RenaissanceRe (RNR) 10-Q 28 Apr 16 2016 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2016	Apr. 25, 2016
Document And Entity Information [Abstract]
Entity Registrant Name	RENAISSANCERE HOLDINGS LTD.
Trading Symbol	RNR
Entity Central Index Key	913,144
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Mar. 31, 2016
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus	Q1
Amendment Flag	false
Entity Common Stock, Shares Outstanding		43,095,065

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Assets
Fixed maturity investments trading, at fair value (Amortized cost $6,858,254 and $6,825,877 at March 31, 2016 and December 31, 2015, respectively)	$ 6,890,592	$ 6,765,005
Fixed maturity investments available for sale, at fair value (Amortized cost $12,384 and $15,943 at March 31, 2016 and December 31, 2015, respectively)	13,985	17,813
Short term investments, at fair value	1,171,523	1,208,401
Equity investments trading, at fair value	335,509	393,877
Other investments, at fair value	496,900	481,621
Investments in other ventures, under equity method	131,692	132,351
Total investments	9,040,201	8,999,068
Cash and cash equivalents	449,149	506,885
Premiums receivable	1,094,116	778,009
Prepaid reinsurance premiums	444,954	230,671
Reinsurance recoverable	167,228	134,526
Accrued investment income	37,492	39,749
Deferred acquisition costs	287,291	199,380
Receivable for investments sold	204,306	220,834
Other assets	167,514	181,011
Goodwill and other intangible assets	261,662	265,154
Total assets	12,153,913	11,555,287
Liabilities
Reserve for claims and claim expenses	2,811,523	2,767,045
Unearned premiums	1,261,454	889,102
Debt	957,536	960,495
Reinsurance balances payable	618,344	523,974
Payable for investments purchased	454,593	391,378
Other liabilities	208,533	245,145
Total liabilities	$ 6,311,983	$ 5,777,139
Commitments and Contingencies
Redeemable noncontrolling interest	$ 1,081,337	$ 1,045,964
Shareholders’ Equity
Preference shares: $1.00 par value – 16,000,000 shares issued and outstanding at March 31, 2016 (December 31, 2015 – 16,000,000)	400,000	400,000
Common shares: $1.00 par value – 43,095,065 shares issued and outstanding at March 31, 2016 (December 31, 2015 – 43,701,064)	43,095	43,701
Additional paid-in capital	422,422	507,674
Accumulated other comprehensive income	1,665	2,108
Retained earnings	3,893,411	3,778,701
Total shareholders’ equity attributable to RenaissanceRe	4,760,593	4,732,184
Total liabilities, noncontrolling interests and shareholders’ equity	$ 12,153,913	$ 11,555,287

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Statement of Financial Position [Abstract]
Fixed maturity investments trading, amortized cost	$ 6,858,254	$ 6,825,877
Fixed maturity investments available for sale, amortized cost	$ 12,384	$ 15,943
Preference Shares, Par Value (In dollars per share)	$ 1	$ 1
Preference Shares, Shares issued (In shares)	16,000,000	16,000,000
Preference Shares, Shares outstanding (In shares)	16,000,000	16,000,000
Common Shares, Par Value (In dollars per share)	$ 1	$ 1
Common Shares, Shares issued (In shares)	43,095,065	43,701,064
Common Shares, Shares outstanding (In shares)	43,095,065	43,701,064

Consolidated Statements Of Oper

Consolidated Statements Of Operations - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Revenues
Gross premiums written	$ 862,133	$ 643,578
Net premiums written	511,675	404,035
Increase in unearned premiums	(158,069)	(107,275)
Net premiums earned	353,606	296,760
Net investment income	28,863	39,707
Net foreign exchange losses	(1,692)	(3,130)
Equity in earnings of other ventures	1,611	5,295
Other income	4,079	1,539
Net realized and unrealized gains on investments	61,653	41,749
Total revenues	448,120	381,920
Expenses
Net claims and claim expenses incurred	126,605	76,853
Acquisition expenses	65,592	43,401
Operational expenses	56,235	45,621
Corporate expenses	8,225	45,533
Interest expense	10,538	5,316
Total expenses	267,195	216,724
Income before taxes	180,925	165,196
Income tax (expense) benefit	(2,744)	47,904
Net income	178,181	213,100
Net income attributable to redeemable noncontrolling interests	(44,591)	(39,662)
Net income attributable to RenaissanceRe	133,590	173,438
Dividends on preference shares	(5,595)	(5,595)
Net income available to RenaissanceRe common shareholders	$ 127,995	$ 167,843
Net income available to RenaissanceRe common shareholders per common share – basic (in usd per share)	$ 2.97	$ 4.18
Net income available to RenaissanceRe common shareholders per common share – diluted (in usd per share)	2.95	4.14
Dividends per common share	$ 0.31	$ 0.30

Consolidated Statements Of Comp

Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Comprehensive income
Net income	$ 178,181	$ 213,100
Change in net unrealized gains on investments	(443)	(74)
Comprehensive income	177,738	213,026
Net income attributable to redeemable noncontrolling interests	(44,591)	(39,662)
Comprehensive income attributable to redeemable noncontrolling interests	(44,591)	(39,662)
Comprehensive income attributable to RenaissanceRe	133,147	173,364
Disclosure regarding net unrealized gains
Total net realized and unrealized holding gains on investments	(443)	(23)
Net realized gains on fixed maturity investments available for sale	0	(51)
Change in net unrealized gains on investments	$ (443)	$ (74)

Consolidated Statements Of Chan

Consolidated Statements Of Changes In Shareholders' Equity - USD ($) $ in Thousands	Total	Preference Shares	Common Shares	Additional Paid-In Capital	Accumulated Other Comprehensive Income	Retained Earnings
Beginning of period at Dec. 31, 2014		$ 400,000	$ 38,442	$ 0	$ 3,416	$ 3,423,857
Issuance of shares			7,435	754,384
Repurchase of shares			0	0
Change in redeemable noncontrolling interests				(260)
Exercise of options and issuance of restricted stock awards			149	817
Change in net unrealized gains on investments	$ 74				(74)
Net income	213,100					213,100
Net income attributable to redeemable noncontrolling interests	(39,662)					(39,662)
Dividends on common shares						(13,720)
Dividends on preference shares	(5,595)					(5,595)
End of period at Mar. 31, 2015		400,000	46,026	754,941	3,342	3,577,980
Total shareholders’ equity	4,782,289
Beginning of period at Dec. 31, 2015	4,732,184	400,000	43,701	507,674	2,108	3,778,701
Issuance of shares			0	0
Repurchase of shares			(769)	(84,397)
Change in redeemable noncontrolling interests				(77)
Exercise of options and issuance of restricted stock awards			163	(778)
Change in net unrealized gains on investments	443				(443)
Net income	178,181					178,181
Net income attributable to redeemable noncontrolling interests	(44,591)					(44,591)
Dividends on common shares						(13,285)
Dividends on preference shares	(5,595)					(5,595)
End of period at Mar. 31, 2016	4,760,593	$ 400,000	$ 43,095	$ 422,422	$ 1,665	$ 3,893,411
Total shareholders’ equity	$ 4,760,593

Consolidated Statements Of Cash

Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Cash flows used in operating activities
Net income	$ 178,181	$ 213,100
Adjustments to reconcile net income to net cash used in operating activities
Amortization, accretion and depreciation	8,752	4,813
Equity in undistributed earnings of other ventures	(415)	(3,676)
Net realized and unrealized gains on investments	(61,653)	(41,749)
Net unrealized losses (gains) included in net investment income	15,362	(4,885)
Change in:
Premiums receivable	(316,107)	(193,690)
Prepaid reinsurance premiums	(214,283)	(130,801)
Reinsurance recoverable	(32,702)	(12,274)
Deferred acquisition costs	(87,911)	(35,914)
Reserve for claims and claim expenses	44,478	(28,787)
Unearned premiums	372,352	238,075
Reinsurance balances payable	94,370	35,995
Other	(10,131)	(158,812)
Net cash used in operating activities	(9,707)	(118,605)
Cash flows provided by investing activities
Proceeds from sales and maturities of fixed maturity investments trading	2,540,073	2,075,678
Purchases of fixed maturity investments trading	(2,656,283)	(1,490,123)
Proceeds from sales and maturities of fixed maturity investments available for sale	3,662	1,757
Net sales of equity investments trading	119,369	50,627
Net sales of short term investments	134,009	112,795
Net purchases of other investments	(39,698)	(7,952)
Net purchases of investments in other ventures	0	(126)
Net purchases of other assets	0	(2,500)
Net purchase of Platinum	0	(678,152)
Net cash provided by investing activities	101,132	62,004
Cash flows (used in) provided by financing activities
Dividends paid – RenaissanceRe common shares	(13,285)	(13,720)
Dividends paid – preference shares	(5,595)	(5,595)
RenaissanceRe common share repurchases	(85,166)	(446)
Issuance of debt, net of expenses	0	297,823
Net third party redeemable noncontrolling interest share transactions	(50,374)	(180,285)
Net cash (used in) provided by financing activities	(154,420)	97,777
Effect of exchange rate changes on foreign currency cash	5,259	(9,142)
Net (decrease) increase in cash and cash equivalents	(57,736)	32,034
Cash and cash equivalents, beginning of period	506,885	525,584
Cash and cash equivalents, end of period	$ 449,149	$ 557,618

Organization

Organization	3 Months Ended
	Mar. 31, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization	ORGANIZATION This report on Form 10-Q should be read in conjunction with the Company’s Annual Report on Form 10-K (“Form 10-K”) for the fiscal year ended December 31, 2015 . RenaissanceRe was formed under the laws of Bermuda on June 7, 1993. Together with its wholly owned and majority-owned subsidiaries and DaVinciRe (as defined below), which are collectively referred to herein as the “Company”, RenaissanceRe provides reinsurance and insurance coverages and related services to a broad range of customers. • On March 2, 2015, RenaissanceRe completed its acquisition of Platinum Underwriters Holdings, Ltd. (“Platinum”). As a result of the acquisition, Platinum and its subsidiaries became wholly owned subsidiaries of RenaissanceRe, including Platinum Underwriters Bermuda, Ltd. (“Platinum Bermuda”) and Renaissance Reinsurance U.S. Inc., formerly known as Platinum Underwriters Reinsurance, Inc. ("Renaissance Reinsurance U.S."). The Company accounted for the acquisition of Platinum under the acquisition method of accounting in accordance with Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) Topic Business Combinations and the Company's consolidated results of operations include those of Platinum from March 2, 2015. • Renaissance Reinsurance, the Company’s principal reinsurance subsidiary, provides property catastrophe and specialty reinsurance coverages to insurers and reinsurers on a worldwide basis. • Renaissance Reinsurance U.S. is a reinsurance company domiciled in the state of Maryland that provides property and casualty reinsurance coverages to insurers and reinsurers, primarily in the Americas. • RenaissanceRe Specialty Risks Ltd. (“RenaissanceRe Specialty Risks”) is a Bermuda-domiciled excess and surplus lines insurance company that is listed on the National Association of Insurance Commissioners’ International Insurance Department’s Quarterly List of Alien Insurers as an eligible surplus lines insurer. RenaissanceRe Underwriting Managers U.S. LLC, a specialty reinsurance agency domiciled in the state of Connecticut, provides specialty treaty reinsurance solutions on both a quota share and excess of loss basis; and writes business on behalf of RenaissanceRe Specialty U.S. Ltd. (“RenaissanceRe Specialty U.S.”), a Bermuda-domiciled reinsurer, which operates subject to U.S. federal income tax, and RenaissanceRe Syndicate 1458 (“Syndicate 1458”). • Syndicate 1458 is the Company’s Lloyd’s syndicate. RenaissanceRe Corporate Capital (UK) Limited (“RenaissanceRe CCL”), a wholly owned subsidiary of RenaissanceRe, is Syndicate 1458’s sole corporate member and RenaissanceRe Syndicate Management Ltd. (“RSML”), a wholly owned subsidiary of RenaissanceRe, is the managing agent for Syndicate 1458. • The Company also manages property catastrophe and specialty reinsurance business written on behalf of joint ventures, which principally include Top Layer Reinsurance Ltd. (“Top Layer Re”), recorded under the equity method of accounting, and DaVinci Reinsurance Ltd. (“DaVinci”). Because the Company owns a noncontrolling equity interest in, but controls a majority of the outstanding voting power of DaVinci’s parent, DaVinciRe Holdings Ltd. (“DaVinciRe”), the results of DaVinci and DaVinciRe are consolidated in the Company’s financial statements and all significant intercompany transactions have been eliminated. Redeemable noncontrolling interest - DaVinciRe represents the interests of external parties with respect to the net income and shareholders’ equity of DaVinciRe. Renaissance Underwriting Managers, Ltd. (“RUM”), a wholly owned subsidiary of RenaissanceRe, acts as exclusive underwriting manager for these joint ventures in return for fee-based income and profit participation. • RenaissanceRe Medici Fund Ltd. (“Medici”) is an exempted fund, incorporated under the laws of Bermuda. Medici’s objective is to seek to invest substantially all of its assets in various insurance based investment instruments that have returns primarily tied to property catastrophe risk. Third party investors have subscribed for a portion of the participating, non-voting common shares of Medici. Because the Company owns a noncontrolling equity interest in, but controls a majority of the outstanding voting power of, Medici’s parent, RenaissanceRe Fund Holdings Ltd. (“Fund Holdings”), the results of Medici and Fund Holdings are consolidated in the Company’s financial statements and all significant inter-company transactions have been eliminated. Redeemable noncontrolling interest - Medici represents the interests of external parties with respect to the net income and shareholders’ equity of Medici. • Effective January 1, 2013, the Company formed and launched a managed joint venture, Upsilon RFO Re Ltd., formerly known as Upsilon Reinsurance II Ltd. (“Upsilon RFO”), a Bermuda domiciled special purpose insurer (“SPI”), to provide additional capacity to the worldwide aggregate and per-occurrence primary and retrocessional property catastrophe excess of loss market. Upsilon RFO is considered a variable interest entity (“VIE”) and the Company is considered the primary beneficiary. As a result, Upsilon RFO is consolidated by the Company and all significant inter-company transactions have been eliminated. • Effective November 13, 2014, the Company incorporated RenaissanceRe Upsilon Fund Ltd. (“Upsilon Fund”), an exempted Bermuda segregated accounts company. Upsilon Fund was formed to provide a fund structure through which third party investors can invest in reinsurance risk managed by the Company. As a segregated accounts company, Upsilon Fund is permitted to establish segregated accounts to invest in and hold identified pools of assets and liabilities. Each pool of assets and liabilities in each segregated account is structured to be ring-fenced from any claims from the creditors of Upsilon Fund’s general account and from the creditors of other segregated accounts within Upsilon Fund. Third party investors purchase redeemable, non-voting preference shares linked to specific segregated accounts of Upsilon Fund and own 100% of these shares. Upsilon Fund is an investment company and is considered a VIE. The Company does not have a variable interest in Upsilon Fund and as a result Upsilon Fund is not consolidated by the Company.

Significant Accounting Policies

Significant Accounting Policies	3 Months Ended
	Mar. 31, 2016
Accounting Policies [Abstract]
Significant Accounting Policies	SIGNIFICANT ACCOUNTING POLICIES There have been no material changes to the Company’s significant accounting policies as described in its Form 10-K for the year ended December 31, 2015 , except as noted below. BASIS OF PRESENTATION These consolidated financial statements have been prepared on the basis of accounting principles generally accepted in the United States (“GAAP”) for interim financial information and in conformity with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by GAAP for complete consolidated financial statements. In the opinion of management, these unaudited consolidated financial statements reflect all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation of the Company’s financial position and results of operations as at the end of and for the periods presented. All significant intercompany accounts and transactions have been eliminated from these statements. Certain comparative information has been reclassified to conform to the current presentation. Because of the seasonality of the Company’s business, the results of operations and cash flows for any interim period will not necessarily be indicative of the results of operations and cash flows for the full fiscal year or subsequent quarters. USE OF ESTIMATES IN FINANCIAL STATEMENTS The preparation of consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported and disclosed amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ materially from those estimates. The major estimates reflected in the Company’s consolidated financial statements include, but are not limited to, the reserve for claims and claim expenses; reinsurance recoverables, including allowances for reinsurance recoverables deemed uncollectible; estimates of written and earned premiums; fair value, including the fair value of investments, financial instruments and derivatives; impairment charges and the Company’s deferred tax valuation allowance. RECENTLY ADOPTED ACCOUNTING PRONOUNCEMENTS Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could Be Achieved after the Requisite Service Period In June 2014, the FASB issued ASU No. 2014-12, Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could Be Achieved after the Requisite Service Period (“ASU 2014-12”). The objective of ASU 2014-12 is to resolve the diverse accounting treatment of share-based payment awards in situations where an employee would be eligible to vest in the award regardless of whether the employee is rendering service on the date the performance target is achieved. For example, if an employee is eligible to retire or otherwise terminate employment before the end of the period in which a performance target could be achieved and still be eligible to vest in the award. ASU 2014-12 will resolve if and when the performance target is achieved. ASU 2014-12 became effective for all entities in annual and interim periods beginning after December 15, 2015. Early adoption was permitted. The Company adopted ASU 2014-12 effective January 1, 2016, and prospectively applied the amendments in ASU 2014-12 to all awards granted or modified after the effective date. The adoption of ASU 2014-12 did not have a material impact on the Company’s consolidated statements of operations and financial position. Amendments to the Consolidation Analysis In February 2015, the FASB issued ASU No. 2015-02, Amendments to the Consolidation Analysis (“ASU 2015-02”). ASU 2015-02 will affect reporting entities that are required to evaluate whether they should consolidate certain legal entities. All legal entities are subject to reevaluation under ASU 2015-02. ASU 2015-02 set forth amendments: modifying the evaluation of whether limited partnerships and similar legal entities are VIEs; eliminating the presumption that a general partner should consolidate a limited partnership; affecting the consolidation analysis of reporting entities that are involved with VIEs, particularly those that have fee arrangement and related party relationships; and providing a scope exception from consolidation guidance for reporting entities with interests in certain investment funds. ASU 2015-02 became effective for public business entities for fiscal years, and for interim periods within those fiscal years, beginning after December 15, 2015. Early adoption was permitted. The Company adopted ASU 2015-02 effective January 1, 2016 and it did not have a material impact on the Company’s consolidated statements of operations and financial position. See “Note 7 . Variable Interest Entities” for additional information related to the Company’s VIE’s. Simplifying the Presentation of Debt Issuance Costs In April 2015, the FASB issued ASU No. 2015-03, Simplifying the Presentation of Debt Issuance Costs (“ASU 2015-03”). The objective of ASU 2015-03 is to simplify the presentation of debt issuance costs by requiring 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. The recognition and measurement guidance for debt issuance costs are not affected by the amendments in ASU 2015-03. ASU 2015-03 became effective for public business entities in annual and interim periods beginning after December 15, 2015 with retroactive application. The Company retrospectively adopted ASU 2015-03 effective January 1, 2016 and the impact on the Company’s consolidated balance sheet at December 31, 2015 was to reduce each of other assets and debt by $5.6 million , respectively, which represented the deferred debt issuance costs previously recorded in other assets and reclassified as an offset to debt. In addition, for the three months ended March 31, 2015 , corporate expense was reduced by $65 thousand and interest expense was increased by $65 thousand to reclassify the amortization of deferred debt issuance costs from corporate expense to interest expense. There was no net impact on the Company’s consolidated statements of operations or financial position as a result of the retrospective adoption of ASU 2015-03. Disclosures for Investments in Certain Entities That Calculate Net Asset Value per Share (or Its Equivalent) In May 2015, the FASB issued ASU No. 2015-07, Disclosures for Investments in Certain Entities That Calculate Net Asset Value per Share (or Its Equivalent) (“ASU 2015-07”). ASU 2015-07 removes the requirement to categorize within the fair value hierarchy all investments for which fair value is measured using the net asset value per share practical expedient. ASU 2015-07 also removes the requirement to make certain disclosures for all investments that are eligible to be measured at fair value using the net asset value per share practical expedient. Rather, those disclosures are limited to investments for which the entity has elected to measure the fair value using that practical expedient. ASU 2015-07 became effective for public business entities for fiscal years beginning after December 15, 2015, and interim periods within those fiscal years. A reporting entity should apply the amendments retrospectively to all periods presented. The retrospective approach requires that an investment for which fair value is measured using the net asset value per share practical expedient be removed from the fair value hierarchy in all periods presented in an entity’s financial statements. Earlier application was permitted. The Company retrospectively adopted ASU 2015-07 effective January 1, 2016; since this update is disclosure-related only, it did not have a material impact on the Company’s statements of operations and financial position. Simplifying the Accounting for Measurement-Period Adjustments In September 2015, the FASB issued ASU No. 2015-16, Simplifying the Accounting for Measurement-Period Adjustments (“ASU 2015-16”). ASU 2015-16 removes the requirement to retrospectively account for adjustments made to provisional amounts recognized in a business combination. Rather, those adjustments are to be recognized by the acquirer in the reporting period in which the adjustment amounts are determined. A reporting entity is also required to disclose, in the reporting period in which the adjustment amounts are recorded, the effect on earnings of changes in depreciation, amortization, or other income effects, as a result of the change to provisional amounts, calculated as if the accounting had been completed at the acquisition date. In addition, the reporting entity would present on the face of the income statement or disclose in the notes the amounts that would have been recorded in previous reporting periods if the adjustment to provisional amounts had been recognized as of the acquisition date. ASU 2015-16 was effective for public business entities in annual and interim periods beginning after December 15, 2015. ASU 2015-16 should be applied prospectively to adjustments for provisional amounts that occur after the effective date, with earlier application permitted for financial statements that have not been issued. The Company adopted ASU 2015-16 effective January 1, 2016 and it did not have a material impact on the Company’s consolidated statements of operations and financial position. RECENTLY ISSUED ACCOUNTING PRONOUNCEMENTS NOT YET ADOPTED Revenue from Contracts with Customers In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (“ASU 2014-09”). ASU 2014-09 provides comprehensive guidance on the recognition of revenue from customers arising from the transfer of goods and services. The core principle of the guidance is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. ASU 2014-09 also provides guidance on accounting for certain contract costs and will also require new disclosures. ASU 2014-09 is effective for public business entities in annual and interim periods beginning after December 15, 2017. Early adoption is permitted. The Company is currently evaluating the impact of this guidance; however, it is not expected to have a material impact on the Company’s consolidated statements of operations and financial position. Disclosures about Short-Duration Contracts In May 2015, the FASB issued ASU No. 2015-09, Disclosures about Short-Duration Contracts (“ASU 2015-09”). ASU 2015-09 requires insurance entities to disclose for annual reporting periods additional information about the liability for unpaid claims and claim adjustment expenses, including: (1) incurred and paid claims development information by accident year, on a net basis, for the number of years for which claims incurred typically remain outstanding, not exceeding 10 years; (2) a reconciliation of incurred and paid claims development information to the aggregate carry amount of the liability for claims and claim adjustment expenses, with separate disclosure of reinsurance recoverable on unpaid claims for each period presented in the statement of financial position; (3) for each accident year presented of incurred claims development information, the total of incurred but not reported liabilities plus expected development on reported claims including in the liability for unpaid claims and claim adjustment expenses, accompanied by a description of the reserving methodologies; (4) for each accident year presented of incurred claims development information, quantitative information about claim frequency accompanied by a qualitative description of methodologies used for determining claim frequency information; and (5) for all claims, the average annual percentage payout of incurred claims by age for the same number of accident years presented in (3) and (4) above. ASU 2015-09 also requires insurance entities to disclose information about significant changes in methodologies and assumptions used to calculate the liability for unpaid claims and claim adjustment expenses, including the reasons for the change and the effects on the financial statements. In addition, ASU 2015-09 requires insurance entities to disclose for annual and interim reporting periods a rollforward of the liability for unpaid claims and claim adjustment expenses. ASU 2015-09 is effective for public business entities in annual periods beginning after December 31, 2015, and interim periods within annual periods beginning after December 31, 2016. Early adoption is permitted. ASU 2015-09 should be applied retrospectively by providing comparative disclosures for each period presented, except for those requirements that apply only to the current period. As this guidance is disclosure-related only, the adoption of this guidance is not expected to have a material impact on the Company’s consolidated statements of operations and financial position. Recognition and Measurement of Financial Assets and Financial Liabilities In January 2016, the FASB issued ASU No. 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities (“ASU 2016-01”). ASU 2016-01 requires equity investments (except those accounted for under the equity method of accounting or those that result in the consolidation of the investee) to be measured at fair value with changes in fair value recognized in net income, simplifies the impairment assessment of equity investments without readily determinable values by requiring a qualitative assessment to identify impairment, eliminates the requirement to disclose the methods and significant assumptions used to estimate the fair value for financial instruments measured at amortized cost, requires the use of the exit price notion when measuring the fair value of financial instruments for disclosure purposes, requires separate presentation in other comprehensive income of the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk when the organization has elected to measure the liabilities in accordance with the fair value option, requires the separate presentation of financial assets and financial liabilities by measurement category and for form of financial asset on the balance sheet or the accompanying notes to the financial statements and clarifies that the reporting organization should evaluate the need for a valuation allowance on a deferred tax asset related to available for sale securities in combination with the organization’s other deferred tax assets. ASU 2016-01 is effective for public business entities in annual and interim periods beginning after December 15, 2017. Earlier adoption is generally not permitted, except for certain specific provisions of ASU 2016-01. The Company is currently evaluating the impact of this guidance; however, it is not expected to have a material impact on the Company’s consolidated statements of operations and financial position.

Investments

Investments	3 Months Ended
	Mar. 31, 2016
Investments [Abstract]
Investments	INVESTMENTS Fixed Maturity Investments Trading The following table summarizes the fair value of fixed maturity investments trading: March 31, December 31, U.S. treasuries $ 2,475,747 $ 2,064,944 Agencies 85,270 137,976 Municipal 564,555 583,282 Non-U.S. government (Sovereign debt) 353,756 334,981 Non-U.S. government-backed corporate 164,724 138,994 Corporate 1,833,825 2,055,323 Agency mortgage-backed 497,943 504,368 Non-agency mortgage-backed 248,609 262,235 Commercial mortgage-backed 535,068 554,625 Asset-backed 131,095 128,277 Total fixed maturity investments trading $ 6,890,592 $ 6,765,005 Fixed Maturity Investments Available For Sale The following table summarizes the amortized cost, fair value and related unrealized gains and losses and non-credit other-than-temporary impairments of fixed maturity investments available for sale: Included in Accumulated Other Comprehensive Income March 31, 2016 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Non-Credit Other-Than- Temporary Impairments (1) Agency mortgage-backed $ 141 $ 9 $ — $ 150 $ — Non-agency mortgage-backed 6,627 1,336 — 7,963 525 Commercial mortgage-backed 5,616 256 — 5,872 — Total fixed maturity investments available for sale $ 12,384 $ 1,601 $ — $ 13,985 $ 525 Included in Accumulated Other Comprehensive Income December 31, 2015 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Non-Credit Other-Than- Temporary Impairments (1) Agency mortgage-backed $ 143 $ 7 $ — $ 150 $ — Non-agency mortgage-backed 7,005 1,523 — 8,528 550 Commercial mortgage-backed 6,578 293 — 6,871 — Asset-backed 2,217 47 — 2,264 — Total fixed maturity investments available for sale $ 15,943 $ 1,870 $ — $ 17,813 $ 550 (1) Represents the non-credit component of other-than-temporary impairments recognized in accumulated other comprehensive income adjusted for subsequent sales of securities. It does not include the change in fair value subsequent to the impairment measurement date. Contractual maturities of fixed maturity investments are described in the following table. Expected maturities will differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. Trading Available for Sale Total Fixed Maturity Investments March 31, 2016 Amortized Cost Fair Value Amortized Cost Fair Value Amortized Cost Fair Value Due in less than one year $ 217,858 $ 215,975 $ — $ — $ 217,858 $ 215,975 Due after one through five years 4,002,809 4,011,832 — — 4,002,809 4,011,832 Due after five through ten years 1,028,014 1,035,877 — — 1,028,014 1,035,877 Due after ten years 207,716 214,193 — — 207,716 214,193 Mortgage-backed 1,270,780 1,281,620 12,384 13,985 1,283,164 1,295,605 Asset-backed 131,077 131,095 — — 131,077 131,095 Total $ 6,858,254 $ 6,890,592 $ 12,384 $ 13,985 $ 6,870,638 $ 6,904,577 Equity Investments Trading The following table summarizes the fair value of equity investments trading: March 31, December 31, Financials $ 190,916 $ 193,716 Communications and technology 47,751 65,833 Industrial, utilities and energy 37,956 51,168 Consumer 29,997 40,918 Healthcare 24,374 36,148 Basic materials 4,515 6,094 Total $ 335,509 $ 393,877 Pledged Investments At March 31, 2016 , $2.4 billion of cash and investments at fair value were on deposit with, or in trust accounts for the benefit of various counterparties, including with respect to the Company’s letter of credit facilities ( December 31, 2015 - $2.5 billion ). Of this amount, $0.7 billion is on deposit with, or in trust accounts for the benefit of, U.S. state regulatory authorities ( December 31, 2015 - $0.7 billion ). Reverse Repurchase Agreements At March 31, 2016 , the Company held $40.3 million ( December 31, 2015 - $26.2 million ) of reverse repurchase agreements. These loans are fully collateralized, are generally outstanding for a short period of time and are presented on a gross basis as part of short term investments on the Company’s consolidated balance sheets. The required collateral for these loans typically include high-quality, readily marketable instruments at a minimum amount of 102% of the loan principal. Upon maturity, the Company receives principal and interest income. Net Investment Income The components of net investment income are as follows: Three months ended March 31, March 31, Fixed maturity investments $ 36,006 $ 25,939 Short term investments 1,000 197 Equity investments 1,663 2,604 Other investments Private equity investments (9,358 ) 10,413 Other 3,309 3,508 Cash and cash equivalents 129 148 32,749 42,809 Investment expenses (3,886 ) (3,102 ) Net investment income $ 28,863 $ 39,707 Net Realized and Unrealized Gains on Investments Net realized and unrealized gains on investments are as follows: Three months ended March 31, March 31, Gross realized gains $ 17,750 $ 21,532 Gross realized losses (14,665 ) (4,871 ) Net realized gains on fixed maturity investments 3,085 16,661 Net unrealized gains on fixed maturity investments trading 85,465 25,972 Net realized and unrealized losses on investments-related derivatives (19,449 ) (4,208 ) Net realized (losses) gains on equity investments trading (818 ) 7,481 Net unrealized losses on equity investments trading (6,630 ) (4,157 ) Net realized and unrealized gains on investments $ 61,653 $ 41,749 The Company did not have any fixed maturity investments available for sale in an unrealized loss position at March 31, 2016 or December 31, 2015 .

Fair Value Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2016
Fair Value Disclosures [Abstract]
Fair Value Measurements	FAIR VALUE MEASUREMENTS The use of fair value to measure certain assets and liabilities with resulting unrealized gains or losses is pervasive within the Company’s consolidated financial statements. Fair value is defined under accounting guidance currently applicable to the Company to be the price that would be received upon the sale of an asset or paid to transfer a liability in an orderly transaction between open market participants at the measurement date. The Company recognizes the change in unrealized gains and losses arising from changes in fair value in its consolidated statements of operations, with the exception of changes in unrealized gains and losses on its fixed maturity investments available for sale, which are recognized as a component of accumulated other comprehensive income in shareholders’ equity. FASB ASC Topic Fair Value Measurements and Disclosures prescribes a fair value hierarchy that prioritizes the inputs to the respective valuation techniques used to measure fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1) and the lowest priority to valuation techniques that use at least one significant input that is unobservable (Level 3). The three levels of the fair value hierarchy are described below: • Fair values determined by Level 1 inputs utilize unadjusted quoted prices obtained from active markets for identical assets or liabilities for which the Company has access. The fair value is determined by multiplying the quoted price by the quantity held by the Company; • Fair values determined by Level 2 inputs utilize inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly. Level 2 inputs include quoted prices for similar assets and liabilities in active markets, and inputs other than quoted prices that are observable for the asset or liability, such as interest rates and yield curves that are observable at commonly quoted intervals, broker quotes and certain pricing indices; and • Level 3 inputs are based all or in part on significant unobservable inputs for the asset or liability, and include situations where there is little, if any, market activity for the asset or liability. In these cases, significant management assumptions can be used to establish management’s best estimate of the assumptions used by other market participants in determining the fair value of the asset or liability. In certain cases, the inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, the level in the fair value hierarchy within which the fair value measurement in its entirety falls has been determined based on the lowest level input that is significant to the fair value measurement of the asset or liability. The Company’s assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment, and the Company considers factors specific to the asset or liability. In order to determine if a market is active or inactive for a security, the Company considers a number of factors, including, but not limited to, the spread between what a seller is asking for a security and what a buyer is bidding for the same security, the volume of trading activity for the security in question, the price of the security compared to its par value (for fixed maturity investments), and other factors that may be indicative of market activity. There have been no material changes in the Company’s valuation techniques, nor have there been any transfers between Level 1 and Level 2, or Level 2 and 3 during the period represented by these consolidated financial statements. Below is a summary of the assets and liabilities that are measured at fair value on a recurring basis and also represents the carrying amount on the Company’s consolidated balance sheets: At March 31, 2016 Total Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Fixed maturity investments U.S. treasuries $ 2,475,747 $ 2,475,747 $ — $ — Agencies 85,270 — 85,270 — Municipal 564,555 — 564,555 — Non-U.S. government (Sovereign debt) 353,756 — 353,756 — Non-U.S. government-backed corporate 164,724 — 164,724 — Corporate 1,833,825 — 1,826,325 7,500 Agency mortgage-backed 498,093 — 498,093 — Non-agency mortgage-backed 256,572 — 256,572 — Commercial mortgage-backed 540,940 — 540,940 — Asset-backed 131,095 — 131,095 — Total fixed maturity investments 6,904,577 2,475,747 4,421,330 7,500 Short term investments 1,171,523 — 1,171,523 — Equity investments trading 335,509 335,509 — — Other investments Catastrophe bonds 272,397 — 272,397 — Private equity partnerships (1) 200,465 — — — Senior secured bank loan fund (1) 22,334 — — — Hedge funds (1) 1,704 — — — Total other investments 496,900 — 272,397 — Other assets and (liabilities) Assumed and ceded (re)insurance contracts (2) (4,724 ) — — (4,724 ) Derivatives (3) (5,908 ) (1,490 ) (4,418 ) — Other (1,303 ) — (1,303 ) — Total other assets and (liabilities) (11,935 ) (1,490 ) (5,721 ) (4,724 ) $ 8,896,574 $ 2,809,766 $ 5,859,529 $ 2,776 (1) Certain investments that are measured at fair value using the net asset value per share (or its equivalent) practical expedient have not been classified in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to the amounts presented in the consolidated balance sheet. (2) Included in assumed and ceded (re)insurance contracts at March 31, 2016 are $2.8 million and $7.5 million of other assets and other liabilities, respectively. (3) See “Note 11 . Derivative Instruments” for additional information related to the fair value by type of contract, of derivatives entered into by the Company. At December 31, 2015 Total Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Fixed maturity investments U.S. treasuries $ 2,064,944 $ 2,064,944 $ — $ — Agencies 137,976 — 137,976 — Municipal 583,282 — 583,282 — Non-U.S. government (Sovereign debt) 334,981 — 334,981 — Non-U.S. government-backed corporate 138,994 — 138,994 — Corporate 2,055,323 — 2,047,705 7,618 Agency mortgage-backed 504,518 — 504,518 — Non-agency mortgage-backed 270,763 — 270,763 — Commercial mortgage-backed 561,496 — 561,496 — Asset-backed 130,541 — 130,541 — Total fixed maturity investments 6,782,818 2,064,944 4,710,256 7,618 Short term investments 1,208,401 — 1,208,401 — Equity investments trading 393,877 393,877 — — Other investments Catastrophe bonds 241,253 — 241,253 — Private equity partnerships (1) 214,848 — — — Senior secured bank loan fund (1) 23,231 — — — Hedge funds (1) 2,289 — — — Total other investments 481,621 — 241,253 — Other assets and (liabilities) Assumed and ceded (re)insurance contracts (2) (5,899 ) — — (5,899 ) Derivatives (3) 1,486 (1,234 ) 2,720 — Other (12,320 ) — (12,320 ) — Total other assets and (liabilities) (16,733 ) (1,234 ) (9,600 ) (5,899 ) $ 8,849,984 $ 2,457,587 $ 6,150,310 $ 1,719 (1) Certain investments that are measured at fair value using the net asset value per share (or its equivalent) practical expedient have not been classified in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to the amounts presented in the consolidated balance sheet. (2) Included in assumed and ceded (re)insurance contracts at December 31, 2015 are $3.5 million and $9.4 million of other assets and other liabilities, respectively. (3) See “Note 11 . Derivative Instruments” for additional information related to the fair value by type of contract, of derivatives entered into by the Company. Level 1 and Level 2 Assets and Liabilities Measured at Fair Value Fixed Maturity Investments Fixed maturity investments included in Level 1 consist of the Company’s investments in U.S. treasuries. Fixed maturity investments included in Level 2 are agencies, municipal, non-U.S. government, non-U.S. government-backed corporate, corporate, agency mortgage-backed, non-agency mortgage-backed, commercial mortgage-backed and asset-backed. The Company’s fixed maturity investments are primarily priced using pricing services, such as index providers and pricing vendors, as well as broker quotations. In general, the pricing vendors provide pricing for a high volume of liquid securities that are actively traded. For securities that do not trade on an exchange, the pricing services generally utilize market data and other observable inputs in matrix pricing models to determine month end prices. Observable inputs include benchmark yields, reported trades, broker-dealer quotes, issuer spreads, bids, offers, reference data and industry and economic events. Index pricing generally relies on market traders as the primary source for pricing, however models are also utilized to provide prices for all index eligible securities. The models use a variety of observable inputs such as benchmark yields, transactional data, dealer runs, broker-dealer quotes and corporate actions. Prices are generally verified using third party data. Securities which are priced by an index provider are generally included in the index. In general, broker-dealers value securities through their trading desks based on observable inputs. The methodologies include mapping securities based on trade data, bids or offers, observed spreads, and performance on newly issued securities. Broker-dealers also determine valuations by observing secondary trading of similar securities. Prices obtained from broker quotations are considered non-binding, however they are based on observable inputs and by observing secondary trading of similar securities obtained from active, non-distressed markets. The Company considers these Level 2 inputs as they are corroborated with other market observable inputs. The techniques generally used to determine the fair value of the Company’s fixed maturity investments are detailed below by asset class. U.S. treasuries Level 1 - At March 31, 2016 , the Company’s U.S. treasuries fixed maturity investments were primarily priced by pricing services and had a weighted average effective yield of 0.9% and a weighted average credit quality of AA ( December 31, 2015 - 1.3% and AA, respectively). When pricing these securities, the pricing services utilize daily data from many real time market sources, including active broker dealers. Certain data sources are regularly reviewed for accuracy to attempt to ensure the most reliable price source is used for each issue and maturity date. Agencies Level 2 - At March 31, 2016 , the Company’s agency fixed maturity investments had a weighted average effective yield of 1.5% and a weighted average credit quality of AA ( December 31, 2015 - 1.7% and AA, respectively). The issuers of the Company’s agency fixed maturity investments primarily consist of the Federal National Mortgage Association, the Federal Home Loan Mortgage Corporation and other agencies. Fixed maturity investments included in agencies are primarily priced by pricing services. When evaluating these securities, the pricing services gather information from market sources and integrate other observations from markets and sector news. Evaluations are updated by obtaining broker dealer quotes and other market information including actual trade volumes, when available. The fair value of each security is individually computed using analytical models which incorporate option adjusted spreads and other daily interest rate data. Municipal Level 2 - At March 31, 2016 , the Company’s municipal fixed maturity investments had a weighted average effective yield of 1.8% and a weighted average credit quality of AA ( December 31, 2015 - 2.0% and AA, respectively). The Company’s municipal fixed maturity investments are primarily priced by pricing services. When evaluating these securities, the pricing services gather information regarding the security from third party sources such as trustees, paying agents or issuers. Evaluations are updated by obtaining broker dealer quotes and other market information including actual trade volumes, when available. The pricing services also consider the specific terms and conditions of the securities, including any specific features which may influence risk. In certain instances, securities are individually evaluated using a spread over widely accepted market benchmarks. Non-U.S. government (Sovereign debt) Level 2 - At March 31, 2016 , the Company’s non-U.S. government fixed maturity investments had a weighted average effective yield of 1.0% and a weighted average credit quality of AA ( December 31, 2015 - 1.4% and AA, respectively). The issuers of securities in this sector are non-U.S. governments and their respective agencies as well as supranational organizations. Securities held in these sectors are primarily priced by pricing services that employ proprietary discounted cash flow models to value the securities. Key quantitative inputs for these models are daily observed benchmark curves for treasury, swap and high issuance credits. The pricing services then apply a credit spread for each security which is developed by in-depth and real time market analysis. For securities in which trade volume is low, the pricing services utilize data from more frequently traded securities with similar attributes. These models may also be supplemented by daily market and credit research for international markets. Non-U.S. government-backed corporate Level 2 - At March 31, 2016 , the Company’s non-U.S. government-backed corporate fixed maturity investments had a weighted average effective yield of 1.1% and a weighted average credit quality of AAA ( December 31, 2015 - 1.3% and AA, respectively). Non-U.S. government-backed fixed maturity investments are primarily priced by pricing services that employ proprietary discounted cash flow models to value the securities. Key quantitative inputs for these models are daily observed benchmark curves for treasury, swap and high issuance credits. The pricing services then apply a credit spread to the respective curve for each security which is developed by in-depth and real time market analysis. For securities in which trade volume is low, the pricing services utilize data from more frequently traded securities with similar attributes. These models may also be supplemented by daily market and credit research for international markets. Corporate Level 2 - At March 31, 2016 , the Company’s corporate fixed maturity investments principally consisted of U.S. and international corporations and had a weighted average effective yield of 3.9% and a weighted average credit quality of BBB ( December 31, 2015 - 3.8% and BBB, respectively). The Company’s corporate fixed maturity investments are primarily priced by pricing services. When evaluating these securities, the pricing services gather information from market sources regarding the issuer of the security and obtain credit data, as well as other observations, from markets and sector news. Evaluations are updated by obtaining broker dealer quotes and other market information including actual trade volumes, when available. The pricing services also consider the specific terms and conditions of the securities, including any specific features which may influence risk. In certain instances, securities are individually evaluated using a spread which is added to the U.S. treasury curve or a security specific swap curve as appropriate. Agency mortgage-backed Level 2 - At March 31, 2016 , the Company’s agency mortgage-backed fixed maturity investments included agency residential mortgage-backed securities with a weighted average effective yield of 2.3% , a weighted average credit quality of AA and a weighted average life of 5.1 years ( December 31, 2015 - 2.7% , AA and 6.1 years, respectively). The Company’s agency mortgage-backed fixed maturity investments are primarily priced by pricing services using a mortgage pool specific model which utilizes daily inputs from the active to be announced market which is very liquid, as well as the U.S. treasury market. The model also utilizes additional information, such as the weighted average maturity, weighted average coupon and other available pool level data which is provided by the sponsoring agency. Valuations are also corroborated with daily active market quotes. Non-agency mortgage-backed Level 2 - The Company’s non-agency mortgage-backed fixed maturity investments include non-agency prime residential mortgage-backed and non-agency Alt-A fixed maturity investments. The Company has no fixed maturity investments classified as sub-prime held in its fixed maturity investments portfolio. At March 31, 2016 , the Company’s non-agency prime residential mortgage-backed fixed maturity investments had a weighted average effective yield of 4.5% , a weighted average credit quality of non-investment grade, and a weighted average life of 4.1 years ( December 31, 2015 - 3.8% , non-investment grade and 4.3 years, respectively). The Company’s non-agency Alt-A fixed maturity investments held at March 31, 2016 had a weighted average effective yield of 5.5% , a weighted average credit quality of non-investment grade and a weighted average life of 5.4 years ( December 31, 2015 - 4.7% , non-investment grade and 5.4 years, respectively). Securities held in these sectors are primarily priced by pricing services using an option adjusted spread model or other relevant models, which principally utilize inputs including benchmark yields, available trade information or broker quotes, and issuer spreads. The pricing services also review collateral prepayment speeds, loss severity and delinquencies among other collateral performance indicators for the securities valuation, when applicable. Commercial mortgage-backed Level 2 - At March 31, 2016 , the Company’s commercial mortgage-backed fixed maturity investments had a weighted average effective yield of 3.0% , a weighted average credit quality of AAA, and a weighted average life of 3.8 years ( December 31, 2015 - 2.9% , AAA and 3.7 years, respectively). Securities held in these sectors are primarily priced by pricing services. The pricing services apply dealer quotes and other available trade information such as bids and offers, prepayment speeds which may be adjusted for the underlying collateral or current price data, the U.S. treasury curve and swap curve as well as cash settlement. The pricing services discount the expected cash flows for each security held in this sector using a spread adjusted benchmark yield based on the characteristics of the security. Asset-backed Level 2 - At March 31, 2016 , the Company’s asset-backed fixed maturity investments had a weighted average effective yield of 2.1% , a weighted average credit quality of AAA and a weighted average life of 2.5 years ( December 31, 2015 - 2.1% , AAA and 2.5 years, respectively). The underlying collateral for the Company’s asset-backed fixed maturity investments primarily consists of student loans, credit card receivables, auto loans and other receivables. Securities held in these sectors are primarily priced by pricing services. The pricing services apply dealer quotes and other available trade information such as bids and offers, prepayment speeds which may be adjusted for the underlying collateral or current price data, the U.S. treasury curve and swap curve as well as cash settlement. The pricing services determine the expected cash flows for each security held in this sector using historical prepayment and default projections for the underlying collateral and current market data. In addition, a spread is applied to the relevant benchmark and used to discount the cash flows noted above to determine the fair value of the securities held in this sector. Short Term Investments Level 2 - The fair value of the Company’s portfolio of short term investments is generally determined using amortized cost which approximates fair value and, in certain cases, in a manner similar to the Company’s fixed maturity investments noted above. Equity Investments, Classified as Trading Level 1 - The fair value of the Company’s portfolio of equity investments, classified as trading is primarily priced by pricing services, reflecting the closing price quoted for the final trading day of the period. When pricing these securities, the pricing services utilize daily data from many real time market sources, including applicable securities exchanges. All data sources are regularly reviewed for accuracy to attempt to ensure the most reliable price source was used for each security. Other investments Catastrophe bonds Level 2 - The Company’s other investments include investments in catastrophe bonds which are recorded at fair value based on broker or underwriter bid indications. Other assets and liabilities Derivatives Level 1 and Level 2 - Other assets and liabilities include certain derivatives entered into by the Company. The fair value of these transactions includes certain exchange traded foreign currency forward contracts which are considered Level 1, and certain credit derivatives, determined using standard industry valuation models and considered Level 2, as the inputs to the valuation model are based on observable market inputs, including credit spreads, credit ratings of the underlying referenced security, the risk free rate and the contract term. Other Level 2 - The liabilities measured at fair value and included in Level 2 at March 31, 2016 of $1.3 million are comprised of cash settled restricted stock units (“CSRSU”) that form part of the Company’s compensation program. The fair value of the Company’s CSRSUs is determined using observable exchange traded prices for the Company’s common shares. Level 3 Assets and Liabilities Measured at Fair Value Below is a summary of quantitative information regarding the significant observable and unobservable inputs (Level 3) used in determining the fair value of assets and liabilities measured at fair value on a recurring basis: At March 31, 2016 Fair Value (Level 3) Valuation Technique Unobservable (U) and Observable (O) Inputs Low High Weighted Average or Actual Fixed maturity investments Corporate $ 7,500 See below See below n/a n/a n/a Total fixed maturity investments 7,500 Other assets and (liabilities) Assumed and ceded (re)insurance contracts (1,164 ) Internal valuation model Bond price (U) $ 94.39 $ 99.91 $ 97.32 Liquidity discount (U) n/a n/a 1.3 % Assumed and ceded (re)insurance contracts (3,560 ) Internal valuation model Net undiscounted cash flows (U) n/a n/a $ (10,725 ) Expected loss ratio (U) n/a n/a 13.0 % Net acquisition expense ratio (O) n/a n/a 19.0 % Contract period (O) 0.5 years 3.0 years 2.2 years Discount rate (U) n/a n/a 0.9 % Total assumed and ceded (re)insurance contracts (4,724 ) Total other assets and (liabilities) (4,724 ) $ 2,776 Fixed Maturity Investments Corporate Level 3 - Included in the Company’s corporate fixed maturity investments is an investment in the preferred equity of an insurance holding company which had a fair value of $7.5 million at March 31, 2016 . The Company intends to hold this investment until maturity, which is June 1, 2016, and therefore, given the short time frame until maturity, the Company determined that the par value of the investment approximated fair value at March 31, 2016 . Other assets and liabilities Assumed and ceded (re)insurance contracts Level 3 - At March 31, 2016 , the Company had a $1.2 million net liability related to an assumed reinsurance contract accounted for at fair value, with the fair value obtained through the use of an internal valuation model. The inputs to the internal valuation model are principally based on indicative pricing obtained from independent brokers and pricing vendors for similarly structured marketable securities. The most significant unobservable inputs include prices for similar marketable securities and a liquidity premium. The Company considers the prices for similar securities to be unobservable, as there is little, if any market activity for these similar assets. In addition, the Company has estimated a liquidity premium that would be required if the Company attempted to effectively exit its position by executing a short sale of these securities. Generally, an increase in the prices for similar marketable securities or a decrease in the liquidity premium would result in an increase in the expected profit and ultimate fair value of this assumed reinsurance contract. Level 3 - At March 31, 2016 , the Company had a $3.6 million net liability related to assumed and ceded (re)insurance contracts accounted for at fair value, with the fair value obtained through the use of an internal valuation model. The inputs to the internal valuation model are principally based on proprietary data as observable market inputs are generally not available. The most significant unobservable inputs include the assumed and ceded expected net cash flows related to the contracts, including the expected premium, acquisition expenses and losses; the expected loss ratio and the relevant discount rate used to present value the net cash flows. The contract period and acquisition expense ratio are considered observable input as each is defined in the contract. Generally, an increase in the net expected cash flows and expected term of the contract and a decrease in the discount rate, expected loss ratio or acquisition expense ratio, would result in an increase in the expected profit and ultimate fair value of these assumed and ceded (re)insurance contracts. Below is a reconciliation of the beginning and ending balances, for the periods shown, of assets and liabilities measured at fair value on a recurring basis using Level 3 inputs. Interest and dividend income are included in net investment income and are excluded from the reconciliation. Fair Value Measurements Using Significant Unobservable Inputs (Level 3) Fixed maturity investments trading Other assets and (liabilities) Total Balance - January 1, 2016 $ 7,618 $ (5,899 ) $ 1,719 Total unrealized (losses) gains Included in net investment income (118 ) — (118 ) Total realized gains Included in other income — 1,700 1,700 Purchases — (525 ) (525 ) Balance - March 31, 2016 $ 7,500 $ (4,724 ) $ 2,776 Change in unrealized gains for the period included in earnings for assets held at the end of the period included in net investment income $ (118 ) $ — $ (118 ) Fair Value Measurements Using Significant Unobservable Inputs (Level 3) Fixed maturity investments trading Other assets and (liabilities) Total Balance - January 1, 2015 $ 15,660 $ (8,634 ) $ 7,026 Total unrealized (losses) gains Included in net investment income (186 ) 160 (26 ) Total realized gains Included in other income — 1,316 1,316 Total foreign exchange (losses) gains — 6 6 Purchases — 80,421 80,421 Balance - March 31, 2015 $ 15,474 $ 73,269 $ 88,743 Change in unrealized gains for the period included in earnings for assets held at the end of the period included in net investment income $ (186 ) $ 160 $ (26 ) Financial Instruments Disclosed, But Not Carried, at Fair Value The Company uses various financial instruments in the normal course of its business. The Company’s insurance contracts are excluded from the fair value of financial instruments accounting guidance, unless the Company elects the fair value option, and therefore, are not included in the amounts discussed herein. The carrying values of cash and cash equivalents, accrued investment income, receivables for investments sold, certain other assets, payables for investments purchased, certain other liabilities, and other financial instruments not included herein approximated their fair values. Debt Included on the Company’s consolidated balance sheet at March 31, 2016 were debt obligations of $957.5 million ( December 31, 2015 - $960.5 million ). At March 31, 2016 , the fair value of the Company’s debt obligations was $992.5 million ( December 31, 2015 – $973.3 million ). The fair value of the Company’s debt obligations is determined using indicative market pricing obtained from third-party service providers, which the Company considers Level 2 in the fair value hierarchy. There have been no changes during the period in the Company’s valuation technique used to determine the fair value of the Company’s debt obligations. The Fair Value Option for Financial Assets and Financial Liabilities The Company has elected to account for certain financial assets and financial liabilities at fair value using the guidance under FASB ASC Topic Financial Instruments as the Company believes it represents the most meaningful measurement basis for these assets and liabilities. Below is a summary of the balances the Company has elected to account for at fair value: March 31, December 31, Other investments $ 496,900 $ 481,621 Other assets $ 2,754 $ 3,463 Other liabilities $ 7,478 $ 9,362 Included in net investment income for the three months ended March 31, 2016 was net unrealized losses of $15.4 million related to the changes in fair value of other investments ( 2015 – gains of $4.9 million ). Net unrealized losses related to the changes in the fair value of other assets and liabilities recorded in other income for the three months ended March 31, 2016 was $Nil ( 2015 - $Nil ). Measuring the Fair Value of Other Investments Using Net Asset Valuations The table below shows the Company’s portfolio of other investments measured using net asset valuations as a practical expedient: At March 31, 2016 Fair Value Unfunded Redemption Frequency Redemption Redemption Private equity partnerships $ 200,465 $ 241,641 See below See below See below Senior secured bank loan fund 22,334 2,330 See below See below See below Hedge funds 1,704 — See below See below See below Total other investments measured using net asset valuations $ 224,503 $ 243,971 Private equity partnerships – The Company’s investments in private equity partnerships included alternative asset limited partnerships (or similar corporate structures) that invest in certain private equity asset classes, including U.S. and global leveraged buyouts, mezzanine investments, distressed securities, real estate, and oil, gas and power. The Company generally has no right to redeem its interest in any of these private equity partnerships in advance of dissolution of the applicable private equity partnership. Instead, the nature of these investments is that distributions are received by the Company in connection with the liquidation of the underlying assets of the respective private equity partnership. It is estimated that the majority of the underlying assets of the limited partnerships would liquidate over 7 to 10 years from inception of the respective limited partnership. Senior secured bank loan fund – At March 31, 2016 , the Company had $22.3 million invested in a closed end fund which invests primarily in loans. The Company has no right to redeem its investment in this fund. It is estimated that the majority of the underlying assets in this closed end fund would liquidate over 4 to 5 years from inception of the fund. Hedge funds – The Company invests in hedge funds that pursue multiple strategies. The Company’s investments in hedge funds at March 31, 2016 were $1.7 million of so called “side pocket” investments which are not redeemable at the option of the shareholder. The Company will retain its interest in the side pocket investments referred to above, until the underlying investments attributable to such side pockets are liquidated, realized or deemed realized at the discretion of the fund manager.

Reinsurance

Reinsurance	3 Months Ended
	Mar. 31, 2016
Supplemental Schedule of Reinsurance Premiums for Insurance Companies [Abstract]
Reinsurance	REINSURANCE The Company purchases reinsurance and other protection to manage its risk portfolio and to reduce its exposure to large losses. The Company currently has in place contracts that provide for recovery of a portion of certain claims and claim expenses, generally in excess of various retentions or on a proportional basis. In addition to loss recoveries, certain of the Company’s ceded reinsurance contracts provide for recoveries of additional premiums, for reinstatement premiums and for lost no-claims bonuses, which are incurred when losses are ceded to other reinsurance contracts. The Company remains liable to the extent that any reinsurance company fails to meet its obligations. The following table sets forth the effect of reinsurance and retrocessional activity on premiums written and earned and on net claims and claim expenses incurred: Three months ended March 31, 2016 March 31, 2015 Premiums written Direct $ 43,176 $ 30,813 Assumed 818,957 612,765 Ceded (350,458 ) (239,543 ) Net premiums written $ 511,675 $ 404,035 Premiums earned Direct $ 33,140 $ 22,901 Assumed 456,641 382,603 Ceded (136,175 ) (108,744 ) Net premiums earned $ 353,606 $ 296,760 Claims and claim expenses Gross claims and claim expenses incurred $ 161,998 $ 88,995 Claims and claim expenses recovered (35,393 ) (12,142 ) Net claims and claim expenses incurred $ 126,605 $ 76,853

Noncontrolling Interests

Noncontrolling Interests	3 Months Ended
	Mar. 31, 2016
Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest [Abstract]
Noncontrolling Interests	NONCONTROLLING INTERESTS A summary of the Company’s redeemable noncontrolling interests on its consolidated balance sheets is set forth below: March 31, December 31, 2015 Redeemable noncontrolling interest - DaVinciRe $ 926,141 $ 930,955 Redeemable noncontrolling interest - Medici 155,196 115,009 Redeemable noncontrolling interest $ 1,081,337 $ 1,045,964 A summary of the Company’s redeemable noncontrolling interests on its consolidated statements of operations set forth below: Three months ended March 31, March 31, Redeemable noncontrolling interest - DaVinciRe $ 42,964 $ 38,326 Redeemable noncontrolling interest - Medici 1,627 1,336 Net income attributable to redeemable noncontrolling interests $ 44,591 $ 39,662 Redeemable Noncontrolling Interest – DaVinciRe In October 2001, the Company formed DaVinciRe and DaVinci with other equity investors. RenaissanceRe owns a noncontrolling economic interest in DaVinciRe; however, because RenaissanceRe controls a majority of DaVinciRe’s outstanding voting rights, the consolidated financial statements of DaVinciRe are included in the consolidated financial statements of the Company. The portion of DaVinciRe’s earnings owned by third parties is recorded in the consolidated statements of operations as net income attributable to redeemable noncontrolling interests. The Company’s noncontrolling economic ownership in DaVinciRe was 24.0% at March 31, 2016 ( December 31, 2015 - 26.3% ). DaVinciRe shareholders are party to a shareholders agreement (the “Shareholders Agreement”) which provides DaVinciRe shareholders, excluding RenaissanceRe, with certain redemption rights that enable each shareholder to notify DaVinciRe of such shareholder’s desire for DaVinciRe to repurchase up to half of such shareholder’s initial aggregate number of shares held, subject to certain limitations, such as limiting the aggregate of all share repurchase requests to 25% of DaVinciRe’s capital in any given year and satisfying all applicable regulatory requirements. If total shareholder requests exceed 25% of DaVinciRe’s capital, the number of shares repurchased will be reduced among the requesting shareholders pro-rata, based on the amounts desired to be repurchased. Shareholders desiring to have DaVinci repurchase their shares must notify DaVinciRe before March 1 of each year. The repurchase price will be based on GAAP book value as of the end of the year in which the shareholder notice is given, and the repurchase will be effective as of January 1 of the following year. The repurchase price is generally subject to a true-up for potential development on outstanding loss reserves after settlement of all claims relating to the applicable years. 2015 During January 2015, DaVinciRe redeemed a portion of its outstanding shares from certain existing DaVinciRe shareholders, including RenaissanceRe. The net redemption as a result of these transactions was $225.0 million . In connection with the redemption, DaVinciRe retained a $22.5 million holdback. The Company’s noncontrolling economic ownership in DaVinciRe subsequent to these transactions was 26.3% , effective January 1, 2015. 2016 During January 2016, DaVinciRe redeemed a portion of its outstanding shares from certain existing DaVinciRe shareholders, including RenaissanceRe, while new DaVinciRe shareholders purchased shares in DaVinciRe from RenaissanceRe. The net redemption as a result of these transactions was $100.0 million . In connection with the redemption, DaVinciRe retained a $10.0 million holdback. The Company’s noncontrolling economic ownership in DaVinciRe subsequent to these transactions was 24.0% , effective January 1, 2016. The Company expects its noncontrolling economic ownership in DaVinciRe to fluctuate over time. The activity in redeemable noncontrolling interest – DaVinciRe is detailed in the table below: Three months ended March 31, March 31, Beginning balance $ 930,955 $ 1,037,306 Redemption of shares from redeemable noncontrolling interest (90,818 ) (207,898 ) Sale of shares to redeemable noncontrolling interests 43,040 — Net income attributable to redeemable noncontrolling interest 42,964 38,326 Ending balance $ 926,141 $ 867,734 Redeemable Noncontrolling Interest - RenaissanceRe Medici Fund Ltd. (“Medici”) Medici is an exempted company incorporated under the laws of Bermuda and its objective is to seek to invest substantially all of its assets in various insurance-based investment instruments that have returns primarily tied to property catastrophe risk. RenaissanceRe owns a noncontrolling economic interest in Medici; however, because RenaissanceRe controls all of Medici’s outstanding voting rights, the financial statements of Medici are included in the consolidated financial statements of the Company. The portion of Medici’s earnings owned by third parties is recorded in the consolidated statements of operations as net income attributable to redeemable noncontrolling interests. Any shareholder may redeem all or any portion of its shares as of the last day of any calendar month, upon at least 30 calendar days’ prior irrevocable written notice to Medici. As the participating, non-voting common shares of Medici have redemption features which are outside the control of the issuer, the portion related to the redeemable noncontrolling interest in Medici is recorded in the mezzanine section of the consolidated balance sheets of the Company. 2015 During 2015, third-party investors subscribed for and redeemed an aggregate of $36.1 million and $20.1 million , respectively, of the participating, non-voting common shares of Medici. As a result of these net subscriptions, the Company’s economic ownership in Medici was 46.1% , effective December 31, 2015 . 2016 During the three months ended March 31, 2016 , third-party investors subscribed for and redeemed an aggregate of $39.5 million and $0.9 million , respectively, of the participating, non-voting common shares of Medici. As a result of these net subscriptions, the Company’s economic ownership in Medici was 39.0% at March 31, 2016 . The Company expects its ownership in Medici to fluctuate over time. The activity in redeemable noncontrolling interest – Medici is detailed in the table below: Three months ended March 31, March 31, Beginning balance $ 115,009 $ 94,402 Redemption of shares from redeemable noncontrolling interest (940 ) (14,684 ) Sale of shares to redeemable noncontrolling interests 39,500 19,643 Net income attributable to redeemable noncontrolling interest 1,627 1,336 Ending balance $ 155,196 $ 100,697

Variable Interest Entities

Variable Interest Entities	3 Months Ended
	Mar. 31, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Variable Interest Entities	VARIABLE INTEREST ENTITIES Upsilon RFO Effective January 1, 2013, the Company formed and launched Upsilon RFO, a managed joint venture, and a Bermuda domiciled SPI, to provide additional capacity to the worldwide aggregate and per-occurrence retrocessional property catastrophe excess of loss market. The shareholders (other than the Class A shareholder) participate in substantially all of the profits or losses of Upsilon RFO while their shares remain outstanding. The shareholders (other than the Class A shareholder) indemnify Upsilon RFO against losses relating to insurance risk and therefore these shares have been accounted for as prospective reinsurance under FASB ASC Topic Financial Services - Insurance . Upsilon RFO is considered a VIE as it has insufficient equity capital to finance its activities without additional financial support. The Company is the primary beneficiary of Upsilon RFO as it has the power over the activities that most significantly impact the economic performance of Upsilon RFO and has the obligation to absorb expected losses and the right to receive expected benefits that could be significant to Upsilon RFO, in accordance with the accounting guidance. As a result, the Company consolidates Upsilon RFO and all significant inter-company transactions have been eliminated. Other than its equity investment in Upsilon RFO, the Company has not provided financial or other support to Upsilon RFO that it was not contractually required to provide. 2015 During 2015, Upsilon RFO returned capital to all of the investors who participated in risks incepting during 2014, including the Company. The total amount of capital agreed to be returned was $420.2 million , including $132.3 million to the Company, with $418.5 million of this having been repaid to date, including $131.6 million to the Company. In conjunction with risks incepting during 2015, $153.7 million of Upsilon RFO non-voting preference shares were issued to unaffiliated third-party investors through their investment in Upsilon Fund. Additionally, $42.5 million of the non-voting preference shares were issued to the Company, representing a 21.7% participation in the risks assumed by Upsilon RFO incepting during 2015. 2016 Effective January 1, 2016, Upsilon RFO returned capital to all of the investors who participated in risks incepting on January 1, 2015 and expiring on December 31, 2015, including the Company. The total amount of capital available to be returned was $200.5 million , including $41.3 million to the Company. In conjunction with risks incepting January 1, 2016, $62.5 million of Upsilon RFO non-voting preference shares were issued to unaffiliated third-party investors through their investment in Upsilon Fund. Additionally, $25.3 million of the non-voting preference shares were issued to the Company, representing a 28.3% participation in the risks assumed by Upsilon RFO. As a result of these transactions, the net amount to be returned to unaffiliated third-party investors and the Company was $96.7 million and $16.0 million , respectively. At March 31, 2016 , the Company’s consolidated balance sheet included total assets and total liabilities of Upsilon RFO of $173.6 million and $173.5 million , respectively ( December 31, 2015 - $250.6 million and $250.5 million , respectively). Mona Lisa Re Ltd. (“Mona Lisa Re”) On March 14, 2013, Mona Lisa Re was licensed as a Bermuda domiciled SPI to provide reinsurance capacity to subsidiaries of RenaissanceRe, namely Renaissance Reinsurance and DaVinci, through reinsurance agreements which will be collateralized and funded by Mona Lisa Re through the issuance of one or more series of principal-at-risk variable rate notes to third-party investors. Upon issuance of a series of notes by Mona Lisa Re, all of the proceeds from the issuance are expected to be deposited into collateral accounts, separated by series, to fund any potential obligation under the reinsurance agreements entered into with Renaissance Reinsurance and/or DaVinci underlying such series of notes. The outstanding principal amount of each series of notes generally will be returned to holders of such notes upon the expiration of the risk period underlying such notes, unless an event occurs which causes a loss under the applicable series of notes, in which case the amount returned will be reduced by such noteholder’s pro rata share of such loss, as specified in the applicable governing documents of such notes. In addition, holders of such notes are generally entitled to interest payments, payable quarterly, as determined by the applicable governing documents of each series of notes. The Company concluded that Mona Lisa Re meets the definition of a VIE as it does not have sufficient equity capital to finance its activities. Therefore, the Company evaluated its relationship with Mona Lisa Re and concluded it does not have a variable interest in Mona Lisa Re. As a result, the financial position and results of operations of Mona Lisa Re are not consolidated by the Company. At March 31, 2016 , the total assets and total liabilities of Mona Lisa Re were $181.2 million and $181.2 million , respectively ( December 31, 2015 - $184.0 million and $184.0 million , respectively). The only transactions related to Mona Lisa Re that are recorded in the Company’s consolidated financial statements are the ceded reinsurance agreements entered into by Renaissance Reinsurance and DaVinci which are accounted for as prospective reinsurance under FASB ASC Topic Financial Services - Insurance. Renaissance Reinsurance and DaVinci have together entered into ceded reinsurance contracts with Mona Lisa Re with gross premiums ceded of $0.1 million and $0.1 million , respectively, during the three months ended March 31, 2016 ( 2015 - $0.1 million and $0.1 million , respectively). In addition, Renaissance Reinsurance and DaVinci recognized ceded premiums earned related to the ceded reinsurance contracts with Mona Lisa Re of $1.9 million and $1.3 million , respectively, during the three months ended March 31, 2016 ( 2015 - $1.9 million and $1.3 million , respectively).

Shareholders' Equity

Shareholders' Equity	3 Months Ended
	Mar. 31, 2016
Stockholders' Equity Note [Abstract]
Shareholders' Equity	SHAREHOLDERS’ EQUITY Dividends The Board of Directors of RenaissanceRe declared a dividend of $0.31 per common share to common shareholders of record on March 15, 2016 and RenaissanceRe paid a dividend of $0.31 per common share to common shareholders on March 31, 2016. During the three months ended March 31, 2016 , the Company declared and paid $5.6 million in preference share dividends ( 2015 - $5.6 million ) and $13.3 million in common share dividends ( 2015 - $13.7 million ). Share Repurchases The Company’s share repurchase program may be effected from time to time, depending on market conditions and other factors, through open market purchases and privately negotiated transactions. On February 19, 2016 , RenaissanceRe’s Board of Directors approved a renewal of its authorized share repurchase program for an aggregate amount of $500.0 million . Unless terminated earlier by RenaissanceRe’s Board of Directors, the program will expire when the Company has repurchased the full value of the shares authorized. The Company’s decision to repurchase common shares will depend on, among other matters, the market price of the common shares and the capital requirements of the Company. During the three months ended March 31, 2016 , the Company repurchased an aggregate of 769 thousand shares in open market transactions at an aggregate cost of $85.2 million , and at an average share price of $110.72 . At March 31, 2016 , $494.1 million remained available for repurchase under the share repurchase program. See “Part II, Item 2. Unregistered Sales of Equity Securities and Use of Proceeds” for additional information related to the Company’s share repurchase program.

Earnings Per Share

Earnings Per Share	3 Months Ended
	Mar. 31, 2016
Earnings Per Share [Abstract]
Earnings Per Share	EARNINGS PER SHARE The following table sets forth the computation of basic and diluted earnings per common share: Three months ended (thousands of shares) March 31, March 31, Numerator: Net income available to RenaissanceRe common shareholders $ 127,995 $ 167,843 Amount allocated to participating common shareholders (1) (1,601 ) (2,025 ) Net income allocated to RenaissanceRe common shareholders $ 126,394 $ 165,818 Denominator: Denominator for basic income per RenaissanceRe common share - weighted average common shares 42,577 39,631 Per common share equivalents of employee stock options and restricted shares 335 390 Denominator for diluted income per RenaissanceRe common share - adjusted weighted average common shares and assumed conversions 42,912 40,021 Net income available to RenaissanceRe common shareholders per common share – basic $ 2.97 $ 4.18 Net income available to RenaissanceRe common shareholders per common share – diluted $ 2.95 $ 4.14 (1) Represents earnings attributable to holders of unvested restricted shares issued under the Company’s 2001 Stock Incentive Plan and to the Company’s non-employee directors.

Segment Reporting

Segment Reporting	3 Months Ended
	Mar. 31, 2016
Segment Reporting, Measurement Disclosures [Abstract]
Segment Reporting	SEGMENT REPORTING The Company has the following reportable segments: (1) Catastrophe Reinsurance, which includes catastrophe reinsurance and certain property catastrophe joint ventures managed by the Company’s ventures unit; (2) Specialty Reinsurance, which includes specialty reinsurance and certain specialty joint ventures managed by the Company’s ventures unit; and (3) Lloyd’s, which includes reinsurance and insurance business written through Syndicate 1458. RenaissanceRe CCL, an indirect wholly owned subsidiary of RenaissanceRe, is the sole corporate member of Syndicate 1458. The underwriting results of Platinum are included in the Company’s Catastrophe Reinsurance and Specialty Reinsurance segments from March 2, 2015. The financial results of the Company’s strategic investments, former Insurance segment and redeemable noncontrolling interests are included in the Other category of the Company’s segment results. Also included in the Other category of the Company’s segment results are the Company’s investments in other ventures, investments unit, corporate expenses, capital servicing costs and certain expenses related to the acquisition of Platinum. The Company does not manage its assets by segment; accordingly, net investment income and total assets are not allocated to the segments. A summary of the significant components of the Company’s revenues and expenses is as follows: Three months ended March 31, 2016 Catastrophe Reinsurance Specialty Reinsurance Lloyd’s Other Total Gross premiums written $ 360,423 $ 368,989 $ 132,721 $ — $ 862,133 Net premiums written $ 188,785 $ 260,091 $ 62,799 $ — $ 511,675 Net premiums earned $ 136,985 $ 155,318 $ 61,303 $ — $ 353,606 Net claims and claim expenses incurred 7,820 91,852 27,016 (83 ) 126,605 Acquisition expenses 9,580 41,725 14,287 — 65,592 Operational expenses 20,268 21,773 14,134 60 56,235 Underwriting income (loss) $ 99,317 $ (32 ) $ 5,866 $ 23 105,174 Net investment income 28,863 28,863 Net foreign exchange losses (1,692 ) (1,692 ) Equity in earnings of other ventures 1,611 1,611 Other income 4,079 4,079 Net realized and unrealized gains on investments 61,653 61,653 Corporate expenses (8,225 ) (8,225 ) Interest expense (10,538 ) (10,538 ) Income before taxes and redeemable noncontrolling interests 180,925 Income tax expense (2,744 ) (2,744 ) Net income attributable to redeemable noncontrolling interests (44,591 ) (44,591 ) Dividends on preference shares (5,595 ) (5,595 ) Net income available to RenaissanceRe common shareholders $ 127,995 Net claims and claim expenses incurred – current accident year $ 13,883 $ 88,378 $ 25,948 $ — $ 128,209 Net claims and claim expenses incurred – prior accident years (6,063 ) 3,474 1,068 (83 ) (1,604 ) Net claims and claim expenses incurred – total $ 7,820 $ 91,852 $ 27,016 $ (83 ) $ 126,605 Net claims and claim expense ratio – current accident year 10.1 % 56.9 % 42.3 % 36.3 % Net claims and claim expense ratio – prior accident years (4.4 )% 2.2 % 1.8 % (0.5 )% Net claims and claim expense ratio – calendar year 5.7 % 59.1 % 44.1 % 35.8 % Underwriting expense ratio 21.8 % 40.9 % 46.3 % 34.5 % Combined ratio 27.5 % 100.0 % 90.4 % 70.3 % Three months ended March 31, 2015 Catastrophe Reinsurance Specialty Reinsurance Lloyd’s Other Total Gross premiums written (1) $ 389,247 $ 124,291 $ 130,130 $ (90 ) $ 643,578 Net premiums written $ 222,640 $ 103,915 $ 77,569 $ (89 ) $ 404,035 Net premiums earned $ 143,767 $ 94,876 $ 58,206 $ (89 ) $ 296,760 Net claims and claim expenses incurred 7,594 39,588 29,843 (172 ) 76,853 Acquisition expenses 7,654 20,689 14,693 365 43,401 Operational expenses 20,363 13,290 11,940 28 45,621 Underwriting income (loss) $ 108,156 $ 21,309 $ 1,730 $ (310 ) 130,885 Net investment income 39,707 39,707 Net foreign exchange losses (3,130 ) (3,130 ) Equity in earnings of other ventures 5,295 5,295 Other income 1,539 1,539 Net realized and unrealized gains on investments 41,749 41,749 Corporate expenses (45,533 ) (45,533 ) Interest expense (5,316 ) (5,316 ) Income before taxes and redeemable noncontrolling interests 165,196 Income tax benefit 47,904 47,904 Net income attributable to redeemable noncontrolling interests (39,662 ) (39,662 ) Dividends on preference shares (5,595 ) (5,595 ) Net income available to RenaissanceRe common shareholders $ 167,843 Net claims and claim expenses incurred – current accident year $ 24,124 $ 49,264 $ 25,610 $ — $ 98,998 Net claims and claim expenses incurred – prior accident years (16,530 ) (9,676 ) 4,233 (172 ) (22,145 ) Net claims and claim expenses incurred – total $ 7,594 $ 39,588 $ 29,843 $ (172 ) $ 76,853 Net claims and claim expense ratio – current accident year 16.8 % 51.9 % 44.0 % 33.4 % Net claims and claim expense ratio – prior accident years (11.5 )% (10.2 )% 7.3 % (7.5 )% Net claims and claim expense ratio – calendar year 5.3 % 41.7 % 51.3 % 25.9 % Underwriting expense ratio 19.5 % 35.8 % 45.7 % 30.0 % Combined ratio 24.8 % 77.5 % 97.0 % 55.9 % (1) Included in gross premiums written in the Other category is the elimination of inter-segment gross premiums written of $0.1 million for the three months ended March 31, 2015 .

Derivative Instruments

Derivative Instruments	3 Months Ended
	Mar. 31, 2016
Summary of Derivative Instruments [Abstract]
Derivative Instruments	DERIVATIVE INSTRUMENTS The Company enters into derivative instruments such as futures, options, swaps, forward contracts and other derivative contracts primarily to manage its foreign currency exposure, obtain exposure to a particular financial market, for yield enhancement, or for trading and speculation. The Company’s derivative instruments are generally traded under International Swaps and Derivatives Association master agreements, which establish the terms of the transactions entered into with the Company’s derivative counterparties. In the event one party becomes insolvent or otherwise defaults on its obligations, a master agreement generally permits the non-defaulting party to accelerate and terminate all outstanding transactions and net the transactions’ marked-to-market values so that a single sum in a single currency will be owed by, or owed to, the non-defaulting party. Effectively, this contractual close-out netting reduces credit exposure from gross to net exposure. Where the Company has entered into master netting agreements with counterparties, or the Company has the legal and contractual right to offset positions, the derivative positions are generally netted by counterparty and are reported accordingly in other assets and other liabilities. The tables below show the gross and net amounts of recognized derivative assets and liabilities, including the location on the consolidated balance sheets and fair value of the Company’s principal derivative instruments: Derivative Assets At March 31, 2016 Gross Amounts of Recognized Assets Gross Amounts Offset in the Balance Sheet Net Amounts of Assets Presented in the Balance Sheet Balance Sheet Location Collateral Net Amount Interest rate futures $ 1,451 1,320 $ 131 Other assets $ — $ 131 Foreign currency forward contracts (1) 5,041 89 4,952 Other assets — 4,952 Foreign currency forward contracts (2) 231 198 33 Other assets — 33 Credit default swaps 3 1 2 Other assets — 2 Total $ 6,726 $ 1,608 $ 5,118 $ — $ 5,118 Derivative Liabilities At March 31, 2016 Gross Amounts of Recognized Liabilities Gross Amounts Offset in the Balance Sheet Net Amounts of Liabilities Presented in the Balance Sheet Balance Sheet Location Collateral Pledged Net Amount Interest rate futures $ 2,941 1,320 $ 1,621 Other liabilities $ 1,621 $ — Foreign currency forward contracts (1) 6,979 604 6,375 Other liabilities — 6,375 Foreign currency forward contracts (2) 2,902 198 2,704 Other liabilities — 2,704 Credit default swaps 327 1 326 Other liabilities 326 — Total $ 13,149 $ 2,123 $ 11,026 $ 1,947 $ 9,079 (1) Contracts used to manage foreign currency risks in underwriting and non-investment operations. (2) Contracts used to manage foreign currency risks in investment operations. Derivative Assets At December 31, 2015 Gross Amounts of Recognized Assets Gross Amounts Offset in the Balance Sheet Net Amounts of Assets Presented in the Balance Sheet Balance Sheet Location Collateral Net Amount Interest rate futures $ 1,059 937 $ 122 Other assets $ — $ 122 Foreign currency forward contracts (1) 4,645 82 4,563 Other assets — 4,563 Foreign currency forward contracts (2) 1,007 599 408 Other assets — 408 Credit default swaps 257 44 213 Other assets — 213 Total $ 6,968 $ 1,662 $ 5,306 $ — $ 5,306 Derivative Liabilities At December 31, 2015 Gross Amounts of Recognized Liabilities Gross Amounts Offset in the Balance Sheet Net Amounts of Liabilities Presented in the Balance Sheet Balance Sheet Location Collateral Pledged Net Amount Interest rate futures $ 2,293 937 $ 1,356 Other liabilities $ 1,356 $ — Foreign currency forward contracts (1) 1,891 81 1,810 Other liabilities — 1,810 Foreign currency forward contracts (2) 806 599 207 Other liabilities — 207 Credit default swaps 491 44 447 Other liabilities 447 — Total $ 5,481 $ 1,661 $ 3,820 $ 1,803 $ 2,017 (1) Contracts used to manage foreign currency risks in underwriting and non-investment operations. (2) Contracts used to manage foreign currency risks in investment operations. Refer to “Note 3 . Investments” for information on reverse repurchase agreements. The location and amount of the gain (loss) recognized in the Company’s consolidated statements of operations related to its principal derivative instruments are shown in the following table: Location of gain (loss) recognized on derivatives Amount of gain (loss) recognized on derivatives Three months ended March 31, 2016 2015 Interest rate futures Net realized and unrealized gains on investments $ (19,359 ) $ (4,408 ) Foreign currency forward contracts (1) Net foreign exchange losses (1,374 ) 3,611 Foreign currency forward contracts (2) Net foreign exchange losses (5,858 ) 9,210 Credit default swaps Net realized and unrealized gains on investments (90 ) 40 Weather contract Net realized and unrealized gains on investments — 160 Total $ (26,681 ) $ 8,613 (1) Contracts used to manage foreign currency risks in underwriting and non-investment operations. (2) Contracts used to manage foreign currency risks in investment operations. The Company is not aware of the existence of any credit-risk related contingent features that it believes would be triggered in its derivative instruments that are in a net liability position at March 31, 2016 . Interest Rate Futures The Company uses interest rate futures within its portfolio of fixed maturity investments to manage its exposure to interest rate risk, which can include increasing or decreasing its exposure to this risk. At March 31, 2016 , the Company had $978.6 million of notional long positions and $1,140.8 million of notional short positions of primarily Eurodollar, U.S. treasury and non-U.S. dollar futures contracts ( December 31, 2015 - $1,012.5 million and $1,115.9 million , respectively). The fair value of these derivatives is determined using exchange traded prices. Foreign Currency Derivatives The Company’s functional currency is the U.S. dollar. The Company writes a portion of its business in currencies other than U.S. dollars and may, from time to time, experience foreign exchange gains and losses in the Company’s consolidated financial statements. All changes in exchange rates, with the exception of non-monetary assets and liabilities, are recognized currently in the Company’s consolidated statements of operations. Underwriting Operations Related Foreign Currency Contracts The Company’s foreign currency policy with regard to its underwriting operations is generally to hold foreign currency assets, including cash, investments and receivables that approximate the foreign currency liabilities, including claims and claim expense reserves and reinsurance balances payable. When necessary, the Company may use foreign currency forward and option contracts to minimize the effect of fluctuating foreign currencies on the value of non-U.S. dollar denominated assets and liabilities associated with its underwriting operations. The fair value of the Company’s underwriting operations related foreign currency contracts is determined using indicative pricing obtained from counterparties or broker quotes. At March 31, 2016 , the Company had outstanding underwriting related foreign currency contracts of $235.9 million in notional long positions and $178.9 million in notional short positions, denominated in U.S. dollars ( December 31, 2015 - $172.4 million and $101.5 million , respectively). Investment Portfolio Related Foreign Currency Forward Contracts The Company’s investment operations are exposed to currency fluctuations through its investments in non-U.S. dollar fixed maturity investments, short term investments and other investments. From time to time, the Company may employ foreign currency forward contracts in its investment portfolio to either assume foreign currency risk or to economically hedge its exposure to currency fluctuations from these investments. The fair value of the Company’s investment portfolio related foreign currency forward contracts is determined using an interpolated rate based on closing forward market rates. At March 31, 2016 , the Company had outstanding investment portfolio related foreign currency contracts of $13.0 million in notional long positions and $143.3 million in notional short positions, denominated in U.S. dollars ( December 31, 2015 - $31.3 million and $143.4 million , respectively). Credit Derivatives The Company’s exposure to credit risk is primarily due to its fixed maturity investments, short term investments, premiums receivable and reinsurance recoverable. From time to time, the Company purchases credit derivatives to hedge its exposures in the insurance industry, and to assist in managing the credit risk associated with ceded reinsurance. The Company also employs credit derivatives in its investment portfolio to either assume credit risk or hedge its credit exposure. The fair value of the credit derivatives is determined using industry valuation models, broker bid indications or internal pricing valuation techniques. The fair value of these credit derivatives can change based on a variety of factors including changes in credit spreads, default rates and recovery rates, the correlation of credit risk between the referenced credit and the counterparty, and market rate inputs such as interest rates. At March 31, 2016 , the Company had outstanding credit derivatives of $Nil in notional long positions and $10.7 million in notional short positions, denominated in U.S. dollars ( December 31, 2015 - $Nil and $46.1 million , respectively).

Commitments, Contingencies and

Commitments, Contingencies and Other Items	3 Months Ended
	Mar. 31, 2016
Commitments and Contingencies Disclosure [Abstract]
Commitments, Contingencies and Other Items	COMMITMENTS, CONTINGENCIES AND OTHER ITEMS There are no material changes from the commitments and contingencies previously disclosed in the Company’s Form 10-K for the year ended December 31, 2015 . Legal Proceedings 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 reinsurance treaties or contracts or direct surplus lines insurance policies. This category of business litigation may involve allegations of underwriting or claims-handling errors or misconduct, employment claims, regulatory actions or disputes arising from the Company’s business ventures. The Company’s operating subsidiaries are subject to claims litigation involving, among other things, disputed interpretations of policy coverages. Generally, the Company’s direct surplus lines insurance operations are subject to greater frequency and diversity of claims and claims-related litigation than its reinsurance operations and, in some jurisdictions, may be subject to direct actions by allegedly injured persons or entities seeking damages from policyholders. These lawsuits, involving claims on policies issued by the Company’s subsidiaries which are typical to the insurance industry in general and in the normal course of business, are considered in its loss and loss expense reserves. In addition, the Company may from time to time engage in litigation or arbitration related to its claims for payment in respect of ceded reinsurance, including disputes that challenge the Company’s ability to enforce its underwriting intent. Such matters could result, directly or indirectly, in providers of protection not meeting their obligations to the Company or not doing so on a timely basis. The Company may also be subject to other disputes from time to time, relating to operational or other matters distinct from insurance or reinsurance claims. Any litigation or arbitration, or regulatory process, contains an element of uncertainty, and the value of an exposure or a gain contingency related to a dispute is difficult to estimate accordingly. Currently, the Company believes that no individual litigation or arbitration to which it is presently a party is likely to have a material adverse effect on its financial condition, business or operations.

Condensed Consolidating Financi

Condensed Consolidating Financial Information Provided In Connection With Outstanding Debt Of Subsidiaries	3 Months Ended
	Mar. 31, 2016
Condensed Consolidating Financial Information Provided In Connection With Outstanding Debt Of Subsidiaries [Abstract]
Condensed Consolidating Financial Information Provided in Connection with Outstanding Debt of Subsidiaries	CONDENSED CONSOLIDATING FINANCIAL INFORMATION PROVIDED IN CONNECTION WITH OUTSTANDING DEBT OF SUBSIDIARIES The following tables present condensed consolidating balance sheets at March 31, 2016 and December 31, 2015 , condensed consolidating statements of operations and condensed consolidating statements of comprehensive income for the three months ended March 31, 2016 and 2015 , and condensed consolidating statements of cash flow for the three months ended March 31, 2016 and 2015 . Each of RenRe North America Holdings Inc., Platinum Underwriters Finance, Inc. and RenaissanceRe Finance is a 100% owned subsidiary of RenaissanceRe. For additional information related to the terms of the Company’s outstanding debt securities, see “Note 10. Debt and Credit Facilities in the Company’s Notes to Consolidated Financial Statements” in the Company’s Form 10-K for the year ended December 31, 2015 . Condensed Consolidating Balance Sheet at March 31, 2016 RenaissanceRe RenRe North Platinum Underwriters Finance, Inc. (Subsidiary Issuer) RenaissanceRe Finance, Inc. (Subsidiary Issuer) Other Consolidating RenaissanceRe Assets Total investments $ 363,935 $ 122,378 $ 300,411 $ — $ 8,253,477 $ — $ 9,040,201 Cash and cash equivalents 5,106 265 2,233 6,443 435,102 — 449,149 Investments in subsidiaries 3,886,801 45,715 890,244 1,210,210 — (6,032,970 ) — Due from subsidiaries and affiliates 166,761 83,978 — — — (250,739 ) — Premiums receivable — — — — 1,094,116 — 1,094,116 Prepaid reinsurance premiums — — — — 444,954 — 444,954 Reinsurance recoverable — — — — 167,228 — 167,228 Accrued investment income 1,505 257 464 — 35,266 — 37,492 Deferred acquisition costs — — — — 287,291 — 287,291 Receivable for investments sold 19 9 28 — 204,250 — 204,306 Other assets 396,973 28,749 12,510 126,958 110,121 (507,797 ) 167,514 Goodwill and other intangible assets 135,400 — — — 126,262 — 261,662 Total assets $ 4,956,500 $ 281,351 $ 1,205,890 $ 1,343,611 $ 11,158,067 $ (6,791,506 ) $ 12,153,913 Liabilities, Noncontrolling Interests and Shareholders’ Equity Liabilities Reserve for claims and claim expenses $ — $ — $ — $ — $ 2,811,523 $ — $ 2,811,523 Unearned premiums — — — — 1,261,454 — 1,261,454 Debt 117,000 — 264,985 545,363 147,188 (117,000 ) 957,536 Amounts due to subsidiaries and affiliates 70,981 199 343 89,183 — (160,706 ) — Reinsurance balances payable — — — — 618,344 — 618,344 Payable for investments purchased — 48 14,852 — 439,693 — 454,593 Other liabilities 7,926 205 14,370 6,648 194,735 (15,351 ) 208,533 Total liabilities 195,907 452 294,550 641,194 5,472,937 (293,057 ) 6,311,983 Redeemable noncontrolling interests — — — — 1,081,337 — 1,081,337 Shareholders’ Equity Total shareholders’ equity 4,760,593 280,899 911,340 702,417 4,603,793 (6,498,449 ) 4,760,593 Total liabilities, noncontrolling interests and shareholders’ equity $ 4,956,500 $ 281,351 $ 1,205,890 $ 1,343,611 $ 11,158,067 $ (6,791,506 ) $ 12,153,913 (1) Includes all other subsidiaries of RenaissanceRe Holdings Ltd. and eliminations. (2) Includes Parent Guarantor, Subsidiary Guarantor and Subsidiary Issuer consolidating adjustments. Condensed Consolidating Balance Sheet at December 31, 2015 RenaissanceRe Holdings Ltd. (Parent Guarantor) RenRe North Platinum Underwriters Finance, Inc. (Subsidiary Issuer) RenaissanceRe Finance, Inc. (Subsidiary Issuer) Other RenaissanceRe Holdings Ltd. Subsidiaries and Eliminations (Non-guarantor Subsidiaries) (1) Consolidating Adjustments (2) RenaissanceRe Consolidated Assets Total investments $ 349,892 $ 127,087 $ 205,777 $ — $ 8,316,312 $ — $ 8,999,068 Cash and cash equivalents 10,185 5,908 7,103 677 483,012 — 506,885 Investments in subsidiaries 3,902,519 48,754 867,909 1,185,736 — (6,004,918 ) — Due from subsidiaries and affiliates 81,282 69,739 — — — (151,021 ) — Premiums receivable — — — — 778,009 — 778,009 Prepaid reinsurance premiums — — — — 230,671 — 230,671 Reinsurance recoverable — — — — 134,526 — 134,526 Accrued investment income 1,253 169 348 — 37,979 — 39,749 Deferred acquisition costs — — — — 199,380 — 199,380 Receivable for investments sold 26 1 68,537 — 152,270 — 220,834 Other assets 390,302 29,532 12,852 115,456 124,215 (491,346 ) 181,011 Goodwill and other intangible assets 137,064 — — — 128,090 — 265,154 Total assets $ 4,872,523 $ 281,190 $ 1,162,526 $ 1,301,869 $ 10,584,464 $ (6,647,285 ) $ 11,555,287 Liabilities, Redeemable Noncontrolling Interest and Shareholders’ Equity Liabilities Reserve for claims and claim expenses $ — $ — $ — $ — $ 2,767,045 $ — $ 2,767,045 Unearned premiums — — — — 889,102 — 889,102 Debt 117,000 — 268,196 545,187 147,112 (117,000 ) 960,495 Amounts due to subsidiaries and affiliates 2,641 202 204 68,204 — (71,251 ) — Reinsurance balances payable — — — — 523,974 — 523,974 Payable for investments purchased 999 6 25 — 390,348 — 391,378 Other liabilities 19,699 1,148 6,620 — 222,320 (4,642 ) 245,145 Total liabilities 140,339 1,356 275,045 613,391 4,939,901 (192,893 ) 5,777,139 Redeemable noncontrolling interests — — — — 1,045,964 — 1,045,964 Shareholders’ Equity Total shareholders’ equity 4,732,184 279,834 887,481 688,478 4,598,599 (6,454,392 ) 4,732,184 Total liabilities, redeemable noncontrolling interest and shareholders’ equity $ 4,872,523 $ 281,190 $ 1,162,526 $ 1,301,869 $ 10,584,464 $ (6,647,285 ) $ 11,555,287 (1) Includes all other subsidiaries of RenaissanceRe Holdings Ltd. and eliminations. (2) Includes Parent Guarantor and Subsidiary Issuer consolidating adjustments. Condensed Consolidating Statement of Operations for RenaissanceRe RenRe North Platinum Underwriters Finance, Inc. (Subsidiary Issuer) RenaissanceRe Finance, Inc. (Subsidiary Issuer) Other Consolidating RenaissanceRe Revenues Net premiums earned $ — $ — $ — $ — $ 353,606 $ — $ 353,606 Net investment income 6,858 509 1,433 140 25,806 (5,883 ) 28,863 Net foreign exchange losses (1 ) — — — (1,691 ) — (1,692 ) Equity in earnings of other ventures — — — — 1,611 — 1,611 Other income — — — — 4,079 — 4,079 Net realized and unrealized gains on investments 4,488 1,115 1,964 — 54,086 — 61,653 Total revenues 11,345 1,624 3,397 140 437,497 (5,883 ) 448,120 Expenses Net claims and claim expenses incurred — — — — 126,605 — 126,605 Acquisition expenses — — — — 65,592 — 65,592 Operational expenses (701 ) (141 ) 52 7,009 55,096 (5,080 ) 56,235 Corporate expenses 5,613 — — — 2,612 — 8,225 Interest expense 140 — 1,476 6,543 2,519 (140 ) 10,538 Total expenses 5,052 (141 ) 1,528 13,552 252,424 (5,220 ) 267,195 Income (loss) before equity in net income (loss) of subsidiaries and taxes 6,293 1,765 1,869 (13,412 ) 185,073 (663 ) 180,925 Equity in net income (loss) of subsidiaries 123,538 (133 ) 22,335 24,479 — (170,219 ) — Income before taxes 129,831 1,632 24,204 11,067 185,073 (170,882 ) 180,925 Income tax benefit (expense) 3,759 (561 ) (344 ) 2,879 (8,477 ) — (2,744 ) Net income 133,590 1,071 23,860 13,946 176,596 (170,882 ) 178,181 Net income attributable to redeemable noncontrolling interests — — — — (44,591 ) — (44,591 ) Net income attributable to RenaissanceRe 133,590 1,071 23,860 13,946 132,005 (170,882 ) 133,590 Dividends on preference shares (5,595 ) — — — — — (5,595 ) Net income attributable to RenaissanceRe common shareholders $ 127,995 $ 1,071 $ 23,860 $ 13,946 $ 132,005 $ (170,882 ) $ 127,995 (1) Includes all other subsidiaries of RenaissanceRe Holdings Ltd. and eliminations. (2) Includes Parent Guarantor, Subsidiary Guarantor and Subsidiary Issuer consolidating adjustments. Condensed Consolidating Statement of Comprehensive Income for the three months ended March 31, 2016 RenaissanceRe RenRe North Platinum Underwriters Finance, Inc. (Subsidiary Issuer) RenaissanceRe Finance, Inc. (Subsidiary Issuer) Other Consolidating RenaissanceRe Comprehensive income Net income $ 133,590 $ 1,071 $ 23,860 $ 13,946 $ 176,596 $ (170,882 ) $ 178,181 Change in net unrealized gains on investments — — — — (443 ) — (443 ) Comprehensive income 133,590 1,071 23,860 13,946 176,153 (170,882 ) 177,738 Net income attributable to redeemable noncontrolling interests — — — — (44,591 ) — (44,591 ) Comprehensive income attributable to noncontrolling interests — — — — (44,591 ) — (44,591 ) Comprehensive income attributable to RenaissanceRe $ 133,590 $ 1,071 $ 23,860 $ 13,946 $ 131,562 $ (170,882 ) $ 133,147 (1) Includes all other subsidiaries of RenaissanceRe Holdings Ltd. and eliminations. (2) Includes Parent Guarantor, Subsidiary Guarantor and Subsidiary Issuer consolidating adjustments. Condensed Consolidating Statement of Operations for RenaissanceRe RenRe North Inc. Platinum Underwriters Finance, Inc. (Subsidiary Issuer) RenaissanceRe Finance, Inc. (Subsidiary Issuer) Other Consolidating RenaissanceRe Revenues Net premiums earned $ — $ — $ — $ — $ 296,760 $ — $ 296,760 Net investment income (loss) 2,624 331 (40 ) 36 37,730 (974 ) 39,707 Net foreign exchange losses (10 ) — — — (3,120 ) — (3,130 ) Equity in earnings of other ventures — — — — 5,295 — 5,295 Other income 166 — — — 1,538 (165 ) 1,539 Net realized and unrealized gains on investments 39 406 1 — 41,303 — 41,749 Total revenues 2,819 737 (39 ) 36 379,506 (1,139 ) 381,920 Expenses Net claims and claim expenses incurred — — — — 76,853 — 76,853 Acquisition expenses — — — — 43,401 — 43,401 Operational expenses 3,809 1,890 1 — 39,920 1 45,621 Corporate expenses 24,486 39 — — 21,008 — 45,533 Interest expense 295 3,676 492 222 667 (36 ) 5,316 Total expenses 28,590 5,605 493 222 181,849 (35 ) 216,724 (Loss) income before equity in net income (loss) of subsidiaries and taxes (25,771 ) (4,868 ) (532 ) (186 ) 197,657 (1,104 ) 165,196 Equity in net income (loss) of subsidiaries 200,945 3,416 1,410 43,902 — (249,673 ) — Income (loss) before taxes 175,174 (1,452 ) 878 43,716 197,657 (250,777 ) 165,196 Income tax (expense) benefit (1,736 ) 31,005 (695 ) 65 19,265 — 47,904 Net income (loss) 173,438 29,553 183 43,781 216,922 (250,777 ) 213,100 Net income attributable to redeemable noncontrolling interests — — — — (39,662 ) — (39,662 ) Net income (loss) attributable to RenaissanceRe 173,438 29,553 183 43,781 177,260 (250,777 ) 173,438 Dividends on preference shares (5,595 ) — — — — — (5,595 ) Net income (loss) available (attributable) to RenaissanceRe common shareholders $ 167,843 $ 29,553 $ 183 $ 43,781 $ 177,260 $ (250,777 ) $ 167,843 (1) Includes all other subsidiaries of RenaissanceRe Holdings Ltd. and eliminations. (2) Includes Parent Guarantor and Subsidiary Issuer consolidating adjustments. Condensed Consolidating Statement of Comprehensive Income (Loss) for the three months ended March 31, 2015 RenaissanceRe RenRe North Inc. Platinum Underwriters Finance, Inc. (Subsidiary Issuer) RenaissanceRe Finance, Inc. (Subsidiary Issuer) Other Consolidating RenaissanceRe Comprehensive income (loss) Net income (loss) $ 173,438 $ 29,553 $ 183 $ 43,781 $ 216,922 $ (250,777 ) $ 213,100 Change in net unrealized gains on investments — — — — (74 ) — (74 ) Comprehensive income (loss) 173,438 29,553 183 43,781 216,848 (250,777 ) 213,026 Net income attributable to redeemable noncontrolling interests — — — — (39,662 ) — (39,662 ) Comprehensive income attributable to redeemable noncontrolling interests — — — — (39,662 ) — (39,662 ) Comprehensive income (loss) attributable to RenaissanceRe $ 173,438 $ 29,553 $ 183 $ 43,781 $ 177,186 $ (250,777 ) $ 173,364 (1) Includes all other subsidiaries of RenaissanceRe Holdings Ltd. and eliminations. (2) Includes Parent Guarantor and Subsidiary Issuer consolidating adjustments. Condensed Consolidating Statement of Cash Flows RenaissanceRe RenRe North Platinum Underwriters Finance, Inc. (Subsidiary Issuer) RenaissanceRe Finance, Inc. (Subsidiary Issuer) Other RenaissanceRe Consolidated Cash flows (used in) provided by operating activities Net cash (used in) provided by operating activities $ (12,542 ) $ (332 ) $ 4,561 $ (15,213 ) $ 13,819 $ (9,707 ) Cash flows provided by (used in) investing activities Proceeds from sales and maturities of fixed maturity investments trading 80,763 25,376 20,566 — 2,413,368 2,540,073 Purchases of fixed maturity investments trading (195,141 ) (82,697 ) (135,561 ) — (2,242,884 ) (2,656,283 ) Proceeds from sales and maturities of fixed maturity investments available for sale — — — — 3,662 3,662 Net sales (purchases) of equity investments trading — 158 138,834 — (19,623 ) 119,369 Net sales (purchases) of short term investments 104,213 63,194 (33,409 ) — 11 134,009 Net purchases of other investments — — — — (39,698 ) (39,698 ) Dividends and return of capital from subsidiaries 118,544 2,900 — — (121,444 ) — Contributions to subsidiaries (19,924 ) — — — 19,924 — Due to (from) subsidiary 23,054 (14,242 ) 139 20,979 (29,930 ) — Net cash provided by (used in) investing activities 111,509 (5,311 ) (9,431 ) 20,979 (16,614 ) 101,132 Cash flows used in financing activities Dividends paid – RenaissanceRe common shares (13,285 ) — — — — (13,285 ) Dividends paid – preference shares (5,595 ) — — — — (5,595 ) RenaissanceRe common share repurchases (85,166 ) — — — — (85,166 ) Net third party redeemable noncontrolling interest share transactions — — — — (50,374 ) (50,374 ) Net cash used in financing activities (104,046 ) — — — (50,374 ) (154,420 ) Effect of exchange rate changes on foreign currency cash — — — — 5,259 5,259 Net (decrease) increase in cash and cash equivalents (5,079 ) (5,643 ) (4,870 ) 5,766 (47,910 ) (57,736 ) Cash and cash equivalents, beginning of period 10,185 5,908 7,103 677 483,012 506,885 Cash and cash equivalents, end of period $ 5,106 $ 265 $ 2,233 $ 6,443 $ 435,102 $ 449,149 (1) Includes all other subsidiaries of RenaissanceRe Holdings Ltd. and eliminations. Condensed Consolidating Statement of Cash Flows for the three months ended March 31, 2015 RenaissanceRe RenRe North Inc. Platinum Underwriters Finance, Inc. (Subsidiary Issuer) RenaissanceRe Finance, Inc. (Subsidiary Issuer) Other RenaissanceRe Holdings Ltd. Subsidiaries and Eliminations (Non-guarantor Subsidiaries) (1) RenaissanceRe Consolidated Cash flows used in operating activities Net cash used in operating activities $ (28,333 ) $ (13,573 ) $ (295 ) $ (2,176 ) $ (74,228 ) $ (118,605 ) Cash flows provided by (used in) investing activities Proceeds from sales and maturities of fixed maturity investments trading — 5,007 45,029 — 2,025,642 2,075,678 Purchases of fixed maturity investments trading — — — — (1,490,123 ) (1,490,123 ) Proceeds from sales and maturities of fixed maturity investments available for sale — — — — 1,757 1,757 Net sales of equity investments trading — 13,763 — — 36,864 50,627 Net sales (purchases) of short term investments 44,839 (5,848 ) (45,042 ) — 118,846 112,795 Net purchases of other investments — — — — (7,952 ) (7,952 ) Net purchases of investments in other ventures — — — — (126 ) (126 ) Net purchases of other assets — — — — (2,500 ) (2,500 ) Dividends and return of capital from subsidiaries 704,691 180,000 — — (884,691 ) — Contributions to subsidiaries 148,147 — — (180,000 ) 31,853 — Due to (from) subsidiaries 117,006 (180,053 ) — (116,773 ) 179,820 — Net purchase of Platinum (904,433 ) — 1,537 — 224,744 (678,152 ) Net cash provided by (used in) investing activities 110,250 12,869 1,524 (296,773 ) 234,134 62,004 Cash flows (used in) provided by financing activities Dividends paid – RenaissanceRe common shares (13,720 ) — — — — (13,720 ) Dividends paid – preference shares (5,595 ) — — — — (5,595 ) RenaissanceRe common share repurchases (446 ) — — — — (446 ) Net issuance (repayment) of debt — — — 299,400 (1,577 ) 297,823 Net third party redeemable noncontrolling interest share transactions — — — — (180,285 ) (180,285 ) Net cash (used in) provided by financing activities (19,761 ) — — 299,400 (181,862 ) 97,777 Effect of exchange rate changes on foreign currency cash — — — — (9,142 ) (9,142 ) Net increase (decrease) in cash and cash equivalents 62,156 (704 ) 1,229 451 (31,098 ) 32,034 Cash and cash equivalents, beginning of period 5,986 1,033 — — 518,565 525,584 Cash and cash equivalents, end of period $ 68,142 $ 329 $ 1,229 $ 451 $ 487,467 $ 557,618 (1) Includes all other subsidiaries of RenaissanceRe Holdings Ltd. and eliminations.

Significant Accounting Polici21

Significant Accounting Policies (Policy)	3 Months Ended
	Mar. 31, 2016
Accounting Policies [Abstract]
Basis of Presentation	BASIS OF PRESENTATION These consolidated financial statements have been prepared on the basis of accounting principles generally accepted in the United States (“GAAP”) for interim financial information and in conformity with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by GAAP for complete consolidated financial statements. In the opinion of management, these unaudited consolidated financial statements reflect all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation of the Company’s financial position and results of operations as at the end of and for the periods presented. All significant intercompany accounts and transactions have been eliminated from these statements. Certain comparative information has been reclassified to conform to the current presentation. Because of the seasonality of the Company’s business, the results of operations and cash flows for any interim period will not necessarily be indicative of the results of operations and cash flows for the full fiscal year or subsequent quarters.
Use of Estimates in Financial Statements	USE OF ESTIMATES IN FINANCIAL STATEMENTS The preparation of consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported and disclosed amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ materially from those estimates. The major estimates reflected in the Company’s consolidated financial statements include, but are not limited to, the reserve for claims and claim expenses; reinsurance recoverables, including allowances for reinsurance recoverables deemed uncollectible; estimates of written and earned premiums; fair value, including the fair value of investments, financial instruments and derivatives; impairment charges and the Company’s deferred tax valuation allowance.
Recently Adopted Accounting Pronouncements and Recently Issued Accounting Pronouncements Not Yet Adopted	RECENTLY ADOPTED ACCOUNTING PRONOUNCEMENTS Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could Be Achieved after the Requisite Service Period In June 2014, the FASB issued ASU No. 2014-12, Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could Be Achieved after the Requisite Service Period (“ASU 2014-12”). The objective of ASU 2014-12 is to resolve the diverse accounting treatment of share-based payment awards in situations where an employee would be eligible to vest in the award regardless of whether the employee is rendering service on the date the performance target is achieved. For example, if an employee is eligible to retire or otherwise terminate employment before the end of the period in which a performance target could be achieved and still be eligible to vest in the award. ASU 2014-12 will resolve if and when the performance target is achieved. ASU 2014-12 became effective for all entities in annual and interim periods beginning after December 15, 2015. Early adoption was permitted. The Company adopted ASU 2014-12 effective January 1, 2016, and prospectively applied the amendments in ASU 2014-12 to all awards granted or modified after the effective date. The adoption of ASU 2014-12 did not have a material impact on the Company’s consolidated statements of operations and financial position. Amendments to the Consolidation Analysis In February 2015, the FASB issued ASU No. 2015-02, Amendments to the Consolidation Analysis (“ASU 2015-02”). ASU 2015-02 will affect reporting entities that are required to evaluate whether they should consolidate certain legal entities. All legal entities are subject to reevaluation under ASU 2015-02. ASU 2015-02 set forth amendments: modifying the evaluation of whether limited partnerships and similar legal entities are VIEs; eliminating the presumption that a general partner should consolidate a limited partnership; affecting the consolidation analysis of reporting entities that are involved with VIEs, particularly those that have fee arrangement and related party relationships; and providing a scope exception from consolidation guidance for reporting entities with interests in certain investment funds. ASU 2015-02 became effective for public business entities for fiscal years, and for interim periods within those fiscal years, beginning after December 15, 2015. Early adoption was permitted. The Company adopted ASU 2015-02 effective January 1, 2016 and it did not have a material impact on the Company’s consolidated statements of operations and financial position. See “Note 7 . Variable Interest Entities” for additional information related to the Company’s VIE’s. Simplifying the Presentation of Debt Issuance Costs In April 2015, the FASB issued ASU No. 2015-03, Simplifying the Presentation of Debt Issuance Costs (“ASU 2015-03”). The objective of ASU 2015-03 is to simplify the presentation of debt issuance costs by requiring 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. The recognition and measurement guidance for debt issuance costs are not affected by the amendments in ASU 2015-03. ASU 2015-03 became effective for public business entities in annual and interim periods beginning after December 15, 2015 with retroactive application. The Company retrospectively adopted ASU 2015-03 effective January 1, 2016 and the impact on the Company’s consolidated balance sheet at December 31, 2015 was to reduce each of other assets and debt by $5.6 million , respectively, which represented the deferred debt issuance costs previously recorded in other assets and reclassified as an offset to debt. In addition, for the three months ended March 31, 2015 , corporate expense was reduced by $65 thousand and interest expense was increased by $65 thousand to reclassify the amortization of deferred debt issuance costs from corporate expense to interest expense. There was no net impact on the Company’s consolidated statements of operations or financial position as a result of the retrospective adoption of ASU 2015-03. Disclosures for Investments in Certain Entities That Calculate Net Asset Value per Share (or Its Equivalent) In May 2015, the FASB issued ASU No. 2015-07, Disclosures for Investments in Certain Entities That Calculate Net Asset Value per Share (or Its Equivalent) (“ASU 2015-07”). ASU 2015-07 removes the requirement to categorize within the fair value hierarchy all investments for which fair value is measured using the net asset value per share practical expedient. ASU 2015-07 also removes the requirement to make certain disclosures for all investments that are eligible to be measured at fair value using the net asset value per share practical expedient. Rather, those disclosures are limited to investments for which the entity has elected to measure the fair value using that practical expedient. ASU 2015-07 became effective for public business entities for fiscal years beginning after December 15, 2015, and interim periods within those fiscal years. A reporting entity should apply the amendments retrospectively to all periods presented. The retrospective approach requires that an investment for which fair value is measured using the net asset value per share practical expedient be removed from the fair value hierarchy in all periods presented in an entity’s financial statements. Earlier application was permitted. The Company retrospectively adopted ASU 2015-07 effective January 1, 2016; since this update is disclosure-related only, it did not have a material impact on the Company’s statements of operations and financial position. Simplifying the Accounting for Measurement-Period Adjustments In September 2015, the FASB issued ASU No. 2015-16, Simplifying the Accounting for Measurement-Period Adjustments (“ASU 2015-16”). ASU 2015-16 removes the requirement to retrospectively account for adjustments made to provisional amounts recognized in a business combination. Rather, those adjustments are to be recognized by the acquirer in the reporting period in which the adjustment amounts are determined. A reporting entity is also required to disclose, in the reporting period in which the adjustment amounts are recorded, the effect on earnings of changes in depreciation, amortization, or other income effects, as a result of the change to provisional amounts, calculated as if the accounting had been completed at the acquisition date. In addition, the reporting entity would present on the face of the income statement or disclose in the notes the amounts that would have been recorded in previous reporting periods if the adjustment to provisional amounts had been recognized as of the acquisition date. ASU 2015-16 was effective for public business entities in annual and interim periods beginning after December 15, 2015. ASU 2015-16 should be applied prospectively to adjustments for provisional amounts that occur after the effective date, with earlier application permitted for financial statements that have not been issued. The Company adopted ASU 2015-16 effective January 1, 2016 and it did not have a material impact on the Company’s consolidated statements of operations and financial position. RECENTLY ISSUED ACCOUNTING PRONOUNCEMENTS NOT YET ADOPTED Revenue from Contracts with Customers In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (“ASU 2014-09”). ASU 2014-09 provides comprehensive guidance on the recognition of revenue from customers arising from the transfer of goods and services. The core principle of the guidance is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. ASU 2014-09 also provides guidance on accounting for certain contract costs and will also require new disclosures. ASU 2014-09 is effective for public business entities in annual and interim periods beginning after December 15, 2017. Early adoption is permitted. The Company is currently evaluating the impact of this guidance; however, it is not expected to have a material impact on the Company’s consolidated statements of operations and financial position. Disclosures about Short-Duration Contracts In May 2015, the FASB issued ASU No. 2015-09, Disclosures about Short-Duration Contracts (“ASU 2015-09”). ASU 2015-09 requires insurance entities to disclose for annual reporting periods additional information about the liability for unpaid claims and claim adjustment expenses, including: (1) incurred and paid claims development information by accident year, on a net basis, for the number of years for which claims incurred typically remain outstanding, not exceeding 10 years; (2) a reconciliation of incurred and paid claims development information to the aggregate carry amount of the liability for claims and claim adjustment expenses, with separate disclosure of reinsurance recoverable on unpaid claims for each period presented in the statement of financial position; (3) for each accident year presented of incurred claims development information, the total of incurred but not reported liabilities plus expected development on reported claims including in the liability for unpaid claims and claim adjustment expenses, accompanied by a description of the reserving methodologies; (4) for each accident year presented of incurred claims development information, quantitative information about claim frequency accompanied by a qualitative description of methodologies used for determining claim frequency information; and (5) for all claims, the average annual percentage payout of incurred claims by age for the same number of accident years presented in (3) and (4) above. ASU 2015-09 also requires insurance entities to disclose information about significant changes in methodologies and assumptions used to calculate the liability for unpaid claims and claim adjustment expenses, including the reasons for the change and the effects on the financial statements. In addition, ASU 2015-09 requires insurance entities to disclose for annual and interim reporting periods a rollforward of the liability for unpaid claims and claim adjustment expenses. ASU 2015-09 is effective for public business entities in annual periods beginning after December 31, 2015, and interim periods within annual periods beginning after December 31, 2016. Early adoption is permitted. ASU 2015-09 should be applied retrospectively by providing comparative disclosures for each period presented, except for those requirements that apply only to the current period. As this guidance is disclosure-related only, the adoption of this guidance is not expected to have a material impact on the Company’s consolidated statements of operations and financial position. Recognition and Measurement of Financial Assets and Financial Liabilities In January 2016, the FASB issued ASU No. 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities (“ASU 2016-01”). ASU 2016-01 requires equity investments (except those accounted for under the equity method of accounting or those that result in the consolidation of the investee) to be measured at fair value with changes in fair value recognized in net income, simplifies the impairment assessment of equity investments without readily determinable values by requiring a qualitative assessment to identify impairment, eliminates the requirement to disclose the methods and significant assumptions used to estimate the fair value for financial instruments measured at amortized cost, requires the use of the exit price notion when measuring the fair value of financial instruments for disclosure purposes, requires separate presentation in other comprehensive income of the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk when the organization has elected to measure the liabilities in accordance with the fair value option, requires the separate presentation of financial assets and financial liabilities by measurement category and for form of financial asset on the balance sheet or the accompanying notes to the financial statements and clarifies that the reporting organization should evaluate the need for a valuation allowance on a deferred tax asset related to available for sale securities in combination with the organization’s other deferred tax assets. ASU 2016-01 is effective for public business entities in annual and interim periods beginning after December 15, 2017. Earlier adoption is generally not permitted, except for certain specific provisions of ASU 2016-01. The Company is currently evaluating the impact of this guidance; however, it is not expected to have a material impact on the Company’s consolidated statements of operations and financial position.

Investments (Tables)

Investments (Tables)	3 Months Ended
	Mar. 31, 2016
Investments [Abstract]
Schedule of Fair Value of Fixed Maturity Investments Trading	The following table summarizes the fair value of fixed maturity investments trading: March 31, December 31, U.S. treasuries $ 2,475,747 $ 2,064,944 Agencies 85,270 137,976 Municipal 564,555 583,282 Non-U.S. government (Sovereign debt) 353,756 334,981 Non-U.S. government-backed corporate 164,724 138,994 Corporate 1,833,825 2,055,323 Agency mortgage-backed 497,943 504,368 Non-agency mortgage-backed 248,609 262,235 Commercial mortgage-backed 535,068 554,625 Asset-backed 131,095 128,277 Total fixed maturity investments trading $ 6,890,592 $ 6,765,005
Schedule of Fair Value of Fixed Maturity Investments Available For Sale	The following table summarizes the amortized cost, fair value and related unrealized gains and losses and non-credit other-than-temporary impairments of fixed maturity investments available for sale: Included in Accumulated Other Comprehensive Income March 31, 2016 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Non-Credit Other-Than- Temporary Impairments (1) Agency mortgage-backed $ 141 $ 9 $ — $ 150 $ — Non-agency mortgage-backed 6,627 1,336 — 7,963 525 Commercial mortgage-backed 5,616 256 — 5,872 — Total fixed maturity investments available for sale $ 12,384 $ 1,601 $ — $ 13,985 $ 525 Included in Accumulated Other Comprehensive Income December 31, 2015 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Non-Credit Other-Than- Temporary Impairments (1) Agency mortgage-backed $ 143 $ 7 $ — $ 150 $ — Non-agency mortgage-backed 7,005 1,523 — 8,528 550 Commercial mortgage-backed 6,578 293 — 6,871 — Asset-backed 2,217 47 — 2,264 — Total fixed maturity investments available for sale $ 15,943 $ 1,870 $ — $ 17,813 $ 550 (1) Represents the non-credit component of other-than-temporary impairments recognized in accumulated other comprehensive income adjusted for subsequent sales of securities. It does not include the change in fair value subsequent to the impairment measurement date.
Schedule of Contractual Maturities of Fixed Maturity Investments	Contractual maturities of fixed maturity investments are described in the following table. Expected maturities will differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. Trading Available for Sale Total Fixed Maturity Investments March 31, 2016 Amortized Cost Fair Value Amortized Cost Fair Value Amortized Cost Fair Value Due in less than one year $ 217,858 $ 215,975 $ — $ — $ 217,858 $ 215,975 Due after one through five years 4,002,809 4,011,832 — — 4,002,809 4,011,832 Due after five through ten years 1,028,014 1,035,877 — — 1,028,014 1,035,877 Due after ten years 207,716 214,193 — — 207,716 214,193 Mortgage-backed 1,270,780 1,281,620 12,384 13,985 1,283,164 1,295,605 Asset-backed 131,077 131,095 — — 131,077 131,095 Total $ 6,858,254 $ 6,890,592 $ 12,384 $ 13,985 $ 6,870,638 $ 6,904,577
Schedule of Fair Value of Equity Investments Trading	The following table summarizes the fair value of equity investments trading: March 31, December 31, Financials $ 190,916 $ 193,716 Communications and technology 47,751 65,833 Industrial, utilities and energy 37,956 51,168 Consumer 29,997 40,918 Healthcare 24,374 36,148 Basic materials 4,515 6,094 Total $ 335,509 $ 393,877
Schedule of Net Investment Income	The components of net investment income are as follows: Three months ended March 31, March 31, Fixed maturity investments $ 36,006 $ 25,939 Short term investments 1,000 197 Equity investments 1,663 2,604 Other investments Private equity investments (9,358 ) 10,413 Other 3,309 3,508 Cash and cash equivalents 129 148 32,749 42,809 Investment expenses (3,886 ) (3,102 ) Net investment income $ 28,863 $ 39,707
Schedule of Net Realized and Unrealized Gains On Investments and Net Other-Than-Temporary Impairments	Net realized and unrealized gains on investments are as follows: Three months ended March 31, March 31, Gross realized gains $ 17,750 $ 21,532 Gross realized losses (14,665 ) (4,871 ) Net realized gains on fixed maturity investments 3,085 16,661 Net unrealized gains on fixed maturity investments trading 85,465 25,972 Net realized and unrealized losses on investments-related derivatives (19,449 ) (4,208 ) Net realized (losses) gains on equity investments trading (818 ) 7,481 Net unrealized losses on equity investments trading (6,630 ) (4,157 ) Net realized and unrealized gains on investments $ 61,653 $ 41,749

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2016
Fair Value Disclosures [Abstract]
Schedule Of Assets And Liabilities Measured At Fair Value On A Recurring Basis	Below is a summary of the assets and liabilities that are measured at fair value on a recurring basis and also represents the carrying amount on the Company’s consolidated balance sheets: At March 31, 2016 Total Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Fixed maturity investments U.S. treasuries $ 2,475,747 $ 2,475,747 $ — $ — Agencies 85,270 — 85,270 — Municipal 564,555 — 564,555 — Non-U.S. government (Sovereign debt) 353,756 — 353,756 — Non-U.S. government-backed corporate 164,724 — 164,724 — Corporate 1,833,825 — 1,826,325 7,500 Agency mortgage-backed 498,093 — 498,093 — Non-agency mortgage-backed 256,572 — 256,572 — Commercial mortgage-backed 540,940 — 540,940 — Asset-backed 131,095 — 131,095 — Total fixed maturity investments 6,904,577 2,475,747 4,421,330 7,500 Short term investments 1,171,523 — 1,171,523 — Equity investments trading 335,509 335,509 — — Other investments Catastrophe bonds 272,397 — 272,397 — Private equity partnerships (1) 200,465 — — — Senior secured bank loan fund (1) 22,334 — — — Hedge funds (1) 1,704 — — — Total other investments 496,900 — 272,397 — Other assets and (liabilities) Assumed and ceded (re)insurance contracts (2) (4,724 ) — — (4,724 ) Derivatives (3) (5,908 ) (1,490 ) (4,418 ) — Other (1,303 ) — (1,303 ) — Total other assets and (liabilities) (11,935 ) (1,490 ) (5,721 ) (4,724 ) $ 8,896,574 $ 2,809,766 $ 5,859,529 $ 2,776 (1) Certain investments that are measured at fair value using the net asset value per share (or its equivalent) practical expedient have not been classified in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to the amounts presented in the consolidated balance sheet. (2) Included in assumed and ceded (re)insurance contracts at March 31, 2016 are $2.8 million and $7.5 million of other assets and other liabilities, respectively. (3) See “Note 11 . Derivative Instruments” for additional information related to the fair value by type of contract, of derivatives entered into by the Company. At December 31, 2015 Total Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Fixed maturity investments U.S. treasuries $ 2,064,944 $ 2,064,944 $ — $ — Agencies 137,976 — 137,976 — Municipal 583,282 — 583,282 — Non-U.S. government (Sovereign debt) 334,981 — 334,981 — Non-U.S. government-backed corporate 138,994 — 138,994 — Corporate 2,055,323 — 2,047,705 7,618 Agency mortgage-backed 504,518 — 504,518 — Non-agency mortgage-backed 270,763 — 270,763 — Commercial mortgage-backed 561,496 — 561,496 — Asset-backed 130,541 — 130,541 — Total fixed maturity investments 6,782,818 2,064,944 4,710,256 7,618 Short term investments 1,208,401 — 1,208,401 — Equity investments trading 393,877 393,877 — — Other investments Catastrophe bonds 241,253 — 241,253 — Private equity partnerships (1) 214,848 — — — Senior secured bank loan fund (1) 23,231 — — — Hedge funds (1) 2,289 — — — Total other investments 481,621 — 241,253 — Other assets and (liabilities) Assumed and ceded (re)insurance contracts (2) (5,899 ) — — (5,899 ) Derivatives (3) 1,486 (1,234 ) 2,720 — Other (12,320 ) — (12,320 ) — Total other assets and (liabilities) (16,733 ) (1,234 ) (9,600 ) (5,899 ) $ 8,849,984 $ 2,457,587 $ 6,150,310 $ 1,719 (1) Certain investments that are measured at fair value using the net asset value per share (or its equivalent) practical expedient have not been classified in the fair value hierarchy. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to the amounts presented in the consolidated balance sheet. (2) Included in assumed and ceded (re)insurance contracts at December 31, 2015 are $3.5 million and $9.4 million of other assets and other liabilities, respectively. (3) See “Note 11 . Derivative Instruments” for additional information related to the fair value by type of contract, of derivatives entered into by the Company.
Schedule Of Quantitative Information Used As Level 3 Inputs	Below is a summary of quantitative information regarding the significant observable and unobservable inputs (Level 3) used in determining the fair value of assets and liabilities measured at fair value on a recurring basis: At March 31, 2016 Fair Value (Level 3) Valuation Technique Unobservable (U) and Observable (O) Inputs Low High Weighted Average or Actual Fixed maturity investments Corporate $ 7,500 See below See below n/a n/a n/a Total fixed maturity investments 7,500 Other assets and (liabilities) Assumed and ceded (re)insurance contracts (1,164 ) Internal valuation model Bond price (U) $ 94.39 $ 99.91 $ 97.32 Liquidity discount (U) n/a n/a 1.3 % Assumed and ceded (re)insurance contracts (3,560 ) Internal valuation model Net undiscounted cash flows (U) n/a n/a $ (10,725 ) Expected loss ratio (U) n/a n/a 13.0 % Net acquisition expense ratio (O) n/a n/a 19.0 % Contract period (O) 0.5 years 3.0 years 2.2 years Discount rate (U) n/a n/a 0.9 % Total assumed and ceded (re)insurance contracts (4,724 ) Total other assets and (liabilities) (4,724 ) $ 2,776
Schedule Of Assets And Liabilities Measured At Fair Value On A Recurring Basis Using Level 3 Inputs	Below is a reconciliation of the beginning and ending balances, for the periods shown, of assets and liabilities measured at fair value on a recurring basis using Level 3 inputs. Interest and dividend income are included in net investment income and are excluded from the reconciliation. Fair Value Measurements Using Significant Unobservable Inputs (Level 3) Fixed maturity investments trading Other assets and (liabilities) Total Balance - January 1, 2016 $ 7,618 $ (5,899 ) $ 1,719 Total unrealized (losses) gains Included in net investment income (118 ) — (118 ) Total realized gains Included in other income — 1,700 1,700 Purchases — (525 ) (525 ) Balance - March 31, 2016 $ 7,500 $ (4,724 ) $ 2,776 Change in unrealized gains for the period included in earnings for assets held at the end of the period included in net investment income $ (118 ) $ — $ (118 ) Fair Value Measurements Using Significant Unobservable Inputs (Level 3) Fixed maturity investments trading Other assets and (liabilities) Total Balance - January 1, 2015 $ 15,660 $ (8,634 ) $ 7,026 Total unrealized (losses) gains Included in net investment income (186 ) 160 (26 ) Total realized gains Included in other income — 1,316 1,316 Total foreign exchange (losses) gains — 6 6 Purchases — 80,421 80,421 Balance - March 31, 2015 $ 15,474 $ 73,269 $ 88,743 Change in unrealized gains for the period included in earnings for assets held at the end of the period included in net investment income $ (186 ) $ 160 $ (26 )
Schedule Of The Balances The Company Has Elected To Account For At Fair Value	Below is a summary of the balances the Company has elected to account for at fair value: March 31, December 31, Other investments $ 496,900 $ 481,621 Other assets $ 2,754 $ 3,463 Other liabilities $ 7,478 $ 9,362
Schedule Of Other Investments Measured Using Net Asset Valuations	The table below shows the Company’s portfolio of other investments measured using net asset valuations as a practical expedient: At March 31, 2016 Fair Value Unfunded Redemption Frequency Redemption Redemption Private equity partnerships $ 200,465 $ 241,641 See below See below See below Senior secured bank loan fund 22,334 2,330 See below See below See below Hedge funds 1,704 — See below See below See below Total other investments measured using net asset valuations $ 224,503 $ 243,971

Reinsurance (Tables)

Reinsurance (Tables)	3 Months Ended
	Mar. 31, 2016
Supplemental Schedule of Reinsurance Premiums for Insurance Companies [Abstract]
Effect Of Reinsurance And Retrocessional Activity On Premiums Written And Earned And On Net Claims And Claim Expenses Incurred	The following table sets forth the effect of reinsurance and retrocessional activity on premiums written and earned and on net claims and claim expenses incurred: Three months ended March 31, 2016 March 31, 2015 Premiums written Direct $ 43,176 $ 30,813 Assumed 818,957 612,765 Ceded (350,458 ) (239,543 ) Net premiums written $ 511,675 $ 404,035 Premiums earned Direct $ 33,140 $ 22,901 Assumed 456,641 382,603 Ceded (136,175 ) (108,744 ) Net premiums earned $ 353,606 $ 296,760 Claims and claim expenses Gross claims and claim expenses incurred $ 161,998 $ 88,995 Claims and claim expenses recovered (35,393 ) (12,142 ) Net claims and claim expenses incurred $ 126,605 $ 76,853

Noncontrolling Interests (Table

Noncontrolling Interests (Tables)	3 Months Ended
	Mar. 31, 2016
Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest [Abstract]
Schedule Of Redeemable Noncontrolling Interest	The activity in redeemable noncontrolling interest – DaVinciRe is detailed in the table below: Three months ended March 31, March 31, Beginning balance $ 930,955 $ 1,037,306 Redemption of shares from redeemable noncontrolling interest (90,818 ) (207,898 ) Sale of shares to redeemable noncontrolling interests 43,040 — Net income attributable to redeemable noncontrolling interest 42,964 38,326 Ending balance $ 926,141 $ 867,734 The activity in redeemable noncontrolling interest – Medici is detailed in the table below: Three months ended March 31, March 31, Beginning balance $ 115,009 $ 94,402 Redemption of shares from redeemable noncontrolling interest (940 ) (14,684 ) Sale of shares to redeemable noncontrolling interests 39,500 19,643 Net income attributable to redeemable noncontrolling interest 1,627 1,336 Ending balance $ 155,196 $ 100,697 A summary of the Company’s redeemable noncontrolling interests on its consolidated balance sheets is set forth below: March 31, December 31, 2015 Redeemable noncontrolling interest - DaVinciRe $ 926,141 $ 930,955 Redeemable noncontrolling interest - Medici 155,196 115,009 Redeemable noncontrolling interest $ 1,081,337 $ 1,045,964 A summary of the Company’s redeemable noncontrolling interests on its consolidated statements of operations set forth below: Three months ended March 31, March 31, Redeemable noncontrolling interest - DaVinciRe $ 42,964 $ 38,326 Redeemable noncontrolling interest - Medici 1,627 1,336 Net income attributable to redeemable noncontrolling interests $ 44,591 $ 39,662

Earnings Per Share (Tables)

Earnings Per Share (Tables)	3 Months Ended
	Mar. 31, 2016
Earnings Per Share [Abstract]
Schedule Of Computation Of Basic And Diluted Earnings Per Common Share	The following table sets forth the computation of basic and diluted earnings per common share: Three months ended (thousands of shares) March 31, March 31, Numerator: Net income available to RenaissanceRe common shareholders $ 127,995 $ 167,843 Amount allocated to participating common shareholders (1) (1,601 ) (2,025 ) Net income allocated to RenaissanceRe common shareholders $ 126,394 $ 165,818 Denominator: Denominator for basic income per RenaissanceRe common share - weighted average common shares 42,577 39,631 Per common share equivalents of employee stock options and restricted shares 335 390 Denominator for diluted income per RenaissanceRe common share - adjusted weighted average common shares and assumed conversions 42,912 40,021 Net income available to RenaissanceRe common shareholders per common share – basic $ 2.97 $ 4.18 Net income available to RenaissanceRe common shareholders per common share – diluted $ 2.95 $ 4.14 (1) Represents earnings attributable to holders of unvested restricted shares issued under the Company’s 2001 Stock Incentive Plan and to the Company’s non-employee directors.

Segment Reporting (Tables)

Segment Reporting (Tables)	3 Months Ended
	Mar. 31, 2016
Segment Reporting, Measurement Disclosures [Abstract]
Schedule Of Significant Components Of The Company's Revenues And Expenses	A summary of the significant components of the Company’s revenues and expenses is as follows: Three months ended March 31, 2016 Catastrophe Reinsurance Specialty Reinsurance Lloyd’s Other Total Gross premiums written $ 360,423 $ 368,989 $ 132,721 $ — $ 862,133 Net premiums written $ 188,785 $ 260,091 $ 62,799 $ — $ 511,675 Net premiums earned $ 136,985 $ 155,318 $ 61,303 $ — $ 353,606 Net claims and claim expenses incurred 7,820 91,852 27,016 (83 ) 126,605 Acquisition expenses 9,580 41,725 14,287 — 65,592 Operational expenses 20,268 21,773 14,134 60 56,235 Underwriting income (loss) $ 99,317 $ (32 ) $ 5,866 $ 23 105,174 Net investment income 28,863 28,863 Net foreign exchange losses (1,692 ) (1,692 ) Equity in earnings of other ventures 1,611 1,611 Other income 4,079 4,079 Net realized and unrealized gains on investments 61,653 61,653 Corporate expenses (8,225 ) (8,225 ) Interest expense (10,538 ) (10,538 ) Income before taxes and redeemable noncontrolling interests 180,925 Income tax expense (2,744 ) (2,744 ) Net income attributable to redeemable noncontrolling interests (44,591 ) (44,591 ) Dividends on preference shares (5,595 ) (5,595 ) Net income available to RenaissanceRe common shareholders $ 127,995 Net claims and claim expenses incurred – current accident year $ 13,883 $ 88,378 $ 25,948 $ — $ 128,209 Net claims and claim expenses incurred – prior accident years (6,063 ) 3,474 1,068 (83 ) (1,604 ) Net claims and claim expenses incurred – total $ 7,820 $ 91,852 $ 27,016 $ (83 ) $ 126,605 Net claims and claim expense ratio – current accident year 10.1 % 56.9 % 42.3 % 36.3 % Net claims and claim expense ratio – prior accident years (4.4 )% 2.2 % 1.8 % (0.5 )% Net claims and claim expense ratio – calendar year 5.7 % 59.1 % 44.1 % 35.8 % Underwriting expense ratio 21.8 % 40.9 % 46.3 % 34.5 % Combined ratio 27.5 % 100.0 % 90.4 % 70.3 % Three months ended March 31, 2015 Catastrophe Reinsurance Specialty Reinsurance Lloyd’s Other Total Gross premiums written (1) $ 389,247 $ 124,291 $ 130,130 $ (90 ) $ 643,578 Net premiums written $ 222,640 $ 103,915 $ 77,569 $ (89 ) $ 404,035 Net premiums earned $ 143,767 $ 94,876 $ 58,206 $ (89 ) $ 296,760 Net claims and claim expenses incurred 7,594 39,588 29,843 (172 ) 76,853 Acquisition expenses 7,654 20,689 14,693 365 43,401 Operational expenses 20,363 13,290 11,940 28 45,621 Underwriting income (loss) $ 108,156 $ 21,309 $ 1,730 $ (310 ) 130,885 Net investment income 39,707 39,707 Net foreign exchange losses (3,130 ) (3,130 ) Equity in earnings of other ventures 5,295 5,295 Other income 1,539 1,539 Net realized and unrealized gains on investments 41,749 41,749 Corporate expenses (45,533 ) (45,533 ) Interest expense (5,316 ) (5,316 ) Income before taxes and redeemable noncontrolling interests 165,196 Income tax benefit 47,904 47,904 Net income attributable to redeemable noncontrolling interests (39,662 ) (39,662 ) Dividends on preference shares (5,595 ) (5,595 ) Net income available to RenaissanceRe common shareholders $ 167,843 Net claims and claim expenses incurred – current accident year $ 24,124 $ 49,264 $ 25,610 $ — $ 98,998 Net claims and claim expenses incurred – prior accident years (16,530 ) (9,676 ) 4,233 (172 ) (22,145 ) Net claims and claim expenses incurred – total $ 7,594 $ 39,588 $ 29,843 $ (172 ) $ 76,853 Net claims and claim expense ratio – current accident year 16.8 % 51.9 % 44.0 % 33.4 % Net claims and claim expense ratio – prior accident years (11.5 )% (10.2 )% 7.3 % (7.5 )% Net claims and claim expense ratio – calendar year 5.3 % 41.7 % 51.3 % 25.9 % Underwriting expense ratio 19.5 % 35.8 % 45.7 % 30.0 % Combined ratio 24.8 % 77.5 % 97.0 % 55.9 % (1) Included in gross premiums written in the Other category is the elimination of inter-segment gross premiums written of $0.1 million for the three months ended March 31, 2015 .

Derivative Instruments (Tables)

Derivative Instruments (Tables)	3 Months Ended
	Mar. 31, 2016
Summary of Derivative Instruments [Abstract]
Schedule of Location on Consolidated Balance Sheets and Fair Value Of Principal Derivative Instruments	The tables below show the gross and net amounts of recognized derivative assets and liabilities, including the location on the consolidated balance sheets and fair value of the Company’s principal derivative instruments: Derivative Assets At March 31, 2016 Gross Amounts of Recognized Assets Gross Amounts Offset in the Balance Sheet Net Amounts of Assets Presented in the Balance Sheet Balance Sheet Location Collateral Net Amount Interest rate futures $ 1,451 1,320 $ 131 Other assets $ — $ 131 Foreign currency forward contracts (1) 5,041 89 4,952 Other assets — 4,952 Foreign currency forward contracts (2) 231 198 33 Other assets — 33 Credit default swaps 3 1 2 Other assets — 2 Total $ 6,726 $ 1,608 $ 5,118 $ — $ 5,118 Derivative Liabilities At March 31, 2016 Gross Amounts of Recognized Liabilities Gross Amounts Offset in the Balance Sheet Net Amounts of Liabilities Presented in the Balance Sheet Balance Sheet Location Collateral Pledged Net Amount Interest rate futures $ 2,941 1,320 $ 1,621 Other liabilities $ 1,621 $ — Foreign currency forward contracts (1) 6,979 604 6,375 Other liabilities — 6,375 Foreign currency forward contracts (2) 2,902 198 2,704 Other liabilities — 2,704 Credit default swaps 327 1 326 Other liabilities 326 — Total $ 13,149 $ 2,123 $ 11,026 $ 1,947 $ 9,079 (1) Contracts used to manage foreign currency risks in underwriting and non-investment operations. (2) Contracts used to manage foreign currency risks in investment operations. Derivative Assets At December 31, 2015 Gross Amounts of Recognized Assets Gross Amounts Offset in the Balance Sheet Net Amounts of Assets Presented in the Balance Sheet Balance Sheet Location Collateral Net Amount Interest rate futures $ 1,059 937 $ 122 Other assets $ — $ 122 Foreign currency forward contracts (1) 4,645 82 4,563 Other assets — 4,563 Foreign currency forward contracts (2) 1,007 599 408 Other assets — 408 Credit default swaps 257 44 213 Other assets — 213 Total $ 6,968 $ 1,662 $ 5,306 $ — $ 5,306 Derivative Liabilities At December 31, 2015 Gross Amounts of Recognized Liabilities Gross Amounts Offset in the Balance Sheet Net Amounts of Liabilities Presented in the Balance Sheet Balance Sheet Location Collateral Pledged Net Amount Interest rate futures $ 2,293 937 $ 1,356 Other liabilities $ 1,356 $ — Foreign currency forward contracts (1) 1,891 81 1,810 Other liabilities — 1,810 Foreign currency forward contracts (2) 806 599 207 Other liabilities — 207 Credit default swaps 491 44 447 Other liabilities 447 — Total $ 5,481 $ 1,661 $ 3,820 $ 1,803 $ 2,017 (1) Contracts used to manage foreign currency risks in underwriting and non-investment operations. (2) Contracts used to manage foreign currency risks in investment operations.
Schedule of Gain (Loss) Recognized In Consolidated Statements Of Operations Related To Principal Derivative Instruments	The location and amount of the gain (loss) recognized in the Company’s consolidated statements of operations related to its principal derivative instruments are shown in the following table: Location of gain (loss) recognized on derivatives Amount of gain (loss) recognized on derivatives Three months ended March 31, 2016 2015 Interest rate futures Net realized and unrealized gains on investments $ (19,359 ) $ (4,408 ) Foreign currency forward contracts (1) Net foreign exchange losses (1,374 ) 3,611 Foreign currency forward contracts (2) Net foreign exchange losses (5,858 ) 9,210 Credit default swaps Net realized and unrealized gains on investments (90 ) 40 Weather contract Net realized and unrealized gains on investments — 160 Total $ (26,681 ) $ 8,613 (1) Contracts used to manage foreign currency risks in underwriting and non-investment operations. (2) Contracts used to manage foreign currency risks in investment operations.

Condensed Consolidating Finan29

Condensed Consolidating Financial Information Provided In Connection With Outstanding Debt Of Subsidiaries (Tables)	3 Months Ended
	Mar. 31, 2016
Condensed Consolidating Financial Information Provided In Connection With Outstanding Debt Of Subsidiaries [Abstract]
Condensed Consolidating Balance Sheets	Condensed Consolidating Balance Sheet at March 31, 2016 RenaissanceRe RenRe North Platinum Underwriters Finance, Inc. (Subsidiary Issuer) RenaissanceRe Finance, Inc. (Subsidiary Issuer) Other Consolidating RenaissanceRe Assets Total investments $ 363,935 $ 122,378 $ 300,411 $ — $ 8,253,477 $ — $ 9,040,201 Cash and cash equivalents 5,106 265 2,233 6,443 435,102 — 449,149 Investments in subsidiaries 3,886,801 45,715 890,244 1,210,210 — (6,032,970 ) — Due from subsidiaries and affiliates 166,761 83,978 — — — (250,739 ) — Premiums receivable — — — — 1,094,116 — 1,094,116 Prepaid reinsurance premiums — — — — 444,954 — 444,954 Reinsurance recoverable — — — — 167,228 — 167,228 Accrued investment income 1,505 257 464 — 35,266 — 37,492 Deferred acquisition costs — — — — 287,291 — 287,291 Receivable for investments sold 19 9 28 — 204,250 — 204,306 Other assets 396,973 28,749 12,510 126,958 110,121 (507,797 ) 167,514 Goodwill and other intangible assets 135,400 — — — 126,262 — 261,662 Total assets $ 4,956,500 $ 281,351 $ 1,205,890 $ 1,343,611 $ 11,158,067 $ (6,791,506 ) $ 12,153,913 Liabilities, Noncontrolling Interests and Shareholders’ Equity Liabilities Reserve for claims and claim expenses $ — $ — $ — $ — $ 2,811,523 $ — $ 2,811,523 Unearned premiums — — — — 1,261,454 — 1,261,454 Debt 117,000 — 264,985 545,363 147,188 (117,000 ) 957,536 Amounts due to subsidiaries and affiliates 70,981 199 343 89,183 — (160,706 ) — Reinsurance balances payable — — — — 618,344 — 618,344 Payable for investments purchased — 48 14,852 — 439,693 — 454,593 Other liabilities 7,926 205 14,370 6,648 194,735 (15,351 ) 208,533 Total liabilities 195,907 452 294,550 641,194 5,472,937 (293,057 ) 6,311,983 Redeemable noncontrolling interests — — — — 1,081,337 — 1,081,337 Shareholders’ Equity Total shareholders’ equity 4,760,593 280,899 911,340 702,417 4,603,793 (6,498,449 ) 4,760,593 Total liabilities, noncontrolling interests and shareholders’ equity $ 4,956,500 $ 281,351 $ 1,205,890 $ 1,343,611 $ 11,158,067 $ (6,791,506 ) $ 12,153,913 (1) Includes all other subsidiaries of RenaissanceRe Holdings Ltd. and eliminations. (2) Includes Parent Guarantor, Subsidiary Guarantor and Subsidiary Issuer consolidating adjustments. Condensed Consolidating Balance Sheet at December 31, 2015 RenaissanceRe Holdings Ltd. (Parent Guarantor) RenRe North Platinum Underwriters Finance, Inc. (Subsidiary Issuer) RenaissanceRe Finance, Inc. (Subsidiary Issuer) Other RenaissanceRe Holdings Ltd. Subsidiaries and Eliminations (Non-guarantor Subsidiaries) (1) Consolidating Adjustments (2) RenaissanceRe Consolidated Assets Total investments $ 349,892 $ 127,087 $ 205,777 $ — $ 8,316,312 $ — $ 8,999,068 Cash and cash equivalents 10,185 5,908 7,103 677 483,012 — 506,885 Investments in subsidiaries 3,902,519 48,754 867,909 1,185,736 — (6,004,918 ) — Due from subsidiaries and affiliates 81,282 69,739 — — — (151,021 ) — Premiums receivable — — — — 778,009 — 778,009 Prepaid reinsurance premiums — — — — 230,671 — 230,671 Reinsurance recoverable — — — — 134,526 — 134,526 Accrued investment income 1,253 169 348 — 37,979 — 39,749 Deferred acquisition costs — — — — 199,380 — 199,380 Receivable for investments sold 26 1 68,537 — 152,270 — 220,834 Other assets 390,302 29,532 12,852 115,456 124,215 (491,346 ) 181,011 Goodwill and other intangible assets 137,064 — — — 128,090 — 265,154 Total assets $ 4,872,523 $ 281,190 $ 1,162,526 $ 1,301,869 $ 10,584,464 $ (6,647,285 ) $ 11,555,287 Liabilities, Redeemable Noncontrolling Interest and Shareholders’ Equity Liabilities Reserve for claims and claim expenses $ — $ — $ — $ — $ 2,767,045 $ — $ 2,767,045 Unearned premiums — — — — 889,102 — 889,102 Debt 117,000 — 268,196 545,187 147,112 (117,000 ) 960,495 Amounts due to subsidiaries and affiliates 2,641 202 204 68,204 — (71,251 ) — Reinsurance balances payable — — — — 523,974 — 523,974 Payable for investments purchased 999 6 25 — 390,348 — 391,378 Other liabilities 19,699 1,148 6,620 — 222,320 (4,642 ) 245,145 Total liabilities 140,339 1,356 275,045 613,391 4,939,901 (192,893 ) 5,777,139 Redeemable noncontrolling interests — — — — 1,045,964 — 1,045,964 Shareholders’ Equity Total shareholders’ equity 4,732,184 279,834 887,481 688,478 4,598,599 (6,454,392 ) 4,732,184 Total liabilities, redeemable noncontrolling interest and shareholders’ equity $ 4,872,523 $ 281,190 $ 1,162,526 $ 1,301,869 $ 10,584,464 $ (6,647,285 ) $ 11,555,287 (1) Includes all other subsidiaries of RenaissanceRe Holdings Ltd. and eliminations. (2) Includes Parent Guarantor and Subsidiary Issuer consolidating adjustments.
Condensed Consolidating Statements of Operations	Condensed Consolidating Statement of Operations for RenaissanceRe RenRe North Inc. Platinum Underwriters Finance, Inc. (Subsidiary Issuer) RenaissanceRe Finance, Inc. (Subsidiary Issuer) Other Consolidating RenaissanceRe Revenues Net premiums earned $ — $ — $ — $ — $ 296,760 $ — $ 296,760 Net investment income (loss) 2,624 331 (40 ) 36 37,730 (974 ) 39,707 Net foreign exchange losses (10 ) — — — (3,120 ) — (3,130 ) Equity in earnings of other ventures — — — — 5,295 — 5,295 Other income 166 — — — 1,538 (165 ) 1,539 Net realized and unrealized gains on investments 39 406 1 — 41,303 — 41,749 Total revenues 2,819 737 (39 ) 36 379,506 (1,139 ) 381,920 Expenses Net claims and claim expenses incurred — — — — 76,853 — 76,853 Acquisition expenses — — — — 43,401 — 43,401 Operational expenses 3,809 1,890 1 — 39,920 1 45,621 Corporate expenses 24,486 39 — — 21,008 — 45,533 Interest expense 295 3,676 492 222 667 (36 ) 5,316 Total expenses 28,590 5,605 493 222 181,849 (35 ) 216,724 (Loss) income before equity in net income (loss) of subsidiaries and taxes (25,771 ) (4,868 ) (532 ) (186 ) 197,657 (1,104 ) 165,196 Equity in net income (loss) of subsidiaries 200,945 3,416 1,410 43,902 — (249,673 ) — Income (loss) before taxes 175,174 (1,452 ) 878 43,716 197,657 (250,777 ) 165,196 Income tax (expense) benefit (1,736 ) 31,005 (695 ) 65 19,265 — 47,904 Net income (loss) 173,438 29,553 183 43,781 216,922 (250,777 ) 213,100 Net income attributable to redeemable noncontrolling interests — — — — (39,662 ) — (39,662 ) Net income (loss) attributable to RenaissanceRe 173,438 29,553 183 43,781 177,260 (250,777 ) 173,438 Dividends on preference shares (5,595 ) — — — — — (5,595 ) Net income (loss) available (attributable) to RenaissanceRe common shareholders $ 167,843 $ 29,553 $ 183 $ 43,781 $ 177,260 $ (250,777 ) $ 167,843 (1) Includes all other subsidiaries of RenaissanceRe Holdings Ltd. and eliminations. (2) Includes Parent Guarantor and Subsidiary Issuer consolidating adjustments. Condensed Consolidating Statement of Operations for RenaissanceRe RenRe North Platinum Underwriters Finance, Inc. (Subsidiary Issuer) RenaissanceRe Finance, Inc. (Subsidiary Issuer) Other Consolidating RenaissanceRe Revenues Net premiums earned $ — $ — $ — $ — $ 353,606 $ — $ 353,606 Net investment income 6,858 509 1,433 140 25,806 (5,883 ) 28,863 Net foreign exchange losses (1 ) — — — (1,691 ) — (1,692 ) Equity in earnings of other ventures — — — — 1,611 — 1,611 Other income — — — — 4,079 — 4,079 Net realized and unrealized gains on investments 4,488 1,115 1,964 — 54,086 — 61,653 Total revenues 11,345 1,624 3,397 140 437,497 (5,883 ) 448,120 Expenses Net claims and claim expenses incurred — — — — 126,605 — 126,605 Acquisition expenses — — — — 65,592 — 65,592 Operational expenses (701 ) (141 ) 52 7,009 55,096 (5,080 ) 56,235 Corporate expenses 5,613 — — — 2,612 — 8,225 Interest expense 140 — 1,476 6,543 2,519 (140 ) 10,538 Total expenses 5,052 (141 ) 1,528 13,552 252,424 (5,220 ) 267,195 Income (loss) before equity in net income (loss) of subsidiaries and taxes 6,293 1,765 1,869 (13,412 ) 185,073 (663 ) 180,925 Equity in net income (loss) of subsidiaries 123,538 (133 ) 22,335 24,479 — (170,219 ) — Income before taxes 129,831 1,632 24,204 11,067 185,073 (170,882 ) 180,925 Income tax benefit (expense) 3,759 (561 ) (344 ) 2,879 (8,477 ) — (2,744 ) Net income 133,590 1,071 23,860 13,946 176,596 (170,882 ) 178,181 Net income attributable to redeemable noncontrolling interests — — — — (44,591 ) — (44,591 ) Net income attributable to RenaissanceRe 133,590 1,071 23,860 13,946 132,005 (170,882 ) 133,590 Dividends on preference shares (5,595 ) — — — — — (5,595 ) Net income attributable to RenaissanceRe common shareholders $ 127,995 $ 1,071 $ 23,860 $ 13,946 $ 132,005 $ (170,882 ) $ 127,995 (1) Includes all other subsidiaries of RenaissanceRe Holdings Ltd. and eliminations. (2) Includes Parent Guarantor, Subsidiary Guarantor and Subsidiary Issuer consolidating adjustments.
Condensed Consolidating Statement of Comprehensive Income (Loss)	Condensed Consolidating Statement of Comprehensive Income (Loss) for the three months ended March 31, 2015 RenaissanceRe RenRe North Inc. Platinum Underwriters Finance, Inc. (Subsidiary Issuer) RenaissanceRe Finance, Inc. (Subsidiary Issuer) Other Consolidating RenaissanceRe Comprehensive income (loss) Net income (loss) $ 173,438 $ 29,553 $ 183 $ 43,781 $ 216,922 $ (250,777 ) $ 213,100 Change in net unrealized gains on investments — — — — (74 ) — (74 ) Comprehensive income (loss) 173,438 29,553 183 43,781 216,848 (250,777 ) 213,026 Net income attributable to redeemable noncontrolling interests — — — — (39,662 ) — (39,662 ) Comprehensive income attributable to redeemable noncontrolling interests — — — — (39,662 ) — (39,662 ) Comprehensive income (loss) attributable to RenaissanceRe $ 173,438 $ 29,553 $ 183 $ 43,781 $ 177,186 $ (250,777 ) $ 173,364 (1) Includes all other subsidiaries of RenaissanceRe Holdings Ltd. and eliminations. (2) Includes Parent Guarantor and Subsidiary Issuer consolidating adjustments. Condensed Consolidating Statement of Comprehensive Income for the three months ended March 31, 2016 RenaissanceRe RenRe North Platinum Underwriters Finance, Inc. (Subsidiary Issuer) RenaissanceRe Finance, Inc. (Subsidiary Issuer) Other Consolidating RenaissanceRe Comprehensive income Net income $ 133,590 $ 1,071 $ 23,860 $ 13,946 $ 176,596 $ (170,882 ) $ 178,181 Change in net unrealized gains on investments — — — — (443 ) — (443 ) Comprehensive income 133,590 1,071 23,860 13,946 176,153 (170,882 ) 177,738 Net income attributable to redeemable noncontrolling interests — — — — (44,591 ) — (44,591 ) Comprehensive income attributable to noncontrolling interests — — — — (44,591 ) — (44,591 ) Comprehensive income attributable to RenaissanceRe $ 133,590 $ 1,071 $ 23,860 $ 13,946 $ 131,562 $ (170,882 ) $ 133,147 (1) Includes all other subsidiaries of RenaissanceRe Holdings Ltd. and eliminations. (2) Includes Parent Guarantor, Subsidiary Guarantor and Subsidiary Issuer consolidating adjustments.
Condensed Consolidating Statements Of Cash Flows	Condensed Consolidating Statement of Cash Flows RenaissanceRe RenRe North Platinum Underwriters Finance, Inc. (Subsidiary Issuer) RenaissanceRe Finance, Inc. (Subsidiary Issuer) Other RenaissanceRe Consolidated Cash flows (used in) provided by operating activities Net cash (used in) provided by operating activities $ (12,542 ) $ (332 ) $ 4,561 $ (15,213 ) $ 13,819 $ (9,707 ) Cash flows provided by (used in) investing activities Proceeds from sales and maturities of fixed maturity investments trading 80,763 25,376 20,566 — 2,413,368 2,540,073 Purchases of fixed maturity investments trading (195,141 ) (82,697 ) (135,561 ) — (2,242,884 ) (2,656,283 ) Proceeds from sales and maturities of fixed maturity investments available for sale — — — — 3,662 3,662 Net sales (purchases) of equity investments trading — 158 138,834 — (19,623 ) 119,369 Net sales (purchases) of short term investments 104,213 63,194 (33,409 ) — 11 134,009 Net purchases of other investments — — — — (39,698 ) (39,698 ) Dividends and return of capital from subsidiaries 118,544 2,900 — — (121,444 ) — Contributions to subsidiaries (19,924 ) — — — 19,924 — Due to (from) subsidiary 23,054 (14,242 ) 139 20,979 (29,930 ) — Net cash provided by (used in) investing activities 111,509 (5,311 ) (9,431 ) 20,979 (16,614 ) 101,132 Cash flows used in financing activities Dividends paid – RenaissanceRe common shares (13,285 ) — — — — (13,285 ) Dividends paid – preference shares (5,595 ) — — — — (5,595 ) RenaissanceRe common share repurchases (85,166 ) — — — — (85,166 ) Net third party redeemable noncontrolling interest share transactions — — — — (50,374 ) (50,374 ) Net cash used in financing activities (104,046 ) — — — (50,374 ) (154,420 ) Effect of exchange rate changes on foreign currency cash — — — — 5,259 5,259 Net (decrease) increase in cash and cash equivalents (5,079 ) (5,643 ) (4,870 ) 5,766 (47,910 ) (57,736 ) Cash and cash equivalents, beginning of period 10,185 5,908 7,103 677 483,012 506,885 Cash and cash equivalents, end of period $ 5,106 $ 265 $ 2,233 $ 6,443 $ 435,102 $ 449,149 (1) Includes all other subsidiaries of RenaissanceRe Holdings Ltd. and eliminations. Condensed Consolidating Statement of Cash Flows for the three months ended March 31, 2015 RenaissanceRe RenRe North Inc. Platinum Underwriters Finance, Inc. (Subsidiary Issuer) RenaissanceRe Finance, Inc. (Subsidiary Issuer) Other RenaissanceRe Holdings Ltd. Subsidiaries and Eliminations (Non-guarantor Subsidiaries) (1) RenaissanceRe Consolidated Cash flows used in operating activities Net cash used in operating activities $ (28,333 ) $ (13,573 ) $ (295 ) $ (2,176 ) $ (74,228 ) $ (118,605 ) Cash flows provided by (used in) investing activities Proceeds from sales and maturities of fixed maturity investments trading — 5,007 45,029 — 2,025,642 2,075,678 Purchases of fixed maturity investments trading — — — — (1,490,123 ) (1,490,123 ) Proceeds from sales and maturities of fixed maturity investments available for sale — — — — 1,757 1,757 Net sales of equity investments trading — 13,763 — — 36,864 50,627 Net sales (purchases) of short term investments 44,839 (5,848 ) (45,042 ) — 118,846 112,795 Net purchases of other investments — — — — (7,952 ) (7,952 ) Net purchases of investments in other ventures — — — — (126 ) (126 ) Net purchases of other assets — — — — (2,500 ) (2,500 ) Dividends and return of capital from subsidiaries 704,691 180,000 — — (884,691 ) — Contributions to subsidiaries 148,147 — — (180,000 ) 31,853 — Due to (from) subsidiaries 117,006 (180,053 ) — (116,773 ) 179,820 — Net purchase of Platinum (904,433 ) — 1,537 — 224,744 (678,152 ) Net cash provided by (used in) investing activities 110,250 12,869 1,524 (296,773 ) 234,134 62,004 Cash flows (used in) provided by financing activities Dividends paid – RenaissanceRe common shares (13,720 ) — — — — (13,720 ) Dividends paid – preference shares (5,595 ) — — — — (5,595 ) RenaissanceRe common share repurchases (446 ) — — — — (446 ) Net issuance (repayment) of debt — — — 299,400 (1,577 ) 297,823 Net third party redeemable noncontrolling interest share transactions — — — — (180,285 ) (180,285 ) Net cash (used in) provided by financing activities (19,761 ) — — 299,400 (181,862 ) 97,777 Effect of exchange rate changes on foreign currency cash — — — — (9,142 ) (9,142 ) Net increase (decrease) in cash and cash equivalents 62,156 (704 ) 1,229 451 (31,098 ) 32,034 Cash and cash equivalents, beginning of period 5,986 1,033 — — 518,565 525,584 Cash and cash equivalents, end of period $ 68,142 $ 329 $ 1,229 $ 451 $ 487,467 $ 557,618 (1) Includes all other subsidiaries of RenaissanceRe Holdings Ltd. and eliminations.

Organization (Details)

Organization (Details)	Nov. 13, 2014
RenaissanceRe Upsilon Fund Ltd. | Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Percent of segregated funds owned by third party investors	100.00%

Significant Accounting Polici31

Significant Accounting Policies (Details) - Accounting Standards Update 2015-03 - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2015
Corporate Expense
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Amortization of debt issuance costs	$ (65)
Interest Expense
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Amortization of debt issuance costs	$ 65
Debt
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred debt issuance costs		$ 5,600
Other Assets
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred debt issuance costs		$ (5,600)

Investments (Schedule of Fair V

Investments (Schedule of Fair Value of Fixed Maturity Investments Trading) (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Investment [Line Items]
Fixed maturity investments trading, at fair value	$ 6,890,592	$ 6,765,005
U.S. treasuries
Investment [Line Items]
Fixed maturity investments trading, at fair value	2,475,747	2,064,944
Agencies
Investment [Line Items]
Fixed maturity investments trading, at fair value	85,270	137,976
Municipal
Investment [Line Items]
Fixed maturity investments trading, at fair value	564,555	583,282
Non-U.S. government (Sovereign Debt)
Investment [Line Items]
Fixed maturity investments trading, at fair value	353,756	334,981
Non-U.S. government-backed corporate
Investment [Line Items]
Fixed maturity investments trading, at fair value	164,724	138,994
Corporate
Investment [Line Items]
Fixed maturity investments trading, at fair value	1,833,825	2,055,323
Agency mortgage-backed
Investment [Line Items]
Fixed maturity investments trading, at fair value	497,943	504,368
Non-agency mortgage-backed
Investment [Line Items]
Fixed maturity investments trading, at fair value	248,609	262,235
Commercial mortgage-backed
Investment [Line Items]
Fixed maturity investments trading, at fair value	535,068	554,625
Asset-backed
Investment [Line Items]
Fixed maturity investments trading, at fair value	$ 131,095	$ 128,277

Investments (Schedule of Fair33

Investments (Schedule of Fair Value of Fixed Maturity Investments Available for Sale) (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Investment [Line Items]
Available for Sale, Amortized Cost	$ 12,384	$ 15,943
Available for Sale, Fair Value	13,985	17,813
Fixed maturity investments
Investment [Line Items]
Available for Sale, Amortized Cost	12,384	15,943
Gross Unrealized Gains	1,601	1,870
Gross Unrealized Losses	0	0
Available for Sale, Fair Value	13,985	17,813
Non-Credit Other-Than-Temporary Impairments	525	550
Agency mortgage-backed
Investment [Line Items]
Available for Sale, Amortized Cost	141	143
Gross Unrealized Gains	9	7
Gross Unrealized Losses	0	0
Available for Sale, Fair Value	150	150
Non-Credit Other-Than-Temporary Impairments	0	0
Non-agency mortgage-backed
Investment [Line Items]
Available for Sale, Amortized Cost	6,627	7,005
Gross Unrealized Gains	1,336	1,523
Gross Unrealized Losses	0	0
Available for Sale, Fair Value	7,963	8,528
Non-Credit Other-Than-Temporary Impairments	525	550
Commercial mortgage-backed
Investment [Line Items]
Available for Sale, Amortized Cost	5,616	6,578
Gross Unrealized Gains	256	293
Gross Unrealized Losses	0	0
Available for Sale, Fair Value	5,872	6,871
Non-Credit Other-Than-Temporary Impairments	$ 0	0
Asset-backed
Investment [Line Items]
Available for Sale, Amortized Cost		2,217
Gross Unrealized Gains		47
Gross Unrealized Losses		0
Available for Sale, Fair Value		2,264
Non-Credit Other-Than-Temporary Impairments		$ 0

Investments (Schedule of Contra

Investments (Schedule of Contractual Maturities of Fixed Maturity Investments) (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Trading Securities [Abstract]
Trading Debt Securities, Amortized Cost, Due in less than one year	$ 217,858
Trading Debt Securities, Amortized Cost, Due after one through five years	4,002,809
Trading Debt Securities, Amortized Cost, Due after five through ten years	1,028,014
Trading Debt Securities, Amortized Cost, Due after ten years	207,716
Trading Debt Securities, Amortized Cost	6,858,254
Trading Debt Securities, Fair Value, Due in less than one year	215,975
Trading Debt Securities, Fair Value, Due after one through five years	4,011,832
Trading Debt Securities, Fair Value, Due after five through ten years	1,035,877
Trading Debt Securities, Fair Value, Due after ten years	214,193
Trading Debt Securities, Fair Value	6,890,592
Available-for-sale Securities [Abstract]
Available for Sale, Amortized Cost, Due in less than one year	0
Available for Sale, Amortized Cost, Due after one through five years	0
Available for Sale, Amortized Cost, Due after five through ten years	0
Available for Sale, Amortized Cost, Due after ten years	0
Available for Sale, Amortized Cost	12,384	$ 15,943
Available for Sale, Fair Value, Due in less than one year	0
Available for Sale, Fair Value, Due after one through five years	0
Available for Sale, Fair Value, Due after five through ten years	0
Available for Sale, Fair Value, Due after ten years	0
Available for Sale, Fair Value	13,985	$ 17,813
Fixed Maturity Investments [Abstract]
Debt Securities, Amortized Cost, Due in less than one year	217,858
Debt Securities, Amortized Cost, Due after one through five years	4,002,809
Debt Securities, Amortized Cost, Due after five through ten years	1,028,014
Debt Securities, Amortized Cost, Due after ten years	207,716
Debt Securities, Amortized Cost	6,870,638
Debt Securities, Fair Value, Due in less than one year	215,975
Debt Securities, Fair Value, Due after one through five years	4,011,832
Debt Securities, Fair Value, Due after five through ten years	1,035,877
Debt Securities, Fair Value, Due after ten years	214,193
Debt Securities, Fair Value	6,904,577
Mortgage-backed
Trading Securities [Abstract]
Trading Debt Securities, Amortized Cost	1,270,780
Trading Debt Securities, Fair Value	1,281,620
Available-for-sale Securities [Abstract]
Available for Sale, Amortized Cost	12,384
Available for Sale, Fair Value	13,985
Fixed Maturity Investments [Abstract]
Debt Securities, Amortized Cost	1,283,164
Debt Securities, Fair Value	1,295,605
Asset-backed
Trading Securities [Abstract]
Trading Debt Securities, Amortized Cost	131,077
Trading Debt Securities, Fair Value	131,095
Available-for-sale Securities [Abstract]
Available for Sale, Amortized Cost	0
Available for Sale, Fair Value	0
Fixed Maturity Investments [Abstract]
Debt Securities, Amortized Cost	131,077
Debt Securities, Fair Value	$ 131,095

Investments (Schedule of Fair35

Investments (Schedule of Fair Value of Equity Investments Trading) (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Schedule of Trading Securities and Other Trading Assets [Line Items]
Equity investments trading	$ 335,509	$ 393,877
Financials
Schedule of Trading Securities and Other Trading Assets [Line Items]
Equity investments trading	190,916	193,716
Communications and technology
Schedule of Trading Securities and Other Trading Assets [Line Items]
Equity investments trading	47,751	65,833
Industrial, utilities and energy
Schedule of Trading Securities and Other Trading Assets [Line Items]
Equity investments trading	37,956	51,168
Consumer
Schedule of Trading Securities and Other Trading Assets [Line Items]
Equity investments trading	29,997	40,918
Healthcare
Schedule of Trading Securities and Other Trading Assets [Line Items]
Equity investments trading	24,374	36,148
Basic materials
Schedule of Trading Securities and Other Trading Assets [Line Items]
Equity investments trading	$ 4,515	$ 6,094

Investments (Pledged Investment

Investments (Pledged Investments) (Details) - USD ($) $ in Billions	Mar. 31, 2016	Dec. 31, 2015
Investments [Abstract]
Cash and investments at fair value on deposit with, or in trust accounts for the benefit of various counterparties	$ 2.4	$ 2.5
Cash and investments at fair value on deposit with, or in trust accounts for the benefit of U.S. state regulatory authorities	$ 0.7	$ 0.7

Investments (Reverse Purchase A

Investments (Reverse Purchase Agreements) (Details) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Investments, Debt and Equity Securities [Abstract]
Value of reverse repurchase agreements	$ 40.3	$ 26.2
Minimum required collateral for reverse repurchase agreements, expressed as a percentage of loan principal	102.00%

Investments (Schedule of Net In

Investments (Schedule of Net Investment Income) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Investment income before investment expenses	$ 32,749	$ 42,809
Investment expenses	(3,886)	(3,102)
Net investment income	28,863	39,707
Fixed maturity investments
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Investment income before investment expenses	36,006	25,939
Short term investments
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Investment income before investment expenses	1,000	197
Equity investments
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Investment income before investment expenses	1,663	2,604
Private equity investments
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Investment income before investment expenses	(9,358)	10,413
Other
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Investment income before investment expenses	3,309	3,508
Cash and cash equivalents
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Investment income before investment expenses	$ 129	$ 148

Investments (Schedule of Net Re

Investments (Schedule of Net Realized and Unrealized Gains on Investments and Net Other-Than-Temporary Impairments) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Gain (Loss) on Investments [Line Items]
Net realized and unrealized gains on investments	$ 61,653	$ 41,749
Fixed maturity investments
Gain (Loss) on Investments [Line Items]
Gross realized gains	17,750	21,532
Gross realized losses	(14,665)	(4,871)
Net realized gains on fixed maturity investments	3,085	16,661
Net unrealized gains (losses) on investments trading	85,465	25,972
Derivatives
Gain (Loss) on Investments [Line Items]
Net realized and unrealized losses on investments-related derivatives	(19,449)	(4,208)
Equity investments
Gain (Loss) on Investments [Line Items]
Net unrealized gains (losses) on investments trading	(6,630)	(4,157)
Net realized (losses) gains on equity investments trading	$ (818)	$ 7,481

Fair Value Measurements (Assets

Fair Value Measurements (Assets and Liabilities Measured at Fair Value on a Recurring Basis) (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short term investments	$ 1,171,523	$ 1,208,401
Equity investments trading	335,509	393,877
Other investments	496,900	481,621
Other assets and (liabilities)	2,754	3,463
Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other assets and (liabilities)	(4,724)
Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturity investments	6,904,577	6,782,818
Short term investments	1,171,523	1,208,401
Equity investments trading	335,509	393,877
Other investments	496,900	481,621
Other assets and (liabilities)	(11,935)	(16,733)
Total assets and liabilities measured on recurring basis	8,896,574	8,849,984
Fair Value, Measurements, Recurring | Quoted Prices In Active Markets For Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturity investments	2,475,747	2,064,944
Short term investments	0	0
Equity investments trading	335,509	393,877
Other investments	0	0
Other assets and (liabilities)	(1,490)	(1,234)
Total assets and liabilities measured on recurring basis	2,809,766	2,457,587
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturity investments	4,421,330	4,710,256
Short term investments	1,171,523	1,208,401
Equity investments trading	0	0
Other investments	272,397	241,253
Other assets and (liabilities)	(5,721)	(9,600)
Total assets and liabilities measured on recurring basis	5,859,529	6,150,310
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturity investments	7,500	7,618
Short term investments	0	0
Equity investments trading	0	0
Other investments	0	0
Other assets and (liabilities)	(4,724)	(5,899)
Total assets and liabilities measured on recurring basis	2,776	1,719
Fair Value, Measurements, Recurring | U.S. treasuries
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturity investments	2,475,747	2,064,944
Fair Value, Measurements, Recurring | U.S. treasuries | Quoted Prices In Active Markets For Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturity investments	2,475,747	2,064,944
Fair Value, Measurements, Recurring | U.S. treasuries | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturity investments	0	0
Fair Value, Measurements, Recurring | U.S. treasuries | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturity investments	0	0
Fair Value, Measurements, Recurring | Agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturity investments	85,270	137,976
Fair Value, Measurements, Recurring | Agencies | Quoted Prices In Active Markets For Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturity investments	0	0
Fair Value, Measurements, Recurring | Agencies | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturity investments	85,270	137,976
Fair Value, Measurements, Recurring | Agencies | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturity investments	0	0
Fair Value, Measurements, Recurring | Municipal
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturity investments	564,555	583,282
Fair Value, Measurements, Recurring | Municipal | Quoted Prices In Active Markets For Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturity investments	0	0
Fair Value, Measurements, Recurring | Municipal | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturity investments	564,555	583,282
Fair Value, Measurements, Recurring | Municipal | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturity investments	0	0
Fair Value, Measurements, Recurring | Non-U.S. government (Sovereign Debt)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturity investments	353,756	334,981
Fair Value, Measurements, Recurring | Non-U.S. government (Sovereign Debt) | Quoted Prices In Active Markets For Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturity investments	0	0
Fair Value, Measurements, Recurring | Non-U.S. government (Sovereign Debt) | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturity investments	353,756	334,981
Fair Value, Measurements, Recurring | Non-U.S. government (Sovereign Debt) | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturity investments	0	0
Fair Value, Measurements, Recurring | Non-U.S. government-backed corporate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturity investments	164,724	138,994
Fair Value, Measurements, Recurring | Non-U.S. government-backed corporate | Quoted Prices In Active Markets For Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturity investments	0	0
Fair Value, Measurements, Recurring | Non-U.S. government-backed corporate | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturity investments	164,724	138,994
Fair Value, Measurements, Recurring | Non-U.S. government-backed corporate | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturity investments	0	0
Fair Value, Measurements, Recurring | Corporate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturity investments	1,833,825	2,055,323
Fair Value, Measurements, Recurring | Corporate | Quoted Prices In Active Markets For Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturity investments	0	0
Fair Value, Measurements, Recurring | Corporate | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturity investments	1,826,325	2,047,705
Fair Value, Measurements, Recurring | Corporate | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturity investments	7,500	7,618
Fair Value, Measurements, Recurring | Agency mortgage-backed
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturity investments	498,093	504,518
Fair Value, Measurements, Recurring | Agency mortgage-backed | Quoted Prices In Active Markets For Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturity investments	0	0
Fair Value, Measurements, Recurring | Agency mortgage-backed | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturity investments	498,093	504,518
Fair Value, Measurements, Recurring | Agency mortgage-backed | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturity investments	0	0
Fair Value, Measurements, Recurring | Non-agency mortgage-backed
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturity investments	256,572	270,763
Fair Value, Measurements, Recurring | Non-agency mortgage-backed | Quoted Prices In Active Markets For Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturity investments	0	0
Fair Value, Measurements, Recurring | Non-agency mortgage-backed | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturity investments	256,572	270,763
Fair Value, Measurements, Recurring | Non-agency mortgage-backed | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturity investments	0	0
Fair Value, Measurements, Recurring | Commercial mortgage-backed
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturity investments	540,940	561,496
Fair Value, Measurements, Recurring | Commercial mortgage-backed | Quoted Prices In Active Markets For Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturity investments	0	0
Fair Value, Measurements, Recurring | Commercial mortgage-backed | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturity investments	540,940	561,496
Fair Value, Measurements, Recurring | Commercial mortgage-backed | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturity investments	0	0
Fair Value, Measurements, Recurring | Asset-backed
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturity investments	131,095	130,541
Fair Value, Measurements, Recurring | Asset-backed | Quoted Prices In Active Markets For Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturity investments	0	0
Fair Value, Measurements, Recurring | Asset-backed | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturity investments	131,095	130,541
Fair Value, Measurements, Recurring | Asset-backed | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturity investments	0	0
Fair Value, Measurements, Recurring | Catastrophe bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other investments	272,397	241,253
Fair Value, Measurements, Recurring | Catastrophe bonds | Quoted Prices In Active Markets For Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other investments	0	0
Fair Value, Measurements, Recurring | Catastrophe bonds | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other investments	272,397	241,253
Fair Value, Measurements, Recurring | Catastrophe bonds | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other investments	0	0
Fair Value, Measurements, Recurring | Private equity partnerships
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other investments	200,465	214,848
Fair Value, Measurements, Recurring | Private equity partnerships | Quoted Prices In Active Markets For Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other investments	0	0
Fair Value, Measurements, Recurring | Private equity partnerships | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other investments	0	0
Fair Value, Measurements, Recurring | Private equity partnerships | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other investments	0	0
Fair Value, Measurements, Recurring | Senior secured bank loan funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other investments	22,334	23,231
Fair Value, Measurements, Recurring | Senior secured bank loan funds | Quoted Prices In Active Markets For Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other investments	0	0
Fair Value, Measurements, Recurring | Senior secured bank loan funds | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other investments	0	0
Fair Value, Measurements, Recurring | Senior secured bank loan funds | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other investments	0	0
Fair Value, Measurements, Recurring | Hedge funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other investments	1,704	2,289
Fair Value, Measurements, Recurring | Hedge funds | Quoted Prices In Active Markets For Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other investments	0	0
Fair Value, Measurements, Recurring | Hedge funds | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other investments	0	0
Fair Value, Measurements, Recurring | Hedge funds | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other investments	0	0
Fair Value, Measurements, Recurring | Assumed and ceded (re)insurance contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other assets and (liabilities)	(4,724)	(5,899)
Fair Value, Measurements, Recurring | Assumed and ceded (re)insurance contracts | Quoted Prices In Active Markets For Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other assets and (liabilities)	0	0
Fair Value, Measurements, Recurring | Assumed and ceded (re)insurance contracts | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other assets and (liabilities)	0	0
Fair Value, Measurements, Recurring | Assumed and ceded (re)insurance contracts | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other assets and (liabilities)	(4,724)	(5,899)
Fair Value, Measurements, Recurring | Assumed and ceded (re)insurance contracts | Significant Unobservable Inputs (Level 3) | Other Assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other assets and (liabilities)	2,754	3,463
Fair Value, Measurements, Recurring | Assumed and ceded (re)insurance contracts | Significant Unobservable Inputs (Level 3) | Other Liabilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other assets and (liabilities)	(7,478)	(9,362)
Fair Value, Measurements, Recurring | Derivatives
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other assets and (liabilities)	(5,908)	1,486
Fair Value, Measurements, Recurring | Derivatives | Quoted Prices In Active Markets For Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other assets and (liabilities)	(1,490)	(1,234)
Fair Value, Measurements, Recurring | Derivatives | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other assets and (liabilities)	(4,418)	2,720
Fair Value, Measurements, Recurring | Derivatives | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other assets and (liabilities)	0	0
Fair Value, Measurements, Recurring | Other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other assets and (liabilities)	(1,303)	(12,320)
Fair Value, Measurements, Recurring | Other | Quoted Prices In Active Markets For Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other assets and (liabilities)	0	0
Fair Value, Measurements, Recurring | Other | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other assets and (liabilities)	(1,303)	(12,320)
Fair Value, Measurements, Recurring | Other | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other assets and (liabilities)	$ 0	$ 0

Fair Value Measurements (Narrat

Fair Value Measurements (Narrative) (Details) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other liabilities	$ 7,478,000		$ 9,362,000
Debt	957,536,000		960,495,000
Debt, fair value	992,500,000		$ 973,342,000
Net unrealized gains (losses) recognized in earnings	(15,362,000)	$ 4,885,000
Other Investments | Net investment income
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Net unrealized gains (losses) recognized in earnings	(15,400,000)	4,900,000
Other assets and (liabilities) | Other income (loss)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Net unrealized gains (losses) recognized in earnings	0	$ 0
Significant Unobservable Inputs (Level 3)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets, fair value	(2,776,000)
Significant Unobservable Inputs (Level 3) | Corporate | Discounted Cash Flow Valuation Technique
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets, fair value	(7,500,000)
Significant Unobservable Inputs (Level 3) | Assumed reinsurance contract | Internal Valuation Model Valuation Technique
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Liabilities, fair value	$ (1,164,000)
Significant Unobservable Inputs (Level 3) | Assumed reinsurance contract | Weighted Average or Actual | Internal Valuation Model Valuation Technique
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Liquidity discount	1.30%
Significant Unobservable Inputs (Level 3) | Assumed and ceded (re)insurance contract | Internal Valuation Model Valuation Technique
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Liabilities, fair value	$ (3,560,000)
U.S. treasuries
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Weighted average effective yield	0.90%		1.30%
Agencies
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Weighted average effective yield	1.50%		1.70%
Municipal
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Weighted average effective yield	1.80%		2.00%
Non-U.S. government (Sovereign Debt)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Weighted average effective yield	1.00%		1.40%
Non-U.S. government-backed corporate
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Weighted average effective yield	1.10%		1.30%
Corporate
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Weighted average effective yield	3.90%		3.80%
Agency mortgage-backed
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Weighted average effective yield	2.30%		2.70%
Weighted average life	5 years 1 month 6 days		6 years 1 month 6 days
Non-agency prime residential mortgage-backed
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Weighted average effective yield	4.50%		3.80%
Weighted average life	4 years 1 month 6 days		4 years 3 months 18 days
AltA non-agency mortgage-backed
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Weighted average effective yield	5.50%		4.70%
Weighted average life	5 years 4 months 24 days		5 years 4 months 24 days
Commercial mortgage-backed
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Weighted average effective yield	3.00%		2.90%
Weighted average life	3 years 9 months 18 days		3 years 8 months 12 days
Asset-backed
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Weighted average effective yield	2.10%		2.10%
Weighted average life	2 years 6 months		2 years 6 months
Restricted stock units (RSUs) | Significant Other Observable Inputs (Level 2)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other liabilities	$ 1,300,000
Private equity partnerships | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Liquidation period for fund assets	7 years
Private equity partnerships | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Liquidation period for fund assets	10 years
Senior secured bank loan funds
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment in closed end fund	$ 22,300,000
Senior secured bank loan funds | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Liquidation period for fund assets	4 years
Senior secured bank loan funds | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Liquidation period for fund assets	5 years
Hedge funds
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Hedge fund side pocket investments	$ 1,700,000

Fair Value Measurements (Quanti

Fair Value Measurements (Quantitative Information Used As Level 3 Inputs) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2016USD ($)$ / bond	Dec. 31, 2015USD ($)
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Other assets and (liabilities)	$ 2,754	$ 3,463
Significant Unobservable Inputs (Level 3)
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Assets, fair value	2,776
Other assets and (liabilities)	(4,724)
Corporate | Significant Unobservable Inputs (Level 3) | Discounted Cash Flow Valuation Technique
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Assets, fair value	7,500
Fixed maturity investments | Significant Unobservable Inputs (Level 3)
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Assets, fair value	7,500
Assumed reinsurance contract | Significant Unobservable Inputs (Level 3) | Internal Valuation Model Valuation Technique
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Liabilities, fair value	$ (1,164)
Assumed reinsurance contract | Significant Unobservable Inputs (Level 3) | Internal Valuation Model Valuation Technique | Low
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Bond price | $ / bond	94.39
Assumed reinsurance contract | Significant Unobservable Inputs (Level 3) | Internal Valuation Model Valuation Technique | Maximum
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Bond price | $ / bond	99.91
Assumed reinsurance contract | Significant Unobservable Inputs (Level 3) | Internal Valuation Model Valuation Technique | Weighted Average or Actual
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Bond price | $ / bond	97.32
Liquidity discount	1.30%
Assumed and ceded (re)insurance contract | Significant Unobservable Inputs (Level 3) | Internal Valuation Model Valuation Technique
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Liabilities, fair value	$ (3,560)
Assumed and ceded (re)insurance contract | Significant Unobservable Inputs (Level 3) | Internal Valuation Model Valuation Technique | Low
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Contract period	6 months 11 days
Assumed and ceded (re)insurance contract | Significant Unobservable Inputs (Level 3) | Internal Valuation Model Valuation Technique | Maximum
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Contract period	3 years 5 days
Assumed and ceded (re)insurance contract | Significant Unobservable Inputs (Level 3) | Internal Valuation Model Valuation Technique | Weighted Average or Actual
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Net undiscounted cash flows	$ (10,725)
Expected loss ratio	13.00%
Net acquisition expense ratio	19.00%
Contract period	2 years 2 months 28 days
Discount rate	0.90%
Assumed and ceded (re)insurance contracts | Significant Unobservable Inputs (Level 3) | Internal Valuation Model Valuation Technique
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Liabilities, fair value	$ (4,724)

Fair Value Measurements (Asse43

Fair Value Measurements (Assets and Liabilities Measured at Fair Value on a Recurring Basis Using Level 3 Inputs) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at beginning of the period	$ 1,719	$ 7,026
Total unrealized (losses) gains
Included in net investment income	(118)	(26)
Total realized gains (losses)
Included in other income	1,700	1,316
Total foreign exchange gains (losses)		6
Purchases	(525)	80,421
Balance at end of the period	2,776	88,743
Net investment income
Total realized gains (losses)
Change in unrealized gains for the period included in earnings for assets held at the end of the period	(118)	(26)
Fixed maturity investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at beginning of the period	7,618	15,660
Total unrealized (losses) gains
Included in net investment income	(118)	(186)
Total realized gains (losses)
Included in other income	0	0
Total foreign exchange gains (losses)		0
Purchases	0	0
Balance at end of the period	7,500	15,474
Fixed maturity investments | Net investment income
Total realized gains (losses)
Change in unrealized gains for the period included in earnings for assets held at the end of the period	(118)	(186)
Other assets and (liabilities)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at beginning of the period	(5,899)	(8,634)
Total unrealized (losses) gains
Included in net investment income	0	160
Total realized gains (losses)
Included in other income	1,700	1,316
Total foreign exchange gains (losses)		6
Purchases	(525)	80,421
Balance at end of the period	(4,724)	73,269
Other assets and (liabilities) | Net investment income
Total realized gains (losses)
Change in unrealized gains for the period included in earnings for assets held at the end of the period	$ 0	$ 160

Fair Value Measurements (Summar

Fair Value Measurements (Summary Of The Balances Company Has Elected To Account For At Fair Value) (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Fair Value Disclosures [Abstract]
Other investments	$ 496,900	$ 481,621
Other assets	2,754	3,463
Other liabilities	$ 7,478	$ 9,362

Fair Value Measurements (Compan

Fair Value Measurements (Company's Portfolio of Other Investments Measured Using Net Asset Valuations) (Details) $ in Thousands	Mar. 31, 2016USD ($)
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value	$ 224,503
Unfunded Commitments	243,971
Private equity partnerships
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value	200,465
Unfunded Commitments	241,641
Senior secured bank loan funds
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value	22,334
Unfunded Commitments	2,330
Hedge funds
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value	1,704
Unfunded Commitments	$ 0

Reinsurance (Effect Of Reinsura

Reinsurance (Effect Of Reinsurance And Retrocessional Activity On Premiums Written And Earned And On Net Claims And Claim Expenses) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Premiums written
Direct	$ 43,176	$ 30,813
Assumed	818,957	612,765
Ceded	(350,458)	(239,543)
Net premiums written	511,675	404,035
Premiums earned
Direct	33,140	22,901
Assumed	456,641	382,603
Ceded	(136,175)	(108,744)
Net premiums earned	353,606	296,760
Claims and claim expenses
Gross claims and claim expenses incurred	161,998	88,995
Claims and claim expenses recovered	(35,393)	(12,142)
Net claims and claim expenses incurred	$ 126,605	$ 76,853

Noncontrolling Interests (Sched

Noncontrolling Interests (Schedule Of Redeemable Noncontrolling Interest) (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Activity in redeemable noncontrolling interest
Beginning balance	$ 1,045,964
Net income attributable to redeemable noncontrolling interest	44,591	$ 39,662
Ending balance	1,081,337		$ 1,045,964
DaVinciRe Holdings Ltd.
Activity in redeemable noncontrolling interest
Beginning balance	930,955	1,037,306	1,037,306
Redemption of shares from redeemable noncontrolling interest	(90,818)	(207,898)
Sale of shares to redeemable noncontrolling interest	43,040	0
Net income attributable to redeemable noncontrolling interest	42,964	38,326
Ending balance	926,141	867,734	930,955
RenaissanceRe Medici Fund Ltd.
Activity in redeemable noncontrolling interest
Beginning balance	115,009	94,402	94,402
Redemption of shares from redeemable noncontrolling interest	(940)	(14,684)	(20,100)
Sale of shares to redeemable noncontrolling interest	39,500	19,643	36,100
Net income attributable to redeemable noncontrolling interest	1,627	1,336
Ending balance	$ 155,196	$ 100,697	$ 115,009

Noncontrolling Interests (Narra

Noncontrolling Interests (Narrative) (Details) - USD ($) $ in Thousands	1 Months Ended		3 Months Ended		12 Months Ended
	Jan. 31, 2016	Jan. 31, 2015	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015	Jan. 01, 2016	Jan. 01, 2015
DaVinciRe Holdings Ltd.
Redeemable Noncontrolling Interest [Line Items]
Parent company ownership in redeemable noncontrolling interest			24.00%		26.30%		26.30%
Sale of shares to redeemable noncontrolling interest			$ 43,040	$ 0
Redemption of shares from redeemable noncontrolling interest			$ 90,818	207,898
DaVinciRe Holdings Ltd. | Redeemable Noncontrolling Interest
Redeemable Noncontrolling Interest [Line Items]
Parent company ownership in redeemable noncontrolling interest						24.00%
Redeemable noncontrolling interest, net redemptions	$ 100,000	$ 225,000
Redeemable noncontrolling interest, reserve holdback	$ 10,000	$ 22,500
DaVinciRe Holdings Ltd. | Redeemable Noncontrolling Interest | Maximum
Redeemable Noncontrolling Interest [Line Items]
Share repurchase requests, limit			25.00%
RenaissanceRe Medici Fund Ltd.
Redeemable Noncontrolling Interest [Line Items]
Parent company ownership in redeemable noncontrolling interest			39.00%		46.10%
Redemption provision, notice period			30 days
Sale of shares to redeemable noncontrolling interest			$ 39,500	19,643	$ 36,100
Redemption of shares from redeemable noncontrolling interest			$ 940	$ 14,684	$ 20,100

Variable Interest Entities (Det

Variable Interest Entities (Details) - USD ($) $ in Thousands	Jan. 01, 2016	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Variable Interest Entity [Line Items]
Contributions to subsidiaries		$ 0	$ 0
Assets		12,153,913		$ 11,555,287
Liabilities		6,311,983		5,777,139
Ceded premiums written		350,458	239,543
Ceded premiums earned		136,175	108,744
Upsilon Reinsurance Fund Opportunities Ltd. | Variable Interest Entity, Primary Beneficiary
Variable Interest Entity [Line Items]
Capital distribution payable	$ 200,500			420,200
Return of capital to date	$ 96,700			$ 418,500
Variable interest entity, ownership percentage	28.30%			21.70%
Assets		173,600		$ 250,600
Liabilities		173,500		250,500
Upsilon Reinsurance Fund Opportunities Ltd. | Variable Interest Entity, Primary Beneficiary | Non-Voting Preference Shares
Variable Interest Entity [Line Items]
Issuance of equity to third party investors	$ 62,500			153,700
Contributions to subsidiaries	25,300			42,500
Upsilon Reinsurance Fund Opportunities Ltd. | Variable Interest Entity, Primary Beneficiary | RenaissanceRe Holdings Ltd.
Variable Interest Entity [Line Items]
Capital distribution payable	41,300			132,300
Return of capital to date	$ 16,000			131,600
Mona Lisa Re Ltd | Renaissance Reinsurance Ltd.
Variable Interest Entity [Line Items]
Ceded premiums written		100	100
Ceded premiums earned		1,900	1,900
Mona Lisa Re Ltd | DaVinci Reinsurance Ltd.
Variable Interest Entity [Line Items]
Ceded premiums written		100	100
Ceded premiums earned		1,300	$ 1,300
Mona Lisa Re Ltd | Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Assets		181,200		184,000
Liabilities		$ 181,200		$ 184,000

Shareholders' Equity (Details)

Shareholders' Equity (Details) - USD ($) $ / shares in Units, shares in Thousands	Mar. 31, 2016	Mar. 15, 2016	Mar. 31, 2016	Mar. 31, 2015	Feb. 19, 2016
Class of Stock [Line Items]
Dividends declared per common share			$ 0.31	$ 0.30
Dividends declared and paid, Preference shares			$ 5,595,000	$ 5,595,000
Retained Earnings
Class of Stock [Line Items]
Dividends declared and paid, Preference shares			5,595,000	5,595,000
Dividends declared and paid, Common shares			$ 13,285,000	$ 13,720,000
Common Shares
Class of Stock [Line Items]
Dividends declared per common share		$ 0.31
Dividends per common share	$ 0.31
Share repurchase program, Authorized amount					$ 500,000,000
Common shares repurchased during period, Number of shares			769
Common shares repurchased during period, Aggregate amount			$ 85,200,000
Common shares repurchased during period, Average cost per share, in usd per share			$ 110.72
Share repurchase program, Remaining authorized aggregate amount	$ 494,100,000		$ 494,100,000

Earnings Per Share (Computation

Earnings Per Share (Computation Of Basic And Diluted Earnings Per Common Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Numerator:
Net income available to RenaissanceRe common shareholders	$ 127,995	$ 167,843
Amount allocated to participating common shareholders	(1,601)	(2,025)
Net income allocated to RenaissanceRe common shareholders	$ 126,394	$ 165,818
Denominator:
Denominator for basic income per RenaissanceRe common share - weighted average common shares	42,577	39,631
Per common share equivalents of employee stock options and restricted shares	335	390
Denominator for diluted income per RenaissanceRe common share - adjusted weighted average common shares and assumed conversions	42,912	40,021
Net income available to RenaissanceRe common shareholders per common share – basic (in usd per share)	$ 2.97	$ 4.18
Net income available to RenaissanceRe common shareholders per common share – diluted (in usd per share)	$ 2.95	$ 4.14

Segment Reporting (Schedule Of

Segment Reporting (Schedule Of Significant Components Of The Company's Revenues And Expenses) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Segment Reporting Information [Line Items]
Gross premiums written	$ 862,133	$ 643,578
Net premiums written	511,675	404,035
Net premiums earned	353,606	296,760
Net claims and claim expenses incurred	126,605	76,853
Acquisition expenses	65,592	43,401
Operational expenses	56,235	45,621
Underwriting income (loss)	105,174	130,885
Net investment income	28,863	39,707
Net foreign exchange losses	(1,692)	(3,130)
Equity in earnings of other ventures	1,611	5,295
Other income	4,079	1,539
Net realized and unrealized gains on investments	61,653	41,749
Corporate expenses	(8,225)	(45,533)
Interest expense	(10,538)	(5,316)
Income before taxes	180,925	165,196
Income tax (expense) benefit	(2,744)	47,904
Net income attributable to redeemable noncontrolling interests	(44,591)	(39,662)
Dividends on preference shares	(5,595)	(5,595)
Net income available to RenaissanceRe common shareholders	127,995	167,843
Net claims and claim expenses incurred – current accident year	128,209	98,998
Net claims and claim expenses incurred – prior accident years	(1,604)	(22,145)
Net claims and claim expenses incurred – total	$ 126,605	$ 76,853
Net claims and claim expense ratio – current accident year	36.30%	33.40%
Net claims and claim expense ratio – prior accident years	(0.50%)	(7.50%)
Net claims and claim expense ratio – calendar year	35.80%	25.90%
Underwriting expense ratio	34.50%	30.00%
Combined ratio	70.30%	55.90%
Catastrophe Reinsurance | Operating Segments
Segment Reporting Information [Line Items]
Gross premiums written	$ 360,423	$ 389,247
Net premiums written	188,785	222,640
Net premiums earned	136,985	143,767
Net claims and claim expenses incurred	7,820	7,594
Acquisition expenses	9,580	7,654
Operational expenses	20,268	20,363
Underwriting income (loss)	99,317	108,156
Net claims and claim expenses incurred – current accident year	13,883	24,124
Net claims and claim expenses incurred – prior accident years	(6,063)	(16,530)
Net claims and claim expenses incurred – total	$ 7,820	$ 7,594
Net claims and claim expense ratio – current accident year	10.10%	16.80%
Net claims and claim expense ratio – prior accident years	(4.40%)	(11.50%)
Net claims and claim expense ratio – calendar year	5.70%	5.30%
Underwriting expense ratio	21.80%	19.50%
Combined ratio	27.50%	24.80%
Specialty Reinsurance | Operating Segments
Segment Reporting Information [Line Items]
Gross premiums written	$ 368,989	$ 124,291
Net premiums written	260,091	103,915
Net premiums earned	155,318	94,876
Net claims and claim expenses incurred	91,852	39,588
Acquisition expenses	41,725	20,689
Operational expenses	21,773	13,290
Underwriting income (loss)	(32)	21,309
Net claims and claim expenses incurred – current accident year	88,378	49,264
Net claims and claim expenses incurred – prior accident years	3,474	(9,676)
Net claims and claim expenses incurred – total	$ 91,852	$ 39,588
Net claims and claim expense ratio – current accident year	56.90%	51.90%
Net claims and claim expense ratio – prior accident years	2.20%	(10.20%)
Net claims and claim expense ratio – calendar year	59.10%	41.70%
Underwriting expense ratio	40.90%	35.80%
Combined ratio	100.00%	77.50%
Lloyd's | Operating Segments
Segment Reporting Information [Line Items]
Gross premiums written	$ 132,721	$ 130,130
Net premiums written	62,799	77,569
Net premiums earned	61,303	58,206
Net claims and claim expenses incurred	27,016	29,843
Acquisition expenses	14,287	14,693
Operational expenses	14,134	11,940
Underwriting income (loss)	5,866	1,730
Net claims and claim expenses incurred – current accident year	25,948	25,610
Net claims and claim expenses incurred – prior accident years	1,068	4,233
Net claims and claim expenses incurred – total	$ 27,016	$ 29,843
Net claims and claim expense ratio – current accident year	42.30%	44.00%
Net claims and claim expense ratio – prior accident years	1.80%	7.30%
Net claims and claim expense ratio – calendar year	44.10%	51.30%
Underwriting expense ratio	46.30%	45.70%
Combined ratio	90.40%	97.00%
Other | Operating Segments
Segment Reporting Information [Line Items]
Gross premiums written	$ 0	$ (90)
Net premiums written	0	(89)
Net premiums earned	0	(89)
Net claims and claim expenses incurred	(83)	(172)
Acquisition expenses	0	365
Operational expenses	60	28
Underwriting income (loss)	23	(310)
Net investment income	28,863	39,707
Net foreign exchange losses	(1,692)	(3,130)
Equity in earnings of other ventures	1,611	5,295
Other income	4,079	1,539
Net realized and unrealized gains on investments	61,653	41,749
Corporate expenses	(8,225)	(45,533)
Interest expense	(10,538)	(5,316)
Income tax (expense) benefit	(2,744)	47,904
Net income attributable to redeemable noncontrolling interests	(44,591)	(39,662)
Dividends on preference shares	(5,595)	(5,595)
Net claims and claim expenses incurred – current accident year	0	0
Net claims and claim expenses incurred – prior accident years	(83)	(172)
Net claims and claim expenses incurred – total	$ (83)	(172)
Intersegment Eliminations
Segment Reporting Information [Line Items]
Gross premiums written		$ 100

Derivative Instruments (Consoli

Derivative Instruments (Consolidated Balance Sheets And Fair Value Of The Principal Derivative Instruments) (Details) - Not Designated as Hedging Instrument - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Other Assets
Derivative Assets
Gross Amounts of Recognized Assets	$ 6,726	$ 6,968
Gross Amounts Offset in the Balance Sheet	1,608	1,662
Net Amounts of Assets Presented in the Balance Sheet	5,118	5,306
Collateral	0	0
Net Amount	5,118	5,306
Other Assets | Interest Rate Contracts
Derivative Assets
Gross Amounts of Recognized Assets	1,451	1,059
Gross Amounts Offset in the Balance Sheet	1,320	937
Net Amounts of Assets Presented in the Balance Sheet	131	122
Collateral	0	0
Net Amount	131	122
Other Assets | Foreign Currency Forward Contracts, Underwriting and Non-investment Operations
Derivative Assets
Gross Amounts of Recognized Assets	5,041	4,645
Gross Amounts Offset in the Balance Sheet	89	82
Net Amounts of Assets Presented in the Balance Sheet	4,952	4,563
Collateral	0	0
Net Amount	4,952	4,563
Other Assets | Foreign Currency Forward Contracts, Investment Operations
Derivative Assets
Gross Amounts of Recognized Assets	231	1,007
Gross Amounts Offset in the Balance Sheet	198	599
Net Amounts of Assets Presented in the Balance Sheet	33	408
Collateral	0	0
Net Amount	33	408
Other Assets | Credit Default Swaps
Derivative Assets
Gross Amounts of Recognized Assets	3	257
Gross Amounts Offset in the Balance Sheet	1	44
Net Amounts of Assets Presented in the Balance Sheet	2	213
Collateral	0	0
Net Amount	2	213
Other Liabilities
Derivative Liabilities
Gross Amounts of Recognized Liabilities	13,149	5,481
Gross Amounts Offset in the Balance Sheet	2,123	1,661
Net Amounts of Liabilities Presented in the Balance Sheet	11,026	3,820
Collateral Pledged	1,947	1,803
Net Amount	9,079	2,017
Other Liabilities | Interest Rate Contracts
Derivative Liabilities
Gross Amounts of Recognized Liabilities	2,941	2,293
Gross Amounts Offset in the Balance Sheet	1,320	937
Net Amounts of Liabilities Presented in the Balance Sheet	1,621	1,356
Collateral Pledged	1,621	1,356
Net Amount	0	0
Other Liabilities | Foreign Currency Forward Contracts, Underwriting and Non-investment Operations
Derivative Liabilities
Gross Amounts of Recognized Liabilities	6,979	1,891
Gross Amounts Offset in the Balance Sheet	604	81
Net Amounts of Liabilities Presented in the Balance Sheet	6,375	1,810
Collateral Pledged	0	0
Net Amount	6,375	1,810
Other Liabilities | Foreign Currency Forward Contracts, Investment Operations
Derivative Liabilities
Gross Amounts of Recognized Liabilities	2,902	806
Gross Amounts Offset in the Balance Sheet	198	599
Net Amounts of Liabilities Presented in the Balance Sheet	2,704	207
Collateral Pledged	0	0
Net Amount	2,704	207
Other Liabilities | Credit Default Swaps
Derivative Liabilities
Gross Amounts of Recognized Liabilities	327	491
Gross Amounts Offset in the Balance Sheet	1	44
Net Amounts of Liabilities Presented in the Balance Sheet	326	447
Collateral Pledged	326	447
Net Amount	$ 0	$ 0

Derivative Instruments (Gain (L

Derivative Instruments (Gain (Loss) Recognized In The Consolidated Statements Of Operations Related To Its Derivative Instruments) (Details) - Not Designated as Hedging Instrument - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized on derivatives	$ (26,681)	$ 8,613
Net realized and unrealized gains on investments | Interest Rate Contracts
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized on derivatives	(19,359)	(4,408)
Net realized and unrealized gains on investments | Credit Default Swaps
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized on derivatives	(90)	40
Net realized and unrealized gains on investments | Weather Contract
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized on derivatives	0	160
Net foreign exchange losses | Foreign Currency Forward Contracts, Underwriting and Non-investment Operations
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized on derivatives	(1,374)	3,611
Net foreign exchange losses | Foreign Currency Forward Contracts, Investment Operations
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized on derivatives	$ (5,858)	$ 9,210

Derivative Instruments (Narrati

Derivative Instruments (Narrative) (Details) - Not Designated as Hedging Instrument - USD ($)	Mar. 31, 2016	Dec. 31, 2015
Other Assets
Derivative [Line Items]
Derivative Asset	$ 5,118,000	$ 5,306,000
Interest Rate Contracts | Other Assets
Derivative [Line Items]
Derivative Asset	131,000	122,000
Interest Rate Contracts | Long
Derivative [Line Items]
Derivative, Notional Amount	978,600,000	1,012,500,000
Interest Rate Contracts | Short
Derivative [Line Items]
Derivative, Notional Amount	1,140,800,000	1,115,900,000
Foreign Currency Forward Contracts, Underwriting and Non-investment Operations | Other Assets
Derivative [Line Items]
Derivative Asset	4,952,000	4,563,000
Foreign Currency Forward Contracts, Underwriting and Non-investment Operations | Long
Derivative [Line Items]
Derivative, Notional Amount	235,900,000	172,400,000
Foreign Currency Forward Contracts, Underwriting and Non-investment Operations | Short
Derivative [Line Items]
Derivative, Notional Amount	178,900,000	101,500,000
Foreign Currency Forward Contracts, Investment Operations | Other Assets
Derivative [Line Items]
Derivative Asset	33,000	408,000
Foreign Currency Forward Contracts, Investment Operations | Long
Derivative [Line Items]
Derivative, Notional Amount	13,000,000	31,300,000
Foreign Currency Forward Contracts, Investment Operations | Short
Derivative [Line Items]
Derivative, Notional Amount	143,300,000	143,400,000
Credit Default Swaps | Other Assets
Derivative [Line Items]
Derivative Asset	2,000	213,000
Credit Default Swaps | Long
Derivative [Line Items]
Derivative, Notional Amount	0	0
Credit Default Swaps | Short
Derivative [Line Items]
Derivative, Notional Amount	$ 10,700,000	$ 46,100,000

Condensed Consolidating Finan56

Condensed Consolidating Financial Information Provided In Connection With Outstanding Debt Of Subsidiaries (Condensed Consolidating Balance Sheet) (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015	Mar. 31, 2015	Dec. 31, 2014
Assets
Total investments	$ 9,040,201	$ 8,999,068
Cash and cash equivalents	449,149	506,885	$ 557,618	$ 525,584
Investments in subsidiaries	0	0
Due from subsidiaries and affiliates	0	0
Premiums receivable	1,094,116	778,009
Prepaid reinsurance premiums	444,954	230,671
Reinsurance recoverable	167,228	134,526
Accrued investment income	37,492	39,749
Deferred acquisition costs	287,291	199,380
Receivable for investments sold	204,306	220,834
Other assets	167,514	181,011
Goodwill and other intangible assets	261,662	265,154
Total assets	12,153,913	11,555,287
Liabilities
Reserve for claims and claim expenses	2,811,523	2,767,045
Unearned premiums	1,261,454	889,102
Debt	957,536	960,495
Amounts due to subsidiaries and affiliates	0	0
Reinsurance balances payable	618,344	523,974
Payable for investments purchased	454,593	391,378
Other liabilities	208,533	245,145
Total liabilities	6,311,983	5,777,139
Redeemable noncontrolling interests	1,081,337	1,045,964
Shareholders' Equity
Total shareholders’ equity	4,760,593	4,732,184
Total liabilities, noncontrolling interests and shareholders’ equity	12,153,913	11,555,287
RenaissanceRe Holdings Ltd. (Parent Guarantor)
Assets
Total investments	363,935	349,892
Cash and cash equivalents	5,106	10,185	68,142	5,986
Investments in subsidiaries	3,886,801	3,902,519
Due from subsidiaries and affiliates	166,761	81,282
Premiums receivable	0	0
Prepaid reinsurance premiums	0	0
Reinsurance recoverable	0	0
Accrued investment income	1,505	1,253
Deferred acquisition costs	0	0
Receivable for investments sold	19	26
Other assets	396,973	390,302
Goodwill and other intangible assets	135,400	137,064
Total assets	4,956,500	4,872,523
Liabilities
Reserve for claims and claim expenses	0	0
Unearned premiums	0	0
Debt	117,000	117,000
Amounts due to subsidiaries and affiliates	70,981	2,641
Reinsurance balances payable	0	0
Payable for investments purchased	0	999
Other liabilities	7,926	19,699
Total liabilities	195,907	140,339
Redeemable noncontrolling interests	0	0
Shareholders' Equity
Total shareholders’ equity	4,760,593	4,732,184
Total liabilities, noncontrolling interests and shareholders’ equity	4,956,500	4,872,523
RenRe North America Holdings Inc. (Subsidiary Issuer)
Assets
Total investments	122,378	127,087
Cash and cash equivalents	265	5,908	329	1,033
Investments in subsidiaries	45,715	48,754
Due from subsidiaries and affiliates	83,978	69,739
Premiums receivable	0	0
Prepaid reinsurance premiums	0	0
Reinsurance recoverable	0	0
Accrued investment income	257	169
Deferred acquisition costs	0	0
Receivable for investments sold	9	1
Other assets	28,749	29,532
Goodwill and other intangible assets	0	0
Total assets	281,351	281,190
Liabilities
Reserve for claims and claim expenses	0	0
Unearned premiums	0	0
Debt	0	0
Amounts due to subsidiaries and affiliates	199	202
Reinsurance balances payable	0	0
Payable for investments purchased	48	6
Other liabilities	205	1,148
Total liabilities	452	1,356
Redeemable noncontrolling interests	0	0
Shareholders' Equity
Total shareholders’ equity	280,899	279,834
Total liabilities, noncontrolling interests and shareholders’ equity	281,351	281,190
Platinum Underwriters Finance, Inc. (Subsidiary Issuer)
Assets
Total investments	300,411	205,777
Cash and cash equivalents	2,233	7,103	1,229	0
Investments in subsidiaries	890,244	867,909
Due from subsidiaries and affiliates	0	0
Premiums receivable	0	0
Prepaid reinsurance premiums	0	0
Reinsurance recoverable	0	0
Accrued investment income	464	348
Deferred acquisition costs	0	0
Receivable for investments sold	28	68,537
Other assets	12,510	12,852
Goodwill and other intangible assets	0	0
Total assets	1,205,890	1,162,526
Liabilities
Reserve for claims and claim expenses	0	0
Unearned premiums	0	0
Debt	264,985	268,196
Amounts due to subsidiaries and affiliates	343	204
Reinsurance balances payable	0	0
Payable for investments purchased	14,852	25
Other liabilities	14,370	6,620
Total liabilities	294,550	275,045
Redeemable noncontrolling interests	0	0
Shareholders' Equity
Total shareholders’ equity	911,340	887,481
Total liabilities, noncontrolling interests and shareholders’ equity	1,205,890	1,162,526
RenaissanceRe Finance, Inc. (Subsidiary Issuer)
Assets
Total investments	0	0
Cash and cash equivalents	6,443	677	451	0
Investments in subsidiaries	1,210,210	1,185,736
Due from subsidiaries and affiliates	0	0
Premiums receivable	0	0
Prepaid reinsurance premiums	0	0
Reinsurance recoverable	0	0
Accrued investment income	0	0
Deferred acquisition costs	0	0
Receivable for investments sold	0	0
Other assets	126,958	115,456
Goodwill and other intangible assets	0	0
Total assets	1,343,611	1,301,869
Liabilities
Reserve for claims and claim expenses	0	0
Unearned premiums	0	0
Debt	545,363	545,187
Amounts due to subsidiaries and affiliates	89,183	68,204
Reinsurance balances payable	0	0
Payable for investments purchased	0	0
Other liabilities	6,648	0
Total liabilities	641,194	613,391
Redeemable noncontrolling interests	0	0
Shareholders' Equity
Total shareholders’ equity	702,417	688,478
Total liabilities, noncontrolling interests and shareholders’ equity	1,343,611	1,301,869
Other RenaissanceRe Holdings Ltd. Subsidiaries And Eliminations (Non-Guarantor Subsidiaries)
Assets
Total investments	8,253,477	8,316,312
Cash and cash equivalents	435,102	483,012	$ 487,467	$ 518,565
Investments in subsidiaries	0	0
Due from subsidiaries and affiliates	0	0
Premiums receivable	1,094,116	778,009
Prepaid reinsurance premiums	444,954	230,671
Reinsurance recoverable	167,228	134,526
Accrued investment income	35,266	37,979
Deferred acquisition costs	287,291	199,380
Receivable for investments sold	204,250	152,270
Other assets	110,121	124,215
Goodwill and other intangible assets	126,262	128,090
Total assets	11,158,067	10,584,464
Liabilities
Reserve for claims and claim expenses	2,811,523	2,767,045
Unearned premiums	1,261,454	889,102
Debt	147,188	147,112
Amounts due to subsidiaries and affiliates	0	0
Reinsurance balances payable	618,344	523,974
Payable for investments purchased	439,693	390,348
Other liabilities	194,735	222,320
Total liabilities	5,472,937	4,939,901
Redeemable noncontrolling interests	1,081,337	1,045,964
Shareholders' Equity
Total shareholders’ equity	4,603,793	4,598,599
Total liabilities, noncontrolling interests and shareholders’ equity	11,158,067	10,584,464
Consolidating Adjustments
Assets
Total investments	0	0
Cash and cash equivalents	0	0
Investments in subsidiaries	(6,032,970)	(6,004,918)
Due from subsidiaries and affiliates	(250,739)	(151,021)
Premiums receivable	0	0
Prepaid reinsurance premiums	0	0
Reinsurance recoverable	0	0
Accrued investment income	0	0
Deferred acquisition costs	0	0
Receivable for investments sold	0	0
Other assets	(507,797)	(491,346)
Goodwill and other intangible assets	0	0
Total assets	(6,791,506)	(6,647,285)
Liabilities
Reserve for claims and claim expenses	0	0
Unearned premiums	0	0
Debt	(117,000)	(117,000)
Amounts due to subsidiaries and affiliates	(160,706)	(71,251)
Reinsurance balances payable	0	0
Payable for investments purchased	0	0
Other liabilities	(15,351)	(4,642)
Total liabilities	(293,057)	(192,893)
Redeemable noncontrolling interests	0	0
Shareholders' Equity
Total shareholders’ equity	(6,498,449)	(6,454,392)
Total liabilities, noncontrolling interests and shareholders’ equity	$ (6,791,506)	$ (6,647,285)

Condensed Consolidating Finan57

Condensed Consolidating Financial Information Provided In Connection With Outstanding Debt Of Subsidiaries (Condensed Consolidating Statement Of Operations) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Revenues
Net premiums earned	$ 353,606	$ 296,760
Net investment income	28,863	39,707
Net foreign exchange losses	(1,692)	(3,130)
Equity in earnings of other ventures	1,611	5,295
Other income (loss)	4,079	1,539
Net realized and unrealized gains (losses) on investments	61,653	41,749
Total revenues	448,120	381,920
Expenses
Net claims and claim expenses incurred	126,605	76,853
Acquisition expenses	65,592	43,401
Operational expenses	56,235	45,621
Corporate expenses	8,225	45,533
Interest expense	10,538	5,316
Total expenses	267,195	216,724
(Loss) income before equity in net income (loss) of subsidiaries and taxes	180,925	165,196
Equity in net income (loss) of subsidiaries	0	0
Income before taxes	180,925	165,196
Income tax (expense) benefit	(2,744)	47,904
Net income	178,181	213,100
Net income attributable to noncontrolling interests	(44,591)	(39,662)
Net income attributable to RenaissanceRe	133,590	173,438
Dividends on preference shares	(5,595)	(5,595)
Net income available to RenaissanceRe common shareholders	127,995	167,843
RenaissanceRe Holdings Ltd. (Parent Guarantor)
Revenues
Net premiums earned	0	0
Net investment income	6,858	2,624
Net foreign exchange losses	(1)	(10)
Equity in earnings of other ventures	0	0
Other income (loss)	0	166
Net realized and unrealized gains (losses) on investments	4,488	39
Total revenues	11,345	2,819
Expenses
Net claims and claim expenses incurred	0	0
Acquisition expenses	0	0
Operational expenses	(701)	3,809
Corporate expenses	5,613	24,486
Interest expense	140	295
Total expenses	5,052	28,590
(Loss) income before equity in net income (loss) of subsidiaries and taxes	6,293	(25,771)
Equity in net income (loss) of subsidiaries	123,538	200,945
Income before taxes	129,831	175,174
Income tax (expense) benefit	3,759	(1,736)
Net income	133,590	173,438
Net income attributable to noncontrolling interests	0	0
Net income attributable to RenaissanceRe	133,590	173,438
Dividends on preference shares	(5,595)	(5,595)
Net income available to RenaissanceRe common shareholders	127,995	167,843
RenRe North America Holdings Inc. (Subsidiary Issuer)
Revenues
Net premiums earned	0	0
Net investment income	509	331
Net foreign exchange losses	0	0
Equity in earnings of other ventures	0	0
Other income (loss)	0	0
Net realized and unrealized gains (losses) on investments	1,115	406
Total revenues	1,624	737
Expenses
Net claims and claim expenses incurred	0	0
Acquisition expenses	0	0
Operational expenses	(141)	1,890
Corporate expenses	0	39
Interest expense	0	3,676
Total expenses	(141)	5,605
(Loss) income before equity in net income (loss) of subsidiaries and taxes	1,765	(4,868)
Equity in net income (loss) of subsidiaries	(133)	3,416
Income before taxes	1,632	(1,452)
Income tax (expense) benefit	(561)	31,005
Net income	1,071	29,553
Net income attributable to noncontrolling interests	0	0
Net income attributable to RenaissanceRe	1,071	29,553
Dividends on preference shares	0	0
Net income available to RenaissanceRe common shareholders	1,071	29,553
Platinum Underwriters Finance, Inc. (Subsidiary Issuer)
Revenues
Net premiums earned	0	0
Net investment income	1,433	(40)
Net foreign exchange losses	0	0
Equity in earnings of other ventures	0	0
Other income (loss)	0	0
Net realized and unrealized gains (losses) on investments	1,964	1
Total revenues	3,397	(39)
Expenses
Net claims and claim expenses incurred	0	0
Acquisition expenses	0	0
Operational expenses	52	1
Corporate expenses	0	0
Interest expense	1,476	492
Total expenses	1,528	493
(Loss) income before equity in net income (loss) of subsidiaries and taxes	1,869	(532)
Equity in net income (loss) of subsidiaries	22,335	1,410
Income before taxes	24,204	878
Income tax (expense) benefit	(344)	(695)
Net income	23,860	183
Net income attributable to noncontrolling interests	0	0
Net income attributable to RenaissanceRe	23,860	183
Dividends on preference shares	0	0
Net income available to RenaissanceRe common shareholders	23,860	183
RenaissanceRe Finance, Inc. (Subsidiary Issuer)
Revenues
Net premiums earned	0	0
Net investment income	140	36
Net foreign exchange losses	0	0
Equity in earnings of other ventures	0	0
Other income (loss)	0	0
Net realized and unrealized gains (losses) on investments	0	0
Total revenues	140	36
Expenses
Net claims and claim expenses incurred	0	0
Acquisition expenses	0	0
Operational expenses	7,009	0
Corporate expenses	0	0
Interest expense	6,543	222
Total expenses	13,552	222
(Loss) income before equity in net income (loss) of subsidiaries and taxes	(13,412)	(186)
Equity in net income (loss) of subsidiaries	24,479	43,902
Income before taxes	11,067	43,716
Income tax (expense) benefit	2,879	65
Net income	13,946	43,781
Net income attributable to noncontrolling interests	0	0
Net income attributable to RenaissanceRe	13,946	43,781
Dividends on preference shares	0	0
Net income available to RenaissanceRe common shareholders	13,946	43,781
Other RenaissanceRe Holdings Ltd. Subsidiaries And Eliminations (Non-Guarantor Subsidiaries)
Revenues
Net premiums earned	353,606	296,760
Net investment income	25,806	37,730
Net foreign exchange losses	(1,691)	(3,120)
Equity in earnings of other ventures	1,611	5,295
Other income (loss)	4,079	1,538
Net realized and unrealized gains (losses) on investments	54,086	41,303
Total revenues	437,497	379,506
Expenses
Net claims and claim expenses incurred	126,605	76,853
Acquisition expenses	65,592	43,401
Operational expenses	55,096	39,920
Corporate expenses	2,612	21,008
Interest expense	2,519	667
Total expenses	252,424	181,849
(Loss) income before equity in net income (loss) of subsidiaries and taxes	185,073	197,657
Equity in net income (loss) of subsidiaries	0	0
Income before taxes	185,073	197,657
Income tax (expense) benefit	(8,477)	19,265
Net income	176,596	216,922
Net income attributable to noncontrolling interests	(44,591)	(39,662)
Net income attributable to RenaissanceRe	132,005	177,260
Dividends on preference shares	0	0
Net income available to RenaissanceRe common shareholders	132,005	177,260
Consolidating Adjustments
Revenues
Net premiums earned	0	0
Net investment income	(5,883)	(974)
Net foreign exchange losses	0	0
Equity in earnings of other ventures	0	0
Other income (loss)	0	(165)
Net realized and unrealized gains (losses) on investments	0	0
Total revenues	(5,883)	(1,139)
Expenses
Net claims and claim expenses incurred	0	0
Acquisition expenses	0	0
Operational expenses	(5,080)	1
Corporate expenses	0	0
Interest expense	(140)	(36)
Total expenses	(5,220)	(35)
(Loss) income before equity in net income (loss) of subsidiaries and taxes	(663)	(1,104)
Equity in net income (loss) of subsidiaries	(170,219)	(249,673)
Income before taxes	(170,882)	(250,777)
Income tax (expense) benefit	0	0
Net income	(170,882)	(250,777)
Net income attributable to noncontrolling interests	0	0
Net income attributable to RenaissanceRe	(170,882)	(250,777)
Dividends on preference shares	0	0
Net income available to RenaissanceRe common shareholders	$ (170,882)	$ (250,777)

Condensed Consolidating Finan58

Condensed Consolidating Financial Information Provided In Connection With Outstanding Debt Of Subsidiaries (Condensed Consolidating Statement of Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Condensed Financial Statements, Captions [Line Items]
Net income	$ 178,181	$ 213,100
Change in net unrealized gains on investments	(443)	(74)
Comprehensive income	177,738	213,026
Net income attributable to redeemable noncontrolling interests	(44,591)	(39,662)
Comprehensive income attributable to noncontrolling interests	(44,591)	(39,662)
Comprehensive income attributable to RenaissanceRe	133,147	173,364
RenaissanceRe Holdings Ltd. (Parent Guarantor)
Condensed Financial Statements, Captions [Line Items]
Net income	133,590	173,438
Change in net unrealized gains on investments	0	0
Comprehensive income	133,590	173,438
Net income attributable to redeemable noncontrolling interests	0	0
Comprehensive income attributable to noncontrolling interests	0	0
Comprehensive income attributable to RenaissanceRe	133,590	173,438
RenRe North America Holdings Inc. (Subsidiary Issuer)
Condensed Financial Statements, Captions [Line Items]
Net income	1,071	29,553
Change in net unrealized gains on investments	0	0
Comprehensive income	1,071	29,553
Net income attributable to redeemable noncontrolling interests	0	0
Comprehensive income attributable to noncontrolling interests	0	0
Comprehensive income attributable to RenaissanceRe	1,071	29,553
Platinum Underwriters Finance, Inc. (Subsidiary Issuer)
Condensed Financial Statements, Captions [Line Items]
Net income	23,860	183
Change in net unrealized gains on investments	0	0
Comprehensive income	23,860	183
Net income attributable to redeemable noncontrolling interests	0	0
Comprehensive income attributable to noncontrolling interests	0	0
Comprehensive income attributable to RenaissanceRe	23,860	183
RenaissanceRe Finance, Inc. (Subsidiary Issuer)
Condensed Financial Statements, Captions [Line Items]
Net income	13,946	43,781
Change in net unrealized gains on investments	0	0
Comprehensive income	13,946	43,781
Net income attributable to redeemable noncontrolling interests	0	0
Comprehensive income attributable to noncontrolling interests	0	0
Comprehensive income attributable to RenaissanceRe	13,946	43,781
Other RenaissanceRe Holdings Ltd. Subsidiaries And Eliminations (Non-Guarantor Subsidiaries)
Condensed Financial Statements, Captions [Line Items]
Net income	176,596	216,922
Change in net unrealized gains on investments	(443)	(74)
Comprehensive income	176,153	216,848
Net income attributable to redeemable noncontrolling interests	(44,591)	(39,662)
Comprehensive income attributable to noncontrolling interests	(44,591)	(39,662)
Comprehensive income attributable to RenaissanceRe	131,562	177,186
Consolidating Adjustments
Condensed Financial Statements, Captions [Line Items]
Net income	(170,882)	(250,777)
Change in net unrealized gains on investments	0	0
Comprehensive income	(170,882)	(250,777)
Net income attributable to redeemable noncontrolling interests	0	0
Comprehensive income attributable to noncontrolling interests	0	0
Comprehensive income attributable to RenaissanceRe	$ (170,882)	$ (250,777)

Condensed Consolidating Finan59

Condensed Consolidating Financial Information Provided In Connection With Outstanding Debt Of Subsidiaries (Condensed Consolidating Statement Of Cash Flows) (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Cash flows (used in) provided by operating activities:
Net cash (used in) provided by operating activities	$ (9,707)	$ (118,605)
Cash flows provided by investing activities
Proceeds from sales and maturities of fixed maturity investments trading	2,540,073	2,075,678
Purchases of fixed maturity investments trading	(2,656,283)	(1,490,123)
Proceeds from sales and maturities of fixed maturity investments available for sale	3,662	1,757
Net sales (purchases) of equity investments trading	119,369	50,627
Net sales (purchases) of short term investments	134,009	112,795
Net purchases of other investments	(39,698)	(7,952)
Net purchases of investments in other ventures	0	(126)
Net purchases of other assets	0	(2,500)
Dividends and return of capital from subsidiaries	0	0
Contributions to subsidiaries	0	0
Due to (from) subsidiary	0	0
Net purchase of Platinum	0	(678,152)
Net cash provided by investing activities	101,132	62,004
Cash flows provided by (used in) financing activities
Dividends paid – RenaissanceRe common shares	(13,285)	(13,720)
Dividends paid – preference shares	(5,595)	(5,595)
RenaissanceRe common share repurchases	(85,166)	(446)
Net issuance (repayment) of debt	0	297,823
Net third party redeemable noncontrolling interest share transactions	(50,374)	(180,285)
Net cash (used in) provided by financing activities	(154,420)	97,777
Effect of exchange rate changes on foreign currency cash	5,259	(9,142)
Net (decrease) increase in cash and cash equivalents	(57,736)	32,034
Cash and cash equivalents, beginning of period	506,885	525,584	$ 525,584
Cash and cash equivalents, end of period	449,149	557,618	506,885
RenaissanceRe Holdings Ltd. (Parent Guarantor)
Cash flows (used in) provided by operating activities:
Net cash (used in) provided by operating activities	(12,542)	(28,333)
Cash flows provided by investing activities
Proceeds from sales and maturities of fixed maturity investments trading	80,763	0
Purchases of fixed maturity investments trading	(195,141)	0
Proceeds from sales and maturities of fixed maturity investments available for sale	0	0
Net sales (purchases) of equity investments trading	0	0
Net sales (purchases) of short term investments	104,213	44,839
Net purchases of other investments	0	0
Net purchases of investments in other ventures		0
Net purchases of other assets		0
Dividends and return of capital from subsidiaries	118,544	704,691
Contributions to subsidiaries	(19,924)	148,147
Due to (from) subsidiary	23,054	117,006
Net purchase of Platinum		(904,433)
Net cash provided by investing activities	111,509	110,250
Cash flows provided by (used in) financing activities
Dividends paid – RenaissanceRe common shares	(13,285)	(13,720)
Dividends paid – preference shares	(5,595)	(5,595)
RenaissanceRe common share repurchases	(85,166)	(446)
Net issuance (repayment) of debt		0
Net third party redeemable noncontrolling interest share transactions	0	0
Net cash (used in) provided by financing activities	(104,046)	(19,761)
Effect of exchange rate changes on foreign currency cash	0	0
Net (decrease) increase in cash and cash equivalents	(5,079)	62,156
Cash and cash equivalents, beginning of period	10,185	5,986	5,986
Cash and cash equivalents, end of period	5,106	68,142	10,185
RenRe North America Holdings Inc. (Subsidiary Issuer)
Cash flows (used in) provided by operating activities:
Net cash (used in) provided by operating activities	(332)	(13,573)
Cash flows provided by investing activities
Proceeds from sales and maturities of fixed maturity investments trading	25,376	5,007
Purchases of fixed maturity investments trading	(82,697)	0
Proceeds from sales and maturities of fixed maturity investments available for sale	0	0
Net sales (purchases) of equity investments trading	158	13,763
Net sales (purchases) of short term investments	63,194	(5,848)
Net purchases of other investments	0	0
Net purchases of investments in other ventures		0
Net purchases of other assets		0
Dividends and return of capital from subsidiaries	2,900	180,000
Contributions to subsidiaries	0	0
Due to (from) subsidiary	(14,242)	(180,053)
Net purchase of Platinum		0
Net cash provided by investing activities	(5,311)	12,869
Cash flows provided by (used in) financing activities
Dividends paid – RenaissanceRe common shares	0	0
Dividends paid – preference shares	0	0
RenaissanceRe common share repurchases	0	0
Net issuance (repayment) of debt		0
Net third party redeemable noncontrolling interest share transactions	0	0
Net cash (used in) provided by financing activities	0	0
Effect of exchange rate changes on foreign currency cash	0	0
Net (decrease) increase in cash and cash equivalents	(5,643)	(704)
Cash and cash equivalents, beginning of period	5,908	1,033	1,033
Cash and cash equivalents, end of period	265	329	5,908
Platinum Underwriters Finance, Inc. (Subsidiary Issuer)
Cash flows (used in) provided by operating activities:
Net cash (used in) provided by operating activities	4,561	(295)
Cash flows provided by investing activities
Proceeds from sales and maturities of fixed maturity investments trading	20,566	45,029
Purchases of fixed maturity investments trading	(135,561)	0
Proceeds from sales and maturities of fixed maturity investments available for sale	0	0
Net sales (purchases) of equity investments trading	138,834	0
Net sales (purchases) of short term investments	(33,409)	(45,042)
Net purchases of other investments	0	0
Net purchases of investments in other ventures		0
Net purchases of other assets		0
Dividends and return of capital from subsidiaries	0	0
Contributions to subsidiaries	0	0
Due to (from) subsidiary	139	0
Net purchase of Platinum		1,537
Net cash provided by investing activities	(9,431)	1,524
Cash flows provided by (used in) financing activities
Dividends paid – RenaissanceRe common shares	0	0
Dividends paid – preference shares	0	0
RenaissanceRe common share repurchases	0	0
Net issuance (repayment) of debt		0
Net third party redeemable noncontrolling interest share transactions	0	0
Net cash (used in) provided by financing activities	0	0
Effect of exchange rate changes on foreign currency cash	0	0
Net (decrease) increase in cash and cash equivalents	(4,870)	1,229
Cash and cash equivalents, beginning of period	7,103	0	0
Cash and cash equivalents, end of period	2,233	1,229	7,103
RenaissanceRe Finance, Inc. (Subsidiary Issuer)
Cash flows (used in) provided by operating activities:
Net cash (used in) provided by operating activities	(15,213)	(2,176)
Cash flows provided by investing activities
Proceeds from sales and maturities of fixed maturity investments trading	0	0
Purchases of fixed maturity investments trading	0	0
Proceeds from sales and maturities of fixed maturity investments available for sale	0	0
Net sales (purchases) of equity investments trading	0	0
Net sales (purchases) of short term investments	0	0
Net purchases of other investments	0	0
Net purchases of investments in other ventures		0
Net purchases of other assets		0
Dividends and return of capital from subsidiaries	0	0
Contributions to subsidiaries	0	(180,000)
Due to (from) subsidiary	20,979	(116,773)
Net purchase of Platinum		0
Net cash provided by investing activities	20,979	(296,773)
Cash flows provided by (used in) financing activities
Dividends paid – RenaissanceRe common shares	0	0
Dividends paid – preference shares	0	0
RenaissanceRe common share repurchases	0	0
Net issuance (repayment) of debt		299,400
Net third party redeemable noncontrolling interest share transactions	0	0
Net cash (used in) provided by financing activities	0	299,400
Effect of exchange rate changes on foreign currency cash	0	0
Net (decrease) increase in cash and cash equivalents	5,766	451
Cash and cash equivalents, beginning of period	677	0	0
Cash and cash equivalents, end of period	6,443	451	677
Other RenaissanceRe Holdings Ltd. Subsidiaries And Eliminations (Non-Guarantor Subsidiaries)
Cash flows (used in) provided by operating activities:
Net cash (used in) provided by operating activities	13,819	(74,228)
Cash flows provided by investing activities
Proceeds from sales and maturities of fixed maturity investments trading	2,413,368	2,025,642
Purchases of fixed maturity investments trading	(2,242,884)	(1,490,123)
Proceeds from sales and maturities of fixed maturity investments available for sale	3,662	1,757
Net sales (purchases) of equity investments trading	(19,623)	36,864
Net sales (purchases) of short term investments	11	118,846
Net purchases of other investments	(39,698)	(7,952)
Net purchases of investments in other ventures		(126)
Net purchases of other assets		(2,500)
Dividends and return of capital from subsidiaries	(121,444)	(884,691)
Contributions to subsidiaries	19,924	31,853
Due to (from) subsidiary	(29,930)	179,820
Net purchase of Platinum		224,744
Net cash provided by investing activities	(16,614)	234,134
Cash flows provided by (used in) financing activities
Dividends paid – RenaissanceRe common shares	0	0
Dividends paid – preference shares	0	0
RenaissanceRe common share repurchases	0	0
Net issuance (repayment) of debt		(1,577)
Net third party redeemable noncontrolling interest share transactions	(50,374)	(180,285)
Net cash (used in) provided by financing activities	(50,374)	(181,862)
Effect of exchange rate changes on foreign currency cash	5,259	(9,142)
Net (decrease) increase in cash and cash equivalents	(47,910)	(31,098)
Cash and cash equivalents, beginning of period	483,012	518,565	518,565
Cash and cash equivalents, end of period	$ 435,102	$ 487,467	$ 483,012