entered into foreign exchange contracts that were formally designated as hedges of investments in foreign subsidiaries, the majority of which have functional currencies of either U.K. sterling or the Euro. There was no ineffectiveness in these transactions.

The following table provides the weighted average U.S. dollar equivalent of foreign denominated net assets that were hedged and the resulting derivative gain (loss) that was recorded in the Foreign currency translation adjustment, net of tax, account within AOCI for the three months ended March 31, 2015 and 2014:

Derivative Instruments Designated as Hedges of the Net Investment in a Foreign Operation - Summary	Three months ended March 31,
(U.S. dollars in thousands)	2015		2014
Weighted average of U.S. dollar equivalent of foreign denominated net assets	$	628,941	$	2,687,455
Derivative gains (losses) (1)	$	66,770	$	960

____________

(1) Derivative gains (losses) from derivative instruments designated as hedges of the net investment in a foreign operation are recorded in the cumulative translation adjustment account within AOCI for each period.    

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XL GROUP PLC

NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

(c) Derivative Instruments Not Formally Designated As Hedging Instruments

The following table provides the total impact on earnings relating to derivative instruments not formally designated as hedging instruments under authoritative accounting guidance and from the ineffective portion of fair value hedges. The impacts are all recorded through Net realized and unrealized gains (losses) on derivatives in the income statement for the three months ended March 31, 2015 and 2014:

Net Realized and Unrealized Gains (Losses) on Derivative Instruments	Three months ended March 31,
(U.S. dollars in thousands)	2015			2014
Investment Related Derivatives:
Interest rate exposure	$	9,637		$	348
Foreign exchange exposure	(1,362		)	3,288
Credit exposure	82			(404		)
Financial market exposure	3,041			871
Financial Operations Derivatives:
Credit exposure	—			(4,800		)
Other Non-Investment Derivatives:
Foreign exchange contracts	2,059			—
Credit exposure	1,346			—
Guaranteed minimum income benefit contract	—			1,624
Modified coinsurance funds withheld contract	1,718			(911		)
Total gain (loss) recognized in income from derivatives not designated as hedging instruments	$	16,521		$	16
Amount of gain (loss) recognized in income from ineffective portion of fair value hedges	—			1,794
Net realized and unrealized gains (losses) on derivative instruments	$	16,521		$	1,810
Net realized and unrealized gains (losses) on life retrocession embedded derivative and derivative instruments - Life Funds Withheld Assets	$	(229,367	)	$	—

The Company’s objectives in using these derivatives are explained below.

(d)(i) Investment Related Derivatives

The Company, either directly or through its investment managers, may use derivative instruments within its investment portfolio, including interest rate swaps, inflation swaps, commodity contracts, credit derivatives (single name and index credit default swaps), options, forward contracts and financial futures (foreign exchange, bond and stock index futures), primarily as a means of economically hedging exposures to interest rate, credit spread, equity price changes and foreign currency risk or, in limited instances, for investment purposes. When using cleared (exchange traded) derivatives, the Company is exposed to the credit risk of the applicable clearing house and of the Company's future commissions merchant. When using uncleared (over-the-counter) derivatives, the Company is exposed to credit risk in the event of non-performance by the counterparties under any derivative contracts, although the Company generally seeks to use credit support arrangements with counterparties to help manage this risk.

Investment Related Derivatives – Interest Rate Exposure

The Company utilizes risk management and overlay strategies that incorporate the use of derivative financial instruments, primarily to manage its fixed income portfolio duration and net economic exposure to interest rate risks. The Company may also use interest rate swaps to convert certain liabilities from a fixed rate to a variable rate of interest or use them to convert a variable rate of interest from one basis to another.

Investment Related Derivatives – Foreign Exchange Exposure

The Company has exposure to foreign currency exchange rate fluctuations through its operations and in its investment portfolio. The Company uses foreign exchange contracts to manage its exposure to the effects of fluctuating foreign currencies on the value of certain of its foreign currency fixed maturities. These contracts are not designated as specific hedges for financial reporting purposes and, therefore, realized and unrealized gains and losses on these contracts are recorded in income in the period in which they occur. These contracts generally have maturities of twelve months or less.

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XL GROUP PLC

NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

In addition, certain of the Company's investment managers may, subject to investment guidelines, enter into forward contracts.

Investment Related Derivatives – Credit Exposure

Credit derivatives may be purchased within the Company's investment portfolio in the form of single name, basket or index credit default swaps, which are used to mitigate credit exposure through a reduction in credit spread duration (i.e., macro credit strategies rather than single-name credit hedging) or exposure to securities of selected issuers, including issuers that are not held in the underlying fixed income portfolio.

Investment Related Derivatives – Financial Market Exposure

Stock index futures may be purchased within the Company's investment portfolio in order to create synthetic equity exposure and to add value to the portfolio with overlay strategies where market inefficiencies are believed to exist. From time to time, the Company may enter into other financial market exposure derivative contracts on various indices including, but not limited to, inflation and commodity contracts.

(d)(ii) Financial Operations Derivatives – Credit Exposure

During the fourth quarter of 2014, the remaining financial operations credit derivative exposure, which was written as part of the Company's previous financial lines business and is outside of the Company's investment portfolio, was terminated. The Company has no continuing financial operations derivative credit exposures.

(d)(iii) Other Non-Investment Derivatives

Foreign Exchange Contracts

On January 9, 2015, the Company entered into deal contingent deliverable foreign exchange forwards ("FX Forwards") with Morgan Stanley Capital Services LLC and Goldman Sachs International. The purpose of the FX Forwards was to mitigate risk of foreign currency exposure related to the Acquisition. Following the close of the Acquisition, the FX Forwards were settled.

In connection with the Acquisition and the FX Forward, during the quarter, certain foreign exchange contracts utilized to hedge the fair value of certain net investments in foreign operations were de-designated as hedging instruments.

Credit Exposure

During the year ended December 31, 2014, the Company entered into a non-investment related credit derivative relating to a number of reference pool mortgage tranches associated with actual mortgage loans that were securitized into agency mortgage-backed securities and sold as Structured Agency Credit Risk Notes. As of March 31, 2015, there was no reported event of default on this obligation. As of March 31, 2015 and December 31, 2014, the notional amount outstanding related to the derivative was $31.1 million and the Company had recorded a derivative asset of $0.2 million and $0.1 million, respectively. During the three months ended March 31, 2015, the Company recorded Net realized and unrealized gains of $0.1 million relating to this credit derivative. The credit derivative is recorded at fair value based upon models developed by the Company. Significant unobservable inputs considered in the valuation include the impact of changes in interest rates, future default, delinquency and prepayment rates, credit spreads, changes in credit quality, and other market factors.

Guaranteed Minimum Income Benefit Contract

The Company also has derivatives embedded in certain reinsurance contracts. For a certain life reinsurance contract, the Company pays the ceding company a fixed amount equal to the estimated present value of the excess of the guaranteed benefit over the account balance upon the policyholder's election to take the income benefit. The fair value of this derivative is determined based on the present value of expected cash flows.

Modified Coinsurance Funds Withheld Contract

The Company has modified coinsurance and funds withheld reinsurance agreements that provide for a return to be paid to the Company based on a portfolio of fixed income securities. As such, the agreements contain an embedded derivative. The embedded derivative is bifurcated from the funds withheld balance and recorded at fair value with changes in fair value recognized in earnings through Net realized and unrealized gains (losses) on derivative instruments.

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XL GROUP PLC

NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

Modified Coinsurance Funds Withheld Reinsurance Agreements - Life Retrocession Embedded Derivative

In addition, the Company has entered into Life Retro Arrangements, as described in Note 3(c), "Acquisition and Disposals - Sale of Life Reinsurance Subsidiary." The embedded derivative related to the Life Retro Arrangements is recorded at fair value with changes in fair value recognized in earnings through Net realized and unrealized gains (losses) on life retrocession embedded derivative and derivative instruments - Life Funds Withheld Assets.

The value of the life retrocession embedded derivative includes the interest income, realized and unrealized gains and losses on Life Funds Withheld Assets and certain related expenses subsequent to May 30, 2014 as follows:

Components of Life Retrocession Embedded Derivative and Derivative Instruments - Life Funds Withheld Assets:	Three months ended March 31,
(U.S. dollars in thousands)	2015			2014
Interest income - Life Funds Withheld Assets	$	(50,996	)	—
Realized and unrealized gains (losses) - Life Funds Withheld Assets	(152,830		)	—
Other	96			—
Net realized and unrealized gains (losses) on life retrocession embedded derivative	$	(203,730	)	$	—
Net adjustments related to future policy benefit reserves, net of tax	$	(11,954	)	$	—
Net realized and unrealized gains (losses) on derivative instruments - Life Funds Withheld Assets	$	(13,683	)	$	—
Net realized and unrealized gains (losses) on life retrocession embedded derivative and derivative instruments - Life Funds Withheld Assets	$	(229,367	)	$	—

(e) Contingent Credit Features

Certain derivative agreements entered into by the Company or its subsidiaries contain credit rating downgrade provisions that permit early termination of the agreements by the counterparty if collateral is not posted following failure to maintain certain credit ratings from one or more of the principal credit rating agencies. If the Company were required to early terminate such agreements due to a credit rating downgrade, it could potentially be in a net liability position at the time of settlement of such agreements. The aggregate fair value of all derivative agreements containing such rating downgrade provisions that were in a liability position and any collateral posted under these agreements as of March 31, 2015 and December 31, 2014 were as follows:

Contingent Credit Features - Summary: (U.S. dollars in thousands)	March 31, 2015		December 31, 2014
Aggregate fair value of derivative agreements with downgrade provisions in a net liability position	$	5,598	$	5,770
Collateral posted to counterparty	$	—	$	—

8. Goodwill and Other Intangible Assets

During the first quarter of 2014, goodwill and intangible assets increased as a result of the completion of an acquisition. The transaction was accounted for using the acquisition method under which the Company recorded the identifiable assets and liabilities at their acquisition date fair values, and recorded the excess of consideration transferred over the net assets acquired as goodwill and intangible assets. The fair value of identifiable assets and liabilities acquired, as well as amounts recorded in the Company’s consolidated results since the acquisition date, are not material. The Company has goodwill and intangible assets of $442.4 million and $448.0 million at March 31, 2015 and December 31, 2014, respectively, predominantly related to the Reinsurance segment. The movement of this balance during the year to date is a result of the amortization of intangible assets with definite lives, and the impact of foreign currency translation.

9. Share Capital

(a) Authorized and Issued

Buybacks of Ordinary Shares

On February 21, 2014, XL-Ireland announced that its Board of Directors approved an increase to the Share Buyback Program, authorizing the purchase of up to $1.0 billion of our ordinary shares, which included the amounts that remained under the previous Share Buyback Program. The Company suspended active share buybacks during the quarter ended March 31, 2015 through the close of the Acquisition; however, with the close of the Acquisition, the Company continues to see share buybacks as a valuable capital management tool. As of March 31, 2015, $267.6 million remained available for purchase under the Share Buyback Program.

33

XL GROUP PLC

NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

(b) Stock Plans

The Company's performance incentive programs provide for grants of stock options, restricted stock, restricted stock units, performance units and stock appreciation rights. Share-based compensation granted by the Company generally contains a vesting period of three or four years, and certain awards also contain performance conditions. The Company records compensation expense related to each award over its vesting period, incorporating the best estimate of the expected outcome of performance conditions where applicable. Compensation expense is generally recorded on a straight line basis over the vesting period of an award. See Item 8, Note 20, “Share Capital,” to the Consolidated Financial Statements included in the Company's Annual Report on Form 10-K for the year ended December 31, 2014 for further information on the Company's performance incentive programs and associated accounting.

During the three months ended March 31, 2015, the Company granted approximately 1.3 million stock options with a weighted-average grant date fair value of $6.57 per option. The fair value of the options issued was estimated on the date of grant using the Black-Scholes option pricing model using the following weighted average assumptions:

Dividend yield	2.00	%
Risk free interest rate	1.70	%
Volatility	21.9	%
Expected lives	6.0 years

During the three months ended March 31, 2015, the Company granted approximately 1.5 million restricted stock units to certain employees of the Company and its subsidiaries with an aggregate grant date fair value of approximately $55.1 million. Each restricted stock unit represents the Company's obligation to deliver to the holder one ordinary share, and grants vest in three equal installments upon the first, second and third anniversaries of the date of grant. Restricted stock units are granted at the closing market price on the day of grant and entitle the holder to receive dividends declared and paid in the form of additional ordinary shares contingent upon vesting.

10. Notes Payable and Debt and Financing Arrangements

(a) Notes Payable and Debt

All outstanding debt of the Company as of March 31, 2015 and December 31, 2014 was issued by XL-Cayman, a 100% owned subsidiary of XL-Ireland. XL-Ireland does not have significant assets or operations independent of XL-Cayman. XL-Cayman's outstanding debt is fully and unconditionally guaranteed by XL-Ireland. The ability of XL-Cayman, like that of the Company, to obtain funds from its subsidiaries to satisfy any of its obligations under guarantees is subject to certain contractual restrictions, applicable laws and statutory requirements of the various countries in which the subsidiaries operate, including, among others, Bermuda, the United States, Ireland, Switzerland and the United Kingdom. For details of the required statutory capital and surplus for the principal operating subsidiaries of the Company, see Item 8, Note 25, “Statutory Financial Data,” to the Consolidated Financial Statements included in the Company's Annual Report on Form 10-K for the year ended December 31, 2014.

On March 30, 2015, XL-Cayman issued $500 million of subordinated notes due March 2025, with a fixed coupon of 4.45%, that are guaranteed by XL-Ireland. The notes are listed on the New York Stock Exchange. The notes were issued at 99.633% of the face amount and net proceeds were $492.2 million. Related expenses of the offering amounted to approximately $5.9 million. These costs were deferred and will be amortized over the term of the subordinated notes.

On March 30, 2015, XL-Cayman issued $500 million of subordinated notes due March 2045, with a fixed coupon of 5.5%, that are guaranteed by XL-Ireland. The notes are listed on the New York Stock Exchange. The notes were issued at 99.115% of the face amount and net proceeds were $488.4 million. Related expenses of the offering amounted to approximately $7.2 million. These costs were deferred and will be amortized over the term of the subordinated notes.

XL-Cayman and the Company were in compliance with all covenants by significant margins as of March 31, 2015, and XL-Cayman and the Company currently remain in compliance with all covenants.

34

XL GROUP PLC

NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

(b) Letter of Credit Facilities and Other Sources of Collateral

The Company has several letter of credit facilities provided on both syndicated and bilateral bases from commercial banks. These facilities are utilized primarily to support non-admitted insurance and reinsurance operations in the U.S. and capital requirements at Lloyd’s. The Company’s letter of credit facilities and revolving credit facilities at March 31, 2015 and December 31, 2014 were as follows:

Letter of Credit Summary: (U.S. dollars in thousands except percentages)	March 31, 2015 (1)			December 31, 2014 (1)
Revolving credit facility (2)	$	1,000,000		$	1,000,000
Available letter of credit facilities - commitments (3)	$	3,575,000		$	3,575,000
Available letter of credit facilities - in use	$	1,743,230		$	1,790,561
Collateralized by certain assets of the Company’s investment portfolio	65.7		%	66.2		%

____________

(1) As of March 31, 2015 and December 31, 2014, there were eight available letter of credit facilities.

(2) As of March 31, 2015 and December 31, 2014, the $1 billion of revolving credit available under the November 2013 unsecured credit agreements, which currently provide an aggregate amount for issuance of letters of credit and revolving credit loans up to $2 billion, was unutilized. The credit agreements entered into with Citicorp USA, Inc. in May through November 2013 (the "Citi Agreements") provide for issuance of letters of credit and revolving credit loans up to an aggregate amount of $575.0 million. As of March 31, 2015, $575.0 million of letters of credit were issued under these agreements and therefore such amount is not included in this line.

(3) The available letter of credit facilities include $1 billion that is also included in the "revolving credit facility" line in this table, as part of the November 2013 credit agreements, which currently provide an aggregate amount of outstanding letters of credit and revolving credit loans of up to $2 billion. The Company has the option to increase the size of the facilities under these agreements by an additional $500 million across such facilities. The Company also has the option to increase the maximum amount of the letters of credit and revolving credit loans available under the 2013 credit agreements with Citicorp USA, Inc. with the lender's and issuing lender's consent.

For details regarding these facilities see Item 8, Note 15(b), “Notes Payable and Debt and Financing Arrangements - Letter of Credit Facilities and Other Sources of Collateral,” to the Consolidated Financial Statements included in our Annual Report on Form 10-K for the year ended December 31, 2014.

11. Related Party Transactions

At each of March 31, 2015 and 2014, the Company owned minority stakes in six and five independent investment management companies (“Investment Manager Affiliates”) that are actively managing client capital and seeking growth opportunities, respectively. The Company seeks to develop relationships with specialty investment management organizations, generally acquiring an equity interest in the business. The Company also invests in certain of the funds and limited partnerships and other legal entities managed by these affiliates, and, through these funds and partnerships, pays management and performance fees to the Company's Investment Manager Affiliates. See Item 8, Note 7, “Investments in Affiliates,” to the Consolidated Financial Statements included in our Annual Report on Form 10-K for the year ended December 31, 2014.

In the normal course of business, the Company enters into assumed reinsurance contracts with certain of its other strategic affiliates, or their subsidiaries. Management believes that these transactions are conducted at market rates consistent with negotiated arm's-length contracts. During the three months ended March 31, 2015 and 2014, these contracts resulted in reported net premiums written, net reported claims and reported acquisition costs as summarized below.

(U.S. dollars in thousands)	Three months ended March 31,
	2015		2014
Reported net premiums written	$	27,076	$	16,240
Net losses and loss expenses incurred	$	9,100	$	6,138
Reported acquisition costs	$	9,012	$	7,629

Commencing in 2014, several of the Company’s wholly-owned subsidiaries retrocede assumed reinsurance business to special purpose reinsurers that receive capital from funds managed by the Company's subsidiary, New Ocean Capital Management Limited, a Bermuda based company, (“New Ocean”), as discussed in Note 12, “Variable Interest Entities”. Underwriting administration services are provided to the special purpose reinsurers by other subsidiaries of the Company under service fee agreements negotiated at arm's-length, while investment advisory services are provided by New Ocean.

During the three months endedMarch 31, 2015, ceded premiums earned, ceded losses and loss expenses incurred, ceding commission income, and other fee income related to these retrocessional contracts were not material to the Company. Management believes that these transactions are conducted at market rates consistent with negotiated arm's-length contracts.

35

XL GROUP PLC

NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

12. Variable Interest Entities

At times, the Company has utilized variable interest entities (“VIEs”) both indirectly and directly in the ordinary course of the Company's business.

The Company invests in CDOs and other investment vehicles that are issued through VIEs as part of the Company's investment portfolio. The activities of these VIEs are generally limited to holding the underlying collateral used to service investments therein. The Company's involvement in these entities is passive in nature and we are not the arranger of these entities. In addition, the Company has not been involved in establishing these entities and is not the primary beneficiary of these VIEs as contemplated in current authoritative accounting guidance.

The Company has a limited number of remaining outstanding credit enhancement exposures, including written financial guarantee and credit default swap contracts. The obligations related to these transactions are often securitized through VIEs. The Company is not the primary beneficiary of these VIEs as contemplated in current authoritative accounting guidance on the basis that management does not believe that the Company has the power to direct the activities, such as asset selection and collateral management, which most significantly impact each entity's economic performance. For further details on the nature of the obligations and the size of the Company's maximum exposure, see Note 7, “Derivative Instruments,” and Note 14(a), “Commitments and Contingencies - Financial Guarantee Exposures.”

During the third quarter of 2013, the Company, along with other investors, formed New Ocean to act as an investment manager focused on providing third-party investors access to insurance-linked securities and other insurance and reinsurance capital markets products. The Company holds a majority voting interest in New Ocean through its ownership of common shares and, accordingly, the financial statements of New Ocean have been included in the consolidated financial statements of the Company. None of the assets, liabilities, revenues or net income of New Ocean was material to the Company during the three months endedMarch 31, 2015. The equity interest attributable to third party investors in New Ocean recorded in the Company’s Unaudited Consolidated Balance Sheets as "Non-controlling interest in equity of consolidated subsidiaries" was $0.2 million and $0.2 million as of March 31, 2015 and December 31, 2014, respectively.

During the fourth quarter of 2013, the Company, along with other investors, invested in a new Bermuda-based company, New Ocean Focus Cat Fund Ltd. ("New Ocean FCFL"), which is considered a VIE under GAAP. During the second quarter of 2014, the Company formed another new Bermuda-based investment company, New Ocean Market Value Cat Fund, Ltd. ("New Ocean MVCFL"), which is also considered a VIE under GAAP. New Ocean MVCFL primarily invests in insurance-linked securities, with a current focus on catastrophe bonds.

During the year ended December 31, 2014, New Ocean FCFL invested in a special purpose Bermuda reinsurer, Vector Reinsurance Ltd (“Vector Re”), formed for the purpose of underwriting collateralized excess of loss reinsurance with a focus on global property catastrophe risks. During the first quarter of 2015, New Ocean MVCFL also invested in Vector Re. Most of Vector Re’s current underwriting activity relates to reinsurance business assumed from the Company's subsidiaries. Underwriting administration and claims services are provided to Vector Re by the Company under service fee contracts which management believes were negotiated at arm's-length, while investment advisory services are provided by New Ocean.

The Company currently holds majority equity interests, which are considered to be the controlling financial interests, in New Ocean FCFL and New Ocean MVCFL, and by extension, Vector Re. Accordingly, included in the consolidated financial statements of the Company are the total net assets of New Ocean FCFL, New Ocean MVCFL and Vector Re of $141.3 million and $139.9 million as of March 31, 2015 and December 31, 2014, respectively. The Company’s share of revenue and net income in these VIEs was not material to the Company for three months endedMarch 31, 2015. All inter-company transactions between the Company's entities have been eliminated in consolidation. The equity interest attributable to third party investors in New Ocean FCFL, New Ocean MVCFL and Vector Re recorded in the Company’s Consolidated Balance Sheets as "Non-controlling interest in equity of consolidated subsidiaries" was $58.8 million and $58.4 million as of March 31, 2015 and December 31, 2014, respectively.

36

XL GROUP PLC

NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

13. Computation of Earnings Per Ordinary Share and Ordinary Share Equivalent

The following table sets forth the computation of basic and diluted earnings per ordinary share for the three months ended March 31, 2015 and 2014:

	Three Months Ended March 31,
(U.S. dollars in thousands, except per share amounts)	2015		2014
Basic earnings per ordinary share & ordinary share equivalents outstanding:
Net income (loss) attributable to ordinary shareholders	$	36,281	$	255,717
Weighted average ordinary shares outstanding, in thousands - basic	255,724		276,337
Basic earnings per ordinary share & ordinary share equivalents outstanding	$	0.14	$	0.93
Diluted earnings per ordinary share & ordinary share equivalents outstanding:
Weighted average ordinary shares outstanding, in thousands - basic	255,724		276,337
Impact of share-based compensation and certain conversion features, in thousands	4,980		4,121
Weighted average ordinary shares outstanding, in thousands - diluted	260,704		280,458
Diluted earnings per ordinary share & ordinary share equivalents outstanding	$	0.14	$	0.91
Dividends per ordinary share	$	0.16	$	0.16

For the three months ended March 31, 2015 and 2014, ordinary shares available for issuance under share-based compensation plans of 5.0 million and 6.1 million, respectively, were not included in the calculation of diluted earnings per ordinary share because the assumed exercise or issuance of such shares would be anti-dilutive.

14. Commitments and Contingencies

(a) Financial Guarantee Exposures

The Company's outstanding financial guarantee contracts as of March 31, 2015 provide credit support for a variety of collateral types with the exposures comprised of an aggregate amount of $80.8 million notional financial guarantee on two notes backed by zero coupon long dated bonds and bank perpetual securities, including some issued by European financial institutions. As of March 31, 2015 and December 31, 2014, the total gross claim liability recorded was nil and the contracts had a weighted average contractual term to maturity of 25.0 years and 25.2 years, respectively.

Surveillance procedures to track and monitor credit deteriorations in the insured financial obligations are performed by the primary obligors for each transaction on the Company's behalf. Information regarding the performance status and updated exposure values is provided to the Company on a quarterly basis and evaluated by management in recording claims reserves. As of March 31, 2015, there were no reported events of default on these obligations.

(b) Litigation

The Company and its subsidiaries are subject to litigation and arbitration in the normal course of business. These lawsuits and arbitrations principally involve claims on policies of insurance and contracts of reinsurance and are typical for the Company and for the property and casualty insurance and reinsurance industry in general. Such claims proceedings are considered in connection with the Company's loss and loss expense reserves. Reserves in varying amounts may or may not be established in respect of particular claims proceedings based on many factors, including the legal merits thereof. In addition to litigation relating to insurance and reinsurance claims, the Company and its subsidiaries are subject to lawsuits and regulatory actions in the normal course of business that do not arise from or directly relate to claims on insurance or reinsurance policies. This category of business litigation typically involves, among other things, allegations of underwriting errors or misconduct, employment claims, regulatory activity, shareholder disputes or disputes arising from business ventures. The status of these legal actions is actively monitored by management.

Legal actions are subject to inherent uncertainties, and future events could change management's assessment of the probability or estimated amount of potential losses from pending or threatened legal actions. Based on available information, it is the opinion of management that the ultimate resolution of pending or threatened legal actions other than claims proceedings, both individually and in the aggregate, will not result in losses having a material adverse effect on the Company's financial position or liquidity as of March 31, 2015.

If management believes that, based on available information, it is at least reasonably possible that a material loss (or additional material loss in excess of any accrual) will be incurred in connection with any legal actions, the Company discloses

37

XL GROUP PLC

NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

an estimate of the possible loss or range of loss, either individually or in the aggregate, as appropriate, if such an estimate can be made, or discloses that an estimate cannot be made. Based on the Company's assessment as of March 31, 2015, no such disclosures were considered necessary.

15. Accumulated Other Comprehensive Income (Loss)

The changes in AOCI, net of tax, by component for the three months ended March 31, 2015 and 2014 are as follows:

Three months ended March 31, 2015 (U.S. dollars in thousands)	Unrealized Gains (Losses) on Investments (1)			OTTI Losses Recognized in AOCI			Foreign Currency Translation Adjustments			Underfunded Pension Liability			Cash Flow Hedge		Total
Balance, beginning of period, net of tax	$	1,590,114		$	(76,047	)	$	(11,188	)	$	(20,789	)	$	2,368	$	1,484,458
OCI before reclassifications	254,267			—			32,404			975			—		287,646
Amounts reclassified from AOCI	(74,781		)	9,936			—			—			95		(64,750		)
Tax benefit (expense)	(5,805		)	(78		)	3,699			—			—		(2,184		)
Net current period OCI - net of tax	173,681			9,858			36,103			975			95		220,712
Balance, end of period, net of tax	$	1,763,795		$	(66,189	)	$	24,915		$	(19,814	)	$	2,463	$	1,705,170
Three months ended March 31, 2014 (U.S. dollars in thousands)
Balance, beginning of period, net of tax	$	822,432		$	(89,190	)	$	14,541		$	(13,239	)	$	2,113	$	736,657
OCI before reclassifications	265,250			—			(5,900		)	(31		)	—		259,319
Amounts reclassified from AOCI	(22,638		)	3,409			—			—			110		(19,119		)
Tax benefit (expense)	(32,103		)	(113		)	2,020			—			—		(30,196		)
Net current period OCI - net of tax	210,509			3,296			(3,880		)	(31		)	110		210,004
Balance, end of period, net of tax	$	1,032,941		$	(85,894	)	$	10,661		$	(13,270	)	$	2,223	$	946,661

____________

(1) Included in these amounts is the impact of Shadow Adjustments. As of December 31, 2014 the cumulative impact of these adjustments was $445.1 million. During the three months ended March 31, 2015, net movements of $(60.4) million were recorded, resulting in a total cumulative net impact of Shadow Adjustments on future policy benefit reserves of $384.8 million as of March 31, 2015.

38

XL GROUP PLC

NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

The reclassifications out of AOCI along with the associated income statement line items affected by component, and the total related tax (expense) benefit for the three months ended March 31, 2015 and 2014 are as follows:

Gross Amount Reclassified From AOCI
Details About AOCI Components (U.S. dollars in thousands)	Three months ended March 31, 2015			Three months ended March 31, 2014			Affected Line Item in the Statement of Income
Unrealized gains and losses on investments:
	$	(78,551	)	$	(24,914	)	Net realized gains (losses) on investments sold
	15,724			2,276			OTTI on investments
	$	(11,954	)	$	—		Net realized and unrealized gains (losses) on life retrocession embedded derivative and derivative instruments - Life Funds Withheld Assets
	$	(74,781	)	$	(22,638	)	Total before tax
	87			453			Provision (benefit) for income tax
	$	(74,694	)	$	(22,185	)	Net of tax
OTTI losses recognized in OCI:
	$	9,875		$	1,958		Net realized gains (losses) on investments sold
	61			1,451			OTTI on investments transferred to (from) OCI
	$	9,936		$	3,409		Total before tax
	(3		)	(113		)	Provision (benefit) for income tax
	$	9,933		$	3,296		Net of tax
Gains and losses on cash flow hedges:
Interest rate contracts	$	95		$	110		Interest Expense
	—			—			Provision (benefit) for income tax
	$	95		$	110		Net of tax
Total reclassifications for the period, gross of tax	$	(64,750	)	$	(19,119	)
Tax benefit (expense)	84			340
Total reclassifications for the period, net of tax	$	(64,666	)	$	(18,779	)

39

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

GENERAL

The following is a discussion of our financial condition, liquidity and results of operations. Certain aspects of our business have loss experience characterized as low frequency and high severity. This may result in volatility from period to period in both the Company's and an individual segment's results of operations and financial condition. Unless the context otherwise indicates, references herein to “the Company,” “we,” “us,” or “our” are to XL Group plc, an Irish public limited company (“XL-Ireland”), and its consolidated subsidiaries.

This “Management's Discussion and Analysis of Financial Condition and Results of Operations” contains forward-looking statements that involve inherent risks and uncertainties. Statements that are not historical facts, including statements about our beliefs and expectations, are forward-looking statements. These statements are based upon current plans, estimates and expectations. Actual results may differ materially from those projected in such forward-looking statements and, therefore, undue reliance should not be placed on them. See “Cautionary Note Regarding Forward-Looking Statements” for a list of additional factors that could cause actual results to differ materially from those contained in any forward-looking statement, as well as Item 1A, “Risk Factors,” included in our Annual Report on Form 10-K for the year ended December 31, 2014. This Management's Discussion and Analysis of Financial Condition and Results of Operations does not discuss the impact of our recently announced Acquisition.

This discussion and analysis should be read in conjunction with the “Management's Discussion and Analysis of Financial Condition and Results of Operations” and the audited Consolidated Financial Statements and Notes thereto, reported in Items 7 and 8, respectively, of our Annual Report on Form 10-K for the year ended December 31, 2014.

CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS

The Private Securities Litigation Reform Act of 1995 (“PSLRA”) provides a “safe harbor” for forward-looking statements. Any prospectus, prospectus supplement, Annual Report to ordinary shareholders, proxy statement, Form 10-K, Form 10-Q or Form 8-K or any other written or oral statements made by us or on our behalf may include forward-looking statements that reflect our current views with respect to future events and financial performance. Such statements include forward-looking statements both with respect to us in general, and to the insurance and reinsurance sectors in particular (both as to underwriting and investment matters). Statements that include the words “expect,” “intend,” “plan,” “believe,” “project,” “anticipate,” “may,” "could," or "would" and similar statements of a future or forward-looking nature identify forward-looking statements for purposes of the PSLRA or otherwise.

All forward-looking statements address matters that involve risks and uncertainties. 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:

• changes in the size of our claims relating to natural or man-made catastrophe losses due to the preliminary nature of some reports and estimates of loss and damage to date;

• trends in rates for property and casualty insurance and reinsurance;

• the timely and full recoverability of reinsurance placed by us with third parties, or other amounts due to us;

• changes in the projected amount of ceded reinsurance recoverables and the credit ratings and creditworthiness of reinsurers;

• actual loss experience from insured or reinsured events and the timing of claims payments being faster or the receipt of reinsurance recoverables being slower than we anticipated;

• increased competition on the basis of pricing, capacity, coverage terms or other factors, such as the increased inflow of third party capital into reinsurance markets, which could harm our ability to maintain or increase our business volumes or profitability;

• greater frequency or severity of claims and loss activity than our underwriting, reserving or investment practices anticipate based on historical experience or industry data;

• the impact of changes in the global financial markets, such as the effects of inflation on our business, including on pricing and reserving, increased government involvement or intervention in the financial services industry, changes in interest rates, credit spreads and foreign currency exchange rates and future volatility in the world's credit, financial

40

and capital markets that adversely affect the performance and valuation of our investments, future financing activities and access to such markets or general financial condition;

• our ability to successfully implement our business strategy;

• our ability to successfully attract and raise additional third party capital for existing or new investment vehicles;

• the potential impact on us from government-mandated insurance coverage for acts of terrorism and other regulation;

• changes in credit ratings or rating agency policies or practices;

• the potential for changes to methodologies, estimations and assumptions that underlie the valuation of our financial instruments that could result in changes to investment valuations;

• changes to our assessment as to whether it is more likely than not that we will be required to sell, or have the intent to sell, available for sale fixed maturity securities before their anticipated recovery;

• the availability of borrowings and letters of credit under our credit facilities;

• the ability of our subsidiaries to pay dividends to XL Group and our wholly-owned subsidiary XLIT Ltd. ("XL-Cayman");

• the potential effect of legislative or regulatory developments applicable to us or our subsidiaries, brokers or customers in the jurisdictions in which we operate, such as those that could impact the financial markets or increase our business costs and required capital levels, including but not limited to changes in regulatory capital balances that must be maintained by our operating subsidiaries and governmental actions for the purpose of stabilizing the financial markets;

• the effects of business disruption, economic contraction or economic sanctions due to global political and social conditions such as war, terrorism or other hostilities, or pandemics;

• the actual amount of new and renewal business and acceptance of our products and services, including new products and services and the materialization of risks related to such products and services;

• changes in the availability, cost or quality of ceded reinsurance;

• changes in the distribution or placement of risks due to increased consolidation of insurance and reinsurance brokers and bankruptcies or other financial concerns of companies insofar as they affect property and casualty insurance and reinsurance coverages or claims that we may have as a counterparty;

• inability to retain key personnel, including following the completion of the acquisition of Catlin Group Limited ("Catlin");

• changes in accounting standards, policies or practices or the application thereof;

• the effects of mergers, acquisitions and divestitures, including our ability to modify our internal control over financial reporting as a result of any of such transactions, changes to our risk appetite as a result of such transactions and our ability to realize the value or benefits expected as a result of such transactions, including the life retrocession arrangements and the acquisition of Catlin;

• changes in general economic conditions, including new or continued sovereign debt concerns in Euro-Zone countries or downgrades of U.S. securities by credit rating agencies, which could affect our financial condition, results of operations, liquidity or cash flows;

• changes in applicable tax laws, tax treaties or tax regulations or the interpretation or enforcement thereof;

• judicial decisions and rulings, new theories of liability or emerging claims coverage issues, legal tactics and settlement terms;

• failure to realize the potential synergies from the acquisition of Catlin, including as a result of the failure, difficulty or delay in integrating Catlin’s businesses into those operated by the Company; and

• the other factors set forth in Item 1A, “Risk Factors,” included in our Annual Report on Form 10-K for the year ended December 31, 2014 and our other documents on file with the SEC.

The foregoing review of important factors should not be construed as exhaustive and should be read in conjunction with the other cautionary statements that are included herein or elsewhere. We undertake no obligation to update publicly or revise

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any forward-looking statement, whether as a result of new information, future developments or otherwise, except as required by the federal securities laws.

EXECUTIVE OVERVIEW

See “Management's Discussion and Analysis of Financial Condition and Results of Operations - Executive Overview,” included in Item 7 of our Annual Report on Form 10-K filed for the year ended December 31, 2014. That discussion is updated with the disclosures set forth below.

RESULTS OF OPERATIONS AND KEY FINANCIAL MEASURES

Results of Operations

The following table presents an analysis of our net income (loss) attributable to ordinary shareholders and other financial measures (described below) for the three months ended March 31, 2015 and 2014:

(U.S. dollars in thousands, except per share amounts)	Three Months Ended
	March 31,
	2015		2014
Net income (loss) attributable to ordinary shareholders	$	36,281	$	255,717
Earnings (loss) per ordinary share – basic	$	0.14	$	0.93
Earnings (loss) per ordinary share – diluted	$	0.14	$	0.91
Weighted average number of ordinary shares and ordinary share equivalents, in thousands – basic	255,724		276,337
Weighted average number of ordinary shares and ordinary share equivalents, in thousands – diluted	260,704		280,458

Key Financial Measures

The following are some of the financial measures management considers important in evaluating our operating performance:

	Three Months Ended
	March 31,						Change
(U.S. dollars in thousands, except ratios and per share amounts)	2015			2014			2015 to 2014
Underwriting profit (loss) - P&C operations	$	146,836		$	144,874		1.4		%
Combined ratio - P&C operations	88.9		%	89.7		%	(0.8)pts
Net investment income - P&C operations (1)	$	147,884		$	162,297		(8.9		)%
Operating net income (2)	$	194,376		$	238,649		(18.6		)%
Operating net income per ordinary share (2)	$	0.75		$	0.85		$	(0.10	)
Annualized return on average ordinary shareholders’ equity (2)	1.4		%	10.1		%	(8.7)pts
Annualized operating return on average ordinary shareholders’ equity (2)	7.7		%	9.4		%	(1.7)pts
Annualized operating return on average ordinary shareholders’ equity excluding unrealized gains and losses on investments (2)	9.1		%	10.3		%	(1.2)pts
(U.S. dollars)	March 31, 2015			December 31, 2014			Change (Three Months)
Book value per ordinary share (2)	$	39.90		$	39.31		$	0.59
Fully diluted tangible book value per ordinary share (2)	$	37.60		$	36.79		$	0.81

____________

(1) Net investment income - P&C operations includes net investment income related to the net results from structured products.

(2) Represents a non-GAAP financial measure as discussed further below.

The following are descriptions of these key financial measures and a brief discussion of the factors influencing them:

Underwriting profit – property and casualty insurance and reinsurance (“P&C”) operations

One way that we evaluate the performance of our P&C operations is by underwriting profit or loss. We do not measure performance based on the amount of gross premiums written. Underwriting profit or loss is calculated from premiums earned less net losses incurred and expenses related to underwriting activities.

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In the following discussion as well as in the “Income Statement Analysis” section, the following ratios are used to explain the underwriting profit (loss) from our P&C operations:

▪ The combined ratio related to the P&C operations is the sum of the loss and loss expense ratio and the underwriting expense ratio. A combined ratio under 100% represents an underwriting profit and over 100% represents an underwriting loss. In the P&C industry, the combined ratio is a widely used measure of underwriting profitability.

▪ The loss and loss expense ratio related to the P&C operations is calculated by dividing the losses and loss expenses incurred by the net premiums earned for the Insurance and Reinsurance segments.

▪ The underwriting expense ratio related to the P&C operations is the sum of acquisition costs and operating expenses for the Insurance and Reinsurance segments divided by net premiums earned for the Insurance and Reinsurance segments.

▪ The acquisition expense ratio related to the P&C operations is calculated by dividing the acquisition costs incurred by the net premiums earned for the Insurance and Reinsurance segments.

▪ The operating expense ratio related to the P&C operations is calculated by dividing the operating expenses incurred by the net premiums earned for the Insurance and Reinsurance segments.

Our underwriting profit (loss) in the three months ended March 31, 2015 and 2014 was consistent with the combined ratio, discussed below.

Combined ratio – P&C operations

The following table presents the ratios for our P&C operations for the three months ended March 31, 2015 and 2014:

	Three Months Ended
	March 31,				Change
	2015		2014		2015 to 2014
Loss and loss expense ratio	58.3	%	58.9	%	(0.6	)
Acquisition expense ratio	11.5	%	13.6	%	(2.1	)
Operating expense ratio	19.1	%	17.2	%	1.9
Underwriting expense ratio	30.6	%	30.8	%	(0.2	)
Combined ratio	88.9	%	89.7	%	(0.8	)

Three months ended March 31, 2015 vs. 2014: The 0.8 percentage point reduction in our combined ratio was the result of a decrease in the loss ratio of 0.6 percentage points, mainly due to higher levels of favorable prior year reserve development and lower levels of natural catastrophe losses in 2015. The underwriting expense ratio decrease of 0.2 percentage points was mainly driven by a decrease in acquisition expenses due to a change in the reinsurance structure in the International primary casualty group in our Insurance segment, partially offset by an increase in operating expenses as a result of higher compensation costs from increased headcount due to business expansion.

For further information on our combined ratio, see “Income Statement Analysis” below.

Net investment income - Excluding Life Funds Withheld Assets

This excludes income from assets held to support the transaction outlined in Item 1, Note 3(c), "Acquisition and Disposals - Sale of Life Reinsurance Subsidiary" ("Life Funds Withheld Assets"), which includes interest and dividend income together with the amortization of premium and discount on fixed maturities and short-term investments, net of related investment expenses, is an important measure that affects our overall profitability. Our largest liability relates to our unpaid loss reserves, and our investment portfolio provides liquidity for claims settlements of these reserves as they become due. As a result, a significant part of the investment portfolio is invested in fixed income securities. Net investment income is influenced by a number of factors, including the amounts and timing of inward and outward cash flows, the level of interest rates and credit spreads, foreign exchange rates and changes in overall asset allocation. See the segment results under “Investment Activities” below for a discussion of our net investment income for the three months endedMarch 31, 2015.

Operating net income and Operating net income per ordinary share

Operating net income is a non-GAAP financial measure defined as net income (loss) attributable to ordinary shareholders excluding: (1) our net investment income - Life Funds Withheld Assets, net of tax, (2) our net realized gains and losses on

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investments sold - excluding Life Funds Withheld Assets, net of tax, (3) our net realized gains and losses on investments sold - Life Funds Withheld Assets, other than temporary impairments ("OTTI") - Life Funds Withheld Assets and net unrealized gains and losses on investments, trading - Life Funds Withheld Assets, (4) our net realized and unrealized gains and losses on derivatives, net of tax, (5) our net realized and unrealized gains and losses on life retrocession embedded derivative and derivative instruments - Life Funds Withheld Assets, net of tax, (6) our share of items (2) and (4) for our insurance company affiliates for the periods presented, (6) our foreign exchange gains and losses, net of tax, (7) our foreign exchange gains and losses, net of tax and (8) our expenses related to the acquisition of Catlin, net of tax. We evaluate the performance of and manage our business to produce an underwriting profit. In addition to presenting net income (loss), we believe that showing operating net income (loss) enables investors and other users of our financial information to analyze our performance in a manner similar to how we analyze our performance. In this regard, we believe that providing only a GAAP presentation of net income (loss) would make it more difficult for users of our financial information to evaluate our underlying business. We also believe that equity analysts and certain rating agencies that follow us (and the insurance industry as a whole) exclude these items from their analyses for the same reasons, and they request that we provide this non-GAAP financial information on a regular basis. A reconciliation of our net income (loss) attributable to ordinary shareholders to operating net income (loss) is provided at “Reconciliation of Non-GAAP Measures” below.

Operating net income per ordinary share is calculated by dividing non-GAAP operating net income by the weighted average number of ordinary shares and ordinary share equivalents outstanding for each period combined with the impact from dilution of share-based compensation and certain conversion features where dilutive.

Annualized return on average ordinary shareholders' equity (“ROE”)

ROE is another non-GAAP financial measure that we consider important in evaluating our operating performance and view as a key measure of return generated for ordinary shareholders. ROE is calculated by dividing the net income (loss) attributable to ordinary shareholders for any period by the average of the opening and closing Shareholders' equity attributable to XL-Ireland. We establish minimum target ROEs for our total operations, segments and lines of business. If our minimum ROE targets over the longer term are not met with respect to any line of business, we seek to modify and/or exit this line. In addition, among other factors, compensation of our senior officers is dependent on the achievement of our performance goals to enhance ordinary shareholder value as measured by ROE (adjusted for certain items considered to be “non-operating” in nature).

The following table presents our ROE for the three months ended March 31, 2015 and 2014:

	Three Months Ended
	March 31,				Change
	2015		2014		2015 to 2014
ROE	1.4	%	10.1	%	(8.7)pts

Three months ended March 31, 2015 vs. 2014: The decrease in our ROE for the three months ended March 31, 2015 as compared to the same period of 2014 was due to the decrease in our net income attributable to ordinary shareholders as a result of the Net realized and unrealized losses on life retrocession embedded derivative and derivative instruments - Life Funds Withheld Assets of $229.4 million during the three months ended March 31, 2015 as compared to the same period of 2014 where we did not have this derivative instrument.

For more information on the Net realized and unrealized gains (losses) on life retrocession embedded derivative and derivative instruments - Life Funds Withheld Assets see Item 1, Note 7(d)(iii), "Derivative Instruments - Other Non-Investment Derivatives - Credit Exposure," to the Unaudited Consolidated Financial Statements included herein.

Annualized operating return on average ordinary shareholders’ equity (“Operating ROE”)

Operating ROE is another non-GAAP financial measure that we consider important in evaluating our operating performance. Operating ROE is derived by dividing non-GAAP operating net income for any period by the average of the opening and closing ordinary shareholders' equity.

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The following table presents our Operating ROE for the three months ended March 31, 2015 and 2014:

	Three Months Ended
	March 31,				Change
	2015		2014		2015 to 2014
Operating ROE	7.7	%	9.4	%	(1.7)pts

Three months ended March 31, 2015 vs. 2014: The decrease in our Operating ROE was the result of lower operating net income in 2015 due to decreases in net earned premiums and net investment income for the three months endedMarch 31, 2015, as compared to the same periods of 2014. A detailed discussion of our individual segment operating results is included below under "Income Statement Analysis".

A reconciliation of Net income (loss) attributable to ordinary shareholders to operating net income (loss) is provided under “Reconciliation of Non-GAAP Measures” below.

Annualized operating return on average ordinary shareholders' equity excluding unrealized gains and losses on investments (“Operating ROE ex-UGL”)

Operating ROE ex-UGL is an additional measure of our profitability that eliminates the impacts of mark to market fluctuations on our investment portfolio that have not been realized through sales, which we believe provides a consistent measure of our performance. Operating ROE ex-UGL is derived from the non-GAAP operating net income measure by dividing non-GAAP operating net income for any period by the average of the opening and closing ordinary shareholders' equity excluding unrealized gains and losses on investments. A reconciliation of the opening and closing ordinary shareholders' equity to the opening and closing ordinary shareholders' equity excluding unrealized gains and losses on investments is provided under "Reconciliation of Non-GAAP Measures" below.

The following table presents our Operating ROE ex-UGL for the three months ending March 31:

	Three Months Ended
	March 31,				Change
	2015		2014		2015 to 2014
Operating ROE ex-UGL	9.1	%	10.3	%	(1.2)pts

Three months ended March 31, 2015 vs. 2014: The decrease in our Operating ROE ex-UGL was the result of the lower operating net income in 2015 due to the factors discussed above as part of Operating ROE.

Book value per ordinary share

We view the change in our book value per ordinary share as an additional measure of our performance, representing the value generated for our ordinary shareholders each period, and we believe that this measure (along with the diluted measures described below) is a key driver of our share price over time. Book value per ordinary share, a non-GAAP financial measure, is calculated by dividing ordinary shareholders' equity (total shareholders' equity less non-controlling interest in equity of consolidated subsidiaries) by the number of outstanding ordinary shares at the applicable period end. Book value per ordinary share is affected primarily by net income (loss), by any changes in the net unrealized gains and losses on our investment portfolio, by currency translation adjustments and by the impact of any share buyback or issuance activity. Ordinary shareholders' equity was $10.2 billion and $10.0 billion and the number of ordinary shares outstanding was 256.7 million and 255.2 million as of March 31, 2015 and December 31, 2014, respectively. Ordinary shares outstanding include all ordinary shares legally issued and outstanding (as disclosed on the face of the balance sheets) as well as all director share units outstanding.

The following table presents our book value per ordinary share as of March 31, 2015 and December 31, 2014:

(U.S. dollars)	March 31, 2015		December 31, 2014		Change (Three Months)
Book value per ordinary share	$	39.90	$	39.31	$	0.59

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Three months ended March 31, 2015: The increase in our book value per ordinary share was primarily due to our current quarter net income attributable to ordinary shareholders combined with an increase in net unrealized gains on investments.

Fully diluted tangible book value per ordinary share

Fully diluted tangible book value per ordinary share is a non-GAAP financial measure and is calculated by dividing ordinary shareholders' equity excluding intangible assets (as disclosed on the face of the balance sheets) by the number of outstanding ordinary shares at the applicable period end combined with the impact from dilution of share-based compensation and certain conversion features where dilutive.

The following table presents our fully diluted tangible book value per ordinary share as of March 31, 2015 and December 31, 2014:

(U.S. dollars)	March 31, 2015		December 31, 2014		Change (Three Months)
Fully diluted tangible book value per ordinary share	$	37.60	$	36.79	$	0.81

Three months ended March 31, 2015: The increase in our fully diluted tangible book value per ordinary share was a result of the factors noted above as part of book value per ordinary share.

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RECONCILIATION OF NON-GAAP MEASURES

The following is a reconciliation of net income (loss) attributable to ordinary shareholders to operating net income (loss) and also includes the calculation of Operating ROE and Operating ROE ex-UGL for the three months ended March 31, 2015 and 2014:

(U.S. dollars in thousands, except ratios and per share amounts)	Three Months Ended
	March 31,
	2015			2014
Net income (loss) attributable to ordinary shareholders	$	36,281		$	255,717
Net realized and unrealized (gains) losses on life retrocession embedded derivative and derivative instruments - Life Funds Withheld Assets	229,367			—
Net realized (gains) losses on investments and net unrealized (gains) losses on investments, Trading - Life Funds Withheld Assets	(48,289		)	—
Net investment income - Life Funds Withheld Assets	(50,419		)	—
Foreign exchange revaluation (gains) losses on and other income and expense items related to Life Funds Withheld Assets	(2,386		)	—
Net income (loss) attributable to ordinary shareholders excluding Contribution from Life Retrocession Arrangements (1)	164,554			255,717
Net realized (gains) losses on investments sold - excluding Life Funds Withheld Assets, net of tax	(4,518		)	(18,889		)
Net realized and unrealized (gains) losses on derivatives	(16,521		)	(1,810		)
Net realized and unrealized (gains) losses on investments and derivatives related to the Company's insurance company affiliates, net of tax	658			(3,958		)
Exchange (gains) losses, net of tax	24,739			7,589
Expenses related to Catlin acquisition	25,464			—
Operating net income (loss)	$	194,376		$	238,649
Per ordinary share results:
Net income (loss) attributable to ordinary shareholders	$	0.14		$	0.91
Operating net income (loss)	$	0.75		$	0.85
Weighted average ordinary shares outstanding:
Basic	255,724			276,337
Diluted - Net income	260,704			280,458
Diluted - Operating net income	260,704			280,458
Return on ordinary shareholders' equity:
Closing ordinary shareholders' equity (at period end)	$	10,244,057		$	10,244,962
Unrealized (gain) loss on investments, net of tax	$	(1,697,606	)	$	(947,047	)
Average ordinary shareholders' equity for the period excluding unrealized gains and losses on investments	$	8,533,067		$	9,281,153
Average ordinary shareholders' equity for the period	$	10,138,904		$	10,121,298
Operating net income (loss)	$	194,376		$	238,649
Annualized operating net income (loss)	$	777,504		$	954,596
Annualized return on ordinary shareholders' equity - operating net income	7.7		%	9.4		%
Annualized return on ordinary shareholders' equity excluding unrealized gains and losses on investments - operating net income	9.1		%	10.3		%

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SIGNIFICANT ITEMS AFFECTING THE RESULTS OF OPERATIONS

Our net income and other financial measures as shown above for the three months endedMarch 31, 2015 have been affected by, among other things, the following significant items:

1)    The current underwriting environment; and

2)    Market movement impacts on our investment portfolio.

1) The Current Underwriting Environment

There can be no assurance that the following (re)insurance rate conditions or growth opportunities will be sustained or further materialize, or lead to improvements in our books of business. See “Cautionary Note Regarding Forward-Looking Statements.”

Insurance

Overall rate changes were generally flat for the three months ended March 31, 2015. Momentum continued to slow as pricing remained below loss trend in several lines and as markets, particularly the shorter-tail lines, continued to deteriorate. In the first quarter, our Professional businesses achieved rate in excess of 1% driven by our technology ("cybertech") and miscellaneous professional businesses. Our International Property and Casualty businesses were flat, with slight increases in casualty and middle markets offset by slight decreases in property businesses. North America businesses were down 1% as rate reductions of 5-6% in property were partially offset by rate increases of 2-3% in environmental, primary casualty and construction lines. Our Specialty businesses were most severely impacted with an overall rate decrease of 1.5% reflecting ongoing competitive markets, particularly in our aviation lines.

Growth in gross premiums written across the Insurance segment was strong, especially in our North American P&C and Specialty business groups this quarter. Our construction, global risk management and excess and surplus businesses contributed to growth in North America. New teams in both our marine and crisis management businesses contributed to the strong growth in Specialty. Our International P&C business group was soundly up when adjusted for foreign exchange movements reflecting higher new and renewed premiums in primary casualty and middle markets. Finally, our Professional book was also driven up by new business in international financial lines and continued growth in our cybertech book, partially offset by a moderate decline in our U.S. professional business.

The trading environment for our core lines of insurance business remains competitive and we continue to focus on those lines of business that we believe provide the best return on capital, including the writing of selective new business, and remain committed to taking the underwriting actions necessary to improve our margins.

Reinsurance

The Reinsurance segment's gross written premium for the quarter decreased by 3.7% in the three months ended March 31, 2015 as compared to the same period in 2014. The impact of foreign exchange on gross written premium year over year was a reduction of $54 million or 6.2%. Excluding the impact of foreign exchange, the 2.5% growth in the quarter was primarily driven by the specialty crop insurance book and a few new opportunities in U.S. casualty treaty for which we are the lead reinsurer.

In terms of market conditions, we experienced deteriorating rate adequacy across all lines and regions during the quarter. The largest magnitude of deterioration was experienced in the property catastrophe book, followed by other short tail lines and casualty.

The April 1 renewals for the segment, the most significant of which being the Japanese market, were competitive with catastrophe excess of loss rates off 10-15% and increased ceding commission pressure on proportional treaties. There were some isolated areas of increased demand from some large buyers as well.

2) Market Movement Impacts on Our Investment Portfolio (Excluding Life Funds Withheld Assets)

During the three months ended March 31, 2015, the positive mark to market change of $80.1 million on our available for sale ("AFS") investments was primarily driven by decreases in U.S. government bond rates. This represents an approximately 0.2% appreciation in average assets for the three months ended March 31, 2015.

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The following table provides further detail regarding the movements in relevant credit markets, as well as in government interest rates using selected market indices during the three months ended March 31, 2015:

	Interest Rate Movement for the three months ended March 31, 2015 (1) (‘+’/‘-’ represents increases / decreases in interest rates)	Credit Spread Movement for the three months ended March 31, 2015 (2) (‘+’/‘-’ represents widening / tightening of credit spreads)
United States	-28 basis points (5 year Treasury)	-10 basis points (US Corporate A rated)
		-1 basis points (US Mortgage Master Index)
		-1 basis points (US CMBS, AAA rated)
United Kingdom	-18 basis points (10 year Gilt)	-22 basis points (UK Corporate, AA rated)
Euro-zone	-11 basis points (5 year Bund)	0 basis points (Europe Corporate, A rated)

____________

(1) Source: Bloomberg Finance L.P.

(2) Source: Merrill Lynch Global Indices.

Net realized gains on investments in the three months ended March 31, 2015 totaled $4.6 million, including net realized gains of $15.2 million from sales of fixed maturities partially offset by net realized losses of approximately $10.6 million related to other than temporary impairments ("OTTI") charges on certain of the Company’s fixed income investments. For further analysis of this, see “Income Statement Analysis - Investment Activities” below.

OTHER KEY FOCUSES OF MANAGEMENT

We remain focused on, among other things, managing capital, enhancing enterprise risk management capabilities and monitoring regulatory change.  In addition, in connection with the recently announced closing of our acquisition of Catlin (the “Acquisition”), we are focused on both successfully integrating our respective businesses, including culture, products, internal controls, procedures and systems, as well as capitalizing on the respective strengths and talents of both organizations.

Catlin Acquisition

We announced the closing of the Acquisition on May 1, 2015. Management is highly focused on successfully integrating Catlin and realizing the anticipated synergies associated with this recent significant acquisition. Following the initial announcement of the proposed Acquisition, management developed a comprehensive integration plan that identifies key areas of focus and action plans in anticipation of closing. Examples of this include the development of proposed operating models and leadership structures, talent management, system and process integration roadmaps and "day one" execution plans for structural and organizational design changes. These efforts have been further broken down into multiple work streams led by an integration steering committee and a project management team that includes colleagues from both organizations. Management, the integration steering committee and the project management team have continued to implement this integration plan since the closing of the Acquisition.

Management is also focused on understanding the compatibility and consistency of the risk management frameworks of the two organizations. We believe the combined organization is able to identify and understand material risk concentrations, since prior to the completion of the Acquisition, both organizations had similar approaches to risk governance and management to allow for appropriate corrective or mitigating actions. We are evaluating each of the organizations' risk appetites and limit frameworks in order to determine the appropriate tolerances and appetites for the strategy of the combined organization. Among other matters, this exercise will consider model risk aggregations such as event, zonal and regional catastrophe concentrations, and probable maximum loss ("PML") exposures associated with terrorism, realistic disaster scenarios, country risk, mortality, credit and investments. Until such time, certain aggregate exposures will likely exceed the risk limit tolerances identified in Item 1, "Business - Enterprise Risk Management," in our Annual Report on Form 10-K for the year ended December 31, 2014.

Capital Management

The management of our capital is fundamental to our business model and our ability to underwrite business.

Buybacks of Ordinary Shares

On February 21, 2014, we announced that the XL-Ireland Board of Directors approved an increase to our share buyback program, authorizing the purchase of up to $1.0 billion of our ordinary shares (the "Share Buyback Program"). At December 31, 2014, $267.6 million remained available for purchase under the Share Buyback Program. Active share buybacks were suspended during the quarter ended March 31, 2015. However, with the close of the Acquisition, we continue to see share buybacks as a valuable capital management tool.

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Issuance of the 4.45% Subordinated Debt due March 2025

On March 30, 2015, XL-Cayman issued $500 million of subordinated notes due March 2025, with a fixed coupon of 4.45%, that XL-Ireland guaranteed. The securities are listed on the New York Stock Exchange. The notes were issued at 99.633% of the face amount and net proceeds were $492.2 million. Related expenses of the offering amounted to $5.9 million. These costs were deferred and will be amortized over the term of the subordinated notes.

Issuance of the 5.5% Subordinated Debt due March 2045

On March 30, 2015, XL-Cayman issued $500 million of subordinated notes due March 2045, with a fixed coupon of 5.5%, that XL-Ireland guaranteed. The securities are listed on the New York Stock Exchange. The notes were issued at 99.115% of the face amount and net proceeds were $488.4 million. Related expenses of the offering amounted to $7.2 million. These costs were deferred and will be amortized over the term of the subordinated notes.

Catlin Acquisition - Bridge Facility

In connection with the acquisition of Catlin, we engaged in capital management activity in support of the transaction. XL-Cayman, as borrower, XL-Ireland, X.L. America, Inc., XL Insurance (Bermuda) Ltd, XL Re Ltd, and XL Life Ltd, as guarantors, Morgan Stanley Senior Funding, Inc., as administrative agent, and the lenders party thereto entered into a senior unsecured 364-Day Bridge Loan Agreement providing for a £1.6 billion Bridge Facility (the "Bridge Facility"). On April 8, 2015, XL had deposited a sufficient amount of cash, cash equivalents and U.S. government securities in escrow to discharge the cash consideration paid to Catlin shareholders in respect of the Acquisition. Accordingly, and pursuant to the terms of the Bridge Facility, on that date we terminated the commitments under the Bridge Facility.

Risk Management

As noted under "Catlin Acquisition" above, we are evaluating risk appetites and limit frameworks in light of the Acquisition to determine appropriate tolerances and appetites for the strategy of the combined organization. Until that determination is made, certain aggregate exposures will likely exceed the risk limit tolerances identified in the risk management and risk appetite framework detailed in Item 1, “Business - Enterprise Risk Management,” included in our Annual Report on Form 10-K filed for the year ended December 31, 2014.

The table below shows our estimated per event net 1% and 0.4% exceedance probability exposures for certain peak natural catastrophe peril regions. These estimates assume that amounts due from reinsurance and retrocession purchases are 100% collectible. There may be credit or other disputes associated with these potential receivables.

			1-in-100 Event				1-in-250 Event
Geographical Zone (U.S. dollars in millions)	Peril	Measurement Date of In-Force Exposures (1)	Probable Maximum Loss (2)		Percentage of Adjusted Tangible Shareholders’ Equity at March 31, 2015 (3)		Probable Maximum Loss (2)		Percentage of Adjusted Tangible Shareholders’ Equity at March 31, 2015 (3)
North Atlantic	Windstorm	January 1, 2015	$	1,298	12.9	%	$	1,759	17.5	%
North America	Earthquake	January 1, 2015	700		7.0	%	1,297		12.9	%
Europe	Windstorm	January 1, 2015	511		5.1	%	715		7.1	%
Japan	Earthquake	January 1, 2015	213		2.1	%	283		2.8	%
Japan	Windstorm	January 1, 2015	135		1.3	%	189		1.9	%

____________

(1) Detailed analyses of aggregated in-force exposures and maximum loss levels are done periodically. The measurement dates represent the date of the last completed detailed analysis by geographical zone.

(2) Probable maximum losses, which include secondary uncertainty that incorporates variability around the expected probable maximum loss for each event, do not represent our maximum potential exposures and are pre-tax.

(3) Adjusted Tangible Shareholders’ Equity is defined as Total Shareholders’ Equity less (i) Goodwill and Other Intangible Assets and (ii) Accumulated Other Comprehensive Income (excluding net balances associated with Life Funds Withheld Assets).

Regulatory Change

As part of our operational efficiency, management continues to actively monitor and assess the various regulatory initiatives and legislation that impact us or in the future could impact us. For example, management has been focused on Solvency II, which was adopted by the European Parliament in April 2009. This is a European Union directive covering the capital adequacy and risk management of, and regulatory reporting for, European-based (re)insurers, as well as providing for a new supervisory regime for the insurance industry. The Omnibus II directive, which was agreed to by the European Commission, the European Parliament and the Council of Ministers, sets a Solvency II implementation date of January 1, 2016.

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The Central Bank of Ireland has issued proposed interim guidelines and the Prudential Regulation Authority has issued a supervisory statement on applying the European Insurance and Occupational Pensions Authority (“EIOPA”) guidelines for authorized firms to ensure their eventual readiness for Solvency II. See “Business - Regulation,” included in Item 1 of our Annual Report on Form 10-K for the year ended December 31, 2014.

CRITICAL ACCOUNTING POLICIES AND ESTIMATES

See the discussion of our Critical Accounting Policies and Estimates in “Management's Discussion and Analysis of Financial Condition and Results of Operations - Critical Accounting Policies and Estimates,” included in Item 7 of our Annual Report on Form 10-K for the year ended December 31, 2014.

VARIABLE INTEREST ENTITIES AND OTHER OFF-BALANCE SHEET ARRANGEMENTS

See the discussion of our variable interest entities and other off-balance sheet arrangements in “Management's Discussion and Analysis of Financial Condition and Results of Operations - Variable Interest Entities (“VIEs”) and Other Off-Balance Sheet Arrangements,” included in our Annual Report on Form 10-K for the year ended December 31, 2014 and Item 1, Note 12, “Variable Interest Entities,” to the Unaudited Consolidated Financial Statements included herein.

SEGMENTS

We are organized into two operating segments: Insurance and Reinsurance. Our general investment and financing operations are reflected in "Corporate and Other". Subsequent to our life reinsurance subsidiary transaction described in Item 1, Note 3(c), "Acquisition and Disposals - Sale of Life Reinsurance Subsidiary" to the Unaudited Consolidated Financial Statements, GreyCastle Life Reinsurance (SAC) Ltd ("GCLR") reinsures the majority of our life reinsurance business through 100% quota share reinsurance (the "Life Retro Arrangements"). As a result, we no longer consider our Life operations to be a separate operating segment and the results of the life run-off business ("Run-Off Life Operations") are also reported within Corporate and Other. The Run-Off Life Operations subject to the Life Retro Arrangements ("Run-Off Life Operations - Life Retro Arrangements") was, prior to June 30, 2014, reported within our Life operations segment. Prior period information has been re-presented to reflect the current presentation.

We evaluate the performance of both the Insurance and Reinsurance segments based on underwriting profit. Other items of our revenue and expenditure are not evaluated at the segment level for reporting purposes. In addition, we do not allocate investment assets by segment for our P&C operations. Investment assets related to our run-off life operations and certain structured products included in the Insurance and Reinsurance segments are held in separately identified portfolios. As such, net investment income from these assets is included in the contribution from the applicable segment. See Item 1, Note 5, “Segment Information,” to the Unaudited Consolidated Financial Statements included herein for a reconciliation of segment data to our Unaudited Consolidated Financial Statements.

INCOME STATEMENT ANALYSIS

Segment Results for the three months ended March 31, 2015 compared to the three months ended March 31, 2014

Insurance

Our Insurance operations provide commercial property, casualty and specialty insurance products on a global basis. Products generally provide tailored coverages for complex corporate risks and as of March 31, 2015 included the following lines of business: property, casualty, professional liability, environmental liability, aviation and satellite, marine and offshore energy, equine, fine art and specie, surplus lines, political risk and trade credit, crisis management, surety and other insurance coverages, including those mentioned above, through our programs, middle market and construction businesses. We focus on those lines of business within our Insurance operations that we believe provide the best return on capital over time. These lines of business were divided into the following business groups as of March 31, 2015: International Property and Casualty (“IPC”), North America Property and Casualty (“NAPC”), Global Professional Lines (“Professional”) and Global Specialty Lines (“Specialty”).

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The following table summarizes the underwriting profit (loss) for the Insurance segment:

	Three Months Ended						Percentage
	March 31,						Change
(U.S. dollars in thousands)	2015			2014			2015 to 2014
Gross premiums written	$	1,654,747		$	1,570,926		5.3	%
Net premiums written	1,089,108			1,127,367			(3.4	)%
Net premiums earned	962,306			992,440			(3.0	)%
Net losses and loss expenses	616,947			639,193			(3.5	)%
Acquisition costs	80,387			105,000			(23.4	)%
Operating expenses	208,457			203,053			2.7	%
Underwriting profit (loss)	$	56,515		$	45,194		25.0	%
Net results – structured products	2,905			4,890			(40.6	)%
Net fee income and other (expense)	(7,465		)	(1,212		)	N/M

____________

* N/M - Not Meaningful

Gross Premiums Written

The following table summarizes our gross premiums written by business group for the Insurance segment:

	Three Months Ended				Percentage
	March 31,				Change
(U.S. dollars in thousands)	2015		2014		2015 to 2014
IPC	$	571,561	$	582,948	(2.0	)%
NAPC	456,236		396,040		15.2	%
Professional	341,713		333,154		2.6	%
Specialty	285,237		258,784		10.2	%
Total	$	1,654,747	$	1,570,926	5.3	%

Gross premiums written increased by 5.3%. However, when evaluated in local currency, our gross premiums written increased by 10.8%. The unfavorable foreign exchange on our gross premiums written was mainly due to the weakening of the U.K. sterling and the Euro against the U.S. dollar, impacting business written in these currencies. The following is a summary of the premium movements by business group:

▪ IPC - decrease of 2.0% driven by unfavorable foreign exchange rates as noted above across all lines; lower retention rates in international property and Lloyd's middle market, partially offset by increases in new business and retention rate in our maturing international middle market business lines.

▪ NAPC - increase of 15.2% largely attributable to an increase in new and renewal business in risk management, environmental, surplus lines and construction business lines.

▪ Professional - increase of 2.6% mainly attributable to new business in international financial lines and cybertech business, and increased renewals in select professional, partially offset by decreased new business in the United States and unfavorable foreign exchange rates in international financial lines as noted above.

▪ Specialty - increase of 10.2% due to increased new business and a higher retention rate in marine, and renewal business in crisis management, partially offset by unfavorable foreign exchange movement as noted above.

Net Premiums Written

The decrease of 3.4% resulted from an increase in ceded premiums written partially offset by the gross premiums written increases outlined above. The increase in ceded premiums is largely attributable to a modification in our reinsurance structure within our International primary casualty group to one that utilizes proportional reinsurance in order to take advantage of favorable market terms. In addition, an increase in cessions within NAPC contributed to the higher ceded premiums written.

Net Premiums Earned

The decrease of 3.0% is attributable to higher ceded premiums written and earned in the International primary casualty group due to the modification in the reinsurance structure and an increase in cessions within NAPC as mentioned above.

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Net Losses and Loss Expenses

Combined Ratio

The following table presents the ratios for the Insurance segment:

	Three Months Ended				Percentage
	March 31,				Point Change
	2015		2014		2015 to 2014
Loss and loss expense ratio	64.1	%	64.4	%	(0.3	)
Acquisition expense ratio	8.4	%	10.6	%	(2.2	)
Operating expense ratio	21.6	%	20.4	%	1.2
Underwriting expense ratio	30.0	%	31.0	%	(1.0	)
Combined ratio	94.1	%	95.4	%	(1.3	)

The loss and loss expense ratio includes net losses incurred for both the reported year and any favorable or adverse prior year development of loss and loss expense reserves held at the beginning of the year. The following table summarizes these components of the loss ratio for the Insurance segment for the three months ended March 31, 2015 and 2014:

	Three Months Ended				Percentage
	March 31,				Point Change
	2015		2014		2015 to 2014
Loss and loss expense ratio	64.1	%	64.4	%	(0.3	)
Prior year reserve development	0.6	%	0.8	%	(0.2	)
Loss ratio excluding prior year development	64.7	%	65.2	%	(0.5	)

Loss Ratio - excluding prior year development

The 0.5 percentage point decrease in the loss ratio excluding prior year development was primarily as a result of lower levels of medium and large loss events in the three months ended March 31, 2015 as compared to the prior year period. Losses net of reinsurance recoveries and reinstatement premiums related to natural catastrophe events for the three months ended March 31, 2015 were $2.6 million lower than in the same period of 2014. Excluding favorable prior year development, net natural catastrophe losses and related reinstatement premiums in both quarters, the loss ratio for the three months ended March 31, 2015 compared to the same period of 2014 decreased by 0.3 percentage points to 63.2% due to lower levels of attritional losses.

Prior Year Development

The following table summarizes the net (favorable) adverse prior year development by line of business relating to the Insurance segment for the three months ended March 31, 2015 and 2014:

	Three Months Ended
	March 31,
(U.S. dollars in thousands)	2015			2014
Property	$	(1,576	)	$	(15,679	)
Casualty	(4,564		)	1,702
Professional	1,672			(1,226		)
Specialty	(1,499		)	4,973
Other (1)	(30		)	1,896
Total	$	(5,997	)	$	(8,334	)

____________

(1)    Other includes programs, excess and surplus, surety, structured indemnity and certain discontinued lines.

Net favorable prior year reserve development of $6.0 million was mainly driven by a release in reinsurance bad debt reserves in the international primary casualty lines.

Underwriting Expense Ratio

The decrease of 1.0 percentage points was due to a decrease in the acquisition expense ratio of 2.2 percentage points, partially offset by an increase in the operating expense ratio of 1.2 percentage points, as follows:

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▪ Acquisition expense ratio - decreased largely due to the favorable impact of increased ceding commissions as a result of our modified reinsurance structure mentioned above.

▪ Operating expense ratio - increased 1.2 percentage points largely due to an increase in expenses associated with business expansion, mostly compensation expense for the three months ended March 31, 2015 compared to the same period of 2014, as well as the unfavorable impact from the decrease of earned premiums as a result of our modified reinsurance structure mentioned above.

Net Results - Structured Products

Net results from structured insurance products, which decreased 40.6% from the prior year, includes net investment income of $7.6 million and $10.1 million and interest expense of $4.7 million and $5.2 million, for the three months ended March 31, 2015 and 2014, respectively. The decrease in the net results from the prior year quarter was mainly due to a reduction in investment income resulting from a lower asset base, reflecting the run-off nature of this business.

For further information about our structured indemnity contracts that are accounted for as deposit contracts, see Item 8, Note 12, “Deposit Liabilities,” to the Consolidated Financial Statements included in our Annual Report on Form 10-K for the year ended December 31, 2014.

Net Fee Income and Other

The decrease compared to the same period of 2014 in net fee income and other was driven by Specialty discontinued business lines.

Reinsurance

The Reinsurance segment provides casualty, property risk, property catastrophe, marine, aviation and other specialty reinsurance on a global basis, with business being written on both a proportional and non-proportional treaty basis and also on a facultative basis. Our reinsurance operations were structured into three geographical business groups as of March 31, 2015: Bermuda, North America and International. International includes Europe and Emerging Markets (Asia Pacific, Latin America and Middle East North Africa).

The following table summarizes the underwriting profit (loss) for the Reinsurance segment:

	Three Months Ended				Percentage
	March 31,				Change
(U.S. dollars in thousands)	2015		2014		2015 to 2014
Gross premiums written	$	825,662	$	857,713	(3.7	)%
Net premiums written	747,635		792,173		(5.6	)%
Net premiums earned	357,188		420,088		(14.5	)%
Net losses and loss expenses	152,880		192,312		(20.5	)%
Acquisition costs	71,492		87,235		(18.0	)%
Operating expenses	42,495		40,861		4.0	%
Underwriting profit (loss)	$	90,321	$	99,680	(9.4	)%
Net results – structured products	2,120		3,063		(30.8	)%
Net fee income and other	825		673		22.6	%

Gross Premiums Written

The following table summarizes our gross premiums written by business group for the Reinsurance segment:

	Three Months Ended				Percentage
	March 31,				Change
(U.S. dollars in thousands)	2015		2014		2015 to 2014
Bermuda	$	265,711	$	272,120	(2.4	)%
North America	171,338		141,048		21.5	%
International	388,613		444,545		(12.6	)%
Total	$	825,662	$	857,713	(3.7	)%

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Gross premiums written decreased by 3.7%. However, when evaluated in local currency, our gross premiums written increased by 2.5%. The unfavorable foreign exchange on our gross premiums written was mainly due to the weakening of the U.K. sterling and the Euro against the US dollar, impacting Bermuda and International business written in these currencies. Below is a summary of the premium movements by business group:

▪ Bermuda - decrease of 2.4% due to reduced rates and cancellations on property catastrophe business, plus the unfavorable impact of foreign exchange on business written in U.K. sterling as noted above. This was largely offset by increases in new business and timing from a property treaty quota share which incepted in a later quarter in the prior year.

▪ North America - increase of 21.5% due to increased new business and business volume, including a significant increase in our agricultural business.

▪ International - decrease of 12.6%, mainly driven by unfavorable foreign exchange rates particularly on the property treaty and casualty treaty businesses as noted above. Additionally, premium adjustments on prior incepting policies were unfavorable compared to the prior year quarter.

Net Premiums Written

The decrease of 5.6% resulted from the gross written premium decreases in International as outlined above, partially offset by increases related to agricultural business in North America.

Net Premiums Earned

The decrease of 14.5% is mainly attributable to the impact of foreign exchange and the overall earn through of lower net written premiums, particularly in International.

Net Losses and Loss Expenses

Combined Ratio

The following table presents the ratios for the Reinsurance segment:

	Three Months Ended				Percentage
	March 31,				Point Change
	2015		2014		2015 to 2014
Loss and loss expense ratio	42.8	%	45.8	%	(3.0	)
Acquisition expense ratio	20.0	%	20.8	%	(0.8	)
Operating expense ratio	11.9	%	9.7	%	2.2
Underwriting expense ratio	31.9	%	30.5	%	1.4
Combined ratio	74.7	%	76.3	%	(1.6	)

The loss and loss expense ratio includes net losses incurred for both the reported year and any favorable or adverse prior year development of loss and loss expense reserves held at the beginning of the year. The following table summarizes these components of the loss ratio for the Reinsurance segment for the three months ended March 31, 2015 and 2014:

	Three Months Ended				Percentage
	March 31,				Point Change
	2015		2014		2015 to 2014
Loss and loss expense ratio	42.8	%	45.8	%	(3.0	)
Prior year reserve development	11.9	%	7.2	%	4.7
Loss ratio excluding prior year development	54.7	%	53.0	%	1.7

Loss Ratio - excluding prior year development

The 1.7 percentage point increase in the loss ratio excluding prior year development was primarily as a result of the impact of prior year premium adjustments which lowered current quarter earned premiums in International in the three months ended March 31, 2015 as compared to the prior year period. There were no losses related to natural catastrophe events for the three months ended March 31, 2015 and 2014.

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Prior Year Development

The following table summarizes the net (favorable) adverse prior year development by business group relating to the Reinsurance segment for the three months ended March 31, 2015 and 2014:

	Three Months Ended
	March 31,
(U.S. dollars in thousands)	2015			2014
Property and other short-tail lines	$	(42,293	)	$	(25,550	)
Casualty and other long-tail lines	(198		)	(4,946		)
Total	$	(42,491	)	$	(30,496	)

Net favorable prior year reserve development of $42.5 million for the three months ended March 31, 2015 was mainly attributable to the following:

▪ Net favorable prior year development for the short-tailed lines totaled $42.3 million. Details of the significant components are as follows:

▪ For property catastrophe lines, net prior year development was $17.6 million favorable due to better than expected development on attritional losses mainly in Europe and Bermuda and a reduction on a 2013 catastrophe loss.

▪ For property other lines, net prior year development was $16.8 million favorable driven primarily by better than expected development on attritional losses in the North America, Europe and Bermuda books.

▪ For marine and aviation lines, net prior year development was $7.9 million favorable driven by better than expected development on attritional losses in the European book and a reduction on a 2005 hurricane.

▪ Net favorable prior year development for the long-tailed lines totaled $0.2 million driven by a reduction in a large loss on casualty lines in North America, and better than expected development on attritional losses in Europe, partially offset by $0.5 million unfavorable development in other long-tail lines.

Underwriting Expense Ratio

The increase of 1.4 percentage points was due to an increase in the operating expense ratio of 2.2 percentage points partially offset by a decrease in the acquisition expense ratio of 0.8 percentage points, as follows:

▪ Operating expense ratio - increased 2.2 percentage points due to higher compensation costs, which includes the expansion of our agricultural business in North America, combined with the impact of lower net earned premiums as noted above.

▪ Acquisition expense ratio - decreased due to changes to the commission structure of our agricultural business in North America and due to a state assessment relating to prior year premiums in North America, which did not repeat in the current year.

Net Results - Structured Products

Net results from structured reinsurance products, which decreased 30.8% from the prior year quarter, includes net investment income of $7.5 million and $8.7 million, interest expense of $5.3 million and $5.6 million and operating expenses of $0.1 million and nil, for the three months ended March 31, 2015 and 2014, respectively. The decrease in the net results from the prior year quarter was mainly due to a reduction in investment income resulting from a lower asset base, reflecting the run-off nature of this business.

For further information about our structured indemnity contracts that are accounted for as deposit contracts see Item 8, Note 12, “Deposit Liabilities,” to the Consolidated Financial Statements included in our Annual Report on Form 10-K for the year ended December 31, 2014.

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Corporate and Other (including Run-Off Life operations)

Our general investment and financing operations are reflected in Corporate and Other. In addition, results of our Run-Off Life Operations are reported within Corporate and Other. We ceased writing new life reinsurance contracts in 2009 and since that time have been managing the run-off of our life reinsurance operations.

Run-Off Life Operations

On May 1, 2014, XLIB entered into a sale and purchase agreement with GreyCastle providing for the sale of 100% of the common shares of XLIB's life reinsurance subsidiary, XLLR. As a result, we have ceded the majority of our life reinsurance business to GCLR through the Life Retro Arrangements. This transaction covers a substantial portion of our life reinsurance reserves.

Subsequent to the transaction, we no longer consider our Life operations to be a separate operating segment, and the results of the Run-Off Life Operations are reported within Corporate and Other. The Run-Off Life Operations - Life Retro Arrangements were, prior to June 30, 2014, reported within our Life operations segment. Prior period information has been re-cast to reflect the current presentation. For a further discussion, see Item 1, Note 3(c), "Acquisition and Disposals - Sale of Life Reinsurance Subsidiary," to the Unaudited Consolidated Financial Statements included herein.

Impact of Life Retro Arrangements

Subsequent to the completion of the sale of our life reinsurance subsidiary, as described in Item 1, Note 3(c), "Acquisition and Disposals - Sale of Life Reinsurance Subsidiary," to the Unaudited Consolidated Financial Statements included herein, the impact of the Life Retro Arrangements on the Company's results for the three months ended March 31, 2015 was as follows:

Impact of Life Retro Arrangements	Three months ended March 31,
(U.S. dollars in thousands)	2015
Underwriting profit (loss) (1)	$	603
Net investment income - Life Funds Withheld Assets	50,419
Net realized gains (losses) on investments sold - Life Funds Withheld Assets	52,738
Net unrealized gains (losses) on investments, Trading - Life Funds Withheld Assets	760
OTTI on investments - Life Funds Withheld Assets	(5,209		)
Exchange (gains) losses	3,684
Other income and expenses	(1,298		)
Net realized and unrealized gains (losses) on life retrocession embedded derivative and derivative instruments - Life Funds Withheld Assets	(229,367		)
Net income (loss)	$	(127,670	)
Change in net unrealized gains (losses) on investments - Life Funds Withheld Assets, net of tax	37,115
Change in adjustments related to future policy benefit reserves, net of tax	60,356
Change in cumulative translation adjustment - Life Funds Withheld Assets, net of tax	30,802
Comprehensive income (loss)	$	603

____________

(1) The underwriting profit of $0.6 million relates to a premium adjustment during the three months ended March 31, 2015 relating to the Life Retro Arrangements transaction which was completed on May 30, 2014. Excluding this transaction, the impact to comprehensive income relating to the Life Retro Arrangements was nil for the three months ended March 31, 2015.

As shown in the table above, although our net income (loss) is subject to variability related to the Life Retro Arrangements, there is minimal net impact on the Company's comprehensive income in any period. For a further information on the life retrocession embedded derivative, see Item 1, Note 7(d)(iii), “Derivative Instruments - Other Non-Investment Derivatives - Credit Exposure,” to the Unaudited Consolidated Financial Statements included herein.

Run-Off Life Operations - not subject to Life Retro Arrangements

During the three months ended March 31, 2015, our net underwriting result from our Run-Off Life Operations not subject to Life Retro Arrangements ("Run-Off Life Operations - not subject to Life Retro Arrangements") was a loss of $8.3 million and our net investment result relating to our Run-Off Life Operations - not subject to Life Retro Arrangements, including net realized gains and losses, was $9.1 million, producing a net income from Run-Off Life Operations - not subject to Life Retro Arrangements of $0.8 million.

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Investment Performance (Excluding Life Funds Withheld Assets)

We manage our fixed income portfolio in accordance with investment guidelines approved by the Risk and Finance Committee of the Board of Directors of XL-Ireland. The following is a summary of the investment portfolio returns, which are calculated by dividing the sum of gross investment income or net income from investment affiliates, realized gains (losses) and unrealized gains (losses) by the average market value of the portfolio, for each of our fixed income and non-fixed income portfolios, for the three months ended March 31, 2015 and 2014:

	Three Months Ended
	March 31,
	2015		2014
Total Return on Investments (1)	1.4	%	1.8	%
Other Portfolios (2)
Alternative portfolio (3)	2.6	%	2.4	%
Equity portfolio	2.0	%	1.4	%

___________

(1) The performance of investment portfolios is measured on a local currency basis and is not annualized. For the aggregate performance calculation, respective local currency balances are translated to U.S. dollars using quarter end exchange rates to calculate composite portfolio results. Performance represents the P&C operations only.

(2) Performance on Other Portfolios is included in the Total Return on Investments.

(3) Performance on the alternative portfolio reflects the three months ended February 28, 2015 and 2014, respectively for both equity and non-equity alternative funds.

Investment Activities (Excluding Life Funds Withheld Assets)

The following table illustrates net investment income, net income from investment fund affiliates, net realized gains (losses) on investments and net realized and unrealized gains (losses) on derivative instruments for the three months ended March 31, 2015 and 2014:

	Three Months Ended				Percentage
	March 31,				Change
(U.S. dollars in thousands)	2015		2014		2015 to 2014
Net investment income (1)	$	158,094	$	233,189	(32.2	)%
Net income (loss) from investment fund affiliates (2)	35,329		33,303		6.1	%
Net realized gains (losses) on investments	4,602		19,229		(76.1	)%
Net realized and unrealized gains (losses) on derivative instruments	16,521		1,810		N/M

____________

(1) Net investment income includes: Net investment income - excluding Life Funds Withheld Assets and net investment income related to the net results from structured products.

(2) We generally record the income related to alternative fund affiliates on a one-month lag and the private investment fund affiliates on a three-month lag based upon the availability of the information provided by the investees.

* N/M - Not Meaningful

Net Investment Income

The decrease of 32.2% was primarily due to the impact of the Life Retro Arrangements effective May 30, 2014, since all of the investment results associated with the Life Funds Withheld Assets for the three months ended March 31, 2015 accrued to GCLR. For further information on the Life Retro Arrangements see Item 1, Note 3(c), “Acquisition and Disposals - Sale of Life Reinsurance Subsidiary,” to the Unaudited Consolidated Financial Statements included herein.

In addition, a reduction in investment yields as a result of lower reinvestment rates contributed to the net investment income decrease. We estimate that approximately $3.0 billion of assets with an average gross book yield of 2.9% will mature and pay down over the next 12 months compared to the average new money rate in the three months ended March 31, 2015 on our portfolio of 1.3%. Further, we accumulated $1.0 billion of cash and cash equivalents and short dated U.S. government securities during the quarter to help finance escrow accounts at March 31, 2015 for the Acquisition, which created an additional burden on net investment income this quarter.

58

Net Income (Loss) from Investment Fund Affiliates

Net income from investment fund affiliates includes earnings from our investments in closed-end investment funds and partnerships and similar vehicles that are accounted for under the equity method.

Performance for the three months ended March 31, 2015 was strong and moderately higher than the same period of 2014. Alternative investment fund returns were strong and exceed the prior year quarter's positive results, driven by both fundamental and systematic strategies. Private investment fund returns were positive but modestly weaker in the quarter than the prior year quarter's results.

Net Realized Gains and Losses on Investments

Net realized gains of $4.6 million in the three months ended March 31, 2015 included the following:

▪ Net realized gains of $15.2 million resulted primarily from sales of non-Agency RMBS and equities, partially offset by losses in corporate securities and Other investments.

▪ Realized losses of approximately $10.6 million related to the OTTI write-down of certain of our AFS investments. The main components of the net impairment charges were:

• $7.6 million related to certain high yield securities that we no longer intend to hold for a period sufficient to recover their fair value to amortized cost.

• $0.3 million related to certain equities that were in a loss position for more than 11 months.

• $0.1 million for structured securities, principally non-Agency RMBS, where we determined that the likely recovery on these securities was below the carrying value and, accordingly, recorded an impairment of the securities to the discounted value of the cash flows expected to be received on these securities.

• $2.6 million related to foreign exchange losses.

Net realized gains on investments of $19.2 million in the three months ended March 31, 2014 included realized losses of $3.7 million related to the write-down of certain of our structured securities and medium term notes with respect to which we determined that there was an other-than-temporary decline in the value of those investments, as well as net realized gains of $23.0 million.

Net Realized and Unrealized Gains and Losses on Derivative Instruments

Net realized and unrealized gains on derivative instruments of $16.5 million in the three months ended March 31, 2015 resulted from our investment strategy to manage interest rate risk, foreign exchange risk and credit risk, and to replicate permitted investments and other hedging activities. For a further discussion, see Item 1, Note 7, “Derivative Instruments,” to the Unaudited Consolidated Financial Statements included herein.

Other Revenues and Expenses

The following table sets forth our other revenues and expenses for the three months ended March 31, 2015 and 2014:

	Three Months Ended					Percentage
	March 31,					Change
(U.S. dollars in thousands)	2015			2014		2015 to 2014
Net income (loss) from operating affiliates (1)	$	22,668		$	46,285	(51.0	)%
Exchange (gains) losses	27,390			10,441		N/M
Corporate operating expenses	62,443			51,338		21.6	%
Net realized and unrealized gains (losses) on life retrocession embedded derivative and derivative instruments - Life Funds Withheld Assets	(229,367		)	—		N/M
Interest expense (2)	41,481			32,160		29.0	%
Income tax expense (benefit)	24,218			34,321		(29.4	)%

____________

(1) The Company generally records the income related to certain operating affiliates on a three-month lag based upon the availability of the information provided by the investees.

(2) Interest expense includes costs related to our debt and collateral facilities and does not include deposit liability accretion, which is included in Net investment results - structured products.

* N/M - Not Meaningful

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Net Income (Loss) from Operating Affiliates

The following table sets forth the net income (loss) from operating affiliates for the three months ended March 31, 2015 and 2014:

	Three Months Ended				Percentage
	March 31,				Change
(U.S. dollars in thousands)	2015		2014		2015 to 2014
Net income (loss) from investment manager affiliates	$	3,739	$	26,983	(86.1	)%
Net income (loss) from strategic operating affiliates	18,929		19,302		(1.9	)%
Net income (loss) from operating affiliates	$	22,668	$	46,285	(51.0	)%

Net Income from Investment Manager Affiliates

The decrease of 86.1% principally reflects a significant decline in incentive fees generated in the fourth quarter of 2014 by several investment manager affiliates, which contrasts with the prior year quarter, where incentive fees for the managers were strong.

Net Income from Strategic Operating Affiliates

The decrease of 1.9% was largely due to marginally weaker returns in the quarter than the prior year quarter, partially offset by higher current period income related to an insurance affiliate that writes direct U.S. homeowners insurance.

Exchange Gains and Losses

The foreign exchange losses of $27.4 million in the three months ended March 31, 2015 were a result of an overall strengthening of the U.S. dollar, causing weakening of foreign asset positions, most notably assets valued in the Euro. In the three months ended March 31, 2014, foreign exchange losses of $10.4 million were a result of an overall weakening of the value of the U.S. dollar against most of our major currency exposures, particularly the U.K. sterling, the Euro and the Swiss Franc.

Corporate Operating Expenses

The increase of 21.6% was mainly a result of increases in compensation due to business expansion and professional fees primarily due to costs associated with the Acquisition as noted in Item 1, Note 3(a), "Acquisition and Disposals - Catlin Acquisition."

Net Realized and Unrealized Gains and Losses on Life Retrocession Embedded Derivative and Derivative Instruments - Life Funds Withheld Assets

The Company has entered into Life Retro Arrangements as described in Item 1, Note 3(c), "Acquisition and Disposals - Sale of Life Reinsurance Subsidiary," to the Unaudited Consolidated Financial Statements included herein. The embedded derivative is recorded at fair value with changes in fair value recognized in earnings through "Net realized and unrealized gains (losses) on life retrocession embedded derivative and derivative instruments - Life Funds Withheld Assets." For a further discussion, see Item 1, Note 7, “Derivative Instruments,” to the Unaudited Consolidated Financial Statements included herein and "Impact of Life Retro Arrangements" above.

Interest Expense

The increase of 29.0% was a result of expenses related to the Bridge Facility as outlined in Item 1, Note 3(a), "Acquisitions and Disposals - Catlin Acquisition." For further information about our debt financing, see Item 8, Note 15, “Notes Payable and Debt and Financing Arrangements,” to the Consolidated Financial Statements included in our Annual Report on Form 10-K for the year ended December 31, 2014 and Item 1, Note 10, “Notes Payable and Debt and Financing Arrangements,” to the Unaudited Consolidated Financial Statements included herein.

Income Tax Expense

Tax charges of $24.2 million and $34.3 million were incurred in the three months ended March 31, 2015 and 2014, respectively. The tax charges recognized in these periods reflect the combination of our expected full year effective tax rate applicable to each of the years, applied to our operating income in the respective periods, and the tax calculated on non-operating items. Non-operating items primarily include respective gains and losses on investments and derivative instruments, which are accounted for discretely at the applicable tax rate in the jurisdiction in which they are recognized.

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BALANCE SHEET ANALYSIS

Investments (Excluding Life Funds Withheld Assets)

We seek to generate growth in book value and net investment income through our investment activities. Our investment strategy strives to balance investment returns against market and credit risk. Our overall investment portfolio is structured to take into account a number of variables including liability profile, local regulatory requirements, business needs, collateral management and risk tolerance.

As described in Item 1, Note 3(c), "Acquisition and Disposals - Sale of Life Reinsurance Subsidiary" and Note 6, “Investments,” to the Unaudited Consolidated Financial Statements included herein, in connection with the Life Retro Arrangements certain fixed maturities were reclassified from held to maturity to available for sale. All of the reclassified securities are included within the Life Funds Withheld Assets, along with certain other available for sale securities as defined in the sale and purchase agreement for the sale of our life reinsurance subsidiary. The Life Funds Withheld Assets are managed pursuant to agreed upon investment guidelines that meet the contractual commitments of the XL ceding companies and applicable laws and regulations. All of the investment results associated with the Life Funds Withheld Assets ultimately accrue to GCLR. Because we no longer share in the risks and rewards of the underlying performance of the supporting invested assets, disclosures within the financial statement notes included herein, and in the table below, separately report the Life Funds Withheld Assets from the rest of our investments. The remaining disclosures in this section exclude the Life Funds Withheld Assets.

As of March 31, 2015 and December 31, 2014, total investments and cash and cash equivalents, including accrued investment income and net receivable/(payable) for investments sold/(purchased) but excluding Life Funds Withheld Assets, were approximately $31.5 billion and $30.8 billion, respectively. The following table summarizes the composition of our invested assets, excluding Life Funds Withheld Assets, as of March 31, 2015 and December 31, 2014:

	March 31, 2015					December 31, 2014
(U.S. dollars in thousands)	Carrying Value (1)			Percent of Total		Carrying Value (1)		Percent of Total
Cash and cash equivalents	$	3,039,708		9.6	%	$	2,327,160	7.6	%
Net receivable/ (payable) for investments sold/ (purchased)	(55,518		)	(0.2	)%	50,471		0.2	%
Accrued investment income	205,041			0.7	%	226,721		0.7	%
Short-term investments	168,862			0.5	%	256,727		0.8	%
Fixed maturities - AFS:
U.S. Government and Government-Related/Supported	3,378,342			10.7	%	2,171,953		7.1	%
Corporate - Financials (2)	2,416,752			7.7	%	2,761,916		9.0	%
Corporate - Non Financials (2)	5,737,886			18.2	%	6,016,457		19.4	%
RMBS – Agency	3,711,334			11.8	%	3,728,576		12.1	%
RMBS – Non-Agency	380,135			1.2	%	427,351		1.4	%
CMBS	1,032,720			3.3	%	1,052,544		3.4	%
CDO	500,974			1.6	%	692,034		2.2	%
Other asset-backed securities	1,167,367			3.7	%	1,065,293		3.5	%
U.S. States and political subdivisions of the States	1,973,140			6.3	%	2,021,272		6.6	%
Non-U.S. Sovereign Government, Provincial, Supranational and Government-Related/Supported	4,093,771			13.0	%	4,240,073		13.8	%
Total fixed maturities - AFS	$	24,392,421		77.5	%	$	24,177,469	78.5	%
Equity securities	783,471			2.5	%	868,292		2.8	%
Investments in affiliates	1,655,394			5.3	%	1,637,620		5.3	%
Other investments	1,328,935			4.1	%	1,248,439		4.1	%
Total investments and cash and cash equivalents - excluding Life Funds Withheld Assets	$	31,518,314		100.0	%	$	30,792,899	100.0	%

____________

(1) Carrying value represents the fair value for AFS fixed maturities and amortized cost for HTM securities.

(2) Includes certain floating rate medium term notes supported primarily by pools of European investment grade credit with varying degrees of leverage. The notes have a carrying value of $74.8 million and $79.9 million and an amortized cost of $63.8 million and $68.4 million as of March 31, 2015 and December 31, 2014, respectively. These securities have been allocated ratings of the underlying pool of securities. These notes allow the investor to participate in cash flows of the underlying bonds including certain residual values, which could serve to either decrease or increase the ultimate values of these notes.

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We review our corporate debt investments on a regular basis to consider their concentration, credit quality and compliance with established guidelines. As of March 31, 2015, the average credit quality of our total fixed income portfolio (consisting of corporate debt and U.S. Agency debt and related mortgage-backed securities, having fixed maturities and including short-term investments, cash and cash equivalents and net receivable/(payable) for investments sold/(purchased)) was “Aa2(AA),” and Aa3(AA-) as of December 31, 2014. Included in the table below are the credit ratings of the fixed income portfolio excluding operating cash as of March 31, 2015 and December 31, 2014:

	March 31, 2015				December 31, 2014
Investments by Credit Rating (1) (U.S. dollars in millions)	Carrying Value (2)		Percent of Total		Carrying Value (2)		Percent of Total
AAA	$	12,781	48.5	%	$	11,509	44.1	%
AA	4,925		18.7	%	5,334		20.4	%
A	5,688		21.6	%	6,158		23.6	%
BBB	2,199		8.4	%	2,321		8.9	%
BB and below	724		2.7	%	793		3.0	%
Not rated	25		0.1	%	15		—	%
Total	$	26,342	100.0	%	$	26,130	100.0	%

____________

(1) The credit rating for each asset reflected above was principally determined based on the weighted average rating of the individual securities from Standard & Poor's, Moody's Investors Service and Fitch Ratings (when available). U.S. Agency debt and related mortgage-backed securities, whether with implicit or explicit government support, reflect the credit quality rating of the U.S. government for the purpose of these calculations.

(2) Excludes Life Funds Withheld Assets.

Gross and Net Unrealized Gains and Losses on Investments (Excluding Life Funds Withheld Assets)

We had gross unrealized losses totaling $205.3 million on 1,347 securities out of a total of 7,586 held as of March 31, 2015 in our AFS portfolio (excluding Life Funds Withheld Assets) that we consider to be temporarily impaired. Individual security positions comprising this balance have been evaluated by management, in conjunction with our investment managers, to determine the severity of these impairments and whether they should be considered other-than-temporary.

Gross unrealized losses can be attributed to the following significant drivers:

• gross unrealized losses of $81.7 million related to Government and Government Related holdings. Securities in a gross unrealized loss position had a fair value of $1.5 billion as of March 31, 2015.

• gross unrealized losses of $50.7 million related to the Corporate holdings. Securities in a gross unrealized loss position had a fair value of $877.1 million as of March 31, 2015.

• gross unrealized losses of $18.0 million related to Non-Agency RMBS securities (which consists of our holdings of sub-prime Non-Agency RMBS, second liens, asset backed securities collateralized debt obligations ("ABS CDOs") with sub-prime collateral, Alt-A and Prime RMBS). Securities in an unrealized loss position had a fair value of $244.0 million as of March 31, 2015. The Company has incurred realized losses, consisting of charges for OTTI and realized losses from sales, of approximately $1.4 billion since the beginning of 2007 through March 31, 2015 on these asset classes.

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The following table details the security type and length of time that AFS securities were in a continual gross unrealized loss position as of March 31, 2015:

(U.S. dollars in thousands)	March 31, 2015
Security Type and Length of Time in a Continual Unrealized Loss Position (1)	Amount of Unrealized Loss			Fair Value of Securities in an Unrealized Loss Position
Fixed Maturities and Short-Term Investments
Less than 6 months	$	(42,985	)	$	1,579,419
At least 6 months but less than 12 months	(50,845		)	631,034
At least 12 months but less than 2 years	(22,230		)	591,828
2 years and over	(74,277		)	1,042,083
Total	$	(190,337	)	$	3,844,364
Equities
Less than 6 months	$	(4,779	)	$	64,630
At least 6 months but less than 12 months	(10,163		)	54,995
Total	$	(14,942	)	119,625

____________

(1) Excludes Life Funds Withheld Assets.

The following is the maturity profile of the AFS fixed income securities that were in a continual gross unrealized loss position as of March 31, 2015:

	March 31, 2015
(U.S. dollars in thousands)	Amount of Unrealized Loss			Fair Value of Securities in an Unrealized Loss Position
Maturity profile in years of AFS fixed income securities in a gross unrealized loss position (1)
Less than 1 year remaining	$	(20,369	)	$	308,722
At least 1 year but less than 5 years remaining (2)	(65,221		)	1,075,664
At least 5 years but less than 10 years remaining (2)	(36,407		)	767,167
At least 10 years but less than 20 years remaining (2)	(4,840		)	76,013
At least 20 years or more remaining (2)	(5,798		)	120,384
RMBS - Agency	(5,772		)	456,981
RMBS - Non-Agency	(17,952		)	240,808
CMBS	(3,401		)	230,186
CDO	(21,630		)	438,889
Other asset-backed securities	(8,947		)	129,550
Total	$	(190,337	)	$	3,844,364

____________

(1) Excludes Life Funds Withheld Assets.

(2) Tier One and Upper Tier Two securities, representing committed term debt and hybrid instruments senior to the common and preferred equities of the financial institutions, are allocated based on the call date unless such security is not called on such date, in which case it is allocated the final or longest expected maturity. Medium term notes supported primarily by pools of European investment grade credit with varying degrees of leverage are allocated based on contractual maturity.

Factors considered in determining that additional OTTI charges were not warranted include management's consideration of current and near term liquidity needs along with other available sources of liquidity, and in certain instances an evaluation of the factors and time necessary for recovery. For further information, see Item 1, Note 6, “Investments,” to the Unaudited Consolidated Financial Statements included herein.

As noted in Item 8, Note 2, “Significant Accounting Policies,” to the Consolidated Financial Statements included in our Annual Report on Form 10-K for the year ended December 31, 2014, the determination of the amount of OTTI varies by investment type and is based upon our periodic evaluation and assessment of known and inherent risks associated with the respective asset class. Such evaluations and assessments are revised as conditions change and new information becomes available. We consider a wide range of factors about the securities and use our best judgment in evaluating the cause of the decline in the estimated fair value of the security and in assessing the prospects for near-term recovery. Inherent in our evaluation of the security are assumptions and estimates about the operations of the issuer and its future earnings potential. We update our evaluations regularly and reflect additional impairments in net income as determinations are made. Our

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determination of the amount of the impairment taken on investments is highly subjective and could adversely impact our results of operations. There can be no assurance that we have accurately assessed the level of OTTI taken and reflected in our financial statements. Furthermore, additional impairments may need to be taken in the future. Historical trends may not be indicative of future impairments.

Levels of write down or OTTI are also impacted by our assessment of the intent to sell securities that have declined in value prior to recovery. If, due to changes in circumstances, we determine to reposition or realign portions of the portfolio and we determine not to hold certain securities in an unrealized loss position to recovery, we will incur OTTI charges, which could be significant. In addition, in our assessment of whether securities in a gross unrealized loss position are temporarily impaired, we consider the significance of the impairments.

As of March 31, 2015, we had structured securities with gross unrealized losses of $18.0 million on non-Agency RMBS, $21.6 million on core CDOs and $3.4 million on CMBS holdings. These securities are mortgage and asset-backed securities that had a fair value of $6.1 million, gross unrealized losses of $9.0 million and a cumulative fair value decline of greater than 50% of amortized cost in each case as of March 31, 2015. We have evaluated each of these securities in conjunction with our investment manager service providers and believe it is more likely than not that the issuer will be able to fund sufficient principal and interest payments to support the current amortized cost.

Refer to “Significant Items Affecting the Results of Operations” above for further discussion surrounding the impact of credit market movements on our investment portfolio.

European Sovereign Debt Crisis (Excluding Life Funds Withheld Assets)

As developed markets emerged from the global recession, several key nations within the European Union (the "E.U.") - particularly Greece, Italy, Ireland, Portugal and Spain (the “European Periphery Nations") - have carried particularly high levels of debt and have been slower to return to positive economic growth due to austerity measures implemented to lower such countries' debt levels, and a general lack of competitiveness. The European Central Bank has taken various measures and has asserted its willingness to take any measures deemed necessary to protect these sovereigns' ability to continue to fund their debt. As a result, we believe market risks associated with the European Sovereign Debt crisis have been greatly reduced.

Our exposure to this European sovereign debt crisis is from direct investment in fixed maturity securities issued by national and local governments of the European Periphery Nations, as well as from fixed maturity securities issued by certain financial and non-financial corporate entities operating within the European Periphery Nations which currently have a fair value of $130.7 million as of March 31, 2015. We continue to monitor our financial exposure to this crisis, and continually assess the impact of a potential default by any of the European Periphery Nations on their respective debt issuances, including the associated impact on non-sovereign entities in these five nations in the event of such a default.

We currently have no unfunded investment exposures or commitments to either sovereign or non-sovereign entities within the European Periphery Nations. We do invest in various alternative and private investment funds and medium term notes that from time to time may invest in securities or investments related to the European Periphery Nations. In general, such funds and medium term notes will invest in debt and/or equity securities of individual corporate issuers, securitized debt instruments and/or fixed maturity instruments issued by national governments of the European Periphery Nations. As market volatility in the European Periphery Nations has declined, we have observed that our alternative and private fund managers have increased their exposure to these countries. We estimate that, as of March 31, 2015, our aggregate exposure to European Periphery Nations via our fund investments and medium term notes did not exceed $150 million on a net basis. The exposure was diversified across issues and instruments and across the five European Periphery Nations.

In addition to the direct investment portfolio considerations discussed above, as an international (re)insurance company, European credit exposures may exist for us within unpaid losses and loss expenses recoverable and reinsurance balances receivable. For further details on these balances, including the names of our most significant reinsurance counterparties, see Item 8, Note 10, “Reinsurance,” to the Consolidated Financial Statements included in our Annual Report on Form 10-K for the year ended December 31, 2014. Other sources of potential exposure to European credit issues may exist within certain lines of insurance or reinsurance business written (including, but not limited to lines such as surety, business interruption, and political risk), or within underlying investments held in securitized financial instruments or in structured transactions in which we have an interest. We consider these potential exposures as part of our ongoing enterprise risk management processes.

Fair Value Measurements of Assets and Liabilities

As described in Item 1, Note 4, “Fair Value Measurements,” to the Unaudited Consolidated Financial Statements included herein, we have provided required disclosures by level within the fair value hierarchy of the Company’s assets and liabilities that are carried at fair value. As defined in the hierarchy, those assets and liabilities categorized as Level 3 have valuations determined using unobservable inputs. Unobservable inputs may include an entity’s own assumptions about market participant

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assumptions, applied to a modeled valuation; however, this is not the case with respect to the Company’s Level 3 assets and liabilities. The vast majority of the assets and liabilities classified as Level 3 are made up of those securities for which the values were obtained from brokers where either significant inputs were utilized in determining the values that were difficult to corroborate with observable market data or sufficient information regarding the specific inputs utilized by the broker was not obtained to support a Level 2 classification.

Controls over Valuation of Financial Instruments

We perform regular reviews of the prices received from our third party valuation sources to assess whether the prices represent a reasonable estimate of the fair value. This process is completed by investment and accounting personnel who are independent of those responsible for obtaining the valuations. The approaches we take include, but are not limited to, annual reviews of the controls of the external parties responsible for sourcing valuations that are subjected to automated tolerance checks, quarterly reviews of the valuation sources and dates, comparisons of executed sales prices to prior valuations, regular deep dives on a sample of securities across our major asset classes and monthly reconciliations between the valuations provided by our external parties and valuations provided by our third party investment managers at a portfolio level.

In addition, we assess the effectiveness of valuation controls performed by external parties responsible for sourcing appropriate valuations from third parties on our behalf. The approaches taken by these external parties to gain comfort include, but are not limited to, comparing valuations between external sources, completing recurring reviews of third party pricing services' methodologies and reviewing controls of the third party service providers to support the completeness and accuracy of the prices received. Where broker quotes are the primary source of the valuations, sufficient information regarding the specific inputs utilized by the brokers is generally not available to support a Level 2 classification. We obtain the majority of broker quoted values from third party investment managers who perform independent verifications of these valuations using pricing matrices based upon information gathered by market traders. In addition, for the majority of these securities, we compare the broker quotes to independent valuations obtained from third party pricing vendors, which may also consist of broker quotes, to assess if the prices received represent reasonable estimates of the fair values.

Valuation Methodology of Level 3 Assets and Liabilities

See Item 1, Note 4, “Fair Value Measurements,” of the Unaudited Consolidated Financial Statements included herein, for a description of the valuation methodology utilized to value Level 3 assets and liabilities, how the valuation methodology is validated as well as further details associated with various assets classified as Level 3. As of March 31, 2015, we did not have any liabilities that were carried at fair value based on Level 3 inputs other than derivative instruments in a liability position as of March 31, 2015.

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Fair Value of Level 3 Assets and Liabilities (Excluding Life Funds Withheld Assets)

As of March 31, 2015, the fair value of total assets and liabilities carried at fair value, the fair value of Level 3 assets and liabilities and the percentage of Level 3 assets to our total assets and liabilities that are carried at fair value were as follows:

(U.S. dollars in thousands)	Total Assets and Liabilities Carried at Fair Value at March 31, 2015		Fair Value of Level 3 Assets and Liabilities		Level 3 Assets and Liabilities as a Percentage of Total Assets and Liabilities Carried at Fair Value, by Class
Assets
Fixed maturities, at fair value
U.S. Government and Government Agency-Related/Supported	$	3,378,342	$	—	—	%
Corporate	8,154,638		5,861		0.1	%
RMBS – Agency	3,711,334		1,820		—	%
RMBS – Non-Agency	380,135		—		—	%
CMBS	1,032,720		—		—	%
CDO	500,974		496,923		99.2	%
Other asset-backed securities	1,167,367		2,244		0.2	%
U.S. States and political subdivisions of the States	1,973,140		—		—	%
Non-U.S. Sovereign Government, Supranational and Government-Related	4,093,771		—		—	%
Total Fixed maturities, at fair value	$	24,392,421	$	506,848	2.1	%
Equity securities, at fair value	783,471		—		—	%
Short-term investments, at fair value	168,862		—		—	%
Total investments available for sale	$	25,344,754	$	506,848	2.0	%
Cash equivalents (1)	2,228,498		—		—	%
Other investments (2)	974,583		190,097		19.5	%
Other assets (3)	257,293		12,980		5.0	%
Total assets carried at fair value	$	28,805,128	$	709,925	2.5	%
Liabilities
Financial instruments sold, but not yet purchased (4)	$	7,232	$	—	—	%
Other liabilities (5)	121,648		22,586		18.6	%
Total liabilities carried at fair value	$	128,880	$	22,586	17.5	%

____________

(1) Cash equivalents balances subject to fair value measurements include certificates of deposit and money market funds.

(2) The Other investments balances exclude certain structured transactions including certain investments in project finance transactions and a payment obligation (for further information, see Item 8, Note 8, “Other Investments,” to the Consolidated Financial Statements included in our Annual Report on Form 10-K for the year ended December 31, 2014) that has provided liquidity financing to a structured credit vehicle as a part of a third party medium term note facility. These Other investments are carried at amortized cost, which totaled $354.4 million at March 31, 2015.

(3) Other assets include derivative instruments, reported on a gross basis.

(4) Financial instruments sold, but not yet purchased, are included within “Payable for investments purchased” on the balance sheets.

(5) Other liabilities include derivative instruments, reported on a gross basis.

As of March 31, 2015, our Level 3 assets represented approximately 2.5% of our assets that are measured at fair value and represented approximately 2% of total assets. Our Level 3 liabilities represented approximately 17.5% of liabilities that are measured at fair value but less than 1% of total liabilities at March 31, 2015.

Changes in the Fair Value of Level 3 Assets and Liabilities

See Item 1, Note 4, “Fair Value Measurements,” to the Unaudited Consolidated Financial Statements included herein, for an analysis of the change in fair value of Level 3 Assets and Liabilities.

Unpaid Losses and Loss Expenses

We establish reserves to provide for estimated claims, the general expenses of administering the claims adjustment process and losses incurred but not reported. These reserves are calculated using actuarial and other reserving techniques to project the estimated ultimate net liability for losses and loss expenses. Our reserving practices and the establishment of any particular reserve reflect our judgment concerning sound financial practice and do not represent any admission of liability with respect to any claims made against us.

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Gross unpaid losses and loss expenses totaled $19.0 billion and $19.4 billion as of March 31, 2015 and December 31, 2014, respectively. The table below represents a reconciliation of our P&C unpaid losses and loss expenses for the three months ended March 31, 2015:

(U.S. dollars in thousands)	Gross unpaid losses and loss expenses			Unpaid losses and loss expenses recoverable			Net unpaid losses and loss expenses
Balance at December 31, 2014	$	19,353,243		$	(3,411,526	)	$	15,941,717
Losses and loss expenses incurred	1,049,279			(279,452		)	769,827
Losses and loss expenses (paid) / recovered	(965,016		)	128,896			(836,120		)
Foreign exchange and other	(472,242		)	47,426			(424,816		)
Balance at March 31, 2015	$	18,965,264		$	(3,514,656	)	$	15,450,608

While we regularly review the adequacy of established reserves for unpaid losses and loss expenses, no assurance can be given that actual claims made and payments related thereto will not be in excess of the amounts reserved. In the future, if such reserves develop adversely, such deficiency would have a negative impact on future results of operations. For further discussion, see “Management's Discussion and Analysis of Financial Condition and Results of Operations - Critical Accounting Policies and Estimates - 1) Unpaid Loss and Loss Expenses and Unpaid Loss and Loss Expenses Recoverable,” and Note 11, “Losses and Loss Expenses,” to the Consolidated Financial Statements included in Items 7 and 8, respectively, in our Annual Report on Form 10-K for the year ended December 31, 2014.

Unpaid Losses and Loss Expenses Recoverable and Reinsurance Balances Receivable

In the normal course of business, we seek to reduce the potential amount of loss arising from claims events by reinsuring certain levels of risk assumed in various areas of exposure with other insurers or reinsurers. While reinsurance agreements are designed to limit our losses from large exposures and permit recovery of a portion of direct unpaid losses, reinsurance does not relieve our ultimate liability to the insureds. Accordingly, the losses and loss expense reserves on the balance sheets represent our total unpaid gross losses. Unpaid losses and loss expense recoverable relates to estimated reinsurance recoveries on the unpaid loss and loss expense reserves.

The table below presents our net paid and unpaid losses and loss expenses recoverable and reinsurance balances receivable as follows:

(U.S. dollars in thousands)	March 31, 2015			December 31, 2014
Reinsurance balances receivable	$	142,372		$	153,613
Reinsurance recoverable on future policy benefits (excluding balances related to the Life Retro Arrangements)	14,675			17,840
Reinsurance recoverable on unpaid losses and loss expenses	3,544,891			3,453,873
Bad debt reserve on unpaid losses and loss expenses recoverable and reinsurance balances receivable	(54,223		)	(64,439		)
Net paid and unpaid losses and loss expenses recoverable and reinsurance balances receivable	$	3,647,715		$	3,560,887

LIQUIDITY AND CAPITAL RESOURCES

Liquidity is a measure of our ability to generate sufficient cash flows to meet the short- and long-term cash requirements of our business operations. As a global insurance and reinsurance company, one of our principal responsibilities to clients is to ensure that we have ready access to funds with which to settle claims, including large or multiple unforeseen claims. We would generally expect that positive cash flow from operations (underwriting activities and investment income) will be sufficient to cover cash outflows under most future loss scenarios. However, there is a possibility that unforeseen demands could be placed on us due to extraordinary events and, as such, our liquidity needs may change. Such events include, among other things: several significant catastrophes occurring in a relatively short period of time resulting in material incurred losses; rating agency downgrades of our core insurance and reinsurance subsidiaries that would require posting of collateral in connection with our letter of credit and revolving credit facilities; return of unearned premiums and/or the settlement of derivative transactions and large scale uncollectible reinsurance recoverables on paid losses (as a result of coverage disputes, reinsurers' credit problems or decreases in the value of collateral supporting reinsurance recoverables). Any one or a combination of such events may cause a liquidity strain for us. In addition, a liquidity strain could also occur when there is illiquidity in financial markets, such as that which was experienced in 2008. Investments that may be used to meet liquidity needs in the event of a liquidity strain may not be liquid due to inactive markets, or may have to be sold at a significant loss as a result of depressed prices. Because each subsidiary focuses on a more limited number of specific product lines than is collectively available from the consolidated group of companies, the mix of business tends to be less diverse at the subsidiary level. As a result, the probability of a liquidity strain, as described above, may be greater for individual subsidiaries than when liquidity is assessed on a consolidated basis. If

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such a liquidity strain were to occur in a subsidiary, XL-Ireland may be required to contribute capital to the particular subsidiary and/or curtail dividends from the subsidiary that would otherwise support holding company operations, which may be difficult given that XL-Ireland is a holding company and has limited liquidity.

A downgrade below “A-” of our principal insurance and reinsurance subsidiaries by either S&P or A.M. Best, which is three notches below the current S&P financial strength rating of “A+” (Stable) and two notches below the A.M. Best financial strength rating of “A” (Stable) of these subsidiaries, may trigger cancelation provisions in a significant amount of our assumed reinsurance agreements and may potentially require us to return unearned premiums to cedants. In addition, due to collateral posting requirements under our letter of credit and revolving credit facilities, such a downgrade may require the posting of cash collateral in support of certain “in use” portions of these facilities. Specifically, a downgrade below “A-” by A.M. Best would constitute an event of default under our two largest credit facilities and may trigger such collateral requirements. In certain limited instances, such downgrades may require that we return cash or assets to counterparties or to settle derivative and/or other transactions with the respective counterparties. See Item 1A, “Risk Factors,” included in our Annual Report on Form 10-K for the year ended December 31, 2014.

Holding Company Liquidity

As holding companies, XL-Ireland and XL-Cayman have no operations of their own and their assets consist primarily of investments in subsidiaries. XL-Ireland's principal uses of liquidity are ordinary share-related transactions, including dividend payments to holders of its ordinary shares as well as share buybacks, capital investments in its subsidiaries and certain corporate operating expenses. XL-Cayman's principal uses of liquidity are preference share related transactions, including dividend payments to its preference shareholders as well as preference share buybacks from time to time, interest and principal payments on debt, dividends to XL-Ireland and certain corporate operating expenses. All of our outstanding debt securities were issued by XL-Cayman.

XL-Ireland's future cash flows largely depend on the availability of dividends or other permissible payments from subsidiaries to make principal and interest payments on debt, to pay operating expenses and ordinary shareholder dividends, to make capital investments in subsidiaries and to pay other obligations that may arise from time to time. The ability of our subsidiaries to pay dividends to us or return capital from shareholders' equity is limited by applicable laws and regulations of the various jurisdictions in which we operate, certain additional required regulatory approvals and financial covenants contained in our letters of credit and revolving credit facilities. The payment of dividends by our principal operating subsidiaries is regulated under the laws of various jurisdictions including Bermuda, the U.K., Ireland and Switzerland, certain insurance statutes of various states in the United States in which the principal operating subsidiaries are licensed to transact business, the other jurisdictions where we have regulated subsidiaries and regulations of the Society of Lloyd's. See Item 8, Note 25, “Statutory Financial Data,” to the Consolidated Financial Statements included in our Annual Report on Form 10-K for the year ended December 31, 2014 for further discussion and details regarding the dividend capacity of our major operating subsidiaries. See also Item 1A, “Risk Factors - Our holding company structure and certain regulatory and other constraints affect our ability to pay dividends, make payments on our debt securities and make other payments,” included in our Annual Report on Form 10-K for the year ended December 31, 2014. No assurance can be given that our subsidiaries will pay dividends in the future to XL-Ireland and XL-Cayman.

Under Irish law, share premium was required to be converted to “distributable reserves” for XL-Ireland to pay cash dividends and redeem and buyback shares following the redomestication transaction in which all of the ordinary shares of XL-Cayman were exchanged for all of the ordinary shares of XL-Ireland. On July 23, 2010, the Irish High Court approved XL-Ireland's conversion of share premium to $5.0 billion of distributable reserves, subject to the completion of certain formalities under Irish Company law. These formalities were completed in early August 2010. As of March 31, 2015, XL-Ireland had $2.9 billion in distributable reserves.

As of March 31, 2015, XL-Ireland and XL-Cayman held cash and investments, net of liabilities associated with cash sweeping arrangements, of $15.2 million and $1.9 billion, respectively, compared to $22.4 million and $0.9 billion, respectively, as of December 31, 2014.

All of our outstanding debt as of March 31, 2015 was issued by XL-Cayman. The ability of XL-Cayman, like that of XL-Ireland, to obtain funds from its subsidiaries to satisfy any of its debts, including obligations under guarantees, is subject to certain contractual restrictions, applicable laws and statutory requirements of the various countries in which we operate, including, among others, Bermuda, the United States, Ireland, Switzerland and the United Kingdom. For details of the required statutory capital and surplus for our principal operating subsidiaries, see Item 8, Note 25, “Statutory Financial Data,” included in our Annual Report on Form 10-K for the year ended December 31, 2014.

See also the Consolidated Statements of Cash Flows in Item 1, Financial Statements included herein.

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Sources of Liquidity

As of March 31, 2015, on a consolidated basis we had cash and cash equivalents of approximately $3.2 billion as compared to approximately $2.5 billion at December 31, 2014. We have three main sources of cash flows - those provided (used) by operating activities, investing activities and financing activities:

(U.S. dollars in thousands)	March 31, 2015			March 31, 2014
Operating activities	$	34,978		$	200,068
Investing activities	$	(195,554	)	$	700,280
Financing activities	$	896,093		$	(232,310	)
Effects of exchange rate changes on foreign currency cash	$	(47,397	)	$	7,177

Operating Cash Flows

Historically, cash receipts from operations that are typically derived from the receipt of investment income on our investment portfolio as well as the net receipt of premiums less claims and expenses related to our underwriting activities have generally provided sufficient funds to pay losses as well as operating expenses of our subsidiaries and to fund dividends payable by our subsidiaries to XL-Ireland. Our operating subsidiaries provide liquidity in that premiums are generally received months or even years before losses are paid under the policies related to such premiums. Premiums and acquisition expenses are settled based on terms of trade as stipulated by an underwriting contract, and generally are received within the first year of inception of a policy when the premium is written, but can be up to three years on certain reinsurance business assumed. Operating expenses are generally paid within a year of being incurred. Claims, especially for casualty business, may take a much longer time before they are reported and ultimately settled, requiring the establishment of reserves for unpaid losses and loss expenses. Therefore, the amount of claims paid in any one year is not necessarily related to the amount of net losses incurred, as reported in the consolidated statement of income.

During the three months ended March 31, 2015, net cash flows provided by operating activities were $35.0 million compared to net cash flows provided by operating activities of $200.1 million for the same period in 2014. The decrease was driven by lower net income during the three months ended March 31, 2015 compared to the same period of 2014.

Investing Cash Flows

Generally, positive cash flow from operations and financing activities is invested in our investment portfolio, including affiliates, or the acquisition of subsidiaries.

Net cash provided by investing activities was $195.6 million in the three months ended March 31, 2015 compared to net cash used of $700.3 million for the same period in 2014. These cash flows were associated with the normal purchase and sale of portfolio investments.

Certain of our invested assets are held in trust and pledged in support of insurance and reinsurance liabilities as well as credit facilities. Such pledges are largely required by our operating subsidiaries that are “non-admitted” under U.S. state insurance regulations, in order for the U.S. cedant to receive statutory credit for reinsurance. Also, certain deposit liabilities and annuity contracts require the use of pledged assets. As further outlined in Item 1, Note 6, “Investments - Pledged Assets,” to the Unaudited Consolidated Financial Statements included herein, certain assets of the investment portfolio are pledged as collateral under our letter of credit facilities. At March 31, 2015, the Company had $15.4 billion in pledged assets which includes $1.0 billion of cash, cash equivalents and U.S. government securities held in escrow in relation to the Acquisition and the associated Bridge Facility. See "Note 3(a), "Acquisition and Disposals - Catlin Acquisition" for further information on the Bridge Facility. At December 31, 2014, the Company had $15.2 billion in pledged assets.

Financing Cash Flows

Cash flows related to financing activities include ordinary share-related transactions, the payment of dividends, the issue or repayment of preference ordinary shares, the issue or repayment of debt and deposit liability transactions. During the three months ended March 31, 2015, net cash flows provided by financing activities was $896.1 million, mainly due to the issuance of debt, compared to net cash used of $232.3 million for the same period in 2014, which was predominantly impacted by share buybacks. See "Other Key Focuses of Management - Capital Management" for information regarding the issuance of debt and share buyback activity.

In addition, the Company maintains credit facilities that provide liquidity. Details of these facilities are described below in “Capital Resources.”

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Capital Resources

As of March 31, 2015 and December 31, 2014, we had total shareholders' equity of $11.6 billion and $11.4 billion, respectively. In addition to ordinary share capital, we depend on external sources of financing to support our underwriting activities in the form of:

a. debt;

b. XL-Cayman preference shares;

c. letter of credit facilities and other sources of collateral; and

d. revolving credit facilities.

In particular, we require, among other things:

▪ sufficient capital to maintain our financial strength and credit ratings, as issued by several ratings agencies, at levels considered necessary by management to enable our key operating subsidiaries to compete;

▪ sufficient capital to enable our regulated subsidiaries to meet the regulatory capital levels required in the United States, the U.K., Bermuda, Ireland, Switzerland and other key markets;

▪ letters of credit and other forms of collateral that are required to be posted or deposited, as the case may be, by our operating subsidiaries that are “non-admitted” under U.S. state insurance regulations in order for the U.S. cedant to receive statutory credit for reinsurance. We also use letters of credit to support our operations at Lloyd's; and

▪ revolving credit facilities to meet short-term liquidity needs.

The following risks are associated with our requirement to renew or obtain new credit facilities:

▪ the credit available from banks may be reduced due to market conditions resulting in our need to pledge our investment portfolio to customers, which could result in a lower investment yield;

▪ we may be downgraded by one or more rating agencies, which could materially and negatively impact our business, financial condition, results of operations and/or liquidity; and

▪ the volume of business that our subsidiaries that are not admitted in the United States are able to transact could be reduced if we are unable to obtain letter of credit facilities at an appropriate amount.

Consolidation within the banking industry may result in the aggregate amount of credit provided to us being reduced. We attempt to mitigate this risk by identifying and/or selecting additional banks that can participate in the credit facilities upon renewal. See Item 1A, “Risk Factors - We may require additional capital in the future, which may not be available to us on satisfactory terms, on a timely basis or at all,” included in our Annual Report on Form 10-K for the year ended December 31, 2014.

The following table summarizes the components of our current capital resources as follows:

(U.S. dollars in thousands)	March 31, 2015		December 31, 2014
Non-controlling interests - Series D preference ordinary shares in XL-Cayman	$	345,000	$	345,000
Non-controlling interests - Series E preference ordinary shares in XL-Cayman	999,500		999,500
Non-controlling interests - Other	57,866		57,515
Ordinary share capital	10,244,057		10,033,751
Total ordinary shares and non-controlling interests	$	11,646,423	$	11,435,766
Notes payable and debt	2,643,561		1,662,580
Total	$	14,289,984	$	13,098,346

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Ordinary Share Capital

The following table reconciles the opening and closing ordinary share capital positions as follows:

(U.S. dollars in thousands)	March 31, 2015			December 31, 2014
Ordinary shareholders’ equity – beginning of period	$	10,033,751		$	9,997,633
Net income (loss) attributable to ordinary shareholders	36,281			188,340
Share buybacks	(1,967		)	(801,953		)
Share issues	1,793			6,406
Ordinary share dividends	(41,599		)	(172,080		)
Change in accumulated other comprehensive income	220,712			747,801
Share-based compensation and other	(4,914		)	67,604
Ordinary shareholders’ equity – end of period	$	10,244,057		$	10,033,751

Debt

The following tables present our debt under outstanding securities and lenders' commitments as of March 31, 2015:

						Payments Due by Period
(U.S. dollars in thousands)	Commitment/ Debt		In Use/ Outstanding		Year of Expiry	Less than 1 Year		1 to 3 Years		3 to 5 Years		After 5 Years
5-year revolver	$	1,000,000	$	—	2018	$	—	$	—	$	—	$	—
2.30% Senior Notes	300,000		297,512		2018	—		—		300,000		—
5.75% Senior Notes	400,000		397,200		2021	—		—		—		400,000
6.375% Senior Notes	350,000		348,947		2024	—		—		—		350,000
4.45% Subordinated Notes	500,000		492,224		2025	—		—		—		500,000
6.25% Senior Notes	325,000		323,101		2027	—		—		—		325,000
5.25% Senior Notes	300,000		296,195		2043	—		—		—		300,000
5.5% Subordinated Notes	500,000		488,382		2045	—		—		—		500,000
	$	3,675,000	$	2,643,561		$	—	$	—	$	300,000	$	2,375,000

“In Use/Outstanding” data represent March 31, 2015 accreted values. “Payments Due by Period” data represents ultimate redemption values.

In addition, see Item 8, Note 15, “Notes Payable and Debt and Financing Arrangements,” to the Consolidated Financial Statements included in our Annual Report on Form 10-K for the year ended December 31, 2014 for further information.

As of March 31, 2015, banks and investors provided us with $3.7 billion of debt capacity, of which $2.6 billion was utilized. This debt capacity consists of:

▪ a revolving credit facility of $1.0 billion; and

▪ senior unsecured notes of approximately $2.6 billion issued by XL-Cayman. These notes require XL-Cayman to pay a fixed rate of interest during their terms. As of March 31, 2015, the outstanding issues of unsecured notes is as follows:

▪ $300 million senior notes due December 2018, with a fixed coupon of 2.30%. The notes are listed on the New York Stock Exchange. The notes were issued at 99.69% of the face amount and net proceeds were $296.6 million. Related expenses of the offering amounted to $2.5 million.

▪ $400 million senior notes due October 2021, with a fixed coupon of 5.75%. The notes are listed on the New York Stock Exchange. The notes were issued at 100.0% of the face amount and net proceeds were $395.7 million. Related expenses of the offering amounted to $4.3 million.

▪ $350 million senior notes due November 2024, with a fixed coupon of 6.375%. The notes are publicly traded. The notes were issued at 100.0% of the face amount and net proceeds were $347.8 million. Related expenses of the offering amounted to $2.2 million.

▪ $500 million subordinated notes due March 2025, with a fixed coupon of 4.45%. The notes are listed on the New York Stock Exchange. The notes were issued at 99.633% of the face amount and net proceeds were $492.2 million. Related expenses of the offering amounted to $5.9 million.

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▪ $325 million senior notes due May 2027, with a fixed coupon of 6.25%. The notes are publicly traded. The notes were issued at 99.805% of the face amount and net proceeds were $321.9 million. Related expenses of the offering amounted to $2.5 million.

▪ $300 million senior notes due December 2043, with a fixed coupon of 5.25%. The notes are listed on the New York Stock Exchange. The notes were issued at 99.77% of the face amount and net proceeds were $296.0 million. Related expenses of the offering amounted to $3.3 million.

▪ $500 million subordinated notes due March 2045, with a fixed coupon of 5.5%. The notes are listed on the New York Stock Exchange. The notes were issued at 99.115% of the face amount and net proceeds were $488.4 million. Related expenses of the offering amounted to $7.2 million.

As of March 31, 2015, $575 million of letters of credit were issued under the 2013 Citi Agreements (as defined below) and therefore this facility is not available for revolving credit loans.

Preferred Shares - Non-controlling Interest in Equity of Consolidated Subsidiaries

The Series D preference ordinary shares and the Series E preference ordinary shares were issued by XL-Cayman. Accordingly, these instruments represent non-controlling interests in our consolidated financial statements and are presented as non-controlling interest in equity of consolidated subsidiaries. As of both March 31, 2015 and December 31, 2014, the face values of the outstanding Series D and Series E preference ordinary shares were $345.0 million and $999.5 million, respectively.

Letter of Credit Facilities and other sources of collateral

As of March 31, 2015, we had eight letter of credit (“LOC”) facilities in place with total availability of $3.6 billion, of which $1.7 billion was utilized.

						Amount of Commitment Expiration by Period
(U.S. dollars in thousands)	Commitment/ Debt		In Use/ Outstanding		Year of Expiry	Less than 1 Year		1 to 3 Years		3 to 5 Years		After 5 Years
LOC Facility (1) (2)	$	1,000,000	$	23,229	2018	$	—	$	—	$	1,000,000	$	—
LOC Facility (2)	1,000,000		741,425		2018	—		—		1,000,000		—
LOC Facility	600,000		150,277		Continuous	—		—		—		600,000
LOC Facility	250,000		131,299		Continuous	—		—		—		250,000
LOC Facility (3)	275,000		275,000		2015	275,000		—		—		—
LOC Facility (3)	200,000		200,000		2015	200,000		—		—		—
LOC Facility (3)	100,000		100,000		2016	—		100,000		—		—
LOC Facility	150,000		122,000		Continuous	—		—		—		150,000
Total LOC facilities	$	3,575,000	$	1,743,230		$	475,000	$	100,000	$	2,000,000	$	1,000,000

____________

(1) This letter of credit facility includes $1.0 billion that is also included in the “5-year revolver” listed under Debt. See the discussion regarding the Syndicated Credit Agreements (defined below).

(2) We have the option to increase the size of the facilities under the Syndicated Credit Agreements by an additional $500 million across both such facilities.

(3) We have the option to increase the maximum amount of letters of credit and revolving credit loans available under the 2013 Citi Agreements (defined below), with the lender's and issuing lender's consent.

In November 2013, we (i) entered into two new credit agreements (together, the "Syndicated Credit Agreements"), which provided for an aggregate amount of outstanding letters of credit and revolving credit loans of up to $2 billion, subject to certain options to increase the size of the facilities, and (ii) terminated the secured credit agreements dated March 25, 2011 and December 9, 2011, and the unsecured credit agreement dated December 9, 2011, which had provided for an aggregate amount of outstanding letters of credit and revolving credit loans of up to $3 billion.

The Syndicated Credit Agreements consist of (i) a secured credit agreement, which provides for the issuance of up to $1 billion of letters of credit and (ii) an unsecured credit agreement, which provides for the issuance of up to $1 billion of letters of credit and revolving credit loans. We have the option to increase the maximum amount of letters of credit available by an additional $500 million across the facilities under the Syndicated Credit Agreements.

The commitments under the Syndicated Credit Agreements expire on, and such credit facilities are available until, the earlier of (i) November 22, 2018 and (ii) the date of termination in whole of the commitments upon an optional termination or reduction of the commitments by the account parties or upon the occurrence of certain events of default.

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The availability of letters of credit under the secured portion of the Syndicated Credit Agreements is subject to a borrowing base requirement, determined on the basis of specified percentages of the face value of eligible categories of assets varying by type of collateral. In the event that such credit support is insufficient, we could be required to provide alternative security to cedants. This could take the form of insurance trusts supported by our investment portfolio or funds withheld (amounts retained by ceding companies to collateralize loss or premium reserves) using our cash resources or combinations thereof. The face amount of letters of credit required is driven by, among other things, loss development of existing reserves, the payment pattern of such reserves, the expansion of business written by us and the loss experience of such business.

On May 7, 2013, XL-Cayman entered into a new credit agreement with Citicorp USA, Inc., as administrative agent and issuing lender, and the lenders party thereto, and a continuing agreement for standby letters of credit with Citibank, N.A. On May 13, 2013 and May 15, 2013, XL-Cayman entered into a first amendment and a second amendment, respectively, to such credit agreement (as amended, the “May 2013 Credit Agreement”).

On August 6, 2013, XL-Cayman entered into a new credit agreement with Citicorp USA, Inc., as administrative agent and issuing lender, and the lenders party thereto and a continuing agreement for standby letters of credit with Citibank, N.A. On September 12, 2013, XL-Cayman entered into a first amendment to such credit agreement (as amended, the “August 2013 Credit Agreement”).

Additionally, on November 4, 2013, XL-Cayman entered into a new credit agreement with Citicorp USA, Inc., as administrative agent and issuing lender, and the lenders party thereto and a continuing agreement for standby letters of credit with Citibank, N.A. (the "November 2013 Credit Agreement" and, together with the May 2013 Credit Agreement and the August 2013 Credit Agreement, the "2013 Citi Agreements").

Collectively, the 2013 Citi Agreements and the continuing agreements for standby letters of credit provide for issuance of letters of credit and revolving credit loans in an aggregate amount of up to $575 million. XL-Cayman has the option to increase the maximum amount of letters of credit and revolving credit loans available under the 2013 Citi Agreements with the lender's and issuing lender's consent.

The commitments under the 2013 Citi Agreements expire on, and such credit facilities are available until, the earlier of (i) June 20, 2015 (with respect to the May 2013 Credit Agreement), September 20, 2015 (with respect to the August 2013 Credit Agreement) and December 20, 2016 (with respect to the November 2013 Credit Agreement) and (ii) the date of termination in whole of the commitments upon an optional termination or reduction of the commitments by the account parties or upon the occurrence of certain events of default.

On December 30, 2014, we reduced the commitments available under a continuous letter of credit facility between XL Insurance (Bermuda) Ltd. and Citibank Europe plc from $750 million to $600 million simultaneous with XL Insurance (Bermuda) Ltd. entering into a continuous $150 million letter of credit facility with ING Bank N.V., London Branch.

In addition to letters of credit, we have established insurance trusts in the United States that provide cedants with statutory credit for reinsurance under state insurance regulation in the United States.

We review current and projected collateral requirements on a regular basis, as well as new sources of collateral. Our objective is to maintain an excess amount of collateral sources over expected uses. We also review our liquidity needs on a regular basis.

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ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

General

The following discussion should be read in conjunction with “Quantitative and Qualitative Disclosures about Market Risk,” presented under Item 7A, “Quantitative and Qualitative Disclosures About Market Risk,” included in our Annual Report on Form 10-K for the year ended December 31, 2014. This discussion does not reflect our market risks related to Catlin, which we acquired on May 1, 2015.

This risk management discussion and the estimated amounts generated from the sensitivity and VaR analyses presented in this document are forward-looking statements of market risk assuming certain adverse market conditions occur. Actual results in the future may differ materially from these estimated results due to, among other things, actual developments in the global financial markets and changes in the composition of our investment portfolio. The results of analysis used by us to assess and mitigate risk should not be considered projections of future events of losses. See Item 2, “Cautionary Note Regarding Forward-Looking Statements.”

As described in Item 1, Note 3(c), "Acquisition and Disposals - Sale of Life Reinsurance Subsidiary," and Note 6, “Investments,” to the Unaudited Consolidated Financial Statements included herein, in connection with the Life Retro Arrangements, certain fixed maturities were reclassified from held to maturity to available for sale. All of the reclassified securities are included within the Life Funds Withheld Assets, along with certain other available for sale securities as defined in the sale and purchase agreement between XLIB and GreyCastle. The Life Funds Withheld Assets are managed pursuant to agreed upon investment guidelines that meet the contractual commitments of the XL ceding companies and applicable laws and regulations. All of the investment results associated with the Life Funds Withheld Assets ultimately accrue to GCLR. Because we no longer share in the risks and rewards of the underlying performance of the supporting invested assets, quantitative and qualitative disclosures about market risk exclude the Life Funds Withheld Assets.

Market risk represents the potential for loss due to adverse changes in the fair value of financial and other instruments. We are principally exposed to the following market risks: interest rate risk, foreign currency exchange rate risk, credit risk, equity price risk and other related market risks.

The majority of our market risk arises from the investment portfolio, which consists of fixed income securities, alternative investments, public equities, private investments, derivatives, other investments and cash, denominated in both U.S. and foreign currencies, which are sensitive to changes in interest rates, credit spreads, equity prices, foreign currency exchange rates and other related market risks. Our fixed income and equity securities are generally classified as available for sale, and, as such, changes in interest rates, credit spreads on corporate and structured securities, equity prices, foreign currency exchange rates or other related market instruments will have an immediate effect on comprehensive income and shareholders' equity but will not ordinarily have an immediate effect on net income. Nevertheless, changes in interest rates, credit spreads and defaults, equity prices and other related market instruments affect consolidated net income when, and if, a security is sold or impaired.

We may enter into derivatives to reduce risk or enhance portfolio efficiency. For example, we may use derivatives to hedge foreign exchange and interest rate risk related to our consolidated net exposures or to efficiently gain exposure to investments that are eligible under our Investment Policy. From time to time, we may also use instruments such as futures, options, interest rate swaps, credit default swaps and foreign currency forward contracts to manage the risk of interest rate changes, credit deterioration, foreign currency exposures, and other market related exposures as well as to obtain exposure to a particular financial market. We seek to manage the risks associated with the use of derivatives through our comprehensive framework of investment decision authorities (“Authorities Framework”). Derivative instruments are carried at fair value with the resulting changes in fair value recognized in income in the period in which they occur. For further information, see Item 1, Note 7, “Derivative Instruments,” to the Unaudited Consolidated Financial Statements included herein.

Interest Rate Risk (Excluding Life Funds Withheld Assets)

Interest rate risk is the price sensitivity of a fixed income security to changes in interest rates. Our fixed income portfolio is exposed to interest rate risk. Our liabilities are accrued at a static rate from an accounting standpoint. However, management considers the liabilities to have an economic exposure to interest rate risk and manages the net economic exposure to interest rate risk considering both assets and liabilities. Interest rate risk is managed within the context of our Strategic Asset Allocation ("SAA") process by specifying a SAA benchmark relative to the estimated duration of our liabilities and managing the fixed income portfolio relative to the benchmarks such that the overall economic effect of interest rate risk is within management's risk tolerance. Nevertheless, we remain exposed to interest rate risk with respect to our overall net asset position and more generally from an accounting standpoint since the assets are carried at fair value, while liabilities are accrued at a static rate. We may utilize derivative instruments via an interest rate overlay strategy to manage or optimize our duration and curve exposures.

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In addition, while our debt is not carried at fair value and not adjusted for market changes, changes in market interest rates could have an impact on debt values at the time of any refinancing.

As of March 31, 2015 and December 31, 2014, bond index futures outstanding had net long positions of $256.2 million and $410.2 million, respectively, and stock index futures outstanding had a net short position of $178.1 million and a net long position of $3.8 million, respectively. We may reduce our exposure to these futures through offsetting transactions, including options and forwards.

Foreign Currency Exchange Rate Risk (Excluding Life Funds Withheld Assets)

Many of our non-U.S. subsidiaries maintain both assets and liabilities in local currencies; therefore, foreign exchange risk is generally limited to net assets denominated in foreign currencies.

Foreign currency exchange rate gains and losses in our consolidated Statements of Income arise for accounting purposes when net assets or liabilities are denominated in foreign currencies that differ from the functional currency of those subsidiaries. While unrealized foreign exchange gains and losses on underwriting balances are reported in earnings, the offsetting unrealized gains and losses on invested assets are recorded as a separate component of shareholders' equity, to the extent that the asset currency does not match that entity's functional currency. This results in an accounting mismatch that will result in foreign exchange gains or losses in the consolidated statements of income depending on the movement in certain currencies. We have formed several branches with Euro and U.K. sterling functional currencies and continue to focus on attempting to limit exposure to foreign exchange risk.

Foreign currency exchange rate risk in general is reviewed as part of our risk management framework. Within the asset liability framework for the investment portfolio, we pursue a general policy of holding the assets and liabilities in the same currency and, as such, we are not generally exposed to the risks associated with foreign exchange movements within the investment portfolio, as currency impacts on the assets are generally matched by corresponding impacts on the related liabilities. However, locally-required capital levels are invested in local currencies in order to satisfy regulatory requirements and to support local insurance operations and are not matched by related liabilities. Foreign exchange contracts within the investment portfolio may be utilized to manage individual portfolio foreign exchange exposures, subject to investment management service providers' guidelines established by management. Where these contracts are not designated as specific hedges for financial reporting purposes, we record realized and unrealized gains and losses in income in the period in which they occur. These contracts generally have maturities of three months or less. We may also attempt to manage the foreign exchange volatility arising on certain transactions denominated in foreign currencies. These include, but are not limited to, premiums receivable, reinsurance contracts, claims payable and investments in subsidiaries.

The principal currencies creating our foreign exchange risk are the U.K. sterling, the Euro, the Swiss franc and the Canadian dollar. The following table provides more information on our net exposures to these principal foreign currencies as of March 31, 2015 and December 31, 2014:

(Foreign currency in millions)	March 31, 2015	December 31, 2014
Euro	182.5	129.7
U.K. Sterling	195.0	139.4
Swiss Franc	132.2	155.7
Canadian Dollar	208.8	190.4

Credit Risk (Excluding Life Funds Withheld Assets)

Credit risk relates to the uncertainty of an obligor's continued ability to make timely payments in accordance with the contractual terms of the instrument or contract. We are exposed to direct credit risk within our investment portfolio, through general counterparties, including customers and reinsurers, and through certain underwriting activities that include, but are not limited to, surety, workers' compensation, environmental and political risk and trade credit.

We have an established credit risk governance process delegated to the Credit Subcommittee of the Enterprise Risk Management Committee. The governance process is designed to ensure that transactions and activities, individually and in the aggregate, are carried out within established risk tolerances. This process also recognizes the potential for clash event risk (which covers a number of substantially similar claims against multiple policyholders) that could arise from credit events owing to the identified credit risk embedded in certain underwriting businesses, as well as our investment activities and reinsurance relationships. In particular, certain of our underwriting activities expose us to indirect credit risk in that profitability of certain strategies can correlate with credit events at the issuer, industry or country level. We manage these risks through established underwriting policies that operate in accordance with established limit and escalation frameworks.

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To manage our exposure to credit risk, we have established a credit risk framework that establishes tolerances for credit risk at various levels of granularity (counterparty, industry, country and underwriting business) and tolerances for credit risk arising from certain clash events. Credit risk capacity is allocated across our businesses and functional areas and regular reporting and aggregation activities are carried out to ensure compliance with our credit risk framework and related tolerances. Credit risk arising from credit sensitive underwriting activities is also managed via our underwriting limit framework. We manage credit risk within the investment portfolio through our Authorities Framework and established investment credit policies, which address the quality of obligors and counterparties, industry limits, and diversification requirements. Our exposure to market credit spreads primarily relates to market price and cash flow variability associated with changes in credit spreads.

Credit Risk – Investment Portfolio (Excluding Life Funds Withheld Assets)

Credit risk in the investment portfolio is the exposure to adverse changes in the creditworthiness of individual investment holdings, issuers, groups of issuers, industries and countries. A widening of credit spreads will increase the net unrealized loss position, will increase losses associated with credit-based derivatives where we assume credit exposure, and, if issuer credit spreads increase significantly for an extended period of time or it is a period of increasing defaults, will also likely result in higher OTTI charges. All else held equal, credit spread tightening will reduce net investment income associated with new purchases of fixed maturities. In addition, market volatility can make it difficult to value certain of our securities if trading becomes less frequent. As such, valuations may include assumptions or estimates that may have significant period to period changes that could have a material adverse effect on our consolidated results of operations or financial condition. The credit spread duration in our fixed income portfolio was 3.3 years as of March 31, 2015.

We manage credit risk in the investment portfolio, including fixed income, alternative and short-term investments, through the credit research performed primarily by the investment management service providers. The management of credit risk in the investment portfolio is integrated in our credit risk management governance framework and the management of credit exposures and concentrations within the investment portfolio is carried out in accordance with our risk policies, philosophies, appetites, limits and risk concentrations related to the investment portfolio. In the investment portfolio, we review on a regular basis our asset concentration, credit quality and adherence to our credit limit guidelines. Any issuer over its credit limits or experiencing financial difficulties, material credit quality deterioration or potentially subject to forthcoming credit quality deterioration is placed on a watch list for closer monitoring. Where appropriate, exposures are reduced or prevented from increasing.

The table below shows our aggregate fixed income portfolio by credit rating in percentage terms of our aggregate fixed income portfolio (consisting of corporate debt and U.S. Agency debt and related mortgage-backed securities having and including fixed maturities, short-term investments, cash and cash equivalents and net receivable/(payable) for investment sold/(purchased)) as of March 31, 2015:

	Percentage of Aggregated Fixed Income Portfolio (1)(2)
AAA	48.5	%
AA	18.7	%
A	21.6	%
BBB	8.4	%
BB or Below	2.7	%
NR	0.1	%
Total	100.0	%

____________

(1) The credit ratings above were principally determined based on the weighted average rating of the individual securities from Standard & Poor's, Moody's Investors Service and Fitch Ratings (where available). The credit ratings for U.S. Agency debt and related mortgage-backed securities, whether with implicit or explicit government support, reflects the credit quality rating of the U.S. government for the purpose of these calculations.

(2) Excludes Life Funds Withheld Assets.

As of March 31, 2015, the average credit quality of our aggregate fixed income investment portfolio was “Aa2(AA)." Our $11.2 billion portfolio of government and government related, agency, sovereign and cash holdings was rated "AA+," our $8.2 billion portfolio of corporates was rated “A," and our $6.8 billion structured securities portfolio was rated "AA+."

We are closely monitoring our corporate financial bond holdings given the events of the past six years. The table below summarizes our significant exposures (defined as bonds issued by financial institutions with an amortized cost in excess of $50.0 million) to corporate bonds of financial issuers including Covered Bonds held within our investment portfolio as of March 31, 2015, representing both amortized cost and net unrealized gains (losses):

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	March 31, 2015
Issuer (by Global Ultimate Parent) (1)(2) (U.S. dollars in millions)	Weighted Average Credit Quality (3)	Amortized Cost		Unrealized Gain/ (Loss)
WELLS FARGO & COMPANY	A+	$	163.8	$	6.9
JPMORGAN CHASE & CO.	A	139.9		5.5
CITIGROUP INC.	A-	136.5		5.3
BANK OF AMERICA CORPORATION	BBB+	119.0		2.9
THE GOLDMAN SACHS GROUP, INC.	A-	111.0		7.3
RABOBANK NEDERLAND NV.	AA-	105.2		4.4
THE PNC FINANCIAL SERVICES GROUP, INC.	A	83.5		1.9
LLOYDS BANKING GROUP PLC	AA+	80.1		4.0
COMMONWEALTH BANK OF AUSTRALIA	AA+	75.8		1.9
UBS GROUP AG	AA	74.9		2.6
BB&T CORPORATION	A	73.8		1.1
HSBC HOLDINGS PLC	A+	73.7		1.1
WESTPAC BANKING CORPORATION	AA	68.3		3.1
U.S. BANCORP	A+	64.2		1.1
BANK OF MONTREAL	AA	62.1		1.4
BNP PARIBAS	A+	54.7		0.9
ING GROEP N.V.	AA-	54.5		1.5
NATIONAL AUSTRALIA BANK LIMITED	AA	53.2		2.0
THE BANK OF NOVA SCOTIA	AA	50.5		0.8

____________

(1) Includes Covered Bonds.

(2) Excludes Life Funds Withheld Assets.

(3) The credit rating for each asset reflected above was principally determined based on the weighted average rating of the individual securities from Standard & Poor's, Moody's Investors Service and Fitch Ratings (where available). U.S. Agency debt and related mortgage-backed securities, whether with implicit or explicit government support, reflect the credit quality rating of the U.S. government for the purpose of these calculations

As of March 31, 2015, the top 10 corporate financial holdings, which exclude government guaranteed and government sponsored enterprises, represented approximately 4.2% of the aggregate fixed income portfolio and approximately 13.3% of all corporate holdings. The top 10 corporate bond holdings listed below represent the direct exposure to the corporations listed below, including their subsidiaries, and exclude any securitized, credit enhanced and collateralized asset or mortgage-backed securities, cash and cash equivalents, pooled notes and any over-the-counter (“OTC”) derivative counterparty exposures, if applicable, but does include Covered Bonds:

Top 10 Corporate Financial Holdings (1)(2)	Percentage of Aggregate Fixed Income Portfolio
WELLS FARGO & COMPANY	0.6%
JPMORGAN CHASE & CO.	0.5%
CITIGROUP INC.	0.5%
BANK OF AMERICA CORPORATION	0.5%
THE GOLDMAN SACHS GROUP, INC.	0.4%
RABOBANK NEDERLAND NV	0.4%
THE PNC FINANCIAL SERVICES GROUP, INC.	0.3%
LLOYDS BANKING GROUP PLC	0.3%
COMMONWEALTH BANK OF AUSTRALIA	0.3%
UBS Group AG	0.3%

____________

(1) Corporate issuers include Covered Bonds.

(2) Excludes Life Funds Withheld Assets.

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As of March 31, 2015, the top 5 corporate sector exposures listed below represented 23.8% of the aggregate fixed income investment portfolio and 76.2% of all corporate holdings.

Top 5 Sector Exposures (1) (U.S. dollars in millions)	Carrying Value		Percentage of Aggregate Fixed Income Portfolio
Financials (2)	$	2,417.1	9.2	%
Consumer, non-Cyclical	1,592.6		6.0	%
Industrial	790.7		3.0	%
Utilities	759.2		2.9	%
Consumer, Cyclical	718.0		2.7	%
Total	$	6,277.6	23.8	%

____________

(1) Excludes Life Funds Withheld Assets.

(2) Government-guaranteed securities and Covered Bonds have been excluded from the above figures.

We also have exposure to credit risk associated with our mortgage-backed and asset-backed securities. The table below shows the breakdown of the $6.8 billion structured securities portfolio, of which 87.3% is AAA rated:

(U.S. dollars in millions)	Carrying Value (1)		Percentage of Structured Portfolio
Agency RMBS	$	3,711.3	54.6	%
Other ABS (2)	380.1		5.6	%
CMBS	1,032.7		15.2	%
Core CDO (non-ABS CDOs and CLOs)	501.0		7.4	%
Non-Agency RMBS	1,167.4		17.2	%
Total	$	6,792.5	100.0	%

____________

(1) Excludes Life Funds Withheld Assets.

(2) Includes Covered Bonds.

Credit Risk – Other (Excluding Life Funds Withheld Assets)

Credit derivatives are purchased within our investment portfolio. From time to time, we may purchase credit default swaps to hedge an existing position or concentration of holdings. The credit derivatives are recorded at fair value. For further details with respect to our exposure to credit derivatives, see Item 1, Note 7, “Derivative Instruments,” to the Unaudited Consolidated Financial Statements included herein.

We have exposure to many different industries and counterparties, and routinely execute transactions with counterparties in the financial services industry, including brokers and dealers, commercial banks, investment banks, alternatives and other investment funds and other institutions. Many of these transactions expose us to credit risk in the event of default of our counterparty. In addition, with respect to secured transactions, our credit risk may be exacerbated when the collateral held by us cannot be sold or is liquidated at prices not sufficient to recover the full amount of the loan or derivative exposure that is due. We also have exposure to financial institutions in the form of unsecured debt instruments, derivative transactions, revolving credit facility and letter of credit commitments and equity investments. There can be no assurance that any such losses or impairments to the carrying value of these assets would not materially and adversely affect our business and results of operations.

With regard to unpaid losses and loss expenses recoverable and reinsurance balances receivable, we have credit risk should any of our reinsurers be unable or unwilling to settle amounts due to us; however, these exposures are not marked to market. For further information relating to reinsurer credit risk, see Item 2, “Management's Discussion and Analysis of Financial Condition and Results of Operations - Unpaid Losses and Loss Expenses Recoverable and Reinsurance Balances Receivable.”

We are exposed to credit risk in the event of non-performance by the other parties to our derivative instruments in general; however, we do not anticipate non-performance. The difference between the notional principal amounts and the associated market value is our maximum credit exposure.

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Equity Price Risk (Excluding Life Funds Withheld Assets)

Equity price risk is the potential loss arising from changes in the market value of equities. Our equity investment portfolio is exposed to equity price risk. As of March 31, 2015, our equity portfolio was approximately $782.6 million as compared to $789.1 million at December 31, 2014. This excludes fixed income fund investments of $0.9 million and $79.2 million as of March 31, 2015 and December 31, 2014, respectively, that generally do not have the risk characteristics of equity investments but are treated as equity investments under U.S. GAAP. As of March 31, 2015 and December 31, 2014, our direct allocation to equity securities was 2.5% and 2.4%, respectively, of the total investment portfolio (including cash and cash equivalents, accrued investment income and net payable for investments purchased). We also estimate the equity risk embedded in certain alternative and private investments. Such estimates are derived from market exposures provided to us by certain individual fund investments and/or internal statistical analyses.

Other Market Risks (Excluding Life Funds Withheld Assets)

Our private investment portfolio is invested in limited partnerships and other entities that are not publicly traded. In addition to normal market risks, these positions may also be exposed to liquidity risk, risks related to distressed investments and risks specific to startup or small companies. As of March 31, 2015, our exposure to private investments, excluding unfunded commitments, was $341.0 million, representing 1.1% of the total investment portfolio (including cash and cash equivalents, accrued investment income and net payable for investments purchased) compared to $325.2 million as of December 31, 2014.

Our alternative investment portfolio, which is exposed to equity and credit risk as well as certain other market risks, had a total exposure of $1.7 billion representing approximately 5.5% of the total investment portfolio (including cash and cash equivalents, accrued investment income and net payable for investments purchased) as of March 31, 2015, as compared to December 31, 2014 when we had a total exposure of $1.7 billion representing approximately 5.6% of the total investment portfolio.

As noted above, we also invest in certain derivative positions that can be impacted by market value movements. For further details on derivative instruments, see Item 1, Note 7, “Derivative Instruments,” to the Unaudited Consolidated Financial Statements included herein.

Sensitivity and Value-at-Risk Analysis (Excluding Life Funds Withheld Assets)

The table below summarizes our assessment of the estimated impact on the value of our investment portfolio as of March 31, 2015 associated with an immediate and hypothetical: +100bps increase in interest rates, a -10% decline in equity markets, a +100bps widening in spreads and a +10% widening in spreads. The table also reports the 95%, 1-year VaRs for our investment portfolios as of March 31, 2015, excluding foreign exchange. The interest rate, spread risk, and VaR shown in the table below exclude Life Funds Withheld Assets.

The table below excludes the impact of foreign exchange rate risk on our investment portfolio. Our investment strategy incorporates asset-liability management, and, accordingly, any foreign exchange movements impact the assets and liabilities approximately equally. See “Foreign Currency Exchange Rate Risk” for further details. We consider the investment portfolio VaR estimated results excluding foreign exchange rate risk to be the more relevant and appropriate metric to consider when assessing the actual risk of the investment portfolio.

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The estimated results below also do not include any risk contributions from our various operating affiliates (strategic, investment manager or financial operating affiliates) or certain other investments that are carried at amortized cost.

(U.S. dollars in millions)	Interest Rate Risk (1)			Equity Risk (2)			Absolute Spread Risk (3)			Relative Spread Risk (4)			VaR (5) (6)
Total Investment Portfolio (7)	$	(975.2	)	$	(205.2	)	$	(917.6	)	$	(67.0	)	$	870.8
(I) Fixed Income Portfolio	(970.0		)	—			(873.1		)	(62.1		)	816.3
(a) Cash & Short Term Investments	(19.7		)	—			(6.8		)	(0.2		)	23.1
(b) Total Government Related	(423.4		)	—			(244.1		)	(6.6		)	350.9
(c) Total Corporate Credit	(320.5		)	—			(347.9		)	(34.8		)	306.8
(d) Total Structured Credit	(206.3		)	—			(274.2		)	(20.6		)	166.1
(II) Non-Fixed Income Portfolio	—			(205.2		)	—			—			249.6
(e) Equity Portfolio	—			(79.1		)	—			—			132.1
(f) Alternative Portfolio	—			(87.0		)	—			—			122.6
(g) Private Investments	—			(39.1		)	—			—			38.2
(h) Other	—			—			—			—			—

____________

(1) The estimated impact on the fair value of our fixed income portfolio of an immediate hypothetical +100 bps adverse parallel shift in global bond curves.

(2) The estimated impact on the fair value of our investment portfolio of an immediate hypothetical -10% change in the value of equity exposures in our equity portfolio, certain equity-sensitive alternative investments and private equity investments. This includes our estimate of equity risk embedded in the alternatives and private investment portfolio with such estimates utilizing market exposures provided to us by certain individual fund investments, internal statistical analyses, and/or various assumptions regarding illiquidity and concentrations.

(3) The estimated impact on the fair value of our fixed income portfolio of an immediate hypothetical +100 basis point increase in all global government related, corporate and structured security spreads to which our fixed income portfolio is exposed. This excludes exposure to credit spreads in our alternative investments, private investments and counterparty exposure.

(4) The estimated impact on the fair value of our fixed income portfolio of an immediate hypothetical +10% increase in all global government related, corporate and structured security spreads to which our fixed income portfolio is exposed. This excludes exposure to credit spreads in our alternative investments, private investments and counterparty exposure.

(5) The VaR results are based on a 95% confidence interval, with a one-year holding period, excluding foreign exchange rate risk. Our investment portfolio VaR as of March 31, 2015 is not necessarily indicative of future VaR levels as these are based on statistical estimates of possible price changes and, therefore, exclude other sources of investment return such as coupon and dividend income.

(6) The VaR results are the standalone VaRs, based on the prescribed methodology, for each component of our Total Investment Portfolio. The standalone VaRs of the individual components are non-additive, with the difference between the summation of the individual component VaRs and their respective aggregations being due to diversification benefits across the individual components. In the case of the VaR results for our Total Investment Portfolio, the results also include the impact associated with our Business and Other investments.

(7) Our Total Investment Portfolio also includes our Business and Other investments that do not form part of our Fixed Income Portfolio or Non-Fixed Income Portfolio. The individual results reported in the above table for our Total Investment Portfolio therefore represent the aggregate impact on our Fixed Income Portfolio, Non-Fixed Income Portfolio and the majority of our Other investments.

Stress Testing (Excluding Life Funds Withheld Assets)

VaR does not provide the means to estimate the magnitude of the loss in the 5% of occurrences when we expect the VaR level to be exceeded. To complement the VaR analysis based on normal market environments, we consider the impact on the investment portfolio in several different stress scenarios to analyze the effect of unusual market conditions. We establish certain stress scenarios that are applied to the actual investment portfolio. As these stress scenarios and estimated gains and losses are based on scenarios established by us, they will not necessarily reflect future stress events or gains and losses from such events. The results of the stress scenarios are reviewed on a regular basis to ensure they are appropriate, based on current shareholders' equity, market conditions and our total risk tolerance. It is important to note that, when assessing the risk of our investment portfolio, we do not take into account either the value or risk associated with the liabilities arising from our operations.

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Life Funds Withheld Assets

The table below shows the Life Funds Withheld Assets by credit rating in percentage terms as of March 31, 2015:

	Percentage of Aggregated Fixed Income Portfolio (1)
AAA	13.2	%
AA	29.3	%
A	32.0	%
BBB	24.0	%
BB or Below	1.5	%
Total	100.0	%

____________

(1) The credit ratings above were principally determined based on the weighted average rating of the individual securities from Standard & Poor's, Moody's Investors Service and Fitch Ratings (where available). The credit ratings for U.S. Agency debt and related mortgage-backed securities, whether with implicit or explicit government support, reflect the credit quality rating of the U.S. government for the purpose of these calculations.

As of March 31, 2015, the average credit quality of the Life Funds Withheld Assets was “A+".

As of March 31, 2015, the top 5 corporate sector exposures listed below represented 49.5% of the Life Funds Withheld Assets.

Top 5 Sector Exposures (U.S. dollars in millions)	Carrying Value		Percentage of Aggregate Fixed Income Portfolio
Financials (1)	$	806.9	16.0	%
Utilities	666.5		13.2	%
Consumer, non-Cyclical	430.3		8.5	%
Communications	345.7		6.8	%
Industrial	254.2		5.0	%
Total	$	2,503.6	49.5	%

____________

(1) Government-guaranteed securities and Covered Bonds have been excluded from the above figures.

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ITEM 4. CONTROLS AND PROCEDURES

Conclusion Regarding the Effectiveness of Disclosure Controls and Procedures

Our management, with the participation of our Chief Executive Officer and Chief Financial Officer, evaluated the effectiveness of our disclosure controls and procedures as of the end of the period covered by this report. Based on that evaluation, the Chief Executive Officer and Chief Financial Officer concluded that our disclosure controls and procedures, as of the end of the period covered by this report, were effective and provided reasonable assurance that the information required to be disclosed by us in reports filed under the Securities Exchange Act of 1934, as amended, is (i) recorded, processed, summarized, and reported within the time periods specified in the SEC's rules and forms, and (ii) accumulated and communicated to our management, including the Chief Executive Officer and Chief Financial Officer, as appropriate to allow timely decisions regarding required disclosure.

Changes in Internal Control Over Financial Reporting

There have been no changes in internal control over financial reporting identified in connection with our evaluation required pursuant to Rules 13a-15 or 15d-15 promulgated under the Securities Exchange Act of 1934, as amended, that occurred during the most recent fiscal quarter 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

We are subject to legal proceedings as described in our Annual Report on Form 10-K for the year ended December 31, 2014. There have been no material developments to such proceedings during the three months ended March 31, 2015.

We are subject to litigation and arbitration in the normal course of our business. These lawsuits and arbitrations principally involve claims on policies of insurance and contracts of reinsurance and are typical for us and for the property and casualty insurance and reinsurance industry in general. Such claims proceedings are considered in connection with our loss and loss expense reserves. Reserves in varying amounts may or may not be established in respect of particular claims proceedings based on many factors, including the legal merits thereof. In addition to litigation relating to insurance and reinsurance claims, we are subject to lawsuits and regulatory actions in the normal course of business that do not arise from or directly relate to claims on insurance or reinsurance policies. These types of actions typically involve, among other things, allegations of underwriting errors or misconduct, employment disputes, actions brought by or on behalf of shareholders or disputes arising from business ventures. The status of these legal actions is actively monitored by management.

Legal actions are subject to inherent uncertainties, and future events could change management's assessment of the probability or estimated amount of potential losses from pending or threatened legal actions. If management believes that, based on available information, it is at least reasonably possible that a material loss (or additional material loss in excess of any accrual) will be incurred in connection with any legal actions, we disclose an estimate of the possible loss or range of loss, either individually or in the aggregate, as appropriate, if such an estimate can be made, or disclose that an estimate cannot be made. Based on our assessment as of March 31, 2015, no such disclosures are considered necessary.

ITEM 1A. RISK FACTORS

Refer to Item 1A., "Risk Factors," in our Annual Report on Form 10-K for the year ended December 31, 2014 for further information.

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

Purchases of Equity Securities by the Issuer and Affiliate Purchasers

The following table provides information about purchases by the Company during the three months ended March 31, 2015 of its ordinary shares:

	Total Number of Shares Purchased(1)	Average Price Paid per Share		Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs	Approximate Dollar Value of Shares that May Yet Be Purchased Under the Plans or Programs (1) (2)
January 1, 2015 to January 31, 2015	4,016	$	34.37	—	$267.6 million
February 1, 2015 to February 28, 2015	724	$	34.49	—	$267.6 million
March 1, 2015 to March 31, 2015	49,818	$	36.20	—	$267.6 million
Total	54,558	$	36.04	—	$267.6 million

____________

(1) Shares purchased in connection with the vesting of restricted shares granted under our restricted stock plan do not represent shares purchased as part of publicly announced plans or programs. All such purchases were made in connection with satisfying tax withholding obligations of those employees. These shares were not purchased as part of our share buyback program.

(2) For information regarding our share buyback activity see Part I, Item 2, "Management's Discussion and Analysis of Financial Condition and Results of Operations - Other Key Focuses of Management - Buybacks of Ordinary Shares," included herein.

ITEM 6.	EXHIBITS
The following exhibits are filed as exhibits to this Quarterly Report:
2.1	Implementation Agreement, dated January 9, 2015, among XL Group plc, Green Holdings Limited and Catlin Group Limited, incorporated by reference to Exhibit 2.1 to the Company's Form 8-K (No. 1-10804) filed on January 9, 2015.
2.2	Merger Agreement, dated as of January 9, 2015, among XL Group plc, Green Holdings Limited and Catlin Group Limited, incorporated by reference to Exhibit 2.2 to the Company's Form 8-K (No. 1-10804) filed on January, 9, 2015.
4.1	Base Indenture, dated March 30, 2015, among XL Group plc, XLIT Ltd., and Wells Fargo Bank, National Association, as trustee, incorporated by reference to Exhibit 4.1 to the Company's Form 8-K (No. 1-10804 filed on March, 30, 2015.
4.2	First Supplemental Indenture, dated March 30, 2015, to the Base Indenture, among XL Group plc, XLIT Ltd., and Wells Fargo Bank, National Association, as trustee, incorporated by reference to Exhibit 4.2 to the Company's 8-K (No. 1-10804) filed on March 30, 2015.
4.3	Form of 4.450% Subordinated Note due 2025, incorporated by reference to Exhibit 4.2 to the Company's Form 8-K (No. 1-10804) filed on March 30, 2015.
4.4	Form of 5.500% Subordinated Note due 2045, incorporated by reference to Exhibit 4.2 to the Company's Form 8-K (No. 1-10804) filed on March 30, 2015.
4.7	Replacement Capital Covenant, dated March 30, 2015, incorporated by reference to Exhibit 4.7 to the Company's Form 8-K (No. 1-10804) filed on March 30, 2015.
10.1	First Amendment, dated February 11, 2015, to the Secured Credit Agreement, dated as of November 22, 2013, between XL Group plc, XLIT Ltd., X.L. America, Inc., XL Insurance (Bermuda) Ltd, XL Re Ltd, XL Re Europe plc, XL Insurance Company plc, XL Insurance Switzerland Ltd and XL Life Ltd, as Account Parties, XL Group plc, XLIT Ltd., X.L. America, Inc., XL Insurance (Bermuda) Ltd, XL Re Ltd and XL Life Ltd, as Guarantors, the Lenders party thereto, JPMorgan Chase Bank, N.A., as Administrative Agent and The Bank of New York Mellon, as Collateral Agent, incorporated by reference to Exhibit 10.74 to the Company's Annual Report on Form 10-K (No. 1-10804) for the year ended December 31, 2014.

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10.2	First Amendment, dated February 11, 2015, to the Unsecured Credit Agreement, dated as of November 22, 2013, between XL Group plc, XLIT Ltd., X.L. America, Inc., XL Insurance (Bermuda) Ltd, XL Re Ltd, XL Re Europe plc, XL Insurance Company plc, XL Insurance Switzerland Ltd and XL Life Ltd, as Guarantors, the Lenders party thereto, and JPMorgan Chase Bank, N.A., as Administrative Agent, incorporated by reference to Exhibit 10.76 to the Company's Annual Report on Form 10-K (No. 1-10804) for the year ended December 31, 2014.
10.3	Form of Director Irrevocable Undertaking, incorporated by reference to Exhibit 2.3 to the Company's Form 8-K filed on January 9, 2015.
10.4	364-Day Bridge Loan Agreement, dated as of January 9, 2015, among XLIT Ltd., as borrower, XL Group plc, X.L. America, Inc., XL Insurance (Bermuda) Ltd, XL Re Ltd, and XL Life Ltd, as guarantors, Morgan Stanley Senior Funding, Inc., as administrative agent, and the lenders party thereto, incorporated by reference to Exhibit 2.4 to the Company's Form 8-K (No. 1-10804) filed on January 9, 2015.
12*	Statements regarding computation of ratios
31*	Rule 13a-14(a)/15d-14(a) Certifications
32*	Section 1350 Certification
101.INS*	XBRL Instance Document
101.SCH*	XBRL Taxonomy Extension Schema Document
101.CAL*	XBRL Taxonomy Extension Calculation Linkbase Document
101.LAB*	XBRL Taxonomy Extension Label Linkbase Document
101.PRE*	XBRL Taxonomy Extension Presentation Linkbase Document
101.DEF*	XBRL Taxonomy Extension Definition Linkbase Document

* Filed herewith.

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SIGNATURES

Pursuant to the requirements of the Securities and Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

Date:	May 11, 2015
		XL Group plc
		(Registrant)
		/s/ MICHAEL S. MCGAVICK
		Name: Michael S. McGavick
		Title: Chief Executive Officer and Director
		XL Group plc
Date:	May 11, 2015
		/s/ PETER R. PORRINO
		Name: Peter R. Porrino
		Title: Executive Vice President and Chief Financial Officer
		XL Group plc

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EX-12

Exhibit 12

XL GROUP PLC

COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES AND RATIO OF EARNINGS TO COMBINED FIXED CHARGES AND PREFERENCE DIVIDENDS

	Three Months Ended March 31,
(U.S. dollars in thousands, except ratios)	2015		2014
Earnings:
Pre-tax income (loss) from continuing operations	$	39,892	$	246,209
Fixed charges	89,747		81,164
Distributed income of equity investees	24,570		98,006
Subtotal	$	154,209	$	425,379
Less: Non-controlling interests	1,957		346
Preference share dividends	35,433		35,413
Total earnings (loss)	$	116,819	$	389,620
Fixed charges:
Interest costs	$	41,481	$	32,160
Accretion of deposit liabilities	9,957		10,781
Rental expense at 30% (1)	2,876		2,810
Total fixed charges	$	54,314	$	45,751
Preference share dividends	35,433		35,413
Total fixed charges and preference dividends	$	89,747	$	81,164
Ratio of earnings to fixed charges	2.2		8.5
Ratio of earnings to combined fixed charges and preference dividends	1.3		4.8
Deficiency - fixed charges only	N/A		N/A
Deficiency - fixed charges and preference dividends	N/A		N/A

_______________

(1) 30% represents a reasonable approximation of the interest factor.

EX-31

Exhibit 31

Certification of Chief Executive Officer

XL Group plc

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

(Chapter 98, Title 15 U.S.C. 7241)

I, Michael S. McGavick, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q of XL Group plc;

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.

Dated:	May 11, 2015
		/s/ MICHAEL S. MCGAVICK
		Michael S. McGavick
		Chief Executive Officer

Certification of Chief Financial Officer

XL Group plc

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

(Chapter 98, Title 15 U.S.C. 7241)

I, Peter R. Porrino, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q of XL Group plc;

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.

Dated:	May 11, 2015
		/s/ PETER R. PORRINO
		Peter R. Porrino
		Executive Vice President and
		Chief Financial Officer

EX-32

Exhibit 32

Certification Accompanying Form 10-Q of XL Group plc

Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

(Chapter 63, Title 18 U.S.C. 1350(a) and (b))

Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (Chapter 63, Title 18 U.S.C. 1350(a) and (b)), each of the undersigned hereby certifies that, to his knowledge, the Quarterly Report on Form 10-Q for the period ended March 31, 2015 of XL Group plc (the “Company”) fully complies with the requirements of Section 13(a) or Section 15(d) of the Securities Exchange Act of 1934 and that the information contained in such Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Dated:	May 11, 2015
/s/ MICHAEL S. MCGAVICK
Michael S. McGavick
Chief Executive Officer
XL Group plc
Dated:	May 11, 2015
/s/ PETER R. PORRINO
Peter R. Porrino
Executive Vice President and
Chief Financial Officer
XL Group plc

A signed original of this written statement required by Section 906, or other document authenticating, acknowledging, or otherwise adopting the signature that appears in typed form within the electronic version of this written statement required by Section 906, has been provided to XL Group plc and will be retained by XL Group plc and furnished to the Securities and Exchange Commission or its staff upon request.

XML

Fair Value Measurements - Schedule of assets and liabilities that were accounted for at fair value (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015		Dec. 31, 2014
Assets
Fixed maturities, at fair value	$ 29,110,400		$ 29,359,034
Equity securities, at fair value	783,471		868,292
Short-term investments, at fair value	168,862		256,727
Total investments available for sale	30,062,733		30,484,053
Fixed maturities, trading at fair value	139,377		1,171
Collateral and counterparty netting, assets	(587)	[1]	(696)	[1]
Liabilities
Funds withheld on life retrocession arrangements (net of future policy benefit reserves recoverable)	1,138,652		1,155,016
Collateral and counterparty nettings, liabilities	(587)	[1]	(696)	[1]
Recurring
Assets
Total investments available for sale	30,062,733		30,484,053
Cash equivalents	2,228,498	[2]	1,501,832
Other investments	974,583	[3]	894,057	[3]
Other assets	257,293	[1]	135,963	[1]
Total assets accounted for at fair value	33,783,993		33,150,274
Liabilities
Funds withheld on life retrocession arrangements (net of future policy benefit reserves recoverable)	654,561	[4]	450,831	[4]
Financial instruments sold, but not yet purchased	7,232	[5]	30,406	[5]
Other liabilities	121,648	[1]	30,488	[1]
Total liabilities accounted for at fair value	783,441		511,725
Recurring | Quoted prices in active markets for identical assets (Level 1)
Assets
Total investments available for sale	497,496		502,284
Cash equivalents	1,835,344	[2]	1,103,877
Other investments	0	[3]	0	[3]
Other assets	0	[1]	0	[1]
Total assets accounted for at fair value	2,333,628		1,606,621
Liabilities
Funds withheld on life retrocession arrangements (net of future policy benefit reserves recoverable)	0	[4]	0	[4]
Financial instruments sold, but not yet purchased	1,572	[5]	4,737	[5]
Other liabilities	0	[1]	0	[1]
Total liabilities accounted for at fair value	1,572		4,737
Recurring | Significant other observable inputs (Level 2)
Assets
Total investments available for sale	29,058,389		29,280,719
Cash equivalents	393,154	[2]	397,955
Other investments	784,486	[3]	708,974	[3]
Other assets	244,900	[1]	122,996	[1]
Total assets accounted for at fair value	30,741,027		30,644,553
Liabilities
Funds withheld on life retrocession arrangements (net of future policy benefit reserves recoverable)	654,561	[4]	450,831	[4]
Financial instruments sold, but not yet purchased	5,660	[5]	25,669	[5]
Other liabilities	99,649	[1]	7,757	[1]
Total liabilities accounted for at fair value	759,870		484,257
Recurring | Significant other unobservable inputs (Level 3)
Assets
Total investments available for sale	506,848		701,050
Cash equivalents	0	[2]	0
Other investments	190,097	[3]	185,083	[3]
Other assets	12,980	[1]	13,663	[1]
Total assets accounted for at fair value	709,925		899,796
Liabilities
Funds withheld on life retrocession arrangements (net of future policy benefit reserves recoverable)	0	[4]	0	[4]
Financial instruments sold, but not yet purchased	0	[5]	0	[5]
Other liabilities	22,586	[1]	23,427	[1]
Total liabilities accounted for at fair value	22,586		23,427
Excluding Life Funds Withheld Assets
Assets
Fixed maturities, at fair value	24,392,421		24,177,469
Equity securities, at fair value	783,471		868,292
Short-term investments, at fair value	168,862		256,727
Total investments available for sale	25,344,754		25,302,488
Excluding Life Funds Withheld Assets | U.S. Government and Government - Related/Supported
Assets
Fixed maturities, at fair value	3,378,342		2,171,953
Excluding Life Funds Withheld Assets | Corporate
Assets
Fixed maturities, at fair value	8,154,638	[6]	8,778,373	[7]
Excluding Life Funds Withheld Assets | RMBS - Agency
Assets
Fixed maturities, at fair value	3,711,334		3,728,576
Excluding Life Funds Withheld Assets | RMBS - Non-Agency
Assets
Fixed maturities, at fair value	380,135		427,351
Excluding Life Funds Withheld Assets | Commercial mortgage-backed securities
Assets
Fixed maturities, at fair value	1,032,720		1,052,544
Excluding Life Funds Withheld Assets | Collateralized debt obligations
Assets
Fixed maturities, at fair value	500,974		692,034
Excluding Life Funds Withheld Assets | Other asset-backed securities
Assets
Fixed maturities, at fair value	1,167,367		1,065,293
Excluding Life Funds Withheld Assets | US States and political subdivisions of the States
Assets
Fixed maturities, at fair value	1,973,140		2,021,272
Excluding Life Funds Withheld Assets | Non-U.S. Sovereign Government, Provincial, Supranational, and Government-Related/Supported
Assets
Fixed maturities, at fair value	4,093,771		4,240,073
Excluding Life Funds Withheld Assets | Recurring
Assets
Fixed maturities, at fair value	24,392,421		24,177,469
Equity securities, at fair value	783,471		868,292
Short-term investments, at fair value	168,862	[8],[9]	256,727	[8],[9]
Total investments available for sale	25,344,754		25,302,488
Excluding Life Funds Withheld Assets | Recurring | U.S. Government and Government - Related/Supported
Assets
Fixed maturities, at fair value	3,378,342		2,171,953
Excluding Life Funds Withheld Assets | Recurring | Corporate
Assets
Fixed maturities, at fair value	8,154,638	[8]	8,778,373	[8]
Excluding Life Funds Withheld Assets | Recurring | RMBS - Agency
Assets
Fixed maturities, at fair value	3,711,334		3,728,576
Excluding Life Funds Withheld Assets | Recurring | RMBS - Non-Agency
Assets
Fixed maturities, at fair value	380,135		427,351
Excluding Life Funds Withheld Assets | Recurring | Commercial mortgage-backed securities
Assets
Fixed maturities, at fair value	1,032,720		1,052,544
Excluding Life Funds Withheld Assets | Recurring | Collateralized debt obligations
Assets
Fixed maturities, at fair value	500,974		692,034
Excluding Life Funds Withheld Assets | Recurring | Other asset-backed securities
Assets
Fixed maturities, at fair value	1,167,367		1,065,293
Excluding Life Funds Withheld Assets | Recurring | US States and political subdivisions of the States
Assets
Fixed maturities, at fair value	1,973,140		2,021,272
Excluding Life Funds Withheld Assets | Recurring | Non-U.S. Sovereign Government, Provincial, Supranational, and Government-Related/Supported
Assets
Fixed maturities, at fair value	4,093,771		4,240,073
Excluding Life Funds Withheld Assets | Recurring | Quoted prices in active markets for identical assets (Level 1)
Assets
Fixed maturities, at fair value	0		0
Equity securities, at fair value	497,496		502,284
Short-term investments, at fair value	0	[8],[9]	0	[8],[9]
Total investments available for sale	497,496		502,284
Excluding Life Funds Withheld Assets | Recurring | Quoted prices in active markets for identical assets (Level 1) | U.S. Government and Government - Related/Supported
Assets
Fixed maturities, at fair value	0		0
Excluding Life Funds Withheld Assets | Recurring | Quoted prices in active markets for identical assets (Level 1) | Corporate
Assets
Fixed maturities, at fair value	0	[8]	0	[8]
Excluding Life Funds Withheld Assets | Recurring | Quoted prices in active markets for identical assets (Level 1) | RMBS - Agency
Assets
Fixed maturities, at fair value	0		0
Excluding Life Funds Withheld Assets | Recurring | Quoted prices in active markets for identical assets (Level 1) | RMBS - Non-Agency
Assets
Fixed maturities, at fair value	0		0
Excluding Life Funds Withheld Assets | Recurring | Quoted prices in active markets for identical assets (Level 1) | Commercial mortgage-backed securities
Assets
Fixed maturities, at fair value	0		0
Excluding Life Funds Withheld Assets | Recurring | Quoted prices in active markets for identical assets (Level 1) | Collateralized debt obligations
Assets
Fixed maturities, at fair value	0		0
Excluding Life Funds Withheld Assets | Recurring | Quoted prices in active markets for identical assets (Level 1) | Other asset-backed securities
Assets
Fixed maturities, at fair value	0		0
Excluding Life Funds Withheld Assets | Recurring | Quoted prices in active markets for identical assets (Level 1) | US States and political subdivisions of the States
Assets
Fixed maturities, at fair value	0		0
Excluding Life Funds Withheld Assets | Recurring | Quoted prices in active markets for identical assets (Level 1) | Non-U.S. Sovereign Government, Provincial, Supranational, and Government-Related/Supported
Assets
Fixed maturities, at fair value	0		0
Excluding Life Funds Withheld Assets | Recurring | Significant other observable inputs (Level 2)
Assets
Fixed maturities, at fair value	23,885,573		23,476,419
Equity securities, at fair value	285,975		366,008
Short-term investments, at fair value	168,862	[8],[9]	256,727	[8],[9]
Total investments available for sale	24,340,410		24,099,154
Excluding Life Funds Withheld Assets | Recurring | Significant other observable inputs (Level 2) | U.S. Government and Government - Related/Supported
Assets
Fixed maturities, at fair value	3,378,342		2,171,953
Excluding Life Funds Withheld Assets | Recurring | Significant other observable inputs (Level 2) | Corporate
Assets
Fixed maturities, at fair value	8,148,777	[8]	8,772,479	[8]
Excluding Life Funds Withheld Assets | Recurring | Significant other observable inputs (Level 2) | RMBS - Agency
Assets
Fixed maturities, at fair value	3,709,514		3,726,666
Excluding Life Funds Withheld Assets | Recurring | Significant other observable inputs (Level 2) | RMBS - Non-Agency
Assets
Fixed maturities, at fair value	380,135		427,351
Excluding Life Funds Withheld Assets | Recurring | Significant other observable inputs (Level 2) | Commercial mortgage-backed securities
Assets
Fixed maturities, at fair value	1,032,720		1,052,544
Excluding Life Funds Withheld Assets | Recurring | Significant other observable inputs (Level 2) | Collateralized debt obligations
Assets
Fixed maturities, at fair value	4,051		4,076
Excluding Life Funds Withheld Assets | Recurring | Significant other observable inputs (Level 2) | Other asset-backed securities
Assets
Fixed maturities, at fair value	1,165,123		1,060,005
Excluding Life Funds Withheld Assets | Recurring | Significant other observable inputs (Level 2) | US States and political subdivisions of the States
Assets
Fixed maturities, at fair value	1,973,140		2,021,272
Excluding Life Funds Withheld Assets | Recurring | Significant other observable inputs (Level 2) | Non-U.S. Sovereign Government, Provincial, Supranational, and Government-Related/Supported
Assets
Fixed maturities, at fair value	4,093,771		4,240,073
Excluding Life Funds Withheld Assets | Recurring | Significant other unobservable inputs (Level 3)
Assets
Fixed maturities, at fair value	506,848		701,050
Equity securities, at fair value	0		0
Short-term investments, at fair value	0	[8],[9]	0	[8],[9]
Total investments available for sale	506,848		701,050
Excluding Life Funds Withheld Assets | Recurring | Significant other unobservable inputs (Level 3) | U.S. Government and Government - Related/Supported
Assets
Fixed maturities, at fair value	0		0
Excluding Life Funds Withheld Assets | Recurring | Significant other unobservable inputs (Level 3) | Corporate
Assets
Fixed maturities, at fair value	5,861	[8]	5,894	[8]
Excluding Life Funds Withheld Assets | Recurring | Significant other unobservable inputs (Level 3) | RMBS - Agency
Assets
Fixed maturities, at fair value	1,820		1,910
Excluding Life Funds Withheld Assets | Recurring | Significant other unobservable inputs (Level 3) | RMBS - Non-Agency
Assets
Fixed maturities, at fair value	0		0
Excluding Life Funds Withheld Assets | Recurring | Significant other unobservable inputs (Level 3) | Commercial mortgage-backed securities
Assets
Fixed maturities, at fair value	0		0
Excluding Life Funds Withheld Assets | Recurring | Significant other unobservable inputs (Level 3) | Collateralized debt obligations
Assets
Fixed maturities, at fair value	496,923		687,958
Excluding Life Funds Withheld Assets | Recurring | Significant other unobservable inputs (Level 3) | Other asset-backed securities
Assets
Fixed maturities, at fair value	2,244		5,288
Excluding Life Funds Withheld Assets | Recurring | Significant other unobservable inputs (Level 3) | US States and political subdivisions of the States
Assets
Fixed maturities, at fair value	0		0
Excluding Life Funds Withheld Assets | Recurring | Significant other unobservable inputs (Level 3) | Non-U.S. Sovereign Government, Provincial, Supranational, and Government-Related/Supported
Assets
Fixed maturities, at fair value	0		0
Life Funds Withheld Assets
Assets
Fixed maturities, at fair value	4,717,979		5,181,565
Fixed maturities, trading at fair value	139,377		1,171
Life Funds Withheld Assets | U.S. Government and Government - Related/Supported
Assets
Fixed maturities, at fair value	17,613		18,724
Life Funds Withheld Assets | Corporate
Assets
Fixed maturities, at fair value	2,746,226	[6]	2,817,980	[7]
Fixed maturities, trading at fair value	137,438		1,171
Life Funds Withheld Assets | RMBS - Agency
Assets
Fixed maturities, at fair value	2,130		3,782
Life Funds Withheld Assets | RMBS - Non-Agency
Assets
Fixed maturities, at fair value	38,808		85,335
Life Funds Withheld Assets | Commercial mortgage-backed securities
Assets
Fixed maturities, at fair value	159,257		193,167
Life Funds Withheld Assets | Other asset-backed securities
Assets
Fixed maturities, at fair value	244,140		273,541
Fixed maturities, trading at fair value	1,939
Life Funds Withheld Assets | Non-U.S. Sovereign Government, Provincial, Supranational, and Government-Related/Supported
Assets
Fixed maturities, at fair value	1,509,805		1,789,036
Life Funds Withheld Assets | Recurring
Assets
Fixed maturities, at fair value	4,717,979		5,181,565
Fixed maturities, trading at fair value	139,377		1,171
Cash equivalents	121,509	[2]	133,198	[2]
Life Funds Withheld Assets | Recurring | U.S. Government and Government - Related/Supported
Assets
Fixed maturities, at fair value	17,613		18,724
Life Funds Withheld Assets | Recurring | Corporate
Assets
Fixed maturities, at fair value	2,746,226		2,817,980
Fixed maturities, trading at fair value	137,438		1,171
Life Funds Withheld Assets | Recurring | RMBS - Agency
Assets
Fixed maturities, at fair value	2,130		3,782
Life Funds Withheld Assets | Recurring | RMBS - Non-Agency
Assets
Fixed maturities, at fair value	38,808		85,335
Life Funds Withheld Assets | Recurring | Commercial mortgage-backed securities
Assets
Fixed maturities, at fair value	159,257		193,167
Life Funds Withheld Assets | Recurring | Other asset-backed securities
Assets
Fixed maturities, at fair value	244,140		273,541
Fixed maturities, trading at fair value	1,939
Life Funds Withheld Assets | Recurring | Non-U.S. Sovereign Government, Provincial, Supranational, and Government-Related/Supported
Assets
Fixed maturities, at fair value	1,509,805		1,789,036
Life Funds Withheld Assets | Recurring | Quoted prices in active markets for identical assets (Level 1)
Assets
Fixed maturities, at fair value	0		0
Fixed maturities, trading at fair value	0		0
Cash equivalents	788	[2]	460	[2]
Life Funds Withheld Assets | Recurring | Quoted prices in active markets for identical assets (Level 1) | U.S. Government and Government - Related/Supported
Assets
Fixed maturities, at fair value	0		0
Life Funds Withheld Assets | Recurring | Quoted prices in active markets for identical assets (Level 1) | Corporate
Assets
Fixed maturities, at fair value	0		0
Fixed maturities, trading at fair value	0		0
Life Funds Withheld Assets | Recurring | Quoted prices in active markets for identical assets (Level 1) | RMBS - Agency
Assets
Fixed maturities, at fair value	0		0
Life Funds Withheld Assets | Recurring | Quoted prices in active markets for identical assets (Level 1) | RMBS - Non-Agency
Assets
Fixed maturities, at fair value	0		0
Life Funds Withheld Assets | Recurring | Quoted prices in active markets for identical assets (Level 1) | Commercial mortgage-backed securities
Assets
Fixed maturities, at fair value	0		0
Life Funds Withheld Assets | Recurring | Quoted prices in active markets for identical assets (Level 1) | Other asset-backed securities
Assets
Fixed maturities, at fair value	0		0
Fixed maturities, trading at fair value	0
Life Funds Withheld Assets | Recurring | Quoted prices in active markets for identical assets (Level 1) | Non-U.S. Sovereign Government, Provincial, Supranational, and Government-Related/Supported
Assets
Fixed maturities, at fair value	0		0
Life Funds Withheld Assets | Recurring | Significant other observable inputs (Level 2)
Assets
Fixed maturities, at fair value	4,717,979		5,181,565
Fixed maturities, trading at fair value	139,377		1,171
Cash equivalents	120,721	[2]	132,738	[2]
Life Funds Withheld Assets | Recurring | Significant other observable inputs (Level 2) | U.S. Government and Government - Related/Supported
Assets
Fixed maturities, at fair value	17,613		18,724
Life Funds Withheld Assets | Recurring | Significant other observable inputs (Level 2) | Corporate
Assets
Fixed maturities, at fair value	2,746,226		2,817,980
Fixed maturities, trading at fair value	137,438		1,171
Life Funds Withheld Assets | Recurring | Significant other observable inputs (Level 2) | RMBS - Agency
Assets
Fixed maturities, at fair value	2,130		3,782
Life Funds Withheld Assets | Recurring | Significant other observable inputs (Level 2) | RMBS - Non-Agency
Assets
Fixed maturities, at fair value	38,808		85,335
Life Funds Withheld Assets | Recurring | Significant other observable inputs (Level 2) | Commercial mortgage-backed securities
Assets
Fixed maturities, at fair value	159,257		193,167
Life Funds Withheld Assets | Recurring | Significant other observable inputs (Level 2) | Other asset-backed securities
Assets
Fixed maturities, at fair value	244,140		273,541
Fixed maturities, trading at fair value	1,939
Life Funds Withheld Assets | Recurring | Significant other observable inputs (Level 2) | Non-U.S. Sovereign Government, Provincial, Supranational, and Government-Related/Supported
Assets
Fixed maturities, at fair value	1,509,805		1,789,036
Life Funds Withheld Assets | Recurring | Significant other unobservable inputs (Level 3)
Assets
Fixed maturities, at fair value	0		0
Fixed maturities, trading at fair value	0		0
Cash equivalents	0	[2]	0	[2]
Life Funds Withheld Assets | Recurring | Significant other unobservable inputs (Level 3) | U.S. Government and Government - Related/Supported
Assets
Fixed maturities, at fair value	0		0
Life Funds Withheld Assets | Recurring | Significant other unobservable inputs (Level 3) | Corporate
Assets
Fixed maturities, at fair value	0		0
Fixed maturities, trading at fair value	0		0
Life Funds Withheld Assets | Recurring | Significant other unobservable inputs (Level 3) | RMBS - Agency
Assets
Fixed maturities, at fair value	0		0
Life Funds Withheld Assets | Recurring | Significant other unobservable inputs (Level 3) | RMBS - Non-Agency
Assets
Fixed maturities, at fair value	0		0
Life Funds Withheld Assets | Recurring | Significant other unobservable inputs (Level 3) | Commercial mortgage-backed securities
Assets
Fixed maturities, at fair value	0		0
Life Funds Withheld Assets | Recurring | Significant other unobservable inputs (Level 3) | Other asset-backed securities
Assets
Fixed maturities, at fair value	0		0
Fixed maturities, trading at fair value	0
Life Funds Withheld Assets | Recurring | Significant other unobservable inputs (Level 3) | Non-U.S. Sovereign Government, Provincial, Supranational, and Government-Related/Supported
Assets
Fixed maturities, at fair value	$ 0		$ 0

[1] Other assets and other liabilities include derivative instruments. The derivative balances included in each category are reported on a gross basis by level with a netting adjustment presented separately in the Collateral and Counterparty Netting column. The fair values of the individual derivative contracts are reported gross in their respective levels based on the fair value hierarchy. For further details regarding derivative fair values and associated collateral received or paid see Note 7, “Derivative Instruments,” to the Unaudited Consolidated Financial Statements.

[2] Cash equivalents balances subject to fair value measurement include certificates of deposit and money market funds. Operating cash balances are not subject to recurring fair value measurement guidance.

[3] The Other investments balance excludes certain structured transactions including certain investments in project finance transactions, a payment obligation and liquidity financing provided to a structured credit vehicle as a part of a third party medium term note facility. These investments, which totaled $354.4 million as of March 31, 2015 and $354.4 million at December 31, 2014, are carried at amortized cost. For further information, see Item 8, Note 8, “Other Investments,” to the Consolidated Financial Statements included in our Annual Report on Form 10-K for the year ended December 31, 2014.

[4] Funds withheld on life retrocession arrangements (net of future policy benefit reserves recoverable) include balances related to the life retrocession embedded derivative, under which all investment results associated with the Life Funds Withheld Assets related to the Life Retro Arrangements described in Note 3(c), ”Acquisition and Disposals - Sale of Life Reinsurance Subsidiary," accrue to the benefit of GCLR.

[5] Financial instruments sold, but not yet purchased, represent “short sales” and are included within “Payable for investments purchased” on the balance sheets.

[6] Included are certain medium term notes supported primarily by pools of European investment grade credit with varying degrees of leverage. The notes have a fair value of $74.8 million and an amortized cost of $63.8 million. These notes allow the investor to participate in cash flows of the underlying bonds including certain residual values, which could serve to either decrease or increase the ultimate values of these notes.

[7] Included are certain medium term notes supported primarily by pools of European investment grade credit with varying degrees of leverage. The notes have a fair value of $79.9 million and an amortized cost of $68.4 million. These notes allow the investor to participate in cash flows of the underlying bonds including certain residual values, which could serve to either decrease or increase the ultimate values of these notes.

[8] Included are certain medium term notes supported primarily by pools of European investment grade credit with varying degrees of leverage. The notes had a fair value of $74.8 million and $79.9 million and an amortized cost of $63.8 million and $68.4 million as of March 31, 2015 and December 31, 2014, respectively. These notes allow the investor to participate in cash flows of the underlying bonds including certain residual values, which could serve to either decrease or increase the ultimate values of these notes.

[9] Short-term investments consist primarily of Corporate securities and U.S. and Non-U.S. Government and Government-Related/Supported securities.

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Derivative Instruments - Derivatives Designated As Fair Value Hedges (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in income from ineffective portion of fair value hedges	$ 0	$ 1,794
Derivatives designated as hedging instruments | Fair value hedges | Net realized and unrealized gains (losses) on derivative instruments
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in income	0	(6,531)
Amount of gain (loss) recognized in income from ineffective portion of fair value hedges	0	1,794
Derivatives designated as hedging instruments | Fair value hedges | Net realized and unrealized gains (losses) on derivative instruments | Interest rate contracts
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in income	0	0
Derivatives designated as hedging instruments | Fair value hedges | Net realized and unrealized gains (losses) on derivative instruments | Foreign exchange contracts
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in income	0	(6,531)
Derivatives designated as hedging instruments | Fair value hedges | Net realized and unrealized gains (losses) on derivative instruments | Fixed maturity investments
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in income	$ 0	$ 8,325

XML

Investments - Analysis of continual unrealized loss position (Details) (Excluding Life Funds Withheld Assets, USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Total fixed maturities and short-term investments AFS
Fixed maturities and short-term investments - AFS:
Less than 12 months Fair Value	$ 2,210,453	$ 2,896,210
Less than 12 months Gross Unrealized Losses	(93,830)	(61,772)
Equal to or greater than 12 months Fair Value	1,633,911	2,745,705
Equal to greater than 12 months Gross Unrealized Losses	(96,507)	(125,574)
U.S. Government and Government - Related/Supported
Fixed maturities and short-term investments - AFS:
Less than 12 months Fair Value	249,646	251,091
Less than 12 months Gross Unrealized Losses	(3,541)	(1,196)
Equal to or greater than 12 months Fair Value	143,891	342,890
Equal to greater than 12 months Gross Unrealized Losses	(4,619)	(5,603)
Corporate
Fixed maturities and short-term investments - AFS:
Less than 12 months Fair Value	688,725	1,337,470
Less than 12 months Gross Unrealized Losses	(40,874)	(33,881)
Equal to or greater than 12 months Fair Value	190,397	424,221
Equal to greater than 12 months Gross Unrealized Losses	(9,730)	(15,754)
RMBS - Agency
Fixed maturities and short-term investments - AFS:
Less than 12 months Fair Value	177,627	134,535
Less than 12 months Gross Unrealized Losses	(914)	(220)
Equal to or greater than 12 months Fair Value	279,354	512,652
Equal to greater than 12 months Gross Unrealized Losses	(4,858)	(10,563)
RMBS - Non-Agency
Fixed maturities and short-term investments - AFS:
Less than 12 months Fair Value	51,876	45,378
Less than 12 months Gross Unrealized Losses	(1,815)	(1,358)
Equal to or greater than 12 months Fair Value	188,932	202,700
Equal to greater than 12 months Gross Unrealized Losses	(16,137)	(16,797)
Commercial mortgage-backed securities
Fixed maturities and short-term investments - AFS:
Less than 12 months Fair Value	120,862	78,356
Less than 12 months Gross Unrealized Losses	(393)	(385)
Equal to or greater than 12 months Fair Value	109,324	169,065
Equal to greater than 12 months Gross Unrealized Losses	(3,008)	(4,877)
Collateralized debt obligations
Fixed maturities and short-term investments - AFS:
Less than 12 months Fair Value	92,517	249,803
Less than 12 months Gross Unrealized Losses	(294)	(2,666)
Equal to or greater than 12 months Fair Value	346,372	414,516
Equal to greater than 12 months Gross Unrealized Losses	(21,336)	(24,503)
Other asset-backed securities
Fixed maturities and short-term investments - AFS:
Less than 12 months Fair Value	92,193	143,044
Less than 12 months Gross Unrealized Losses	(6,219)	(2,813)
Equal to or greater than 12 months Fair Value	37,357	57,544
Equal to greater than 12 months Gross Unrealized Losses	(2,728)	(3,232)
US States and political subdivisions of the States
Fixed maturities and short-term investments - AFS:
Less than 12 months Fair Value	55,707	32,187
Less than 12 months Gross Unrealized Losses	(695)	(210)
Equal to or greater than 12 months Fair Value	15,310	63,695
Equal to greater than 12 months Gross Unrealized Losses	(569)	(994)
Non-U.S. Sovereign Government, Provincial, Supranational, and Government-Related/Supported
Fixed maturities and short-term investments - AFS:
Less than 12 months Fair Value	681,300	624,346
Less than 12 months Gross Unrealized Losses	(39,085)	(19,043)
Equal to or greater than 12 months Fair Value	322,974	558,422
Equal to greater than 12 months Gross Unrealized Losses	(33,522)	(43,251)
Equities
Fixed maturities and short-term investments - AFS:
Less than 12 months Fair Value	119,625	191,193
Less than 12 months Gross Unrealized Losses	(14,942)	(26,230)
Equal to or greater than 12 months Fair Value	0	0
Equal to greater than 12 months Gross Unrealized Losses	$ 0	$ 0

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Accumulated Other Comprehensive Income (Loss) - Changes in AOCI, net of tax (Details) (USD $)	3 Months Ended
	Mar. 31, 2015		Mar. 31, 2014	Dec. 31, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance, net of tax	$ 1,484,458,000		$ 736,657,000
OCI before Reclassifications	287,646,000		259,319,000
Amounts reclassified from AOCI	(64,750,000)		(19,119,000)
Tax benefit (expense)	(2,184,000)		(30,196,000)
Comprehensive income (loss)	220,712,000		210,004,000
Ending balance, net of tax	1,705,170,000		946,661,000
AOCI Other Details [Abstract]
Change in adjustments related to future policy benefit reserves, net of tax	(60,356,000)		34,004,000
Unrealized gains (losses) on investments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance, net of tax	1,590,114,000	[1]	822,432,000
OCI before Reclassifications	254,267,000	[1]	265,250,000
Amounts reclassified from AOCI	(74,781,000)	[1]	(22,638,000)
Tax benefit (expense)	(5,805,000)	[1]	(32,103,000)
Comprehensive income (loss)	173,681,000	[1]	210,509,000
Ending balance, net of tax	1,763,795,000	[1]	1,032,941,000
AOCI Other Details [Abstract]
Change in adjustments related to future policy benefit reserves, net of tax	(60,400,000)
Cumulative impact on value of future policy benefit reserve, end of period	384,800,000			445,100,000
OTTI losses recognized in AOCI
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance, net of tax	(76,047,000)		(89,190,000)
OCI before Reclassifications	0		0
Amounts reclassified from AOCI	9,936,000		3,409,000
Tax benefit (expense)	(78,000)		(113,000)
Comprehensive income (loss)	9,858,000		3,296,000
Ending balance, net of tax	(66,189,000)		(85,894,000)
Foreign currency translation adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance, net of tax	(11,188,000)		14,541,000
OCI before Reclassifications	32,404,000		(5,900,000)
Amounts reclassified from AOCI	0		0
Tax benefit (expense)	3,699,000		2,020,000
Comprehensive income (loss)	36,103,000		(3,880,000)
Ending balance, net of tax	24,915,000		10,661,000
Underfunded pension liability
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance, net of tax	(20,789,000)		(13,239,000)
OCI before Reclassifications	975,000		(31,000)
Amounts reclassified from AOCI	0		0
Tax benefit (expense)	0		0
Comprehensive income (loss)	975,000		(31,000)
Ending balance, net of tax	(19,814,000)		(13,270,000)
Cash flow hedge
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance, net of tax	2,368,000		2,113,000
OCI before Reclassifications	0		0
Amounts reclassified from AOCI	95,000		110,000
Tax benefit (expense)	0		0
Comprehensive income (loss)	95,000		110,000
Ending balance, net of tax	$ 2,463,000		$ 2,223,000

[1] Included in these amounts is the impact of Shadow Adjustments. As of December 31, 2014 the cumulative impact of these adjustments was $445.1 million. During the three months ended March 31, 2015, net movements of $(60.4) million were recorded, resulting in a total cumulative net impact of Shadow Adjustments on future policy benefit reserves of $384.8 million as of March 31, 2015.

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Derivative Instruments - Schedule of settlement of fair value hedges (Details) (Fair value hedges, Deposit liabilities, USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Fair value hedges | Deposit liabilities
Derivative [Line Items]
Cumulative reduction to interest expense	$ 97,705	$ 41,270
Remaining balance	$ 135,490	$ 191,925
Weighted average years remaining to maturity	22 years 8 months 12 days	22 years 2 months 12 days

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Investments - Cost (amortized cost for fixed maturities and short-term investments), fair value, gross unrealized gains, gross unrealized (losses), and OTTI recorded in AOCI (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015		Dec. 31, 2014
AFS securities
Amortized cost of fixed maturities	$ 27,370,101		$ 27,728,771
Fixed maturities, at fair value	29,110,400		29,359,034
Gross Unrealized Losses Non-credit related OTTI	(66,784)	[1]	(76,720)	[1]
Short-term investments, amortized cost	169,903		257,221
Short-term investments, at fair value	168,862		256,727
Cost of equity securities	665,682		763,833
Equity securities, at fair value	783,471		868,292
Available for sale securities, Cost or amortized cost	28,205,686		28,749,825
Available for sale securities, Gross unrealized gains	2,062,326		1,947,804
Available for sale securities, Gross unrealized losses	(205,279)		(213,576)
Total investments available for sale	30,062,733		30,484,053
Trading securities
Amortized cost of fixed maturities, trading	138,647		1,180
Fixed maturities, trading at fair value	139,377		1,171
Excluding Life Funds Withheld Assets
AFS securities
Amortized cost of fixed maturities	23,579,612		23,427,432
Gross unrealized gains on Fixed maturities	1,001,956		936,840
Gross unrealized losses on Fixed maturities	(189,147)		(186,803)
Fixed maturities, at fair value	24,392,421		24,177,469
Gross Unrealized Losses Non-credit related OTTI	(66,784)	[1]	(76,720)	[1]
Short-term investments, amortized cost	169,903		257,221
Short-term investments, gross unrealized gains	149		49
Short-term investments, gross unrealized losses	(1,190)		(543)
Short-term investments, at fair value	168,862		256,727
Cost of equity securities	665,682		763,833
Equity securities, gross unrealized gains	132,731		130,689
Equity securities, gross unrealized losses	(14,942)		(26,230)
Equity securities, at fair value	783,471		868,292
Available for sale securities, Cost or amortized cost	24,415,197		24,448,486
Available for sale securities, Gross unrealized gains	1,134,836		1,067,578
Available for sale securities, Gross unrealized losses	(205,279)		(213,576)
Total investments available for sale	25,344,754		25,302,488
Excluding Life Funds Withheld Assets | U.S. Government and Government - Related/Supported
AFS securities
Amortized cost of fixed maturities	3,299,458		2,100,851
Gross unrealized gains on Fixed maturities	87,025		77,889
Gross unrealized losses on Fixed maturities	(8,141)		(6,787)
Fixed maturities, at fair value	3,378,342		2,171,953
Gross Unrealized Losses Non-credit related OTTI	0	[1]	0	[1]
Excluding Life Funds Withheld Assets | Corporate
AFS securities
Amortized cost of fixed maturities	7,806,607	[2]	8,462,130	[3]
Gross unrealized gains on Fixed maturities	398,357	[2]	365,805	[3]
Gross unrealized losses on Fixed maturities	(50,326)	[2]	(49,562)	[3]
Fixed maturities, at fair value	8,154,638	[2]	8,778,373	[3]
Gross Unrealized Losses Non-credit related OTTI	(3,309)	[1],[2]	(3,309)	[1],[3]
Excluding Life Funds Withheld Assets | RMBS - Agency
AFS securities
Amortized cost of fixed maturities	3,585,638		3,625,171
Gross unrealized gains on Fixed maturities	131,468		114,188
Gross unrealized losses on Fixed maturities	(5,772)		(10,783)
Fixed maturities, at fair value	3,711,334		3,728,576
Gross Unrealized Losses Non-credit related OTTI	0	[1]	0	[1]
Excluding Life Funds Withheld Assets | RMBS - Non-Agency
AFS securities
Amortized cost of fixed maturities	368,317		404,398
Gross unrealized gains on Fixed maturities	29,770		41,108
Gross unrealized losses on Fixed maturities	(17,952)		(18,155)
Fixed maturities, at fair value	380,135		427,351
Gross Unrealized Losses Non-credit related OTTI	(58,364)	[1]	(67,918)	[1]
Excluding Life Funds Withheld Assets | Commercial mortgage-backed securities
AFS securities
Amortized cost of fixed maturities	1,010,518		1,033,819
Gross unrealized gains on Fixed maturities	25,603		23,987
Gross unrealized losses on Fixed maturities	(3,401)		(5,262)
Fixed maturities, at fair value	1,032,720		1,052,544
Gross Unrealized Losses Non-credit related OTTI	(1,801)	[1]	(2,033)	[1]
Excluding Life Funds Withheld Assets | Collateralized debt obligations
AFS securities
Amortized cost of fixed maturities	520,929		717,544
Gross unrealized gains on Fixed maturities	1,675		1,659
Gross unrealized losses on Fixed maturities	(21,630)		(27,169)
Fixed maturities, at fair value	500,974		692,034
Gross Unrealized Losses Non-credit related OTTI	(1,648)	[1]	(1,663)	[1]
Excluding Life Funds Withheld Assets | Other asset-backed securities
AFS securities
Amortized cost of fixed maturities	1,134,928		1,028,528
Gross unrealized gains on Fixed maturities	41,386		42,810
Gross unrealized losses on Fixed maturities	(8,947)		(6,045)
Fixed maturities, at fair value	1,167,367		1,065,293
Gross Unrealized Losses Non-credit related OTTI	(1,662)	[1]	(1,797)	[1]
Excluding Life Funds Withheld Assets | US States and political subdivisions of the States
AFS securities
Amortized cost of fixed maturities	1,842,561		1,892,566
Gross unrealized gains on Fixed maturities	131,843		129,910
Gross unrealized losses on Fixed maturities	(1,264)		(1,204)
Fixed maturities, at fair value	1,973,140		2,021,272
Gross Unrealized Losses Non-credit related OTTI	0	[1]	0	[1]
Excluding Life Funds Withheld Assets | Non-U.S. Sovereign Government, Provincial, Supranational, and Government-Related/Supported
AFS securities
Amortized cost of fixed maturities	4,010,656		4,162,425
Gross unrealized gains on Fixed maturities	154,829		139,484
Gross unrealized losses on Fixed maturities	(71,714)		(61,836)
Fixed maturities, at fair value	4,093,771		4,240,073
Gross Unrealized Losses Non-credit related OTTI	0	[1]	0	[1]
Life Funds Withheld Assets
AFS securities
Amortized cost of fixed maturities	3,790,489		4,301,339
Gross unrealized gains on Fixed maturities	927,490		880,226
Gross unrealized losses on Fixed maturities	0		0
Fixed maturities, at fair value	4,717,979		5,181,565
Gross Unrealized Losses Non-credit related OTTI	0	[1]	0	[1]
Trading securities
Amortized cost of fixed maturities, trading	138,647		1,180
Fixed maturities, trading at fair value	139,377		1,171
Life Funds Withheld Assets | U.S. Government and Government - Related/Supported
AFS securities
Amortized cost of fixed maturities	13,163		14,866
Gross unrealized gains on Fixed maturities	4,450		3,858
Gross unrealized losses on Fixed maturities	0		0
Fixed maturities, at fair value	17,613		18,724
Gross Unrealized Losses Non-credit related OTTI	0	[1]	0	[1]
Life Funds Withheld Assets | Corporate
AFS securities
Amortized cost of fixed maturities	2,277,295	[2]	2,407,849	[3]
Gross unrealized gains on Fixed maturities	468,931	[2]	410,131	[3]
Gross unrealized losses on Fixed maturities	0	[2]	0	[3]
Fixed maturities, at fair value	2,746,226	[2]	2,817,980	[3]
Gross Unrealized Losses Non-credit related OTTI	0	[1],[2]	0	[1]
Trading securities
Amortized cost of fixed maturities, trading	136,681		1,180
Fixed maturities, trading at fair value	137,438		1,171
Life Funds Withheld Assets | RMBS - Agency
AFS securities
Amortized cost of fixed maturities	1,641		3,301
Gross unrealized gains on Fixed maturities	489		481
Gross unrealized losses on Fixed maturities	0		0
Fixed maturities, at fair value	2,130		3,782
Gross Unrealized Losses Non-credit related OTTI	0	[1]	0	[1]
Life Funds Withheld Assets | RMBS - Non-Agency
AFS securities
Amortized cost of fixed maturities	32,880		71,075
Gross unrealized gains on Fixed maturities	5,928		14,260
Gross unrealized losses on Fixed maturities	0		0
Fixed maturities, at fair value	38,808		85,335
Gross Unrealized Losses Non-credit related OTTI	0	[1]	0	[1]
Life Funds Withheld Assets | Commercial mortgage-backed securities
AFS securities
Amortized cost of fixed maturities	131,830		168,886
Gross unrealized gains on Fixed maturities	27,427		24,281
Gross unrealized losses on Fixed maturities	0		0
Fixed maturities, at fair value	159,257		193,167
Gross Unrealized Losses Non-credit related OTTI	0	[1]	0	[1]
Life Funds Withheld Assets | Other asset-backed securities
AFS securities
Amortized cost of fixed maturities	209,714		238,168
Gross unrealized gains on Fixed maturities	34,426		35,373
Gross unrealized losses on Fixed maturities	0		0
Fixed maturities, at fair value	244,140		273,541
Gross Unrealized Losses Non-credit related OTTI	0	[1]	0	[1]
Trading securities
Amortized cost of fixed maturities, trading	1,966
Fixed maturities, trading at fair value	1,939
Life Funds Withheld Assets | Non-U.S. Sovereign Government, Provincial, Supranational, and Government-Related/Supported
AFS securities
Amortized cost of fixed maturities	1,123,966		1,397,194
Gross unrealized gains on Fixed maturities	385,839		391,842
Gross unrealized losses on Fixed maturities	0		0
Fixed maturities, at fair value	1,509,805		1,789,036
Gross Unrealized Losses Non-credit related OTTI	$ 0	[1]	$ 0	[1]

[1] Represents the non-credit component of OTTI losses, adjusted for subsequent sales of securities. It does not include the change in fair value subsequent to the date an impairment was recorded.

[2] Included are certain medium term notes supported primarily by pools of European investment grade credit with varying degrees of leverage. The notes have a fair value of $74.8 million and an amortized cost of $63.8 million. These notes allow the investor to participate in cash flows of the underlying bonds including certain residual values, which could serve to either decrease or increase the ultimate values of these notes.

[3] Included are certain medium term notes supported primarily by pools of European investment grade credit with varying degrees of leverage. The notes have a fair value of $79.9 million and an amortized cost of $68.4 million. These notes allow the investor to participate in cash flows of the underlying bonds including certain residual values, which could serve to either decrease or increase the ultimate values of these notes.

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Accumulated Other Comprehensive Income (Loss) (Tables)

3 Months Ended

Mar. 31, 2015

Comprehensive Income Loss Note [Abstract]

Schedule of Accumulated Other Comprehensive Income (Loss)

The changes in AOCI, net of tax, by component for the three months ended March 31, 2015 and 2014 are as follows:

Three months ended March 31, 2015 (U.S. dollars in thousands)	Unrealized Gains (Losses) on Investments (1)			OTTI Losses Recognized in AOCI			Foreign Currency Translation Adjustments			Underfunded Pension Liability			Cash Flow Hedge		Total
Balance, beginning of period, net of tax	$	1,590,114		$	(76,047	)	$	(11,188	)	$	(20,789	)	$	2,368	$	1,484,458
OCI before reclassifications	254,267			—			32,404			975			—		287,646
Amounts reclassified from AOCI	(74,781		)	9,936			—			—			95		(64,750		)
Tax benefit (expense)	(5,805		)	(78		)	3,699			—			—		(2,184		)
Net current period OCI - net of tax	173,681			9,858			36,103			975			95		220,712
Balance, end of period, net of tax	$	1,763,795		$	(66,189	)	$	24,915		$	(19,814	)	$	2,463	$	1,705,170
Three months ended March 31, 2014 (U.S. dollars in thousands)
Balance, beginning of period, net of tax	$	822,432		$	(89,190	)	$	14,541		$	(13,239	)	$	2,113	$	736,657
OCI before reclassifications	265,250			—			(5,900		)	(31		)	—		259,319
Amounts reclassified from AOCI	(22,638		)	3,409			—			—			110		(19,119		)
Tax benefit (expense)	(32,103		)	(113		)	2,020			—			—		(30,196		)
Net current period OCI - net of tax	210,509			3,296			(3,880		)	(31		)	110		210,004
Balance, end of period, net of tax	$	1,032,941		$	(85,894	)	$	10,661		$	(13,270	)	$	2,223	$	946,661

____________

(1) Included in these amounts is the impact of Shadow Adjustments. As of December 31, 2014 the cumulative impact of these adjustments was $445.1 million. During the three months ended March 31, 2015, net movements of $(60.4) million were recorded, resulting in a total cumulative net impact of Shadow Adjustments on future policy benefit reserves of $384.8 million as of March 31, 2015.

Reclassification out of Accumulated Other Comprehensive Income

The reclassifications out of AOCI along with the associated income statement line items affected by component, and the total related tax (expense) benefit for the three months ended March 31, 2015 and 2014 are as follows:

Gross Amount Reclassified From AOCI
Details About AOCI Components (U.S. dollars in thousands)	Three months ended March 31, 2015			Three months ended March 31, 2014			Affected Line Item in the Statement of Income
Unrealized gains and losses on investments:
	$	(78,551	)	$	(24,914	)	Net realized gains (losses) on investments sold
	15,724			2,276			OTTI on investments
	$	(11,954	)	$	—		Net realized and unrealized gains (losses) on life retrocession embedded derivative and derivative instruments - Life Funds Withheld Assets
	$	(74,781	)	$	(22,638	)	Total before tax
	87			453			Provision (benefit) for income tax
	$	(74,694	)	$	(22,185	)	Net of tax
OTTI losses recognized in OCI:
	$	9,875		$	1,958		Net realized gains (losses) on investments sold
	61			1,451			OTTI on investments transferred to (from) OCI
	$	9,936		$	3,409		Total before tax
	(3		)	(113		)	Provision (benefit) for income tax
	$	9,933		$	3,296		Net of tax
Gains and losses on cash flow hedges:
Interest rate contracts	$	95		$	110		Interest Expense
	—			—			Provision (benefit) for income tax
	$	95		$	110		Net of tax
Total reclassifications for the period, gross of tax	$	(64,750	)	$	(19,119	)
Tax benefit (expense)	84			340
Total reclassifications for the period, net of tax	$	(64,666	)	$	(18,779	)

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Derivative Instruments - Net Realized and unrealized gains (losses) on Derivative Instruments (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Derivative [Line Items]
Amount of gain (loss) recognized in income from ineffective portion of fair value hedges	$ 0	$ 1,794
Net realized and unrealized gains (losses) on derivative instruments	16,521	1,810
Derivatives not designated as hedging instruments
Derivative [Line Items]
Total gain (loss) recognized in income from derivatives not designated as hedging instruments	16,521	16
Derivatives not designated as hedging instruments | Investment related derivatives
Derivative [Line Items]
Interest rate exposure	9,637	348
Foreign exchange exposure	(1,362)	3,288
Credit exposure	82	(404)
Financial market exposure	3,041	871
Derivatives not designated as hedging instruments | Financial operations derivatives
Derivative [Line Items]
Credit exposure	0	(4,800)
Derivatives not designated as hedging instruments | Other non-investment derivatives
Derivative [Line Items]
Foreign exchange exposure	2,059	0
Credit exposure	1,346	0
Guaranteed minimum income benefit contract	0	1,624
Modified coinsurance funds withheld contract	1,718	(911)
Life Funds Withheld Assets
Derivative [Line Items]
Net realized and unrealized gains (losses) on derivative instruments	$ (229,367)	$ 0

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Accumulated Other Comprehensive Income (Loss) - Details About AOCI Components (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015		Mar. 31, 2014
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Total before tax	$ (64,750)		$ (19,119)
Operating expenses	325,656		310,424
Tax benefit (expense)	(24,218)		(34,321)
Unrealized gains (losses) on investments
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Total before tax	(74,781)	[1]	(22,638)
OTTI losses recognized in AOCI
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Total before tax	9,936		3,409
Underfunded pension liability
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Total before tax	0		0
Cash flow hedge
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Total before tax	95		110
Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Total before tax	(64,750)		(19,119)
Tax benefit (expense)	84		340
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	(64,666)		(18,779)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Unrealized gains (losses) on investments
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Net realized gains (losses) on investments sold	(78,551)		(24,914)
OTTI on investments	15,724		2,276
Total before tax	(74,781)		(22,638)
Tax benefit (expense)	87		453
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	(74,694)		(22,185)
Reclassification out of Accumulated Other Comprehensive Income [Member] | OTTI losses recognized in AOCI
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Net realized gains (losses) on investments sold	9,875		1,958
OTTI on investments	61		1,451
Total before tax	9,936		3,409
Tax benefit (expense)	(3)		(113)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	9,933		3,296
Reclassification out of Accumulated Other Comprehensive Income [Member] | Cash flow hedge
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Total before tax	95		110
Tax benefit (expense)	0		0
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	95		110
Life Funds Withheld Assets
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Net realized gains (losses) on investments sold	52,738		0
OTTI on investments	(5,209)		0
Change in adjustments related to future policy benefit reserves, net of tax	(11,954)
Life Funds Withheld Assets | Unrealized gains (losses) on investments
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Change in adjustments related to future policy benefit reserves, net of tax			0
Life Funds Withheld Assets | Reclassification out of Accumulated Other Comprehensive Income [Member] | Unrealized gains (losses) on investments
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Change in adjustments related to future policy benefit reserves, net of tax	$ (11,954)		$ 0

[1] Included in these amounts is the impact of Shadow Adjustments. As of December 31, 2014 the cumulative impact of these adjustments was $445.1 million. During the three months ended March 31, 2015, net movements of $(60.4) million were recorded, resulting in a total cumulative net impact of Shadow Adjustments on future policy benefit reserves of $384.8 million as of March 31, 2015.

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Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2015

Fair Value Disclosures [Abstract]

Fair Value Hierarchy

The following tables set forth the Company’s assets and liabilities that were accounted for at fair value as of March 31, 2015 and December 31, 2014 by level within the fair value hierarchy:

March 31, 2015 (U.S. dollars in thousands)	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Other Unobservable Inputs (Level 3)		Collateral and Counterparty Netting			Balance at March 31, 2015
Assets
Fixed maturities - Available for Sale ("AFS") - Excluding Life Funds Withheld Assets
U.S. Government and Government-Related/Supported	$	—	$	3,378,342	$	—	$	—		$	3,378,342
Corporate (1)	—		8,148,777		5,861		—			8,154,638
Residential mortgage-backed securities – Agency (“RMBS - Agency”)	—		3,709,514		1,820		—			3,711,334
Residential mortgage-backed securities – Non-Agency (“RMBS - Non-Agency”)	—		380,135		—		—			380,135
Commercial mortgage-backed securities (“CMBS”)	—		1,032,720		—		—			1,032,720
Collateralized debt obligations (“CDO”)	—		4,051		496,923		—			500,974
Other asset-backed securities	—		1,165,123		2,244		—			1,167,367
U.S. States and political subdivisions of the States	—		1,973,140		—		—			1,973,140
Non-U.S. Sovereign Government, Provincial, Supranational and Government-Related/Supported	—		4,093,771		—		—			4,093,771
Total fixed maturities - AFS - Excluding Funds Withheld Assets, at fair value	$	—	$	23,885,573	$	506,848	$	—		$	24,392,421
Equity securities, at fair value	497,496		285,975		—		—			783,471
Short-term investments, at fair value (1)(2)	—		168,862		—		—			168,862
Total investments AFS - Excluding Funds Withheld Assets	$	497,496	$	24,340,410	$	506,848	$	—		$	25,344,754
Fixed maturities - Life Funds Withheld Assets
U.S. Government and Government-Related/Supported	$	—	$	17,613	$	—	$	—		$	17,613
Corporate	—		2,746,226		—		—			2,746,226
RMBS – Agency	—		2,130		—		—			2,130
RMBS – Non-Agency	—		38,808		—		—			38,808
CMBS	—		159,257		—		—			159,257
Other asset-backed securities	—		244,140		—		—			244,140
Non-U.S. Sovereign Government, Provincial, Supranational and Government-Related/Supported	—		1,509,805		—		—			1,509,805
Total fixed maturities - AFS - Life Funds Withheld Assets, at fair value	$	—	$	4,717,979	$	—	$	—		$	4,717,979
Total investments - AFS, at fair value	$	497,496	$	29,058,389	$	506,848	$	—		$	30,062,733
Fixed maturities - trading securities ("Trading")
Corporate	—		137,438		—		—			137,438
Other asset-backed securities	—		1,939		—		—			1,939
Total fixed maturities - Trading, at fair value	$	—	$	139,377	$	—	$	—		$	139,377
Cash equivalents (3)	1,835,344		393,154		—		—			2,228,498
Cash equivalents - Life Funds Withheld Assets (3)	788		120,721		—		—			121,509
Other investments (4)	—		784,486		190,097		—			974,583
Other assets (5)	—		244,900		12,980		(587		)	257,293
Total assets accounted for at fair value	$	2,333,628	$	30,741,027	$	709,925	$	(587	)	$	33,783,993
Liabilities
Funds withheld on life retrocession arrangements (net of future policy benefit reserves recoverable) (6)	$	—	$	654,561	$	—	$	—		$	654,561
Financial instruments sold, but not yet purchased (7)	1,572		5,660		—		—			7,232
Other liabilities (5)	—		99,649		22,586		(587		)	121,648
Total liabilities accounted for at fair value	$	1,572	$	759,870	$	22,586	$	(587	)	$	783,441

December 31, 2014 (U.S. dollars in thousands)	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Other Unobservable Inputs (Level 3)		Collateral and Counterparty Netting			Balance at December 31, 2014
Assets
Fixed maturities - AFS - Excluding Life Funds Withheld Assets
U.S. Government and Government-Related/Supported	$	—	$	2,171,953	$	—	$	—		$	2,171,953
Corporate (1)	—		8,772,479		5,894		—			$	8,778,373
Residential mortgage-backed securities – RMBS - Agency	—		3,726,666		1,910		—			$	3,728,576
Residential mortgage-backed securities – RMBS - Non-Agency	—		427,351		—		—			$	427,351
CMBS	—		1,052,544		—		—			$	1,052,544
CDO	—		4,076		687,958		—			$	692,034
Other asset-backed securities	—		1,060,005		5,288		—			$	1,065,293
U.S. States and political subdivisions of the States	—		2,021,272		—		—			$	2,021,272
Non-U.S. Sovereign Government, Provincial, Supranational and Government-Related/Supported	—		4,240,073		—		—			$	4,240,073
Total fixed maturities - AFS - Excluding Funds Withheld Assets, at fair value	$	—	$	23,476,419	$	701,050	$	—		$	24,177,469
Equity securities, at fair value	502,284		366,008		—		—			868,292
Short-term investments, at fair value (1)(2)	—		256,727		—		—			256,727
Total investments AFS - Excluding Funds Withheld Assets	$	502,284	$	24,099,154	$	701,050	$	—		$	25,302,488
Fixed maturities - Life Funds Withheld Assets
U.S. Government and Government-Related/Supported	$	—	$	18,724	$	—	$	—		$	18,724
Corporate	—		2,817,980		—		—			$	2,817,980
RMBS – Agency	—		3,782		—		—			$	3,782
RMBS – Non-Agency	—		85,335		—		—			$	85,335
CMBS	—		193,167		—		—			$	193,167
Other asset-backed securities	—		273,541		—		—			$	273,541
Non-U.S. Sovereign Government, Provincial, Supranational and Government-Related/Supported	—		1,789,036		—		—			$	1,789,036
Total fixed maturities - AFS - Life Funds Withheld Assets, at fair value	$	—	$	5,181,565	$	—	$	—		$	5,181,565
Total investments - AFS, at fair value	$	502,284	$	29,280,719	$	701,050	$	—		$	30,484,053
Fixed maturities - Trading
Corporate	—		1,171		—		—			$	1,171
Total fixed maturities - Trading, at fair value	$	—	$	1,171	$	—	$	—		$	1,171
Cash equivalents (3)	1,103,877		397,955		—		—			$	1,501,832
Cash equivalents - Life Funds Withheld Assets (3)	460		132,738		—		—			$	133,198
Other investments (4)	—		708,974		185,083		—			$	894,057
Other assets (5)	—		122,996		13,663		(696		)	$	135,963
Total assets accounted for at fair value	$	1,606,621	$	30,644,553	$	899,796	$	(696	)	$	33,150,274
Liabilities
Funds withheld on life retrocession arrangements (net of future policy benefit reserves recoverable) (6)	$	—	$	450,831	$	—	$	—		$	450,831
Financial instruments sold, but not yet purchased (7)	4,737		25,669		—		—			$	30,406
Other liabilities (5)	—		7,757		23,427		(696		)	$	30,488
Total liabilities accounted for at fair value	$	4,737	$	484,257	$	23,427	$	(696	)	$	511,725

____________

(1) Included are certain medium term notes supported primarily by pools of European investment grade credit with varying degrees of leverage. The notes had a fair value of $74.8 million and $79.9 million and an amortized cost of $63.8 million and $68.4 million as of March 31, 2015 and December 31, 2014, respectively. These notes allow the investor to participate in cash flows of the underlying bonds including certain residual values, which could serve to either decrease or increase the ultimate values of these notes.

(2) Short-term investments consist primarily of Corporate securities and U.S. and Non-U.S. Government and Government-Related/Supported securities.

(3) Cash equivalents balances subject to fair value measurement include certificates of deposit and money market funds. Operating cash balances are not subject to recurring fair value measurement guidance.

(4) The Other investments balance excludes certain structured transactions including certain investments in project finance transactions, a payment obligation and liquidity financing provided to a structured credit vehicle as a part of a third party medium term note facility. These investments, which totaled $354.4 million as of March 31, 2015 and $354.4 million at December 31, 2014, are carried at amortized cost. For further information, see Item 8, Note 8, “Other Investments,” to the Consolidated Financial Statements included in our Annual Report on Form 10-K for the year ended December 31, 2014.

(5) Other assets and other liabilities include derivative instruments. The derivative balances included in each category are reported on a gross basis by level with a netting adjustment presented separately in the Collateral and Counterparty Netting column. The fair values of the individual derivative contracts are reported gross in their respective levels based on the fair value hierarchy. For further details regarding derivative fair values and associated collateral received or paid see Note 7, “Derivative Instruments,” to the Unaudited Consolidated Financial Statements.

(6) Funds withheld on life retrocession arrangements (net of future policy benefit reserves recoverable) include balances related to the life retrocession embedded derivative, under which all investment results associated with the Life Funds Withheld Assets related to the Life Retro Arrangements described in Note 3(c), ”Acquisition and Disposals - Sale of Life Reinsurance Subsidiary," accrue to the benefit of GCLR.

(7) Financial instruments sold, but not yet purchased, represent “short sales” and are included within “Payable for investments purchased” on the balance sheets.

Level 3 Roll Forward

	Level 3 Assets and Liabilities -Three Months Ended March 31, 2015
(U.S. dollars in thousands)	Corporate			RMBS - Agency			RMBS - Non Agency		CMBS			CDO
Balance, beginning of period	$	5,894		$	1,910		$	—	$	—		$	687,958
Realized gains (losses)	(1		)	—			—		—			36
Movement in unrealized gains (losses)	48			(1		)	—		—			5,555
Purchases and issuances	—			—			—		—			—
Sales	—			—			—		—			(155,085		)
Settlements	(80		)	(89		)	—		—			(41,541		)
Transfers into Level 3				—			—		—			—
Transfers out of Level 3	—			—			—		—			—
Fixed maturities to short-term investments classification change	—			—			—		—			—
Balance, end of period	$	5,861		$	1,820		$	—	$	—		$	496,923
Movement in total gains (losses) above relating to instruments still held at the reporting date	$	48		$	(1	)	$	—	$	—		$	2,668
	Level 3 Assets and Liabilities -Three Months Ended March 31, 2015
(U.S. dollars in thousands)	Other asset- backed securities			Non-US Sovereign Government, Provincial, Supranational and Government Related/Supported			Short-term investments		Other investments			Derivative Contracts - Net
Balance, beginning of period	$	5,288		$	—		$	—	$	185,083		$	(9,764	)
Realized gains (losses)	(1		)	—			—		1,302			—
Movement in unrealized gains (losses)	2			—			—		(1,827		)	158
Purchases and issuances	—			—			—		6,793			—
Sales	—			—			—		—
Settlements	(3,045		)	—			—		(1,254		)	—
Transfers into Level 3	—			—			—		—			—
Transfers out of Level 3	—			—			—		—			—
Fixed maturities to short-term investments classification change	—			—			—		—			—
Balance, end of period	$	2,244		$	—		$	—	$	190,097		$	(9,606	)
Movement in total gains (losses) above relating to instruments still held at the reporting date	$	—		$	—		$	—	$	(524	)	$	158

	Level 3 Assets and Liabilities -Three Months Ended March 31, 2014
(U.S. dollars in thousands)	Corporate			RMBS - Agency			RMBS - Non Agency			CMBS			CDO
Balance, beginning of period	$	31,573		$	10,473		$	9		$	12,533		$	710,253
Realized gains (losses)	120			(1		)	—			2			1,581
Movement in unrealized gains (losses)	(2		)	1			2			(3		)	3,681
Purchases and issuances	1,434			—			—			—			27,814
Sales	—			—			—			—			(9,931		)
Settlements	(5,114		)	(573		)	—			(6,606		)	(14,571		)
Transfers into Level 3	—			—			—			—			—
Transfers out of Level 3	(23,629		)	(972		)	—			—			—
Fixed maturities to short-term investments classification change	—			—			—			—			—
Balance, end of period	$	4,382		$	8,928		$	11		$	5,926		$	718,827
Movement in total gains (losses) above relating to instruments still held at the reporting date	$	148		$	—		$	2		$	—		$	4,969
	Level 3 Assets and Liabilities -Three Months Ended March 31, 2014
(U.S. dollars in thousands)	Other asset- backed securities			Non-US Sovereign Government, Provincial, Supranational and Government Related/Supported			Short-term investments			Other investments			Derivative Contracts - Net
Balance, beginning of period	$	11,877		$	—		$	2,015		$	113,472		$	(29,110	)
Realized gains (losses)	(15		)	—			—			3,566			—
Movement in unrealized gains (losses)	62			—			(15		)	1,494			(3,386		)
Purchases and issuances	—			—			—			11,089			—
Sales	—			—			—			—			—
Settlements	(1,251		)	—			(2,000		)	(13,203		)	—
Transfers into Level 3	—			—			—			—			—
Transfers out of Level 3	—			—			—			—			—
Fixed maturities to short-term investments classification change	—			—			—			—			—
Balance, end of period	$	10,673		$	—		$	—		$	116,418		$	(32,496	)
Movement in total gains (losses) above relating to instruments still held at the reporting date	$	46		$	—		$	—		$	5,061		$	(3,386	)

Financial Instruments Not Carried at Fair Value

	March 31, 2015				December 31, 2014
(U.S. dollars in thousands)	Carrying Value		Fair Value		Carrying Value		Fair Value
Financial Assets - Other investments, structured transactions	$	354,352	$	367,491	$	354,382	$	371,625
Deposit liabilities	$	1,211,203	$	1,528,570	$	1,245,367	$	1,543,761
Notes payable and debt	2,643,561		2,957,605		1,662,580		1,897,854
Financial Liabilities	$	3,854,764	$	4,486,175	$	2,907,947	$	3,441,615

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Investments - Credit loss impairments on fixed income securities (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Investments, Debt and Equity Securities [Abstract]
Balance, beginning of period	$ 131,942	$ 174,805
Credit loss impairment recognized in the current period on securities not previously impaired	7,560	12
Credit loss impairments previously recognized on securities which matured, paid down, prepaid or were sold during the period	(28,539)	(3,348)
Additional credit loss impairments recognized in the current period on securities previously impaired	141	2,261
Accretion of credit loss impairments previously recognized due to an increase in cash flows expected to be collected	(2,646)	(2,347)
Balance, end of period	$ 108,458	$ 171,383

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Fair Value Measurements - Narrative (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturities, at fair value	$ 29,110,400,000	$ 29,359,034,000
Amortized cost of fixed maturities	27,370,101,000	27,728,771,000
Other investments - structured transactions	354,400,000	354,400,000
Spread on U.S. treasury for discounting deposit liabilities	0.334%	0.295%
Medium term notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturities, at fair value	74,800,000	79,900,000
Amortized cost of fixed maturities	$ 63,800,000	$ 68,400,000

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Acquisition and Disposals - Impact of Life Retro arrangements (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015		Mar. 31, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Underwriting profit (loss)	$ 139,207		$ 97,231
Net investment income	208,513		233,189
Exchange (gains) losses	(27,390)		(10,441)
Other income and expenses	(6,508)	[1]	(494)	[1]
Net realized and unrealized gains (losses) on life retrocession embedded derivative	16,521		1,810
Net income (loss)	73,671		291,476
Change in adjustments related to future policy benefit reserves, net of tax	60,356		(34,004)
Change in cumulative translation adjustment	36,103		(3,880)
Comprehensive income (loss)	220,712		210,004
XL Re Life (SAC) Ltd
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Comprehensive income (loss)	0
Life Funds Withheld Assets
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net investment income	50,419		0
Net realized gains (losses) on investments sold	52,738		0
Net unrealized gains (losses) on investments, trading securities	760		0
OTTI on investments	(5,209)		0
Net realized and unrealized gains (losses) on life retrocession embedded derivative	(229,367)		0
Change in net unrealized gains (losses) on investments, net of tax	37,115		0
Life Funds Withheld Assets | XL Re Life (SAC) Ltd
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Underwriting profit (loss)	603
Net investment income	50,419
Net realized gains (losses) on investments sold	52,738
Net unrealized gains (losses) on investments, trading securities	760
OTTI on investments	(5,209)
Exchange (gains) losses	3,684
Other income and expenses	(1,298)
Net realized and unrealized gains (losses) on life retrocession embedded derivative	(229,367)
Net income (loss)	(127,670)
Change in net unrealized gains (losses) on investments, net of tax	37,115
Change in adjustments related to future policy benefit reserves, net of tax	60,356
Change in cumulative translation adjustment	30,802
Total changes to other comprehensive income as a result of Life Retro Arrangements	128,273
Comprehensive income (loss)	$ 603

[1] Net fee income and other includes operating expenses from the Company's loss prevention consulting services business.

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Derivative Instruments - Gross amounts of derivative fair values contained in the consolidated balance sheet (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015		Dec. 31, 2014
Derivatives, Fair Value [Line Items]
Gross amounts recognized in balance sheet	$ 257,880		$ 136,659
Asset derivative fair value	257,293		135,963
Gross amounts recognized in balance sheet	122,235		31,184
Liability derivative fair value	121,648		30,488
Derivatives designated as hedging instruments
Derivatives, Fair Value [Line Items]
Derivative Asset, Notional Amount	204,811		2,300,609
Gross amounts recognized in balance sheet	38,376	[1]	121,862	[1]
Liability derivative notional amount	204,811		302,211
Gross amounts recognized in balance sheet	26,505	[1]	2,936	[1]
Derivatives designated as hedging instruments | Foreign exchange contracts
Derivatives, Fair Value [Line Items]
Derivative Asset, Notional Amount	204,811		2,300,609
Gross amounts recognized in balance sheet	38,376	[1]	121,862	[1]
Liability derivative notional amount	204,811		302,211
Gross amounts recognized in balance sheet	26,505	[1]	2,936	[1]
Derivatives not designated as hedging instruments
Derivatives, Fair Value [Line Items]
Derivative Asset, Notional Amount	2,770,578		592,791
Gross amounts recognized in balance sheet	219,504	[1]	14,797	[1]
Liability derivative notional amount	7,708,973		5,804,625
Gross amounts recognized in balance sheet	95,730	[1]	28,248	[1]
Derivatives not designated as hedging instruments | Investment related derivatives | Interest rate exposure
Derivatives, Fair Value [Line Items]
Derivative Asset, Notional Amount	264,527		394,597
Gross amounts recognized in balance sheet	224	[1]	206	[1]
Liability derivative notional amount	13,033		20,782
Gross amounts recognized in balance sheet	65	[1]	51	[1]
Derivatives not designated as hedging instruments | Investment related derivatives | Foreign exchange contracts
Derivatives, Fair Value [Line Items]
Derivative Asset, Notional Amount	23,400		7,385
Gross amounts recognized in balance sheet	498	[1]	403	[1]
Liability derivative notional amount	190,368		288,376
Gross amounts recognized in balance sheet	7,709	[1]	4,724	[1]
Derivatives not designated as hedging instruments | Investment related derivatives | Credit exposure
Derivatives, Fair Value [Line Items]
Derivative Asset, Notional Amount	2,408		2,408
Gross amounts recognized in balance sheet	205	[1]	165	[1]
Liability derivative notional amount	14,270		14,270
Gross amounts recognized in balance sheet	9,836	[1]	9,836	[1]
Derivatives not designated as hedging instruments | Investment related derivatives | Financial market exposure
Derivatives, Fair Value [Line Items]
Derivative Asset, Notional Amount	33,362		46,145
Gross amounts recognized in balance sheet	513	[1]	360	[1]
Liability derivative notional amount	33,136		33,670
Gross amounts recognized in balance sheet	63	[1]	34	[1]
Derivatives not designated as hedging instruments | Other non-investment derivatives | Foreign exchange contracts
Derivatives, Fair Value [Line Items]
Derivative Asset, Notional Amount	2,304,633		0
Gross amounts recognized in balance sheet	205,083	[1]	0	[1]
Liability derivative notional amount	2,366,968		0
Gross amounts recognized in balance sheet	65,294	[1]	0	[1]
Derivatives not designated as hedging instruments | Other non-investment derivatives | Other Credit Derivatives [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Notional Amount	31,060		31,060
Gross amounts recognized in balance sheet	218		60
Liability derivative notional amount	0		0
Gross amounts recognized in balance sheet	0		0
Derivatives not designated as hedging instruments | Other non-investment derivatives | Guaranteed minimum income benefit contract
Derivatives, Fair Value [Line Items]
Derivative Asset, Notional Amount	45,658		46,249
Gross amounts recognized in balance sheet	12,763	[1]	13,603	[1]
Liability derivative notional amount	45,658		46,249
Gross amounts recognized in balance sheet	12,763	[1]	13,603	[1]
Derivatives not designated as hedging instruments | Other non-investment derivatives | Modified coinsurance funds withheld contract
Derivatives, Fair Value [Line Items]
Derivative Asset, Notional Amount	65,530	[2]	64,947	[2]
Gross amounts recognized in balance sheet	0	[1],[2]	0	[1],[2]
Liability derivative notional amount	5,045,540	[2]	5,401,278	[2]
Gross amounts recognized in balance sheet	$ 0	[1],[2]	$ 0	[1],[2]

[1] Derivative instruments in an asset or liability position are included within Other assets or Other liabilities, respectively, in the balance sheets on a net basis where the Company has both a legal right of offset and the intention to settle the contracts on a net basis.

[2] The fair value movements in derivative assets and liabilities relating to modified coinsurance funds withheld contracts are included within the associated asset or liability at each period end on the face of the balance sheets. Notional amounts associated with reinsurance agreements under which the Company assumes reinsurance risk are recorded as asset derivative notional amounts. Notional amounts associated with the Life Retro Arrangements under which the Company cedes reinsurance risk are recorded as liability derivative notional amounts. Included in the liability derivative notional amount as of March 31, 2015 is the cumulative net realized and unrealized loss on life retrocession embedded derivative of $654.6 million

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Computation of Earnings Per Ordinary Share and Ordinary Share Equivalent - Computation of Basic and Diluted Earnings Per Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Basic earnings per ordinary share & ordinary share equivalents outstanding:
Net income (loss) attributable to ordinary shareholders	$ 36,281	$ 255,717
Weighted average ordinary shares outstanding - basic	255,724	276,337
Basic earnings per ordinary share & ordinary share equivalents outstanding	$ 0.14	$ 0.93
Diluted earnings per ordinary share & ordinary share equivalents outstanding:
Impact of share-based compensation and certain conversion features	4,980	4,121
Weighted average ordinary shares outstanding - diluted	260,704	280,458
Diluted earnings per ordinary share & ordinary share equivalents outstanding	$ 0.14	$ 0.91
Dividends per ordinary share	$ 0.16	$ 0.16

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Goodwill and Other Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and intangible assets, net	$ 442,431	$ 447,952

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Investments - Contractual maturities of available for sale securities (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Fixed Maturities - AFS
Amortized cost of fixed maturities	$ 27,370,101	$ 27,728,771
Fixed maturities, at fair value	29,110,400	29,359,034
Trading Securities, Debt, Amortized Cost	138,647	1,180
Trading Securities Debt Maturities And Short Term Investments	139,377	1,171
Excluding Life Funds Withheld Assets
Fixed Maturities - AFS
Due less than one year, amortized cost	1,770,647	1,972,224
Due less than one year, fair value	1,781,224	1,980,429
Due after 1 through 5 years, amortized cost	9,698,659	8,919,037
Due after 1 through 5 years, fair value	9,923,517	9,113,651
Due after 5 through 10 years, amortized cost	4,049,907	4,232,396
Due after 5 through 10 years, fair value	4,226,001	4,412,569
Due after 10 years, amortized cost	1,440,069	1,494,315
Due after 10 years, fair value	1,669,149	1,705,022
Subtotal - amortized cost	16,959,282	16,617,972
Subtotal - fair value	17,599,891	17,211,671
Mortgage and asset backed securities - amortized cost	6,620,330	6,809,460
Mortgage and asset backed securities - fair value	6,792,530	6,965,798
Amortized cost of fixed maturities	23,579,612	23,427,432
Fixed maturities, at fair value	24,392,421	24,177,469
Excluding Life Funds Withheld Assets | RMBS - Agency
Fixed Maturities - AFS
Mortgage and asset backed securities - amortized cost	3,585,638	3,625,171
Mortgage and asset backed securities - fair value	3,711,334	3,728,576
Amortized cost of fixed maturities	3,585,638	3,625,171
Fixed maturities, at fair value	3,711,334	3,728,576
Excluding Life Funds Withheld Assets | RMBS - Non-Agency
Fixed Maturities - AFS
Mortgage and asset backed securities - amortized cost	368,317	404,398
Mortgage and asset backed securities - fair value	380,135	427,351
Amortized cost of fixed maturities	368,317	404,398
Fixed maturities, at fair value	380,135	427,351
Excluding Life Funds Withheld Assets | Commercial mortgage-backed securities
Fixed Maturities - AFS
Mortgage and asset backed securities - amortized cost	1,010,518	1,033,819
Mortgage and asset backed securities - fair value	1,032,720	1,052,544
Amortized cost of fixed maturities	1,010,518	1,033,819
Fixed maturities, at fair value	1,032,720	1,052,544
Excluding Life Funds Withheld Assets | Collateralized debt obligations
Fixed Maturities - AFS
Mortgage and asset backed securities - amortized cost	520,929	717,544
Mortgage and asset backed securities - fair value	500,974	692,034
Amortized cost of fixed maturities	520,929	717,544
Fixed maturities, at fair value	500,974	692,034
Excluding Life Funds Withheld Assets | Other asset-backed securities
Fixed Maturities - AFS
Mortgage and asset backed securities - amortized cost	1,134,928	1,028,528
Mortgage and asset backed securities - fair value	1,167,367	1,065,293
Amortized cost of fixed maturities	1,134,928	1,028,528
Fixed maturities, at fair value	1,167,367	1,065,293
Life Funds Withheld Assets
Fixed Maturities - AFS
Due less than one year, amortized cost	97,637	117,048
Due less than one year, fair value	107,530	125,326
Due after 1 through 5 years, amortized cost	626,869	638,526
Due after 1 through 5 years, fair value	676,507	685,787
Due after 5 through 10 years, amortized cost	798,923	1,004,698
Due after 5 through 10 years, fair value	933,986	1,165,348
Due after 10 years, amortized cost	1,890,995	2,059,637
Due after 10 years, fair value	2,555,621	2,649,279
Subtotal - amortized cost	3,414,424	3,819,909
Subtotal - fair value	4,273,644	4,625,740
Mortgage and asset backed securities - amortized cost	376,065	481,430
Mortgage and asset backed securities - fair value	444,335	555,825
Amortized cost of fixed maturities	3,790,489	4,301,339
Fixed maturities, at fair value	4,717,979	5,181,565
Trading Securities, Debt, Amortized Cost	138,647	1,180
Trading Securities Debt Maturities And Short Term Investments	139,377	1,171
Life Funds Withheld Assets | Cost
Fixed Maturities - AFS
Trading Securities Debt Maturities And Short Term Investments Within One Year	0	0
Trading Securities Debt Maturities After One Through Five Years	64,739	0
Trading Securities Debt Maturities After Five Through Ten Years	5,188	1,180
Trading Securities Debt Maturities After Ten Years	66,754	0
Trading Securities Debt Maturities And Short Term Investments Fixed Maturities	136,681	1,180
Trading Securities Debt Maturities Without Single Maturity Date	1,966	0
Trading Securities, Debt, Amortized Cost	138,647	1,180
Life Funds Withheld Assets | Fair value
Fixed Maturities - AFS
Trading Securities Debt Maturities And Short Term Investments Within One Year	0	0
Trading Securities Debt Maturities After One Through Five Years	64,733	0
Trading Securities Debt Maturities After Five Through Ten Years	5,131	1,171
Trading Securities Debt Maturities After Ten Years	67,574	0
Trading Securities Debt Maturities And Short Term Investments Fixed Maturities	137,438	1,171
Trading Securities Debt Maturities Without Single Maturity Date	1,939	0
Trading Securities Debt Maturities And Short Term Investments	139,377	1,171
Life Funds Withheld Assets | RMBS - Agency
Fixed Maturities - AFS
Mortgage and asset backed securities - amortized cost	1,641	3,301
Mortgage and asset backed securities - fair value	2,130	3,782
Amortized cost of fixed maturities	1,641	3,301
Fixed maturities, at fair value	2,130	3,782
Life Funds Withheld Assets | RMBS - Non-Agency
Fixed Maturities - AFS
Mortgage and asset backed securities - amortized cost	32,880	71,075
Mortgage and asset backed securities - fair value	38,808	85,335
Amortized cost of fixed maturities	32,880	71,075
Fixed maturities, at fair value	38,808	85,335
Life Funds Withheld Assets | Commercial mortgage-backed securities
Fixed Maturities - AFS
Mortgage and asset backed securities - amortized cost	131,830	168,886
Mortgage and asset backed securities - fair value	159,257	193,167
Amortized cost of fixed maturities	131,830	168,886
Fixed maturities, at fair value	159,257	193,167
Life Funds Withheld Assets | Other asset-backed securities
Fixed Maturities - AFS
Mortgage and asset backed securities - amortized cost	209,714	238,168
Mortgage and asset backed securities - fair value	244,140	273,541
Amortized cost of fixed maturities	209,714	238,168
Fixed maturities, at fair value	244,140	273,541
Trading Securities, Debt, Amortized Cost	1,966
Trading Securities Debt Maturities And Short Term Investments	1,939
Life Funds Withheld Assets | Other asset-backed securities | Cost
Fixed Maturities - AFS
Trading Securities Debt Maturities Without Single Maturity Date	1,966	0
Life Funds Withheld Assets | Other asset-backed securities | Fair value
Fixed Maturities - AFS
Trading Securities Debt Maturities Without Single Maturity Date	$ 1,939	$ 0

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Significant Accounting Policies

3 Months Ended

Mar. 31, 2015

Accounting Policies [Abstract]

Significant Accounting Policies

Significant Accounting Policies

(a) Recent Accounting Pronouncements

In February 2015, the Financial Accounting Standards Board ("FASB") issued an accounting standards update concerning consolidation of certain legal entities. Under this new guidance, all legal entities are required to evaluate whether they should consolidate certain legal entities. The guidance: (1) modifies the evaluation of whether limited partnerships and similar legal entities are variable interest entities ("VIEs") or voting interest entities; (2) eliminates the presumption that a general partner should consolidate a limited partnership; (3) affects the consolidation analysis of reporting entities that are involved with VIEs, particularly those that have fee arrangements and related party relationships; and (4) provides a scope exception from consolidation guidance for certain reporting entities. Upon adoption of the new guidance, differing requirements for performing a consolidation analysis under existing GAAP will be eliminated, and all reporting entities will now fall within the scope of the Accounting Standards Codification Subtopic 810-10, Consolidation-Overall, unless a specific exception applies. Under this Subtopic, there are only two primary models for determining whether consolidation is appropriate - a voting interest entity model, and a variable interest entity model. The guidance is effective for public business entities for annual periods ending after December 15, 2015, and interim and annual periods thereafter, with early adoption permitted. The Company is currently evaluating the impact of this guidance.

In April 2015, the FASB issued an accounting standards update concerning the presentation of deferred debt issuance costs in an entity's balance sheet. Under this new guidance, which is part of the FASB's initiative to reduce complexity in accounting standards while maintaining or improving the usefulness of the information provided to users of financial statements, it is required that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts. In addition, the guidance also requires that the amortization of such costs be reported as interest expense. The guidance is effective for public business entities for annual periods beginning after December 31, 2015, and interim periods within those fiscal years, with early adoption permitted for financial statements that have not been previously issued. This guidance is not expected to have a material impact on the Company's financial condition, results of operations or cash flows.

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Share Capital - Options valuation assumptions (Details)	3 Months Ended
	Mar. 31, 2015
Stockholders' Equity Note [Abstract]
Dividend yield	2.00%
Risk free interest rate	1.70%
Volatility	21.90%
Expected lives	6 years

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Segment Information - Statement of earnings by segment (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015		Mar. 31, 2014
Segment Reporting Information [Line Items]
Gross premiums written	$ 2,555,360		$ 2,512,936
Net premiums written	1,851,249		1,995,851
Net premiums earned	1,334,000		1,488,839
Net losses and loss expenses	789,214		945,092
Acquisition costs	153,696		199,414
Operating expenses	251,883	[1]	247,102	[1]
Underwriting profit (loss)	139,207		97,231
Net results from structured products	5,025	[2]	7,953	[3]
Net fee income and other	(6,508)	[4]	(494)	[4]
Net realized gains (losses) on investments	52,891		19,229
Net realized and unrealized gains (losses) on derivative instruments	16,521		1,810
Net income (loss) from investment fund affiliates and operating affiliates	57,997	[5]	79,588	[5]
Exchange (gains) losses	27,390		10,441
Corporate operating expenses	62,443		51,338
Contribution from P&C and Corporate and Other	139,370		357,957
Interest expense	41,481	[6]	32,160	[6]
Non-controlling interests	37,390		35,759
Income tax	24,218		34,321
Net income (loss) attributable to ordinary shareholders	36,281		255,717
Corporate and Other
Segment Reporting Information [Line Items]
Gross premiums written	74,951	[7]	84,297	[7]
Net premiums written	14,506	[7]	76,311	[7]
Net premiums earned	14,506	[7]	76,311	[7]
Net losses and loss expenses	19,387	[7]	113,587	[7]
Acquisition costs	1,817	[7]	7,179	[7]
Operating expenses	931	[1],[7]	3,188	[1],[7]
Underwriting profit (loss)	(7,629)	[7]	(47,643)	[7]
Net results from structured products	0	[2],[7]	0	[3],[7]
Net fee income and other	132	[4],[7]	45	[4],[7]
Net realized and unrealized gains (losses) on derivative instruments	16,521	[7]	1,810	[7]
Net income (loss) from investment fund affiliates and operating affiliates	57,997	[5],[7]	79,588	[5],[7]
Exchange (gains) losses	27,390	[7]	10,441	[7]
Corporate operating expenses	62,443	[7]	51,338	[7]
Contribution from P&C and Corporate and Other	(144,466)	[7]	44,476	[7]
Interest expense	41,481	[6],[7]	32,160	[6],[7]
Non-controlling interests	37,390	[7]	35,759	[7]
Income tax	24,218	[7]	34,321	[7]
Total P&C
Segment Reporting Information [Line Items]
Gross premiums written	2,480,409		2,428,639
Net premiums written	1,836,743		1,919,540
Net premiums earned	1,319,494		1,412,528
Net losses and loss expenses	769,827		831,505
Acquisition costs	151,879		192,235
Operating expenses	250,952	[1]	243,914	[1]
Underwriting profit (loss)	146,836		144,874
Net results from structured products	5,025	[2]	7,953	[3]
Net fee income and other	(6,640)	[4]	(539)	[4]
Contribution from P&C and Corporate and Other	283,836		313,481
Ratios - P&C operations
Loss and loss expense ratio	58.30%	[8]	58.90%	[8]
Underwriting expense ratio	30.60%	[8]	30.80%	[8]
Combined ratio	88.90%	[8]	89.70%	[8]
Insurance Segment
Segment Reporting Information [Line Items]
Gross premiums written	1,654,747		1,570,926
Net premiums written	1,089,108		1,127,367
Net premiums earned	962,306		992,440
Net losses and loss expenses	616,947		639,193
Acquisition costs	80,387		105,000
Operating expenses	208,457	[1]	203,053	[1]
Underwriting profit (loss)	56,515		45,194
Net results from structured products	2,905	[2]	4,890	[3]
Net fee income and other	(7,465)	[4]	(1,212)	[4]
Ratios - P&C operations
Loss and loss expense ratio	64.10%	[8]	64.40%	[8]
Underwriting expense ratio	30.00%	[8]	31.00%	[8]
Combined ratio	94.10%	[8]	95.40%	[8]
Reinsurance Segment
Segment Reporting Information [Line Items]
Gross premiums written	825,662		857,713
Net premiums written	747,635		792,173
Net premiums earned	357,188		420,088
Net losses and loss expenses	152,880		192,312
Acquisition costs	71,492		87,235
Operating expenses	42,495	[1]	40,861	[1]
Underwriting profit (loss)	90,321		99,680
Net results from structured products	2,120	[2]	3,063	[3]
Net fee income and other	825	[4]	673	[4]
Ratios - P&C operations
Loss and loss expense ratio	42.80%	[8]	45.80%	[8]
Underwriting expense ratio	31.90%	[8]	30.50%	[8]
Combined ratio	74.70%	[8]	76.30%	[8]
Excluding Life Funds Withheld Assets
Segment Reporting Information [Line Items]
Net investment income	143,018	[9]	214,419	[9]
Net realized gains (losses) on investments	4,602		19,229
Excluding Life Funds Withheld Assets | Corporate and Other
Segment Reporting Information [Line Items]
Net investment income	10,210	[7],[9]	70,892	[7],[9]
Net realized gains (losses) on investments	(1,205)	[7]	1,563	[7]
Excluding Life Funds Withheld Assets | Total P&C
Segment Reporting Information [Line Items]
Net investment income	132,808	[9]	143,527	[9]
Net realized gains (losses) on investments	5,807		17,666
Life Funds Withheld Assets
Segment Reporting Information [Line Items]
Net investment income	50,419
Net realized gains (losses) on investments	48,289		0
Net realized and unrealized gains (losses) on derivative instruments	(229,367)		0
Life Funds Withheld Assets | Corporate and Other
Segment Reporting Information [Line Items]
Net investment income	50,419	[7]
Net realized gains (losses) on investments	48,289	[7]
Net realized and unrealized gains (losses) on derivative instruments	$ (229,367)	[7]

[1] Operating expenses of the segments exclude Corporate operating expenses, shown separately.

[2] The net results from P&C structured products include net investment income and interest expense of $15.1 million and $10.0 million, respectively.

[3] The net results from P&C structured products include net investment income and interest expense of $18.8 million and $10.8 million, respectively.

[4] Net fee income and other includes operating expenses from the Company's loss prevention consulting services business.

[5] The Company generally records the income related to the alternative funds and to the private investment and operating fund affiliates on a one-month and three-month lag, respectively.

[6] Interest expense excludes interest expense related to deposit liabilities recorded in the Insurance and Reinsurance segments

[7] Corporate and Other includes other items of our revenue and expenditures that are not evaluated at the segment level for reporting purposes, as well as the Company's Run-Off Life Operations.

[8] Ratios are based on net premiums earned from P&C operations.

[9] Net investment income - excluding Life Funds Withheld Assets does not include net investment income related to the net results from structured products.

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Share Capital (Tables)

3 Months Ended

Mar. 31, 2015

Stockholders' Equity Note [Abstract]

Schedule of Valuation Assumptions - Stock Options

The fair value of the options issued was estimated on the date of grant using the Black-Scholes option pricing model using the following weighted average assumptions:

Dividend yield	2.00	%
Risk free interest rate	1.70	%
Volatility	21.9	%
Expected lives	6.0 years

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Derivative Instruments (Tables)

3 Months Ended

Mar. 31, 2015

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Summary of location and gross amounts of derivative fair values

The following table summarizes information on the location and gross amounts of derivative fair values contained in the consolidated balance sheets as of March 31, 2015 and December 31, 2014:

	March 31, 2015								December 31, 2014
(U.S. dollars in thousands)	Asset Derivative Notional Amount		Asset Derivative Fair Value (1)		Liability Derivative Notional Amount		Liability Derivative Fair Value (1)		Asset Derivative Notional Amount		Asset Derivative Fair Value (1)		Liability Derivative Notional Amount		Liability Derivative Fair Value (1)
Derivatives designated as hedging instruments:
Foreign exchange contracts	$	204,811	$	38,376	$	204,811	$	26,505	$	2,300,609	$	121,862	$	302,211	$	2,936
Total derivatives designated as hedging instruments	$	204,811	$	38,376	$	204,811	$	26,505	$	2,300,609	$	121,862	$	302,211	$	2,936
Derivatives not designated as hedging instruments:
Investment Related Derivatives:
Interest rate exposure	$	264,527	$	224	$	13,033	$	65	$	394,597	$	206	$	20,782	$	51
Foreign exchange exposure	23,400		498		190,368		7,709		7,385		403		288,376		4,724
Credit exposure	2,408		205		14,270		9,836		2,408		165		14,270		9,836
Financial market exposure	33,362		513		33,136		63		46,145		360		33,670		34
Other Non-Investment Derivatives:
Foreign exchange contracts	2,304,633		205,083		2,366,968		65,294		—		—		—		—
Credit exposure	31,060		218		—		—		31,060		60		—		—
Guaranteed minimum income benefit contract	45,658		12,763		45,658		12,763		46,249		13,603		46,249		13,603
Modified coinsurance funds withheld contracts (2)	65,530		—		5,045,540		—		64,947		—		5,401,278		—
Total derivatives not designated as hedging instruments	$	2,770,578	$	219,504	$	7,708,973	$	95,730	$	592,791	$	14,797	$	5,804,625	$	28,248

____________

(1) Derivative instruments in an asset or liability position are included within Other assets or Other liabilities, respectively, in the balance sheets on a net basis where the Company has both a legal right of offset and the intention to settle the contracts on a net basis.

(2) The fair value movements in derivative assets and liabilities relating to modified coinsurance funds withheld contracts are included within the associated asset or liability at each period end on the face of the balance sheets. Notional amounts associated with reinsurance agreements under which the Company assumes reinsurance risk are recorded as asset derivative notional amounts. Notional amounts associated with the Life Retro Arrangements under which the Company cedes reinsurance risk are recorded as liability derivative notional amounts. Included in the liability derivative notional amount as of March 31, 2015 is the cumulative net realized and unrealized loss on life retrocession embedded derivative of $654.6 million.

Summary of gross and net amounts of derivative fair values and associated collateral received or paid

The following table summarizes information on the gross and net amounts of derivative fair values and associated collateral received related to derivative assets, or paid related to derivative liabilities, reported in other assets and or other liabilities within our consolidated balance sheets as of March 31, 2015 and December 31, 2014:

							Gross Amounts Not Offset in the Balance Sheets
March 31, 2015 (U.S. dollars in thousands)	Gross Amounts Recognized in the Balance Sheets		Gross Amounts Offset in the Balance Sheets		Net Amounts in the Balance Sheets		Financial Instruments		Cash Collateral		Net Amounts
Derivative Assets	$	257,880	$	587	$	257,293	$	—	$	183,675	$	73,618
Derivative Liabilities	$	122,235	$	587	$	121,648	$	—	$	—	$	121,648
December 31, 2014 (U.S. dollars in thousands)
Derivative Assets	$	136,659	$	696	$	135,963	$	—	$	78,580	$	57,383
Derivative Liabilities	$	31,184	$	696	$	30,488	$	—	$	—	$	30,488

Gain (loss) recognized in income attributable to risk of hedged items

The following table provides the total impact on earnings relating to derivative instruments formally designated as fair value hedges along with the impacts of the related hedged items for the three months ended March 31, 2015 and 2014:

				Hedged Items - Amount of Gain/(Loss) Recognized in Income Attributable to Risk
Derivatives Designated as Fair Value Hedges: Three Months Ended March 31, 2015 (U.S. dollars in thousands)	Gain/(Loss) Recognized in Income on Derivative				Fixed Maturity Investments		Ineffective Portion of Hedging Relationship - Gain/(Loss)
Interest rate exposure	$	—
Foreign exchange exposure	—
Total	$	—			$	—	$	—
Three Months Ended March 31, 2014
(U.S. dollars in thousands)
Interest rate exposure	$	—
Foreign exchange exposure	(6,531		)
Total	$	(6,531	)		$	8,325	$	1,794

Summary of fair value hedges that have been settled and their impact on results

A summary of the fair value hedges that have been settled and their impact on results during the indicated periods as well as the remaining balance of fair value hedges and average years remaining to maturity as of March 31, 2015 and 2014 are shown below:

Settlement of Fair Value Hedges - Summary	Fair Value Hedges - Deposit Liabilities March 31,
(U.S. dollars in thousands, except years)	2015		2014
Cumulative reduction to interest expense	$	97,705	$	41,270
Remaining balance	$	135,490	$	191,925
Weighted average years remaining to maturity	22.7		22.2

Summary of hedges of net investment in foreign operation

The following table provides the weighted average U.S. dollar equivalent of foreign denominated net assets that were hedged and the resulting derivative gain (loss) that was recorded in the Foreign currency translation adjustment, net of tax, account within AOCI for the three months ended March 31, 2015 and 2014:

Derivative Instruments Designated as Hedges of the Net Investment in a Foreign Operation - Summary	Three months ended March 31,
(U.S. dollars in thousands)	2015		2014
Weighted average of U.S. dollar equivalent of foreign denominated net assets	$	628,941	$	2,687,455
Derivative gains (losses) (1)	$	66,770	$	960

____________

(1) Derivative gains (losses) from derivative instruments designated as hedges of the net investment in a foreign operation are recorded in the cumulative translation adjustment account within AOCI for each period.    

Summary of net realized and unrealized gains (losses) on derivative instruments

The following table provides the total impact on earnings relating to derivative instruments not formally designated as hedging instruments under authoritative accounting guidance and from the ineffective portion of fair value hedges. The impacts are all recorded through Net realized and unrealized gains (losses) on derivatives in the income statement for the three months ended March 31, 2015 and 2014:

Net Realized and Unrealized Gains (Losses) on Derivative Instruments	Three months ended March 31,
(U.S. dollars in thousands)	2015			2014
Investment Related Derivatives:
Interest rate exposure	$	9,637		$	348
Foreign exchange exposure	(1,362		)	3,288
Credit exposure	82			(404		)
Financial market exposure	3,041			871
Financial Operations Derivatives:
Credit exposure	—			(4,800		)
Other Non-Investment Derivatives:
Foreign exchange contracts	2,059			—
Credit exposure	1,346			—
Guaranteed minimum income benefit contract	—			1,624
Modified coinsurance funds withheld contract	1,718			(911		)
Total gain (loss) recognized in income from derivatives not designated as hedging instruments	$	16,521		$	16
Amount of gain (loss) recognized in income from ineffective portion of fair value hedges	—			1,794
Net realized and unrealized gains (losses) on derivative instruments	$	16,521		$	1,810
Net realized and unrealized gains (losses) on life retrocession embedded derivative and derivative instruments - Life Funds Withheld Assets	$	(229,367	)	$	—

Components of life retrocession embedded derivatives

The value of the life retrocession embedded derivative includes the interest income, realized and unrealized gains and losses on Life Funds Withheld Assets and certain related expenses subsequent to May 30, 2014 as follows:

Components of Life Retrocession Embedded Derivative and Derivative Instruments - Life Funds Withheld Assets:	Three months ended March 31,
(U.S. dollars in thousands)	2015			2014
Interest income - Life Funds Withheld Assets	$	(50,996	)	—
Realized and unrealized gains (losses) - Life Funds Withheld Assets	(152,830		)	—
Other	96			—
Net realized and unrealized gains (losses) on life retrocession embedded derivative	$	(203,730	)	$	—
Net adjustments related to future policy benefit reserves, net of tax	$	(11,954	)	$	—
Net realized and unrealized gains (losses) on derivative instruments - Life Funds Withheld Assets	$	(13,683	)	$	—
Net realized and unrealized gains (losses) on life retrocession embedded derivative and derivative instruments - Life Funds Withheld Assets	$	(229,367	)	$	—

Summary of contingent credit features

The aggregate fair value of all derivative agreements containing such rating downgrade provisions that were in a liability position and any collateral posted under these agreements as of March 31, 2015 and December 31, 2014 were as follows:

Contingent Credit Features - Summary: (U.S. dollars in thousands)	March 31, 2015		December 31, 2014
Aggregate fair value of derivative agreements with downgrade provisions in a net liability position	$	5,598	$	5,770
Collateral posted to counterparty	$	—	$	—

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Derivative Instruments - Derivative Instruments Designated as Hedges of the net Investment In a Foreign Operation - Summary (Details) (Derivatives designated as hedging instruments, USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015		Mar. 31, 2014
Derivatives designated as hedging instruments
Derivative [Line Items]
Weighted average of U.S. dollar equivalent of foreign denominated net assets	$ 628,941		$ 2,687,455
Derivative gains (losses)	$ 66,770	[1]	$ 960	[1]

[1] Derivative gains (losses) from derivative instruments designated as hedges of the net investment in a foreign operation are recorded in the cumulative translation adjustment account within AOCI for each period.

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Segment Information - Net Premiums Earned by Line of Business (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015		Mar. 31, 2014
Net premiums earned by line of business:
P&C Operations	$ 1,319,494		$ 1,412,528
Life Operations	14,506		76,311
Total	1,334,000		1,488,839
Total P&C
Net premiums earned by line of business:
Total	1,319,494		1,412,528
Insurance Segment
Net premiums earned by line of business:
P&C Operations	962,306		992,440
Total	962,306		992,440
Reinsurance Segment
Net premiums earned by line of business:
P&C Operations	357,188		420,088
Total	357,188		420,088
Corporate and Other
Net premiums earned by line of business:
Life Operations	14,506		76,311
Total	14,506	[1]	76,311	[1]
Professional | Total P&C
Net premiums earned by line of business:
P&C Operations	301,419		325,531
Professional | Insurance Segment
Net premiums earned by line of business:
P&C Operations	266,411		275,427
Professional | Reinsurance Segment
Net premiums earned by line of business:
P&C Operations	35,008		50,104
Casualty | Total P&C
Net premiums earned by line of business:
P&C Operations	367,543		420,725
Casualty | Insurance Segment
Net premiums earned by line of business:
P&C Operations	309,335		344,004
Casualty | Reinsurance Segment
Net premiums earned by line of business:
P&C Operations	58,208		76,721
Property catastrophe | Total P&C
Net premiums earned by line of business:
P&C Operations	94,073		108,437
Property catastrophe | Insurance Segment
Net premiums earned by line of business:
P&C Operations	0		0
Property catastrophe | Reinsurance Segment
Net premiums earned by line of business:
P&C Operations	94,073		108,437
Property | Total P&C
Net premiums earned by line of business:
P&C Operations	259,465		274,972
Property | Insurance Segment
Net premiums earned by line of business:
P&C Operations	128,241		139,733
Property | Reinsurance Segment
Net premiums earned by line of business:
P&C Operations	131,224		135,239
Marine, energy, aviation and satellite | Total P&C
Net premiums earned by line of business:
P&C Operations	18,075		23,514
Marine, energy, aviation and satellite | Insurance Segment
Net premiums earned by line of business:
P&C Operations	0		0
Marine, energy, aviation and satellite | Reinsurance Segment
Net premiums earned by line of business:
P&C Operations	18,075		23,514
Specialty | Total P&C
Net premiums earned by line of business:
P&C Operations	184,724		176,909
Specialty | Insurance Segment
Net premiums earned by line of business:
P&C Operations	184,724		176,909
Specialty | Reinsurance Segment
Net premiums earned by line of business:
P&C Operations	0		0
Other | Total P&C
Net premiums earned by line of business:
P&C Operations	94,195	[2]	82,440	[2]
Other | Insurance Segment
Net premiums earned by line of business:
P&C Operations	73,595	[2]	56,367	[2]
Other | Reinsurance Segment
Net premiums earned by line of business:
P&C Operations	20,600	[2]	26,073	[2]
Annuity
Net premiums earned by line of business:
Life Operations	(1)		31,797
Annuity | Corporate and Other
Net premiums earned by line of business:
Life Operations	(1)		31,797
Other life
Net premiums earned by line of business:
Life Operations	14,507		44,514
Other life | Corporate and Other
Net premiums earned by line of business:
Life Operations	$ 14,507		$ 44,514

[1] Corporate and Other includes other items of our revenue and expenditures that are not evaluated at the segment level for reporting purposes, as well as the Company's Run-Off Life Operations.

[2] Other within the Insurance segment includes: excess and surplus, programs, surety, structured indemnity and certain discontinued lines. Other within the Reinsurance segment includes: whole account contracts, accident and health and other lines.

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Notes Payable and Debt and Financing Arrangements (Tables)

3 Months Ended

Mar. 31, 2015

Debt Disclosure [Abstract]

Letter of Credit Summary

The Company’s letter of credit facilities and revolving credit facilities at March 31, 2015 and December 31, 2014 were as follows:

Letter of Credit Summary: (U.S. dollars in thousands except percentages)	March 31, 2015 (1)			December 31, 2014 (1)
Revolving credit facility (2)	$	1,000,000		$	1,000,000
Available letter of credit facilities - commitments (3)	$	3,575,000		$	3,575,000
Available letter of credit facilities - in use	$	1,743,230		$	1,790,561
Collateralized by certain assets of the Company’s investment portfolio	65.7		%	66.2		%

____________

(1) As of March 31, 2015 and December 31, 2014, there were eight available letter of credit facilities.

(2) As of March 31, 2015 and December 31, 2014, the $1 billion of revolving credit available under the November 2013 unsecured credit agreements, which currently provide an aggregate amount for issuance of letters of credit and revolving credit loans up to $2 billion, was unutilized. The credit agreements entered into with Citicorp USA, Inc. in May through November 2013 (the "Citi Agreements") provide for issuance of letters of credit and revolving credit loans up to an aggregate amount of $575.0 million. As of March 31, 2015, $575.0 million of letters of credit were issued under these agreements and therefore such amount is not included in this line.

(3) The available letter of credit facilities include $1 billion that is also included in the "revolving credit facility" line in this table, as part of the November 2013 credit agreements, which currently provide an aggregate amount of outstanding letters of credit and revolving credit loans of up to $2 billion. The Company has the option to increase the size of the facilities under these agreements by an additional $500 million across such facilities. The Company also has the option to increase the maximum amount of the letters of credit and revolving credit loans available under the 2013 credit agreements with Citicorp USA, Inc. with the lender's and issuing lender's consent.

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Related Party Transactions (Tables)

3 Months Ended

Mar. 31, 2015

Related Party Transactions [Abstract]

Summary of related party transactions

During the three months ended March 31, 2015 and 2014, these contracts resulted in reported net premiums written, net reported claims and reported acquisition costs as summarized below.

(U.S. dollars in thousands)	Three months ended March 31,
	2015		2014
Reported net premiums written	$	27,076	$	16,240
Net losses and loss expenses incurred	$	9,100	$	6,138
Reported acquisition costs	$	9,012	$	7,629

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Basis of Preparation and Consolidation

3 Months Ended

Mar. 31, 2015

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Basis of Preparation and Consolidation

Basis of Preparation and Consolidation

Unless the context otherwise indicates, references herein to the “Company” include XL Group plc, an Irish public limited company ("XL-Ireland"), and its consolidated subsidiaries.

These unaudited consolidated financial statements include the accounts of the Company and all of its subsidiaries and have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and disclosures required by GAAP for complete financial statements. In addition, the year-end balance sheet data was derived from audited financial statements but do not include all disclosures required by GAAP. In the opinion of management, these unaudited financial statements reflect all adjustments considered necessary for a fair statement of financial position and results of operations at the end of and 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 preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure about contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ materially from these estimates. For further information, see Item 8, Note 2(a), “Significant Accounting Policies – Basis of Preparation and Consolidation,” to the Consolidated Financial Statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2014.

To facilitate period-to-period comparisons, certain reclassifications have been made to prior period consolidated financial statement amounts to conform to current period presentation.

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Computation of Earnings Per Ordinary Share and Ordinary Share Equivalent (Tables)

3 Months Ended

Mar. 31, 2015

Earnings Per Share [Abstract]

Calculation of earnings per share

The following table sets forth the computation of basic and diluted earnings per ordinary share for the three months ended March 31, 2015 and 2014:

	Three Months Ended March 31,
(U.S. dollars in thousands, except per share amounts)	2015		2014
Basic earnings per ordinary share & ordinary share equivalents outstanding:
Net income (loss) attributable to ordinary shareholders	$	36,281	$	255,717
Weighted average ordinary shares outstanding, in thousands - basic	255,724		276,337
Basic earnings per ordinary share & ordinary share equivalents outstanding	$	0.14	$	0.93
Diluted earnings per ordinary share & ordinary share equivalents outstanding:
Weighted average ordinary shares outstanding, in thousands - basic	255,724		276,337
Impact of share-based compensation and certain conversion features, in thousands	4,980		4,121
Weighted average ordinary shares outstanding, in thousands - diluted	260,704		280,458
Diluted earnings per ordinary share & ordinary share equivalents outstanding	$	0.14	$	0.91
Dividends per ordinary share	$	0.16	$	0.16

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Fair Value Measurements - Additional information about assets and liabilities measured at fair value on a recurring basis (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Derivative contracts - net
Level 3 liabilities
Balance, beginning of period	$ (9,764)	$ (29,110)
Realized gains (losses)	0	0
Movement in unrealized gains (losses)	158	(3,386)
Purchases and issuances	0	0
Sales		0
Settlements	0	0
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Balance, end of period	(9,606)	(32,496)
Movement in total gains (losses) above relating to instruments still held at the reporting date	158	(3,386)
Corporate
Level 3 assets
Balance, beginning of period	5,894	31,573
Realized gains (losses)	(1)	120
Movement in unrealized gains (losses)	48	(2)
Purchases and issuances	0	1,434
Sales	0	0
Settlements	(80)	(5,114)
Transfers into Level 3		0
Transfers out of Level 3	0	(23,629)
Fixed maturities to short-term investments classification change	0	0
Balance, end of period	5,861	4,382
Movement in total gains (losses) above relating to instruments still held at the reporting date	48	148
RMBS - Agency
Level 3 assets
Balance, beginning of period	1,910	10,473
Realized gains (losses)	0	(1)
Movement in unrealized gains (losses)	(1)	1
Purchases and issuances	0	0
Sales	0	0
Settlements	(89)	(573)
Transfers into Level 3	0	0
Transfers out of Level 3	0	(972)
Fixed maturities to short-term investments classification change	0	0
Balance, end of period	1,820	8,928
Movement in total gains (losses) above relating to instruments still held at the reporting date	(1)	0
RMBS - Non-Agency
Level 3 assets
Balance, beginning of period	0	9
Realized gains (losses)	0	0
Movement in unrealized gains (losses)	0	2
Purchases and issuances	0	0
Sales	0	0
Settlements	0	0
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Fixed maturities to short-term investments classification change	0	0
Balance, end of period	0	11
Movement in total gains (losses) above relating to instruments still held at the reporting date	0	2
Commercial mortgage-backed securities
Level 3 assets
Balance, beginning of period	0	12,533
Realized gains (losses)	0	2
Movement in unrealized gains (losses)	0	(3)
Purchases and issuances	0	0
Sales	0	0
Settlements	0	(6,606)
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Fixed maturities to short-term investments classification change	0	0
Balance, end of period	0	5,926
Movement in total gains (losses) above relating to instruments still held at the reporting date	0	0
Collateralized debt obligations
Level 3 assets
Balance, beginning of period	687,958	710,253
Realized gains (losses)	36	1,581
Movement in unrealized gains (losses)	5,555	3,681
Purchases and issuances	0	27,814
Sales	(155,085)	(9,931)
Settlements	(41,541)	(14,571)
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Fixed maturities to short-term investments classification change	0	0
Balance, end of period	496,923	718,827
Movement in total gains (losses) above relating to instruments still held at the reporting date	2,668	4,969
Other asset-backed securities
Level 3 assets
Balance, beginning of period	5,288	11,877
Realized gains (losses)	(1)	(15)
Movement in unrealized gains (losses)	2	62
Purchases and issuances	0	0
Sales	0	0
Settlements	(3,045)	(1,251)
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Fixed maturities to short-term investments classification change	0	0
Balance, end of period	2,244	10,673
Movement in total gains (losses) above relating to instruments still held at the reporting date	0	46
Non-U.S. Sovereign Government, Provincial, Supranational, and Government-Related/Supported
Level 3 assets
Balance, beginning of period	0	0
Realized gains (losses)	0	0
Movement in unrealized gains (losses)	0	0
Purchases and issuances	0	0
Sales	0	0
Settlements	0	0
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Fixed maturities to short-term investments classification change	0	0
Balance, end of period	0	0
Movement in total gains (losses) above relating to instruments still held at the reporting date	0	0
Short-term investments
Level 3 assets
Balance, beginning of period	0	2,015
Realized gains (losses)	0	0
Movement in unrealized gains (losses)	0	(15)
Purchases and issuances	0	0
Sales	0	0
Settlements	0	(2,000)
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Fixed maturities to short-term investments classification change	0	0
Balance, end of period	0	0
Movement in total gains (losses) above relating to instruments still held at the reporting date	0	0
Other investments
Level 3 assets
Balance, beginning of period	185,083	113,472
Realized gains (losses)	1,302	3,566
Movement in unrealized gains (losses)	(1,827)	1,494
Purchases and issuances	6,793	11,089
Sales	0	0
Settlements	(1,254)	(13,203)
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Fixed maturities to short-term investments classification change	0	0
Balance, end of period	190,097	116,418
Movement in total gains (losses) above relating to instruments still held at the reporting date	$ (524)	$ 5,061

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Derivative Instruments - Balance sheet offsetting (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015		Dec. 31, 2014
Derivative assets:
Gross amounts recognized in balance sheet	$ 257,880		$ 136,659
Derivative Asset, Fair Value, Gross Liability	587	[1]	696	[1]
Net amounts in the balance sheet	257,293		135,963
Gross amounts not offset in the balance sheet - financial instruments	0		0
Gross amounts not offset in the balance sheet - cash collateral	183,675		78,580
Derivative Asset	73,618		57,383
Derivative liabilities:
Gross amounts recognized in balance sheet	122,235		31,184
Derivative Liability, Fair Value, Gross Asset	587	[1]	696	[1]
Net amounts in the balance sheet	121,648		30,488
Gross amounts not offset in the balance sheet - financial instruments	0		0
Gross amounts not offset in the balance sheet - cash collateral	0		0
Derivative Liability	$ 121,648		$ 30,488

[1] Other assets and other liabilities include derivative instruments. The derivative balances included in each category are reported on a gross basis by level with a netting adjustment presented separately in the Collateral and Counterparty Netting column. The fair values of the individual derivative contracts are reported gross in their respective levels based on the fair value hierarchy. For further details regarding derivative fair values and associated collateral received or paid see Note 7, “Derivative Instruments,” to the Unaudited Consolidated Financial Statements.

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UNAUDITED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Investments:
Fixed maturities, at fair value (amortized cost: 2015, $27,370,101; 2014, $27,728,771)	$ 29,110,400	$ 29,359,034
Equity securities, at fair value (cost: 2015, $665,682; 2014, $763,833)	783,471	868,292
Short-term investments, at fair value (amortized cost: 2015, $169,903; 2014, $257,221)	168,862	256,727
Total investments available for sale	30,062,733	30,484,053
Fixed maturities, trading at fair value (amortized cost: 2015, $138,647; 2014, $1,180)	139,377	1,171
Investments in affiliates	1,655,394	1,637,620
Other investments	1,328,935	1,248,439
Total investments	33,186,439	33,371,283
Cash and cash equivalents	3,209,934	2,521,814
Accrued investment income	278,714	315,964
Deferred acquisition costs	417,275	354,533
Ceded unearned premiums	1,078,575	952,525
Premiums receivable	2,898,739	2,473,736
Reinsurance balances receivable	118,384	131,519
Unpaid losses and loss expenses recoverable	3,529,331	3,429,368
Receivable from investments sold	19,627	92,762
Goodwill and other intangible assets	442,431	447,952
Deferred tax asset	192,286	204,491
Other assets	708,821	750,872
Total assets	46,080,556	45,046,819
Liabilities:
Unpaid losses and loss expenses	18,965,264	19,353,243
Deposit liabilities	1,211,203	1,245,367
Future policy benefit reserves	4,375,863	4,707,199
Funds withheld on life retrocession arrangements (net of future policy benefit reserves recoverable: 2015, $3,933,589; 2014, 4,265,678)	1,138,652	1,155,016
Unearned premiums	4,532,022	3,973,132
Notes payable and debt	2,643,561	1,662,580
Reinsurance balances payable	558,952	493,230
Payable for investments purchased	75,145	42,291
Deferred tax liability	66,115	66,246
Other liabilities	867,356	912,749
Total liabilities	34,434,133	33,611,053
Commitments and Contingencies
Shareholders' Equity:
Ordinary shares, 999,990,000 authorized, par value $0.01; issued and outstanding (2015, 256,683,621; 2014, 255,182,955)	2,567	2,552
Additional paid in capital	7,361,138	7,359,102
Accumulated other comprehensive income	1,705,170	1,484,458
Retained earnings	1,175,182	1,187,639
Shareholders' equity attributable to XL Group plc	10,244,057	10,033,751
Non-controlling interest in equity of consolidated subsidiaries	1,402,366	1,402,015
Total shareholders' equity	11,646,423	11,435,766
Total liabilities and shareholders' equity	$ 46,080,556	$ 45,046,819

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Segment Information - Narrative (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015 segments		Mar. 31, 2014
Segment Reporting Information [Line Items]
Number of segments	2
Net results from structured products	$ 5,025	[1]	$ 7,953	[2]
Total P&C
Segment Reporting Information [Line Items]
Net results from structured products	5,025	[1]	7,953	[2]
Net investment income | Total P&C
Segment Reporting Information [Line Items]
Net results from structured products	15,100		18,800
Interest expense | Total P&C
Segment Reporting Information [Line Items]
Net results from structured products	$ (10,000)		$ (10,800)
Alternative funds
Segment Reporting Information [Line Items]
Alternative investments, timelag for reporting	1 month
Operating affiliates
Segment Reporting Information [Line Items]
Alternative investments, timelag for reporting	3 months

[1] The net results from P&C structured products include net investment income and interest expense of $15.1 million and $10.0 million, respectively.

[2] The net results from P&C structured products include net investment income and interest expense of $18.8 million and $10.8 million, respectively.

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UNAUDITED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (USD $) In Thousands	Total	Excluding Life Funds Withheld Assets	Life Funds Withheld Assets	Ordinary Shares	Additional Paid in Capital	Accumulated Other Comprehensive Income (Loss)	Accumulated Other Comprehensive Income (Loss) Excluding Life Funds Withheld Assets	Accumulated Other Comprehensive Income (Loss) Life Funds Withheld Assets	Retained Earnings (Deficit)	Non-controlling Interest in Equity of Consolidated Subsidiaries
Balance, beginning of year at Dec. 31, 2013				$ 2,783	$ 7,994,100	$ 736,657			$ 1,264,093	$ 1,351,665
Issuance of ordinary shares				10	7
Buybacks of ordinary shares				(58)	(168,144)				(8,293)
Exercise of stock options				1
Exercise of stock options					1,309
Share-based compensation expense					1,396				0
Change in net unrealized gains (losses) on investments, net of tax		241,390	0				241,390	0
Change in adjustments related to future policy benefit reserves, net of tax	(34,004)					(34,004)
Change in net unrealized gains (losses) on affiliate and other investments, net of tax	3,123					3,123
Change in OTTI losses recognized in other comprehensive income, net of tax	3,296					3,296
Change in underfunded pension liability, net of tax	(31)					(31)
Change in value of cash flow hedge	110					110
Foreign currency translation adjustments, net of tax	(3,880)					(3,880)
Net income (loss) attributable to ordinary shareholders	255,717								255,717
Dividends on ordinary shares									(44,620)
Non-controlling interests - contributions										7,001
Non-controlling interests - distributions										0
Non-controlling interests										346
Balance, end of year at Mar. 31, 2014	11,603,974			2,736	7,828,668	946,661			1,466,897	1,359,012
Balance, beginning of year at Dec. 31, 2014	11,435,766			2,552	7,359,102	1,484,458			1,187,639	1,402,015
Issuance of ordinary shares				15	6
Buybacks of ordinary shares				(1)	(1,573)				(393)
Exercise of stock options				1
Exercise of stock options					1,771
Share-based compensation expense					1,832				(6,746)
Change in net unrealized gains (losses) on investments, net of tax		60,345	37,115				60,345	37,115
Change in adjustments related to future policy benefit reserves, net of tax	60,356					60,356
Change in net unrealized gains (losses) on affiliate and other investments, net of tax	15,865					15,865
Change in OTTI losses recognized in other comprehensive income, net of tax	9,858					9,858
Change in underfunded pension liability, net of tax	975					975
Change in value of cash flow hedge	95					95
Foreign currency translation adjustments, net of tax	36,103					36,103
Net income (loss) attributable to ordinary shareholders	36,281								36,281
Dividends on ordinary shares									(41,599)
Non-controlling interests - contributions										2,569
Non-controlling interests - distributions										(4,175)
Non-controlling interests										1,957
Balance, end of year at Mar. 31, 2015	$ 11,646,423			$ 2,567	$ 7,361,138	$ 1,705,170			$ 1,175,182	$ 1,402,366

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Derivative Instruments - Summary of contingent credit features (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Derivative [Line Items]
Collateral posted to counterparty	$ 0	$ 0
Contracts with downgrade provisions [Member]
Derivative [Line Items]
Aggregate fair value of derivative agreements with downgrade provisions in a net liability position	5,598	5,770
Collateral posted to counterparty	$ 0	$ 0

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Acquisition and Disposals - Acquisition Narrative (Details)			3 Months Ended		3 Months Ended			0 Months Ended
	Mar. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Mar. 31, 2015 Catlin Group Limited USD ($)	Mar. 30, 2015 Catlin Group Limited USD ($)	Mar. 31, 2015 Catlin Group Limited Operating expense USD ($)	Mar. 31, 2015 Catlin Group Limited Interest expense USD ($)	Jan. 08, 2015 Catlin Group Limited XL Cayman GBP (£)	May 01, 2015 Subsequent Event Catlin Group Limited USD ($)	May 01, 2015 Subsequent Event Catlin Group Limited GBP (£)	May 01, 2015 Subsequent Event Catlin Group Limited Cash on hand USD ($)	May 01, 2015 Subsequent Event Catlin Group Limited Proceeds from debt issuance USD ($)
Business Acquisition [Line Items]
Ordinary shares, par value (in dollars per share)	$ 0.01	$ 0.01
Cash price component, per share in GBP									£ 3.88
Exchange ratio per the merger agreement								0.13	0.13
Share issuance to Catlin shareholders								49,935,000	49,935,000
Cash consideration								$ 2,287,579,000	£ 1,490,377,000	$ 1,310,000,000	$ 980,600,000
Available letter of credit facilities - commitments							1,600,000,000
Face value of issued notes				1,000,000,000
Acquisition, integration and financing costs			$ 25,500,000		$ 10,500,000	$ 15,000,000

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Related Party Transactions - Schedule of related party transactions activity (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015 management_company	Mar. 31, 2014	Dec. 31, 2014 management_company
Related Party Transaction [Line Items]
Reported net premiums written	$ 1,851,249	$ 1,995,851
Net losses and loss expenses incurred	769,827	831,505
Reported acquisition costs	153,696	199,414
Number of investment management companies	6		5
Investment manager affiliates
Related Party Transaction [Line Items]
Reported net premiums written	27,076	16,240
Net losses and loss expenses incurred	9,100	6,138
Reported acquisition costs	$ 9,012	$ 7,629

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Accumulated Other Comprehensive Income (Loss)

3 Months Ended

Mar. 31, 2015

Comprehensive Income Loss Note [Abstract]

Accumulated Other Comprehensive Income (Loss)

Accumulated Other Comprehensive Income (Loss)

The changes in AOCI, net of tax, by component for the three months ended March 31, 2015 and 2014 are as follows:

Three months ended March 31, 2015 (U.S. dollars in thousands)	Unrealized Gains (Losses) on Investments (1)			OTTI Losses Recognized in AOCI			Foreign Currency Translation Adjustments			Underfunded Pension Liability			Cash Flow Hedge		Total
Balance, beginning of period, net of tax	$	1,590,114		$	(76,047	)	$	(11,188	)	$	(20,789	)	$	2,368	$	1,484,458
OCI before reclassifications	254,267			—			32,404			975			—		287,646
Amounts reclassified from AOCI	(74,781		)	9,936			—			—			95		(64,750		)
Tax benefit (expense)	(5,805		)	(78		)	3,699			—			—		(2,184		)
Net current period OCI - net of tax	173,681			9,858			36,103			975			95		220,712
Balance, end of period, net of tax	$	1,763,795		$	(66,189	)	$	24,915		$	(19,814	)	$	2,463	$	1,705,170
Three months ended March 31, 2014 (U.S. dollars in thousands)
Balance, beginning of period, net of tax	$	822,432		$	(89,190	)	$	14,541		$	(13,239	)	$	2,113	$	736,657
OCI before reclassifications	265,250			—			(5,900		)	(31		)	—		259,319
Amounts reclassified from AOCI	(22,638		)	3,409			—			—			110		(19,119		)
Tax benefit (expense)	(32,103		)	(113		)	2,020			—			—		(30,196		)
Net current period OCI - net of tax	210,509			3,296			(3,880		)	(31		)	110		210,004
Balance, end of period, net of tax	$	1,032,941		$	(85,894	)	$	10,661		$	(13,270	)	$	2,223	$	946,661

____________

(1) Included in these amounts is the impact of Shadow Adjustments. As of December 31, 2014 the cumulative impact of these adjustments was $445.1 million. During the three months ended March 31, 2015, net movements of $(60.4) million were recorded, resulting in a total cumulative net impact of Shadow Adjustments on future policy benefit reserves of $384.8 million as of March 31, 2015.

The reclassifications out of AOCI along with the associated income statement line items affected by component, and the total related tax (expense) benefit for the three months ended March 31, 2015 and 2014 are as follows:

Gross Amount Reclassified From AOCI
Details About AOCI Components (U.S. dollars in thousands)	Three months ended March 31, 2015			Three months ended March 31, 2014			Affected Line Item in the Statement of Income
Unrealized gains and losses on investments:
	$	(78,551	)	$	(24,914	)	Net realized gains (losses) on investments sold
	15,724			2,276			OTTI on investments
	$	(11,954	)	$	—		Net realized and unrealized gains (losses) on life retrocession embedded derivative and derivative instruments - Life Funds Withheld Assets
	$	(74,781	)	$	(22,638	)	Total before tax
	87			453			Provision (benefit) for income tax
	$	(74,694	)	$	(22,185	)	Net of tax
OTTI losses recognized in OCI:
	$	9,875		$	1,958		Net realized gains (losses) on investments sold
	61			1,451			OTTI on investments transferred to (from) OCI
	$	9,936		$	3,409		Total before tax
	(3		)	(113		)	Provision (benefit) for income tax
	$	9,933		$	3,296		Net of tax
Gains and losses on cash flow hedges:
Interest rate contracts	$	95		$	110		Interest Expense
	—			—			Provision (benefit) for income tax
	$	95		$	110		Net of tax
Total reclassifications for the period, gross of tax	$	(64,750	)	$	(19,119	)
Tax benefit (expense)	84			340
Total reclassifications for the period, net of tax	$	(64,666	)	$	(18,779	)

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Acquisition and Disposals - Sale of Operating Affiliate (Details) (ARX Holding Corporation, USD $) In Millions, unless otherwise specified	0 Months Ended
	Apr. 02, 2015	Mar. 31, 2015	Apr. 01, 2015
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Equity method investment, ownership percentage		40.60%
Investment in affiliates		$ 222.6
Subsequent Event
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Consideration received			560
Gain on disposal	$ 337

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Acquisition and Disposals (Tables)

3 Months Ended

Mar. 31, 2015

Acquisition and Disposal [Abstract]

Calculation of consideration transferred

The calculation of the consideration transferred to acquire Catlin Shares is as follows:

(In thousands, except per share data)
Catlin Shares outstanding as of April 30, 2015 that will receive share consideration (including the dilutive effect of warrants)	384,118
Exchange ratio per the merger agreement	0.130
Share issuance to Catlin shareholders	49,935
Closing price per share on April 30, 2015 (1)	$	37.08
Share issuance consideration	$	1,851,601
Shares of Catlin common stock outstanding as of April 30, 2015 that will receive cash consideration (including the dilutive effect of warrants)	384,118
Cash price component, per share in GBP	£	3.88
Cash consideration, in GBP	£	1,490,377
Foreign exchange rate: GBP/USD on April 30, 2015	$	1.5349
Cash consideration	$	2,287,579
Total acquisition consideration	$	4,139,180

____________

(1) The closing market price of XL's common stock on the acquisition date represents the fair value of shares issued as part of the consideration transferred.

Impact of Life Retro Arrangements

The impact of the Life Retro Arrangements on the Company's results was as follows:

Impact of Life Retro Arrangements	Three months ended March 31,
(U.S. dollars in thousands)	2015
Underwriting profit (loss) (1)	$	603
Net investment income - Life Funds Withheld Assets	50,419
Net realized gains (losses) on investments sold - Life Funds Withheld Assets	52,738
Net unrealized gains (losses) on investments, Trading - Life Funds Withheld Assets	760
OTTI on investments - Life Funds Withheld Assets	(5,209		)
Exchange (gains) losses	3,684
Other income and expenses	(1,298		)
Net realized and unrealized gains (losses) on life retrocession embedded derivative and derivative instruments - Life Funds Withheld Assets	(229,367		)
Net income (loss)	$	(127,670	)
Change in net unrealized gains (losses) on investments - Life Funds Withheld Assets, net of tax	37,115
Change in adjustments related to future policy benefit reserves, net of tax	60,356
Change in cumulative translation adjustment - Life Funds Withheld Assets, net of tax	30,802
Total changes to other comprehensive income as a result of Life Retro Arrangements	$	128,273
Comprehensive income (loss)	$	603

____________

(1) The underwriting profit of $0.6 million relates to a premium adjustment during the three months ended March 31, 2015 relating to the Life Retro Arrangements transaction which was completed on May 30, 2014. Excluding this transaction, the impact to comprehensive income relating to the Life Retro Arrangements was nil for the three months ended March 31, 2015.

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Computation of Earnings Per Ordinary Share and Ordinary Share Equivalent - Narrative (Details) (Share-based compensation plans) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Share-based compensation plans
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (shares)	5.0	6.1

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UNAUDITED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Cash flows provided by (used in) operating activities:
Net income (loss)	$ 73,671	$ 291,476
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Total net realized (gains) losses on investments and net unrealized (gains) losses on investments, Trading - Life Funds Withheld Assets	(52,891)	(19,229)
Net realized and unrealized (gains) losses on derivative instruments	(16,521)	(1,810)
Amortization of premiums (discounts) on fixed maturities	35,998	39,488
(Income) loss from investment and operating affiliates	(45,467)	(31,999)
Share-based compensation	18,295	15,974
Depreciation	10,907	14,961
Accretion of deposit liabilities	10,044	10,477
Changes in:
Unpaid losses and loss expenses	77,832	(72,058)
Future policy benefit reserves	(49,279)	(49,780)
Funds withheld on life retrocession agreements, net	(169,569)	0
Unearned premiums	655,733	621,009
Premiums receivable	(517,881)	(594,243)
Unpaid losses and loss expenses recoverable	(148,962)	28,747
Ceded unearned premiums	(146,049)	(110,310)
Reinsurance balances receivable	10,057	(60,224)
Deferred acquisition costs	(72,340)	(56,937)
Reinsurance balances payable	84,261	269,717
Deferred tax asset - net	14,119	(598)
Derivatives	141,754	(12,277)
Other assets	(31,407)	(25,731)
Other liabilities	(94,545)	(77,037)
Other	17,851	20,452
Total adjustments	(38,693)	(91,408)
Net cash provided by (used in) operating activities	34,978	200,068
Cash flows provided by (used in) investing activities:
Proceeds from sale of fixed maturities and short-term investments	1,473,941	1,106,926
Proceeds from redemption of fixed maturities and short-term investments	1,053,739	1,056,358
Proceeds from sale of equity securities	189,473	76,382
Purchases of fixed maturities and short term investments	(2,835,304)	(1,411,447)
Purchases of equity securities	(94,141)	(80,833)
Proceeds from sale of affiliates	77,916	145,174
Purchases of affiliates	(29,037)	(86,205)
Other, net	(32,141)	(106,075)
Net cash provided by (used in) investing activities	(195,554)	700,280
Cash flows provided by (used in) financing activities:
Proceeds from issuance of ordinary shares and exercise of stock options	1,772	1,310
Buybacks of ordinary shares	(1,966)	(176,496)
Dividends paid on ordinary shares	(40,922)	(43,847)
Distributions to non-controlling interests	(7,172)	(3,008)
Contributions from non-controlling interests	2,569	7,001
Proceeds from the issuance of debt	980,600	0
Deposit liabilities	(38,788)	(17,270)
Net cash provided by (used in) financing activities	896,093	(232,310)
Effects of exchange rate changes on foreign currency cash	(47,397)	7,177
Increase (decrease) in cash and cash equivalents	688,120	675,215
Cash and cash equivalents beginning of year	2,521,814	1,800,832
Cash and cash equivalents end of year	3,209,934	2,476,047
Life Funds Withheld Assets
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Net realized and unrealized (gains) losses on derivative instruments	$ 229,367	$ 0

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UNAUDITED CONSOLIDATED BALANCE SHEETS (Parentheticals) (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Amortized cost of fixed maturities, available for sale	$ 27,370,101	$ 27,728,771
Cost of equity securities, available for sale	665,682	763,833
Amortized cost of short-term investments, available for sale	169,903	257,221
Amortized cost of fixed maturities, trading	138,647	1,180
Future policy benefit reserves recoverable	$ 3,933,589	$ 4,265,678
Ordinary shares, shares authorized (in shares)	999,990,000	999,990,000
Ordinary shares, par value (in dollars per share)	$ 0.01	$ 0.01
Ordinary shares, shares issued (in shares)	256,683,621	255,182,955
Ordinary shares, shares outstanding (in shares)	256,683,621	255,182,955

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Notes Payable and Debt and Financing Arrangements

3 Months Ended

Mar. 31, 2015

Debt Disclosure [Abstract]

Notes Payable and Debt and Financing Arrangements

Notes Payable and Debt and Financing Arrangements

(a) Notes Payable and Debt

All outstanding debt of the Company as of March 31, 2015 and December 31, 2014 was issued by XL-Cayman, a 100% owned subsidiary of XL-Ireland. XL-Ireland does not have significant assets or operations independent of XL-Cayman. XL-Cayman's outstanding debt is fully and unconditionally guaranteed by XL-Ireland. The ability of XL-Cayman, like that of the Company, to obtain funds from its subsidiaries to satisfy any of its obligations under guarantees is subject to certain contractual restrictions, applicable laws and statutory requirements of the various countries in which the subsidiaries operate, including, among others, Bermuda, the United States, Ireland, Switzerland and the United Kingdom. For details of the required statutory capital and surplus for the principal operating subsidiaries of the Company, see Item 8, Note 25, “Statutory Financial Data,” to the Consolidated Financial Statements included in the Company's Annual Report on Form 10-K for the year ended December 31, 2014.

On March 30, 2015, XL-Cayman issued $500 million of subordinated notes due March 2025, with a fixed coupon of 4.45%, that are guaranteed by XL-Ireland. The notes are listed on the New York Stock Exchange. The notes were issued at 99.633% of the face amount and net proceeds were $492.2 million. Related expenses of the offering amounted to approximately $5.9 million. These costs were deferred and will be amortized over the term of the subordinated notes.

On March 30, 2015, XL-Cayman issued $500 million of subordinated notes due March 2045, with a fixed coupon of 5.5%, that are guaranteed by XL-Ireland. The notes are listed on the New York Stock Exchange. The notes were issued at 99.115% of the face amount and net proceeds were $488.4 million. Related expenses of the offering amounted to approximately $7.2 million. These costs were deferred and will be amortized over the term of the subordinated notes.

XL-Cayman and the Company were in compliance with all covenants by significant margins as of March 31, 2015, and XL-Cayman and the Company currently remain in compliance with all covenants.

(b) Letter of Credit Facilities and Other Sources of Collateral

The Company has several letter of credit facilities provided on both syndicated and bilateral bases from commercial banks. These facilities are utilized primarily to support non-admitted insurance and reinsurance operations in the U.S. and capital requirements at Lloyd’s. The Company’s letter of credit facilities and revolving credit facilities at March 31, 2015 and December 31, 2014 were as follows:

Letter of Credit Summary: (U.S. dollars in thousands except percentages)	March 31, 2015 (1)			December 31, 2014 (1)
Revolving credit facility (2)	$	1,000,000		$	1,000,000
Available letter of credit facilities - commitments (3)	$	3,575,000		$	3,575,000
Available letter of credit facilities - in use	$	1,743,230		$	1,790,561
Collateralized by certain assets of the Company’s investment portfolio	65.7		%	66.2		%

____________

(1) As of March 31, 2015 and December 31, 2014, there were eight available letter of credit facilities.

(2) As of March 31, 2015 and December 31, 2014, the $1 billion of revolving credit available under the November 2013 unsecured credit agreements, which currently provide an aggregate amount for issuance of letters of credit and revolving credit loans up to $2 billion, was unutilized. The credit agreements entered into with Citicorp USA, Inc. in May through November 2013 (the "Citi Agreements") provide for issuance of letters of credit and revolving credit loans up to an aggregate amount of $575.0 million. As of March 31, 2015, $575.0 million of letters of credit were issued under these agreements and therefore such amount is not included in this line.

(3) The available letter of credit facilities include $1 billion that is also included in the "revolving credit facility" line in this table, as part of the November 2013 credit agreements, which currently provide an aggregate amount of outstanding letters of credit and revolving credit loans of up to $2 billion. The Company has the option to increase the size of the facilities under these agreements by an additional $500 million across such facilities. The Company also has the option to increase the maximum amount of the letters of credit and revolving credit loans available under the 2013 credit agreements with Citicorp USA, Inc. with the lender's and issuing lender's consent.

For details regarding these facilities see Item 8, Note 15(b), “Notes Payable and Debt and Financing Arrangements - Letter of Credit Facilities and Other Sources of Collateral,” to the Consolidated Financial Statements included in our Annual Report on Form 10-K for the year ended December 31, 2014.

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Document And Entity Information	3 Months Ended
	Mar. 31, 2015	May 06, 2015
Document and Entity Information [Abstract]
Entity Registrant Name	XL GROUP PLC
Entity Central Index Key	0000875159
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Mar. 31, 2015
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q1
Amendment Flag	false
Entity Common Stock, Shares Outstanding		306,635,642

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Related Party Transactions

3 Months Ended

Mar. 31, 2015

Related Party Transactions [Abstract]

Related Party Transactions

Related Party Transactions

At each of March 31, 2015 and 2014, the Company owned minority stakes in six and five independent investment management companies (“Investment Manager Affiliates”) that are actively managing client capital and seeking growth opportunities, respectively. The Company seeks to develop relationships with specialty investment management organizations, generally acquiring an equity interest in the business. The Company also invests in certain of the funds and limited partnerships and other legal entities managed by these affiliates, and, through these funds and partnerships, pays management and performance fees to the Company's Investment Manager Affiliates. See Item 8, Note 7, “Investments in Affiliates,” to the Consolidated Financial Statements included in our Annual Report on Form 10-K for the year ended December 31, 2014.

In the normal course of business, the Company enters into assumed reinsurance contracts with certain of its other strategic affiliates, or their subsidiaries. Management believes that these transactions are conducted at market rates consistent with negotiated arm's-length contracts. During the three months ended March 31, 2015 and 2014, these contracts resulted in reported net premiums written, net reported claims and reported acquisition costs as summarized below.

(U.S. dollars in thousands)	Three months ended March 31,
	2015		2014
Reported net premiums written	$	27,076	$	16,240
Net losses and loss expenses incurred	$	9,100	$	6,138
Reported acquisition costs	$	9,012	$	7,629

Commencing in 2014, several of the Company’s wholly-owned subsidiaries retrocede assumed reinsurance business to special purpose reinsurers that receive capital from funds managed by the Company's subsidiary, New Ocean Capital Management Limited, a Bermuda based company, (“New Ocean”), as discussed in Note 12, “Variable Interest Entities”. Underwriting administration services are provided to the special purpose reinsurers by other subsidiaries of the Company under service fee agreements negotiated at arm's-length, while investment advisory services are provided by New Ocean.

During the three months endedMarch 31, 2015, ceded premiums earned, ceded losses and loss expenses incurred, ceding commission income, and other fee income related to these retrocessional contracts were not material to the Company. Management believes that these transactions are conducted at market rates consistent with negotiated arm's-length contracts.

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UNAUDITED CONSOLIDATED STATEMENTS OF INCOME (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Revenues:
Net premiums earned	$ 1,334,000	$ 1,488,839
Net investment income	208,513	233,189
Realized investment gains (losses):
Total net realized gains (losses) on investments, and net unrealized gains (losses) on investments Trading - Life Funds Withheld Assets	52,891	19,229
Net realized and unrealized gains (losses) on derivative instruments	16,521	1,810
Income (loss) from investment fund affiliates	35,329	33,303
Fee income and other	4,728	11,454
Total revenues	1,422,615	1,787,824
Expenses:
Net losses and loss expenses incurred	769,827	831,505
Claims and policy benefits	19,387	113,587
Acquisition costs	153,696	199,414
Operating expenses	325,656	310,424
Foreign exchange (gains) losses	27,390	10,441
Interest expense	51,438	42,941
Total expenses	1,347,394	1,508,312
Income (loss) before income tax and income (loss) from operating affiliates	75,221	279,512
Income (loss) from operating affiliates	22,668	46,285
Provision (benefit) for income tax	24,218	34,321
Net income (loss)	73,671	291,476
Non-controlling interests	37,390	35,759
Net income (loss) attributable to ordinary shareholders	36,281	255,717
Weighted average ordinary shares outstanding - basic	255,724	276,337
Weighted average ordinary shares outstanding - diluted	260,704	280,458
Earnings (loss) per ordinary share and ordinary share equivalent - basic (in dollars per share)	$ 0.14	$ 0.93
Earnings (loss) per ordinary share and ordinary share equivalent - diluted (in dollars per share)	$ 0.14	$ 0.91
Excluding Life Funds Withheld Assets
Revenues:
Net investment income	158,094	233,189
Realized investment gains (losses):
Net realized gains (losses) on investments sold	15,178	22,956
Other-than-temporary impairments on investments	(10,515)	(2,276)
Other-than-temporary impairments on investments transferred to (from) other comprehensive income	(61)	(1,451)
Life Funds Withheld Assets
Revenues:
Net investment income	50,419	0
Realized investment gains (losses):
Net realized gains (losses) on investments sold	52,738	0
Other-than-temporary impairments on investments	(5,209)	0
Net unrealized gains (losses) on investments, trading securities	760	0
Net realized and unrealized gains (losses) on derivative instruments	$ (229,367)	$ 0

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Segment Information

3 Months Ended

Mar. 31, 2015

Segment Reporting [Abstract]

Segment Information

Segment Information

The Company is organized into two operating segments: Insurance and Reinsurance. Subsequent to the transaction as described in Note 3(c), "Acquisition and Disposals - Sale of Life Reinsurance Subsidiary," GCLR reinsures the majority of the Company's life reinsurance business through the Life Retro Arrangements. The Company no longer considers the Life Operations to be a separate operating segment and the results of the Run-Off Life Operations are reported within “Corporate and Other.” The Company’s general investment and financing operations are also reflected in Corporate and Other. The run-off business subject to the Life Retro Arrangements was, prior to June 30, 2014, reported within the Company’s Life operations segment. Prior period information has been recast to reflect the current presentation.

The Company evaluates the performance of both the Insurance and Reinsurance segments based on underwriting profit. Other items of revenue and expenditure of the Company are not evaluated at the segment level. In addition, the Company does not allocate investment assets used to support its Property and Casualty (“P&C”) operations to the individual segments, except as noted below. Investment assets related to the Company’s Run-Off Life Operations and certain structured products included in the Insurance and Reinsurance segments are held in separately identified portfolios. As such, net investment income from these assets is included in the contribution from the applicable segment or in Corporate and Other. The following tables summarize the segment results for the three months ended March 31, 2015 and 2014:

Three Months Ended March 31, 2015 (U.S. dollars in thousands, except ratios)	Insurance			Reinsurance			Total P&C			Corporate and Other (1)			Total
Gross premiums written	$	1,654,747		$	825,662		$	2,480,409		$	74,951		$	2,555,360
Net premiums written	1,089,108			747,635			1,836,743			14,506			1,851,249
Net premiums earned	962,306			357,188			1,319,494			14,506			1,334,000
Net losses and loss expenses	616,947			152,880			769,827			19,387			789,214
Acquisition costs	80,387			71,492			151,879			1,817			153,696
Operating expenses (2)	208,457			42,495			250,952			931			251,883
Underwriting profit (loss)	$	56,515		$	90,321		$	146,836		$	(7,629	)	$	139,207
Net investment income - excluding Life Funds Withheld Assets (3)							132,808			10,210			143,018
Net investment income - Life Funds Withheld Assets										50,419			50,419
Net results from structured products (4)	2,905			2,120			5,025			—			5,025
Net fee income and other (5)	(7,465		)	825			(6,640		)	132			(6,508		)
Net realized gains (losses) on investments - excluding Life Funds Withheld Assets							5,807			(1,205		)	4,602
Net realized gains (losses) on investments and net unrealized gains (losses) on investments, Trading - Life Funds Withheld Assets							—			48,289			48,289
Net realized and unrealized gains (losses) on derivative instruments							—			16,521			16,521
Net realized and unrealized gains (losses) on life retrocession embedded derivative and derivative instruments - Life Funds Withheld Assets							—			(229,367		)	(229,367		)
Net income (loss) from investment fund affiliates and operating affiliates (6)							—			57,997			57,997
Exchange (gains) losses							—			27,390			27,390
Corporate operating expenses							—			62,443			62,443
Contribution from P&C and Corporate and Other							283,836			(144,466		)	139,370
Interest expense (7)										41,481			41,481
Non-controlling interests										37,390			37,390
Income tax expense										24,218			24,218
Net income (loss) attributable to ordinary shareholders													$	36,281
Ratios – P&C operations: (8)
Loss and loss expense ratio	64.1		%	42.8		%	58.3		%
Underwriting expense ratio	30.0		%	31.9		%	30.6		%
Combined ratio	94.1		%	74.7		%	88.9		%

____________

(1) Corporate and Other includes other items of our revenue and expenditures that are not evaluated at the segment level for reporting purposes, as well as the Company's Run-Off Life Operations.

(2) Operating expenses of the segments exclude Corporate operating expenses, shown separately.

(3) Net investment income - excluding Life Funds Withheld Assets does not include net investment income related to the net results from structured products.

(4) The net results from P&C structured products include net investment income and interest expense of $15.1 million and $10.0 million, respectively.

(5) Net fee income and other includes operating expenses from the Company's loss prevention consulting services business.

(6) The Company generally records the income related to the alternative funds and to the private investment and operating fund affiliates on a one-month and three-month lag, respectively.

(7) Interest expense excludes interest expense related to deposit liabilities recorded in the Insurance and Reinsurance segments.

(8) Ratios are based on net premiums earned from P&C operations.

Three Months Ended March 31, 2014 (U.S. dollars in thousands, except ratios)	Insurance			Reinsurance			Total P&C			Corporate and Other (1)			Total
Gross premiums written	$	1,570,926		$	857,713		$	2,428,639		$	84,297		$	2,512,936
Net premiums written	1,127,367			792,173			1,919,540			76,311			1,995,851
Net premiums earned	992,440			420,088			1,412,528			76,311			1,488,839
Net losses and loss expenses	639,193			192,312			831,505			113,587			945,092
Acquisition costs	105,000			87,235			192,235			7,179			199,414
Operating expenses (2)	203,053			40,861			243,914			3,188			247,102
Underwriting profit (loss)	$	45,194		$	99,680		$	144,874		$	(47,643	)	$	97,231
Net investment income - excluding Life Funds Withheld Assets (3)							143,527			70,892			214,419
Net results from structured products (4)	4,890			3,063			7,953			—			7,953
Net fee income and other (5)	(1,212		)	673			(539		)	45			(494		)
Net realized gains (losses) on investments - excluding Life Funds Withheld Assets							17,666			1,563			19,229
Net realized and unrealized gains (losses) on derivative instruments							—			1,810			1,810
Net income (loss) from investment fund affiliates and operating affiliates (6)							—			79,588			79,588
Exchange (gains) losses							—			10,441			10,441
Corporate operating expenses							—			51,338			51,338
Contribution from P&C and Corporate and Other							313,481			44,476			357,957
Interest expense (7)										32,160			32,160
Non-controlling interests										35,759			35,759
Income tax expense										34,321			34,321
Net income (loss) attributable to ordinary shareholders													$	255,717
Ratios – P&C operations: (8)
Loss and loss expense ratio	64.4		%	45.8		%	58.9		%
Underwriting expense ratio	31.0		%	30.5		%	30.8		%
Combined ratio	95.4		%	76.3		%	89.7		%

____________

(1) Corporate and Other includes other items of our revenue and expenditures that are not evaluated at the segment level for reporting purposes, as well as the Company's Run-Off Life Operations and Life Funds Withheld Assets since the sale of XLLR did not occur until May 1, 2014.

(2) Operating expenses of the segments exclude Corporate operating expenses, shown separately.

(3) Net investment income does not include net investment income related to the net results from structured products.

(4) The net results from P&C structured products include net investment income and interest expense of $18.8 million and $10.8 million, respectively.

(5) Net fee income and other includes operating expenses from the Company's loss prevention consulting services business.

(6) The Company generally records the income related to the alternative funds and to the private investment and operating fund affiliates on a one-month and three-month lag, respectively.

(7) Interest expense excludes interest expense related to deposit liabilities recorded in the Insurance and Reinsurance segments.

(8) Ratios are based on net premiums earned from P&C operations.

The following tables summarize the Company’s net premiums earned by line of business for the three months ended March 31, 2015 and 2014:

Three Months Ended March 31, 2015 (U.S. dollars in thousands)	Insurance		Reinsurance		Corporate and Other			Total
P&C Operations:
Professional	$	266,411	$	35,008	$	—		$	301,419
Casualty	309,335		58,208		—			367,543
Property catastrophe	—		94,073		—			94,073
Property	128,241		131,224		—			259,465
Marine, energy, aviation and satellite	—		18,075		—			18,075
Specialty	184,724		—		—			184,724
Other (1)	73,595		20,600		—			94,195
Total P&C Operations	$	962,306	$	357,188	$	—		$	1,319,494
Corporate and Other:
Run-off Life operations - Annuity	$	—	$	—	$	(1	)	$	(1	)
Run-off Life operations - Other Life	—		—		14,507			14,507
Total Corporate and Other	$	—	$	—	$	14,506		$	14,506
Total	$	962,306	$	357,188	$	14,506		$	1,334,000
Three Months Ended March 31, 2014 (U.S. dollars in thousands)	Insurance		Reinsurance		Corporate and Other			Total
P&C Operations:
Professional	$	275,427	$	50,104	$	—		$	325,531
Casualty	344,004		76,721		—			420,725
Property catastrophe	—		108,437		—			108,437
Property	139,733		135,239		—			274,972
Marine, energy, aviation and satellite	—		23,514		—			23,514
Specialty	176,909		—		—			176,909
Other (1)	56,367		26,073		—			82,440
Total P&C Operations	$	992,440	$	420,088	$	—		$	1,412,528
Corporate and Other:
Run-off Life operations - Annuity	$	—	$	—	$	31,797		$	31,797
Run-off Life operations - Other Life	—		—		44,514			44,514
Total Corporate and Other	$	—	$	—	$	76,311		$	76,311
Total	$	992,440	$	420,088	$	76,311		$	1,488,839

____________

(1) Other within the Insurance segment includes: excess and surplus, programs, surety, structured indemnity and certain discontinued lines. Other within the Reinsurance segment includes: whole account contracts, accident and health and other lines.

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Fair Value Measurements

3 Months Ended

Mar. 31, 2015

Fair Value Disclosures [Abstract]

Fair Value Measurements

Fair Value Measurements

Fair value is defined as the amount that would be received for the sale of an asset or paid to transfer a liability (an exit price), in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants as of the measurement date. Applicable accounting guidance provides an established hierarchy for inputs used in measuring fair value that maximizes the use of observable inputs and minimizes the use of unobservable inputs by requiring that the most observable inputs be used when available. Observable inputs are inputs that market participants would use in valuing the asset or liability and are developed based on market data obtained from sources independent of the Company. Unobservable inputs are inputs that reflect the Company’s assumptions about the factors that market participants would use in valuing the asset or liability. Assets and liabilities are classified based on the lowest level of input that is significant to the fair value measurements. The Company reviews the fair value hierarchy classification on a quarterly basis. Changes in the observability of valuation inputs may result in a reclassification of levels for certain securities within the fair value hierarchy.

The fair values for available for sale investments are generally sourced from third parties. The fair value of fixed income securities is based upon quoted market values where available, “evaluated bid” prices provided by third party pricing services (“pricing services”) where quoted market values are not available, or by reference to broker quotes where pricing services do not provide coverage for a particular security. While the Company receives values for the majority of the investment securities it holds from pricing services, it is ultimately management’s responsibility to determine whether the values received and recorded in the financial statements are representative of appropriate fair value measurements.

The Company performs regular reviews of the prices received from its third party valuation sources to assess if the prices represent a reasonable estimate of the fair value. This process is completed by investment and accounting personnel who are independent of those responsible for obtaining the valuations. The approaches taken by the Company include, but are not limited to, annual reviews of the controls of the external parties responsible for sourcing valuations, which are subjected to automated tolerance checks, quarterly reviews of the valuation sources and dates, and monthly reconciliations between the valuations provided by our external parties and valuations provided by our third party investment managers at a portfolio level.

Where broker quotes are the primary source of the valuations, sufficient information regarding the specific inputs utilized by the brokers is generally not available to support a Level 2 classification. The Company obtains the majority of broker quoted values from third party investment managers who perform independent verifications of these valuations using pricing matrices based upon information gathered by market traders. In addition, for the majority of these securities, the Company compares the broker quotes to independent valuations obtained from third party pricing vendors, which may also consist of broker quotes, to assess if the prices received represent a reasonable estimate of the fair value.

As discussed in Note 3(c), “Acquisition and Disposals - Sale of Life Reinsurance Subsidiary,” under the Life Retro Arrangements, all of the investment results associated with the Life Funds Withheld Assets ultimately accrue to GCLR. Because the Company no longer shares in the risks and rewards of the underlying performance of the Life Funds Withheld Assets, the financial statements and accompanying notes included herein separately report the Life Funds Withheld Assets from the rest of the Company's investments.

For further information about the Company's fair value measurements, see Item 8, Note 2(b), “Significant Accounting Policies - Fair Value Measurements,” to the Consolidated Financial Statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2014.

(a) Fair Value Summary

The following tables set forth the Company’s assets and liabilities that were accounted for at fair value as of March 31, 2015 and December 31, 2014 by level within the fair value hierarchy:

March 31, 2015 (U.S. dollars in thousands)	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Other Unobservable Inputs (Level 3)		Collateral and Counterparty Netting			Balance at March 31, 2015
Assets
Fixed maturities - Available for Sale ("AFS") - Excluding Life Funds Withheld Assets
U.S. Government and Government-Related/Supported	$	—	$	3,378,342	$	—	$	—		$	3,378,342
Corporate (1)	—		8,148,777		5,861		—			8,154,638
Residential mortgage-backed securities – Agency (“RMBS - Agency”)	—		3,709,514		1,820		—			3,711,334
Residential mortgage-backed securities – Non-Agency (“RMBS - Non-Agency”)	—		380,135		—		—			380,135
Commercial mortgage-backed securities (“CMBS”)	—		1,032,720		—		—			1,032,720
Collateralized debt obligations (“CDO”)	—		4,051		496,923		—			500,974
Other asset-backed securities	—		1,165,123		2,244		—			1,167,367
U.S. States and political subdivisions of the States	—		1,973,140		—		—			1,973,140
Non-U.S. Sovereign Government, Provincial, Supranational and Government-Related/Supported	—		4,093,771		—		—			4,093,771
Total fixed maturities - AFS - Excluding Funds Withheld Assets, at fair value	$	—	$	23,885,573	$	506,848	$	—		$	24,392,421
Equity securities, at fair value	497,496		285,975		—		—			783,471
Short-term investments, at fair value (1)(2)	—		168,862		—		—			168,862
Total investments AFS - Excluding Funds Withheld Assets	$	497,496	$	24,340,410	$	506,848	$	—		$	25,344,754
Fixed maturities - Life Funds Withheld Assets
U.S. Government and Government-Related/Supported	$	—	$	17,613	$	—	$	—		$	17,613
Corporate	—		2,746,226		—		—			2,746,226
RMBS – Agency	—		2,130		—		—			2,130
RMBS – Non-Agency	—		38,808		—		—			38,808
CMBS	—		159,257		—		—			159,257
Other asset-backed securities	—		244,140		—		—			244,140
Non-U.S. Sovereign Government, Provincial, Supranational and Government-Related/Supported	—		1,509,805		—		—			1,509,805
Total fixed maturities - AFS - Life Funds Withheld Assets, at fair value	$	—	$	4,717,979	$	—	$	—		$	4,717,979
Total investments - AFS, at fair value	$	497,496	$	29,058,389	$	506,848	$	—		$	30,062,733
Fixed maturities - trading securities ("Trading")
Corporate	—		137,438		—		—			137,438
Other asset-backed securities	—		1,939		—		—			1,939
Total fixed maturities - Trading, at fair value	$	—	$	139,377	$	—	$	—		$	139,377
Cash equivalents (3)	1,835,344		393,154		—		—			2,228,498
Cash equivalents - Life Funds Withheld Assets (3)	788		120,721		—		—			121,509
Other investments (4)	—		784,486		190,097		—			974,583
Other assets (5)	—		244,900		12,980		(587		)	257,293
Total assets accounted for at fair value	$	2,333,628	$	30,741,027	$	709,925	$	(587	)	$	33,783,993
Liabilities
Funds withheld on life retrocession arrangements (net of future policy benefit reserves recoverable) (6)	$	—	$	654,561	$	—	$	—		$	654,561
Financial instruments sold, but not yet purchased (7)	1,572		5,660		—		—			7,232
Other liabilities (5)	—		99,649		22,586		(587		)	121,648
Total liabilities accounted for at fair value	$	1,572	$	759,870	$	22,586	$	(587	)	$	783,441

December 31, 2014 (U.S. dollars in thousands)	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Other Unobservable Inputs (Level 3)		Collateral and Counterparty Netting			Balance at December 31, 2014
Assets
Fixed maturities - AFS - Excluding Life Funds Withheld Assets
U.S. Government and Government-Related/Supported	$	—	$	2,171,953	$	—	$	—		$	2,171,953
Corporate (1)	—		8,772,479		5,894		—			$	8,778,373
Residential mortgage-backed securities – RMBS - Agency	—		3,726,666		1,910		—			$	3,728,576
Residential mortgage-backed securities – RMBS - Non-Agency	—		427,351		—		—			$	427,351
CMBS	—		1,052,544		—		—			$	1,052,544
CDO	—		4,076		687,958		—			$	692,034
Other asset-backed securities	—		1,060,005		5,288		—			$	1,065,293
U.S. States and political subdivisions of the States	—		2,021,272		—		—			$	2,021,272
Non-U.S. Sovereign Government, Provincial, Supranational and Government-Related/Supported	—		4,240,073		—		—			$	4,240,073
Total fixed maturities - AFS - Excluding Funds Withheld Assets, at fair value	$	—	$	23,476,419	$	701,050	$	—		$	24,177,469
Equity securities, at fair value	502,284		366,008		—		—			868,292
Short-term investments, at fair value (1)(2)	—		256,727		—		—			256,727
Total investments AFS - Excluding Funds Withheld Assets	$	502,284	$	24,099,154	$	701,050	$	—		$	25,302,488
Fixed maturities - Life Funds Withheld Assets
U.S. Government and Government-Related/Supported	$	—	$	18,724	$	—	$	—		$	18,724
Corporate	—		2,817,980		—		—			$	2,817,980
RMBS – Agency	—		3,782		—		—			$	3,782
RMBS – Non-Agency	—		85,335		—		—			$	85,335
CMBS	—		193,167		—		—			$	193,167
Other asset-backed securities	—		273,541		—		—			$	273,541
Non-U.S. Sovereign Government, Provincial, Supranational and Government-Related/Supported	—		1,789,036		—		—			$	1,789,036
Total fixed maturities - AFS - Life Funds Withheld Assets, at fair value	$	—	$	5,181,565	$	—	$	—		$	5,181,565
Total investments - AFS, at fair value	$	502,284	$	29,280,719	$	701,050	$	—		$	30,484,053
Fixed maturities - Trading
Corporate	—		1,171		—		—			$	1,171
Total fixed maturities - Trading, at fair value	$	—	$	1,171	$	—	$	—		$	1,171
Cash equivalents (3)	1,103,877		397,955		—		—			$	1,501,832
Cash equivalents - Life Funds Withheld Assets (3)	460		132,738		—		—			$	133,198
Other investments (4)	—		708,974		185,083		—			$	894,057
Other assets (5)	—		122,996		13,663		(696		)	$	135,963
Total assets accounted for at fair value	$	1,606,621	$	30,644,553	$	899,796	$	(696	)	$	33,150,274
Liabilities
Funds withheld on life retrocession arrangements (net of future policy benefit reserves recoverable) (6)	$	—	$	450,831	$	—	$	—		$	450,831
Financial instruments sold, but not yet purchased (7)	4,737		25,669		—		—			$	30,406
Other liabilities (5)	—		7,757		23,427		(696		)	$	30,488
Total liabilities accounted for at fair value	$	4,737	$	484,257	$	23,427	$	(696	)	$	511,725

____________

(1) Included are certain medium term notes supported primarily by pools of European investment grade credit with varying degrees of leverage. The notes had a fair value of $74.8 million and $79.9 million and an amortized cost of $63.8 million and $68.4 million as of March 31, 2015 and December 31, 2014, respectively. These notes allow the investor to participate in cash flows of the underlying bonds including certain residual values, which could serve to either decrease or increase the ultimate values of these notes.

(2) Short-term investments consist primarily of Corporate securities and U.S. and Non-U.S. Government and Government-Related/Supported securities.

(3) Cash equivalents balances subject to fair value measurement include certificates of deposit and money market funds. Operating cash balances are not subject to recurring fair value measurement guidance.

(4) The Other investments balance excludes certain structured transactions including certain investments in project finance transactions, a payment obligation and liquidity financing provided to a structured credit vehicle as a part of a third party medium term note facility. These investments, which totaled $354.4 million as of March 31, 2015 and $354.4 million at December 31, 2014, are carried at amortized cost. For further information, see Item 8, Note 8, “Other Investments,” to the Consolidated Financial Statements included in our Annual Report on Form 10-K for the year ended December 31, 2014.

(5) Other assets and other liabilities include derivative instruments. The derivative balances included in each category are reported on a gross basis by level with a netting adjustment presented separately in the Collateral and Counterparty Netting column. The fair values of the individual derivative contracts are reported gross in their respective levels based on the fair value hierarchy. For further details regarding derivative fair values and associated collateral received or paid see Note 7, “Derivative Instruments,” to the Unaudited Consolidated Financial Statements.

(6) Funds withheld on life retrocession arrangements (net of future policy benefit reserves recoverable) include balances related to the life retrocession embedded derivative, under which all investment results associated with the Life Funds Withheld Assets related to the Life Retro Arrangements described in Note 3(c), ”Acquisition and Disposals - Sale of Life Reinsurance Subsidiary," accrue to the benefit of GCLR.

(7) Financial instruments sold, but not yet purchased, represent “short sales” and are included within “Payable for investments purchased” on the balance sheets.

(b) Level 3 Assets and Liabilities

The tables below present additional information about assets and liabilities measured at fair value on a recurring basis and for which Level 3 inputs were utilized to determine fair value. The tables present a reconciliation of the beginning and ending balances for the three months ended March 31, 2015 and 2014 for all financial assets and liabilities measured at fair value using significant unobservable inputs (Level 3) at March 31, 2015 and 2014, respectively. The tables do not include gains or losses that were reported in Level 3 in prior periods for assets that were transferred out of Level 3 prior to March 31, 2015 and 2014, respectively. Gains and losses for assets and liabilities classified within Level 3 in the table below may include changes in fair value that are attributable to both observable inputs (Levels 1 and 2) and unobservable inputs (Level 3). Further, it should be noted that the following tables do not take into consideration the effect of offsetting Level 1 and 2 financial instruments entered into by the Company that are either economically hedged by certain exposures to the Level 3 positions or that hedge the exposures in Level 3 positions.

In general, Level 3 assets include securities for which values were obtained from brokers where either significant inputs were utilized in determining the values that were difficult to corroborate with observable market data, or sufficient information regarding the specific inputs utilized by the broker was not available to support a Level 2 classification. Transfers into or out of Level 3 primarily arise as a result of the valuations utilized by the Company changing between either those provided by independent pricing services that do not contain significant unobservable inputs and other valuations sourced from brokers that are considered Level 3.

There were no significant transfers between Level 1 and Level 2 during each of the three months ended March 31, 2015 and 2014.

	Level 3 Assets and Liabilities -Three Months Ended March 31, 2015
(U.S. dollars in thousands)	Corporate			RMBS - Agency			RMBS - Non Agency		CMBS			CDO
Balance, beginning of period	$	5,894		$	1,910		$	—	$	—		$	687,958
Realized gains (losses)	(1		)	—			—		—			36
Movement in unrealized gains (losses)	48			(1		)	—		—			5,555
Purchases and issuances	—			—			—		—			—
Sales	—			—			—		—			(155,085		)
Settlements	(80		)	(89		)	—		—			(41,541		)
Transfers into Level 3				—			—		—			—
Transfers out of Level 3	—			—			—		—			—
Fixed maturities to short-term investments classification change	—			—			—		—			—
Balance, end of period	$	5,861		$	1,820		$	—	$	—		$	496,923
Movement in total gains (losses) above relating to instruments still held at the reporting date	$	48		$	(1	)	$	—	$	—		$	2,668
	Level 3 Assets and Liabilities -Three Months Ended March 31, 2015
(U.S. dollars in thousands)	Other asset- backed securities			Non-US Sovereign Government, Provincial, Supranational and Government Related/Supported			Short-term investments		Other investments			Derivative Contracts - Net
Balance, beginning of period	$	5,288		$	—		$	—	$	185,083		$	(9,764	)
Realized gains (losses)	(1		)	—			—		1,302			—
Movement in unrealized gains (losses)	2			—			—		(1,827		)	158
Purchases and issuances	—			—			—		6,793			—
Sales	—			—			—		—
Settlements	(3,045		)	—			—		(1,254		)	—
Transfers into Level 3	—			—			—		—			—
Transfers out of Level 3	—			—			—		—			—
Fixed maturities to short-term investments classification change	—			—			—		—			—
Balance, end of period	$	2,244		$	—		$	—	$	190,097		$	(9,606	)
Movement in total gains (losses) above relating to instruments still held at the reporting date	$	—		$	—		$	—	$	(524	)	$	158

	Level 3 Assets and Liabilities -Three Months Ended March 31, 2014
(U.S. dollars in thousands)	Corporate			RMBS - Agency			RMBS - Non Agency			CMBS			CDO
Balance, beginning of period	$	31,573		$	10,473		$	9		$	12,533		$	710,253
Realized gains (losses)	120			(1		)	—			2			1,581
Movement in unrealized gains (losses)	(2		)	1			2			(3		)	3,681
Purchases and issuances	1,434			—			—			—			27,814
Sales	—			—			—			—			(9,931		)
Settlements	(5,114		)	(573		)	—			(6,606		)	(14,571		)
Transfers into Level 3	—			—			—			—			—
Transfers out of Level 3	(23,629		)	(972		)	—			—			—
Fixed maturities to short-term investments classification change	—			—			—			—			—
Balance, end of period	$	4,382		$	8,928		$	11		$	5,926		$	718,827
Movement in total gains (losses) above relating to instruments still held at the reporting date	$	148		$	—		$	2		$	—		$	4,969
	Level 3 Assets and Liabilities -Three Months Ended March 31, 2014
(U.S. dollars in thousands)	Other asset- backed securities			Non-US Sovereign Government, Provincial, Supranational and Government Related/Supported			Short-term investments			Other investments			Derivative Contracts - Net
Balance, beginning of period	$	11,877		$	—		$	2,015		$	113,472		$	(29,110	)
Realized gains (losses)	(15		)	—			—			3,566			—
Movement in unrealized gains (losses)	62			—			(15		)	1,494			(3,386		)
Purchases and issuances	—			—			—			11,089			—
Sales	—			—			—			—			—
Settlements	(1,251		)	—			(2,000		)	(13,203		)	—
Transfers into Level 3	—			—			—			—			—
Transfers out of Level 3	—			—			—			—			—
Fixed maturities to short-term investments classification change	—			—			—			—			—
Balance, end of period	$	10,673		$	—		$	—		$	116,418		$	(32,496	)
Movement in total gains (losses) above relating to instruments still held at the reporting date	$	46		$	—		$	—		$	5,061		$	(3,386	)

(c) Fixed maturities and short-term investments

The Company’s Level 3 assets consist primarily of CDOs, for which non-binding broker quotes are the primary source of the valuations. Sufficient information regarding the specific inputs utilized by the brokers was not available to support a Level 2 classification. The Company obtains the majority of broker quotes for these CDOs from third party investment managers who perform independent verifications of these valuations using pricing matrices based upon information gathered by market traders. In addition, for the majority of these securities, the Company compares the broker quotes to independent valuations obtained from third party pricing vendors, which may also consist of broker quotes, to assess if the prices received represent a reasonable estimate of the fair value. Although the Company does not have access to the specific unobservable inputs that may have been used in the fair value measurements of the CDO securities provided by brokers, we would expect that the significant inputs considered are prepayment rates, probability of default, loss severity in the event of default, recovery rates, liquidity premium and reinvestment rates. Significant increases (decreases) in any of those inputs in isolation could result in a significantly different fair value measurement. Generally, a change in the assumption used for the probability of default is accompanied by a directionally similar change in the assumption used for the loss severity and a directionally opposite change in the assumption used for prepayment rates.

The remainder of the Level 3 assets relate primarily to private investment funds and certain derivative positions as described below.

(d) Other investments

Included within the Other investments component of the Company’s Level 3 valuations are private investments and alternative fund investments where the Company is not deemed to have significant influence over the investee. The fair value of these investments is based upon net asset values received from the investment manager or general partner of the respective entity. The nature of the underlying investments held by the investee that form the basis of the net asset value include assets such as private business ventures and are such that significant Level 3 inputs are utilized in the determination of the individual underlying holding values and, accordingly, the fair value of the Company’s investment in each entity is classified within Level 3. The Company has not adjusted the net asset values received; however, management incorporates factors such as the most recent financial information received, annual audited financial statements and the values at which capital transactions with the investee take place when applying judgment regarding whether any adjustments should be made to the net asset value in recording the fair value of each position. Investments in alternative funds included in Other investments utilize strategies including arbitrage, directional, event driven and multi-style. These funds potentially have lockup and gate provisions which may limit redemption liquidity. For further details regarding the nature of Other investments and related features see Item 8, Note 8, “Other Investments,” to the Consolidated Financial Statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2014.

(e) Derivative instruments

Derivative instruments recorded within Other liabilities and classified within Level 3 include credit derivatives sold providing protection on senior tranches of structured finance transactions where the value is obtained directly from the investment bank counterparty and sufficient information regarding the inputs utilized in such valuation was not obtained to support a Level 2 classification and guaranteed minimum income benefits embedded within one reinsurance contract. The majority of inputs utilized in the valuations of these types of derivative contracts are considered Level 1 or Level 2; however, each valuation includes at least one Level 3 input that was significant to the valuation and, accordingly, the values are disclosed within Level 3.

The calculation of the change in fair value of the embedded derivative associated with the Life Retro Arrangements includes the interest income, realized and unrealized gains and losses on Life Funds Withheld Assets and certain related expenses related to the Life Funds Withheld Assets. The fair value of the embedded derivative is included in “Funds withheld on life retrocession arrangements, net of future policy benefit reserves recoverable” on the consolidated balance sheets. The fair value of the embedded derivative is considered a Level 2 valuation.

(f) Financial Instruments Not Carried at Fair Value

Authoritative guidance over disclosures about the fair value of financial instruments requires additional disclosure of fair value information for financial instruments not carried at fair value in both interim and annual reporting periods. Certain financial instruments, particularly insurance contracts, are excluded from these fair value disclosure requirements. The carrying values of cash and cash equivalents, accrued investment income, net receivable from investments sold, other assets, net payable for investments purchased, other liabilities and other financial instruments not included below approximated their fair values. The following table includes financial instruments for which the carrying value differs from the estimated fair values as of March 31, 2015 and December 31, 2014. All of these fair value estimates are considered Level 2 fair value measurements. The fair values for fixed maturities held to maturity are provided by third party pricing vendors and significant valuation inputs for all other items included were based upon market data obtained from sources independent of the Company, and are subject to the same control environment previously described.

	March 31, 2015				December 31, 2014
(U.S. dollars in thousands)	Carrying Value		Fair Value		Carrying Value		Fair Value
Financial Assets - Other investments, structured transactions	$	354,352	$	367,491	$	354,382	$	371,625
Deposit liabilities	$	1,211,203	$	1,528,570	$	1,245,367	$	1,543,761
Notes payable and debt	2,643,561		2,957,605		1,662,580		1,897,854
Financial Liabilities	$	3,854,764	$	4,486,175	$	2,907,947	$	3,441,615

The Company historically participated in structured transactions. Remaining structured transactions include cash loans supporting project finance transactions, a liquidity facility financing provided to structured project deals and an investment in a payment obligation with an insurance company. These transactions are carried at amortized cost. The fair value of these investments held by the Company is determined through use of internal models utilizing reported trades, benchmark yields, broker/dealer quotes, issuer spreads, two-sided markets, benchmark securities, bids, offers and reference data.

Deposit liabilities include obligations under structured insurance and reinsurance transactions. For purposes of fair value disclosures, the Company determined the estimated fair value of the deposit liabilities by assuming a discount rate equal to the appropriate U.S. Treasury rate plus 33.4 basis points and 29.5 basis points as of March 31, 2015 and December 31, 2014, respectively. The discount rate incorporates the Company’s own credit risk into the determination of estimated fair value.

The fair values of the Company’s notes payable and debt outstanding were determined based on quoted market prices.

There are no significant concentrations of credit risk within the Company’s financial instruments as defined in the authoritative guidance over disclosures of fair value of financial instruments not carried at fair value, which excludes certain financial instruments, particularly insurance contracts.

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Significant Accounting Policies (Policies)

3 Months Ended

Mar. 31, 2015

Accounting Policies [Abstract]

Recent accounting pronouncements

Recent Accounting Pronouncements

In February 2015, the Financial Accounting Standards Board ("FASB") issued an accounting standards update concerning consolidation of certain legal entities. Under this new guidance, all legal entities are required to evaluate whether they should consolidate certain legal entities. The guidance: (1) modifies the evaluation of whether limited partnerships and similar legal entities are variable interest entities ("VIEs") or voting interest entities; (2) eliminates the presumption that a general partner should consolidate a limited partnership; (3) affects the consolidation analysis of reporting entities that are involved with VIEs, particularly those that have fee arrangements and related party relationships; and (4) provides a scope exception from consolidation guidance for certain reporting entities. Upon adoption of the new guidance, differing requirements for performing a consolidation analysis under existing GAAP will be eliminated, and all reporting entities will now fall within the scope of the Accounting Standards Codification Subtopic 810-10, Consolidation-Overall, unless a specific exception applies. Under this Subtopic, there are only two primary models for determining whether consolidation is appropriate - a voting interest entity model, and a variable interest entity model. The guidance is effective for public business entities for annual periods ending after December 15, 2015, and interim and annual periods thereafter, with early adoption permitted. The Company is currently evaluating the impact of this guidance.

In April 2015, the FASB issued an accounting standards update concerning the presentation of deferred debt issuance costs in an entity's balance sheet. Under this new guidance, which is part of the FASB's initiative to reduce complexity in accounting standards while maintaining or improving the usefulness of the information provided to users of financial statements, it is required that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts. In addition, the guidance also requires that the amortization of such costs be reported as interest expense. The guidance is effective for public business entities for annual periods beginning after December 31, 2015, and interim periods within those fiscal years, with early adoption permitted for financial statements that have not been previously issued. This guidance is not expected to have a material impact on the Company's financial condition, results of operations or cash flows.

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Variable Interest Entities

3 Months Ended

Mar. 31, 2015

Variable Interest Entities Disclosure [Abstract]

Variable Interest Entities

Variable Interest Entities

At times, the Company has utilized variable interest entities (“VIEs”) both indirectly and directly in the ordinary course of the Company's business.

The Company invests in CDOs and other investment vehicles that are issued through VIEs as part of the Company's investment portfolio. The activities of these VIEs are generally limited to holding the underlying collateral used to service investments therein. The Company's involvement in these entities is passive in nature and we are not the arranger of these entities. In addition, the Company has not been involved in establishing these entities and is not the primary beneficiary of these VIEs as contemplated in current authoritative accounting guidance.

The Company has a limited number of remaining outstanding credit enhancement exposures, including written financial guarantee and credit default swap contracts. The obligations related to these transactions are often securitized through VIEs. The Company is not the primary beneficiary of these VIEs as contemplated in current authoritative accounting guidance on the basis that management does not believe that the Company has the power to direct the activities, such as asset selection and collateral management, which most significantly impact each entity's economic performance. For further details on the nature of the obligations and the size of the Company's maximum exposure, see Note 7, “Derivative Instruments,” and Note 14(a), “Commitments and Contingencies - Financial Guarantee Exposures.”

During the third quarter of 2013, the Company, along with other investors, formed New Ocean to act as an investment manager focused on providing third-party investors access to insurance-linked securities and other insurance and reinsurance capital markets products. The Company holds a majority voting interest in New Ocean through its ownership of common shares and, accordingly, the financial statements of New Ocean have been included in the consolidated financial statements of the Company. None of the assets, liabilities, revenues or net income of New Ocean was material to the Company during the three months endedMarch 31, 2015. The equity interest attributable to third party investors in New Ocean recorded in the Company’s Unaudited Consolidated Balance Sheets as "Non-controlling interest in equity of consolidated subsidiaries" was $0.2 million and $0.2 million as of March 31, 2015 and December 31, 2014, respectively.

During the fourth quarter of 2013, the Company, along with other investors, invested in a new Bermuda-based company, New Ocean Focus Cat Fund Ltd. ("New Ocean FCFL"), which is considered a VIE under GAAP. During the second quarter of 2014, the Company formed another new Bermuda-based investment company, New Ocean Market Value Cat Fund, Ltd. ("New Ocean MVCFL"), which is also considered a VIE under GAAP. New Ocean MVCFL primarily invests in insurance-linked securities, with a current focus on catastrophe bonds.

During the year ended December 31, 2014, New Ocean FCFL invested in a special purpose Bermuda reinsurer, Vector Reinsurance Ltd (“Vector Re”), formed for the purpose of underwriting collateralized excess of loss reinsurance with a focus on global property catastrophe risks. During the first quarter of 2015, New Ocean MVCFL also invested in Vector Re. Most of Vector Re’s current underwriting activity relates to reinsurance business assumed from the Company's subsidiaries. Underwriting administration and claims services are provided to Vector Re by the Company under service fee contracts which management believes were negotiated at arm's-length, while investment advisory services are provided by New Ocean.

The Company currently holds majority equity interests, which are considered to be the controlling financial interests, in New Ocean FCFL and New Ocean MVCFL, and by extension, Vector Re. Accordingly, included in the consolidated financial statements of the Company are the total net assets of New Ocean FCFL, New Ocean MVCFL and Vector Re of $141.3 million and $139.9 million as of March 31, 2015 and December 31, 2014, respectively. The Company’s share of revenue and net income in these VIEs was not material to the Company for three months endedMarch 31, 2015. All inter-company transactions between the Company's entities have been eliminated in consolidation. The equity interest attributable to third party investors in New Ocean FCFL, New Ocean MVCFL and Vector Re recorded in the Company’s Consolidated Balance Sheets as "Non-controlling interest in equity of consolidated subsidiaries" was $58.8 million and $58.4 million as of March 31, 2015 and December 31, 2014, respectively.

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Goodwill and Other Intangible Assets

3 Months Ended

Mar. 31, 2015

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and other Intangible Assets

Goodwill and Other Intangible Assets

During the first quarter of 2014, goodwill and intangible assets increased as a result of the completion of an acquisition. The transaction was accounted for using the acquisition method under which the Company recorded the identifiable assets and liabilities at their acquisition date fair values, and recorded the excess of consideration transferred over the net assets acquired as goodwill and intangible assets. The fair value of identifiable assets and liabilities acquired, as well as amounts recorded in the Company’s consolidated results since the acquisition date, are not material. The Company has goodwill and intangible assets of $442.4 million and $448.0 million at March 31, 2015 and December 31, 2014, respectively, predominantly related to the Reinsurance segment. The movement of this balance during the year to date is a result of the amortization of intangible assets with definite lives, and the impact of foreign currency translation.

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Derivative Instruments - Narrative (Details) (USD $)	3 Months Ended
	Mar. 31, 2015		Mar. 31, 2014		Dec. 31, 2014
Derivative [Line Items]
Cumulative net realized and unrealized loss on life retrocession embedded derivative	$ (654,600,000)
Gross amounts recognized in balance sheet	257,880,000				136,659,000
Net realized and unrealized gains (losses) on derivative instruments	16,521,000		1,810,000
Gross amounts not offset in the balance sheet - cash collateral	183,675,000				78,580,000
Net results from structured products	5,025,000	[1]	7,953,000	[2]
Fair value hedges | Deposit liabilities
Derivative [Line Items]
Remaining balance	135,490,000		191,925,000
Structured Indemnity [Member] | Fair value hedges | Deposit liabilities
Derivative [Line Items]
Remaining balance	47,000,000
Structured Indemnity [Member] | Interest expense
Derivative [Line Items]
Net results from structured products	28,700,000
Derivatives not designated as hedging instruments
Derivative [Line Items]
Derivative Asset, Notional Amount	2,770,578,000				592,791,000
Gross amounts recognized in balance sheet	219,504,000	[3]			14,797,000	[3]
Other non-investment derivatives | Derivatives not designated as hedging instruments | Other Credit Derivatives [Member]
Derivative [Line Items]
Derivative Asset, Notional Amount	31,060,000				31,060,000
Gross amounts recognized in balance sheet	218,000				60,000
Net realized and unrealized gains (losses) on derivative instruments	$ 100,000

[1] The net results from P&C structured products include net investment income and interest expense of $15.1 million and $10.0 million, respectively.

[2] The net results from P&C structured products include net investment income and interest expense of $18.8 million and $10.8 million, respectively.

[3] Derivative instruments in an asset or liability position are included within Other assets or Other liabilities, respectively, in the balance sheets on a net basis where the Company has both a legal right of offset and the intention to settle the contracts on a net basis.

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Investments

3 Months Ended

Mar. 31, 2015

Investments, Debt and Equity Securities [Abstract]

Investments

Investments

(a) Fixed Maturities, Short-Term Investments and Equity Securities

Classification of Fixed Income Securities

During the second quarter of 2014, fixed maturities with a carrying value of $2.8 billion were reclassified from held to maturity ("HTM") to AFS in conjunction with the sale of XLLR as discussed in Note 3(c), “Acquisition and Disposals - Sale of Life Reinsurance Subsidiary." As a result, the Company no longer holds HTM securities. Gross unrealized gains and gross unrealized losses, net of tax, of $424.9 million and nil, respectively, related to these securities were recognized in other comprehensive income on the date of transfer. For certain annuity contracts that are subject to the Life Retro Arrangements, policy benefit reserves were historically increased for the impact of changes in unrealized gains on investments supporting such contracts as if the gains had been realized, with a corresponding entry to other comprehensive income ("Shadow Adjustments"). In conjunction with the sale of XLLR and the related reclassification of securities from HTM to AFS, the Company recorded an additional gross charge of $440.5 million, net of tax, as a reduction of comprehensive income for such Shadow Adjustments on the date of the transfer. See Note 15, "Accumulated Other Comprehensive Income (Loss)," for further information.

All of the reclassified securities are included within the Life Funds Withheld Assets, along with certain other available for sale securities as defined in the sale and purchase agreement. The Life Funds Withheld Assets are managed pursuant to agreed investment guidelines that meet the contractual commitments of the XL ceding companies and applicable laws and regulations. All of the investment results associated with the Life Funds Withheld Assets ultimately accrue to GCLR. Because the Company no longer shares in the risks and rewards of the underlying performance of the Life Funds Withheld Assets, disclosures within the financial statements and accompanying notes included herein separate the Life Funds Withheld Assets from the rest of the Company's investments.

Amortized Cost and Fair Value Summary

The cost (amortized cost for fixed maturities and short-term investments), fair value, gross unrealized gains and gross unrealized (losses), including OTTI recorded in accumulated other comprehensive income (“AOCI”) of the Company’s AFS investments as of March 31, 2015 and December 31, 2014, were as follows:

March 31, 2015 (U.S. dollars in thousands)	Cost or Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value		Non-credit Related OTTI (1)
Fixed maturities - AFS - Excluding Life Funds Withheld Assets
U.S. Government and Government-Related/Supported	$	3,299,458	$	87,025	$	(8,141	)	$	3,378,342	$	—
Corporate (2)	7,806,607		398,357		(50,326		)	8,154,638		(3,309		)
RMBS – Agency	3,585,638		131,468		(5,772		)	3,711,334		—
RMBS – Non-Agency	368,317		29,770		(17,952		)	380,135		(58,364		)
CMBS	1,010,518		25,603		(3,401		)	1,032,720		(1,801		)
CDO	520,929		1,675		(21,630		)	500,974		(1,648		)
Other asset-backed securities (2)	1,134,928		41,386		(8,947		)	1,167,367		(1,662		)
U.S. States and political subdivisions of the States	1,842,561		131,843		(1,264		)	1,973,140		—
Non-U.S. Sovereign Government, Provincial, Supranational and Government-Related/Supported	4,010,656		154,829		(71,714		)	4,093,771		—
Total fixed maturities - AFS - Excluding Life Funds Withheld Assets	$	23,579,612	$	1,001,956	$	(189,147	)	$	24,392,421	$	(66,784	)
Total short-term investments - Excluding Life Funds Withheld Assets	$	169,903	$	149	$	(1,190	)	$	168,862	$	—
Total equity securities - Excluding Life Funds Withheld Assets	$	665,682	$	132,731	$	(14,942	)	$	783,471	$	—
Total investments - AFS - Excluding Life Funds Withheld Assets	$	24,415,197	$	1,134,836	$	(205,279	)	$	25,344,754	$	(66,784	)
Fixed maturities - AFS - Life Funds Withheld Assets
U.S. Government and Government-Related/Supported	$	13,163	$	4,450	$	—		$	17,613	$	—
Corporate (2)	2,277,295		468,931		—			2,746,226		—
RMBS – Agency	1,641		489		—			2,130		—
RMBS – Non-Agency	32,880		5,928		—			38,808		—
CMBS	131,830		27,427		—			159,257		—
Other asset-backed securities	209,714		34,426		—			244,140		—
Non-U.S. Sovereign Government, Provincial, Supranational and Government-Related/Supported	1,123,966		385,839		—			1,509,805		—
Total fixed maturities - AFS - Life Funds Withheld Assets	$	3,790,489	$	927,490	$	—		$	4,717,979	$	—
Total investments - AFS	$	28,205,686	$	2,062,326	$	(205,279	)	$	30,062,733	$	(66,784	)
Fixed maturities - Trading - Life Funds Withheld Assets								Amortized Cost		Fair Value
Corporate								$	136,681	$	137,438
Other asset-backed securities								1,966		1,939
Total investments - Trading - Life Funds Withheld Assets								$	138,647	$	139,377

___________

(1) Represents the non-credit component of OTTI losses, adjusted for subsequent sales of securities. It does not include the change in fair value subsequent to the date an impairment was recorded.

(2) Included are certain medium term notes supported primarily by pools of European investment grade credit with varying degrees of leverage. The notes have a fair value of $74.8 million and an amortized cost of $63.8 million. These notes allow the investor to participate in cash flows of the underlying bonds including certain residual values, which could serve to either decrease or increase the ultimate values of these notes.

December 31, 2014 (U.S. dollars in thousands)	Cost or Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value		Non-credit Related OTTI (1)
Fixed maturities - AFS - Excluding Life Funds Withheld Assets
U.S. Government and Government-Related/Supported	$	2,100,851	$	77,889	$	(6,787	)	$	2,171,953	$	—
Corporate (2)	8,462,130		365,805		(49,562		)	8,778,373		(3,309		)
RMBS – Agency	3,625,171		114,188		(10,783		)	3,728,576		—
RMBS – Non-Agency	404,398		41,108		(18,155		)	427,351		(67,918		)
CMBS	1,033,819		23,987		(5,262		)	1,052,544		(2,033		)
CDO	717,544		1,659		(27,169		)	692,034		(1,663		)
Other asset-backed securities (2)	1,028,528		42,810		(6,045		)	1,065,293		(1,797		)
U.S. States and political subdivisions of the States	1,892,566		129,910		(1,204		)	2,021,272		—
Non-U.S. Sovereign Government, Provincial, Supranational and Government-Related/Supported	4,162,425		139,484		(61,836		)	4,240,073		—
Total fixed maturities - AFS - Excluding Life Funds Withheld Assets	$	23,427,432	$	936,840	$	(186,803	)	$	24,177,469	$	(76,720	)
Total short-term investments - Excluding Life Funds Withheld Assets	$	257,221	$	49	$	(543	)	$	256,727	$	—
Total equity securities - Excluding Life Funds Withheld Assets	$	763,833	$	130,689	$	(26,230	)	$	868,292	$	—
Total investments - AFS - Excluding Life Funds Withheld Assets	$	24,448,486	$	1,067,578	$	(213,576	)	$	25,302,488	$	(76,720	)
Fixed maturities - AFS - Life Funds Withheld Assets
U.S. Government and Government-Related/Supported	$	14,866	$	3,858	$	—		$	18,724	$	—
Corporate (2)	2,407,849		410,131		—			2,817,980		—
RMBS – Agency	3,301		481		—			3,782		—
RMBS – Non-Agency	71,075		14,260		—			85,335		—
CMBS	168,886		24,281		—			193,167		—
Other asset-backed securities	238,168		35,373		—			273,541		—
Non-U.S. Sovereign Government, Provincial, Supranational and Government-Related/Supported	1,397,194		391,842		—			1,789,036		—
Total fixed maturities - AFS - Life Funds Withheld Assets	$	4,301,339	$	880,226	$	—		$	5,181,565	$	—
Total investments - AFS	$	28,749,825	$	1,947,804	$	(213,576	)	$	30,484,053	$	(76,720	)
Fixed maturities - Trading - Life Funds Withheld Assets								Amortized Cost		Fair Value
Corporate								$	1,180	$	1,171
Total investments - Trading - Life Funds Withheld Assets								$	1,180	$	1,171

____________

(1) Represents the non-credit component of OTTI losses, adjusted for subsequent sales of securities. It does not include the change in fair value subsequent to the date an impairment was recorded.

(2) Included are certain medium term notes supported primarily by pools of European investment grade credit with varying degrees of leverage. The notes have a fair value of $79.9 million and an amortized cost of $68.4 million. These notes allow the investor to participate in cash flows of the underlying bonds including certain residual values, which could serve to either decrease or increase the ultimate values of these notes.

As of March 31, 2015 and December 31, 2014, approximately 2.8% and 3.0%, respectively, of the Company's fixed income investment portfolio at fair value, excluding Life Funds Withheld Assets, was invested in securities that were below investment grade or not rated. Approximately 23.1% and 24.9% of the gross unrealized losses in the Company's fixed income investment portfolio, excluding Life Funds Withheld Assets, as of March 31, 2015 and December 31, 2014, respectively, related to securities that were below investment grade or not rated.

Contractual Maturities Summary

The contractual maturities of AFS fixed income securities at March 31, 2015 and December 31, 2014 are shown below. Actual maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties.

	March 31, 2015				December 31, 2014
(U.S. dollars in thousands)	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Fixed maturities - AFS - Excluding Life Funds Withheld Assets
Due less than one year	$	1,770,647	$	1,781,224	$	1,972,224	$	1,980,429
Due after 1 through 5 years	9,698,659		9,923,517		8,919,037		9,113,651
Due after 5 through 10 years	4,049,907		4,226,001		4,232,396		4,412,569
Due after 10 years	1,440,069		1,669,149		1,494,315		1,705,022
	$	16,959,282	$	17,599,891	$	16,617,972	$	17,211,671
RMBS – Agency	3,585,638		3,711,334		3,625,171		3,728,576
RMBS – Non-Agency	368,317		380,135		404,398		427,351
CMBS	1,010,518		1,032,720		1,033,819		1,052,544
CDO	520,929		500,974		717,544		692,034
Other asset-backed securities	1,134,928		1,167,367		1,028,528		1,065,293
Total mortgage and asset-backed securities	$	6,620,330	$	6,792,530	$	6,809,460	$	6,965,798
Total fixed maturities - AFS - Excluding Life Funds Withheld Assets	$	23,579,612	$	24,392,421	$	23,427,432	$	24,177,469
Fixed maturities - AFS - Life Funds Withheld Assets
Due less than one year	$	97,637	$	107,530	$	117,048	$	125,326
Due after 1 through 5 years	626,869		676,507		638,526		685,787
Due after 5 through 10 years	798,923		933,986		1,004,698		1,165,348
Due after 10 years	1,890,995		2,555,621		2,059,637		2,649,279
	$	3,414,424	$	4,273,644	$	3,819,909	$	4,625,740
RMBS – Agency	1,641		2,130		3,301		3,782
RMBS – Non-Agency	32,880		38,808		71,075		85,335
CMBS	131,830		159,257		168,886		193,167
Other asset-backed securities	209,714		244,140		238,168		273,541
Total mortgage and asset-backed securities	$	376,065	$	444,335	$	481,430	$	555,825
Total fixed maturities - AFS - Life Funds Withheld Assets	$	3,790,489	$	4,717,979	$	4,301,339	$	5,181,565
Total fixed maturities - AFS	$	27,370,101	$	29,110,400	$	27,728,771	$	29,359,034
Fixed maturities - Trading - Life Funds Withheld Assets
Due less than one year	$	—	$	—	$	—	$	—
Due after 1 through 5 years	64,739		64,733		—		—
Due after 5 through 10 years	5,188		5,131		1,180		1,171
Due after 10 years	66,754		67,574		—		—
	$	136,681	$	137,438	$	1,180	$	1,171
Other asset-backed securities	1,966		1,939		—		—
Total mortgage and asset-backed securities	$	1,966	$	1,939	$	—	$	—
Total fixed maturities - Trading - Life Funds Withheld Assets	$	138,647	$	139,377	$	1,180	$	1,171

OTTI Considerations

Under final authoritative accounting guidance, a debt security for which amortized cost exceeds fair value is deemed to be other-than-temporarily impaired if it meets either of the following conditions: (a) the Company intends to sell, or it is more likely than not that the Company will be required to sell, the security before a recovery in value, or (b) the Company does not expect to recover the entire amortized cost basis of the security. Other than in a situation in which the Company has the intent to sell a debt security or more likely than not will be required to sell a debt security, the amount of the OTTI related to a credit loss on the security is recognized in earnings, and the amount of the OTTI related to other factors (e.g., interest rates, market conditions, etc.) is recorded as a component of OCI. The net amount recognized in earnings (“credit loss impairment”) represents the difference between the amortized cost of the security and the net present value of its projected future cash flows discounted at the effective interest rate implicit in the debt security prior to impairment (“NPV”). The remaining difference between the security's NPV and its fair value is recognized in OCI. Subsequent changes in the fair value of these securities are included in OCI unless a further impairment is deemed to have occurred.

In the scenario where the Company has the intent to sell a security in which its amortized cost exceeds its fair value, or it is more likely than not that it will be required to sell such a security, the entire difference between the security's amortized cost and its fair value is recognized in earnings.

The determination of credit loss impairment is based on detailed analyses of underlying cash flows and other considerations. Such analyses require the use of certain assumptions to develop the estimated performance of underlying collateral. Key assumptions used include, but are not limited to, items such as RMBS default rates based on collateral duration in arrears, severity of losses on default by collateral class, collateral reinvestment rates and expected future general corporate default rates.

Factors considered for all securities on a quarterly basis in determining that a gross unrealized loss is not other-than-temporarily impaired include management's consideration of current and near term liquidity needs and other available sources of funds, an evaluation of the factors and time necessary for recovery and an assessment of whether the Company has the intention to sell or considers it more likely than not that it will be forced to sell a security.

Pledged Assets

Certain of the Company's invested assets are held in trust and pledged in support of insurance and reinsurance liabilities as well as credit facilities. Such pledges are largely required by the Company's operating subsidiaries that are “non-admitted” under U.S. state insurance regulations, in order for the U.S. cedant to receive statutory credit for reinsurance. Also, certain deposit liabilities and annuity contracts require the use of pledged assets. As of March 31, 2015, the Company had $15.4 billion in pledged assets which includes $1.0 billion of cash, cash equivalents and U.S. government securities held in escrow in relation to the Acquisition and the associated Bridge Facility. See "Note 3(a), "Acquisition and Disposals - Catlin Acquisition," for further information on the Bridge Facility. At December 31, 2014, the Company had $15.2 billion in pledged assets.

(b) Gross Unrealized Losses

The following is an analysis of how long the AFS securities as of March 31, 2015 and December 31, 2014 had been in a continual unrealized loss position:

	Less than 12 months					Equal to or greater than 12 months
March 31, 2015 (U.S. dollars in thousands)	Fair Value		Gross Unrealized Losses			Fair Value		Gross Unrealized Losses
Fixed maturities and short-term investments - AFS
U.S. Government and Government-Related/Supported	$	249,646	$	(3,541	)	$	143,891	$	(4,619	)
Corporate	688,725		(40,874		)	190,397		(9,730		)
RMBS – Agency	177,627		(914		)	279,354		(4,858		)
RMBS – Non-Agency	51,876		(1,815		)	188,932		(16,137		)
CMBS	120,862		(393		)	109,324		(3,008		)
CDO	92,517		(294		)	346,372		(21,336		)
Other asset-backed securities	92,193		(6,219		)	37,357		(2,728		)
U.S. States and political subdivisions of the States	55,707		(695		)	15,310		(569		)
Non-U.S. Sovereign Government, Provincial, Supranational and Government-Related/Supported	681,300		(39,085		)	322,974		(33,522		)
Total fixed maturities and short-term investments - AFS	$	2,210,453	$	(93,830	)	$	1,633,911	$	(96,507	)
Total equity securities	$	119,625	$	(14,942	)	$	—	$	—

	Less than 12 months					Equal to or greater than 12 months
December 31, 2014 (U.S. dollars in thousands)	Fair Value		Gross Unrealized Losses			Fair Value		Gross Unrealized Losses
Fixed maturities and short-term investments - AFS
U.S. Government and Government-Related/Supported	$	251,091	$	(1,196	)	$	342,890	$	(5,603	)
Corporate	1,337,470		(33,881		)	424,221		(15,754		)
RMBS – Agency	134,535		(220		)	512,652		(10,563		)
RMBS – Non-Agency	45,378		(1,358		)	202,700		(16,797		)
CMBS	78,356		(385		)	169,065		(4,877		)
CDO	249,803		(2,666		)	414,516		(24,503		)
Other asset-backed securities	143,044		(2,813		)	57,544		(3,232		)
U.S. States and political subdivisions of the States	32,187		(210		)	63,695		(994		)
Non-U.S. Sovereign Government, Provincial, Supranational and Government-Related/Supported	624,346		(19,043		)	558,422		(43,251		)
Total fixed maturities and short-term investments - AFS	$	2,896,210	$	(61,772	)	$	2,745,705	$	(125,574	)
Total equity securities	$	191,193	$	(26,230	)	$	—	$	—

The Company had gross unrealized losses totaling $205.3 million on 1,347 securities out of a total of 7,586 held as of March 31, 2015 in its AFS - Excluding Life Funds Withheld Assets portfolio, which either it considers to be temporarily impaired or with respect to which it reflects non-credit losses on other-than-temporarily impaired assets. Individual security positions comprising this balance have been evaluated by management to determine the severity of these impairments and whether they should be considered other-than-temporary. Management believes it is more likely than not that the issuer will be able to fund sufficient principal and interest payments to support the current amortized cost.

Management, in its assessment of whether securities in a gross unrealized loss position are temporarily impaired, as described above, considers the significance of the impairments. As of March 31, 2015, the AFS - Excluding Life Funds Withheld Assets portfolio included structured credit securities with gross unrealized losses of $9.0 million, which had a fair value of $6.1 million, and a cumulative fair value decline of greater than 50% of amortized cost. All of these securities are mortgage and asset-backed securities.

(c) Net Realized Gains (Losses)

The following represents an analysis of net realized gains (losses) on investments:

Net Realized Gains (Losses) on Investments	Three months ended March 31,
(U.S. dollars in thousands)	2015			2014
Net realized gains (losses) on investments - excluding Life Funds Withheld Assets:
Gross realized gains	$	62,300		$	51,213
Gross realized losses on investments sold	(47,122		)	(28,257		)
OTTI on investments, net of amounts transferred to other comprehensive income	(10,576		)	(3,727		)
	$	4,602		$	19,229
Net realized gains (losses) on investments and net unrealized gains (losses) on investments, Trading - Life Funds Withheld Assets:
Gross realized gains	$	53,128		$	—
Gross realized losses on investments sold	(390		)	—
OTTI on investments, net of amounts transferred to other comprehensive income	(5,209		)	—
Net unrealized gains (losses) on trading securities	$	760		$	—
	$	48,289		$	—
Total net realized gains (losses) on investments	$	52,891		$	19,229

The significant components of the net impairment charges of $10.6 million for investments excluding Life Funds Withheld Assets for the three months ended March 31, 2015 were:

▪ $7.6 million related to certain high yield securities which we no longer intend to hold for a period sufficient to recover their fair value to amortized cost.

• $0.3 million related to certain equities that were in a loss position for more than 11 months.

• $0.1 million for structured securities, principally non-Agency RMBS, where we determined that the likely recovery on these securities was below the carrying value and, accordingly, recorded an impairment of the securities to the discounted value of the cash flows expected to be received on these securities.

• $2.6 million related to foreign exchange losses.

The following table sets forth the amount of credit loss impairments on fixed income securities held by the Company for which a portion of the OTTI loss was recognized in OCI, as of the dates or for the periods indicated and the corresponding changes in such amounts.

Credit Loss Impairments	Three months ended March 31,
(U.S. dollars in thousands)	2015			2014
Opening balance as of beginning of indicated period	$	131,942		$	174,805
Credit loss impairment recognized in the current period on securities not previously impaired	7,560			12
Credit loss impairments previously recognized on securities which matured, paid down, prepaid or were sold during the period	(28,539		)	(3,348		)
Additional credit loss impairments recognized in the current period on securities previously impaired	141			2,261
Accretion of credit loss impairments previously recognized due to an increase in cash flows expected to be collected	(2,646		)	(2,347		)
Balance as of March 31,	$	108,458		$	171,383

During the three months ended March 31, 2015 and 2014, the $28.5 million and $3.3 million, respectively, credit loss impairments previously recognized on securities that matured, or were paid down, prepaid or sold, included $27.3 million and $2.7 million, respectively, of non-Agency RMBS.

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Derivative Instruments

3 Months Ended

Mar. 31, 2015

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivative Instruments

Derivative Instruments

The Company enters into derivative instruments for both risk management and investment purposes. The Company is exposed to potential loss from various market risks, and manages its market risks based on guidelines established by management and the Risk and Finance Committee of the Company's Board of Directors. The Company recognizes all derivatives as either assets or liabilities on the balance sheets and measures those instruments at fair value, with the changes in fair value of derivatives shown in the consolidated statement of income as “Net realized and unrealized gains (losses) on derivative instruments” unless the derivatives are designated as hedging instruments. The accounting for derivatives that are designated as hedging instruments is described in Item 8, Note 2(h), “Significant Accounting Policies - Derivative Instruments,” to the Consolidated Financial Statements included in the Company's Annual Report on Form 10-K for the year ended December 31, 2014.

The following table summarizes information on the location and gross amounts of derivative fair values contained in the consolidated balance sheets as of March 31, 2015 and December 31, 2014:

	March 31, 2015								December 31, 2014
(U.S. dollars in thousands)	Asset Derivative Notional Amount		Asset Derivative Fair Value (1)		Liability Derivative Notional Amount		Liability Derivative Fair Value (1)		Asset Derivative Notional Amount		Asset Derivative Fair Value (1)		Liability Derivative Notional Amount		Liability Derivative Fair Value (1)
Derivatives designated as hedging instruments:
Foreign exchange contracts	$	204,811	$	38,376	$	204,811	$	26,505	$	2,300,609	$	121,862	$	302,211	$	2,936
Total derivatives designated as hedging instruments	$	204,811	$	38,376	$	204,811	$	26,505	$	2,300,609	$	121,862	$	302,211	$	2,936
Derivatives not designated as hedging instruments:
Investment Related Derivatives:
Interest rate exposure	$	264,527	$	224	$	13,033	$	65	$	394,597	$	206	$	20,782	$	51
Foreign exchange exposure	23,400		498		190,368		7,709		7,385		403		288,376		4,724
Credit exposure	2,408		205		14,270		9,836		2,408		165		14,270		9,836
Financial market exposure	33,362		513		33,136		63		46,145		360		33,670		34
Other Non-Investment Derivatives:
Foreign exchange contracts	2,304,633		205,083		2,366,968		65,294		—		—		—		—
Credit exposure	31,060		218		—		—		31,060		60		—		—
Guaranteed minimum income benefit contract	45,658		12,763		45,658		12,763		46,249		13,603		46,249		13,603
Modified coinsurance funds withheld contracts (2)	65,530		—		5,045,540		—		64,947		—		5,401,278		—
Total derivatives not designated as hedging instruments	$	2,770,578	$	219,504	$	7,708,973	$	95,730	$	592,791	$	14,797	$	5,804,625	$	28,248

____________

(1) Derivative instruments in an asset or liability position are included within Other assets or Other liabilities, respectively, in the balance sheets on a net basis where the Company has both a legal right of offset and the intention to settle the contracts on a net basis.

(2) The fair value movements in derivative assets and liabilities relating to modified coinsurance funds withheld contracts are included within the associated asset or liability at each period end on the face of the balance sheets. Notional amounts associated with reinsurance agreements under which the Company assumes reinsurance risk are recorded as asset derivative notional amounts. Notional amounts associated with the Life Retro Arrangements under which the Company cedes reinsurance risk are recorded as liability derivative notional amounts. Included in the liability derivative notional amount as of March 31, 2015 is the cumulative net realized and unrealized loss on life retrocession embedded derivative of $654.6 million.

The following table summarizes information on the gross and net amounts of derivative fair values and associated collateral received related to derivative assets, or paid related to derivative liabilities, reported in other assets and or other liabilities within our consolidated balance sheets as of March 31, 2015 and December 31, 2014:

							Gross Amounts Not Offset in the Balance Sheets
March 31, 2015 (U.S. dollars in thousands)	Gross Amounts Recognized in the Balance Sheets		Gross Amounts Offset in the Balance Sheets		Net Amounts in the Balance Sheets		Financial Instruments		Cash Collateral		Net Amounts
Derivative Assets	$	257,880	$	587	$	257,293	$	—	$	183,675	$	73,618
Derivative Liabilities	$	122,235	$	587	$	121,648	$	—	$	—	$	121,648
December 31, 2014 (U.S. dollars in thousands)
Derivative Assets	$	136,659	$	696	$	135,963	$	—	$	78,580	$	57,383
Derivative Liabilities	$	31,184	$	696	$	30,488	$	—	$	—	$	30,488

Derivative instruments in an asset or liability position are included within Other assets or Other liabilities, respectively, in the balance sheets on a net basis where the Company has both a legal right of offset and the intention to settle the contracts on a net basis. The Company often enters into different types of derivative contracts with a single counterparty and these contracts are covered under netting agreements. As of March 31, 2015 and December 31, 2014, the Company held cash collateral related to foreign currency derivative positions and certain other derivative positions of $183.7 million and $78.6 million, respectively. The assets and liabilities related to the net collateral paid or held were recorded as Other assets and Other liabilities within the balance sheets as the collateral and derivative positions are not intended to be settled on a net basis.

(a) Derivative Instruments Designated as Fair Value Hedges

The Company designates certain of its derivative instruments as fair value hedges or cash flow hedges and formally and contemporaneously documents all relationships between the hedging instruments and hedged items and links the hedging derivative to specific assets and liabilities. The Company assesses the effectiveness of the hedge both at inception and on an on-going basis, and determines whether the hedge is highly effective in offsetting changes in fair value or cash flows of the linked hedged item.

The Company may use foreign exchange contracts to hedge the fair value of certain fixed income securities as well as to hedge certain net investments in foreign operations. In connection with the Acquisition and the FX Forward (defined below), certain foreign exchange contracts utilized to hedge the fair value of certain net investments in foreign operations were de-designated as hedging instruments during the quarter.

The following table provides the total impact on earnings relating to derivative instruments formally designated as fair value hedges along with the impacts of the related hedged items for the three months ended March 31, 2015 and 2014:

				Hedged Items - Amount of Gain/(Loss) Recognized in Income Attributable to Risk
Derivatives Designated as Fair Value Hedges: Three Months Ended March 31, 2015 (U.S. dollars in thousands)	Gain/(Loss) Recognized in Income on Derivative				Fixed Maturity Investments		Ineffective Portion of Hedging Relationship - Gain/(Loss)
Interest rate exposure	$	—
Foreign exchange exposure	—
Total	$	—			$	—	$	—
Three Months Ended March 31, 2014
(U.S. dollars in thousands)
Interest rate exposure	$	—
Foreign exchange exposure	(6,531		)
Total	$	(6,531	)		$	8,325	$	1,794

The gains (losses) recorded on both the derivative instruments and specific items designated as being hedged as part of the fair value hedging relationships outlined above along with any associated ineffectiveness in the relationships are recorded through Net realized and unrealized gains (losses) on derivative instruments in the income statement.

Settlement of Fair Value Hedges

A summary of the fair value hedges that have been settled and their impact on results during the indicated periods as well as the remaining balance of fair value hedges and average years remaining to maturity as of March 31, 2015 and 2014 are shown below:

Settlement of Fair Value Hedges - Summary	Fair Value Hedges - Deposit Liabilities March 31,
(U.S. dollars in thousands, except years)	2015		2014
Cumulative reduction to interest expense	$	97,705	$	41,270
Remaining balance	$	135,490	$	191,925
Weighted average years remaining to maturity	22.7		22.2

During the second quarter of 2014, the Company negotiated the termination of one of its larger structured indemnity contracts. This contract had previously been designated as a fair value hedge that was settled. The remaining fair value adjustment of $47.0 million that was being amortized as a reduction of interest expense over the remaining term of the contract was recorded as an adjustment to interest expense at the termination date. As a result of the termination, a net decrease of $28.7 million was recorded to interest expense reflecting the realization of the remaining balance of the fair value hedge adjustment, partially offset by an accretion rate adjustment due to changes in cash flows.

(b) Derivative Instruments Designated as Hedges of the Net Investment in a Foreign Operation

The Company utilizes foreign exchange contracts to hedge the fair value of certain net investments in foreign operations. During the three months ended March 31, 2015 and 2014, the Company entered into foreign exchange contracts that were formally designated as hedges of investments in foreign subsidiaries, the majority of which have functional currencies of either U.K. sterling or the Euro. There was no ineffectiveness in these transactions.

The following table provides the weighted average U.S. dollar equivalent of foreign denominated net assets that were hedged and the resulting derivative gain (loss) that was recorded in the Foreign currency translation adjustment, net of tax, account within AOCI for the three months ended March 31, 2015 and 2014:

Derivative Instruments Designated as Hedges of the Net Investment in a Foreign Operation - Summary	Three months ended March 31,
(U.S. dollars in thousands)	2015		2014
Weighted average of U.S. dollar equivalent of foreign denominated net assets	$	628,941	$	2,687,455
Derivative gains (losses) (1)	$	66,770	$	960

____________

(1) Derivative gains (losses) from derivative instruments designated as hedges of the net investment in a foreign operation are recorded in the cumulative translation adjustment account within AOCI for each period.    

(c) Derivative Instruments Not Formally Designated As Hedging Instruments

The following table provides the total impact on earnings relating to derivative instruments not formally designated as hedging instruments under authoritative accounting guidance and from the ineffective portion of fair value hedges. The impacts are all recorded through Net realized and unrealized gains (losses) on derivatives in the income statement for the three months ended March 31, 2015 and 2014:

Net Realized and Unrealized Gains (Losses) on Derivative Instruments	Three months ended March 31,
(U.S. dollars in thousands)	2015			2014
Investment Related Derivatives:
Interest rate exposure	$	9,637		$	348
Foreign exchange exposure	(1,362		)	3,288
Credit exposure	82			(404		)
Financial market exposure	3,041			871
Financial Operations Derivatives:
Credit exposure	—			(4,800		)
Other Non-Investment Derivatives:
Foreign exchange contracts	2,059			—
Credit exposure	1,346			—
Guaranteed minimum income benefit contract	—			1,624
Modified coinsurance funds withheld contract	1,718			(911		)
Total gain (loss) recognized in income from derivatives not designated as hedging instruments	$	16,521		$	16
Amount of gain (loss) recognized in income from ineffective portion of fair value hedges	—			1,794
Net realized and unrealized gains (losses) on derivative instruments	$	16,521		$	1,810
Net realized and unrealized gains (losses) on life retrocession embedded derivative and derivative instruments - Life Funds Withheld Assets	$	(229,367	)	$	—

The Company’s objectives in using these derivatives are explained below.

(d)(i) Investment Related Derivatives

The Company, either directly or through its investment managers, may use derivative instruments within its investment portfolio, including interest rate swaps, inflation swaps, commodity contracts, credit derivatives (single name and index credit default swaps), options, forward contracts and financial futures (foreign exchange, bond and stock index futures), primarily as a means of economically hedging exposures to interest rate, credit spread, equity price changes and foreign currency risk or, in limited instances, for investment purposes. When using cleared (exchange traded) derivatives, the Company is exposed to the credit risk of the applicable clearing house and of the Company's future commissions merchant. When using uncleared (over-the-counter) derivatives, the Company is exposed to credit risk in the event of non-performance by the counterparties under any derivative contracts, although the Company generally seeks to use credit support arrangements with counterparties to help manage this risk.

Investment Related Derivatives – Interest Rate Exposure

The Company utilizes risk management and overlay strategies that incorporate the use of derivative financial instruments, primarily to manage its fixed income portfolio duration and net economic exposure to interest rate risks. The Company may also use interest rate swaps to convert certain liabilities from a fixed rate to a variable rate of interest or use them to convert a variable rate of interest from one basis to another.

Investment Related Derivatives – Foreign Exchange Exposure

The Company has exposure to foreign currency exchange rate fluctuations through its operations and in its investment portfolio. The Company uses foreign exchange contracts to manage its exposure to the effects of fluctuating foreign currencies on the value of certain of its foreign currency fixed maturities. These contracts are not designated as specific hedges for financial reporting purposes and, therefore, realized and unrealized gains and losses on these contracts are recorded in income in the period in which they occur. These contracts generally have maturities of twelve months or less.

In addition, certain of the Company's investment managers may, subject to investment guidelines, enter into forward contracts.

Investment Related Derivatives – Credit Exposure

Credit derivatives may be purchased within the Company's investment portfolio in the form of single name, basket or index credit default swaps, which are used to mitigate credit exposure through a reduction in credit spread duration (i.e., macro credit strategies rather than single-name credit hedging) or exposure to securities of selected issuers, including issuers that are not held in the underlying fixed income portfolio.

Investment Related Derivatives – Financial Market Exposure

Stock index futures may be purchased within the Company's investment portfolio in order to create synthetic equity exposure and to add value to the portfolio with overlay strategies where market inefficiencies are believed to exist. From time to time, the Company may enter into other financial market exposure derivative contracts on various indices including, but not limited to, inflation and commodity contracts.

(d)(ii) Financial Operations Derivatives – Credit Exposure

During the fourth quarter of 2014, the remaining financial operations credit derivative exposure, which was written as part of the Company's previous financial lines business and is outside of the Company's investment portfolio, was terminated. The Company has no continuing financial operations derivative credit exposures.

(d)(iii) Other Non-Investment Derivatives

Foreign Exchange Contracts

On January 9, 2015, the Company entered into deal contingent deliverable foreign exchange forwards ("FX Forwards") with Morgan Stanley Capital Services LLC and Goldman Sachs International. The purpose of the FX Forwards was to mitigate risk of foreign currency exposure related to the Acquisition. Following the close of the Acquisition, the FX Forwards were settled.

In connection with the Acquisition and the FX Forward, during the quarter, certain foreign exchange contracts utilized to hedge the fair value of certain net investments in foreign operations were de-designated as hedging instruments.

Credit Exposure

During the year ended December 31, 2014, the Company entered into a non-investment related credit derivative relating to a number of reference pool mortgage tranches associated with actual mortgage loans that were securitized into agency mortgage-backed securities and sold as Structured Agency Credit Risk Notes. As of March 31, 2015, there was no reported event of default on this obligation. As of March 31, 2015 and December 31, 2014, the notional amount outstanding related to the derivative was $31.1 million and the Company had recorded a derivative asset of $0.2 million and $0.1 million, respectively. During the three months ended March 31, 2015, the Company recorded Net realized and unrealized gains of $0.1 million relating to this credit derivative. The credit derivative is recorded at fair value based upon models developed by the Company. Significant unobservable inputs considered in the valuation include the impact of changes in interest rates, future default, delinquency and prepayment rates, credit spreads, changes in credit quality, and other market factors.

Guaranteed Minimum Income Benefit Contract

The Company also has derivatives embedded in certain reinsurance contracts. For a certain life reinsurance contract, the Company pays the ceding company a fixed amount equal to the estimated present value of the excess of the guaranteed benefit over the account balance upon the policyholder's election to take the income benefit. The fair value of this derivative is determined based on the present value of expected cash flows.

Modified Coinsurance Funds Withheld Contract

The Company has modified coinsurance and funds withheld reinsurance agreements that provide for a return to be paid to the Company based on a portfolio of fixed income securities. As such, the agreements contain an embedded derivative. The embedded derivative is bifurcated from the funds withheld balance and recorded at fair value with changes in fair value recognized in earnings through Net realized and unrealized gains (losses) on derivative instruments.

Modified Coinsurance Funds Withheld Reinsurance Agreements - Life Retrocession Embedded Derivative

In addition, the Company has entered into Life Retro Arrangements, as described in Note 3(c), "Acquisition and Disposals - Sale of Life Reinsurance Subsidiary." The embedded derivative related to the Life Retro Arrangements is recorded at fair value with changes in fair value recognized in earnings through Net realized and unrealized gains (losses) on life retrocession embedded derivative and derivative instruments - Life Funds Withheld Assets.

The value of the life retrocession embedded derivative includes the interest income, realized and unrealized gains and losses on Life Funds Withheld Assets and certain related expenses subsequent to May 30, 2014 as follows:

Components of Life Retrocession Embedded Derivative and Derivative Instruments - Life Funds Withheld Assets:	Three months ended March 31,
(U.S. dollars in thousands)	2015			2014
Interest income - Life Funds Withheld Assets	$	(50,996	)	—
Realized and unrealized gains (losses) - Life Funds Withheld Assets	(152,830		)	—
Other	96			—
Net realized and unrealized gains (losses) on life retrocession embedded derivative	$	(203,730	)	$	—
Net adjustments related to future policy benefit reserves, net of tax	$	(11,954	)	$	—
Net realized and unrealized gains (losses) on derivative instruments - Life Funds Withheld Assets	$	(13,683	)	$	—
Net realized and unrealized gains (losses) on life retrocession embedded derivative and derivative instruments - Life Funds Withheld Assets	$	(229,367	)	$	—

(e) Contingent Credit Features

Certain derivative agreements entered into by the Company or its subsidiaries contain credit rating downgrade provisions that permit early termination of the agreements by the counterparty if collateral is not posted following failure to maintain certain credit ratings from one or more of the principal credit rating agencies. If the Company were required to early terminate such agreements due to a credit rating downgrade, it could potentially be in a net liability position at the time of settlement of such agreements. The aggregate fair value of all derivative agreements containing such rating downgrade provisions that were in a liability position and any collateral posted under these agreements as of March 31, 2015 and December 31, 2014 were as follows:

Contingent Credit Features - Summary: (U.S. dollars in thousands)	March 31, 2015		December 31, 2014
Aggregate fair value of derivative agreements with downgrade provisions in a net liability position	$	5,598	$	5,770
Collateral posted to counterparty	$	—	$	—

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Share Capital

3 Months Ended

Mar. 31, 2015

Stockholders' Equity Note [Abstract]

Share Capital

Share Capital

(a) Authorized and Issued

Buybacks of Ordinary Shares

On February 21, 2014, XL-Ireland announced that its Board of Directors approved an increase to the Share Buyback Program, authorizing the purchase of up to $1.0 billion of our ordinary shares, which included the amounts that remained under the previous Share Buyback Program. The Company suspended active share buybacks during the quarter ended March 31, 2015 through the close of the Acquisition; however, with the close of the Acquisition, the Company continues to see share buybacks as a valuable capital management tool. As of March 31, 2015, $267.6 million remained available for purchase under the Share Buyback Program.

(b) Stock Plans

The Company's performance incentive programs provide for grants of stock options, restricted stock, restricted stock units, performance units and stock appreciation rights. Share-based compensation granted by the Company generally contains a vesting period of three or four years, and certain awards also contain performance conditions. The Company records compensation expense related to each award over its vesting period, incorporating the best estimate of the expected outcome of performance conditions where applicable. Compensation expense is generally recorded on a straight line basis over the vesting period of an award. See Item 8, Note 20, “Share Capital,” to the Consolidated Financial Statements included in the Company's Annual Report on Form 10-K for the year ended December 31, 2014 for further information on the Company's performance incentive programs and associated accounting.

During the three months ended March 31, 2015, the Company granted approximately 1.3 million stock options with a weighted-average grant date fair value of $6.57 per option. The fair value of the options issued was estimated on the date of grant using the Black-Scholes option pricing model using the following weighted average assumptions:

Dividend yield	2.00	%
Risk free interest rate	1.70	%
Volatility	21.9	%
Expected lives	6.0 years

During the three months ended March 31, 2015, the Company granted approximately 1.5 million restricted stock units to certain employees of the Company and its subsidiaries with an aggregate grant date fair value of approximately $55.1 million. Each restricted stock unit represents the Company's obligation to deliver to the holder one ordinary share, and grants vest in three equal installments upon the first, second and third anniversaries of the date of grant. Restricted stock units are granted at the closing market price on the day of grant and entitle the holder to receive dividends declared and paid in the form of additional ordinary shares contingent upon vesting.

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Notes Payable and Debt and Financing Arrangements (Details) (USD $)	3 Months Ended		0 Months Ended
	Mar. 31, 2015 Credit_Facilities		Mar. 30, 2015	Dec. 31, 2014
Line of Credit Facility [Line Items]
Percentage Ownership Of XLIT Ltd.	100.00%
Number Of Available Letter Of Credit	8
Revolving credit facility
Line of Credit Facility [Line Items]
Available letter of credit facilities - commitments	1,000,000,000	[1],[2]		$ 1,000,000,000	[1],[2]
Letter of credit facilities
Line of Credit Facility [Line Items]
Available letter of credit facilities - commitments	3,575,000,000	[1],[3]		3,575,000,000	[1],[3]
Available letter of credit facilities - in use	1,743,230,000	[1]		1,790,561,000	[1]
Collateralized by certain assets of the Company’s investment portfolio	65.70%	[1]		66.20%	[1]
November 2013 unsecured credit agreement
Line of Credit Facility [Line Items]
Line Of Credit Facility Optional Increased Capacity	2,000,000,000
Two Thousand Thirteen Citi Agreements [Member] | Revolving credit facility
Line of Credit Facility [Line Items]
Available letter of credit facilities - commitments	575,000,000
Two Thousand Thirteen Citi Agreements [Member] | Letter of credit facilities
Line of Credit Facility [Line Items]
Available letter of credit facilities - in use	575,000,000
Syndicated Credit Agreements [Member]
Line of Credit Facility [Line Items]
Line Of Credit Facility Optional Increased Capacity	500,000,000
XL Cayman | 4.45% subordinated notes due 2025 | Subordinated notes
Line of Credit Facility [Line Items]
Face value of issued notes			500,000,000
Debt interest rate (percent)			4.45%
Debt issue price, as a percentage of face value			99.633%
Net proceeds on issuance of debt			492,200,000
Debt issuance cost			5,900,000
XL Cayman | 5.5% subordinated notes due 2045 | Subordinated notes
Line of Credit Facility [Line Items]
Face value of issued notes			500,000,000
Debt interest rate (percent)			5.50%
Debt issue price, as a percentage of face value			99.115%
Net proceeds on issuance of debt			488,400,000
Debt issuance cost			$ 7,200,000

[1] As of March 31, 2015 and December 31, 2014, there were eight available letter of credit facilities.

[2] As of March 31, 2015 and December 31, 2014, the $1 billion of revolving credit available under the November 2013 unsecured credit agreements, which currently provide an aggregate amount for issuance of letters of credit and revolving credit loans up to $2 billion, was unutilized. The credit agreements entered into with Citicorp USA, Inc. in May through November 2013 (the "Citi Agreements") provide for issuance of letters of credit and revolving credit loans up to an aggregate amount of $575.0 million. As of March 31, 2015, $575.0 million of letters of credit were issued under these agreements and therefore such amount is not included in this line.

[3] ovember 2013 credit agreements, which currently provide an aggregate amount of outstanding letters of credit and revolving credit loans of up to $2 billion. The Company has the option to increase the size of the facilities under these agreements by an additional $500 million across such facilities. The Company also has the option to increase the maximum amount of the letters of credit and revolving credit loans available under the 2013 credit agreements with Citicorp USA, Inc. with the lender's and issuing lender's consent.

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Variable Interest Entities (Details) (Variable Interest Entity, Primary Beneficiary [Member], USD $) In Millions, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Variable Interest Entity [Line Items]
Noncontrolling Interest in Variable Interest Entity	$ 58.8	$ 58.4
Variable Interest Entity, Consolidated, Carrying Amount, Assets	141.3	139.9
New Ocean Capital Management Ltd [Member]
Variable Interest Entity [Line Items]
Noncontrolling Interest in Variable Interest Entity	$ 0.2	$ 0.2

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Share Capital - Narrative (Details) (USD $) Share data in Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Feb. 21, 2014
2014 Repurchase Authorization
Shareholders Equity Disclosure [Line Items]
Stock Repurchase Program, Authorized Amount		$ 1,000,000,000
Stock Repurchase Program, Remaining Authorized Repurchase Amount	267,600,000
Stock options
Shareholders Equity Disclosure [Line Items]
Weighted Average Grant Date Fair Value Per Stock Option	$ 6.57
Number of Stock Options Granted During the Period	1.3
Restricted stock units
Shareholders Equity Disclosure [Line Items]
Number of Awards Granted During the Period	1.5
Aggregate Grant Date Fair Value of Award	$ 55,100,000
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	3 years
Minimum [Member]
Shareholders Equity Disclosure [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	3 years
Maximum [Member]
Shareholders Equity Disclosure [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	4 years

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Acquisition and Disposals - Acquisition Consideration (Details) (Subsequent Event, Catlin Group Limited) In Thousands, except Share data, unless otherwise specified	0 Months Ended
	May 01, 2015 USD ($)	May 01, 2015 GBP (£)
Business Acquisition [Line Items]
Shares outstanding (including dilutive effects of warrants) that will receive cash and share consideration	384,118,000	384,118,000
Exchange ratio per the merger agreement	0.13	0.13
Share issuance to Catlin shareholders	49,935,000	49,935,000
Share Price	$ 37.08
Share issuance consideration	$ 1,851,601
Cash price component, per share in GBP		£ 3.88
Foreign exchange rate: GBP/USD	1.5349	1.5349
Cash consideration	2,287,579	1,490,377
Total acquisition consideration	$ 4,139,180

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Investments - Narrative (Details) (USD $)	3 Months Ended			0 Months Ended
	Mar. 31, 2015 positions		Mar. 31, 2014	May 01, 2014	Dec. 31, 2014
Schedule of Available-for-sale Securities [Line Items]
Change in adjustments related to future policy benefit reserves, net of tax	$ (60,356,000)		$ 34,004,000
Fixed maturities, at fair value	29,110,400,000				29,359,034,000
Amortized cost of fixed maturities	27,370,101,000				27,728,771,000
Percentage of Fixed Income Investment portfolio invested in below investment grade or not rated	2.80%				3.00%
Percentage of Gross Unrealized losses in Fixed income securities portfolio related to securities below investment grade or not rated	23.10%				24.90%
Available for sale securities, Gross unrealized losses	205,279,000				213,576,000
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	1,347
Available-for-sale Securities, Qualitative Disclosure, Number of Positions	7,586
Pledged Assets Separately Reported, Other Debt Securities Available-for-sale or Held-for-investment	15,400,000,000				15,200,000,000
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Reductions, Securities Sold	28,539,000		3,348,000
Corporate
Schedule of Available-for-sale Securities [Line Items]
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net, Available-for-sale Securities	7,600,000
Medium term notes
Schedule of Available-for-sale Securities [Line Items]
Fixed maturities, at fair value	74,800,000				79,900,000
Amortized cost of fixed maturities	63,800,000				68,400,000
Structured Credit Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Marketable Securities	6,100,000
Marketable Securities Unrealized Loss Other Than Temporary Impairments Amount	9,000,000
Impaired Investment Cumulative Fair Value Decline Percentage Amortized Cost	50.00%
RMBS - Non-Agency
Schedule of Available-for-sale Securities [Line Items]
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net, Available-for-sale Securities	100,000
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Reductions, Securities Sold	27,300,000		2,700,000
Foreign Currency Adjustments [Member]
Schedule of Available-for-sale Securities [Line Items]
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net, Available-for-sale Securities	2,600,000
Equities
Schedule of Available-for-sale Securities [Line Items]
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net, Available-for-sale Securities	300,000
XL Re Life (SAC) Ltd
Schedule of Available-for-sale Securities [Line Items]
Held To Maturity Securities Transferred Security Carrying Value				2,800,000,000
Unrealized gains on held to maturity investment portfolio at time of transfer to available for sale, net of tax				424,900,000
Fixed maturites held to maturity, gross unrealized losses				0
Unrealized gains (losses) on investments
Schedule of Available-for-sale Securities [Line Items]
Change in adjustments related to future policy benefit reserves, net of tax	(60,400,000)
Unrealized gains (losses) on investments | XL Re Life (SAC) Ltd
Schedule of Available-for-sale Securities [Line Items]
Change in adjustments related to future policy benefit reserves, net of tax				440,500,000
Excluding Life Funds Withheld Assets
Schedule of Available-for-sale Securities [Line Items]
Fixed maturities, at fair value	24,392,421,000				24,177,469,000
Amortized cost of fixed maturities	23,579,612,000				23,427,432,000
Available for sale securities, Gross unrealized losses	205,279,000				213,576,000
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net, Available-for-sale Securities	10,576,000		3,727,000
Excluding Life Funds Withheld Assets | Corporate
Schedule of Available-for-sale Securities [Line Items]
Fixed maturities, at fair value	8,154,638,000	[1]			8,778,373,000	[2]
Amortized cost of fixed maturities	7,806,607,000	[1]			8,462,130,000	[2]
Excluding Life Funds Withheld Assets | RMBS - Non-Agency
Schedule of Available-for-sale Securities [Line Items]
Fixed maturities, at fair value	380,135,000				427,351,000
Amortized cost of fixed maturities	368,317,000				404,398,000
Catlin Group Limited
Schedule of Available-for-sale Securities [Line Items]
Pledged Assets Separately Reported, Other Debt Securities Available-for-sale or Held-for-investment	$ 1,000,000,000

[1] Included are certain medium term notes supported primarily by pools of European investment grade credit with varying degrees of leverage. The notes have a fair value of $74.8 million and an amortized cost of $63.8 million. These notes allow the investor to participate in cash flows of the underlying bonds including certain residual values, which could serve to either decrease or increase the ultimate values of these notes.

[2] Included are certain medium term notes supported primarily by pools of European investment grade credit with varying degrees of leverage. The notes have a fair value of $79.9 million and an amortized cost of $68.4 million. These notes allow the investor to participate in cash flows of the underlying bonds including certain residual values, which could serve to either decrease or increase the ultimate values of these notes.

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Commitments and Contingencies

3 Months Ended

Mar. 31, 2015

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Commitments and Contingencies

(a) Financial Guarantee Exposures

The Company's outstanding financial guarantee contracts as of March 31, 2015 provide credit support for a variety of collateral types with the exposures comprised of an aggregate amount of $80.8 million notional financial guarantee on two notes backed by zero coupon long dated bonds and bank perpetual securities, including some issued by European financial institutions. As of March 31, 2015 and December 31, 2014, the total gross claim liability recorded was nil and the contracts had a weighted average contractual term to maturity of 25.0 years and 25.2 years, respectively.

Surveillance procedures to track and monitor credit deteriorations in the insured financial obligations are performed by the primary obligors for each transaction on the Company's behalf. Information regarding the performance status and updated exposure values is provided to the Company on a quarterly basis and evaluated by management in recording claims reserves. As of March 31, 2015, there were no reported events of default on these obligations.

(b) Litigation

The Company and its subsidiaries are subject to litigation and arbitration in the normal course of business. These lawsuits and arbitrations principally involve claims on policies of insurance and contracts of reinsurance and are typical for the Company and for the property and casualty insurance and reinsurance industry in general. Such claims proceedings are considered in connection with the Company's loss and loss expense reserves. Reserves in varying amounts may or may not be established in respect of particular claims proceedings based on many factors, including the legal merits thereof. In addition to litigation relating to insurance and reinsurance claims, the Company and its subsidiaries are subject to lawsuits and regulatory actions in the normal course of business that do not arise from or directly relate to claims on insurance or reinsurance policies. This category of business litigation typically involves, among other things, allegations of underwriting errors or misconduct, employment claims, regulatory activity, shareholder disputes or disputes arising from business ventures. The status of these legal actions is actively monitored by management.

Legal actions are subject to inherent uncertainties, and future events could change management's assessment of the probability or estimated amount of potential losses from pending or threatened legal actions. Based on available information, it is the opinion of management that the ultimate resolution of pending or threatened legal actions other than claims proceedings, both individually and in the aggregate, will not result in losses having a material adverse effect on the Company's financial position or liquidity as of March 31, 2015.

If management believes that, based on available information, it is at least reasonably possible that a material loss (or additional material loss in excess of any accrual) will be incurred in connection with any legal actions, the Company discloses an estimate of the possible loss or range of loss, either individually or in the aggregate, as appropriate, if such an estimate can be made, or discloses that an estimate cannot be made. Based on the Company's assessment as of March 31, 2015, no such disclosures were considered necessary.

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Segment Information (Tables)

3 Months Ended

Mar. 31, 2015

Segment Reporting [Abstract]

Schedule of segment reporting, by segment

The following tables summarize the segment results for the three months ended March 31, 2015 and 2014:

Three Months Ended March 31, 2015 (U.S. dollars in thousands, except ratios)	Insurance			Reinsurance			Total P&C			Corporate and Other (1)			Total
Gross premiums written	$	1,654,747		$	825,662		$	2,480,409		$	74,951		$	2,555,360
Net premiums written	1,089,108			747,635			1,836,743			14,506			1,851,249
Net premiums earned	962,306			357,188			1,319,494			14,506			1,334,000
Net losses and loss expenses	616,947			152,880			769,827			19,387			789,214
Acquisition costs	80,387			71,492			151,879			1,817			153,696
Operating expenses (2)	208,457			42,495			250,952			931			251,883
Underwriting profit (loss)	$	56,515		$	90,321		$	146,836		$	(7,629	)	$	139,207
Net investment income - excluding Life Funds Withheld Assets (3)							132,808			10,210			143,018
Net investment income - Life Funds Withheld Assets										50,419			50,419
Net results from structured products (4)	2,905			2,120			5,025			—			5,025
Net fee income and other (5)	(7,465		)	825			(6,640		)	132			(6,508		)
Net realized gains (losses) on investments - excluding Life Funds Withheld Assets							5,807			(1,205		)	4,602
Net realized gains (losses) on investments and net unrealized gains (losses) on investments, Trading - Life Funds Withheld Assets							—			48,289			48,289
Net realized and unrealized gains (losses) on derivative instruments							—			16,521			16,521
Net realized and unrealized gains (losses) on life retrocession embedded derivative and derivative instruments - Life Funds Withheld Assets							—			(229,367		)	(229,367		)
Net income (loss) from investment fund affiliates and operating affiliates (6)							—			57,997			57,997
Exchange (gains) losses							—			27,390			27,390
Corporate operating expenses							—			62,443			62,443
Contribution from P&C and Corporate and Other							283,836			(144,466		)	139,370
Interest expense (7)										41,481			41,481
Non-controlling interests										37,390			37,390
Income tax expense										24,218			24,218
Net income (loss) attributable to ordinary shareholders													$	36,281
Ratios – P&C operations: (8)
Loss and loss expense ratio	64.1		%	42.8		%	58.3		%
Underwriting expense ratio	30.0		%	31.9		%	30.6		%
Combined ratio	94.1		%	74.7		%	88.9		%

____________

(1) Corporate and Other includes other items of our revenue and expenditures that are not evaluated at the segment level for reporting purposes, as well as the Company's Run-Off Life Operations.

(2) Operating expenses of the segments exclude Corporate operating expenses, shown separately.

(3) Net investment income - excluding Life Funds Withheld Assets does not include net investment income related to the net results from structured products.

(4) The net results from P&C structured products include net investment income and interest expense of $15.1 million and $10.0 million, respectively.

(5) Net fee income and other includes operating expenses from the Company's loss prevention consulting services business.

(6) The Company generally records the income related to the alternative funds and to the private investment and operating fund affiliates on a one-month and three-month lag, respectively.

(7) Interest expense excludes interest expense related to deposit liabilities recorded in the Insurance and Reinsurance segments.

(8) Ratios are based on net premiums earned from P&C operations.

Three Months Ended March 31, 2014 (U.S. dollars in thousands, except ratios)	Insurance			Reinsurance			Total P&C			Corporate and Other (1)			Total
Gross premiums written	$	1,570,926		$	857,713		$	2,428,639		$	84,297		$	2,512,936
Net premiums written	1,127,367			792,173			1,919,540			76,311			1,995,851
Net premiums earned	992,440			420,088			1,412,528			76,311			1,488,839
Net losses and loss expenses	639,193			192,312			831,505			113,587			945,092
Acquisition costs	105,000			87,235			192,235			7,179			199,414
Operating expenses (2)	203,053			40,861			243,914			3,188			247,102
Underwriting profit (loss)	$	45,194		$	99,680		$	144,874		$	(47,643	)	$	97,231
Net investment income - excluding Life Funds Withheld Assets (3)							143,527			70,892			214,419
Net results from structured products (4)	4,890			3,063			7,953			—			7,953
Net fee income and other (5)	(1,212		)	673			(539		)	45			(494		)
Net realized gains (losses) on investments - excluding Life Funds Withheld Assets							17,666			1,563			19,229
Net realized and unrealized gains (losses) on derivative instruments							—			1,810			1,810
Net income (loss) from investment fund affiliates and operating affiliates (6)							—			79,588			79,588
Exchange (gains) losses							—			10,441			10,441
Corporate operating expenses							—			51,338			51,338
Contribution from P&C and Corporate and Other							313,481			44,476			357,957
Interest expense (7)										32,160			32,160
Non-controlling interests										35,759			35,759
Income tax expense										34,321			34,321
Net income (loss) attributable to ordinary shareholders													$	255,717
Ratios – P&C operations: (8)
Loss and loss expense ratio	64.4		%	45.8		%	58.9		%
Underwriting expense ratio	31.0		%	30.5		%	30.8		%
Combined ratio	95.4		%	76.3		%	89.7		%

____________

(1) Corporate and Other includes other items of our revenue and expenditures that are not evaluated at the segment level for reporting purposes, as well as the Company's Run-Off Life Operations and Life Funds Withheld Assets since the sale of XLLR did not occur until May 1, 2014.

(2) Operating expenses of the segments exclude Corporate operating expenses, shown separately.

(3) Net investment income does not include net investment income related to the net results from structured products.

(4) The net results from P&C structured products include net investment income and interest expense of $18.8 million and $10.8 million, respectively.

(5) Net fee income and other includes operating expenses from the Company's loss prevention consulting services business.

(6) The Company generally records the income related to the alternative funds and to the private investment and operating fund affiliates on a one-month and three-month lag, respectively.

(7) Interest expense excludes interest expense related to deposit liabilities recorded in the Insurance and Reinsurance segments.

(8) Ratios are based on net premiums earned from P&C operations.

Schedule of net premiums earned by line of business

The following tables summarize the Company’s net premiums earned by line of business for the three months ended March 31, 2015 and 2014:

Three Months Ended March 31, 2015 (U.S. dollars in thousands)	Insurance		Reinsurance		Corporate and Other			Total
P&C Operations:
Professional	$	266,411	$	35,008	$	—		$	301,419
Casualty	309,335		58,208		—			367,543
Property catastrophe	—		94,073		—			94,073
Property	128,241		131,224		—			259,465
Marine, energy, aviation and satellite	—		18,075		—			18,075
Specialty	184,724		—		—			184,724
Other (1)	73,595		20,600		—			94,195
Total P&C Operations	$	962,306	$	357,188	$	—		$	1,319,494
Corporate and Other:
Run-off Life operations - Annuity	$	—	$	—	$	(1	)	$	(1	)
Run-off Life operations - Other Life	—		—		14,507			14,507
Total Corporate and Other	$	—	$	—	$	14,506		$	14,506
Total	$	962,306	$	357,188	$	14,506		$	1,334,000
Three Months Ended March 31, 2014 (U.S. dollars in thousands)	Insurance		Reinsurance		Corporate and Other			Total
P&C Operations:
Professional	$	275,427	$	50,104	$	—		$	325,531
Casualty	344,004		76,721		—			420,725
Property catastrophe	—		108,437		—			108,437
Property	139,733		135,239		—			274,972
Marine, energy, aviation and satellite	—		23,514		—			23,514
Specialty	176,909		—		—			176,909
Other (1)	56,367		26,073		—			82,440
Total P&C Operations	$	992,440	$	420,088	$	—		$	1,412,528
Corporate and Other:
Run-off Life operations - Annuity	$	—	$	—	$	31,797		$	31,797
Run-off Life operations - Other Life	—		—		44,514			44,514
Total Corporate and Other	$	—	$	—	$	76,311		$	76,311
Total	$	992,440	$	420,088	$	76,311		$	1,488,839

____________

(1) Other within the Insurance segment includes: excess and surplus, programs, surety, structured indemnity and certain discontinued lines. Other within the Reinsurance segment includes: whole account contracts, accident and health and other lines.

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Investments - Analysis of net realized gains (losses) and the change in unrealized (losses) gains on investments (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Net realized gains (losses): [Abstract]
Net realized gains (losses) on investments	$ 52,891	$ 19,229
Excluding Life Funds Withheld Assets
Net realized gains (losses): [Abstract]
Gross realized gains	62,300	51,213
Gross realized losses on investments sold	(47,122)	(28,257)
OTTI on investments, net of amounts transferred to other comprehensive income	(10,576)	(3,727)
Net realized gains (losses) on investments	4,602	19,229
Life Funds Withheld Assets
Net realized gains (losses): [Abstract]
Gross realized gains	53,128	0
Gross realized losses on investments sold	(390)	0
OTTI on investments, net of amounts transferred to other comprehensive income	(5,209)	0
Net unrealized gains (losses) on investments, trading securities	760	0
Net realized gains (losses) on investments	$ 48,289	$ 0

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Fair Value Measurements - Financial instruments not carried at fair value (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other investments - structured transactions	$ 354,400,000	$ 354,400,000
Deposit liabilities	1,211,203,000	1,245,367,000
Notes payable and debt	2,643,561,000	1,662,580,000
Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Financial Assets	354,352,000	354,382,000
Deposit liabilities	1,211,203,000	1,245,367,000
Notes payable and debt	2,643,561,000	1,662,580,000
Financial Liabilities	3,854,764,000	2,907,947,000
Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Financial Assets	367,491,000	371,625,000
Deposit liabilities	1,528,570,000	1,543,761,000
Notes payable and debt	2,957,605,000	1,897,854,000
Financial Liabilities	$ 4,486,175,000	$ 3,441,615,000

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UNAUDITED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Net income (loss) attributable to ordinary shareholders	$ 36,281	$ 255,717
Change in adjustments related to future policy benefit reserves, net of tax	60,356	(34,004)
Change in net unrealized gains (losses) on affiliate and other investments, net of tax	15,865	3,123
Change in OTTI losses recognized in other comprehensive income, net of tax	9,858	3,296
Change in underfunded pension liability, net of tax	975	(31)
Change in value of cash flow hedge	95	110
Foreign currency translation adjustments, net of tax	36,103	(3,880)
Comprehensive income (loss)	256,993	465,721
Excluding Life Funds Withheld Assets
Change in net unrealized gains (losses) on investments, net of tax	60,345	241,390
Life Funds Withheld Assets
Change in net unrealized gains (losses) on investments, net of tax	$ 37,115	$ 0

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Acquisition and Disposals

3 Months Ended

Mar. 31, 2015

Acquisition and Disposal [Abstract]

Acquisition and Disposals

Acquisition and Disposals

(a)    Catlin Acquisition

On May 1, 2015 (the "Acquisition Date"), the Company completed its acquisition (the "Acquisition") of the entire issued share capital of Catlin Group Limited ("Catlin") as contemplated by that certain Implementation Agreement, dated January 9, 2015 (the “Implementation Agreement”), by and among XL-Ireland, Green Holdings Limited, a direct, wholly-owned subsidiary of the Company (“Green Holdings”), and Catlin.

Pursuant to the terms of the Implementation Agreement, the Acquisition was implemented by way of a scheme of arrangement (the “Scheme”) under Section 99 of the Companies Act 1981 of Bermuda, as amended (the “Companies Act”), and sanctioned by the Supreme Court of Bermuda (the “Court”), immediately after which Catlin was merged with and into Green Holdings under Section 104H of the Companies Act, with Green Holdings as the surviving company, pursuant to the terms of that certain Merger Agreement, dated January 9, 2015 (the “Merger Agreement”), among XL-Ireland, Green Holdings and Catlin. The XL Shares issued in connection with the Acquisition were issued in reliance upon an exemption from registration under U.S. federal securities laws provided by Section 3(a)(10) of the Securities Act of 1933, as amended (the “Securities Act”).

Pursuant to the terms of the Implementation Agreement, XL-Ireland acquired each ordinary share of Catlin, par value $0.01 per share (“Catlin Shares”), for consideration per Catlin Share (the “Acquisition Consideration”) equal to 388 pence in cash and 0.130 of an XL-Ireland ordinary share, par value $0.01 per share (“XL Shares”), subject to the mix and match facility set forth in the Implementation Agreement. The newly-issued XL Shares are listed on the New York Stock Exchange.

XL-Ireland issued approximately 49.9 million XL Shares and paid approximately £1.49 billion in cash to the holders of Catlin Shares as Acquisition Consideration pursuant to the terms of the Scheme.

The foregoing description of the Implementation Agreement and the Merger Agreement is qualified in its entirety by reference to the full text of the Implementation Agreement and Merger Agreement, copies of which were filed on Form 8-K on January 9, 2015.

In connection with the Acquisition, on January 9, 2015, the Company announced that it was able to rely on £1.6 billion of debt to be provided under a bridge facility entered into by XLIT Ltd., a wholly-owned subsidiary of the Company ("XL-Cayman"), and arranged by Morgan Stanley Senior Funding, Inc. and Goldman Sachs Bank USA (the "Bridge Facility") for the purposes of discharging the cash component of the Acquisition consideration.

In addition, on January 9, 2015, the Company entered into deal contingent deliverable foreign exchange forwards ("FX Forwards") with Morgan Stanley Capital Services LLC and Goldman Sachs International. The purpose of the FX Forwards was to mitigate risk of foreign currency exposure related to the Acquisition. Following the close of the Acquisition, the FX Forwards were settled.

The calculation of the consideration transferred to acquire Catlin Shares is as follows:

(In thousands, except per share data)
Catlin Shares outstanding as of April 30, 2015 that will receive share consideration (including the dilutive effect of warrants)	384,118
Exchange ratio per the merger agreement	0.130
Share issuance to Catlin shareholders	49,935
Closing price per share on April 30, 2015 (1)	$	37.08
Share issuance consideration	$	1,851,601
Shares of Catlin common stock outstanding as of April 30, 2015 that will receive cash consideration (including the dilutive effect of warrants)	384,118
Cash price component, per share in GBP	£	3.88
Cash consideration, in GBP	£	1,490,377
Foreign exchange rate: GBP/USD on April 30, 2015	$	1.5349
Cash consideration	$	2,287,579
Total acquisition consideration	$	4,139,180

____________

(1) The closing market price of XL's common stock on the acquisition date represents the fair value of shares issued as part of the consideration transferred.

The Company financed the $2.29 billion cash consideration portion of the Acquisition by issuing $1.0 billion of subordinated debt, net proceeds of which were $980.6 million, and the remaining $1.31 billion by using cash and cash equivalents on hand. See Note 10, "Notes Payable and Debt and Financing Arrangements," for further information on the debt issuance. The Company terminated the commitments under the Bridge Facility as of April 8, 2015, due to a sufficient amount in escrow to discharge the cash consideration payable to Catlin shareholders in respect of the Acquisition.

Due to the limited time subsequent to the Acquisition Date, the accounting for the Acquisition is not yet complete. The Company will file an amendment to its current report on Form 8-K filed on May 4, 2015 to provide pro forma financial statements and intends to include amounts recognized as of the Acquisition Date for the major classes of assets and liabilities assumed, pre-acquisition contingencies and goodwill in the Company's Quarterly Report on Form 10-Q for the second quarter of 2015.

The Company incurred certain acquisition, integration and financing costs associated with the transaction prior to the Acquisition Date. The Company has recorded $25.5 million of these costs for the three months ended March 31, 2015, of which $10.5 million has been included in Operating expenses and $15.0 million has been included in Interest expense. However, the assets acquired and the liabilities assumed from Catlin, the consideration paid to acquire Catlin, as well as the results of Catlin's operations are not reflected in the Unaudited Consolidated Financial Statements as of and for the three months ended March 31, 2015.

(b)    Sale of Strategic Operating Affiliate

On April 1, 2015, XL Re Ltd ("XL Re"), an indirect wholly-owned subsidiary of the Company, completed the previously announced sale of all of its shares in ARX Holding Corp. ("ARX") to The Progressive Corporation ("Progressive") pursuant to the terms of the Stock Purchase Agreement with Progressive. XL Re's shares in ARX represented approximately 40.6% of ARX's outstanding capital stock on a fully diluted basis at the time of the announcement. As of March 31, 2015, the Company recorded XL Re's shares in ARX as $222.6 million, included within Investments in Affiliates.

XL Re received approximately $560 million in proceeds from the transaction, which was based upon the consolidated tangible net book value of ARX and its subsidiaries as of December 31, 2014, and certain other factors. The Company will record a gain of approximately $337 million in the second quarter as a result of this transaction.

(c)    Sale of Life Reinsurance Subsidiary

On May 1, 2014, a wholly owned subsidiary of the Company, XL Insurance (Bermuda) Ltd (“XLIB”), entered into a sale and purchase agreement with GreyCastle Holdings Ltd. (“GreyCastle”) providing for the sale of 100% of the common shares of XLIB's wholly-owned subsidiary, XL Life Reinsurance (SAC) Ltd (“XLLR”), to GreyCastle for $570 million in cash (subsequent to the transaction, XLLR changed its name to GreyCastle Life Reinsurance (SAC) Ltd ("GCLR")). This transaction closed on May 30, 2014. As a result of the transaction, the Company ceded the majority of its life reinsurance business to GCLR via 100% quota share reinsurance (the "Life Retro Arrangements"). This transaction covered a substantial portion of our life reinsurance reserves. The Company ceased writing new life reinsurance contracts in 2009 and since that time has been managing the run-off of its life reinsurance operations ("Run-Off Life Operations"). The designated investments that support the Life Retro Arrangements on a funds withheld basis ("Life Funds Withheld Assets") are managed pursuant to agreed investment guidelines that meet the contractual commitments of the Company's ceding subsidiaries and applicable laws and regulations. All of the investment results associated with the Life Funds Withheld Assets ultimately accrue to GCLR.

The Run-Off Life Operations business, including the business subject to the transaction with GreyCastle, was previously reported within the Company’s Life operations segment. Subsequent to the transaction, the Company no longer considers the Life operations to be a separate operating segment and the results of the Run-Off Life Operations are reported within “Corporate and Other.” See Note 5, "Segment Information," for further information. In addition, certain securities within fixed maturities were reclassified from held to maturity to available for sale in conjunction with this transaction. See Note 6, "Investments," for further information.

All of the reclassified securities are included within Life Funds Withheld Assets, along with certain other available for sale securities as defined in the sale and purchase agreement. The Life Funds Withheld Assets are managed pursuant to agreed investment guidelines that meet the contractual commitments of the XL ceding companies and applicable laws and regulations. All of the investment results associated with the Life Funds Withheld Assets ultimately accrue to GCLR. Because the Company no longer shares in the risks and rewards of the underlying performance of the supporting invested assets, disclosures within the financial statement notes included herein separate the Life Funds Withheld Assets from the rest of the Company's investments.

As of May 30, 2014, gross future policy benefit reserves relating to the Life operations were approximately $5.2 billion. Subsequent to the completion of the GreyCastle transaction, the Company retained approximately $0.4 billion of these reserves, and recorded a reinsurance recoverable from GCLR of $4.8 billion. Under the terms of the transaction, the Company continues to own, on a funds withheld basis, assets supporting the Life Retro Arrangements consisting of cash, fixed maturity securities and accrued interest. Based upon the right of offset, the funds withheld liability owing to GCLR is recorded net of future policy benefit reserves recoverable, and is included within “Funds withheld on life retrocession arrangements (net of future policy benefit reserves recoverable)" on the unaudited consolidated balance sheets. The transaction resulted in an overall after-tax U.S. GAAP net loss of $621.3 million.

As of March 31, 2015, gross future policy benefit reserves relating to the Run-Off Life Operations were approximately $4.4 billion, of which the Company retained approximately $0.4 billion, after consideration of its future policy benefit reserves recoverable from GCLR of approximately $3.9 billion. The net funds withheld liability included within “Funds withheld on life retrocession arrangements, net of future policy benefit reserves recoverable" was $1.1 billion. The Company continued to own $5.1 billion of assets supporting the Life Retro Arrangements.

The impact of the Life Retro Arrangements on the Company's results was as follows:

Impact of Life Retro Arrangements	Three months ended March 31,
(U.S. dollars in thousands)	2015
Underwriting profit (loss) (1)	$	603
Net investment income - Life Funds Withheld Assets	50,419
Net realized gains (losses) on investments sold - Life Funds Withheld Assets	52,738
Net unrealized gains (losses) on investments, Trading - Life Funds Withheld Assets	760
OTTI on investments - Life Funds Withheld Assets	(5,209		)
Exchange (gains) losses	3,684
Other income and expenses	(1,298		)
Net realized and unrealized gains (losses) on life retrocession embedded derivative and derivative instruments - Life Funds Withheld Assets	(229,367		)
Net income (loss)	$	(127,670	)
Change in net unrealized gains (losses) on investments - Life Funds Withheld Assets, net of tax	37,115
Change in adjustments related to future policy benefit reserves, net of tax	60,356
Change in cumulative translation adjustment - Life Funds Withheld Assets, net of tax	30,802
Total changes to other comprehensive income as a result of Life Retro Arrangements	$	128,273
Comprehensive income (loss)	$	603

____________

(1) The underwriting profit of $0.6 million relates to a premium adjustment during the three months ended March 31, 2015 relating to the Life Retro Arrangements transaction which was completed on May 30, 2014. Excluding this transaction, the impact to comprehensive income relating to the Life Retro Arrangements was nil for the three months ended March 31, 2015.

As shown in the table above, although the Company's net income (loss) is subject to variability related to the Life Retro Arrangements, there is minimal net impact on the Company's comprehensive income in any period. The life retrocession embedded derivative value includes the interest income, unrealized gains and losses, and realized gains and losses from sales on the Life Funds Withheld Assets subsequent to May 30, 2014.

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Derivative Instruments - Components of life retrocession embedded derivative (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Derivative [Line Items]
Net realized and unrealized gains (losses) on derivative instruments	$ 16,521	$ 1,810
Life Funds Withheld Assets
Derivative [Line Items]
Net realized and unrealized gains (losses) on life retrocession embedded derivative	(203,730)	0
Net adjustments related to future policy benefit reserves, net of tax	(11,954)
Net realized and unrealized gains (losses) on derivative instruments - Life Funds Withheld Assets	(13,683)	0
Net realized and unrealized gains (losses) on derivative instruments	(229,367)	0
Life Funds Withheld Assets | Interest Income [Member]
Derivative [Line Items]
Net realized and unrealized gains (losses) on life retrocession embedded derivative	(50,996)	0
Life Funds Withheld Assets | Net realized and unrealized gains (losses) on derivative instruments
Derivative [Line Items]
Net realized and unrealized gains (losses) on life retrocession embedded derivative	(152,830)	0
Life Funds Withheld Assets | Other Income [Member]
Derivative [Line Items]
Net realized and unrealized gains (losses) on life retrocession embedded derivative	96	0
Life Funds Withheld Assets | Unrealized gains (losses) on investments
Derivative [Line Items]
Net adjustments related to future policy benefit reserves, net of tax		$ 0

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Commitments and Contingencies (Details) (USD $)	3 Months Ended	12 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Guarantor Obligations [Line Items]
Aggregate exposure outstanding	$ 80,800,000
Total gross claim liability recorded	$ 0
Financial Guarantee Insurance Contracts Outstanding Weighted Average Contract Period	25 years	25 years 2 months 12 days
Financial Guarantee Related to Securities Including Some Issued By European Financials [Member]
Guarantor Obligations [Line Items]
Closing number of financial guarantee contracts	2

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Investments (Tables)

3 Months Ended

Mar. 31, 2015

Investments, Debt and Equity Securities [Abstract]

Amortized cost and fair value summary

The cost (amortized cost for fixed maturities and short-term investments), fair value, gross unrealized gains and gross unrealized (losses), including OTTI recorded in accumulated other comprehensive income (“AOCI”) of the Company’s AFS investments as of March 31, 2015 and December 31, 2014, were as follows:

March 31, 2015 (U.S. dollars in thousands)	Cost or Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value		Non-credit Related OTTI (1)
Fixed maturities - AFS - Excluding Life Funds Withheld Assets
U.S. Government and Government-Related/Supported	$	3,299,458	$	87,025	$	(8,141	)	$	3,378,342	$	—
Corporate (2)	7,806,607		398,357		(50,326		)	8,154,638		(3,309		)
RMBS – Agency	3,585,638		131,468		(5,772		)	3,711,334		—
RMBS – Non-Agency	368,317		29,770		(17,952		)	380,135		(58,364		)
CMBS	1,010,518		25,603		(3,401		)	1,032,720		(1,801		)
CDO	520,929		1,675		(21,630		)	500,974		(1,648		)
Other asset-backed securities (2)	1,134,928		41,386		(8,947		)	1,167,367		(1,662		)
U.S. States and political subdivisions of the States	1,842,561		131,843		(1,264		)	1,973,140		—
Non-U.S. Sovereign Government, Provincial, Supranational and Government-Related/Supported	4,010,656		154,829		(71,714		)	4,093,771		—
Total fixed maturities - AFS - Excluding Life Funds Withheld Assets	$	23,579,612	$	1,001,956	$	(189,147	)	$	24,392,421	$	(66,784	)
Total short-term investments - Excluding Life Funds Withheld Assets	$	169,903	$	149	$	(1,190	)	$	168,862	$	—
Total equity securities - Excluding Life Funds Withheld Assets	$	665,682	$	132,731	$	(14,942	)	$	783,471	$	—
Total investments - AFS - Excluding Life Funds Withheld Assets	$	24,415,197	$	1,134,836	$	(205,279	)	$	25,344,754	$	(66,784	)
Fixed maturities - AFS - Life Funds Withheld Assets
U.S. Government and Government-Related/Supported	$	13,163	$	4,450	$	—		$	17,613	$	—
Corporate (2)	2,277,295		468,931		—			2,746,226		—
RMBS – Agency	1,641		489		—			2,130		—
RMBS – Non-Agency	32,880		5,928		—			38,808		—
CMBS	131,830		27,427		—			159,257		—
Other asset-backed securities	209,714		34,426		—			244,140		—
Non-U.S. Sovereign Government, Provincial, Supranational and Government-Related/Supported	1,123,966		385,839		—			1,509,805		—
Total fixed maturities - AFS - Life Funds Withheld Assets	$	3,790,489	$	927,490	$	—		$	4,717,979	$	—
Total investments - AFS	$	28,205,686	$	2,062,326	$	(205,279	)	$	30,062,733	$	(66,784	)
Fixed maturities - Trading - Life Funds Withheld Assets								Amortized Cost		Fair Value
Corporate								$	136,681	$	137,438
Other asset-backed securities								1,966		1,939
Total investments - Trading - Life Funds Withheld Assets								$	138,647	$	139,377

___________

(1) Represents the non-credit component of OTTI losses, adjusted for subsequent sales of securities. It does not include the change in fair value subsequent to the date an impairment was recorded.

(2) Included are certain medium term notes supported primarily by pools of European investment grade credit with varying degrees of leverage. The notes have a fair value of $74.8 million and an amortized cost of $63.8 million. These notes allow the investor to participate in cash flows of the underlying bonds including certain residual values, which could serve to either decrease or increase the ultimate values of these notes.

December 31, 2014 (U.S. dollars in thousands)	Cost or Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value		Non-credit Related OTTI (1)
Fixed maturities - AFS - Excluding Life Funds Withheld Assets
U.S. Government and Government-Related/Supported	$	2,100,851	$	77,889	$	(6,787	)	$	2,171,953	$	—
Corporate (2)	8,462,130		365,805		(49,562		)	8,778,373		(3,309		)
RMBS – Agency	3,625,171		114,188		(10,783		)	3,728,576		—
RMBS – Non-Agency	404,398		41,108		(18,155		)	427,351		(67,918		)
CMBS	1,033,819		23,987		(5,262		)	1,052,544		(2,033		)
CDO	717,544		1,659		(27,169		)	692,034		(1,663		)
Other asset-backed securities (2)	1,028,528		42,810		(6,045		)	1,065,293		(1,797		)
U.S. States and political subdivisions of the States	1,892,566		129,910		(1,204		)	2,021,272		—
Non-U.S. Sovereign Government, Provincial, Supranational and Government-Related/Supported	4,162,425		139,484		(61,836		)	4,240,073		—
Total fixed maturities - AFS - Excluding Life Funds Withheld Assets	$	23,427,432	$	936,840	$	(186,803	)	$	24,177,469	$	(76,720	)
Total short-term investments - Excluding Life Funds Withheld Assets	$	257,221	$	49	$	(543	)	$	256,727	$	—
Total equity securities - Excluding Life Funds Withheld Assets	$	763,833	$	130,689	$	(26,230	)	$	868,292	$	—
Total investments - AFS - Excluding Life Funds Withheld Assets	$	24,448,486	$	1,067,578	$	(213,576	)	$	25,302,488	$	(76,720	)
Fixed maturities - AFS - Life Funds Withheld Assets
U.S. Government and Government-Related/Supported	$	14,866	$	3,858	$	—		$	18,724	$	—
Corporate (2)	2,407,849		410,131		—			2,817,980		—
RMBS – Agency	3,301		481		—			3,782		—
RMBS – Non-Agency	71,075		14,260		—			85,335		—
CMBS	168,886		24,281		—			193,167		—
Other asset-backed securities	238,168		35,373		—			273,541		—
Non-U.S. Sovereign Government, Provincial, Supranational and Government-Related/Supported	1,397,194		391,842		—			1,789,036		—
Total fixed maturities - AFS - Life Funds Withheld Assets	$	4,301,339	$	880,226	$	—		$	5,181,565	$	—
Total investments - AFS	$	28,749,825	$	1,947,804	$	(213,576	)	$	30,484,053	$	(76,720	)
Fixed maturities - Trading - Life Funds Withheld Assets								Amortized Cost		Fair Value
Corporate								$	1,180	$	1,171
Total investments - Trading - Life Funds Withheld Assets								$	1,180	$	1,171

____________

(1) Represents the non-credit component of OTTI losses, adjusted for subsequent sales of securities. It does not include the change in fair value subsequent to the date an impairment was recorded.

(2) Included are certain medium term notes supported primarily by pools of European investment grade credit with varying degrees of leverage. The notes have a fair value of $79.9 million and an amortized cost of $68.4 million. These notes allow the investor to participate in cash flows of the underlying bonds including certain residual values, which could serve to either decrease or increase the ultimate values of these notes.

Contractual maturities summary

The contractual maturities of AFS fixed income securities at March 31, 2015 and December 31, 2014 are shown below. Actual maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties.

	March 31, 2015				December 31, 2014
(U.S. dollars in thousands)	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Fixed maturities - AFS - Excluding Life Funds Withheld Assets
Due less than one year	$	1,770,647	$	1,781,224	$	1,972,224	$	1,980,429
Due after 1 through 5 years	9,698,659		9,923,517		8,919,037		9,113,651
Due after 5 through 10 years	4,049,907		4,226,001		4,232,396		4,412,569
Due after 10 years	1,440,069		1,669,149		1,494,315		1,705,022
	$	16,959,282	$	17,599,891	$	16,617,972	$	17,211,671
RMBS – Agency	3,585,638		3,711,334		3,625,171		3,728,576
RMBS – Non-Agency	368,317		380,135		404,398		427,351
CMBS	1,010,518		1,032,720		1,033,819		1,052,544
CDO	520,929		500,974		717,544		692,034
Other asset-backed securities	1,134,928		1,167,367		1,028,528		1,065,293
Total mortgage and asset-backed securities	$	6,620,330	$	6,792,530	$	6,809,460	$	6,965,798
Total fixed maturities - AFS - Excluding Life Funds Withheld Assets	$	23,579,612	$	24,392,421	$	23,427,432	$	24,177,469
Fixed maturities - AFS - Life Funds Withheld Assets
Due less than one year	$	97,637	$	107,530	$	117,048	$	125,326
Due after 1 through 5 years	626,869		676,507		638,526		685,787
Due after 5 through 10 years	798,923		933,986		1,004,698		1,165,348
Due after 10 years	1,890,995		2,555,621		2,059,637		2,649,279
	$	3,414,424	$	4,273,644	$	3,819,909	$	4,625,740
RMBS – Agency	1,641		2,130		3,301		3,782
RMBS – Non-Agency	32,880		38,808		71,075		85,335
CMBS	131,830		159,257		168,886		193,167
Other asset-backed securities	209,714		244,140		238,168		273,541
Total mortgage and asset-backed securities	$	376,065	$	444,335	$	481,430	$	555,825
Total fixed maturities - AFS - Life Funds Withheld Assets	$	3,790,489	$	4,717,979	$	4,301,339	$	5,181,565
Total fixed maturities - AFS	$	27,370,101	$	29,110,400	$	27,728,771	$	29,359,034
Fixed maturities - Trading - Life Funds Withheld Assets
Due less than one year	$	—	$	—	$	—	$	—
Due after 1 through 5 years	64,739		64,733		—		—
Due after 5 through 10 years	5,188		5,131		1,180		1,171
Due after 10 years	66,754		67,574		—		—
	$	136,681	$	137,438	$	1,180	$	1,171
Other asset-backed securities	1,966		1,939		—		—
Total mortgage and asset-backed securities	$	1,966	$	1,939	$	—	$	—
Total fixed maturities - Trading - Life Funds Withheld Assets	$	138,647	$	139,377	$	1,180	$	1,171

Summary of unrealized losses

The following is an analysis of how long the AFS securities as of March 31, 2015 and December 31, 2014 had been in a continual unrealized loss position:

	Less than 12 months					Equal to or greater than 12 months
March 31, 2015 (U.S. dollars in thousands)	Fair Value		Gross Unrealized Losses			Fair Value		Gross Unrealized Losses
Fixed maturities and short-term investments - AFS
U.S. Government and Government-Related/Supported	$	249,646	$	(3,541	)	$	143,891	$	(4,619	)
Corporate	688,725		(40,874		)	190,397		(9,730		)
RMBS – Agency	177,627		(914		)	279,354		(4,858		)
RMBS – Non-Agency	51,876		(1,815		)	188,932		(16,137		)
CMBS	120,862		(393		)	109,324		(3,008		)
CDO	92,517		(294		)	346,372		(21,336		)
Other asset-backed securities	92,193		(6,219		)	37,357		(2,728		)
U.S. States and political subdivisions of the States	55,707		(695		)	15,310		(569		)
Non-U.S. Sovereign Government, Provincial, Supranational and Government-Related/Supported	681,300		(39,085		)	322,974		(33,522		)
Total fixed maturities and short-term investments - AFS	$	2,210,453	$	(93,830	)	$	1,633,911	$	(96,507	)
Total equity securities	$	119,625	$	(14,942	)	$	—	$	—

	Less than 12 months					Equal to or greater than 12 months
December 31, 2014 (U.S. dollars in thousands)	Fair Value		Gross Unrealized Losses			Fair Value		Gross Unrealized Losses
Fixed maturities and short-term investments - AFS
U.S. Government and Government-Related/Supported	$	251,091	$	(1,196	)	$	342,890	$	(5,603	)
Corporate	1,337,470		(33,881		)	424,221		(15,754		)
RMBS – Agency	134,535		(220		)	512,652		(10,563		)
RMBS – Non-Agency	45,378		(1,358		)	202,700		(16,797		)
CMBS	78,356		(385		)	169,065		(4,877		)
CDO	249,803		(2,666		)	414,516		(24,503		)
Other asset-backed securities	143,044		(2,813		)	57,544		(3,232		)
U.S. States and political subdivisions of the States	32,187		(210		)	63,695		(994		)
Non-U.S. Sovereign Government, Provincial, Supranational and Government-Related/Supported	624,346		(19,043		)	558,422		(43,251		)
Total fixed maturities and short-term investments - AFS	$	2,896,210	$	(61,772	)	$	2,745,705	$	(125,574	)
Total equity securities	$	191,193	$	(26,230	)	$	—	$	—

Analysis of net realized gains (losses) on investments

The following represents an analysis of net realized gains (losses) on investments:

Net Realized Gains (Losses) on Investments	Three months ended March 31,
(U.S. dollars in thousands)	2015			2014
Net realized gains (losses) on investments - excluding Life Funds Withheld Assets:
Gross realized gains	$	62,300		$	51,213
Gross realized losses on investments sold	(47,122		)	(28,257		)
OTTI on investments, net of amounts transferred to other comprehensive income	(10,576		)	(3,727		)
	$	4,602		$	19,229
Net realized gains (losses) on investments and net unrealized gains (losses) on investments, Trading - Life Funds Withheld Assets:
Gross realized gains	$	53,128		$	—
Gross realized losses on investments sold	(390		)	—
OTTI on investments, net of amounts transferred to other comprehensive income	(5,209		)	—
Net unrealized gains (losses) on trading securities	$	760		$	—
	$	48,289		$	—
Total net realized gains (losses) on investments	$	52,891		$	19,229

Credit loss impairments on fixed inmcome securities rollforward

The following table sets forth the amount of credit loss impairments on fixed income securities held by the Company for which a portion of the OTTI loss was recognized in OCI, as of the dates or for the periods indicated and the corresponding changes in such amounts.

Credit Loss Impairments	Three months ended March 31,
(U.S. dollars in thousands)	2015			2014
Opening balance as of beginning of indicated period	$	131,942		$	174,805
Credit loss impairment recognized in the current period on securities not previously impaired	7,560			12
Credit loss impairments previously recognized on securities which matured, paid down, prepaid or were sold during the period	(28,539		)	(3,348		)
Additional credit loss impairments recognized in the current period on securities previously impaired	141			2,261
Accretion of credit loss impairments previously recognized due to an increase in cash flows expected to be collected	(2,646		)	(2,347		)
Balance as of March 31,	$	108,458		$	171,383

XML

Acquisition and Disposals - Sale of Life Re Narrative (Details) (USD $)	3 Months Ended		0 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	May 30, 2014	May 01, 2014	Dec. 31, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Future policy benefit reserves	$ 4,375,863,000				$ 4,707,199,000
Future policy benefit reserves recoverable	3,933,589,000				4,265,678,000
Funds withheld on life retrocession arrangements (net of future policy benefit reserves recoverable)	1,138,652,000				1,155,016,000
Underwriting profit (loss)	139,207,000	97,231,000
Comprehensive income (loss)	220,712,000	210,004,000
XL Re Life (SAC) Ltd
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Sale of subsidiary stock, percentage			100.00%
Consideration received			570,000,000
Quota share reinsurance percentage			100.00%
Future policy benefit reserves recoverable	3,900,000,000
Loss on disposal				621,300,000
Funds withheld asset	5,100,000,000
Comprehensive income (loss)	0
Life insurance product line | XL Re Life (SAC) Ltd
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Future policy benefit reserves			5,200,000,000
Future policy benefit reserves retained			400,000,000
Future policy benefit reserves recoverable			4,800,000,000
Life Funds Withheld Assets | XL Re Life (SAC) Ltd
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Underwriting profit (loss)	603,000
Comprehensive income (loss)	$ 603,000

XML

Computation of Earnings Per Ordinary Share and Ordinary Share Equivalent

3 Months Ended

Mar. 31, 2015

Earnings Per Share [Abstract]

Computation of Earnings Per Ordinary Share and Ordinary Share Equivalent

Computation of Earnings Per Ordinary Share and Ordinary Share Equivalent

The following table sets forth the computation of basic and diluted earnings per ordinary share for the three months ended March 31, 2015 and 2014:

	Three Months Ended March 31,
(U.S. dollars in thousands, except per share amounts)	2015		2014
Basic earnings per ordinary share & ordinary share equivalents outstanding:
Net income (loss) attributable to ordinary shareholders	$	36,281	$	255,717
Weighted average ordinary shares outstanding, in thousands - basic	255,724		276,337
Basic earnings per ordinary share & ordinary share equivalents outstanding	$	0.14	$	0.93
Diluted earnings per ordinary share & ordinary share equivalents outstanding:
Weighted average ordinary shares outstanding, in thousands - basic	255,724		276,337
Impact of share-based compensation and certain conversion features, in thousands	4,980		4,121
Weighted average ordinary shares outstanding, in thousands - diluted	260,704		280,458
Diluted earnings per ordinary share & ordinary share equivalents outstanding	$	0.14	$	0.91
Dividends per ordinary share	$	0.16	$	0.16

For the three months ended March 31, 2015 and 2014, ordinary shares available for issuance under share-based compensation plans of 5.0 million and 6.1 million, respectively, were not included in the calculation of diluted earnings per ordinary share because the assumed exercise or issuance of such shares would be anti-dilutive.