RenaissanceRe (RNR) 10-Q 29 Jul 15 2015 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2015	Jul. 27, 2015
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	Jun. 30, 2015
Document Fiscal Year Focus	2,015
Document Fiscal Period Focus	Q2
Amendment Flag	false
Entity Common Stock, Shares Outstanding		45,943,499

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Assets
Fixed maturity investments trading, at fair value (Amortized cost $6,603,492 and $4,749,613 at June 30, 2015 and December 31, 2014, respectively)	$ 6,591,434	$ 4,756,685
Fixed maturity investments available for sale, at fair value (Amortized cost $19,384 and $23,772 at June 30, 2015 and December 31, 2014, respectively)	21,754	26,885
Short term investments, at fair value	1,543,191	1,013,222
Equity investments trading, at fair value	493,056	322,098
Other investments, at fair value	504,693	504,147
Investments in other ventures, under equity method	126,139	120,713
Total investments	9,280,267	6,743,750
Cash and cash equivalents	398,090	525,584
Premiums receivable	1,068,819	440,007
Prepaid reinsurance premiums	276,231	94,810
Reinsurance recoverable	136,464	66,694
Accrued investment income	37,480	26,509
Deferred acquisition costs	173,408	110,059
Receivable for investments sold	149,063	52,390
Other assets	257,621	135,845
Goodwill and other intangible assets	275,743	7,902
Total assets	12,053,186	8,203,550
Liabilities
Reserve for claims and claim expenses	2,847,648	1,412,510
Unearned premiums	1,155,596	512,386
Debt	972,362	249,522
Reinsurance balances payable	512,019	454,580
Payable for investments purchased	511,251	203,021
Other liabilities	228,554	374,108
Total liabilities	$ 6,227,430	$ 3,206,127
Commitments and Contingencies
Redeemable noncontrolling interest	$ 988,812	$ 1,131,708
Shareholders’ Equity
Preference shares: $1.00 par value – 16,000,000 shares issued and outstanding at June 30, 2015 (December 31, 2014 – 16,000,000)	400,000	400,000
Common shares: $1.00 par value – 46,012,505 shares issued and outstanding at June 30, 2015 (December 31, 2014 – 38,441,972)	46,013	38,442
Additional paid-in capital	750,484	0
Accumulated other comprehensive income	2,993	3,416
Retained earnings	3,637,454	3,423,857
Total shareholders’ equity attributable to RenaissanceRe	4,836,944	3,865,715
Total liabilities, noncontrolling interests and shareholders’ equity	$ 12,053,186	$ 8,203,550

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Statement of Financial Position [Abstract]
Fixed maturity investments trading, amortized cost	$ 6,603,492	$ 4,749,613
Fixed maturity investments available for sale, amortized cost	$ 19,384	$ 23,772
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)	46,012,505	38,441,972
Common Shares, Shares outstanding (In shares)	46,012,505	38,441,972

Consolidated Statements Of Oper

Consolidated Statements Of Operations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Revenues
Gross premiums written	$ 661,997	$ 511,540	$ 1,305,575	$ 1,216,800
Net premiums written	508,677	346,407	912,712	796,754
Increase in unearned premiums	(128,849)	(85,991)	(236,124)	(249,804)
Net premiums earned	379,828	260,416	676,588	546,950
Net investment income	38,604	34,541	78,311	73,489
Net foreign exchange (losses) gains	(1,740)	2,392	(4,870)	1,331
Equity in earnings of other ventures	6,160	7,232	11,455	11,431
Other income (loss)	1,427	(535)	2,966	(473)
Net realized and unrealized (losses) gains on investments	(26,712)	27,128	15,037	42,055
Total revenues	397,567	331,174	779,487	674,783
Expenses
Net claims and claim expenses incurred	169,344	81,388	246,197	140,303
Acquisition expenses	61,666	33,477	105,067	67,177
Operational expenses	54,673	45,841	100,294	88,465
Corporate expenses	13,032	3,954	58,630	8,499
Interest expense	9,698	4,292	14,949	8,585
Total expenses	308,413	168,952	525,137	313,029
Income before taxes	89,154	162,222	254,350	361,754
Income tax (expense) benefit	1,842	204	49,746	38
Net income	90,996	162,426	304,096	361,792
Net income attributable to noncontrolling interests	(12,167)	(36,078)	(51,829)	(78,846)
Net income attributable to RenaissanceRe	78,829	126,348	252,267	282,946
Dividends on preference shares	(5,596)	(5,596)	(11,191)	(11,191)
Net income available to RenaissanceRe common shareholders	$ 73,233	$ 120,752	$ 241,076	$ 271,755
Net income available to RenaissanceRe common shareholders per common share – basic (in usd per share)	$ 1.60	$ 3	$ 5.61	$ 6.62
Net income available to RenaissanceRe common shareholders per common share – diluted (in usd per share)	1.59	2.95	5.56	6.52
Dividends per common share, in usd per share	$ 0.3	$ 0.29	$ 0.6	$ 0.58

Consolidated Statements Of Comp

Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Comprehensive income
Net income	$ 90,996	$ 162,426	$ 304,096	$ 361,792
Change in net unrealized gains on investments	(349)	(45)	(423)	(213)
Comprehensive income	90,647	162,381	303,673	361,579
Net income attributable to noncontrolling interests	(12,167)	(36,078)	(51,829)	(78,846)
Comprehensive income attributable to noncontrolling interests	(12,167)	(36,078)	(51,829)	(78,846)
Comprehensive income attributable to RenaissanceRe	78,480	126,303	251,844	282,733
Disclosure regarding net unrealized gains
Total net realized and unrealized holding (gains) losses on investments and net other-than-temporary impairments	(62)	(45)	(85)	(213)
Net realized gains on fixed maturity investments available for sale	(287)	0	(338)	0
Change in net unrealized gains on investments	$ (349)	$ (45)	$ (423)	$ (213)

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, 2013		$ 400,000	$ 43,646	$ 0	$ 4,131	$ 3,456,607
Issuance of shares			0	0
Repurchase of shares			(3,363)	2,139		(313,312)
Change in noncontrolling interests				43
Exercise of options and issuance of restricted stock awards			240	(2,182)
Change in net unrealized gains on investments	$ 213				(213)
Net income	361,792					361,792
Net income attributable to noncontrolling interests	(78,846)					(78,846)
Dividends on common shares						(23,550)
Dividends on preference shares	(11,191)					(11,191)
End of period at Jun. 30, 2014		400,000	40,523	0	3,918	3,391,500
Total shareholders’ equity	3,835,941
Beginning of period at Dec. 31, 2014	3,865,715	400,000	38,442	0	3,416	3,423,857
Issuance of shares			7,435	754,384
Repurchase of shares			(83)	(8,343)		0
Change in noncontrolling interests				(261)
Exercise of options and issuance of restricted stock awards			219	4,704
Change in net unrealized gains on investments	423				(423)
Net income	304,096					304,096
Net income attributable to noncontrolling interests	(51,829)					(51,829)
Dividends on common shares						(27,479)
Dividends on preference shares	(11,191)					(11,191)
End of period at Jun. 30, 2015	4,836,944	$ 400,000	$ 46,013	$ 750,484	$ 2,993	$ 3,637,454
Total shareholders’ equity	$ 4,836,944

Consolidated Statements Of Cash

Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Cash flows provided by operating activities
Net income	$ 304,096	$ 361,792
Adjustments to reconcile net income to net cash (used in) provided by operating activities
Amortization, accretion and depreciation	12,395	15,419
Equity in undistributed earnings of other ventures	(6,822)	(7,960)
Net realized and unrealized gains on investments	(15,037)	(42,055)
Net unrealized gains included in net investment income	(3,238)	(8,879)
Net unrealized losses (gains) included in other income (loss)	348	(2,220)
Change in:
Premiums receivable	(396,091)	(363,029)
Prepaid reinsurance premiums	(173,970)	(201,831)
Reinsurance recoverable	(66,042)	15,910
Deferred acquisition costs	(63,269)	(59,081)
Reserve for claims and claim expenses	37,293	(11,112)
Unearned premiums	410,534	451,635
Reinsurance balances payable	52,969	265,163
Other	(122,536)	(240,366)
Net cash (used in) provided by operating activities	(29,370)	173,386
Cash flows (used in) provided by investing activities
Proceeds from sales and maturities of fixed maturity investments trading	4,761,975	4,020,174
Purchases of fixed maturity investments trading	(4,596,118)	(3,970,317)
Proceeds from sales and maturities of fixed maturity investments available for sale	5,000	5,114
Net purchases of equity investments trading	(166,485)	(11,146)
Net sales of short term investments	360,162	89,549
Net (purchases) sales of other investments	(1,250)	68,684
Net (purchases) sales of investments in other ventures	(45)	1,030
Net sales of other assets	4,500	6,000
Net purchase of Platinum	(678,152)	0
Net cash (used in) provided by investing activities	(310,413)	209,088
Cash flows provided by (used in) financing activities
Dividends paid – RenaissanceRe common shares	(27,479)	(23,550)
Dividends paid – preference shares	(11,191)	(11,191)
RenaissanceRe common share repurchases	(736)	(314,536)
Issuance of debt, net of expenses	445,589	0
Net third party redeemable noncontrolling interest share transactions	(187,064)	(144,096)
Net cash provided by (used in) financing activities	219,119	(493,373)
Effect of exchange rate changes on foreign currency cash	(6,830)	(2,676)
Net decrease in cash and cash equivalents	(127,494)	(113,575)
Cash and cash equivalents, beginning of period	525,584	408,032
Cash and cash equivalents, end of period	$ 398,090	$ 294,457

Organization

Organization	6 Months Ended
	Jun. 30, 2015
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, 2014 . 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. As a result of the acquisition, Platinum and its subsidiaries became wholly owned subsidiaries of RenaissanceRe, including 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 Accounting Standards Codification 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. • 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 launched in June 2013 which operates subject to U.S. federal income tax, and Syndicate 1458. • 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 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. 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, acts as exclusive underwriting manager for these joint ventures in return for fee-based income and profit participation. • Effective January 1, 2013, the Company formed and launched a managed joint venture, Upsilon Reinsurance Fund Opportunities 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 limited 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 is not considered the primary beneficiary of Upsilon Fund and as a result Upsilon Fund is not consolidated by the Company. • 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. Redeemable noncontrolling interest - Medici represents the interests of external parties with respect to the net income and shareholders’ equity of Medici.

Significant Accounting Policies

Significant Accounting Policies	6 Months Ended
	Jun. 30, 2015
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, 2014 , 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 ISSUED ACCOUNTING PRONOUNCEMENTS NOT YET ADOPTED Revenue from Contracts with Customers In May 2014, the Financial Accounting Standards Board (the “FASB”) issued Accounting Standards Update (“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 was to be effective for public business entities in annual and interim periods beginning after December 15, 2016, however in July 2015, the FASB decided to defer by one year the effective dates of ASU 2014-09, and as a result, ASU 2014-09 will be effective for public business entities in annual and interim period 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. 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 is effective for all entities in annual and interim periods beginning after December 15, 2015. Entities may apply the amendments in ASU 2014-12 either (a) prospectively to all awards granted or modified after the effective date or (b) retrospectively to all awards with performance targets that are outstanding as of the beginning of the earliest annual period presented in the financial statements and to all new or modified awards thereafter. 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. 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 is effective for public business entities for fiscal years, and for interim periods within those fiscal years, beginning after December 15, 2015. 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. 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 is effective for public business entities in annual and interim periods beginning after December 15, 2015. Early adoption is permitted. ASU 2015-03 provides for retroactive application, and upon transition, applicable disclosures for a change in an accounting principle would be provided, including the transition method, a description of the prior period information that has been retroactively adjusted, and the effect of the change on the applicable financial statement line items. 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 in 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. 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 is 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 is permitted. As this guidance is disclosure-related only, the adoption of this guidance is not expected to have a material impact on the Company’s statements of operations and financial position.

Acquisition of Platinum

Acquisition of Platinum	6 Months Ended
	Jun. 30, 2015
Business Combinations [Abstract]
Acquisition of Platinum	ACQUISITION OF PLATINUM Overview On March 2, 2015, RenaissanceRe acquired 100% of the outstanding common shares of Platinum for $76 per Platinum common share, or aggregate consideration of $1.93 billion . In connection with an intercompany restructuring, effective July 1, 2015, Platinum was merged with RenaissanceRe, with RenaissanceRe continuing as the surviving company. Prior to the closing of the acquisition of Platinum, Platinum was a publicly traded company listed on the New York Stock Exchange and headquartered in Bermuda. Platinum, through its wholly owned subsidiaries, provided property and casualty reinsurance coverage through reinsurance brokers to insurers and select reinsurers on a worldwide basis. The acquisition of Platinum is expected to benefit the combined companies’ clients through an expanded product offering and enhanced broker relationships and it is also expected to accelerate the growth of the Company’s U.S. specialty and casualty reinsurance platform. The aggregate consideration for the transaction consisted of the issuance of 7.435 million RenaissanceRe common shares valued at $761.8 million (based on the share price as of March 2, 2015) and $1.16 billion of cash. The cash consideration was partially funded through a pre-closing dividend from Platinum of $10.00 per share, or $253.2 million (the “Special Dividend”), RenaissanceRe available funds of $604.4 million and a short term bridge loan of $300.0 million . On March 24, 2015, RenaissanceRe Finance Inc. (“RenaissanceRe Finance”), a wholly owned subsidiary of RenaissanceRe, issued $300.0 million of its 3.700% Senior Notes due 2025 (together with cash on hand) to replace the short term bridge loan used to fund part of the cash consideration. Refer to “Note 7 . Debt and Credit Facilities” for additional information related to the 3.700% Senior Notes due 2025 . In connection with the acquisition of Platinum, RenaissanceRe incurred transaction-related expenses of $48.2 million in the six months ended June 30, 2015 , which includes $12.5 million related to transaction costs, including due diligence, legal, accounting and investment banking fees and expenses, $3.7 million of costs related to the integration of Platinum within the RenaissanceRe organization, and $32.0 million of compensation-related costs associated with terminating employees of Platinum. In the fourth quarter of 2014, RenaissanceRe also incurred $6.7 million of transaction-related expenses. These expenses have all been reported as a component of corporate expenses. Purchase Price The Company's total purchase price for Platinum at March 2, 2015 was calculated as follows: Special Dividend Number of Platinum common shares and Platinum equity awards canceled in the acquisition of Platinum 25,320,312 Special Dividend per outstanding common share of Platinum and Platinum equity award $ 10.00 Special Dividend paid to common shareholders of Platinum and holders of Platinum equity awards $ 253,203 RenaissanceRe common shares Common shares issued by RenaissanceRe 7,434,561 Common share price of RenaissanceRe as of March 2, 2015 $ 102.47 Market value of RenaissanceRe common shares issued by RenaissanceRe to common shareholders of Platinum and holders of Platinum equity awards 761,819 Platinum common shares Fair value of Platinum common shares owned by RenaissanceRe and canceled in connection with the acquisition of Platinum 12,950 Cash consideration Number of Platinum common shares and Platinum equity awards canceled in the acquisition of Platinum 25,320,312 Platinum common shares owned by RenaissanceRe and canceled in connection with the acquisition of Platinum (169,220 ) Number of Platinum common shares and Platinum equity awards canceled in the acquisition of Platinum excluding those owned by RenaissanceRe and canceled in connection with the acquisition of Platinum 25,151,092 Agreed cash price paid to common shareholders of Platinum and holders of Platinum equity awards $ 35.96 Cash consideration paid by RenaissanceRe to common shareholders of Platinum and holders of Platinum equity awards 904,433 Total purchase price 1,932,405 Less: Special Dividend paid by Platinum (253,203 ) Net purchase price $ 1,679,202 Fair Value of Net Assets Acquired and Liabilities Assumed The purchase price was allocated to the acquired assets and liabilities of Platinum based on estimated fair values on March 2, 2015 , the date the transaction closed, as detailed below. The Company recognized goodwill of $191.7 million primarily attributable to Platinum’s assembled workforce and synergies expected to result upon integration of Platinum into the Company’s operations. There were no other adjustments to carried goodwill during the period ended June 30, 2015 reflected on the Company’s consolidated balance sheet at June 30, 2015 . The Company recognized identifiable finite lived intangible assets of $75.2 million , which will be amortized over a weighted average period of 8 years , identifiable indefinite lived intangible assets of $8.4 million , and certain other adjustments to the fair values of the assets acquired, liabilities assumed and shareholders’ equity of Platinum at March 2, 2015 as summarized in the table below: Shareholders’ equity of Platinum prior to Special Dividend $ 1,737,278 Cash and cash equivalents (Special Dividend on Platinum common shares and Platinum equity awards) (253,203 ) Adjusted shareholders’ equity of Platinum at March 2, 2015 1,484,075 Adjustments for fair value, by applicable balance sheet caption: Deferred acquisition costs (44,486 ) Debt (28,899 ) Reserve for claims and claim expenses (21,725 ) Other assets - deferred debt issuance costs (1,046 ) Total adjustments for fair value by applicable balance sheet caption before tax impact (96,156 ) Other assets - net deferred tax asset related to fair value adjustments 29,069 Total adjustments for fair value by applicable balance sheet caption (67,087 ) Adjustments for fair value of the identifiable intangible assets: Identifiable indefinite lived intangible assets (insurance licenses) 8,400 Identifiable finite lived intangible assets (non-contractual relationships, renewal rights, value of business acquired, trade name, internally developed and used computer software and covenants not to compete) 75,200 Identifiable intangible assets before tax impact 83,600 Other liabilities - deferred tax liability on identifiable intangible assets (13,115 ) Total adjustments for fair value of the identifiable intangible assets 70,485 Total adjustments for fair value by applicable balance sheet caption and identifiable intangible assets 3,398 Shareholders’ equity of Platinum at fair value 1,487,473 Total net purchase price paid by RenaissanceRe 1,679,202 Excess purchase price over the fair value of net assets acquired assigned to goodwill $ 191,729 An explanation of the significant fair value adjustments is as follows: • Deferred acquisition costs - to eliminate Platinum’s deferred acquisition costs; • Debt - to reflect Platinum’s existing senior notes at fair value using indicative market pricing obtained from third-party service providers; • Reserve for claims and claim expenses - to reflect an increase in net claims and claim expenses due to the addition of a market based risk margin which represents the cost of capital required by a market participant to assume the net claims and claim expenses of Platinum, partially offset by a deduction which represents the discount due to the present value calculation of the unpaid claims and claim expenses based on the expected payout of the net unpaid claims and claim expenses; • Other assets - to eliminate deferred debt issuance costs related to Platinum’s existing senior notes and to reflect net deferred tax assets related to fair value adjustments; • Identifiable indefinite lived and finite lived intangible assets - to establish the fair value of identifiable intangible assets related to the acquisition of Platinum described in detail below; and • Other liabilities - to reflect the deferred tax liability on identifiable intangible assets. Identifiable intangible assets at March 2, 2015 and at June 30, 2015 , consisted of the following, and are included in goodwill and other intangible assets on the Company’s consolidated balance sheet: Amount Economic Useful Life Key non-contractual relationships $ 30,400 10 years Value of business acquired 20,200 2 years Renewal rights 15,800 15 years Insurance licenses 8,400 Indefinite Internally developed and used computer software 3,500 2 years Other non-contractual relationships 2,300 3 years Non-compete agreements 1,900 2.5 years Trade name 1,100 6 months Identifiable intangible assets, before amortization, at March 2, 2015 83,600 Amortization (from March 2, 2015 through June 30, 2015) (7,385 ) Net identifiable intangible assets at June 30, 2015 related to the acquisition of Platinum $ 76,215 An explanation of the identifiable intangible assets is as follows: • Key non-contractual relationships - these relationships included Platinum’s top four brokers (Aon plc, Marsh & McLennan Companies, Inc., Willis Group Holdings plc. and Jardine Lloyd Thompson Group plc.) and consideration was given to the expectation of the renewal of these relationships and the associated expenses; • Value of business acquired (“VOBA”) - the expected future losses and expenses associated with the policies that were in-force as of the closing date of the transaction were estimated and compared to the future premium remaining expected to be earned. The difference between the risk-adjusted future loss and expenses, discounted to present value and the unearned premium reserve, was estimated to be the VOBA; • Renewal rights - the value of policy renewal rights taking into consideration written premium on assumed retention ratios and the insurance cash flows and the associated equity cash flows from these renewal policies over the expected life of the renewals; • Insurance licenses - the value of insurance licenses acquired providing the ability to write reinsurance in all 50 states of the U.S. and the District of Columbia; • Internally developed and used computer software - represents the value of internally developed and used computer software to be utilized by the Company; • Other non-contractual relationships - these relationships consisted of Platinum’s brokers with the exception of those previously listed above as key non-contractual relationships and consideration was given to the expectation of the renewal of these relationships and the associated expenses; • Non-compete agreements - represent non-compete agreements with key employees of Platinum; and • Trade name - represents the value of the Platinum brand acquired. As part of the allocation of the purchase price, included in the adjustment to other assets in the table above is a deferred tax asset of $29.1 million related to certain other adjustments to the fair values of the assets acquired, liabilities assumed and shareholders’ equity, summarized in the table above, which was partially offset by a deferred tax liability of $13.1 million related to the estimated fair value of the intangible assets recorded. Other net deferred tax assets recorded primarily relate to differences between financial reporting and tax bases of the acquired assets and liabilities as of the acquisition date, March 2, 2015 . The Company estimates that none of the goodwill that was recorded will be deductible for income tax purposes. Financial Results The following table summarizes the results of Platinum since March 2, 2015 that have been included in the Company's consolidated statements of operations and comprehensive income. Three months ended June 30, 2015 Six months ended June 30, 2015 Total revenues $ 106,691 $ 146,830 Net loss attributable to RenaissanceRe common shareholders (1) $ 5,004 $ (14,435 ) (1) Includes $5.8 million and $34.2 million of transaction, integration and compensation-related costs associated with the acquisition of Platinum for the three and six months ended June 30, 2015 , respectively. Taxation During the six months ended June 30, 2015 , the income tax benefit recorded by the Company was primarily the result of a reduction in the Company’s U.S. deferred tax asset valuation allowance of $47.4 million . A valuation allowance was previously provided against the Company’s U.S. deferred tax assets as in the opinion of management, it was then more likely than not that a portion of the deferred tax asset would not be realized. However, with the acquisition of Platinum and the expected profits in its U.S.-based operations, the Company believes that it is more likely than not that the U.S. deferred tax asset will be realized and has reduced its valuation allowance against such asset. A valuation allowance continues to be provided against deferred tax assets in Ireland, the U.K., and Singapore. These deferred tax assets relate primarily to net operating loss carryforwards and deferred underwriting results. Supplemental Pro Forma Information Platinum’s results have been included in the Company's consolidated financial statements from March 2, 2015 to June 30, 2015 . The following table presents unaudited pro forma consolidated financial information for the three and six months ended June 30, 2015 and 2014 and assumes the acquisition of Platinum occurred on January 1, 2014. The unaudited pro forma consolidated financial information is provided for informational purposes only and is not necessarily, and should not be assumed to be, an indication of the results that would have been achieved had the transaction been completed as of January 1, 2014 or that may be achieved in the future. The unaudited pro forma consolidated financial information does not give consideration to the impact of possible revenue enhancements, expense efficiencies, synergies or asset dispositions that may result from the acquisition of Platinum. In addition, unaudited pro forma consolidated financial information does not include the effects of costs associated with any restructuring or integration activities resulting from the acquisition of Platinum, as they are nonrecurring. Three months ended Six months ended June 30, 2015 June 30, 2014 June 30, June 30, 2014 Total revenues $ 397,567 $ 488,999 $ 858,120 $ 1,003,016 Net income available to RenaissanceRe common shareholders 73,233 174,678 256,039 373,772 Among other adjustments, and in addition to the fair value adjustments and recognition of goodwill and identifiable intangible assets noted above, other material nonrecurring pro forma adjustments directly attributable to the acquisition of Platinum principally included certain adjustments to recognize transaction related costs, align accounting policies, amortize fair value adjustments, amortize identifiable indefinite lived intangible assets and recognize related tax impacts.

Investments

Investments	6 Months Ended
	Jun. 30, 2015
Investments [Abstract]
Investments	INVESTMENTS Fixed Maturity Investments Trading The following table summarizes the fair value of fixed maturity investments trading: June 30, December 31, U.S. treasuries $ 2,020,746 $ 1,671,471 Agencies 144,947 96,208 Municipal 806,724 — Non-U.S. government (Sovereign debt) 370,613 280,651 Non-U.S. government-backed corporate 172,381 146,467 Corporate 1,865,369 1,610,442 Agency mortgage-backed 474,966 312,333 Non-agency mortgage-backed 253,044 241,590 Commercial mortgage-backed 419,218 373,117 Asset-backed 63,426 24,406 Total fixed maturity investments trading $ 6,591,434 $ 4,756,685 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 June 30, 2015 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Non-Credit Other-Than- Temporary Impairments (1) Agency mortgage-backed $ 903 $ 10 $ (9 ) $ 904 $ — Non-agency mortgage-backed 8,498 1,790 (3 ) 10,285 613 Commercial mortgage-backed 7,182 495 — 7,677 — Asset-backed 2,801 87 — 2,888 — Total fixed maturity investments available for sale $ 19,384 $ 2,382 $ (12 ) $ 21,754 $ 613 Included in Accumulated Other Comprehensive Income December 31, 2014 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Non-Credit Other-Than- Temporary Impairments (1) Agency mortgage-backed $ 3,928 $ 359 $ — $ 4,287 $ — Non-agency mortgage-backed 9,478 1,985 (3 ) 11,460 656 Commercial mortgage-backed 7,291 643 — 7,934 — Asset-backed 3,075 129 — 3,204 — Total fixed maturity investments available for sale $ 23,772 $ 3,116 $ (3 ) $ 26,885 $ 656 (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 June 30, 2015 Amortized Cost Fair Value Amortized Cost Fair Value Amortized Cost Fair Value Due in less than one year $ 220,880 $ 219,382 $ — $ — $ 220,880 $ 219,382 Due after one through five years 3,862,284 3,859,616 — — 3,862,284 3,859,616 Due after five through ten years 983,765 970,723 — — 983,765 970,723 Due after ten years 337,497 331,059 — — 337,497 331,059 Mortgage-backed 1,135,710 1,147,228 16,583 18,866 1,152,293 1,166,094 Asset-backed 63,356 63,426 2,801 2,888 66,157 66,314 Total $ 6,603,492 $ 6,591,434 $ 19,384 $ 21,754 $ 6,622,876 $ 6,613,188 Equity Investments Trading The following table summarizes the fair value of equity investments trading: June 30, December 31, Financials $ 228,777 $ 222,190 Communications and technology 84,522 31,376 Industrial, utilities and energy 71,168 28,859 Consumer 50,764 19,522 Healthcare 48,572 16,582 Basic materials 9,253 3,569 Total $ 493,056 $ 322,098 Pledged Investments At June 30, 2015 , $2,463.2 million 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 standby letter of credit facility and bilateral letter of credit facility ( December 31, 2014 - $2,379.4 million ). Of this amount, $665.8 million is on deposit with, or in trust accounts for the benefit of, U.S. state regulatory authorities ( December 31, 2014 - $691.9 million ). Reverse Repurchase Agreements At June 30, 2015 , the Company held $78.2 million ( December 31, 2014 - $49.3 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 and Net Realized and Unrealized Gains on Investments The components of net investment income are as follows: Three months ended Six months ended June 30, June 30, June 30, June 30, Fixed maturity investments $ 33,791 $ 26,372 $ 59,730 $ 50,232 Short term investments 297 286 494 476 Equity investments 1,913 779 4,517 1,575 Other investments Hedge funds and private equity investments 5,425 8,340 15,838 20,657 Other 674 1,483 4,182 6,011 Cash and cash equivalents 127 93 275 184 42,227 37,353 85,036 79,135 Investment expenses (3,623 ) (2,812 ) (6,725 ) (5,646 ) Net investment income $ 38,604 $ 34,541 $ 78,311 $ 73,489 Net realized and unrealized gains on investments are as follows: Three months ended Six months ended June 30, June 30, June 30, June 30, Gross realized gains $ 8,672 $ 12,166 $ 30,204 $ 25,633 Gross realized losses (21,552 ) (2,587 ) (26,423 ) (8,151 ) Net realized (losses) gains on fixed maturity investments (12,880 ) 9,579 3,781 17,482 Net unrealized (losses) gains on fixed maturity investments trading (48,104 ) 29,918 (22,132 ) 57,800 Net realized and unrealized gains (losses) on investments-related derivatives 19,816 (6,884 ) 15,608 (17,783 ) Net realized gains on equity investments trading 8,832 5,134 16,313 5,055 Net unrealized gains (losses) on equity investments trading 5,624 (10,619 ) 1,467 (20,499 ) Net realized and unrealized (losses) gains on investments $ (26,712 ) $ 27,128 $ 15,037 $ 42,055 The following tables provide an analysis of the components of other comprehensive income and reclassifications out of accumulated other comprehensive income. Three months ended June 30, 2015 Investments in other ventures Fixed maturity investments available for sale Total Beginning balance $ 412 $ 2,930 $ 3,342 Other comprehensive income (loss) before reclassifications 211 (273 ) (62 ) Amounts reclassified from accumulated other comprehensive income by statement of operations line item: Realized gains reclassified from accumulated other comprehensive income to net realized and unrealized gains on investments — (287 ) (287 ) Net current-period other comprehensive income (loss) 211 (560 ) (349 ) Ending balance $ 623 $ 2,370 $ 2,993 Six months ended June 30, 2015 Investments in other ventures Fixed maturity investments available for sale Total Beginning balance $ 303 $ 3,113 $ 3,416 Other comprehensive income (loss) before reclassifications 320 (405 ) (85 ) Amounts reclassified from accumulated other comprehensive income by statement of operations line item: Realized gains reclassified from accumulated other comprehensive income to net realized and unrealized gains on investments — (338 ) (338 ) Net current-period other comprehensive income (loss) 320 (743 ) (423 ) Ending balance $ 623 $ 2,370 $ 2,993 Three months ended June 30, 2014 Investments in other ventures Fixed maturity investments available for sale Total Beginning balance $ 160 $ 3,803 $ 3,963 Other comprehensive income (loss) before reclassifications 51 (96 ) (45 ) Ending balance $ 211 $ 3,707 $ 3,918 Six months ended June 30, 2014 Investments in other ventures Fixed maturity investments available for sale Total Beginning balance $ 163 $ 3,968 $ 4,131 Other comprehensive gain (loss) before reclassifications 48 (261 ) (213 ) Ending balance $ 211 $ 3,707 $ 3,918 The following tables provide an analysis of the length of time the Company’s fixed maturity investments available for sale in an unrealized loss have been in a continual unrealized loss position. Less than 12 Months 12 Months or Greater Total At June 30, 2015 Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses Agency mortgage-backed $ 569 $ (9 ) $ — $ — $ 569 $ (9 ) Non-agency mortgage-backed — — 65 (3 ) 65 (3 ) Total $ 569 $ (9 ) $ 65 $ (3 ) $ 634 $ (12 ) Less than 12 Months 12 Months or Greater Total December 31, 2014 Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses Non-agency mortgage-backed $ — $ — $ 69 $ (3 ) $ 69 $ (3 ) Total $ — $ — $ 69 $ (3 ) $ 69 $ (3 ) At June 30, 2015 , the Company held three fixed maturity investments available for sale securities that were in an unrealized loss position ( December 31, 2014 - two ), including two fixed maturity investments available for sale securities that were in an unrealized loss position for twelve months or greater ( December 31, 2014 - two ). The Company does not intend to sell these securities and it is not more likely than not that the Company will be required to sell these securities before the anticipated recovery of the remaining amortized cost basis. The Company performed reviews of its fixed maturity investments available for sale for the six months ended June 30, 2015 and 2014 , respectively, in order to determine whether declines in the fair value below the amortized cost basis were considered other-than-temporary in accordance with the applicable guidance, as discussed below. Other-Than-Temporary Impairment Process The Company’s process for assessing whether declines in the fair value of its fixed maturity investments available for sale represent impairments that are other-than-temporary includes reviewing each fixed maturity investment available for sale that is impaired and determining: (i) if the Company has the intent to sell the debt security or (ii) if it is more likely than not that the Company will be required to sell the debt security before its anticipated recovery; and (iii) whether a credit loss exists, that is, where the Company expects that the present value of the cash flows expected to be collected from the security is less than the amortized cost basis of the security. For the six months ended June 30, 2015 , the Company recognized $ Nil of other-than-temporary impairments which were recognized in earnings and $ Nil related to other factors which were recognized in other comprehensive income ( 2014 – $Nil and $Nil , respectively). The following table provides a rollforward of the amount of other-than-temporary impairments related to credit losses recognized in earnings for which a portion of an other-than-temporary impairment was recognized in accumulated other comprehensive income: Three months ended Six months ended June 30, June 30, June 30, June 30, Beginning balance $ 485 $ 545 $ 498 $ 561 Reductions: Securities sold during the period (19 ) (16 ) (32 ) (32 ) Ending balance $ 466 $ 529 $ 466 $ 529

Fair Value Measurements

Fair Value Measurements	6 Months Ended
	Jun. 30, 2015
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 June 30, 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 $ 2,020,746 $ 2,020,746 $ — $ — Agencies 144,947 — 144,947 — Municipal 806,724 — 806,724 — Non-U.S. government (Sovereign debt) 370,613 — 370,613 — Non-U.S. government-backed corporate 172,381 — 172,381 — Corporate 1,865,369 — 1,857,709 7,660 Agency mortgage-backed 475,870 — 475,870 — Non-agency mortgage-backed 263,329 — 263,329 — Commercial mortgage-backed 426,895 — 426,895 — Asset-backed 66,314 — 66,314 — Total fixed maturity investments 6,613,188 2,020,746 4,584,782 7,660 Short term investments 1,543,191 — 1,543,191 — Equity investments trading 493,056 493,056 — — Other investments Private equity partnerships 250,796 — — 250,796 Catastrophe bonds 228,998 — 228,998 — Senior secured bank loan fund 22,561 — — 22,561 Hedge funds 2,338 — — 2,338 Total other investments 504,693 — 228,998 275,695 Other assets and (liabilities) Assumed and ceded (re)insurance contracts 75,701 — — 75,701 Derivatives (1) (4,082 ) (23 ) (4,045 ) (14 ) Other (4,583 ) — (4,583 ) — Total other assets and (liabilities) 67,036 (23 ) (8,628 ) 75,687 $ 9,221,164 $ 2,513,779 $ 6,348,343 $ 359,042 (1) See “Note 13 . Derivative Instruments” for additional information related to the fair value by type of contract, of derivatives entered into by the Company. At December 31, 2014 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 $ 1,671,471 $ 1,671,471 $ — $ — Agencies 96,208 — 96,208 — Non-U.S. government (Sovereign debt) 280,651 — 280,651 — Non-U.S. government-backed corporate 146,467 — 146,467 — Corporate 1,610,442 — 1,594,782 15,660 Agency mortgage-backed 316,620 — 316,620 — Non-agency mortgage-backed 253,050 — 253,050 — Commercial mortgage-backed 381,051 — 381,051 — Asset-backed 27,610 — 27,610 — Total fixed maturity investments 4,783,570 1,671,471 3,096,439 15,660 Short term investments 1,013,222 — 1,013,222 — Equity investments trading 322,098 322,098 — — Other investments Private equity partnerships 281,932 — — 281,932 Catastrophe bonds 200,329 — 200,329 — Senior secured bank loan funds 19,316 — — 19,316 Hedge funds 2,570 — — 2,570 Total other investments 504,147 — 200,329 303,818 Other assets and (liabilities) Assumed and ceded (re)insurance contracts (8,744 ) — — (8,744 ) Derivatives (1) 6,345 (569 ) 7,104 (190 ) Other (11,509 ) — (11,509 ) — Total other assets and (liabilities) (13,908 ) (569 ) (4,405 ) (8,934 ) $ 6,609,129 $ 1,993,000 $ 4,305,585 $ 310,544 (1) See “Note 13 . 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 June 30, 2015 , the Company’s U.S. treasuries fixed maturity investments were primarily priced by pricing services and had a weighted average effective yield of 1.0% and a weighted average credit quality of AA ( December 31, 2014 - 1.0% 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 June 30, 2015 , the Company’s agency fixed maturity investments had a weighted average effective yield of 1.7% and a weighted average credit quality of AA ( December 31, 2014 - 1.2% 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 - In connection with the acquisition of Platinum, the Company acquired a portfolio of municipal fixed maturity investments. At June 30, 2015 , the Company’s municipal fixed maturity investments had a weighted average effective yield of 2.4% and a weighted average credit quality of AA. 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 - Non-U.S. government fixed maturity investments held by the Company at June 30, 2015 had a weighted average effective yield of 1.2% and a weighted average credit quality of AA ( December 31, 2014 - 1.1% 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 - 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 AA at June 30, 2015 ( December 31, 2014 - 1.1% and AAA, 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 June 30, 2015 , the Company’s corporate fixed maturity investments principally consist of U.S. and international corporations and had a weighted average effective yield of 3.2% and a weighted average credit quality of BBB ( December 31, 2014 - 3.2% 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 June 30, 2015 , the Company’s agency mortgage-backed fixed maturity investments included agency residential mortgage-backed securities with a weighted average effective yield of 2.2% , a weighted average credit quality of AA and a weighted average life of 6.0 years ( December 31, 2014 - 2.3% , AA and 5.6 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 June 30, 2015 , the Company’s non-agency prime residential mortgage-backed fixed maturity investments had a weighted average effective yield of 3.4% , a weighted average credit quality of non-investment grade, and a weighted average life of 4.1 years ( December 31, 2014 - 3.4% , non-investment grade and 4.1 years, respectively). The Company’s non-agency Alt-A fixed maturity investments held at June 30, 2015 had a weighted average effective yield of 4.1% , a weighted average credit quality of BBB and a weighted average life of 5.1 years ( December 31, 2014 - 4.3% , BBB and 5.0 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 - The Company’s commercial mortgage-backed fixed maturity investments held at June 30, 2015 had a weighted average effective yield of 2.4% , a weighted average credit quality of AA, and a weighted average life of 3.0 years ( December 31, 2014 - 2.1% , AAA and 3.5 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 June 30, 2015 , the Company’s asset-backed fixed maturity investments had a weighted average effective yield of 1.4% , a weighted average credit quality of AAA and a weighted average life of 2.4 years ( December 31, 2014 - 1.5% , 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 June 30, 2015 of $4.6 million were principally 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 June 30, 2015 Fair Value (Level 3) Valuation Technique Unobservable (U) and Observable (O) Inputs Low High Weighted Average or Actual Fixed maturity investments Corporate $ 7,660 Discounted cash flow (“DCF”) Credit spread (U) n/a n/a 3.6 % Liquidity discount (U) n/a n/a 1.0 % Risk-free rate (O) n/a n/a 0.3 % Dividend rate (O) n/a n/a 6.5 % Total fixed maturity investments 7,660 Other investments Private equity partnerships 250,796 Net asset valuation Estimated performance (U) (30.2 )% 14.0 % 3.1 % Senior secured bank loan fund 22,561 Net asset valuation Estimated performance (U) n/a n/a 1.2 % Hedge funds 2,338 Net asset valuation Estimated performance (U) 0.0 % 0.0 % 0.0 % Total other investments 275,695 Other assets and (liabilities) Assumed and ceded (re)insurance contracts 82,905 Internal valuation model Estimated performance (U) n/a n/a 3.0 % Assumed and ceded (re)insurance contracts (1,308 ) Internal valuation model Bond price (U) $ 96.23 $ 99.78 $ 97.48 Liquidity premium (U) n/a n/a 1.3 % Assumed and ceded (re)insurance contracts (5,896 ) Internal valuation model Net undiscounted cash flows (U) n/a n/a $ (9,233 ) Expected loss ratio (U) n/a n/a 28.0 % Net acquisition expense ratio (O) n/a n/a 14.0 % Contract period (O) 194 1,100 824 Discount rate (U) n/a n/a 1.0 % Total assumed and ceded (re)insurance contracts 75,701 Weather contract (14 ) Internal valuation model See below n/a n/a See below Total other assets and (liabilities) 75,687 $ 359,042 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 with a fair value of $7.7 million at June 30, 2015 . The Company measures the fair value of this investment using a DCF model and seeks to incorporate all relevant information reasonably available. The Company considers the contractual agreement which stipulates the methodology for calculating a dividend rate to be paid upon liquidation, conversion or redemption. At June 30, 2015 , the dividend rate was 6.5% . In addition, the Company has estimated a liquidity discount of 1.0% , a risk-free rate of 0.3% and a credit spread of 3.6% . To ensure the estimate for fair value determined using the DCF model is reasonable, the Company reviews private market comparables of similar investments, if available, and in particular, credit ratings of other private market comparables for similar investments to determine the appropriateness of its estimate of fair value using a DCF model. The fair value of the Company’s investment in this corporate fixed maturity investment determined by a DCF model is positively correlated to the dividend rate, and inversely correlated to the credit spread, liquidity discount and the risk-free rate. Other investments Private equity partnerships Level 3 - Included in the Company’s $250.8 million of investments in private equity partnerships at June 30, 2015 were 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 fair value of private equity partnership investments is based on current estimated net asset values established in accordance with the governing documents of such investments and is obtained from the investment manager or general partner of the respective entity. The type of underlying investments held by the investee which form the basis of the net asset valuation include assets such as private business ventures, for which the Company does not have access to financial information. As a result, the Company is unable to corroborate the fair value measurement of the underlying investments of the private equity partnership and therefore requires significant management judgment to determine the fair value of the private equity partnership. In circumstances where there is a reporting lag between the current period end reporting date and the reporting date of the latest fund valuation, the Company estimates the fair value of these funds by starting with the prior quarter-end fund valuations, adjusting these valuations for actual capital calls, redemptions or distributions, as well as the impact of changes in foreign currency exchange rates, and then estimating the return for the current period. In circumstances in which the Company estimates the return for the current period, all relevant information reasonably available to the Company is utilized. This principally includes preliminary estimates reported to the Company by its fund managers, obtaining the valuation of underlying portfolio investments where such underlying investments are publicly traded and therefore have a readily observable price, using information that is available to the Company with respect to the underlying investments, reviewing various indices for similar investments or asset classes, as well as estimating returns based on the results of similar types of investments for which the Company has obtained reported results, or other valuation methods, where possible. The range of such current estimated periodic returns for the three months ended June 30, 2015 was negative 30.2% to positive 14.0% with a weighted average of positive 3.1% . The fair value of the Company’s investment in private equity partnerships is positively correlated to the estimated periodic rate of return. The Company also considers factors such as recent financial information, the value of capital transactions with the partnership and management’s judgment regarding whether any adjustments should be made to the net asset value. For each respective private equity partnership, the Company obtains and reviews the valuation methodology used by the investment manager or general partner and the latest audited annual financial statements to attempt to ensure that the investment partnership is following fair value principles consistent with GAAP in determining the net asset value of each limited partner’s interest. Senior secured bank loan fund Level 3 - At June 30, 2015 the Company had $22.6 million invested in a closed end fund which invests primarily in loans. The Company has no right to redeem its investment in this fund. The Company’s investment in this fund is valued using the estimated monthly net asset valuation received from the investment manager. The lock up provisions in this fund result in a lack of current observable market transactions between the fund participants and the fund, and therefore the Company considers the fair value of its investment in this fund to be determined using Level 3 inputs. The Company obtains and reviews the latest audited annual financial statements to attempt to ensure that the fund is following fair value principles consistent with GAAP in determining the net asset value. The fair value of the Company’s investment in the senior secured bank loan fund is positively correlated to the estimated monthly net asset valuations received from the investment manager. Hedge funds Level 3 - At June 30, 2015 the Company had $2.3 million of hedge fund investments that are invested in so called “side pockets” or illiquid investments. In these instances, the Company generally does not have the right to redeem its interest, and as such, the Company classifies this portion of its investment as Level 3. The fair value of these illiquid investments is determined by adjusting the previous periods’ reported net asset value (generally one month in arrears) for an estimated periodic rate of return obtained from the respective investment manager. For each hedge fund investment, the Company obtains and reviews the valuation methodology used by the investment manager and the latest audited annual financial statements to attempt to ensure that the hedge fund investment is following fair value principles consistent with GAAP in determining the net asset value. Other assets and liabilities Assumed and ceded (re)insurance contracts Level 3 - At June 30, 2015 the Company had an $82.9 million asset related to a reinsurance deposit asset accounted for at fair value with the fair value obtained through the use of an internal 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 estimated periodic return of the reinsurance deposit asset, which is currently estimated to be 3.0% . The fair value of this reinsurance deposit asset is positively correlated to the estimated periodic rate of return. Level 3 - At June 30, 2015 the Company had a $1.3 million 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 June 30, 2015 the Company had a $5.9 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. Weather Contract Level 3 - At June 30, 2015 the Company had a $14 thousand liability related to a weather contract entered into with an insurance company, with the fair value determined through the use of an internal valuation model. Inputs to the internal valuation model are based on proprietary data as observable market inputs are not available. The most significant unobservable input is the potential payment that would become due to a counterparty following the occurrence of a triggering event as reported by an external agency. Generally, an increase (decrease) in the potential payment would result in an increase (decrease) to the f

Reinsurance

Reinsurance	6 Months Ended
	Jun. 30, 2015
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 Six months ended June 30, 2015 June 30, 2014 June 30, 2015 June 30, 2014 Premiums written Direct $ 34,340 $ 19,707 $ 65,153 $ 33,562 Assumed 627,657 491,833 1,240,422 1,183,238 Ceded (153,320 ) (165,133 ) (392,863 ) (420,046 ) Net premiums written $ 508,677 $ 346,407 $ 912,712 $ 796,754 Premiums earned Direct $ 21,606 $ 14,949 $ 44,507 $ 29,178 Assumed 468,372 350,389 850,975 735,987 Ceded (110,150 ) (104,922 ) (218,894 ) (218,215 ) Net premiums earned $ 379,828 $ 260,416 $ 676,588 $ 546,950 Claims and claim expenses Gross claims and claim expenses incurred $ 222,819 $ 97,064 $ 311,814 $ 165,214 Claims and claim expenses recovered (53,475 ) (15,676 ) (65,617 ) (24,911 ) Net claims and claim expenses incurred $ 169,344 $ 81,388 $ 246,197 $ 140,303

Debt and Credit Facilities

Debt and Credit Facilities	6 Months Ended
	Jun. 30, 2015
Debt Disclosure [Abstract]
Debt and Credit Facilities	DEBT AND CREDIT FACILITIES Debt Obligations A summary of the Company’s debt obligations on its consolidated balance sheets is set forth below: June 30, 2015 December 31, 2014 Fair Value Carrying Value Fair Value Carrying Value 3.700% Senior Notes due 2025 $ 290,025 $ 299,415 $ — $ — 5.75% Senior Notes due 2020 275,000 249,578 279,000 249,522 Series B 7.50% Senior Notes due 2017 274,063 274,618 — — 4.750% Senior Notes due 2025 (DaVinciRe) 145,688 148,751 — — $ 984,776 $ 972,362 $ 279,000 $ 249,522 3.700% Senior Notes due 2025 of RenaissanceRe Finance On March 24, 2015 , RenaissanceRe Finance issued $300.0 million of its 3.700% Senior Notes due April 1, 2025 , with interest on the notes payable on April 1 and October 1 of each year. The notes are guaranteed by RenaissanceRe and may be redeemed by RenaissanceRe Finance prior to maturity, subject to the payment of a “make-whole” premium if the notes are redeemed prior to January 1, 2025. The notes contain various covenants, including limitations on mergers and consolidations, and restrictions as to the disposition of, and the placing of liens on, stock of designated subsidiaries. The net proceeds from the offering of the notes (together with cash on hand) were applied by RenaissanceRe to repay in full a $300.0 million bridge loan that Barclays Bank PLC provided to RenaissanceRe on February 25, 2015 in order to finance a portion of the cash consideration paid by RenaissanceRe in connection with the acquisition of Platinum. Refer to “Note 3 . Acquisition of Platinum” for additional information related to the cash consideration paid by RenaissanceRe in connection with the acquisition of Platinum. 5.75% Senior Notes due 2020 of RenRe North America Holdings Inc. (“RRNAH”) On March 17, 2010, RRNAH issued $250.0 million of its 5.75% Senior Notes due March 15, 2020 , with interest on the notes payable on March 15 and September 15 of each year. RenaissanceRe Finance became a co-obligor of the notes as of July 3, 2015. The notes, which are senior obligations, are guaranteed by RenaissanceRe and may be redeemed by RRNAH prior to maturity, subject to the payment of a “make-whole” premium. The notes contain various covenants, including limitations on mergers and consolidations, and restrictions as to the disposition of, and the placing of liens on, stock of designated subsidiaries. Series B 7.50% Notes due 2017 of Platinum Underwriters Finance, Inc. On November 2, 2005, Platinum Underwriters Finance, Inc. (“Platinum Finance”) issued $250.0 million in aggregate principal amount of its Series B 7.50% Notes due June 1, 2017 (the “Platinum Finance Notes”). Interest on the Platinum Finance Notes is payable on June 1 and December 1 of each year. The Platinum Finance Notes, which are senior obligations, are guaranteed by RenaissanceRe, and may be redeemed by Platinum Finance prior to maturity, subject to the payment of a “make-whole” premium. The Platinum Finance Notes contain various covenants, including limitations on mergers and consolidations, and restrictions as to the disposition of, and the placing of liens on, the stock of designated subsidiaries. DaVinciRe Senior Notes On May 4, 2015 , DaVinciRe issued $150.0 million of its 4.750% Senior Notes due May 1, 2025 , with interest on the notes payable on May 1 and November 1, commencing with November 1, 2015 (the “DaVinciRe Senior Notes”). The DaVinciRe Senior Notes, which are senior obligations, may be redeemed prior to maturity, subject to the payment of a “make-whole” premium if the notes are redeemed before February 1, 2025. The DaVinciRe Senior Notes contain various covenants including restrictions as to the disposition of, and the placing of liens on, the stock of designated subsidiaries, limitations on mergers, amalgamations and consolidations, limitations on third party investor redemptions, a leverage covenant and a covenant to maintain certain ratings. The net proceeds from this offering were used to repay, in full, $100.0 million outstanding under the loan agreement, dated as of March 30, 2011, between DaVinciRe and RenaissanceRe, and the remainder of the net proceeds may be used to repurchase DaVinciRe shares or for general corporate purposes. Credit Facilities A summary of the Company’s credit facilities is set forth below: At June 30, 2015 Issued or Drawn RenaissanceRe Revolving Credit Facility $ — Uncommitted Standby Letter of Credit Facility with Wells Fargo 160,342 Uncommitted Standby Letter of Credit Facility with NAB — Bilateral Letter of Credit Facility with Citibank Europe 143,778 Funds at Lloyd’s Letter of Credit Facilities with Citibank Europe Renaissance Reinsurance 300,000 RenaissanceRe Specialty Risks 9,129 Total credit facilities in U.S. dollars $ 613,249 Funds at Lloyd’s Letter of Credit Facilities Renaissance Reinsurance Master Reimbursement Agreement £ 70,000 Total credit facilities in pound sterling £ 70,000 RenaissanceRe Revolving Credit Facility On May 15, 2015, RenaissanceRe entered into an amended and restated credit agreement with various banks and financial institutions (the “Revolving Credit Agreement”), which amended and restated the credit agreement, dated as of May 17, 2012, as amended. The Revolving Credit Agreement provides for a revolving commitment to RenaissanceRe of $250.0 million . RenaissanceRe has the right, subject to satisfying certain conditions, to increase the size of the facility to $350.0 million . Amounts borrowed under the Revolving Credit Agreement bear interest at a rate selected by RenaissanceRe equal to the Base Rate or LIBOR (each as defined in the Revolving Credit Agreement) plus a margin, as more fully set forth in the Revolving Credit Agreement. At June 30, 2015 , RenaissanceRe had $Nil outstanding under the Revolving Credit Agreement. The Revolving Credit Agreement contains representations, warranties and covenants customary for bank loan facilities of this type, including limits on the ability of RenaissanceRe and its subsidiaries to merge, consolidate, sell a substantial amount of assets, incur liens and declare or pay dividends under certain circumstances. The Revolving Credit Agreement also contains certain financial covenants which generally provide that the ratio of consolidated debt to capital shall not exceed 0.35 : 1 and that the consolidated net worth of RenaissanceRe shall equal or exceed approximately $2.9 billion . The net worth requirement is recalculated effective as of the end of each fiscal year. In case of certain events of default, in certain circumstances the lenders’ obligations to make loans may be terminated and the outstanding obligations of RenaissanceRe under the Revolving Credit Agreement may be accelerated. The scheduled commitment maturity date of the Revolving Credit Agreement is May 15, 2020. RRNAH, RenaissanceRe Finance, and Platinum Finance guarantee RenaissanceRe’s obligations under the Revolving Credit Agreement. Subject to certain exceptions, additional subsidiaries of RenaissanceRe are required to become guarantors if such subsidiaries issue or incur certain types of indebtedness. Uncommitted Standby Letter of Credit Facility with Wells Fargo Bank, National Association Renaissance Reinsurance, RenaissanceRe Specialty Risks, DaVinci, Platinum Bermuda and Renaissance Reinsurance U.S. (collectively, the “Applicants”) and RenaissanceRe are parties to a Standby Letter of Credit Agreement, as amended (the “Standby Letter of Credit Agreement”) with Wells Fargo Bank National Association (“Wells Fargo”) which provides for a secured, uncommitted facility under which letters of credit may be issued from time to time for the respective accounts of the Applicants. RenaissanceRe has unconditionally guaranteed the payment obligations of the Applicants, other than DaVinci. The Standby Letter of Credit Agreement contains representations, warranties and covenants that are customary for facilities of this type. At all times during which it is a party to the Standby Letter of Credit Agreement, each Applicant is required to pledge to Wells Fargo eligible collateral having a value (determined as provided in such agreement) that equals or exceeds the aggregate face amount of the outstanding letters of credit issued for its account plus all of such Applicant’s payment and reimbursement obligations in respect of such letters of credit. In the case of an event of default, Wells Fargo may exercise certain remedies, including conversion of collateral of a defaulting Applicant into cash. On May 15, 2015, all amounts outstanding under the Third Amended and Restated Credit Agreement, dated as of April 9, 2014, among Platinum, the subsidiaries of Platinum party thereto, the lenders party thereto, and Wells Fargo, as administrative agent were repaid and satisfied in full, the facility was terminated and all letters of credit that were issued and outstanding under the facility were transferred over to, and are now governed by the terms and conditions of, the Standby Letter of Credit Agreement. At June 30, 2015 , the Applicants had $160.3 million of letters of credit outstanding under the Standby Letter of Credit Agreement. National Australia Bank Limited Standby Letter of Credit Agreement Effective as of May 19, 2015, Renaissance Reinsurance, RenaissanceRe Specialty Risks, DaVinci and Platinum Bermuda (collectively, the “NAB Facility Applicants”) and RenaissanceRe entered into a Standby Letter of Credit Agreement (the “NAB Standby Letter of Credit Agreement”) with National Australia Bank Limited (“NAB”). The NAB Standby Letter of Credit Agreement provides for a secured, uncommitted facility under which letters of credit may be issued from time to time for the respective accounts of the NAB Facility Applicants in multiple currencies. RenaissanceRe has unconditionally guaranteed the payment obligations of the NAB Facility Applicants, other than DaVinci. The NAB Standby Letter of Credit Agreement contains representations, warranties and covenants that are customary for facilities of this type. At all times during which it is a party to the NAB Standby Letter of Credit Agreement, each NAB Facility Applicant is required to pledge to NAB eligible collateral having a value (determined as provided in such agreement) that equals or exceeds the aggregate stated amount of the letters of credit issued thereunder for its account, plus all of its reimbursement and payment obligations under the NAB Standby Letter of Credit Agreement. In the case of an event of default under the NAB Standby Letter of Credit Agreement, NAB may exercise certain remedies, including conversion of collateral of a defaulting NAB Facility Applicant into cash. Concurrently with the effectiveness of the NAB Standby Letter of Credit Agreement, all amounts outstanding under the Facility Agreement, dated as of July 31, 2012, among Platinum Bermuda, Platinum, the lenders party thereto and NAB, as agent for the finance parties were repaid and satisfied in full, the facility was terminated and all letters of credit that were issued and outstanding under the facility were transferred over to, and are now governed by the terms and conditions of, the NAB Standby Letter of Credit Agreement. At June 30, 2015 , the NAB Facility Applicants had $Nil outstanding under the NAB Standby Letter of Credit Agreement. Bilateral Letter of Credit Facility with Citibank Europe Pursuant to the facility letter, dated September 17, 2010, as amended, among Citibank Europe plc (“CEP”) and certain subsidiaries and affiliates of RenaissanceRe (the “Facility Letter”), CEP has established a letter of credit facility (the “Bilateral Facility”) under which CEP provides a commitment to issue letters of credit for the account of one or more of the Bilateral Facility Participants (as defined below) and their respective subsidiaries in multiple currencies. The “Bilateral Facility Participants” include Renaissance Reinsurance, DaVinci, RenaissanceRe Specialty Risks, Renaissance Reinsurance of Europe, RenaissanceRe Specialty U.S., Platinum Bermuda and Renaissance Reinsurance U.S. The aggregate commitment amount is $300.0 million , subject to (i) a sublimit of $50.0 million for letters of credit issued for the account of RenaissanceRe Specialty U.S. and (ii) a combined sublimit of $25.0 million for letters of credit issued for the accounts of Platinum Bermuda and Renaissance Reinsurance U.S. Effective March 31, 2015, the principal agreements evidencing the bilateral letter of credit facility that had previously been in place among CEP, Platinum Bermuda and Renaissance Reinsurance U.S. (the “Platinum/CEP Bilateral Facility”) were terminated. In addition, effective March 31, 2015, certain letters of credit issued on behalf of Platinum Bermuda and Renaissance Reinsurance U.S. under the Platinum/CEP Bilateral Facility are deemed to be letters of credit issued under, and governed by the terms of, the Bilateral Facility. The Bilateral Facility is scheduled to expire on December 31, 2015. At all times during which it is a party to the Bilateral Facility, each Bilateral Facility Participant is obligated to pledge to CEP securities with a value (determined as provided in such facility) that equals or exceeds the aggregate face amount of its then-outstanding letters of credit. In the case of an event of default under the Bilateral Facility with respect to a Bilateral Facility Participant, CEP may exercise certain remedies, including terminating its commitment to such Bilateral Facility Participant and taking certain actions with respect to the collateral pledged by such Bilateral Facility Participant (including the sale thereof). In the Facility Letter, each Bilateral Facility Participant makes representations and warranties that are customary for facilities of this type and agrees that it will comply with certain informational and other undertakings, including those regarding the delivery of quarterly and annual financial statements. At June 30, 2015 , $143.8 million aggregate face amount of letters of credit was outstanding and, subject to the sublimits described above, $156.2 million remained unused and available to the Bilateral Facility Participants under the Bilateral Facility. Funds at Lloyd’s Letter of Credit Facilities Effective November 24, 2014, Renaissance Reinsurance and CEP entered into a Second Amended and Restated Pledge Agreement (the “Renaissance Reinsurance Pledge Agreement”) in respect of its letter of credit facility with CEP which is evidenced by the Master Agreement, dated as of April 29, 2009 (the “Renaissance Reinsurance Master Agreement”), and which provides for the issuance and renewal of letters of credit that are used to support business written by Syndicate 1458. During the term of the Renaissance Reinsurance Master Agreement, Renaissance Reinsurance has agreed to pledge to CEP certain qualifying securities with a value (determined as provided in the Renaissance Reinsurance Pledge Agreement) that equals or exceeds the aggregate face amount of the then-outstanding letters of credit issued under the Renaissance Reinsurance Master Agreement. At June 30, 2015 , letters of credit issued by CEP under the Renaissance Reinsurance Master Reimbursement Agreement were outstanding in the face amount of $300.0 million and £70.0 million , respectively. Effective November 24, 2014, RenaissanceRe Specialty Risks and CEP entered into the Master Agreement (the “Specialty Risks Master Agreement” and, together with the Renaissance Reinsurance Master Agreement, the “Master Agreements”), which provides for the issuance and renewal by CEP for the account of RenaissanceRe Specialty Risks of letters of credit that are used to support business written by Syndicate 1458, and a related Pledge Agreement (the “Specialty Risks Pledge Agreement” and, together with the Renaissance Reinsurance Pledge Agreement, the “Pledge Agreements”). During the term of the Specialty Risks Master Agreement, RenaissanceRe Specialty Risks has agreed to pledge to CEP certain qualifying securities with a value (determined as provided in the Specialty Risks Pledge Agreement) equal to the aggregate face amount of the then-outstanding letters of credit issued under the Specialty Risks Master Agreement. At June 30, 2015 , letters of credit issued by CEP under the Specialty Risks Master Agreement were outstanding in the face amount of $9.1 million . Each of the Master Agreements and the Pledge Agreements contains representations, warranties and covenants that are customary for facilities of this type. Top Layer Re Renaissance Reinsurance is party to a collateralized letter of credit and reimbursement agreement in the amount of $37.5 million that supports the Company’s Top Layer Re joint venture. Renaissance Reinsurance is obligated to make a mandatory capital contribution of up to $50.0 million in the event that a loss reduces Top Layer Re’s capital below a specified level.

Noncontrolling Interests

Noncontrolling Interests	6 Months Ended
	Jun. 30, 2015
Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest [Abstract]
Noncontrolling Interests	NONCONTROLLING INTERESTS A summary of the Company’s noncontrolling interests on its consolidated balance sheets is set forth below: June 30, December 31, 2014 Redeemable noncontrolling interest - DaVinciRe $ 879,266 $ 1,037,306 Redeemable noncontrolling interest - Medici 109,546 94,402 Redeemable noncontrolling interest $ 988,812 $ 1,131,708 A summary of the Company’s noncontrolling interests on its consolidated statements of operations set forth below: Three months ended Six months ended June 30, June 30, June 30, June 30, Redeemable noncontrolling interest - DaVinciRe $ 12,345 $ 35,706 $ 50,671 $ 76,886 Redeemable noncontrolling interest - Medici (178 ) 372 1,158 1,960 Net income attributable to noncontrolling interests $ 12,167 $ 36,078 $ 51,829 $ 78,846 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 noncontrolling interests. The Company’s noncontrolling economic ownership in DaVinciRe was 26.3% at June 30, 2015 ( December 31, 2014 - 23.4% ). 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. Payment will be made by April 1, following delivery of the audited financial statements for the year in which the repurchase was effective. The repurchase price is subject to a true-up for development on outstanding loss reserves after settlement of all claims relating to the applicable years. 2014 During January 2014, DaVinciRe redeemed a portion of its outstanding shares from all existing DaVinciRe shareholders, including RenaissanceRe, while a new DaVinciRe shareholder purchased shares in DaVinciRe. The net redemption as a result of this transaction was $300.0 million . In connection with the redemption, DaVinciRe retained a $30.0 million holdback. The Company’s noncontrolling economic ownership in DaVinciRe subsequent to this transaction was 26.5% , effective January 1, 2014. Effective July 1, 2014 , RenaissanceRe sold a portion of its shares of DaVinciRe to an existing third party shareholder for $38.9 million . The Company's ownership in DaVinciRe was 26.5% at June 30, 2014 and subsequent to the above transaction, its ownership interest in DaVinciRe decreased to 23.4% effective July 1, 2014 . 2015 During January 2015, DaVinciRe redeemed a portion of its outstanding shares from certain existing DaVinciRe shareholders, including the Company. 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. 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 Six months ended June 30, June 30, June 30, June 30, Beginning balance $ 867,734 $ 895,391 $ 1,037,306 $ 1,063,368 Redemption of shares from redeemable noncontrolling interest (813 ) (866 ) (208,711 ) (219,745 ) Sale of shares to redeemable noncontrolling interests — — — 9,722 Net income attributable to redeemable noncontrolling interest 12,345 35,706 50,671 76,886 Ending balance $ 879,266 $ 930,231 $ 879,266 $ 930,231 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 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. 2014 During 2014, third-party investors subscribed for and redeemed an aggregate of $57.3 million and $3.1 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 53.2% , effective December 31, 2014. 2015 During the six months ended June 30, 2015 , third-party investors subscribed for and redeemed an aggregate of $31.1 million and $17.1 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 46.5% , effective June 30, 2015 . 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 Six months ended June 30, June 30, June 30, June 30, Beginning balance $ 100,697 $ 91,590 $ 94,402 $ 36,492 Redemption of shares from redeemable noncontrolling interest (2,423 ) — (17,107 ) (1,875 ) Sale of shares to redeemable noncontrolling interests 11,450 1,699 31,093 57,084 Net income attributable to redeemable noncontrolling interest (178 ) 372 1,158 1,960 Ending balance $ 109,546 $ 93,661 $ 109,546 $ 93,661

Variable Interest Entities

Variable Interest Entities	6 Months Ended
	Jun. 30, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Variable Interest Entities	VARIABLE INTEREST ENTITIES Upsilon Fund Effective November 13, 2014, the Company incorporated Upsilon Fund, an exempted Bermuda limited 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 considered a VIE as the voting rights of the equity investors are not proportionate with the respective obligation to absorb expected losses or the right to receive expected residual returns. The Company does not have the obligation to absorb the losses, nor the right to receive the benefits, in accordance with the accounting guidance, that could be significant to Upsilon Fund. However, the Company does have the power over the activities that most significantly impact the economic performance of Upsilon Fund. Since the Company does not meet both criteria noted above, the Company is not the primary beneficiary of Upsilon Fund, and accordingly, does not consolidate Upsilon Fund. The Company has not provided any financial or other support to Upsilon Fund that was not contractually required to be provided. 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 . Both Upsilon RFO and the insurance participation are managed by RUM in return for an expense override and profit commission. 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: (i) has the power over the activities that most significantly impact the economic performance of Upsilon RFO and (ii) has the obligation to absorb losses and the right to receive benefits, in accordance with the accounting guidance, that could be significant to Upsilon RFO. As a result, the Company consolidates Upsilon RFO and all significant inter-company transactions have been eliminated. The Company has not provided financial or other support to Upsilon RFO that was not contractually required to be provided. 2014 In conjunction with risks incepting during the first quarter of 2014, $172.4 million of Upsilon RFO non-voting preference shares were sold to unaffiliated third-party investors. Additionally, $109.7 million of the non-voting preference shares were acquired by the Company, representing a 38.9% participation in the risks assumed by Upsilon RFO incepting during the first quarter of 2014. In addition, another third party investor supplied $15.0 million of capital through an insurance contract with the Company related to Upsilon RFO’s reinsurance portfolio. Inclusive of the insurance contract, the Company had a 33.6% participation in the original risks assumed by Upsilon RFO in conjunction with risks incepting during the first quarter of 2014. In conjunction with risks incepting during the second quarter of 2014, $43.1 million of Upsilon RFO non-voting preference shares were sold to unaffiliated third-party investors. Additionally, $13.5 million of the non-voting preference shares were acquired by the Company, representing a 23.9% participation in the risks assumed by Upsilon RFO incepting during the second quarter of 2014. In addition, another third party investor supplied $5.0 million of capital through an insurance contract with the Company related to Upsilon RFO’s reinsurance portfolio. Inclusive of the insurance contract, the Company had a 15.0% participation in the original risks assumed by Upsilon RFO in conjunction with risks incepting during the second quarter of 2014. 2015 During the first six months of 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 $419.4 million , including $131.4 million related to the Company, with $418.5 million of this having been repaid to date, including $131.1 million related to the Company. In conjunction with risks incepting during the first six months of 2015 , $155.4 million of Upsilon RFO non-voting preference shares were sold to unaffiliated third-party investors through their investment in Upsilon Fund. Additionally, $42.2 million of the non-voting preference shares were acquired by the Company, representing a 20.5% participation in the risks assumed by Upsilon RFO incepting during the first six months of 2015 . At June 30, 2015 , the Company’s consolidated balance sheet included total assets and total liabilities of Upsilon RFO of $261.9 million and $261.9 million , respectively ( December 31, 2014 - $621.3 million and $621.3 million , respectively, including $135.7 million of capital raised from third party investors and received by Upsilon RFO prior to December 31, 2014 for risks incepted during the first quarter of 2015). 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 June 30, 2015 , the total assets and total liabilities of Mona Lisa Re were $179.0 million and $179.0 million , respectively ( December 31, 2014 - $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 $0.6 million and $0.5 million , respectively, during the six months ended June 30, 2015 ( 2014 - $2.0 million and $1.9 million , respectively). In addition, Renaissance Reinsurance and DaVinci recognized ceded premiums earned related to the ceded reinsurance contracts with Mona Lisa Re of $3.6 million and $2.5 million , respectively, during the six months ended June 30, 2015 ( 2014 - $5.0 million and $3.6 million , respectively).

Shareholders' Equity

Shareholders' Equity	6 Months Ended
	Jun. 30, 2015
Stockholders' Equity Note [Abstract]
Shareholders' Equity	SHAREHOLDERS’ EQUITY Dividends The Board of Directors of RenaissanceRe declared a dividend of $0.30 per common share to common shareholders of record on March 13, 2015 and June 15, 2015, respectively, and RenaissanceRe paid a dividend of $0.30 per common share to common shareholders on March 31, 2015 and June 30, 2015, respectively. During the six months ended June 30, 2015 , the Company declared and paid $11.2 million in preference share dividends ( 2014 - $11.2 million ) and $27.5 million in common share dividends ( 2014 - $23.6 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. Unless terminated earlier by resolution of 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 six months ended June 30, 2015 , the Company repurchased an aggregate of 83 thousand shares in open market transactions at an aggregate cost of $8.4 million , and at an average share price of $101.99 . At June 30, 2015 , $491.9 million remained available for repurchase under the Board authorized share repurchase program. See “Note 16 . Subsequent Events” and “Part II, Item 2 - Unregistered Sales of Equity Securities and use of Proceeds” for additional information related to share repurchases.

Earnings Per Share

Earnings Per Share	6 Months Ended
	Jun. 30, 2015
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 Six months ended (thousands of shares) June 30, June 30, June 30, June 30, Numerator: Net income available to RenaissanceRe common shareholders $ 73,233 $ 120,752 $ 241,076 $ 271,755 Amount allocated to participating common shareholders (1) (819 ) (1,557 ) (2,781 ) (3,577 ) Net income allocated to RenaissanceRe common shareholders $ 72,414 $ 119,195 $ 238,295 $ 268,178 Denominator: Denominator for basic income per RenaissanceRe common share - weighted average common shares 45,303 39,736 42,467 40,487 Per common share equivalents of employee stock options and restricted shares 354 659 372 662 Denominator for diluted income per RenaissanceRe common share - adjusted weighted average common shares and assumed conversions 45,657 40,395 42,839 41,149 Net income available to RenaissanceRe common shareholders per common share – basic $ 1.60 $ 3.00 $ 5.61 $ 6.62 Net income available to RenaissanceRe common shareholders per common share – diluted $ 1.59 $ 2.95 $ 5.56 $ 6.52 (1) Represents earnings attributable to holders of unvested restricted shares issued under the Company’s 2001 Stock Incentive Plan and Non-Employee Director Stock Incentive Plan.

Segment Reporting

Segment Reporting	6 Months Ended
	Jun. 30, 2015
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 current 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 acquisition related expenses. 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 June 30, 2015 Catastrophe Reinsurance Specialty Reinsurance Lloyd’s Other Total Gross premiums written $ 385,366 $ 160,013 $ 116,618 $ — $ 661,997 Net premiums written $ 270,490 $ 139,867 $ 98,320 $ — $ 508,677 Net premiums earned $ 162,705 $ 155,584 $ 61,539 $ — $ 379,828 Net claims and claim expenses incurred 55,376 86,062 27,683 223 169,344 Acquisition expenses 19,314 28,251 14,210 (109 ) 61,666 Operational expenses 22,090 18,747 13,719 117 54,673 Underwriting income (loss) $ 65,925 $ 22,524 $ 5,927 $ (231 ) 94,145 Net investment income 38,604 38,604 Net foreign exchange losses (1,740 ) (1,740 ) Equity in earnings of other ventures 6,160 6,160 Other income 1,427 1,427 Net realized and unrealized losses on investments (26,712 ) (26,712 ) Corporate expenses (13,032 ) (13,032 ) Interest expense (9,698 ) (9,698 ) Income before taxes and noncontrolling interests 89,154 Income tax expense 1,842 1,842 Net income attributable to noncontrolling interests (12,167 ) (12,167 ) Dividends on preference shares (5,596 ) (5,596 ) Net income available to RenaissanceRe common shareholders $ 73,233 Net claims and claim expenses incurred – current accident year $ 67,334 $ 104,315 $ 30,771 $ — $ 202,420 Net claims and claim expenses incurred – prior accident years (11,958 ) (18,253 ) (3,088 ) 223 (33,076 ) Net claims and claim expenses incurred – total $ 55,376 $ 86,062 $ 27,683 $ 223 $ 169,344 Net claims and claim expense ratio – current accident year 41.4 % 67.0 % 50.0 % — % 53.3 % Net claims and claim expense ratio – prior accident years (7.4 )% (11.7 )% (5.0 )% — % (8.7 )% Net claims and claim expense ratio – calendar year 34.0 % 55.3 % 45.0 % — % 44.6 % Underwriting expense ratio 25.5 % 30.2 % 45.4 % — % 30.6 % Combined ratio 59.5 % 85.5 % 90.4 % — % 75.2 % Six months ended June 30, 2015 Catastrophe Reinsurance Specialty Reinsurance Lloyd’s Other Total Gross premiums written (1) $ 774,613 $ 284,304 $ 246,748 $ (90 ) $ 1,305,575 Net premiums written $ 493,130 $ 243,782 $ 175,889 $ (89 ) $ 912,712 Net premiums earned $ 306,472 $ 250,460 $ 119,745 $ (89 ) $ 676,588 Net claims and claim expenses incurred 62,970 125,650 57,526 51 246,197 Acquisition expenses 26,968 48,940 28,903 256 105,067 Operational expenses 42,453 32,037 25,659 145 100,294 Underwriting income (loss) $ 174,081 $ 43,833 $ 7,657 $ (541 ) 225,030 Net investment income 78,311 78,311 Net foreign exchange losses (4,870 ) (4,870 ) Equity in earnings of other ventures 11,455 11,455 Other income 2,966 2,966 Net realized and unrealized gains on investments 15,037 15,037 Corporate expenses (58,630 ) (58,630 ) Interest expense (14,949 ) (14,949 ) Income before taxes and noncontrolling interests 254,350 Income tax benefit 49,746 49,746 Net income attributable to noncontrolling interests (51,829 ) (51,829 ) Dividends on preference shares (11,191 ) (11,191 ) Net income available to RenaissanceRe common shareholders $ 241,076 Net claims and claim expenses incurred – current accident year $ 91,458 $ 153,579 $ 56,381 $ — $ 301,418 Net claims and claim expenses incurred – prior accident years (28,488 ) (27,929 ) 1,145 51 (55,221 ) Net claims and claim expenses incurred – total $ 62,970 $ 125,650 $ 57,526 $ 51 $ 246,197 Net claims and claim expense ratio – current accident year 29.8 % 61.3 % 47.1 % — % 44.5 % Net claims and claim expense ratio – prior accident years (9.3 )% (11.1 )% 0.9 % (57.3 )% (8.1 )% Net claims and claim expense ratio – calendar year 20.5 % 50.2 % 48.0 % (57.3 )% 36.4 % Underwriting expense ratio 22.7 % 32.3 % 45.6 % (450.6 )% 30.3 % Combined ratio 43.2 % 82.5 % 93.6 % (507.9 )% 66.7 % (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 six months ended June 30, 2015 . Three months ended June 30, 2014 Catastrophe Reinsurance Specialty Reinsurance Lloyd’s Other Total Gross premiums written $ 388,083 $ 51,554 $ 71,903 $ — $ 511,540 Net premiums written $ 233,698 $ 46,254 $ 66,452 $ 3 $ 346,407 Net premiums earned $ 159,152 $ 53,588 $ 47,672 $ 4 $ 260,416 Net claims and claim expenses incurred 36,730 20,075 25,111 (528 ) 81,388 Acquisition expenses 17,806 11,699 10,122 (6,150 ) 33,477 Operational expenses 22,200 10,514 13,058 69 45,841 Underwriting income (loss) $ 82,416 $ 11,300 $ (619 ) $ 6,613 99,710 Net investment income 34,541 34,541 Net foreign exchange gains 2,392 2,392 Equity in earnings of other ventures 7,232 7,232 Other loss (535 ) (535 ) Net realized and unrealized gains on investments 27,128 27,128 Corporate expenses (3,954 ) (3,954 ) Interest expense (4,292 ) (4,292 ) Income before taxes and noncontrolling interests 162,222 Income tax benefit 204 204 Net income attributable to noncontrolling interests (36,078 ) (36,078 ) Dividends on preference shares (5,596 ) (5,596 ) Net income available to RenaissanceRe common shareholders $ 120,752 Net claims and claim expenses incurred – current accident year $ 38,473 $ 25,443 $ 34,555 $ — $ 98,471 Net claims and claim expenses incurred – prior accident years (1,743 ) (5,368 ) (9,444 ) (528 ) (17,083 ) Net claims and claim expenses incurred – total $ 36,730 $ 20,075 $ 25,111 $ (528 ) $ 81,388 Net claims and claim expense ratio – current accident year 24.2 % 47.5 % 72.5 % — % 37.8 % Net claims and claim expense ratio – prior accident years (1.1 )% (10.0 )% (19.8 )% (13,200.0 )% (6.5 )% Net claims and claim expense ratio – calendar year 23.1 % 37.5 % 52.7 % (13,200.0 )% 31.3 % Underwriting expense ratio 25.1 % 41.4 % 48.6 % (152,025.0 )% 30.4 % Combined ratio 48.2 % 78.9 % 101.3 % (165,225.0 )% 61.7 % Six months ended June 30, 2014 Catastrophe Reinsurance Specialty Reinsurance Lloyd’s Other Total Gross premiums written $ 855,794 $ 205,844 $ 155,162 $ — $ 1,216,800 Net premiums written $ 493,187 $ 171,743 $ 131,821 $ 3 $ 796,754 Net premiums earned $ 323,736 $ 123,218 $ 99,969 $ 27 $ 546,950 Net claims and claim expenses incurred 43,185 46,156 51,392 (430 ) 140,303 Acquisition expenses 24,932 28,246 20,689 (6,690 ) 67,177 Operational expenses 42,619 20,620 25,091 135 88,465 Underwriting income $ 213,000 $ 28,196 $ 2,797 $ 7,012 251,005 Net investment income 73,489 73,489 Net foreign exchange gains 1,331 1,331 Equity in earnings of other ventures 11,431 11,431 Other loss (473 ) (473 ) Net realized and unrealized gains on investments 42,055 42,055 Corporate expenses (8,499 ) (8,499 ) Interest expense (8,585 ) (8,585 ) Income before taxes and noncontrolling interests 361,754 Income tax benefit 38 38 Net income attributable to noncontrolling interests (78,846 ) (78,846 ) Dividends on preference shares (11,191 ) (11,191 ) Net income available to RenaissanceRe common shareholders $ 271,755 Net claims and claim expenses incurred – current accident year $ 51,002 $ 67,365 $ 55,712 $ — $ 174,079 Net claims and claim expenses incurred – prior accident years (7,817 ) (21,209 ) (4,320 ) (430 ) (33,776 ) Net claims and claim expenses incurred – total $ 43,185 $ 46,156 $ 51,392 $ (430 ) $ 140,303 Net claims and claim expense ratio – current accident year 15.8 % 54.7 % 55.7 % — % 31.8 % Net claims and claim expense ratio – prior accident years (2.5 )% (17.2 )% (4.3 )% (1,592.6 )% (6.1 )% Net claims and claim expense ratio – calendar year 13.3 % 37.5 % 51.4 % (1,592.6 )% 25.7 % Underwriting expense ratio 20.9 % 39.6 % 45.8 % (24,277.8 )% 28.4 % Combined ratio 34.2 % 77.1 % 97.2 % (25,870.4 )% 54.1 %

Derivative Instruments

Derivative Instruments	6 Months Ended
	Jun. 30, 2015
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 accounts for its derivatives in accordance with FASB ASC Topic Derivatives and Hedging , which requires all derivatives to be recorded at fair value on the Company’s balance sheet as either assets or liabilities, depending on the rights or obligations of the derivatives, with changes in fair value reflected in current earnings. The Company does not currently apply hedge accounting in respect of any positions reflected in its consolidated financial statements. 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 June 30, 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 $ 849 743 $ 106 Other assets $ — $ 106 Foreign currency forward contracts (1) 1,153 133 1,020 Other assets — 1,020 Foreign currency forward contracts (2) 803 157 646 Other assets — 646 Credit default swaps 274 135 139 Other assets 60 79 Total $ 3,079 $ 1,168 $ 1,911 $ 60 $ 1,851 Derivative Liabilities At June 30, 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 $ 872 743 $ 129 Other liabilities $ 129 $ — Foreign currency forward contracts (1) 6,589 1,017 5,572 Other liabilities — 5,572 Foreign currency forward contracts (2) 320 157 163 Other liabilities — 163 Credit default swaps 250 135 115 Other liabilities — 115 Weather contract 14 — 14 Other liabilities 14 — Total $ 8,045 $ 2,052 $ 5,993 $ 143 $ 5,850 (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, 2014 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 $ 468 468 $ — Other assets $ — $ — Foreign currency forward contracts (1) 5,740 1,737 4,003 Other assets — 4,003 Foreign currency forward contracts (2) 3,959 648 3,311 Other assets — 3,311 Credit default swaps 468 88 380 Other assets 310 70 Total $ 10,635 $ 2,941 $ 7,694 $ 310 $ 7,384 Derivative Liabilities At December 31, 2014 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 $ 1,037 468 $ 569 Other liabilities $ 569 $ — Foreign currency forward contracts (1) 1,319 967 352 Other liabilities — 352 Foreign currency forward contracts (2) 724 649 75 Other liabilities — 75 Credit default swaps 251 88 163 Other liabilities — 163 Weather contract 190 — 190 Other liabilities 190 — Total $ 3,521 $ 2,172 $ 1,349 $ 759 $ 590 (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 4 . 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 June 30, 2015 2014 Interest rate futures Net realized and unrealized (losses) gains on investments $ 19,784 $ (7,362 ) Foreign currency forward contracts (1) Net foreign exchange (losses) gains (10,210 ) (1,990 ) Foreign currency forward contracts (2) Net foreign exchange (losses) gains (3,417 ) 58 Credit default swaps Net realized and unrealized (losses) gains on investments 22 299 Weather contract Net realized and unrealized (losses) gains on investments 10 179 Call rights Other income (loss) — 2,220 Total $ 6,189 $ (6,596 ) Location of gain (loss) recognized on derivatives Amount of gain (loss) recognized on derivatives Six months ended June 30, 2015 2014 Interest rate futures Net realized and unrealized (losses) gains on investments $ 15,376 $ (19,636 ) Foreign currency forward contracts (1) Net foreign exchange (losses) gains (6,599 ) 2,109 Foreign currency forward contracts (2) Net foreign exchange (losses) gains 5,793 (1,341 ) Credit default swaps Net realized and unrealized (losses) gains on investments 62 458 Weather contract Net realized and unrealized (losses) gains on investments 170 1,395 Call rights Other income (loss) — 2,220 Total $ 14,802 $ (14,795 ) (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 June 30, 2015 . 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 June 30, 2015 , the Company had $1,355.9 million of notional long positions and $1,414.0 million of notional short positions of primarily Eurodollar, U.S. treasury and non-U.S. dollar futures contracts ( December 31, 2014 - $587.0 million and $617.4 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 June 30, 2015 , the Company had outstanding underwriting related foreign currency contracts of $162.4 million in notional long positions and $126.2 million in notional short positions, denominated in U.S. dollars ( December 31, 2014 - $144.8 million and $121.6 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 June 30, 2015 , the Company had outstanding investment portfolio related foreign currency contracts of $32.2 million in notional long positions and $127.3 million in notional short positions, denominated in U.S. dollars ( December 31, 2014 - $35.8 million and $150.1 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 June 30, 2015 , the Company had outstanding credit derivatives of $Nil in notional long positions and $32.7 million in notional short positions, denominated in U.S. dollars ( December 31, 2014 - $4.6 million and $19.4 million , respectively). Weather Contract The Company, from time to time, transacts in certain derivative-based risk management products that address weather-related risks. The fair value of these contracts is determined through the use of an internal valuation model with the inputs to the internal valuation model based on proprietary data as observable market inputs are not available. The most significant unobservable input is the potential payment that would become due to a counterparty following the occurrence of a triggering event as reported by an external agency. Generally, the Company’s portfolio of such derivatives is relatively small and such derivatives are frequently seasonal in nature. At June 30, 2015 , the Company had an outstanding weather contract with an insurance company of $2.1 million in a notional short position ( December 31, 2014 - $2.2 million ). Call Rights At June 30, 2014, the Company had an agreement with a counterparty that gave the counterparty the right to purchase shares the Company has in certain of its equity method investees at a price above the Company’s then carrying value for those investments. The agreement was considered a derivative for accounting purposes and the Company’s estimated fair value of the agreement was $2.2 million at June 30, 2014. The fair value was based on an internal valuation model which incorporated the estimated intrinsic value of the agreement, the time value of money, and the likelihood of the agreement being exercised and ultimately settled.

Commitments, Contingencies and

Commitments, Contingencies and Other Items	6 Months Ended
	Jun. 30, 2015
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, 2014 , other than those discussed below and in “Note 7 . Debt and Credit Facilities.” Contingent Gain During the second quarter of 2015, a decision was reached by the U.S. Court of Appeals for the District of Columbia Circuit in a case between the IRS and a Bermuda-based reinsurance company (the “Plaintiff”) in favor of the Plaintiff. In deciding the case, the U.S. Court of Appeals concluded that federal excise tax does not apply to foreign to foreign retrocessions. The IRS, however, may take further action related to this decision. As a result of this decision by the U.S. Court of Appeals, it is possible the Company may recognize a gain in a future period, currently estimated to be $8.5 million , related to its foreign to foreign retrocessional federal excise tax contributions. The realization and recognition of the gain would be subject to the ultimate outcome of any future appeals in the case by the IRS, as well as the application of the current or future court decisions to the Company’s specific facts and circumstances. 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	6 Months Ended
	Jun. 30, 2015
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 June 30, 2015 and December 31, 2014 , condensed consolidating statements of operations and condensed consolidating statements of comprehensive income for the three and six months ended June 30, 2015 and 2014 , and condensed consolidating statements of cash flow for the six months ended June 30, 2015 and 2014 . Each of RRNAH, Platinum Finance and RenaissanceRe Finance is a 100% owned subsidiary of RenaissanceRe. In connection with an intercompany restructuring, subsequent to June 30, 2015 and effective July 1, 2015, Platinum was merged with RenaissanceRe, with RenaissanceRe continuing as the surviving company and RenaissanceRe assumed all of the obligations of Platinum with respect to, and is the sole guarantor of, the Platinum Finance Notes. Refer to “Note 7 . Debt and Credit Facilities” for information related to the Company’s debt obligations. Condensed Consolidating Balance Sheet at June 30, 2015 RenaissanceRe Platinum Underwriters Holdings, Ltd. (Subsidiary Guarantor) RenRe North Platinum Underwriters Finance, Inc. (Subsidiary Issuer) RenaissanceRe Finance, Inc. (Subsidiary Issuer) Other Consolidating RenaissanceRe Assets Total investments $ 182,375 $ — $ 88,177 $ 282,027 $ — $ 8,727,688 $ — $ 9,280,267 Cash and cash equivalents 2,535 9,181 2,146 1,089 224 382,915 — 398,090 Investments in subsidiaries 4,550,601 648,991 258,980 611,580 828,023 — (6,898,175 ) — Due from subsidiaries and affiliates 79,807 27,612 15 — — — (107,434 ) — Premiums receivable — — — — — 1,068,819 — 1,068,819 Prepaid reinsurance premiums — — — — — 276,231 — 276,231 Reinsurance recoverable — — — — — 136,464 — 136,464 Accrued investment income 462 — 173 307 — 36,538 — 37,480 Deferred acquisition costs — — — — — 195,291 (21,883 ) 173,408 Receivable for investments sold 56 — 21 151 — 148,835 — 149,063 Other assets 20,921 — 32,250 3,125 121,323 198,964 (118,962 ) 257,621 Goodwill and other intangible assets 267,945 — — — — 7,798 — 275,743 Total assets $ 5,104,702 $ 685,784 $ 381,762 $ 898,279 $ 949,570 $ 11,179,543 $ (7,146,454 ) $ 12,053,186 Liabilities, Noncontrolling Interests and Shareholders’ Equity Liabilities Reserve for claims and claim expenses $ — $ — $ — $ — $ — $ 2,828,161 $ 19,487 $ 2,847,648 Unearned premiums — — — — — 1,155,596 — 1,155,596 Debt 117,000 — 249,568 250,000 299,415 148,761 (92,382 ) 972,362 Amounts due to subsidiaries and affiliates 60,202 1,872 218 23 407 — (62,722 ) — Reinsurance balances payable — — — — — 512,019 — 512,019 Payable for investments purchased 2,979 — 38 233 — 508,001 — 511,251 Other liabilities 87,577 336 2,380 — 3,357 202,854 (67,950 ) 228,554 Total liabilities 267,758 2,208 252,204 250,256 303,179 5,355,392 (203,567 ) 6,227,430 Redeemable noncontrolling interest — — — — — 988,812 — 988,812 Shareholders’ Equity Total shareholders’ equity 4,836,944 683,576 129,558 648,023 646,391 4,835,339 (6,942,887 ) 4,836,944 Total liabilities, noncontrolling interests and shareholders’ equity $ 5,104,702 $ 685,784 $ 381,762 $ 898,279 $ 949,570 $ 11,179,543 $ (7,146,454 ) $ 12,053,186 (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, 2014 RenaissanceRe Holdings Ltd. (Parent Guarantor) RenRe North America Holdings Inc. (Subsidiary Issuer) Other RenaissanceRe Holdings Ltd. Subsidiaries and Eliminations (Non-guarantor Subsidiaries) (1) Consolidating Adjustments (2) RenaissanceRe Consolidated Assets Total investments $ 137,006 $ 88,150 $ 6,518,594 $ — $ 6,743,750 Cash and cash equivalents 5,986 1,033 518,565 — 525,584 Investments in subsidiaries 3,509,974 71,796 — (3,581,770 ) — Due from subsidiaries and affiliates 126,548 23 — (126,571 ) — Premiums receivable — — 440,007 — 440,007 Prepaid reinsurance premiums — — 94,810 — 94,810 Reinsurance recoverable — — 66,694 — 66,694 Accrued investment income — 121 26,388 — 26,509 Deferred acquisition costs — — 110,059 — 110,059 Receivable for investments sold 10 — 52,380 — 52,390 Other assets 112,400 1,242 123,661 (101,458 ) 135,845 Goodwill and other intangible assets — — 7,902 — 7,902 Total assets $ 3,891,924 $ 162,365 $ 7,959,060 $ (3,809,799 ) $ 8,203,550 Liabilities, Redeemable Noncontrolling Interest and Shareholders’ Equity Liabilities Reserve for claims and claim expenses $ — $ — $ 1,412,510 $ — $ 1,412,510 Unearned premiums — — 512,386 — 512,386 Debt — 249,522 — — 249,522 Amounts due to subsidiaries and affiliates 6,000 233 — (6,233 ) — Reinsurance balances payable — — 454,580 — 454,580 Payable for investments purchased — — 203,021 — 203,021 Other liabilities 20,209 4,013 351,344 (1,458 ) 374,108 Total liabilities 26,209 253,768 2,933,841 (7,691 ) 3,206,127 Redeemable noncontrolling interest — — 1,131,708 — 1,131,708 Shareholders’ Equity Total shareholders’ equity 3,865,715 (91,403 ) 3,893,511 (3,802,108 ) 3,865,715 Total liabilities, redeemable noncontrolling interest and shareholders’ equity $ 3,891,924 $ 162,365 $ 7,959,060 $ (3,809,799 ) $ 8,203,550 (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 Platinum Underwriters Holdings, Ltd. (Subsidiary Guarantor) RenRe North Platinum Underwriters Finance, Inc. (Subsidiary Issuer) RenaissanceRe Finance, Inc. (Subsidiary Issuer) Other Consolidating RenaissanceRe Revenues Net premiums earned $ — $ — $ — $ — $ — $ 379,828 $ — $ 379,828 Net investment income 98 — 300 1,221 468 37,342 (825 ) 38,604 Net foreign exchange gains (losses) 12 — — — — (1,752 ) — (1,740 ) Equity in earnings of other ventures — — — — — 6,160 — 6,160 Other income 15,692 497 — — — 431 (15,193 ) 1,427 Net realized and unrealized (losses) gains on investments (535 ) — 609 (1,389 ) — (25,397 ) — (26,712 ) Total revenues 15,267 497 909 (168 ) 468 396,612 (16,018 ) 397,567 Expenses Net claims and claim expenses incurred — — — — — 171,023 (1,679 ) 169,344 Acquisition expenses — — — — — 73,537 (11,871 ) 61,666 Operational expenses (1,300 ) 932 1,588 — — 51,334 2,119 54,673 Corporate expenses 6,373 980 153 109 77 5,449 (109 ) 13,032 Interest expense 468 — 3,616 4,687 2,790 880 (2,743 ) 9,698 Total expenses 5,541 1,912 5,357 4,796 2,867 302,223 (14,283 ) 308,413 Income (loss) before equity in net income (loss) of subsidiaries and taxes 9,726 (1,415 ) (4,448 ) (4,964 ) (2,399 ) 94,389 (1,735 ) 89,154 Equity in net income (loss) of subsidiaries 72,555 (805 ) 127 565 (2,443 ) (11,916 ) (58,083 ) — Income (loss) before taxes 82,281 (2,220 ) (4,321 ) (4,399 ) (4,842 ) 82,473 (59,818 ) 89,154 Income tax (expense) benefit (3,452 ) — 1,743 1,956 888 707 — 1,842 Net income (loss) 78,829 (2,220 ) (2,578 ) (2,443 ) (3,954 ) 83,180 (59,818 ) 90,996 Net income attributable to noncontrolling interests — — — — — (12,167 ) — (12,167 ) Net income (loss) attributable to RenaissanceRe 78,829 (2,220 ) (2,578 ) (2,443 ) (3,954 ) 71,013 (59,818 ) 78,829 Dividends on preference shares (5,596 ) — — — — — — (5,596 ) Net income (loss) attributable to RenaissanceRe common shareholders $ 73,233 $ (2,220 ) $ (2,578 ) $ (2,443 ) $ (3,954 ) $ 71,013 $ (59,818 ) $ 73,233 (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 June 30, 2015 RenaissanceRe Platinum Underwriters Holdings, Ltd. (Subsidiary Guarantor) RenRe North Platinum Underwriters Finance, Inc. (Subsidiary Issuer) RenaissanceRe Finance, Inc. (Subsidiary Issuer) Other Consolidating RenaissanceRe Comprehensive income (loss) Net income (loss) $ 78,829 $ (2,220 ) $ (2,578 ) $ (2,443 ) $ (3,954 ) $ 83,180 $ (59,818 ) $ 90,996 Change in net unrealized gains on investments — — — — — (349 ) — (349 ) Comprehensive income (loss) 78,829 (2,220 ) (2,578 ) (2,443 ) (3,954 ) 82,831 (59,818 ) 90,647 Net income attributable to noncontrolling interests — — — — — (12,167 ) — (12,167 ) Comprehensive income attributable to noncontrolling interests — — — — — (12,167 ) — (12,167 ) Comprehensive income (loss) attributable to RenaissanceRe $ 78,829 $ (2,220 ) $ (2,578 ) $ (2,443 ) $ (3,954 ) $ 70,664 $ (59,818 ) $ 78,480 (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 Platinum Underwriters Holdings, Ltd. (Subsidiary Guarantor) RenRe North Platinum Underwriters Finance, Inc. (Subsidiary Issuer) RenaissanceRe Finance, Inc. (Subsidiary Issuer) Other Consolidating RenaissanceRe Revenues Net premiums earned $ — $ — $ — $ — $ — $ 676,588 $ — $ 676,588 Net investment income 2,722 — 631 1,181 504 75,072 (1,799 ) 78,311 Net foreign exchange gains (losses) 2 — — — — (4,872 ) — (4,870 ) Equity in earnings of other ventures — — — — — 11,455 — 11,455 Other income 21,881 663 — — — 1,639 (21,217 ) 2,966 Net realized and unrealized (losses) gains on investments (496 ) — 1,015 (1,388 ) — 15,906 — 15,037 Total revenues 24,109 663 1,646 (207 ) 504 775,788 (23,016 ) 779,487 Expenses Net claims and claim expenses incurred — — — — — 248,435 (2,238 ) 246,197 Acquisition expenses — — — — — 121,855 (16,788 ) 105,067 Operational expenses (2,478 ) 5,919 3,478 1 — 85,849 7,525 100,294 Corporate expenses 22,677 9,162 251 144 84 26,456 (144 ) 58,630 Interest expense 763 — 7,233 6,250 3,006 1,474 (3,777 ) 14,949 Total expenses 20,962 15,081 10,962 6,395 3,090 484,069 (15,422 ) 525,137 Income (loss) before equity in net income (loss) of subsidiaries and taxes 3,147 (14,418 ) (9,316 ) (6,602 ) (2,586 ) 291,719 (7,594 ) 254,350 Equity in net income (loss) of subsidiaries 256,235 (7,362 ) 17,526 (1,581 ) (5,656 ) — (259,162 ) — Income (loss) before taxes 259,382 (21,780 ) 8,210 (8,183 ) (8,242 ) 291,719 (266,756 ) 254,350 Income tax (expense) benefit (7,115 ) — 32,748 2,527 953 20,633 — 49,746 Net income (loss) 252,267 (21,780 ) 40,958 (5,656 ) (7,289 ) 312,352 (266,756 ) 304,096 Net income attributable to noncontrolling interests — — — — — (51,829 ) — (51,829 ) Net income (loss) attributable to RenaissanceRe 252,267 (21,780 ) 40,958 (5,656 ) (7,289 ) 260,523 (266,756 ) 252,267 Dividends on preference shares (11,191 ) — — — — — — (11,191 ) Net income (loss) attributable to RenaissanceRe common shareholders $ 241,076 $ (21,780 ) $ 40,958 $ (5,656 ) $ (7,289 ) $ 260,523 $ (266,756 ) $ 241,076 (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) for the six months ended June 30, 2015 RenaissanceRe Platinum Underwriters Holdings, Ltd. (Subsidiary Guarantor) RenRe North Platinum Underwriters Finance, Inc. (Subsidiary Issuer) RenaissanceRe Finance, Inc. (Subsidiary Issuer) Other Consolidating RenaissanceRe Comprehensive income (loss) Net income (loss) $ 252,267 $ (21,780 ) $ 40,958 $ (5,656 ) $ (7,289 ) $ 312,352 $ (266,756 ) $ 304,096 Change in net unrealized gains on investments — — — — — (423 ) — (423 ) Comprehensive income (loss) 252,267 (21,780 ) 40,958 (5,656 ) (7,289 ) 311,929 (266,756 ) 303,673 Net income attributable to noncontrolling interests — — — — — (51,829 ) — (51,829 ) Comprehensive income attributable to noncontrolling interests — — — — — (51,829 ) — (51,829 ) Comprehensive income (loss) attributable to RenaissanceRe $ 252,267 $ (21,780 ) $ 40,958 $ (5,656 ) $ (7,289 ) $ 260,100 $ (266,756 ) $ 251,844 (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 RenaissanceRe Holdings Ltd. (Parent Guarantor) RenRe North America Holdings Inc. (Subsidiary Issuer) Other RenaissanceRe Holdings Ltd. Subsidiaries and Eliminations (Non-guarantor Subsidiaries) (1) Consolidating Adjustments (2) RenaissanceRe Consolidated Revenues Net premiums earned $ — $ — $ 260,416 $ — $ 260,416 Net investment income 736 445 34,293 (933 ) 34,541 Net foreign exchange gains 6 — 2,386 — 2,392 Equity in earnings of other ventures — — 7,232 — 7,232 Other loss — — (535 ) — (535 ) Net realized and unrealized gains on investments 190 4,340 22,598 — 27,128 Total revenues 932 4,785 326,390 (933 ) 331,174 Expenses Net claims and claim expenses incurred — — 81,388 — 81,388 Acquisition expenses — — 33,477 — 33,477 Operational expenses (1,236 ) 1,684 45,483 (90 ) 45,841 Corporate expenses 3,468 59 427 — 3,954 Interest expense — 3,616 676 — 4,292 Total expenses 2,232 5,359 161,451 (90 ) 168,952 (Loss) income before equity in net income (loss) of subsidiaries and taxes (1,300 ) (574 ) 164,939 (843 ) 162,222 Equity in net income (loss) of subsidiaries 127,648 (38 ) — (127,610 ) — Income (loss) before taxes 126,348 (612 ) 164,939 (128,453 ) 162,222 Income tax (expense) benefit — (38 ) 242 — 204 Net income (loss) 126,348 (650 ) 165,181 (128,453 ) 162,426 Net income attributable to noncontrolling interests — — (36,078 ) — (36,078 ) Net income (loss) attributable to RenaissanceRe 126,348 (650 ) 129,103 (128,453 ) 126,348 Dividends on preference shares (5,596 ) — — — (5,596 ) Net income (loss) available (attributable) to RenaissanceRe common shareholders $ 120,752 $ (650 ) $ 129,103 $ (128,453 ) $ 120,752 (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 June 30, 2014 RenaissanceRe Holdings Ltd. (Parent Guarantor) RenRe North America Holdings Inc. (Subsidiary Issuer) Other RenaissanceRe Holdings Ltd. Subsidiaries and Eliminations (Non-guarantor Subsidiaries) (1) Consolidating Adjustments (2) RenaissanceRe Consolidated Comprehensive income (loss) Net income (loss) $ 126,348 $ (650 ) $ 165,181 $ (128,453 ) $ 162,426 Change in net unrealized gains on investments — — (45 ) — (45 ) Comprehensive income (loss) 126,348 (650 ) 165,136 (128,453 ) 162,381 Net income attributable to noncontrolling interests — — (36,078 ) — (36,078 ) Comprehensive income attributable to noncontrolling interests — — (36,078 ) — (36,078 ) Comprehensive income (loss) attributable to RenaissanceRe $ 126,348 $ (650 ) $ 129,058 $ (128,453 ) $ 126,303 (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 RenaissanceRe Holdings Ltd. (Parent Guarantor) RenRe North America Holdings Inc. (Subsidiary Issuer) Other RenaissanceRe Holdings Ltd. Subsidiaries and Eliminations (Non-guarantor Subsidiaries) (1) Consolidating Adjustments (2) RenaissanceRe Consolidated Revenues Net premiums earned $ — $ — $ 546,950 $ — $ 546,950 Net investment income 1,361 919 73,079 (1,870 ) 73,489 Net foreign exchange gains 7 — 1,324 — 1,331 Equity in earnings of other ventures — — 11,431 — 11,431 Other loss — (8 ) (465 ) — (473 ) Net realized and unrealized gains on investments 84 4,717 37,254 — 42,055 Total revenues 1,452 5,628 669,573 (1,870 ) 674,783 Expenses Net claims and claim expenses incurred — — 140,303 — 140,303 Acquisition expenses — — 67,177 — 67,177 Operational expenses (2,116 ) 3,578 87,171 (168 ) 88,465 Corporate expenses 7,470 118 911 — 8,499 Interest expense — 7,233 1,352 — 8,585 Total expenses 5,354 10,929 296,914 (168 ) 313,029 (Loss) income before equity in net income of subsidiaries and taxes (3,902 ) (5,301 ) 372,659 (1,702 ) 361,754 Equity in net income of subsidiaries 286,848 815 — (287,663 ) — Income (loss) before taxes 282,946 (4,486 ) 372,659 (289,365 ) 361,754 Income tax benefit (expense) — 646 (608 ) — 38 Net income (loss) 282,946 (3,840 ) 372,051 (289,365 ) 361,792 Net income attributable to noncontrolling interests — — (78,846 ) — (78,846 ) Net income (loss) attributable to RenaissanceRe 282,946 (3,840 ) 293,205 (289,365 ) 282,946 Dividends on preference shares (11,191 ) — — — (11,191 ) Net income (loss) available (attributable) to RenaissanceRe common shareholders $ 271,755 $ (3,840 ) $ 293,205 $ (289,365 ) $ 271,755 (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 six months ended June 30, 2014 RenaissanceRe Holdings Ltd. (Parent Guarantor) RenRe North America Holdings Inc. (Subsidiary Issuer) Other RenaissanceRe Holdings Ltd. Subsidiaries and Eliminations (Non-guarantor Subsidiaries) (1) Consolidating Adjustments (2) RenaissanceRe Consolidated Comprehensive income (loss) Net income (loss) $ 282,946 $ (3,840 ) $ 372,051 $ (289,365 ) $ 361,792 Change in net unrealized gains on investments — — (213 ) — (213 ) Comprehensive income (loss) 282,946 (3,840 ) 371,838 (289,365 ) 361,579 Net income attributable to noncontrolling interests — — (78,846 ) — (78,846 ) Comprehensive income attributable to noncontrolling interests — — (78,846 ) — (78,846 ) Comprehensive income (loss) attributable to RenaissanceRe $ 282,946 $ (3,840 ) $ 292,992 $ (289,365 ) $ 282,733 (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 Platinum Underwriters Holdings, Ltd. (Subsidiary Guarantor) RenRe North Platinum Underwriters Finance, Inc. (Subsidiary Issuer) RenaissanceRe Finance, Inc. (Subsidiary Issuer) Other RenaissanceRe Consolidated Cash flows provided by (used in) operating activities Net cash provided by (used in) operating activities $ 66,113 $ (1,326 ) $ (5,393 ) $ (10,030 ) $ (119,583 ) $ 40,849 $ (29,370 ) Cash flows (used in) provided by investing activities Proceeds from sales and maturities of fixed maturity investments trading 14,718 — 7,016 45,087 — 4,695,154 4,761,975 Purchases of fixed maturity investments trading (56,559 ) — (38,668 ) — — (4,500,891 ) (4,596,118 ) Proceeds from sales and maturities of fixed maturity investments available for sale — — — — — 5,000 5,000 Net sales (purchases) of equity investments trading — — 33,687 (273,501 ) — 73,329 (166,485 ) Net (purchases) sales of short term investments (1,088 ) — (5,848 ) 238,048 — 129,050 360,162 Net purchases of other investments — — — — — (1,250 ) (1,250 ) Net purchases of investments in other ventures — — — — — (45 ) (45 ) Net sales of other assets — — — — — 4,500 4,500 Dividends and return of capital from subsidiaries 1,009,161 (30,000 ) — — — (979,161 ) — Contributions to subsidiaries (205,362 ) — 10,342 — (180,000 ) 375,020 — Due (from) to subsidiary (3,595 ) (21,913 ) (23 ) (52 ) 407 25,176 — Net purchase of Platinum (904,433 ) 62,420 — 1,537 — 162,324 (678,152 ) Net cash (used in) provided by investing activities (147,158 ) 10,507 6,506 11,119 (179,593 ) (11,794 ) (310,413 ) Cash flows provided by (used in) financing activities Dividends paid – RenaissanceRe common shares (27,479 ) — — — — — (27,479 ) Dividends paid – preference shares (11,191 ) — — — — — (11,191 ) RenaissanceRe common share repurchases (736 ) — — — — — (736 ) Net issuance (repayment) of debt 117,000 — — — 299,400 29,189 445,589 Net third party redeemable noncontrolling interest share transactions — — — — — (187,064 ) (187,064 ) Net cash provided by (used in) financing activities 77,594 — — — 299,400 (157,875 ) 219,119 Effect of exchange rate changes on foreign currency cash — — — — — (6,830 ) (6,830 ) Net (decrease) increase in cash and cash equivalents (3,451 ) 9,181 1,113 1,089 224 (135,650 ) (127,494 ) Cash and cash equivalents, beginning of period 5,986 — 1,033 — — 518,565 525,584 Cash and cash equivalents, end of period $ 2,535 $ 9,181 $ 2,146 $ 1,089 $ 224 $ 382,915 $ 398,090 (1) Includes all other subsidiaries of RenaissanceRe Holdings Ltd. and eliminations. Condensed Consolidating Statement of Cash Flows RenaissanceRe Holdings Ltd. (Parent Guarantor) RenRe North America Holdings Inc. (Subsidiary Issuer) Other RenaissanceRe Holdings Ltd. Subsidiaries and Eliminations (Non-guarantor Subsidiaries) (1) RenaissanceRe Consolidated Cash flows (used in) provided by operating activities Net cash (used in) provided by operating activities $ (14,828 ) $ (8,410 ) $ 196,624 $ 173,386 Cash flows provided by (used in) investing activities Proceeds from sales and maturities of fixed maturity investments trading 4,912 5,353 4,009,909 4,020,174 Purchases of fixed maturity investments trading (79,714 ) — (3,890,603 ) (3,970,317 ) Proceeds from sales and maturities of fixed maturity investments available for sale — — 5,114 5,114 Net purchases of equity investments trading — (370 ) (10,776 ) (11,146 ) Net sales (purchases) of short term investments 116,511 (68 ) (26,894 ) 89,549 Net sales of other investments — — 68,684 68,684 Net sales of investments in other ventures — — 1,030 1,030 Net sales of other assets — — 6,000 6,000 Dividends and return of capital from subsidiaries 359,891 5,406 (365,297 ) — Contributions to subsidiaries (47,220 ) (1,950 ) 49,170 — Due to (from) subsidiaries 4,123 (777 ) (3,346 ) — Net cash provided by (used in) investing activities 358,503 7,594 (157,009 ) 209,088 Cash flows used in financing activities Dividends paid – RenaissanceRe common shares (23,550 ) — — (23,550 ) Dividends paid – preference shares (11,191 ) — — (11,191 ) RenaissanceRe common share repurchases (314,536 ) — — (314,536 ) Net third party redeemable noncontrolling interest share transactions — — (144,096 ) (144,096 ) Net cash used in financing activities (349,277 ) — (144,096 ) (493,373 ) Effect of exchange rate changes on foreign currency cash — — (2,676 ) (2,676 ) Net decrease in cash and cash equivalents (5,602 ) (816 ) (107,157 ) (113,575 ) Cash and cash equivalents, beginning of period 8,796 4,027 395,209 408,032 Cash and cash equivalents, end of period $ 3,194 $ 3,211 $ 288,052 $ 294,457 (1) Includes all other subsidiaries of RenaissanceRe Holdings Ltd. and eliminations.

Subsequent Events

Subsequent Events	6 Months Ended
	Jun. 30, 2015
Subsequent Events [Abstract]
Subsequent Events	SUBSEQUENT EVENTS Subsequent to June 30, 2015 and through the period ended July 27, 2015 , the Company repurchased 67 thousand common shares in open market transactions at an aggregate cost of $6.9 million and at an average share price of $102.70 .

Significant Accounting Polici24

Significant Accounting Policies (Policy)	6 Months Ended
	Jun. 30, 2015
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 Issued Accounting Pronouncements Not Yet Adopted	RECENTLY ISSUED ACCOUNTING PRONOUNCEMENTS NOT YET ADOPTED Revenue from Contracts with Customers In May 2014, the Financial Accounting Standards Board (the “FASB”) issued Accounting Standards Update (“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 was to be effective for public business entities in annual and interim periods beginning after December 15, 2016, however in July 2015, the FASB decided to defer by one year the effective dates of ASU 2014-09, and as a result, ASU 2014-09 will be effective for public business entities in annual and interim period 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. 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 is effective for all entities in annual and interim periods beginning after December 15, 2015. Entities may apply the amendments in ASU 2014-12 either (a) prospectively to all awards granted or modified after the effective date or (b) retrospectively to all awards with performance targets that are outstanding as of the beginning of the earliest annual period presented in the financial statements and to all new or modified awards thereafter. 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. 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 is effective for public business entities for fiscal years, and for interim periods within those fiscal years, beginning after December 15, 2015. 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. 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 is effective for public business entities in annual and interim periods beginning after December 15, 2015. Early adoption is permitted. ASU 2015-03 provides for retroactive application, and upon transition, applicable disclosures for a change in an accounting principle would be provided, including the transition method, a description of the prior period information that has been retroactively adjusted, and the effect of the change on the applicable financial statement line items. 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 in 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. 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 is 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 is permitted. As this guidance is disclosure-related only, the adoption of this guidance is not expected to have a material impact on the Company’s statements of operations and financial position.

Acquisition of Platinum (Tables

Acquisition of Platinum (Tables)	6 Months Ended
	Jun. 30, 2015
Business Combinations [Abstract]
Schedule of Business Acquisitions	The Company's total purchase price for Platinum at March 2, 2015 was calculated as follows: Special Dividend Number of Platinum common shares and Platinum equity awards canceled in the acquisition of Platinum 25,320,312 Special Dividend per outstanding common share of Platinum and Platinum equity award $ 10.00 Special Dividend paid to common shareholders of Platinum and holders of Platinum equity awards $ 253,203 RenaissanceRe common shares Common shares issued by RenaissanceRe 7,434,561 Common share price of RenaissanceRe as of March 2, 2015 $ 102.47 Market value of RenaissanceRe common shares issued by RenaissanceRe to common shareholders of Platinum and holders of Platinum equity awards 761,819 Platinum common shares Fair value of Platinum common shares owned by RenaissanceRe and canceled in connection with the acquisition of Platinum 12,950 Cash consideration Number of Platinum common shares and Platinum equity awards canceled in the acquisition of Platinum 25,320,312 Platinum common shares owned by RenaissanceRe and canceled in connection with the acquisition of Platinum (169,220 ) Number of Platinum common shares and Platinum equity awards canceled in the acquisition of Platinum excluding those owned by RenaissanceRe and canceled in connection with the acquisition of Platinum 25,151,092 Agreed cash price paid to common shareholders of Platinum and holders of Platinum equity awards $ 35.96 Cash consideration paid by RenaissanceRe to common shareholders of Platinum and holders of Platinum equity awards 904,433 Total purchase price 1,932,405 Less: Special Dividend paid by Platinum (253,203 ) Net purchase price $ 1,679,202 The Company recognized identifiable finite lived intangible assets of $75.2 million , which will be amortized over a weighted average period of 8 years , identifiable indefinite lived intangible assets of $8.4 million , and certain other adjustments to the fair values of the assets acquired, liabilities assumed and shareholders’ equity of Platinum at March 2, 2015 as summarized in the table below: Shareholders’ equity of Platinum prior to Special Dividend $ 1,737,278 Cash and cash equivalents (Special Dividend on Platinum common shares and Platinum equity awards) (253,203 ) Adjusted shareholders’ equity of Platinum at March 2, 2015 1,484,075 Adjustments for fair value, by applicable balance sheet caption: Deferred acquisition costs (44,486 ) Debt (28,899 ) Reserve for claims and claim expenses (21,725 ) Other assets - deferred debt issuance costs (1,046 ) Total adjustments for fair value by applicable balance sheet caption before tax impact (96,156 ) Other assets - net deferred tax asset related to fair value adjustments 29,069 Total adjustments for fair value by applicable balance sheet caption (67,087 ) Adjustments for fair value of the identifiable intangible assets: Identifiable indefinite lived intangible assets (insurance licenses) 8,400 Identifiable finite lived intangible assets (non-contractual relationships, renewal rights, value of business acquired, trade name, internally developed and used computer software and covenants not to compete) 75,200 Identifiable intangible assets before tax impact 83,600 Other liabilities - deferred tax liability on identifiable intangible assets (13,115 ) Total adjustments for fair value of the identifiable intangible assets 70,485 Total adjustments for fair value by applicable balance sheet caption and identifiable intangible assets 3,398 Shareholders’ equity of Platinum at fair value 1,487,473 Total net purchase price paid by RenaissanceRe 1,679,202 Excess purchase price over the fair value of net assets acquired assigned to goodwill $ 191,729 The following table summarizes the results of Platinum since March 2, 2015 that have been included in the Company's consolidated statements of operations and comprehensive income. Three months ended June 30, 2015 Six months ended June 30, 2015 Total revenues $ 106,691 $ 146,830 Net loss attributable to RenaissanceRe common shareholders (1) $ 5,004 $ (14,435 ) (1) Includes $5.8 million and $34.2 million of transaction, integration and compensation-related costs associated with the acquisition of Platinum for the three and six months ended June 30, 2015 , respectively.
Schedule of Identifiable Intangible Assets Acquired	Identifiable intangible assets at March 2, 2015 and at June 30, 2015 , consisted of the following, and are included in goodwill and other intangible assets on the Company’s consolidated balance sheet: Amount Economic Useful Life Key non-contractual relationships $ 30,400 10 years Value of business acquired 20,200 2 years Renewal rights 15,800 15 years Insurance licenses 8,400 Indefinite Internally developed and used computer software 3,500 2 years Other non-contractual relationships 2,300 3 years Non-compete agreements 1,900 2.5 years Trade name 1,100 6 months Identifiable intangible assets, before amortization, at March 2, 2015 83,600 Amortization (from March 2, 2015 through June 30, 2015) (7,385 ) Net identifiable intangible assets at June 30, 2015 related to the acquisition of Platinum $ 76,215
Schedule of Pro Forma Information	The following table presents unaudited pro forma consolidated financial information for the three and six months ended June 30, 2015 and 2014 and assumes the acquisition of Platinum occurred on January 1, 2014. The unaudited pro forma consolidated financial information is provided for informational purposes only and is not necessarily, and should not be assumed to be, an indication of the results that would have been achieved had the transaction been completed as of January 1, 2014 or that may be achieved in the future. The unaudited pro forma consolidated financial information does not give consideration to the impact of possible revenue enhancements, expense efficiencies, synergies or asset dispositions that may result from the acquisition of Platinum. In addition, unaudited pro forma consolidated financial information does not include the effects of costs associated with any restructuring or integration activities resulting from the acquisition of Platinum, as they are nonrecurring. Three months ended Six months ended June 30, 2015 June 30, 2014 June 30, June 30, 2014 Total revenues $ 397,567 $ 488,999 $ 858,120 $ 1,003,016 Net income available to RenaissanceRe common shareholders 73,233 174,678 256,039 373,772

Investments (Tables)

Investments (Tables)	6 Months Ended
	Jun. 30, 2015
Investments [Abstract]
Schedule of Fair Value of Fixed Maturity Investments Trading	The following table summarizes the fair value of fixed maturity investments trading: June 30, December 31, U.S. treasuries $ 2,020,746 $ 1,671,471 Agencies 144,947 96,208 Municipal 806,724 — Non-U.S. government (Sovereign debt) 370,613 280,651 Non-U.S. government-backed corporate 172,381 146,467 Corporate 1,865,369 1,610,442 Agency mortgage-backed 474,966 312,333 Non-agency mortgage-backed 253,044 241,590 Commercial mortgage-backed 419,218 373,117 Asset-backed 63,426 24,406 Total fixed maturity investments trading $ 6,591,434 $ 4,756,685
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 June 30, 2015 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Non-Credit Other-Than- Temporary Impairments (1) Agency mortgage-backed $ 903 $ 10 $ (9 ) $ 904 $ — Non-agency mortgage-backed 8,498 1,790 (3 ) 10,285 613 Commercial mortgage-backed 7,182 495 — 7,677 — Asset-backed 2,801 87 — 2,888 — Total fixed maturity investments available for sale $ 19,384 $ 2,382 $ (12 ) $ 21,754 $ 613 Included in Accumulated Other Comprehensive Income December 31, 2014 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Non-Credit Other-Than- Temporary Impairments (1) Agency mortgage-backed $ 3,928 $ 359 $ — $ 4,287 $ — Non-agency mortgage-backed 9,478 1,985 (3 ) 11,460 656 Commercial mortgage-backed 7,291 643 — 7,934 — Asset-backed 3,075 129 — 3,204 — Total fixed maturity investments available for sale $ 23,772 $ 3,116 $ (3 ) $ 26,885 $ 656 (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 June 30, 2015 Amortized Cost Fair Value Amortized Cost Fair Value Amortized Cost Fair Value Due in less than one year $ 220,880 $ 219,382 $ — $ — $ 220,880 $ 219,382 Due after one through five years 3,862,284 3,859,616 — — 3,862,284 3,859,616 Due after five through ten years 983,765 970,723 — — 983,765 970,723 Due after ten years 337,497 331,059 — — 337,497 331,059 Mortgage-backed 1,135,710 1,147,228 16,583 18,866 1,152,293 1,166,094 Asset-backed 63,356 63,426 2,801 2,888 66,157 66,314 Total $ 6,603,492 $ 6,591,434 $ 19,384 $ 21,754 $ 6,622,876 $ 6,613,188
Schedule of Fair Value of Equity Investments Trading	The following table summarizes the fair value of equity investments trading: June 30, December 31, Financials $ 228,777 $ 222,190 Communications and technology 84,522 31,376 Industrial, utilities and energy 71,168 28,859 Consumer 50,764 19,522 Healthcare 48,572 16,582 Basic materials 9,253 3,569 Total $ 493,056 $ 322,098
Schedule of Net Investment Income	The components of net investment income are as follows: Three months ended Six months ended June 30, June 30, June 30, June 30, Fixed maturity investments $ 33,791 $ 26,372 $ 59,730 $ 50,232 Short term investments 297 286 494 476 Equity investments 1,913 779 4,517 1,575 Other investments Hedge funds and private equity investments 5,425 8,340 15,838 20,657 Other 674 1,483 4,182 6,011 Cash and cash equivalents 127 93 275 184 42,227 37,353 85,036 79,135 Investment expenses (3,623 ) (2,812 ) (6,725 ) (5,646 ) Net investment income $ 38,604 $ 34,541 $ 78,311 $ 73,489
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 Six months ended June 30, June 30, June 30, June 30, Gross realized gains $ 8,672 $ 12,166 $ 30,204 $ 25,633 Gross realized losses (21,552 ) (2,587 ) (26,423 ) (8,151 ) Net realized (losses) gains on fixed maturity investments (12,880 ) 9,579 3,781 17,482 Net unrealized (losses) gains on fixed maturity investments trading (48,104 ) 29,918 (22,132 ) 57,800 Net realized and unrealized gains (losses) on investments-related derivatives 19,816 (6,884 ) 15,608 (17,783 ) Net realized gains on equity investments trading 8,832 5,134 16,313 5,055 Net unrealized gains (losses) on equity investments trading 5,624 (10,619 ) 1,467 (20,499 ) Net realized and unrealized (losses) gains on investments $ (26,712 ) $ 27,128 $ 15,037 $ 42,055
Schedule of Components of Other Comprehensive Income and Reclassification Out of Accumulated Other Comprehensive Income	The following tables provide an analysis of the components of other comprehensive income and reclassifications out of accumulated other comprehensive income. Three months ended June 30, 2015 Investments in other ventures Fixed maturity investments available for sale Total Beginning balance $ 412 $ 2,930 $ 3,342 Other comprehensive income (loss) before reclassifications 211 (273 ) (62 ) Amounts reclassified from accumulated other comprehensive income by statement of operations line item: Realized gains reclassified from accumulated other comprehensive income to net realized and unrealized gains on investments — (287 ) (287 ) Net current-period other comprehensive income (loss) 211 (560 ) (349 ) Ending balance $ 623 $ 2,370 $ 2,993 Six months ended June 30, 2015 Investments in other ventures Fixed maturity investments available for sale Total Beginning balance $ 303 $ 3,113 $ 3,416 Other comprehensive income (loss) before reclassifications 320 (405 ) (85 ) Amounts reclassified from accumulated other comprehensive income by statement of operations line item: Realized gains reclassified from accumulated other comprehensive income to net realized and unrealized gains on investments — (338 ) (338 ) Net current-period other comprehensive income (loss) 320 (743 ) (423 ) Ending balance $ 623 $ 2,370 $ 2,993 Three months ended June 30, 2014 Investments in other ventures Fixed maturity investments available for sale Total Beginning balance $ 160 $ 3,803 $ 3,963 Other comprehensive income (loss) before reclassifications 51 (96 ) (45 ) Ending balance $ 211 $ 3,707 $ 3,918 Six months ended June 30, 2014 Investments in other ventures Fixed maturity investments available for sale Total Beginning balance $ 163 $ 3,968 $ 4,131 Other comprehensive gain (loss) before reclassifications 48 (261 ) (213 ) Ending balance $ 211 $ 3,707 $ 3,918
Schedule of Fixed Maturity Investments Available For Sale In Continual Unrealized Loss Position	The following tables provide an analysis of the length of time the Company’s fixed maturity investments available for sale in an unrealized loss have been in a continual unrealized loss position. Less than 12 Months 12 Months or Greater Total At June 30, 2015 Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses Agency mortgage-backed $ 569 $ (9 ) $ — $ — $ 569 $ (9 ) Non-agency mortgage-backed — — 65 (3 ) 65 (3 ) Total $ 569 $ (9 ) $ 65 $ (3 ) $ 634 $ (12 ) Less than 12 Months 12 Months or Greater Total December 31, 2014 Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses Non-agency mortgage-backed $ — $ — $ 69 $ (3 ) $ 69 $ (3 ) Total $ — $ — $ 69 $ (3 ) $ 69 $ (3 )
Rollforward of the Amount of Other-Than-Temporary Impairments Related To Credit Losses Recognized in Earnings For Which A Portion Of An Other-Than-Temporary Impairment Was Recognized In Accumulated Other Comprehensive Income	The following table provides a rollforward of the amount of other-than-temporary impairments related to credit losses recognized in earnings for which a portion of an other-than-temporary impairment was recognized in accumulated other comprehensive income: Three months ended Six months ended June 30, June 30, June 30, June 30, Beginning balance $ 485 $ 545 $ 498 $ 561 Reductions: Securities sold during the period (19 ) (16 ) (32 ) (32 ) Ending balance $ 466 $ 529 $ 466 $ 529

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	6 Months Ended
	Jun. 30, 2015
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 June 30, 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 $ 2,020,746 $ 2,020,746 $ — $ — Agencies 144,947 — 144,947 — Municipal 806,724 — 806,724 — Non-U.S. government (Sovereign debt) 370,613 — 370,613 — Non-U.S. government-backed corporate 172,381 — 172,381 — Corporate 1,865,369 — 1,857,709 7,660 Agency mortgage-backed 475,870 — 475,870 — Non-agency mortgage-backed 263,329 — 263,329 — Commercial mortgage-backed 426,895 — 426,895 — Asset-backed 66,314 — 66,314 — Total fixed maturity investments 6,613,188 2,020,746 4,584,782 7,660 Short term investments 1,543,191 — 1,543,191 — Equity investments trading 493,056 493,056 — — Other investments Private equity partnerships 250,796 — — 250,796 Catastrophe bonds 228,998 — 228,998 — Senior secured bank loan fund 22,561 — — 22,561 Hedge funds 2,338 — — 2,338 Total other investments 504,693 — 228,998 275,695 Other assets and (liabilities) Assumed and ceded (re)insurance contracts 75,701 — — 75,701 Derivatives (1) (4,082 ) (23 ) (4,045 ) (14 ) Other (4,583 ) — (4,583 ) — Total other assets and (liabilities) 67,036 (23 ) (8,628 ) 75,687 $ 9,221,164 $ 2,513,779 $ 6,348,343 $ 359,042 (1) See “Note 13 . Derivative Instruments” for additional information related to the fair value by type of contract, of derivatives entered into by the Company. At December 31, 2014 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 $ 1,671,471 $ 1,671,471 $ — $ — Agencies 96,208 — 96,208 — Non-U.S. government (Sovereign debt) 280,651 — 280,651 — Non-U.S. government-backed corporate 146,467 — 146,467 — Corporate 1,610,442 — 1,594,782 15,660 Agency mortgage-backed 316,620 — 316,620 — Non-agency mortgage-backed 253,050 — 253,050 — Commercial mortgage-backed 381,051 — 381,051 — Asset-backed 27,610 — 27,610 — Total fixed maturity investments 4,783,570 1,671,471 3,096,439 15,660 Short term investments 1,013,222 — 1,013,222 — Equity investments trading 322,098 322,098 — — Other investments Private equity partnerships 281,932 — — 281,932 Catastrophe bonds 200,329 — 200,329 — Senior secured bank loan funds 19,316 — — 19,316 Hedge funds 2,570 — — 2,570 Total other investments 504,147 — 200,329 303,818 Other assets and (liabilities) Assumed and ceded (re)insurance contracts (8,744 ) — — (8,744 ) Derivatives (1) 6,345 (569 ) 7,104 (190 ) Other (11,509 ) — (11,509 ) — Total other assets and (liabilities) (13,908 ) (569 ) (4,405 ) (8,934 ) $ 6,609,129 $ 1,993,000 $ 4,305,585 $ 310,544 (1) See “Note 13 . 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 June 30, 2015 Fair Value (Level 3) Valuation Technique Unobservable (U) and Observable (O) Inputs Low High Weighted Average or Actual Fixed maturity investments Corporate $ 7,660 Discounted cash flow (“DCF”) Credit spread (U) n/a n/a 3.6 % Liquidity discount (U) n/a n/a 1.0 % Risk-free rate (O) n/a n/a 0.3 % Dividend rate (O) n/a n/a 6.5 % Total fixed maturity investments 7,660 Other investments Private equity partnerships 250,796 Net asset valuation Estimated performance (U) (30.2 )% 14.0 % 3.1 % Senior secured bank loan fund 22,561 Net asset valuation Estimated performance (U) n/a n/a 1.2 % Hedge funds 2,338 Net asset valuation Estimated performance (U) 0.0 % 0.0 % 0.0 % Total other investments 275,695 Other assets and (liabilities) Assumed and ceded (re)insurance contracts 82,905 Internal valuation model Estimated performance (U) n/a n/a 3.0 % Assumed and ceded (re)insurance contracts (1,308 ) Internal valuation model Bond price (U) $ 96.23 $ 99.78 $ 97.48 Liquidity premium (U) n/a n/a 1.3 % Assumed and ceded (re)insurance contracts (5,896 ) Internal valuation model Net undiscounted cash flows (U) n/a n/a $ (9,233 ) Expected loss ratio (U) n/a n/a 28.0 % Net acquisition expense ratio (O) n/a n/a 14.0 % Contract period (O) 194 1,100 824 Discount rate (U) n/a n/a 1.0 % Total assumed and ceded (re)insurance contracts 75,701 Weather contract (14 ) Internal valuation model See below n/a n/a See below Total other assets and (liabilities) 75,687 $ 359,042
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 investments Other assets and (liabilities) Total Balance - April 1, 2015 $ 15,474 $ 293,126 $ 72,969 $ 381,569 Total unrealized (losses) gains Included in net investment income (314 ) (106 ) 16 (404 ) Included in other income (loss) — — (348 ) (348 ) Total realized gains Included in other income (loss) — — 1,512 1,512 Total foreign exchange gains (losses) — 654 (6 ) 648 Purchases — 5,137 1,544 6,681 Settlements (7,500 ) (23,116 ) — (30,616 ) Balance - June 30, 2015 $ 7,660 $ 275,695 $ 75,687 $ 359,042 Change in unrealized gains for the period included in earnings for assets held at the end of the period included in net investment income $ (132 ) $ (106 ) $ 16 $ (404 ) Change in unrealized gains for the period included in earnings for assets held at the end of the period included in other income (loss) $ — $ — $ (348 ) $ (348 ) Fair Value Measurements Using Significant Unobservable Inputs (Level 3) Fixed maturity investments trading Other investments Other assets and (liabilities) Total Balance - January 1, 2015 $ 15,660 $ 303,818 $ (8,934 ) $ 310,544 Total unrealized (losses) gains Included in net investment income (500 ) 4,908 176 4,584 Included in other income (loss) — — (348 ) (348 ) Total realized gains Included in other income (loss) — — 2,828 2,828 Total foreign exchange losses — (1,844 ) — (1,844 ) Purchases — 10,875 81,965 92,840 Settlements (7,500 ) (42,062 ) — (49,562 ) Balance - June 30, 2015 $ 7,660 $ 275,695 $ 75,687 $ 359,042 Change in unrealized gains for the period included in earnings for assets held at the end of the period included in net investment income $ (318 ) $ 4,908 $ 176 $ 4,584 Change in unrealized gains for the period included in earnings for assets held at the end of the period included in other income (loss) $ — $ — $ (348 ) $ (348 ) Fair Value Measurements Using Significant Unobservable Inputs (Level 3) Fixed maturity investments trading Other investments Other assets and (liabilities) Total Balance - April 1, 2014 $ 37,138 $ 342,778 $ (1,307 ) $ 378,609 Total unrealized gains Included in net investment income 9,038 1,579 179 10,796 Included in other income (loss) — — 2,220 2,220 Total foreign exchange losses — (205 ) (21 ) (226 ) Purchases — 10,391 — 10,391 Settlements — (20,394 ) — (20,394 ) Balance - June 30, 2014 $ 46,176 $ 334,149 $ 1,071 $ 381,396 Change in unrealized gains for the period included in earnings for assets held at the end of the period included in net investment income $ 9,038 $ 1,579 $ — $ 10,617 Change in unrealized gains for the period included in earnings for assets held at the end of the period included in other income (loss) $ — $ — $ 2,220 $ 2,220 Fair Value Measurements Using Significant Unobservable Inputs (Level 3) Fixed maturity investments trading Other investments Other assets and (liabilities) Total Balance - January 1, 2014 $ 27,580 $ 344,248 $ (2,490 ) $ 369,338 Total unrealized gains Included in net investment income 18,596 9,455 1,395 29,446 Included in other income (loss) — — 2,220 2,220 Total foreign exchange losses — (199 ) (54 ) (253 ) Purchases — 25,392 — 25,392 Settlements — (44,747 ) — (44,747 ) Balance - June 30, 2014 $ 46,176 $ 334,149 $ 1,071 $ 381,396 Change in unrealized gains for the period included in earnings for assets held at the end of the period included in net investment income $ 18,596 $ 9,455 $ 1,395 $ 29,446 Change in unrealized gains for the period included in earnings for assets held at the end of the period included in other income (loss) $ — $ — $ 2,220 $ 2,220
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: June 30, December 31, Other investments $ 504,693 $ 504,147 Other assets $ 88,086 $ 5,664 Other liabilities $ 12,385 $ 14,408
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: At June 30, 2015 Fair Value Unfunded Redemption Frequency Redemption Redemption Private equity partnerships $ 250,796 $ 182,880 See below See below See below Senior secured bank loan fund 22,561 3,182 See below See below See below Hedge funds 2,338 — See below See below See below Total other investments measured using net asset valuations $ 275,695 $ 186,062

Reinsurance (Tables)

Reinsurance (Tables)	6 Months Ended
	Jun. 30, 2015
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 Six months ended June 30, 2015 June 30, 2014 June 30, 2015 June 30, 2014 Premiums written Direct $ 34,340 $ 19,707 $ 65,153 $ 33,562 Assumed 627,657 491,833 1,240,422 1,183,238 Ceded (153,320 ) (165,133 ) (392,863 ) (420,046 ) Net premiums written $ 508,677 $ 346,407 $ 912,712 $ 796,754 Premiums earned Direct $ 21,606 $ 14,949 $ 44,507 $ 29,178 Assumed 468,372 350,389 850,975 735,987 Ceded (110,150 ) (104,922 ) (218,894 ) (218,215 ) Net premiums earned $ 379,828 $ 260,416 $ 676,588 $ 546,950 Claims and claim expenses Gross claims and claim expenses incurred $ 222,819 $ 97,064 $ 311,814 $ 165,214 Claims and claim expenses recovered (53,475 ) (15,676 ) (65,617 ) (24,911 ) Net claims and claim expenses incurred $ 169,344 $ 81,388 $ 246,197 $ 140,303

Debt and Credit Facilities (Tab

Debt and Credit Facilities (Tables)	6 Months Ended
	Jun. 30, 2015
Debt Disclosure [Abstract]
Schedule Debt Obligations	A summary of the Company’s debt obligations on its consolidated balance sheets is set forth below: June 30, 2015 December 31, 2014 Fair Value Carrying Value Fair Value Carrying Value 3.700% Senior Notes due 2025 $ 290,025 $ 299,415 $ — $ — 5.75% Senior Notes due 2020 275,000 249,578 279,000 249,522 Series B 7.50% Senior Notes due 2017 274,063 274,618 — — 4.750% Senior Notes due 2025 (DaVinciRe) 145,688 148,751 — — $ 984,776 $ 972,362 $ 279,000 $ 249,522
Schedule of Credit Facilities	A summary of the Company’s credit facilities is set forth below: At June 30, 2015 Issued or Drawn RenaissanceRe Revolving Credit Facility $ — Uncommitted Standby Letter of Credit Facility with Wells Fargo 160,342 Uncommitted Standby Letter of Credit Facility with NAB — Bilateral Letter of Credit Facility with Citibank Europe 143,778 Funds at Lloyd’s Letter of Credit Facilities with Citibank Europe Renaissance Reinsurance 300,000 RenaissanceRe Specialty Risks 9,129 Total credit facilities in U.S. dollars $ 613,249 Funds at Lloyd’s Letter of Credit Facilities Renaissance Reinsurance Master Reimbursement Agreement £ 70,000 Total credit facilities in pound sterling £ 70,000

Noncontrolling Interests (Table

Noncontrolling Interests (Tables)	6 Months Ended
	Jun. 30, 2015
Noncontrolling Interest [Line Items]
Schedule of Activity in Noncontrolling Interest	A summary of the Company’s noncontrolling interests on its consolidated balance sheets is set forth below: June 30, December 31, 2014 Redeemable noncontrolling interest - DaVinciRe $ 879,266 $ 1,037,306 Redeemable noncontrolling interest - Medici 109,546 94,402 Redeemable noncontrolling interest $ 988,812 $ 1,131,708 A summary of the Company’s noncontrolling interests on its consolidated statements of operations set forth below: Three months ended Six months ended June 30, June 30, June 30, June 30, Redeemable noncontrolling interest - DaVinciRe $ 12,345 $ 35,706 $ 50,671 $ 76,886 Redeemable noncontrolling interest - Medici (178 ) 372 1,158 1,960 Net income attributable to noncontrolling interests $ 12,167 $ 36,078 $ 51,829 $ 78,846
Schedule Of Redeemable Noncontrolling Interest	The activity in redeemable noncontrolling interest – DaVinciRe is detailed in the table below: Three months ended Six months ended June 30, June 30, June 30, June 30, Beginning balance $ 867,734 $ 895,391 $ 1,037,306 $ 1,063,368 Redemption of shares from redeemable noncontrolling interest (813 ) (866 ) (208,711 ) (219,745 ) Sale of shares to redeemable noncontrolling interests — — — 9,722 Net income attributable to redeemable noncontrolling interest 12,345 35,706 50,671 76,886 Ending balance $ 879,266 $ 930,231 $ 879,266 $ 930,231
Medici
Noncontrolling Interest [Line Items]
Schedule Of Noncontrolling Interest	The activity in redeemable noncontrolling interest – Medici is detailed in the table below: Three months ended Six months ended June 30, June 30, June 30, June 30, Beginning balance $ 100,697 $ 91,590 $ 94,402 $ 36,492 Redemption of shares from redeemable noncontrolling interest (2,423 ) — (17,107 ) (1,875 ) Sale of shares to redeemable noncontrolling interests 11,450 1,699 31,093 57,084 Net income attributable to redeemable noncontrolling interest (178 ) 372 1,158 1,960 Ending balance $ 109,546 $ 93,661 $ 109,546 $ 93,661

Earnings Per Share (Tables)

Earnings Per Share (Tables)	6 Months Ended
	Jun. 30, 2015
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 Six months ended (thousands of shares) June 30, June 30, June 30, June 30, Numerator: Net income available to RenaissanceRe common shareholders $ 73,233 $ 120,752 $ 241,076 $ 271,755 Amount allocated to participating common shareholders (1) (819 ) (1,557 ) (2,781 ) (3,577 ) Net income allocated to RenaissanceRe common shareholders $ 72,414 $ 119,195 $ 238,295 $ 268,178 Denominator: Denominator for basic income per RenaissanceRe common share - weighted average common shares 45,303 39,736 42,467 40,487 Per common share equivalents of employee stock options and restricted shares 354 659 372 662 Denominator for diluted income per RenaissanceRe common share - adjusted weighted average common shares and assumed conversions 45,657 40,395 42,839 41,149 Net income available to RenaissanceRe common shareholders per common share – basic $ 1.60 $ 3.00 $ 5.61 $ 6.62 Net income available to RenaissanceRe common shareholders per common share – diluted $ 1.59 $ 2.95 $ 5.56 $ 6.52 (1) Represents earnings attributable to holders of unvested restricted shares issued under the Company’s 2001 Stock Incentive Plan and Non-Employee Director Stock Incentive Plan.

Segment Reporting (Tables)

Segment Reporting (Tables)	6 Months Ended
	Jun. 30, 2015
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 June 30, 2015 Catastrophe Reinsurance Specialty Reinsurance Lloyd’s Other Total Gross premiums written $ 385,366 $ 160,013 $ 116,618 $ — $ 661,997 Net premiums written $ 270,490 $ 139,867 $ 98,320 $ — $ 508,677 Net premiums earned $ 162,705 $ 155,584 $ 61,539 $ — $ 379,828 Net claims and claim expenses incurred 55,376 86,062 27,683 223 169,344 Acquisition expenses 19,314 28,251 14,210 (109 ) 61,666 Operational expenses 22,090 18,747 13,719 117 54,673 Underwriting income (loss) $ 65,925 $ 22,524 $ 5,927 $ (231 ) 94,145 Net investment income 38,604 38,604 Net foreign exchange losses (1,740 ) (1,740 ) Equity in earnings of other ventures 6,160 6,160 Other income 1,427 1,427 Net realized and unrealized losses on investments (26,712 ) (26,712 ) Corporate expenses (13,032 ) (13,032 ) Interest expense (9,698 ) (9,698 ) Income before taxes and noncontrolling interests 89,154 Income tax expense 1,842 1,842 Net income attributable to noncontrolling interests (12,167 ) (12,167 ) Dividends on preference shares (5,596 ) (5,596 ) Net income available to RenaissanceRe common shareholders $ 73,233 Net claims and claim expenses incurred – current accident year $ 67,334 $ 104,315 $ 30,771 $ — $ 202,420 Net claims and claim expenses incurred – prior accident years (11,958 ) (18,253 ) (3,088 ) 223 (33,076 ) Net claims and claim expenses incurred – total $ 55,376 $ 86,062 $ 27,683 $ 223 $ 169,344 Net claims and claim expense ratio – current accident year 41.4 % 67.0 % 50.0 % — % 53.3 % Net claims and claim expense ratio – prior accident years (7.4 )% (11.7 )% (5.0 )% — % (8.7 )% Net claims and claim expense ratio – calendar year 34.0 % 55.3 % 45.0 % — % 44.6 % Underwriting expense ratio 25.5 % 30.2 % 45.4 % — % 30.6 % Combined ratio 59.5 % 85.5 % 90.4 % — % 75.2 % Six months ended June 30, 2015 Catastrophe Reinsurance Specialty Reinsurance Lloyd’s Other Total Gross premiums written (1) $ 774,613 $ 284,304 $ 246,748 $ (90 ) $ 1,305,575 Net premiums written $ 493,130 $ 243,782 $ 175,889 $ (89 ) $ 912,712 Net premiums earned $ 306,472 $ 250,460 $ 119,745 $ (89 ) $ 676,588 Net claims and claim expenses incurred 62,970 125,650 57,526 51 246,197 Acquisition expenses 26,968 48,940 28,903 256 105,067 Operational expenses 42,453 32,037 25,659 145 100,294 Underwriting income (loss) $ 174,081 $ 43,833 $ 7,657 $ (541 ) 225,030 Net investment income 78,311 78,311 Net foreign exchange losses (4,870 ) (4,870 ) Equity in earnings of other ventures 11,455 11,455 Other income 2,966 2,966 Net realized and unrealized gains on investments 15,037 15,037 Corporate expenses (58,630 ) (58,630 ) Interest expense (14,949 ) (14,949 ) Income before taxes and noncontrolling interests 254,350 Income tax benefit 49,746 49,746 Net income attributable to noncontrolling interests (51,829 ) (51,829 ) Dividends on preference shares (11,191 ) (11,191 ) Net income available to RenaissanceRe common shareholders $ 241,076 Net claims and claim expenses incurred – current accident year $ 91,458 $ 153,579 $ 56,381 $ — $ 301,418 Net claims and claim expenses incurred – prior accident years (28,488 ) (27,929 ) 1,145 51 (55,221 ) Net claims and claim expenses incurred – total $ 62,970 $ 125,650 $ 57,526 $ 51 $ 246,197 Net claims and claim expense ratio – current accident year 29.8 % 61.3 % 47.1 % — % 44.5 % Net claims and claim expense ratio – prior accident years (9.3 )% (11.1 )% 0.9 % (57.3 )% (8.1 )% Net claims and claim expense ratio – calendar year 20.5 % 50.2 % 48.0 % (57.3 )% 36.4 % Underwriting expense ratio 22.7 % 32.3 % 45.6 % (450.6 )% 30.3 % Combined ratio 43.2 % 82.5 % 93.6 % (507.9 )% 66.7 % (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 six months ended June 30, 2015 . Three months ended June 30, 2014 Catastrophe Reinsurance Specialty Reinsurance Lloyd’s Other Total Gross premiums written $ 388,083 $ 51,554 $ 71,903 $ — $ 511,540 Net premiums written $ 233,698 $ 46,254 $ 66,452 $ 3 $ 346,407 Net premiums earned $ 159,152 $ 53,588 $ 47,672 $ 4 $ 260,416 Net claims and claim expenses incurred 36,730 20,075 25,111 (528 ) 81,388 Acquisition expenses 17,806 11,699 10,122 (6,150 ) 33,477 Operational expenses 22,200 10,514 13,058 69 45,841 Underwriting income (loss) $ 82,416 $ 11,300 $ (619 ) $ 6,613 99,710 Net investment income 34,541 34,541 Net foreign exchange gains 2,392 2,392 Equity in earnings of other ventures 7,232 7,232 Other loss (535 ) (535 ) Net realized and unrealized gains on investments 27,128 27,128 Corporate expenses (3,954 ) (3,954 ) Interest expense (4,292 ) (4,292 ) Income before taxes and noncontrolling interests 162,222 Income tax benefit 204 204 Net income attributable to noncontrolling interests (36,078 ) (36,078 ) Dividends on preference shares (5,596 ) (5,596 ) Net income available to RenaissanceRe common shareholders $ 120,752 Net claims and claim expenses incurred – current accident year $ 38,473 $ 25,443 $ 34,555 $ — $ 98,471 Net claims and claim expenses incurred – prior accident years (1,743 ) (5,368 ) (9,444 ) (528 ) (17,083 ) Net claims and claim expenses incurred – total $ 36,730 $ 20,075 $ 25,111 $ (528 ) $ 81,388 Net claims and claim expense ratio – current accident year 24.2 % 47.5 % 72.5 % — % 37.8 % Net claims and claim expense ratio – prior accident years (1.1 )% (10.0 )% (19.8 )% (13,200.0 )% (6.5 )% Net claims and claim expense ratio – calendar year 23.1 % 37.5 % 52.7 % (13,200.0 )% 31.3 % Underwriting expense ratio 25.1 % 41.4 % 48.6 % (152,025.0 )% 30.4 % Combined ratio 48.2 % 78.9 % 101.3 % (165,225.0 )% 61.7 % Six months ended June 30, 2014 Catastrophe Reinsurance Specialty Reinsurance Lloyd’s Other Total Gross premiums written $ 855,794 $ 205,844 $ 155,162 $ — $ 1,216,800 Net premiums written $ 493,187 $ 171,743 $ 131,821 $ 3 $ 796,754 Net premiums earned $ 323,736 $ 123,218 $ 99,969 $ 27 $ 546,950 Net claims and claim expenses incurred 43,185 46,156 51,392 (430 ) 140,303 Acquisition expenses 24,932 28,246 20,689 (6,690 ) 67,177 Operational expenses 42,619 20,620 25,091 135 88,465 Underwriting income $ 213,000 $ 28,196 $ 2,797 $ 7,012 251,005 Net investment income 73,489 73,489 Net foreign exchange gains 1,331 1,331 Equity in earnings of other ventures 11,431 11,431 Other loss (473 ) (473 ) Net realized and unrealized gains on investments 42,055 42,055 Corporate expenses (8,499 ) (8,499 ) Interest expense (8,585 ) (8,585 ) Income before taxes and noncontrolling interests 361,754 Income tax benefit 38 38 Net income attributable to noncontrolling interests (78,846 ) (78,846 ) Dividends on preference shares (11,191 ) (11,191 ) Net income available to RenaissanceRe common shareholders $ 271,755 Net claims and claim expenses incurred – current accident year $ 51,002 $ 67,365 $ 55,712 $ — $ 174,079 Net claims and claim expenses incurred – prior accident years (7,817 ) (21,209 ) (4,320 ) (430 ) (33,776 ) Net claims and claim expenses incurred – total $ 43,185 $ 46,156 $ 51,392 $ (430 ) $ 140,303 Net claims and claim expense ratio – current accident year 15.8 % 54.7 % 55.7 % — % 31.8 % Net claims and claim expense ratio – prior accident years (2.5 )% (17.2 )% (4.3 )% (1,592.6 )% (6.1 )% Net claims and claim expense ratio – calendar year 13.3 % 37.5 % 51.4 % (1,592.6 )% 25.7 % Underwriting expense ratio 20.9 % 39.6 % 45.8 % (24,277.8 )% 28.4 % Combined ratio 34.2 % 77.1 % 97.2 % (25,870.4 )% 54.1 %

Derivative Instruments (Tables)

Derivative Instruments (Tables)	6 Months Ended
	Jun. 30, 2015
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 June 30, 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 $ 849 743 $ 106 Other assets $ — $ 106 Foreign currency forward contracts (1) 1,153 133 1,020 Other assets — 1,020 Foreign currency forward contracts (2) 803 157 646 Other assets — 646 Credit default swaps 274 135 139 Other assets 60 79 Total $ 3,079 $ 1,168 $ 1,911 $ 60 $ 1,851 Derivative Liabilities At June 30, 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 $ 872 743 $ 129 Other liabilities $ 129 $ — Foreign currency forward contracts (1) 6,589 1,017 5,572 Other liabilities — 5,572 Foreign currency forward contracts (2) 320 157 163 Other liabilities — 163 Credit default swaps 250 135 115 Other liabilities — 115 Weather contract 14 — 14 Other liabilities 14 — Total $ 8,045 $ 2,052 $ 5,993 $ 143 $ 5,850 (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, 2014 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 $ 468 468 $ — Other assets $ — $ — Foreign currency forward contracts (1) 5,740 1,737 4,003 Other assets — 4,003 Foreign currency forward contracts (2) 3,959 648 3,311 Other assets — 3,311 Credit default swaps 468 88 380 Other assets 310 70 Total $ 10,635 $ 2,941 $ 7,694 $ 310 $ 7,384 Derivative Liabilities At December 31, 2014 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 $ 1,037 468 $ 569 Other liabilities $ 569 $ — Foreign currency forward contracts (1) 1,319 967 352 Other liabilities — 352 Foreign currency forward contracts (2) 724 649 75 Other liabilities — 75 Credit default swaps 251 88 163 Other liabilities — 163 Weather contract 190 — 190 Other liabilities 190 — Total $ 3,521 $ 2,172 $ 1,349 $ 759 $ 590 (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 June 30, 2015 2014 Interest rate futures Net realized and unrealized (losses) gains on investments $ 19,784 $ (7,362 ) Foreign currency forward contracts (1) Net foreign exchange (losses) gains (10,210 ) (1,990 ) Foreign currency forward contracts (2) Net foreign exchange (losses) gains (3,417 ) 58 Credit default swaps Net realized and unrealized (losses) gains on investments 22 299 Weather contract Net realized and unrealized (losses) gains on investments 10 179 Call rights Other income (loss) — 2,220 Total $ 6,189 $ (6,596 ) Location of gain (loss) recognized on derivatives Amount of gain (loss) recognized on derivatives Six months ended June 30, 2015 2014 Interest rate futures Net realized and unrealized (losses) gains on investments $ 15,376 $ (19,636 ) Foreign currency forward contracts (1) Net foreign exchange (losses) gains (6,599 ) 2,109 Foreign currency forward contracts (2) Net foreign exchange (losses) gains 5,793 (1,341 ) Credit default swaps Net realized and unrealized (losses) gains on investments 62 458 Weather contract Net realized and unrealized (losses) gains on investments 170 1,395 Call rights Other income (loss) — 2,220 Total $ 14,802 $ (14,795 ) (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 Finan34

Condensed Consolidating Financial Information Provided In Connection With Outstanding Debt Of Subsidiaries (Tables)	6 Months Ended
	Jun. 30, 2015
Condensed Consolidating Financial Information Provided In Connection With Outstanding Debt Of Subsidiaries [Abstract]
Condensed Consolidating Balance Sheets	Condensed Consolidating Balance Sheet at June 30, 2015 RenaissanceRe Platinum Underwriters Holdings, Ltd. (Subsidiary Guarantor) RenRe North Platinum Underwriters Finance, Inc. (Subsidiary Issuer) RenaissanceRe Finance, Inc. (Subsidiary Issuer) Other Consolidating RenaissanceRe Assets Total investments $ 182,375 $ — $ 88,177 $ 282,027 $ — $ 8,727,688 $ — $ 9,280,267 Cash and cash equivalents 2,535 9,181 2,146 1,089 224 382,915 — 398,090 Investments in subsidiaries 4,550,601 648,991 258,980 611,580 828,023 — (6,898,175 ) — Due from subsidiaries and affiliates 79,807 27,612 15 — — — (107,434 ) — Premiums receivable — — — — — 1,068,819 — 1,068,819 Prepaid reinsurance premiums — — — — — 276,231 — 276,231 Reinsurance recoverable — — — — — 136,464 — 136,464 Accrued investment income 462 — 173 307 — 36,538 — 37,480 Deferred acquisition costs — — — — — 195,291 (21,883 ) 173,408 Receivable for investments sold 56 — 21 151 — 148,835 — 149,063 Other assets 20,921 — 32,250 3,125 121,323 198,964 (118,962 ) 257,621 Goodwill and other intangible assets 267,945 — — — — 7,798 — 275,743 Total assets $ 5,104,702 $ 685,784 $ 381,762 $ 898,279 $ 949,570 $ 11,179,543 $ (7,146,454 ) $ 12,053,186 Liabilities, Noncontrolling Interests and Shareholders’ Equity Liabilities Reserve for claims and claim expenses $ — $ — $ — $ — $ — $ 2,828,161 $ 19,487 $ 2,847,648 Unearned premiums — — — — — 1,155,596 — 1,155,596 Debt 117,000 — 249,568 250,000 299,415 148,761 (92,382 ) 972,362 Amounts due to subsidiaries and affiliates 60,202 1,872 218 23 407 — (62,722 ) — Reinsurance balances payable — — — — — 512,019 — 512,019 Payable for investments purchased 2,979 — 38 233 — 508,001 — 511,251 Other liabilities 87,577 336 2,380 — 3,357 202,854 (67,950 ) 228,554 Total liabilities 267,758 2,208 252,204 250,256 303,179 5,355,392 (203,567 ) 6,227,430 Redeemable noncontrolling interest — — — — — 988,812 — 988,812 Shareholders’ Equity Total shareholders’ equity 4,836,944 683,576 129,558 648,023 646,391 4,835,339 (6,942,887 ) 4,836,944 Total liabilities, noncontrolling interests and shareholders’ equity $ 5,104,702 $ 685,784 $ 381,762 $ 898,279 $ 949,570 $ 11,179,543 $ (7,146,454 ) $ 12,053,186 (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, 2014 RenaissanceRe Holdings Ltd. (Parent Guarantor) RenRe North America Holdings Inc. (Subsidiary Issuer) Other RenaissanceRe Holdings Ltd. Subsidiaries and Eliminations (Non-guarantor Subsidiaries) (1) Consolidating Adjustments (2) RenaissanceRe Consolidated Assets Total investments $ 137,006 $ 88,150 $ 6,518,594 $ — $ 6,743,750 Cash and cash equivalents 5,986 1,033 518,565 — 525,584 Investments in subsidiaries 3,509,974 71,796 — (3,581,770 ) — Due from subsidiaries and affiliates 126,548 23 — (126,571 ) — Premiums receivable — — 440,007 — 440,007 Prepaid reinsurance premiums — — 94,810 — 94,810 Reinsurance recoverable — — 66,694 — 66,694 Accrued investment income — 121 26,388 — 26,509 Deferred acquisition costs — — 110,059 — 110,059 Receivable for investments sold 10 — 52,380 — 52,390 Other assets 112,400 1,242 123,661 (101,458 ) 135,845 Goodwill and other intangible assets — — 7,902 — 7,902 Total assets $ 3,891,924 $ 162,365 $ 7,959,060 $ (3,809,799 ) $ 8,203,550 Liabilities, Redeemable Noncontrolling Interest and Shareholders’ Equity Liabilities Reserve for claims and claim expenses $ — $ — $ 1,412,510 $ — $ 1,412,510 Unearned premiums — — 512,386 — 512,386 Debt — 249,522 — — 249,522 Amounts due to subsidiaries and affiliates 6,000 233 — (6,233 ) — Reinsurance balances payable — — 454,580 — 454,580 Payable for investments purchased — — 203,021 — 203,021 Other liabilities 20,209 4,013 351,344 (1,458 ) 374,108 Total liabilities 26,209 253,768 2,933,841 (7,691 ) 3,206,127 Redeemable noncontrolling interest — — 1,131,708 — 1,131,708 Shareholders’ Equity Total shareholders’ equity 3,865,715 (91,403 ) 3,893,511 (3,802,108 ) 3,865,715 Total liabilities, redeemable noncontrolling interest and shareholders’ equity $ 3,891,924 $ 162,365 $ 7,959,060 $ (3,809,799 ) $ 8,203,550 (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 Platinum Underwriters Holdings, Ltd. (Subsidiary Guarantor) RenRe North Platinum Underwriters Finance, Inc. (Subsidiary Issuer) RenaissanceRe Finance, Inc. (Subsidiary Issuer) Other Consolidating RenaissanceRe Revenues Net premiums earned $ — $ — $ — $ — $ — $ 676,588 $ — $ 676,588 Net investment income 2,722 — 631 1,181 504 75,072 (1,799 ) 78,311 Net foreign exchange gains (losses) 2 — — — — (4,872 ) — (4,870 ) Equity in earnings of other ventures — — — — — 11,455 — 11,455 Other income 21,881 663 — — — 1,639 (21,217 ) 2,966 Net realized and unrealized (losses) gains on investments (496 ) — 1,015 (1,388 ) — 15,906 — 15,037 Total revenues 24,109 663 1,646 (207 ) 504 775,788 (23,016 ) 779,487 Expenses Net claims and claim expenses incurred — — — — — 248,435 (2,238 ) 246,197 Acquisition expenses — — — — — 121,855 (16,788 ) 105,067 Operational expenses (2,478 ) 5,919 3,478 1 — 85,849 7,525 100,294 Corporate expenses 22,677 9,162 251 144 84 26,456 (144 ) 58,630 Interest expense 763 — 7,233 6,250 3,006 1,474 (3,777 ) 14,949 Total expenses 20,962 15,081 10,962 6,395 3,090 484,069 (15,422 ) 525,137 Income (loss) before equity in net income (loss) of subsidiaries and taxes 3,147 (14,418 ) (9,316 ) (6,602 ) (2,586 ) 291,719 (7,594 ) 254,350 Equity in net income (loss) of subsidiaries 256,235 (7,362 ) 17,526 (1,581 ) (5,656 ) — (259,162 ) — Income (loss) before taxes 259,382 (21,780 ) 8,210 (8,183 ) (8,242 ) 291,719 (266,756 ) 254,350 Income tax (expense) benefit (7,115 ) — 32,748 2,527 953 20,633 — 49,746 Net income (loss) 252,267 (21,780 ) 40,958 (5,656 ) (7,289 ) 312,352 (266,756 ) 304,096 Net income attributable to noncontrolling interests — — — — — (51,829 ) — (51,829 ) Net income (loss) attributable to RenaissanceRe 252,267 (21,780 ) 40,958 (5,656 ) (7,289 ) 260,523 (266,756 ) 252,267 Dividends on preference shares (11,191 ) — — — — — — (11,191 ) Net income (loss) attributable to RenaissanceRe common shareholders $ 241,076 $ (21,780 ) $ 40,958 $ (5,656 ) $ (7,289 ) $ 260,523 $ (266,756 ) $ 241,076 (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 Platinum Underwriters Holdings, Ltd. (Subsidiary Guarantor) RenRe North Platinum Underwriters Finance, Inc. (Subsidiary Issuer) RenaissanceRe Finance, Inc. (Subsidiary Issuer) Other Consolidating RenaissanceRe Revenues Net premiums earned $ — $ — $ — $ — $ — $ 379,828 $ — $ 379,828 Net investment income 98 — 300 1,221 468 37,342 (825 ) 38,604 Net foreign exchange gains (losses) 12 — — — — (1,752 ) — (1,740 ) Equity in earnings of other ventures — — — — — 6,160 — 6,160 Other income 15,692 497 — — — 431 (15,193 ) 1,427 Net realized and unrealized (losses) gains on investments (535 ) — 609 (1,389 ) — (25,397 ) — (26,712 ) Total revenues 15,267 497 909 (168 ) 468 396,612 (16,018 ) 397,567 Expenses Net claims and claim expenses incurred — — — — — 171,023 (1,679 ) 169,344 Acquisition expenses — — — — — 73,537 (11,871 ) 61,666 Operational expenses (1,300 ) 932 1,588 — — 51,334 2,119 54,673 Corporate expenses 6,373 980 153 109 77 5,449 (109 ) 13,032 Interest expense 468 — 3,616 4,687 2,790 880 (2,743 ) 9,698 Total expenses 5,541 1,912 5,357 4,796 2,867 302,223 (14,283 ) 308,413 Income (loss) before equity in net income (loss) of subsidiaries and taxes 9,726 (1,415 ) (4,448 ) (4,964 ) (2,399 ) 94,389 (1,735 ) 89,154 Equity in net income (loss) of subsidiaries 72,555 (805 ) 127 565 (2,443 ) (11,916 ) (58,083 ) — Income (loss) before taxes 82,281 (2,220 ) (4,321 ) (4,399 ) (4,842 ) 82,473 (59,818 ) 89,154 Income tax (expense) benefit (3,452 ) — 1,743 1,956 888 707 — 1,842 Net income (loss) 78,829 (2,220 ) (2,578 ) (2,443 ) (3,954 ) 83,180 (59,818 ) 90,996 Net income attributable to noncontrolling interests — — — — — (12,167 ) — (12,167 ) Net income (loss) attributable to RenaissanceRe 78,829 (2,220 ) (2,578 ) (2,443 ) (3,954 ) 71,013 (59,818 ) 78,829 Dividends on preference shares (5,596 ) — — — — — — (5,596 ) Net income (loss) attributable to RenaissanceRe common shareholders $ 73,233 $ (2,220 ) $ (2,578 ) $ (2,443 ) $ (3,954 ) $ 71,013 $ (59,818 ) $ 73,233 (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 RenaissanceRe Holdings Ltd. (Parent Guarantor) RenRe North America Holdings Inc. (Subsidiary Issuer) Other RenaissanceRe Holdings Ltd. Subsidiaries and Eliminations (Non-guarantor Subsidiaries) (1) Consolidating Adjustments (2) RenaissanceRe Consolidated Revenues Net premiums earned $ — $ — $ 546,950 $ — $ 546,950 Net investment income 1,361 919 73,079 (1,870 ) 73,489 Net foreign exchange gains 7 — 1,324 — 1,331 Equity in earnings of other ventures — — 11,431 — 11,431 Other loss — (8 ) (465 ) — (473 ) Net realized and unrealized gains on investments 84 4,717 37,254 — 42,055 Total revenues 1,452 5,628 669,573 (1,870 ) 674,783 Expenses Net claims and claim expenses incurred — — 140,303 — 140,303 Acquisition expenses — — 67,177 — 67,177 Operational expenses (2,116 ) 3,578 87,171 (168 ) 88,465 Corporate expenses 7,470 118 911 — 8,499 Interest expense — 7,233 1,352 — 8,585 Total expenses 5,354 10,929 296,914 (168 ) 313,029 (Loss) income before equity in net income of subsidiaries and taxes (3,902 ) (5,301 ) 372,659 (1,702 ) 361,754 Equity in net income of subsidiaries 286,848 815 — (287,663 ) — Income (loss) before taxes 282,946 (4,486 ) 372,659 (289,365 ) 361,754 Income tax benefit (expense) — 646 (608 ) — 38 Net income (loss) 282,946 (3,840 ) 372,051 (289,365 ) 361,792 Net income attributable to noncontrolling interests — — (78,846 ) — (78,846 ) Net income (loss) attributable to RenaissanceRe 282,946 (3,840 ) 293,205 (289,365 ) 282,946 Dividends on preference shares (11,191 ) — — — (11,191 ) Net income (loss) available (attributable) to RenaissanceRe common shareholders $ 271,755 $ (3,840 ) $ 293,205 $ (289,365 ) $ 271,755 (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 RenaissanceRe Holdings Ltd. (Parent Guarantor) RenRe North America Holdings Inc. (Subsidiary Issuer) Other RenaissanceRe Holdings Ltd. Subsidiaries and Eliminations (Non-guarantor Subsidiaries) (1) Consolidating Adjustments (2) RenaissanceRe Consolidated Revenues Net premiums earned $ — $ — $ 260,416 $ — $ 260,416 Net investment income 736 445 34,293 (933 ) 34,541 Net foreign exchange gains 6 — 2,386 — 2,392 Equity in earnings of other ventures — — 7,232 — 7,232 Other loss — — (535 ) — (535 ) Net realized and unrealized gains on investments 190 4,340 22,598 — 27,128 Total revenues 932 4,785 326,390 (933 ) 331,174 Expenses Net claims and claim expenses incurred — — 81,388 — 81,388 Acquisition expenses — — 33,477 — 33,477 Operational expenses (1,236 ) 1,684 45,483 (90 ) 45,841 Corporate expenses 3,468 59 427 — 3,954 Interest expense — 3,616 676 — 4,292 Total expenses 2,232 5,359 161,451 (90 ) 168,952 (Loss) income before equity in net income (loss) of subsidiaries and taxes (1,300 ) (574 ) 164,939 (843 ) 162,222 Equity in net income (loss) of subsidiaries 127,648 (38 ) — (127,610 ) — Income (loss) before taxes 126,348 (612 ) 164,939 (128,453 ) 162,222 Income tax (expense) benefit — (38 ) 242 — 204 Net income (loss) 126,348 (650 ) 165,181 (128,453 ) 162,426 Net income attributable to noncontrolling interests — — (36,078 ) — (36,078 ) Net income (loss) attributable to RenaissanceRe 126,348 (650 ) 129,103 (128,453 ) 126,348 Dividends on preference shares (5,596 ) — — — (5,596 ) Net income (loss) available (attributable) to RenaissanceRe common shareholders $ 120,752 $ (650 ) $ 129,103 $ (128,453 ) $ 120,752 (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)	Condensed Consolidating Statement of Comprehensive Income (Loss) for the six months ended June 30, 2014 RenaissanceRe Holdings Ltd. (Parent Guarantor) RenRe North America Holdings Inc. (Subsidiary Issuer) Other RenaissanceRe Holdings Ltd. Subsidiaries and Eliminations (Non-guarantor Subsidiaries) (1) Consolidating Adjustments (2) RenaissanceRe Consolidated Comprehensive income (loss) Net income (loss) $ 282,946 $ (3,840 ) $ 372,051 $ (289,365 ) $ 361,792 Change in net unrealized gains on investments — — (213 ) — (213 ) Comprehensive income (loss) 282,946 (3,840 ) 371,838 (289,365 ) 361,579 Net income attributable to noncontrolling interests — — (78,846 ) — (78,846 ) Comprehensive income attributable to noncontrolling interests — — (78,846 ) — (78,846 ) Comprehensive income (loss) attributable to RenaissanceRe $ 282,946 $ (3,840 ) $ 292,992 $ (289,365 ) $ 282,733 (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 six months ended June 30, 2015 RenaissanceRe Platinum Underwriters Holdings, Ltd. (Subsidiary Guarantor) RenRe North Platinum Underwriters Finance, Inc. (Subsidiary Issuer) RenaissanceRe Finance, Inc. (Subsidiary Issuer) Other Consolidating RenaissanceRe Comprehensive income (loss) Net income (loss) $ 252,267 $ (21,780 ) $ 40,958 $ (5,656 ) $ (7,289 ) $ 312,352 $ (266,756 ) $ 304,096 Change in net unrealized gains on investments — — — — — (423 ) — (423 ) Comprehensive income (loss) 252,267 (21,780 ) 40,958 (5,656 ) (7,289 ) 311,929 (266,756 ) 303,673 Net income attributable to noncontrolling interests — — — — — (51,829 ) — (51,829 ) Comprehensive income attributable to noncontrolling interests — — — — — (51,829 ) — (51,829 ) Comprehensive income (loss) attributable to RenaissanceRe $ 252,267 $ (21,780 ) $ 40,958 $ (5,656 ) $ (7,289 ) $ 260,100 $ (266,756 ) $ 251,844 (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) for the three months ended June 30, 2014 RenaissanceRe Holdings Ltd. (Parent Guarantor) RenRe North America Holdings Inc. (Subsidiary Issuer) Other RenaissanceRe Holdings Ltd. Subsidiaries and Eliminations (Non-guarantor Subsidiaries) (1) Consolidating Adjustments (2) RenaissanceRe Consolidated Comprehensive income (loss) Net income (loss) $ 126,348 $ (650 ) $ 165,181 $ (128,453 ) $ 162,426 Change in net unrealized gains on investments — — (45 ) — (45 ) Comprehensive income (loss) 126,348 (650 ) 165,136 (128,453 ) 162,381 Net income attributable to noncontrolling interests — — (36,078 ) — (36,078 ) Comprehensive income attributable to noncontrolling interests — — (36,078 ) — (36,078 ) Comprehensive income (loss) attributable to RenaissanceRe $ 126,348 $ (650 ) $ 129,058 $ (128,453 ) $ 126,303 (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 June 30, 2015 RenaissanceRe Platinum Underwriters Holdings, Ltd. (Subsidiary Guarantor) RenRe North Platinum Underwriters Finance, Inc. (Subsidiary Issuer) RenaissanceRe Finance, Inc. (Subsidiary Issuer) Other Consolidating RenaissanceRe Comprehensive income (loss) Net income (loss) $ 78,829 $ (2,220 ) $ (2,578 ) $ (2,443 ) $ (3,954 ) $ 83,180 $ (59,818 ) $ 90,996 Change in net unrealized gains on investments — — — — — (349 ) — (349 ) Comprehensive income (loss) 78,829 (2,220 ) (2,578 ) (2,443 ) (3,954 ) 82,831 (59,818 ) 90,647 Net income attributable to noncontrolling interests — — — — — (12,167 ) — (12,167 ) Comprehensive income attributable to noncontrolling interests — — — — — (12,167 ) — (12,167 ) Comprehensive income (loss) attributable to RenaissanceRe $ 78,829 $ (2,220 ) $ (2,578 ) $ (2,443 ) $ (3,954 ) $ 70,664 $ (59,818 ) $ 78,480 (1) Includes all other subsidiaries of RenaissanceRe Holdings Ltd. and eliminations. (2) Includes Parent Guarantor and Subsidiary Issuer consolidating adjustments.
Condensed Consolidating Statements Of Cash Flows	Condensed Consolidating Statement of Cash Flows RenaissanceRe Platinum Underwriters Holdings, Ltd. (Subsidiary Guarantor) RenRe North Platinum Underwriters Finance, Inc. (Subsidiary Issuer) RenaissanceRe Finance, Inc. (Subsidiary Issuer) Other RenaissanceRe Consolidated Cash flows provided by (used in) operating activities Net cash provided by (used in) operating activities $ 66,113 $ (1,326 ) $ (5,393 ) $ (10,030 ) $ (119,583 ) $ 40,849 $ (29,370 ) Cash flows (used in) provided by investing activities Proceeds from sales and maturities of fixed maturity investments trading 14,718 — 7,016 45,087 — 4,695,154 4,761,975 Purchases of fixed maturity investments trading (56,559 ) — (38,668 ) — — (4,500,891 ) (4,596,118 ) Proceeds from sales and maturities of fixed maturity investments available for sale — — — — — 5,000 5,000 Net sales (purchases) of equity investments trading — — 33,687 (273,501 ) — 73,329 (166,485 ) Net (purchases) sales of short term investments (1,088 ) — (5,848 ) 238,048 — 129,050 360,162 Net purchases of other investments — — — — — (1,250 ) (1,250 ) Net purchases of investments in other ventures — — — — — (45 ) (45 ) Net sales of other assets — — — — — 4,500 4,500 Dividends and return of capital from subsidiaries 1,009,161 (30,000 ) — — — (979,161 ) — Contributions to subsidiaries (205,362 ) — 10,342 — (180,000 ) 375,020 — Due (from) to subsidiary (3,595 ) (21,913 ) (23 ) (52 ) 407 25,176 — Net purchase of Platinum (904,433 ) 62,420 — 1,537 — 162,324 (678,152 ) Net cash (used in) provided by investing activities (147,158 ) 10,507 6,506 11,119 (179,593 ) (11,794 ) (310,413 ) Cash flows provided by (used in) financing activities Dividends paid – RenaissanceRe common shares (27,479 ) — — — — — (27,479 ) Dividends paid – preference shares (11,191 ) — — — — — (11,191 ) RenaissanceRe common share repurchases (736 ) — — — — — (736 ) Net issuance (repayment) of debt 117,000 — — — 299,400 29,189 445,589 Net third party redeemable noncontrolling interest share transactions — — — — — (187,064 ) (187,064 ) Net cash provided by (used in) financing activities 77,594 — — — 299,400 (157,875 ) 219,119 Effect of exchange rate changes on foreign currency cash — — — — — (6,830 ) (6,830 ) Net (decrease) increase in cash and cash equivalents (3,451 ) 9,181 1,113 1,089 224 (135,650 ) (127,494 ) Cash and cash equivalents, beginning of period 5,986 — 1,033 — — 518,565 525,584 Cash and cash equivalents, end of period $ 2,535 $ 9,181 $ 2,146 $ 1,089 $ 224 $ 382,915 $ 398,090 (1) Includes all other subsidiaries of RenaissanceRe Holdings Ltd. and eliminations. Condensed Consolidating Statement of Cash Flows RenaissanceRe Holdings Ltd. (Parent Guarantor) RenRe North America Holdings Inc. (Subsidiary Issuer) Other RenaissanceRe Holdings Ltd. Subsidiaries and Eliminations (Non-guarantor Subsidiaries) (1) RenaissanceRe Consolidated Cash flows (used in) provided by operating activities Net cash (used in) provided by operating activities $ (14,828 ) $ (8,410 ) $ 196,624 $ 173,386 Cash flows provided by (used in) investing activities Proceeds from sales and maturities of fixed maturity investments trading 4,912 5,353 4,009,909 4,020,174 Purchases of fixed maturity investments trading (79,714 ) — (3,890,603 ) (3,970,317 ) Proceeds from sales and maturities of fixed maturity investments available for sale — — 5,114 5,114 Net purchases of equity investments trading — (370 ) (10,776 ) (11,146 ) Net sales (purchases) of short term investments 116,511 (68 ) (26,894 ) 89,549 Net sales of other investments — — 68,684 68,684 Net sales of investments in other ventures — — 1,030 1,030 Net sales of other assets — — 6,000 6,000 Dividends and return of capital from subsidiaries 359,891 5,406 (365,297 ) — Contributions to subsidiaries (47,220 ) (1,950 ) 49,170 — Due to (from) subsidiaries 4,123 (777 ) (3,346 ) — Net cash provided by (used in) investing activities 358,503 7,594 (157,009 ) 209,088 Cash flows used in financing activities Dividends paid – RenaissanceRe common shares (23,550 ) — — (23,550 ) Dividends paid – preference shares (11,191 ) — — (11,191 ) RenaissanceRe common share repurchases (314,536 ) — — (314,536 ) Net third party redeemable noncontrolling interest share transactions — — (144,096 ) (144,096 ) Net cash used in financing activities (349,277 ) — (144,096 ) (493,373 ) Effect of exchange rate changes on foreign currency cash — — (2,676 ) (2,676 ) Net decrease in cash and cash equivalents (5,602 ) (816 ) (107,157 ) (113,575 ) Cash and cash equivalents, beginning of period 8,796 4,027 395,209 408,032 Cash and cash equivalents, end of period $ 3,194 $ 3,211 $ 288,052 $ 294,457 (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%

Acquisition of Platinum Narrati

Acquisition of Platinum Narrative (Details) - USD ($)	Jun. 30, 2015	Mar. 31, 2015	Mar. 24, 2015	Mar. 02, 2015	Jun. 30, 2015	Mar. 01, 2015	Dec. 31, 2014	Jun. 30, 2015
Bridge Loan
Business Acquisition [Line Items]
Short-term debt				$ 300,000,000
Common Shares
Business Acquisition [Line Items]
Dividends per common share, in usd per share	$ 0.3	$ 0.3
Platinum
Business Acquisition [Line Items]
Dividends per common share, in usd per share						$ 10
Dividends paid, value				253,203,000		$ 253,203,000
Funds available to fund acquisition				$ 604,400,000
RenaissanceRe Finance, Inc. | 3.700% Senior Notes Due April 1, 2025
Business Acquisition [Line Items]
Debt issued			$ 300,000,000
Senior notes interest rate			3.70%
Debt instrument maturity date			April 1, 2025
Platinum
Business Acquisition [Line Items]
Percent acquired				100.00%
Share price, in usd per share				$ 76
Aggregate consideration transferred				$ 1,932,405,000
Cash consideration paid by RenaissanceRe to common shareholders of Platinum and holders of Platinum equity awards				1,160,000,000
Transaction-related costs							$ 6,700,000	$ 48,200,000
Acquisition-related costs								12,500,000
Integration-related costs								3,700,000
Compensation-related costs								32,000,000
Goodwill				191,729,000
Finite lived intangible assets acquired				$ 75,200,000
Weighted average useful life				8 years
Indefinite lived intangible assets acquired				$ 8,400,000
Adjustment to deferred tax asset				29,069,000
Total adjustments for fair value of the identifiable intangible assets				$ (13,115,000)
Reduction in deferred tax asset valuation allowance								47,400,000
Platinum | Common Shares
Business Acquisition [Line Items]
Share price, in usd per share				$ 35.96
Shares issued				7,434,561
Shares issued, value				$ 761,819,000
Cash consideration paid by RenaissanceRe to common shareholders of Platinum and holders of Platinum equity awards				$ 904,433,000
Platinum | Platinum
Business Acquisition [Line Items]
Transaction-related costs					$ 5,800,000			$ 34,200,000

Acquisition of Platinum Purchas

Acquisition of Platinum Purchase Price (Details) - USD ($) $ / shares in Units, $ in Thousands	Jun. 30, 2015	Mar. 31, 2015	Mar. 02, 2015	Mar. 01, 2015
Common Shares
Business Acquisition [Line Items]
Dividends per common share, in usd per share	$ 0.3	$ 0.3
Share price, in usd per share			$ 102.47
Platinum
Business Acquisition [Line Items]
Agreed cash price paid to common shareholders of Platinum and Platinum Awards, in usd per share			$ 76
Cash consideration paid by RenaissanceRe to common shareholders of Platinum and holders of Platinum equity awards			$ 1,160,000
Aggregate consideration transferred			1,932,405
Total net purchase price paid by RenaissanceRe			$ 1,679,202
Platinum | Common Shares
Business Acquisition [Line Items]
Number of Platinum common shares and Platinum equity awards canceled in the acquisition of Platinum			25,320,312
Shares issued			7,434,561
Shares issued, value			$ 761,819
Fair value of Platinum common shares owned by RenaissanceRe and canceled in connection with the acquisition of Platinum			$ 12,950
Platinum common shares owned by RenaissanceRe and canceled in connection with the acquisition of Platinum			(169,220)
Number of Platinum common shares and Platinum equity awards canceled in the acquisition of Platinum excluding those owned by RenaissanceRe and canceled in connection with the acquisition of Platinum			25,151,092
Agreed cash price paid to common shareholders of Platinum and Platinum Awards, in usd per share			$ 35.96
Cash consideration paid by RenaissanceRe to common shareholders of Platinum and holders of Platinum equity awards			$ 904,433
Platinum
Business Acquisition [Line Items]
Number of Platinum common shares and Platinum equity awards canceled in the acquisition of Platinum				25,320,312
Dividends per common share, in usd per share				$ 10
Dividends paid, value			$ 253,203	$ 253,203

Acquisition of Platinum Fair Va

Acquisition of Platinum Fair Value of Net Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Mar. 02, 2015	Mar. 01, 2015	Jun. 30, 2015	Dec. 31, 2014
Business Acquisition [Line Items]
Shareholders’ equity of Platinum prior to Special Dividend			$ 4,836,944	$ 3,865,715
Platinum
Adjustments for Fair Value, By Applicable Balance Sheet Caption [Abstract]
Deferred acquisition costs	$ (44,486)
Debt	(28,899)
Reserve for claims and claim expenses	(21,725)
Other assets - deferred debt issuance costs	(1,046)
Total adjustments for fair value by applicable balance sheet caption before tax impact	(96,156)
Other assets - net deferred tax asset related to fair value adjustments	29,069
Total adjustments for fair value by applicable balance sheet caption	(67,087)
Adjustments for Fair Value of the Identifiable Intangible Assets [Abstract]
Identifiable indefinite lived intangible assets (insurance licenses)	8,400
Identifiable finite lived intangible assets (non-contractual relationships, renewal rights, value of business acquired, trade name, internally developed and used computer software and covenants not to compete)	75,200
Identifiable intangible assets before tax impact		$ 83,600
Total adjustments for fair value of the identifiable intangible assets	(13,115)
Total adjustments for fair value of the identifiable intangible assets	70,485
Total adjustments for fair value by applicable balance sheet caption and identifiable intangible assets	3,398
Shareholders’ equity of Platinum at fair value	1,487,473
Total net purchase price paid by RenaissanceRe	1,679,202
Excess purchase price over the fair value of net assets acquired assigned to goodwill	191,729
Platinum
Business Acquisition [Line Items]
Shareholders’ equity of Platinum prior to Special Dividend		1,737,278
Cash and cash equivalents (Special Dividend on Platinum common shares and Platinum equity awards)	(253,203)	$ (253,203)
Adjusted shareholders’ equity of Platinum at March 2, 2015	$ 1,484,075

Acquisition of Platinum Intangi

Acquisition of Platinum Intangible Assets (Details) - Platinum - USD ($) $ in Thousands	Mar. 02, 2015	Jun. 30, 2015
Business Acquisition [Line Items]
Finite lived intangible assets acquired	$ 75,200
Indefinite lived intangible assets acquired	8,400
Identifiable intangible assets, before amortization, at March 2, 2015	83,600
Amortization (from March 2, 2015 through June 30, 2015)		$ (7,385)
Net identifiable intangible assets at June 30, 2015 related to the acquisition of Platinum		$ 76,215
Insurance licenses
Business Acquisition [Line Items]
Indefinite lived intangible assets acquired	8,400
Key non-contractual relationships
Business Acquisition [Line Items]
Finite lived intangible assets acquired	$ 30,400
Useful life	10 years
Value of business acquired
Business Acquisition [Line Items]
Finite lived intangible assets acquired	$ 20,200
Useful life	2 years
Renewal rights
Business Acquisition [Line Items]
Finite lived intangible assets acquired	$ 15,800
Useful life	15 years
Internally developed and used computer software
Business Acquisition [Line Items]
Finite lived intangible assets acquired	$ 3,500
Useful life	2 years
Other non-contractual relationships
Business Acquisition [Line Items]
Finite lived intangible assets acquired	$ 2,300
Useful life	3 years
Non-compete agreements
Business Acquisition [Line Items]
Finite lived intangible assets acquired	$ 1,900
Useful life	2 years 6 months
Trade name
Business Acquisition [Line Items]
Finite lived intangible assets acquired	$ 1,100
Useful life	6 months

Acquisition of Platinum Financi

Acquisition of Platinum Financial Results (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Business Acquisition [Line Items]
Revenues	$ 397,567		$ 331,174	$ 779,487	$ 674,783
Net income available to RenaissanceRe common shareholders	73,233		$ 120,752	241,076	$ 271,755
Platinum
Business Acquisition [Line Items]
Transaction-related costs		$ 6,700		48,200
Revenues	106,691			146,830
Net income available to RenaissanceRe common shareholders	5,004			(14,435)
Platinum | Platinum
Business Acquisition [Line Items]
Transaction-related costs	$ 5,800			$ 34,200

Acquisition of Platinum Supplem

Acquisition of Platinum Supplemental ProForma Information (Details) - Platinum - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Business Acquisition [Line Items]
Total revenues	$ 397,567	$ 488,999	$ 858,120	$ 1,003,016
Net income available to RenaissanceRe common shareholders	$ 73,233	$ 174,678	$ 256,039	$ 373,772

Investments (Schedule of Fair V

Investments (Schedule of Fair Value of Fixed Maturity Investments Trading) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Investment [Line Items]
Fixed maturity investments trading, at fair value	$ 6,591,434	$ 4,756,685
U.S. treasuries
Investment [Line Items]
Fixed maturity investments trading, at fair value	2,020,746	1,671,471
Agencies
Investment [Line Items]
Fixed maturity investments trading, at fair value	144,947	96,208
Municipal
Investment [Line Items]
Fixed maturity investments trading, at fair value	806,724	0
Non-U.S. government (Sovereign Debt)
Investment [Line Items]
Fixed maturity investments trading, at fair value	370,613	280,651
Non-U.S. government-backed corporate
Investment [Line Items]
Fixed maturity investments trading, at fair value	172,381	146,467
Corporate
Investment [Line Items]
Fixed maturity investments trading, at fair value	1,865,369	1,610,442
Agency mortgage-backed
Investment [Line Items]
Fixed maturity investments trading, at fair value	474,966	312,333
Non-agency mortgage-backed
Investment [Line Items]
Fixed maturity investments trading, at fair value	253,044	241,590
Commercial mortgage-backed
Investment [Line Items]
Fixed maturity investments trading, at fair value	419,218	373,117
Asset-backed
Investment [Line Items]
Fixed maturity investments trading, at fair value	$ 63,426	$ 24,406

Investments (Schedule of Fair43

Investments (Schedule of Fair Value of Fixed Maturity Investments Available for Sale) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Investment [Line Items]
Available for Sale, Amortized Cost	$ 19,384	$ 23,772
Available for Sale, Fair Value	21,754	26,885
Fixed maturity investments
Investment [Line Items]
Available for Sale, Amortized Cost	19,384	23,772
Gross Unrealized Gains	2,382	3,116
Gross Unrealized Losses	(12)	(3)
Available for Sale, Fair Value	21,754	26,885
Non-Credit Other-Than-Temporary Impairments	613	656
Agency mortgage-backed
Investment [Line Items]
Available for Sale, Amortized Cost	903	3,928
Gross Unrealized Gains	10	359
Gross Unrealized Losses	(9)	0
Available for Sale, Fair Value	904	4,287
Non-Credit Other-Than-Temporary Impairments	0	0
Non-agency mortgage-backed
Investment [Line Items]
Available for Sale, Amortized Cost	8,498	9,478
Gross Unrealized Gains	1,790	1,985
Gross Unrealized Losses	(3)	(3)
Available for Sale, Fair Value	10,285	11,460
Non-Credit Other-Than-Temporary Impairments	613	656
Commercial mortgage-backed
Investment [Line Items]
Available for Sale, Amortized Cost	7,182	7,291
Gross Unrealized Gains	495	643
Gross Unrealized Losses	0	0
Available for Sale, Fair Value	7,677	7,934
Non-Credit Other-Than-Temporary Impairments	0	0
Asset-backed
Investment [Line Items]
Available for Sale, Amortized Cost	2,801	3,075
Gross Unrealized Gains	87	129
Gross Unrealized Losses	0	0
Available for Sale, Fair Value	2,888	3,204
Non-Credit Other-Than-Temporary Impairments	$ 0	$ 0

Investments (Schedule of Contra

Investments (Schedule of Contractual Maturities of Fixed Maturity Investments) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Trading Securities [Abstract]
Trading Debt Securities, Amortized Cost, Due in less than one year	$ 220,880
Trading Debt Securities, Amortized Cost, Due after one through five years	3,862,284
Trading Debt Securities, Amortized Cost, Due after five through ten years	983,765
Trading Debt Securities, Amortized Cost, Due after ten years	337,497
Trading Debt Securities, Amortized Cost	6,603,492
Trading Debt Securities, Fair Value, Due in less than one year	219,382
Trading Debt Securities, Fair Value, Due after one through five years	3,859,616
Trading Debt Securities, Fair Value, Due after five through ten years	970,723
Trading Debt Securities, Fair Value, Due after ten years	331,059
Trading Debt Securities, Fair Value	6,591,434
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	19,384	$ 23,772
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	21,754	$ 26,885
Fixed Maturity Investments [Abstract]
Debt Securities, Amortized Cost, Due in less than one year	220,880
Debt Securities, Amortized Cost, Due after one through five years	3,862,284
Debt Securities, Amortized Cost, Due after five through ten years	983,765
Debt Securities, Amortized Cost, Due after ten years	337,497
Debt Securities, Amortized Cost	6,622,876
Debt Securities, Fair Value, Due in less than one year	219,382
Debt Securities, Fair Value, Due after one through give years	3,859,616
Debt Securities, Fair Value, Due after five through ten years	970,723
Debt Securities, Fair Value, Due after ten years	331,059
Debt Securities, Fair Value	6,613,188
Mortgage-backed
Trading Securities [Abstract]
Trading Debt Securities, Amortized Cost	1,135,710
Trading Debt Securities, Fair Value	1,147,228
Available-for-sale Securities [Abstract]
Available for Sale, Amortized Cost	16,583
Available for Sale, Fair Value	18,866
Fixed Maturity Investments [Abstract]
Debt Securities, Amortized Cost	1,152,293
Debt Securities, Fair Value	1,166,094
Asset-backed
Trading Securities [Abstract]
Trading Debt Securities, Amortized Cost	63,356
Trading Debt Securities, Fair Value	63,426
Available-for-sale Securities [Abstract]
Available for Sale, Amortized Cost	2,801
Available for Sale, Fair Value	2,888
Fixed Maturity Investments [Abstract]
Debt Securities, Amortized Cost	66,157
Debt Securities, Fair Value	$ 66,314

Investments (Schedule of Fair45

Investments (Schedule of Fair Value of Equity Investments Trading) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Schedule of Trading Securities and Other Trading Assets [Line Items]
Equity investments trading	$ 493,056	$ 322,098
Financials
Schedule of Trading Securities and Other Trading Assets [Line Items]
Equity investments trading	228,777	222,190
Communications and technology
Schedule of Trading Securities and Other Trading Assets [Line Items]
Equity investments trading	84,522	31,376
Industrial, utilities and energy
Schedule of Trading Securities and Other Trading Assets [Line Items]
Equity investments trading	71,168	28,859
Consumer
Schedule of Trading Securities and Other Trading Assets [Line Items]
Equity investments trading	50,764	19,522
Healthcare
Schedule of Trading Securities and Other Trading Assets [Line Items]
Equity investments trading	48,572	16,582
Basic materials
Schedule of Trading Securities and Other Trading Assets [Line Items]
Equity investments trading	$ 9,253	$ 3,569

Investments (Pledged Investment

Investments (Pledged Investments) (Details) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014
Investments [Abstract]
Cash and investments at fair value on deposit with, or in trust accounts for the benefit of various counterparties	$ 2,463.2	$ 2,379.4
Cash and investments at fair value on deposit with, or in trust accounts for the benefit of U.S. state regulatory authorities	$ 665.8	$ 691.9

Investments (Reverse Purchase A

Investments (Reverse Purchase Agreements) (Details) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014
Investments, Debt and Equity Securities [Abstract]
Value of reverse repurchase agreements	$ 78.2	$ 49.3
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		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Investment income before investment expenses	$ 42,227	$ 37,353	$ 85,036	$ 79,135
Investment expenses	(3,623)	(2,812)	(6,725)	(5,646)
Net investment income	38,604	34,541	78,311	73,489
Fixed maturity investments
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Investment income before investment expenses	33,791	26,372	59,730	50,232
Short term investments
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Investment income before investment expenses	297	286	494	476
Equity investments
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Investment income before investment expenses	1,913	779	4,517	1,575
Other investments, Hedge funds and private equity investments
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Investment income before investment expenses	5,425	8,340	15,838	20,657
Other investments, Other
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Investment income before investment expenses	674	1,483	4,182	6,011
Cash and cash equivalents
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Investment income before investment expenses	$ 127	$ 93	$ 275	$ 184

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		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Gain (Loss) on Investments [Line Items]
Net realized and unrealized (losses) gains on investments	$ (26,712)	$ 27,128	$ 15,037	$ 42,055
Fixed maturity investments
Gain (Loss) on Investments [Line Items]
Gross realized gains	8,672	12,166	30,204	25,633
Gross realized losses	(21,552)	(2,587)	(26,423)	(8,151)
Net realized (losses) gains on fixed maturity investments	(12,880)	9,579	3,781	17,482
Net unrealized gains (losses) on investments trading	(48,104)	29,918	(22,132)	57,800
Derivatives
Gain (Loss) on Investments [Line Items]
Net realized and unrealized gains (losses) on investments-related derivatives	19,816	(6,884)	15,608	(17,783)
Equity investments
Gain (Loss) on Investments [Line Items]
Net unrealized gains (losses) on investments trading	5,624	(10,619)	1,467	(20,499)
Net realized gains on equity investments trading	$ 8,832	$ 5,134	$ 16,313	$ 5,055

Investments (Schedule of Compon

Investments (Schedule of Components of Other Comprehensive Income and Reclassification Out of Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Accumulated Other Comprehensive Income (Loss) Rollforward
Beginning balance	$ 3,342	$ 3,963	$ 3,416	$ 4,131
Other comprehensive income (loss) before reclassifications	(62)	(45)	(85)	(213)
Realized gains reclassified from accumulated other comprehensive income to net realized and unrealized gains on investments	(287)		(338)
Net current-period other comprehensive income (loss)	(349)	(45)	(423)	(213)
Ending balance	2,993	3,918	2,993	3,918
Investments in other ventures
Accumulated Other Comprehensive Income (Loss) Rollforward
Beginning balance	412	160	303	163
Other comprehensive income (loss) before reclassifications	211	51	320	48
Realized gains reclassified from accumulated other comprehensive income to net realized and unrealized gains on investments	0		0
Net current-period other comprehensive income (loss)	211		320
Ending balance	623	211	623	211
Fixed maturity investments available for sale
Accumulated Other Comprehensive Income (Loss) Rollforward
Beginning balance	2,930	3,803	3,113	3,968
Other comprehensive income (loss) before reclassifications	(273)	(96)	(405)	(261)
Realized gains reclassified from accumulated other comprehensive income to net realized and unrealized gains on investments	(287)		(338)
Net current-period other comprehensive income (loss)	(560)		(743)
Ending balance	$ 2,370	$ 3,707	$ 2,370	$ 3,707

Investments (Schedule of Fixed

Investments (Schedule of Fixed Maturity Investments Available For Sale In Continual Unrealized Loss Position) (Details) $ in Thousands	Jun. 30, 2015USD ($)securities	Dec. 31, 2014USD ($)securities
Schedule of Available-for-sale Securities [Line Items]
Fixed maturity investments available for sale in a unrealized loss position | securities	3	2
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year | securities	2	2
Fixed maturity investments
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	$ 569	$ 0
Less than 12 Months, Unrealized Losses	(9)	0
12 Months or Greater, Fair Value	65	69
12 Months or Greater, Unrealized Losses	(3)	(3)
Total, Fair Value	634	69
Total, Unrealized Losses	(12)	(3)
Agency mortgage-backed
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	569
Less than 12 Months, Unrealized Losses	(9)
12 Months or Greater, Fair Value	0
12 Months or Greater, Unrealized Losses	0
Total, Fair Value	569
Total, Unrealized Losses	(9)
Non-agency mortgage-backed
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	0	0
Less than 12 Months, Unrealized Losses	0	0
12 Months or Greater, Fair Value	65	69
12 Months or Greater, Unrealized Losses	(3)	(3)
Total, Fair Value	65	69
Total, Unrealized Losses	$ (3)	$ (3)

Investments (Rollforward of The

Investments (Rollforward of The Amount of Other-Than-Temporary Impairments Related to Credit Losses Recognized in Earnings for Which a Portion of an Other-Than-Temporary Impairment was Recognized in Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Investments [Abstract]
Net other-than-temporary impairments			$ 0	$ 0
Portion of other-than-temporary impairments recognized in other comprehensive income			0	0
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward]
Beginning balance	$ 485	$ 545	498	561
Reductions:
Securities sold during the period	(19)	(16)	(32)	(32)
Ending balance	$ 466	$ 529	$ 466	$ 529

Fair Value Measurements (Assets

Fair Value Measurements (Assets and Liabilities Measured at Fair Value on a Recurring Basis) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturity investments	$ 6,613,188	$ 4,783,570
Short term investments	1,543,191	1,013,222
Equity investments trading	493,056	322,098
Other investments	504,693	504,147
Other assets and (liabilities)	67,036	(13,908)
Total assets and liabilities measured on recurring basis	9,221,164	6,609,129
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	2,020,746	1,671,471
Short term investments	0	0
Equity investments trading	493,056	322,098
Other investments	0	0
Other assets and (liabilities)	(23)	(569)
Total assets and liabilities measured on recurring basis	2,513,779	1,993,000
Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturity investments	4,584,782	3,096,439
Short term investments	1,543,191	1,013,222
Equity investments trading	0	0
Other investments	228,998	200,329
Other assets and (liabilities)	(8,628)	(4,405)
Total assets and liabilities measured on recurring basis	6,348,343	4,305,585
Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturity investments	7,660	15,660
Short term investments	0	0
Equity investments trading	0	0
Other investments	275,695	303,818
Other assets and (liabilities)	75,687	(8,934)
Total assets and liabilities measured on recurring basis	359,042	310,544
U.S. treasuries
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturity investments	2,020,746	1,671,471
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	2,020,746	1,671,471
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
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
Agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturity investments	144,947	96,208
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
Agencies | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturity investments	144,947	96,208
Agencies | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturity investments	0	0
Municipal
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturity investments	806,724
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
Municipal | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturity investments	806,724
Municipal | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturity investments	0
Non-U.S. government (Sovereign Debt)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturity investments	370,613	280,651
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
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	370,613	280,651
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
Non-U.S. government-backed corporate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturity investments	172,381	146,467
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
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	172,381	146,467
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
Corporate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturity investments	1,865,369	1,610,442
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
Corporate | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturity investments	1,857,709	1,594,782
Corporate | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturity investments	7,660	15,660
Agency mortgage-backed
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturity investments	475,870	316,620
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
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	475,870	316,620
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
Non-agency mortgage-backed
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturity investments	263,329	253,050
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
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	263,329	253,050
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
Commercial mortgage-backed
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturity investments	426,895	381,051
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
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	426,895	381,051
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
Asset-backed
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturity investments	66,314	27,610
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
Asset-backed | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fixed maturity investments	66,314	27,610
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
Private equity partnerships
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other investments	250,796	281,932
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
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
Private equity partnerships | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other investments	250,796	281,932
Catastrophe bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other investments	228,998	200,329
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
Catastrophe bonds | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other investments	228,998	200,329
Catastrophe bonds | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other investments	0	0
Senior secured bank loan funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other investments	22,561	19,316
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
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
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	22,561	19,316
Hedge funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other investments	2,338	2,570
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
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
Hedge funds | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other investments	2,338	2,570
Assumed and ceded (re)insurance contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other assets and (liabilities)	75,701	(8,744)
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
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
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)	75,701	(8,744)
Derivatives
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other assets and (liabilities)	(4,082)	6,345
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)	(23)	(569)
Derivatives | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other assets and (liabilities)	(4,045)	7,104
Derivatives | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other assets and (liabilities)	(14)	(190)
Other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other assets and (liabilities)	(4,583)	(11,509)
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
Other | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other assets and (liabilities)	(4,583)	(11,509)
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 ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other assets and (liabilities)	$ 67,036		$ 67,036		$ (13,908)
Debt	972,362		972,362		249,522
Debt, fair value	984,776		984,776		279,000
Net unrealized gains (losses) recognized in earnings			3,238	$ 8,879
Other Investments | Net investment income
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Net unrealized gains (losses) recognized in earnings	(1,600)	$ 3,900	3,200	$ 8,900
Other assets and liabilities | Other income (loss)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Net unrealized gains (losses) recognized in earnings	(300)		(300)
Quoted Prices In Active Markets For Identical Assets (Level 1)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other assets and (liabilities)	(23)		(23)		(569)
Significant Other Observable Inputs (Level 2)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other assets and (liabilities)	(8,628)		(8,628)		(4,405)
Significant Unobservable Inputs (Level 3)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other assets and (liabilities)	75,687		75,687		$ (8,934)
Assets, fair value	359,042		359,042
Significant Unobservable Inputs (Level 3) | Corporate | Discounted Cash Flow Valuation Technique
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets, fair value	7,660		$ 7,660
Significant Unobservable Inputs (Level 3) | Corporate | Weighted Average or Actual | Discounted Cash Flow Valuation Technique
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Dividend rate			6.50%
Liquidity discount			1.00%
Risk-free rate			0.30%
Credit spread			3.60%
Significant Unobservable Inputs (Level 3) | Private equity partnerships | Net Asset Valuation Technique
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets, fair value	$ 250,796		$ 250,796
Significant Unobservable Inputs (Level 3) | Private equity partnerships | Weighted Average or Actual | Net Asset Valuation Technique
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Estimated performance	3.10%
Significant Unobservable Inputs (Level 3) | Private equity partnerships | Minimum | Net Asset Valuation Technique
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Estimated performance	(30.20%)
Significant Unobservable Inputs (Level 3) | Private equity partnerships | Maximum | Net Asset Valuation Technique
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Estimated performance	14.00%
Significant Unobservable Inputs (Level 3) | Senior secured bank loan funds | Net Asset Valuation Technique
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets, fair value	$ 22,561		22,561
Significant Unobservable Inputs (Level 3) | Senior secured bank loan funds | Weighted Average or Actual | Net Asset Valuation Technique
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Estimated performance	1.20%
Significant Unobservable Inputs (Level 3) | Hedge funds | Net Asset Valuation Technique
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets, fair value	$ 2,338		2,338
Significant Unobservable Inputs (Level 3) | Hedge funds | Weighted Average or Actual | Net Asset Valuation Technique
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Estimated performance	0.00%
Significant Unobservable Inputs (Level 3) | Hedge funds | Minimum | Net Asset Valuation Technique
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Estimated performance	0.00%
Significant Unobservable Inputs (Level 3) | Hedge funds | Maximum | Net Asset Valuation Technique
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Estimated performance	0.00%
Significant Unobservable Inputs (Level 3) | Reinsurance deposit asset | Internal Valuation Model Valuation Technique
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets, fair value	$ 82,905		$ 82,905
Significant Unobservable Inputs (Level 3) | Reinsurance deposit asset | Weighted Average or Actual | Internal Valuation Model Valuation Technique
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Estimated performance			3.00%
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	(1,308)		$ (1,308)
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	(5,896)		(5,896)
Significant Unobservable Inputs (Level 3) | Weather contract | Internal Valuation Model Valuation Technique
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Liabilities, fair value	$ (14)		$ (14)
U.S. treasuries
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Weighted average effective yield	1.00%		1.00%		1.00%
Agencies
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Weighted average effective yield	1.70%		1.70%		1.20%
Municipal
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Weighted average effective yield	2.40%		2.40%
Non-U.S. government (Sovereign Debt)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Weighted average effective yield	1.20%		1.20%		1.10%
Non-U.S. government-backed corporate
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Weighted average effective yield	1.10%		1.10%		1.10%
Corporate
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Weighted average effective yield	3.20%		3.20%		3.20%
Agency mortgage-backed
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Weighted average effective yield	2.20%		2.20%		2.30%
Weighted average life			6 years		5 years 7 months 6 days
Non-agency prime residential mortgage-backed
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Weighted average effective yield	3.40%		3.40%		3.40%
Weighted average life			4 years 1 month 6 days		4 years 1 month 6 days
AltA non-agency mortgage-backed
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Weighted average effective yield	4.10%		4.10%		4.30%
Weighted average life			5 years 1 month 6 days		5 years
Commercial mortgage-backed
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Weighted average effective yield	2.40%		2.40%		2.10%
Weighted average life			3 years		3 years 6 months
Asset-backed
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Weighted average effective yield	1.40%		1.40%		1.50%
Weighted average life			2 years 4 months 24 days		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 assets and (liabilities)	$ (4,600)		$ (4,600)
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
Private equity partnerships | Significant Unobservable Inputs (Level 3) | Net Asset Valuation Technique
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets, fair value	250,800		$ 250,800
Senior secured bank loan funds
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment in closed end fund	22,600		$ 22,600
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	$ 2,300		$ 2,300

Fair Value Measurements (Quanti

Fair Value Measurements (Quantitative Information Used As Level 3 Inputs) (Details) - Jun. 30, 2015 - Significant Unobservable Inputs (Level 3) $ in Thousands	USD ($)d	USD ($)d$ / bond
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Assets, fair value	$ 359,042	$ 359,042
Corporate | Discounted Cash Flow Valuation Technique
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Assets, fair value	7,660	$ 7,660
Corporate | Discounted Cash Flow Valuation Technique | Weighted Average or Actual
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Credit spread		3.60%
Liquidity discount		1.00%
Risk-free rate		0.30%
Dividend rate		6.50%
Fixed maturity investments
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Assets, fair value	7,660	$ 7,660
Private equity partnerships | Net Asset Valuation Technique
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Assets, fair value	$ 250,796	250,796
Private equity partnerships | Net Asset Valuation Technique | Low
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Estimated performance	(30.20%)
Private equity partnerships | Net Asset Valuation Technique | Maximum
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Estimated performance	14.00%
Private equity partnerships | Net Asset Valuation Technique | Weighted Average or Actual
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Estimated performance	3.10%
Senior secured bank loan funds | Net Asset Valuation Technique
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Assets, fair value	$ 22,561	22,561
Senior secured bank loan funds | Net Asset Valuation Technique | Weighted Average or Actual
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Estimated performance	1.20%
Hedge funds | Net Asset Valuation Technique
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Assets, fair value	$ 2,338	2,338
Hedge funds | Net Asset Valuation Technique | Low
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Estimated performance	0.00%
Hedge funds | Net Asset Valuation Technique | Maximum
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Estimated performance	0.00%
Hedge funds | Net Asset Valuation Technique | Weighted Average or Actual
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Estimated performance	0.00%
Other Investments
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Assets, fair value	$ 275,695	275,695
Reinsurance deposit asset | Internal Valuation Model Valuation Technique
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Assets, fair value	82,905	$ 82,905
Reinsurance deposit asset | Internal Valuation Model Valuation Technique | Weighted Average or Actual
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Estimated performance		3.00%
Assumed reinsurance contract | Internal Valuation Model Valuation Technique
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Liabilities, fair value	(1,308)	$ (1,308)
Assumed reinsurance contract | Internal Valuation Model Valuation Technique | Low
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Bond price | $ / bond		96.23
Assumed reinsurance contract | Internal Valuation Model Valuation Technique | Maximum
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Bond price | $ / bond		99.78
Assumed reinsurance contract | Internal Valuation Model Valuation Technique | Weighted Average or Actual
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Bond price | $ / bond		97.48
Liquidity premium		1.30%
Assumed and ceded (re)insurance contract | Internal Valuation Model Valuation Technique
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Liabilities, fair value	$ (5,896)	$ (5,896)
Assumed and ceded (re)insurance contract | Internal Valuation Model Valuation Technique | Low
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Contract period | d	194	194
Assumed and ceded (re)insurance contract | Internal Valuation Model Valuation Technique | Maximum
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Contract period | d	1,100	1,100
Assumed and ceded (re)insurance contract | Internal Valuation Model Valuation Technique | Weighted Average or Actual
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Net undiscounted cash flows		$ (9,233)
Expected loss ratio		28.00%
Net acquisition expense ratio		14.00%
Contract period | d	824	824
Discount rate		1.00%
Assumed and ceded (re)insurance contracts | Internal Valuation Model Valuation Technique
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Assets, fair value	$ 75,701	$ 75,701
Weather contract | Internal Valuation Model Valuation Technique
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Liabilities, fair value	$ (14)	$ (14)

Fair Value Measurements (Asse56

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		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at beginning of the period	$ 381,569	$ 378,609	$ 310,544	$ 369,338
Total unrealized (losses) gains
Included in net investment income	(404)	10,796	4,584	29,446
Included in other income (loss)	(348)	2,220	348	2,220
Total realized gains (losses)
Included in other income (loss)	1,512		2,828
Total foreign exchange gains (losses)	648	(226)	(1,844)	(253)
Purchases	6,681	10,391	92,840	25,392
Settlements	(30,616)	(20,394)	(49,562)	(44,747)
Balance at end of the period	359,042	381,396	359,042	381,396
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	(404)	10,617	4,584	29,446
Other income (loss)
Total realized gains (losses)
Change in unrealized gains for the period included in earnings for assets held at the end of the period	(348)	2,220	(348)	2,220
Fixed maturity investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at beginning of the period	15,474	37,138	15,660	27,580
Total unrealized (losses) gains
Included in net investment income	(314)	9,038	(500)	18,596
Included in other income (loss)	0	0	0	0
Total realized gains (losses)
Included in other income (loss)	0		0
Total foreign exchange gains (losses)	0	0	0	0
Purchases	0	0	0	0
Settlements	(7,500)	0	(7,500)	0
Balance at end of the period	7,660	46,176	7,660	46,176
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	(132)	9,038	(318)	18,596
Fixed maturity investments | Other income (loss)
Total realized gains (losses)
Change in unrealized gains for the period included in earnings for assets held at the end of the period	0	0	0	0
Other Investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at beginning of the period	293,126	342,778	303,818	344,248
Total unrealized (losses) gains
Included in net investment income	(106)	1,579	4,908	9,455
Included in other income (loss)	0	0	0	0
Total realized gains (losses)
Included in other income (loss)	0		0
Total foreign exchange gains (losses)	654	(205)	(1,844)	(199)
Purchases	5,137	10,391	10,875	25,392
Settlements	(23,116)	(20,394)	(42,062)	(44,747)
Balance at end of the period	275,695	334,149	275,695	334,149
Other 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	(106)	1,579	4,908	9,455
Other Investments | Other income (loss)
Total realized gains (losses)
Change in unrealized gains for the period included in earnings for assets held at the end of the period	0	0	0	0
Other assets and liabilities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at beginning of the period	72,969	(1,307)	(8,934)	(2,490)
Total unrealized (losses) gains
Included in net investment income	16	179	176	1,395
Included in other income (loss)	(348)	2,220	348	2,220
Total realized gains (losses)
Included in other income (loss)	1,512		2,828
Total foreign exchange gains (losses)	(6)	(21)	0	(54)
Purchases	1,544	0	81,965	0
Settlements	0	0	0	0
Balance at end of the period	75,687	1,071	75,687	1,071
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	16	0	176	1,395
Other assets and liabilities | Other income (loss)
Total realized gains (losses)
Change in unrealized gains for the period included in earnings for assets held at the end of the period	$ (348)	$ 2,220	$ (348)	$ 2,220

Fair Value Measurements (Summar

Fair Value Measurements (Summary Of The Balances Company Has Elected To Account For At Fair Value) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Fair Value Disclosures [Abstract]
Other investments	$ 504,693	$ 504,147
Other assets	88,086	5,664
Other liabilities	$ 12,385	$ 14,408

Fair Value Measurements (Compan

Fair Value Measurements (Company's Portfolio of Other Investments Measured Using Net Asset Valuations) (Details) $ in Thousands	Jun. 30, 2015USD ($)
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value	$ 275,695
Unfunded Commitments	186,062
Private equity partnerships
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value	250,796
Unfunded Commitments	182,880
Senior secured bank loan funds
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value	22,561
Unfunded Commitments	3,182
Hedge funds
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value	2,338
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		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Premiums written
Direct	$ 34,340	$ 19,707	$ 65,153	$ 33,562
Assumed	627,657	491,833	1,240,422	1,183,238
Ceded	(153,320)	(165,133)	(392,863)	(420,046)
Net premiums written	508,677	346,407	912,712	796,754
Premiums earned
Direct	21,606	14,949	44,507	29,178
Assumed	468,372	350,389	850,975	735,987
Ceded	(110,150)	(104,922)	(218,894)	(218,215)
Net premiums earned	379,828	260,416	676,588	546,950
Claims and claim expenses
Gross claims and claim expenses incurred	222,819	97,064	311,814	165,214
Claims and claim expenses recovered	(53,475)	(15,676)	(65,617)	(24,911)
Net claims and claim expenses incurred	$ 169,344	$ 81,388	$ 246,197	$ 140,303

Debt and Credit Facilities (Sum

Debt and Credit Facilities (Summary of Debt Obligations) (Details) - USD ($) $ in Thousands	May. 04, 2015	Mar. 24, 2015	Mar. 17, 2010	Nov. 02, 2005	Jun. 30, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Debt, fair value					$ 984,776	$ 279,000
Debt					972,362	249,522
RenaissanceRe Finance, Inc. | 3.700% Senior Notes Due April 1, 2025
Debt Instrument [Line Items]
Debt instrument maturity date		April 1, 2025
Debt, fair value					290,025	0
Debt					299,415	0
RenRe North America Holdings Inc. | 5.75% Senior Notes Due March 15, 2020
Debt Instrument [Line Items]
Debt instrument maturity date			March 15, 2020
Debt, fair value					275,000	279,000
Debt					249,578	249,522
Platinum Underwriters Finance, Inc. | Series B 7.50% Notes Due June 1, 2017
Debt Instrument [Line Items]
Debt instrument maturity date				June 1, 2017
Debt, fair value					274,063	0
Debt					274,618	0
DaVinciRe Holdings Ltd. | 4.750% Senior Notes Due May 1, 2025
Debt Instrument [Line Items]
Debt instrument maturity date	May 1, 2025
Debt, fair value					145,688	0
Debt					$ 148,751	$ 0

Debt and Credit Facilities (Nar

Debt and Credit Facilities (Narrative) (Details) £ in Thousands	May. 04, 2015USD ($)	Mar. 24, 2015USD ($)	Mar. 17, 2010USD ($)	Nov. 02, 2005USD ($)	Jun. 30, 2015USD ($)	Jun. 30, 2015GBP (£)	May. 15, 2015USD ($)	Mar. 31, 2015USD ($)	Mar. 02, 2015USD ($)
Debt Instrument [Line Items]
Margin facility amount outstanding					$ 613,249,000	£ 70,000
Bridge Loan
Debt Instrument [Line Items]
Short-term debt									$ 300,000,000
Revolving Credit Facility
Debt Instrument [Line Items]
Letters of credit outstanding					$ 0
Revolving Credit Facility
Debt Instrument [Line Items]
Letter of credit aggregate commitment							$ 250,000,000
Line of credit faciltiy, maximum borrowing capacity							$ 350,000,000
Debt to capital ratio					0.35	0.35
Minimum net worth requirements					$ 2,900,000,000
Standby Letter of Credit Facility | National Australia Bank Limited
Debt Instrument [Line Items]
Letters of credit outstanding					0
RenaissanceRe Finance, Inc. | 3.700% Senior Notes Due April 1, 2025
Debt Instrument [Line Items]
Senior notes interest rate		3.70%
Debt Instrument, face amount		$ 300,000,000
Debt instrument maturity date		April 1, 2025
RenRe North America Holdings Inc. | 5.75% Senior Notes Due March 15, 2020
Debt Instrument [Line Items]
Senior notes interest rate			5.75%
Debt Instrument, face amount			$ 250,000,000
Debt instrument maturity date			March 15, 2020
Platinum Underwriters Finance, Inc. | Series B 7.50% Notes Due June 1, 2017
Debt Instrument [Line Items]
Senior notes interest rate				7.50%
Debt Instrument, face amount				$ 250,000,000
Debt instrument maturity date				June 1, 2017
Bilateral Facility Participants | Bilateral Facility | Letter of Credit
Debt Instrument [Line Items]
Line of credit faciltiy, maximum borrowing capacity								$ 300,000,000
Bilateral Facility Participants | Bilateral Facility | Letter of Credit | Citibank Europe PLC
Debt Instrument [Line Items]
Letters of credit outstanding					143,778,000
Loan agreement, remaining borrowing capacity					156,200,000
DaVinciRe Holdings Ltd.
Debt Instrument [Line Items]
Loan agreement with related party	$ 100,000,000
DaVinciRe Holdings Ltd. | 4.750% Senior Notes Due May 1, 2025
Debt Instrument [Line Items]
Senior notes interest rate	4.75%
Debt Instrument, face amount	$ 150,000,000
Debt instrument maturity date	May 1, 2025
Syndicate 1458 | Letter of Credit | Citibank Europe PLC
Debt Instrument [Line Items]
Letters of credit outstanding					300,000,000
Margin facility amount outstanding | £						£ 70,000
RenaissanceRe Specialty Risks Ltd. | Letter of Credit | Citibank Europe PLC
Debt Instrument [Line Items]
Letters of credit outstanding					9,129,000
RenaissanceRe Specialty Risks Ltd. | Bilateral Facility | Letter of Credit
Debt Instrument [Line Items]
Line of credit faciltiy, maximum borrowing capacity								50,000,000
Platinum Underwriters Bermuda, Ltd. and Renaissance Reinsurance U.S. Inc. | Bilateral Facility | Letter of Credit
Debt Instrument [Line Items]
Line of credit faciltiy, maximum borrowing capacity								$ 25,000,000
Top Layer Reinsurance Ltd. | Letter of Credit
Debt Instrument [Line Items]
Collateralized letter of credit and reimbursement agreement					37,500,000
Top Layer Reinsurance Ltd. | Letter of Credit | Capital Support Agreement
Debt Instrument [Line Items]
Mandatory capital contribution in the event of capital and surplus reduction below a specified level					$ 50,000,000

Debt and Credit Facilities (Cre

Debt and Credit Facilities (Credit Facilities) (Details) - Jun. 30, 2015 £ in Thousands, $ in Thousands	USD ($)	GBP (£)
Debt Instrument [Line Items]
Long-term line of credit	$ 613,249	£ 70,000
Syndicate 1458 | Letter of Credit | Citibank Europe PLC
Debt Instrument [Line Items]
Letters of credit outstanding	300,000
Long-term line of credit | £		£ 70,000
RenaissanceRe Specialty Risks Ltd. | Letter of Credit | Citibank Europe PLC
Debt Instrument [Line Items]
Letters of credit outstanding	9,129
Standby Letter of Credit Facility | Wells Fargo
Debt Instrument [Line Items]
Letters of credit outstanding	160,342
Standby Letter of Credit Facility | National Australia Bank Limited
Debt Instrument [Line Items]
Letters of credit outstanding	0
Bilateral Facility | Bilateral Facility Participants | Letter of Credit | Citibank Europe PLC
Debt Instrument [Line Items]
Letters of credit outstanding	143,778
Revolving Credit Facility
Debt Instrument [Line Items]
Letters of credit outstanding	$ 0

Noncontrolling Interests (Narra

Noncontrolling Interests (Narrative) (Details) - USD ($) $ in Thousands	1 Months Ended		3 Months Ended		6 Months Ended		12 Months Ended
	Jan. 31, 2015	Jan. 31, 2014	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014	Jan. 01, 2015	Jul. 01, 2014	Jan. 01, 2014
DaVinciRe Holdings Ltd.
Redeemable Noncontrolling Interest [Line Items]
Parent company ownership in redeemable noncontrolling interest			26.30%	26.50%	26.30%	26.50%	23.40%	26.30%	23.40%	26.50%
Redemption of shares from redeemable noncontrolling interest			$ 813	$ 866	$ 208,711	$ 219,745
DaVinciRe Holdings Ltd. | Redeemable Noncontrolling Interest
Redeemable Noncontrolling Interest [Line Items]
Redeemable noncontrolling interest, net redemptions	$ 225,000	$ 300,000
Redeemable noncontrolling interest, reserve holdback	$ 22,500	$ 30,000
Proceeds from sale of partial interest in consolidated subsidiary									$ 38,900
DaVinciRe Holdings Ltd. | Redeemable Noncontrolling Interest | Maximum
Redeemable Noncontrolling Interest [Line Items]
Share repurchase requests, limit			25.00%		25.00%
Medici
Redeemable Noncontrolling Interest [Line Items]
Parent company ownership in redeemable noncontrolling interest			46.50%		46.50%		53.20%
Redemption provision, notice period					30 days
Subscription from redeemable noncontrolling interest			$ 11,450	1,699	$ 31,093	57,084	$ 57,300
Redemption of shares from redeemable noncontrolling interest			$ 2,423	$ 0	$ 17,107	$ 1,875	$ 3,100

Noncontrolling Interests (Sched

Noncontrolling Interests (Schedule Of Redeemable Noncontrolling Interest) (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended		12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Mar. 31, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Activity in redeemable noncontrolling interest
Beginning balance				$ 1,131,708
Net income attributable to redeemable noncontrolling interest	$ 12,167	$ 36,078		51,829	$ 78,846
Ending balance	988,812			988,812		$ 1,131,708
DaVinciRe Holdings Ltd.
Activity in redeemable noncontrolling interest
Beginning balance	867,734	895,391	$ 1,063,368	1,037,306	1,063,368	1,063,368
Redemption of shares from redeemable noncontrolling interest	(813)	(866)		(208,711)	(219,745)
Sale of shares to redeemable noncontrolling interests	0	0		0	9,722
Net income attributable to redeemable noncontrolling interest	12,345	35,706		50,671	76,886
Ending balance	879,266	930,231	895,391	879,266	930,231	1,037,306
Medici
Activity in redeemable noncontrolling interest
Beginning balance	100,697	91,590	36,492	94,402	36,492	36,492
Redemption of shares from redeemable noncontrolling interest	(2,423)	0		(17,107)	(1,875)	(3,100)
Net income attributable to redeemable noncontrolling interest	(178)	372		1,158	1,960
Ending balance	$ 109,546	$ 93,661	$ 91,590	$ 109,546	$ 93,661	$ 94,402

Variable Interest Entities (Det

Variable Interest Entities (Details) - USD ($) $ in Thousands	Nov. 13, 2014	Jun. 30, 2015	Jun. 30, 2014	Mar. 31, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Variable Interest Entity [Line Items]
Assets		$ 12,053,186			$ 12,053,186		$ 8,203,550
Liabilities		6,227,430			6,227,430		3,206,127
Other liabilities		228,554			228,554		374,108
Gross premiums written		661,997	$ 511,540		1,305,575	$ 1,216,800
Ceded premiums earned		110,150	$ 104,922		$ 218,894	218,215
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%
Upsilon RFO | Variable Interest Entity, Primary Beneficiary
Variable Interest Entity [Line Items]
Variable interest entity, ownership percentage			23.90%	38.90%	20.50%
Increase (decrease) in funds held under insurance agreements			$ 5,000	$ 15,000
Risk participation percentage			15.00%	33.60%
Total amount of capital agreed to be returned							419,400
Return of capital to date					$ 418,500
Assets		261,900			261,900		621,300
Liabilities		261,900			261,900		621,300
Other liabilities							135,700
Upsilon RFO | Variable Interest Entity, Primary Beneficiary | RenaissanceRe Holdings Ltd.
Variable Interest Entity [Line Items]
Total amount of capital agreed to be returned							131,400
Return of capital to date					131,100
Upsilon RFO | Variable Interest Entity, Primary Beneficiary | Non-Voting Preference Shares
Variable Interest Entity [Line Items]
Issuance of equity to third party investors			$ 43,100	$ 172,400	155,400
Contributions to subsidiaries			$ 13,500	$ 109,700	42,200
Mona Lisa Re Ltd | Renaissance Reinsurance Ltd.
Variable Interest Entity [Line Items]
Gross premiums written					600	2,000
Ceded premiums earned					3,600	5,000
Mona Lisa Re Ltd | DaVinciRe Holdings Ltd.
Variable Interest Entity [Line Items]
Gross premiums written					500	1,900
Ceded premiums earned					2,500	$ 3,600
Mona Lisa Re Ltd | Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Assets		179,000			179,000		184,000
Liabilities		$ 179,000			$ 179,000		$ 184,000

Shareholders' Equity (Details)

Shareholders' Equity (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	Jun. 30, 2015	Jun. 15, 2015	Mar. 31, 2015	Mar. 13, 2015	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Class of Stock [Line Items]
Dividends declared per common share, in usd per share					$ 0.3	$ 0.29	$ 0.6	$ 0.58
Dividends declared and paid, Preference shares					$ 5,596	$ 5,596	$ 11,191	$ 11,191
Retained Earnings
Class of Stock [Line Items]
Dividends declared and paid, Preference shares							11,191	11,191
Dividends declared and paid, Common shares							27,479	23,550
Common shares repurchased during period, Aggregate amount							$ 0	$ 313,312
Common Shares
Class of Stock [Line Items]
Dividends declared per common share, in usd per share		$ 0.3		$ 0.30
Dividends per common share, in usd per share	$ 0.3		$ 0.3
Common shares repurchased during period, Number of shares							83
Common shares repurchased during period, Aggregate amount							$ 8,400
Common shares repurchased during period, Average cost per share							$ 101.99
Share repurchase program, Remaining authorized aggregate amount	$ 491,900				$ 491,900		$ 491,900

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		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Numerator:
Net income available to RenaissanceRe common shareholders	$ 73,233	$ 120,752	$ 241,076	$ 271,755
Amount allocated to participating common shareholders	(819)	(1,557)	(2,781)	(3,577)
Net income allocated to RenaissanceRe common shareholders	$ 72,414	$ 119,195	$ 238,295	$ 268,178
Denominator:
Denominator for basic income per RenaissanceRe common share - weighted average common shares	45,303	39,736	42,467	40,487
Per common share equivalents of employee stock options and restricted shares	354	659	372	662
Denominator for diluted income per RenaissanceRe common share - adjusted weighted average common shares and assumed conversions	45,657	40,395	42,839	41,149
Net income available to RenaissanceRe common shareholders per common share – basic (in usd per share)	$ 1.60	$ 3	$ 5.61	$ 6.62
Net income available to RenaissanceRe common shareholders per common share – diluted (in usd per share)	$ 1.59	$ 2.95	$ 5.56	$ 6.52

Segment Reporting (Schedule Of

Segment Reporting (Schedule Of Significant Components Of The Company's Revenues And Expenses) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Segment Reporting Information [Line Items]
Gross premiums written	$ 661,997	$ 511,540	$ 1,305,575	$ 1,216,800
Net premiums written	508,677	346,407	912,712	796,754
Net premiums earned	379,828	260,416	676,588	546,950
Net claims and claim expenses incurred	169,344	81,388	246,197	140,303
Acquisition expenses	61,666	33,477	105,067	67,177
Operational expenses	54,673	45,841	100,294	88,465
Underwriting income (loss)	94,145	99,710	225,030	251,005
Net investment income	38,604	34,541	78,311	73,489
Net foreign exchange (losses) gains	(1,740)	2,392	(4,870)	1,331
Equity in earnings of other ventures	6,160	7,232	11,455	11,431
Other income (loss)	1,427	(535)	2,966	(473)
Net realized and unrealized (losses) gains on investments	(26,712)	27,128	15,037	42,055
Corporate expenses	(13,032)	(3,954)	(58,630)	(8,499)
Interest expense	(9,698)	(4,292)	(14,949)	(8,585)
Income before taxes	89,154	162,222	254,350	361,754
Income tax (expense) benefit	1,842	204	49,746	38
Net income attributable to noncontrolling interests	(12,167)	(36,078)	(51,829)	(78,846)
Dividends on preference shares	(5,596)	(5,596)	(11,191)	(11,191)
Net income available to RenaissanceRe common shareholders	73,233	120,752	241,076	271,755
Net claims and claim expenses incurred – current accident year	202,420	98,471	301,418	174,079
Net claims and claim expenses incurred – prior accident years	(33,076)	(17,083)	(55,221)	(33,776)
Net claims and claim expenses incurred – total	$ 169,344	$ 81,388	$ 246,197	$ 140,303
Net claims and claim expense ratio – current accident year	53.30%	37.80%	44.50%	31.80%
Net claims and claim expense ratio – prior accident years	(8.70%)	(6.50%)	(8.10%)	(6.10%)
Net claims and claim expense ratio – calendar year	44.60%	31.30%	36.40%	25.70%
Underwriting expense ratio	30.60%	30.40%	30.30%	28.40%
Combined ratio	75.20%	61.70%	66.70%	54.10%
Intersegment Eliminations
Segment Reporting Information [Line Items]
Gross premiums written			$ (100)
Catastrophe Reinsurance
Segment Reporting Information [Line Items]
Gross premiums written	$ 385,366	$ 388,083	774,613	$ 855,794
Net premiums written	270,490	233,698	493,130	493,187
Net premiums earned	162,705	159,152	306,472	323,736
Net claims and claim expenses incurred	55,376	36,730	62,970	43,185
Acquisition expenses	19,314	17,806	26,968	24,932
Operational expenses	22,090	22,200	42,453	42,619
Underwriting income (loss)	65,925	82,416	174,081	213,000
Net claims and claim expenses incurred – current accident year	67,334	38,473	91,458	51,002
Net claims and claim expenses incurred – prior accident years	(11,958)	(1,743)	(28,488)	(7,817)
Net claims and claim expenses incurred – total	$ 55,376	$ 36,730	$ 62,970	$ 43,185
Net claims and claim expense ratio – current accident year	41.40%	24.20%	29.80%	15.80%
Net claims and claim expense ratio – prior accident years	(7.40%)	(1.10%)	(9.30%)	(2.50%)
Net claims and claim expense ratio – calendar year	34.00%	23.10%	20.50%	13.30%
Underwriting expense ratio	25.50%	25.10%	22.70%	20.90%
Combined ratio	59.50%	48.20%	43.20%	34.20%
Specialty Reinsurance
Segment Reporting Information [Line Items]
Gross premiums written	$ 160,013	$ 51,554	$ 284,304	$ 205,844
Net premiums written	139,867	46,254	243,782	171,743
Net premiums earned	155,584	53,588	250,460	123,218
Net claims and claim expenses incurred	86,062	20,075	125,650	46,156
Acquisition expenses	28,251	11,699	48,940	28,246
Operational expenses	18,747	10,514	32,037	20,620
Underwriting income (loss)	22,524	11,300	43,833	28,196
Net claims and claim expenses incurred – current accident year	104,315	25,443	153,579	67,365
Net claims and claim expenses incurred – prior accident years	(18,253)	(5,368)	(27,929)	(21,209)
Net claims and claim expenses incurred – total	$ 86,062	$ 20,075	$ 125,650	$ 46,156
Net claims and claim expense ratio – current accident year	67.00%	47.50%	61.30%	54.70%
Net claims and claim expense ratio – prior accident years	(11.70%)	(10.00%)	(11.10%)	(17.20%)
Net claims and claim expense ratio – calendar year	55.30%	37.50%	50.20%	37.50%
Underwriting expense ratio	30.20%	41.40%	32.30%	39.60%
Combined ratio	85.50%	78.90%	82.50%	77.10%
Lloyd's
Segment Reporting Information [Line Items]
Gross premiums written	$ 116,618	$ 71,903	$ 246,748	$ 155,162
Net premiums written	98,320	66,452	175,889	131,821
Net premiums earned	61,539	47,672	119,745	99,969
Net claims and claim expenses incurred	27,683	25,111	57,526	51,392
Acquisition expenses	14,210	10,122	28,903	20,689
Operational expenses	13,719	13,058	25,659	25,091
Underwriting income (loss)	5,927	(619)	7,657	2,797
Net claims and claim expenses incurred – current accident year	30,771	34,555	56,381	55,712
Net claims and claim expenses incurred – prior accident years	(3,088)	(9,444)	1,145	(4,320)
Net claims and claim expenses incurred – total	$ 27,683	$ 25,111	$ 57,526	$ 51,392
Net claims and claim expense ratio – current accident year	50.00%	72.50%	47.10%	55.70%
Net claims and claim expense ratio – prior accident years	(5.00%)	(19.80%)	0.90%	(4.30%)
Net claims and claim expense ratio – calendar year	45.00%	52.70%	48.00%	51.40%
Underwriting expense ratio	45.40%	48.60%	45.60%	45.80%
Combined ratio	90.40%	101.30%	93.60%	97.20%
Other
Segment Reporting Information [Line Items]
Gross premiums written	$ 0	$ 0	$ (90)	$ 0
Net premiums written	0	3	(89)	3
Net premiums earned	0	4	(89)	27
Net claims and claim expenses incurred	223	(528)	51	(430)
Acquisition expenses	(109)	(6,150)	256	(6,690)
Operational expenses	117	69	145	135
Underwriting income (loss)	(231)	6,613	(541)	7,012
Net investment income	38,604	34,541	78,311	73,489
Net foreign exchange (losses) gains	(1,740)	2,392	(4,870)	1,331
Equity in earnings of other ventures	6,160	7,232	11,455	11,431
Other income (loss)	1,427	(535)	2,966	(473)
Net realized and unrealized (losses) gains on investments	(26,712)	27,128	15,037	42,055
Corporate expenses	(13,032)	(3,954)	(58,630)	(8,499)
Interest expense	(9,698)	(4,292)	(14,949)	(8,585)
Income tax (expense) benefit	1,842	204	49,746	38
Net income attributable to noncontrolling interests	(12,167)	(36,078)	(51,829)	(78,846)
Dividends on preference shares	(5,596)	(5,596)	(11,191)	(11,191)
Net claims and claim expenses incurred – current accident year	0	0	0	0
Net claims and claim expenses incurred – prior accident years	223	(528)	51	(430)
Net claims and claim expenses incurred – total	$ 223	$ (528)	$ 51	$ (430)
Net claims and claim expense ratio – current accident year	0.00%	0.00%	0.00%	0.00%
Net claims and claim expense ratio – prior accident years	0.00%	(13200.00%)	(57.30%)	(1592.60%)
Net claims and claim expense ratio – calendar year	0.00%	(13200.00%)	(57.30%)	(1592.60%)
Underwriting expense ratio	0.00%	(152025.00%)	(450.60%)	(24277.80%)
Combined ratio	0.00%	(165225.00%)	(507.90%)	(25870.40%)

Derivative Instruments (Narrati

Derivative Instruments (Narrative) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014
Other Assets
Derivative [Line Items]
Derivative Asset	$ 1,911	$ 7,694
Interest Rate Contracts | Other Assets
Derivative [Line Items]
Derivative Asset	106	0
Interest Rate Contracts | Long
Derivative [Line Items]
Derivative, Notional Amount	1,355,900	587,000
Interest Rate Contracts | Short
Derivative [Line Items]
Derivative, Notional Amount	1,414,000	617,400
Foreign Currency Forward Contracts, Underwriting and Non-investment Operations | Other Assets
Derivative [Line Items]
Derivative Asset	1,020	4,003
Foreign Currency Forward Contracts, Underwriting and Non-investment Operations | Long
Derivative [Line Items]
Derivative, Notional Amount	162,400	144,800
Foreign Currency Forward Contracts, Underwriting and Non-investment Operations | Short
Derivative [Line Items]
Derivative, Notional Amount	126,200	121,600
Foreign Currency Forward Contracts, Investment Operations | Other Assets
Derivative [Line Items]
Derivative Asset	646	3,311
Foreign Currency Forward Contracts, Investment Operations | Long
Derivative [Line Items]
Derivative, Notional Amount	32,200	35,800
Foreign Currency Forward Contracts, Investment Operations | Short
Derivative [Line Items]
Derivative, Notional Amount	127,300	150,100
Credit Default Swaps | Other Assets
Derivative [Line Items]
Derivative Asset	139	380
Credit Default Swaps | Long
Derivative [Line Items]
Derivative, Notional Amount	0	4,600
Credit Default Swaps | Short
Derivative [Line Items]
Derivative, Notional Amount	32,700	19,400
Weather contract | Short
Derivative [Line Items]
Derivative, Notional Amount	$ 2,100	$ 2,200
Call Rights | Other Assets
Derivative [Line Items]
Derivative Asset			$ 2,220

Derivative Instruments (Consoli

Derivative Instruments (Consolidated Balance Sheets And Fair Value Of The Principal Derivative Instruments) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Other Assets
Derivative Assets
Gross Amounts of Recognized Assets	$ 3,079	$ 10,635
Gross Amounts Offset in the Balance Sheet	1,168	2,941
Net Amounts of Assets Presented in the Balance Sheet	1,911	7,694
Collateral	60	310
Net Amount	1,851	7,384
Other Assets | Interest Rate Contracts
Derivative Assets
Gross Amounts of Recognized Assets	849	468
Gross Amounts Offset in the Balance Sheet	743	468
Net Amounts of Assets Presented in the Balance Sheet	106	0
Collateral	0	0
Net Amount	106	0
Other Assets | Foreign Currency Forward Contracts, Underwriting and Non-investment Operations
Derivative Assets
Gross Amounts of Recognized Assets	1,153	5,740
Gross Amounts Offset in the Balance Sheet	133	1,737
Net Amounts of Assets Presented in the Balance Sheet	1,020	4,003
Collateral	0	0
Net Amount	1,020	4,003
Other Assets | Foreign Currency Forward Contracts, Investment Operations
Derivative Assets
Gross Amounts of Recognized Assets	803	3,959
Gross Amounts Offset in the Balance Sheet	157	648
Net Amounts of Assets Presented in the Balance Sheet	646	3,311
Collateral	0	0
Net Amount	646	3,311
Other Assets | Credit Default Swaps
Derivative Assets
Gross Amounts of Recognized Assets	274	468
Gross Amounts Offset in the Balance Sheet	135	88
Net Amounts of Assets Presented in the Balance Sheet	139	380
Collateral	60	310
Net Amount	79	70
Other Liabilities
Derivative Liabilities
Gross Amounts of Recognized Liabilities	8,045	3,521
Derivative Liability, Collateral, Right to Reclaim Cash, Offset	2,052	2,172
Net Amounts of Liabilities Presented in the Balance Sheet	5,993	1,349
Collateral	143	759
Net Amount	5,850	590
Other Liabilities | Interest Rate Contracts
Derivative Liabilities
Gross Amounts of Recognized Liabilities	872	1,037
Derivative Liability, Collateral, Right to Reclaim Cash, Offset	743	468
Net Amounts of Liabilities Presented in the Balance Sheet	129	569
Collateral	129	569
Net Amount	0	0
Other Liabilities | Foreign Currency Forward Contracts, Underwriting and Non-investment Operations
Derivative Liabilities
Gross Amounts of Recognized Liabilities	6,589	1,319
Derivative Liability, Collateral, Right to Reclaim Cash, Offset	1,017	967
Net Amounts of Liabilities Presented in the Balance Sheet	5,572	352
Collateral	0	0
Net Amount	5,572	352
Other Liabilities | Foreign Currency Forward Contracts, Investment Operations
Derivative Liabilities
Gross Amounts of Recognized Liabilities	320	724
Derivative Liability, Collateral, Right to Reclaim Cash, Offset	157	649
Net Amounts of Liabilities Presented in the Balance Sheet	163	75
Collateral	0	0
Net Amount	163	75
Other Liabilities | Credit Default Swaps
Derivative Liabilities
Gross Amounts of Recognized Liabilities	250	251
Derivative Liability, Collateral, Right to Reclaim Cash, Offset	135	88
Net Amounts of Liabilities Presented in the Balance Sheet	115	163
Collateral	0	0
Net Amount	115	163
Other Liabilities | Weather contract
Derivative Liabilities
Gross Amounts of Recognized Liabilities	14	190
Derivative Liability, Collateral, Right to Reclaim Cash, Offset	0	0
Net Amounts of Liabilities Presented in the Balance Sheet	14	190
Collateral	14	190
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) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized on derivatives	$ 6,189	$ (6,596)	$ 14,802	$ (14,795)
Net realized and unrealized (losses) gains on investments | Interest Rate Contracts
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized on derivatives	19,784	(7,362)	15,376	(19,636)
Net realized and unrealized (losses) gains on investments | Credit Default Swaps
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized on derivatives	22	299	62	458
Net realized and unrealized (losses) gains on investments | Weather contract
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized on derivatives	10	179	170	1,395
Other income (loss) | Call Rights
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized on derivatives	0	2,220	0	2,220
Net foreign exchange (losses) gains | Foreign Currency Forward Contracts, Underwriting and Non-investment Operations
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized on derivatives	(10,210)	(1,990)	(6,599)	2,109
Net foreign exchange (losses) gains | Foreign Currency Forward Contracts, Investment Operations
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized on derivatives	$ (3,417)	$ 58	$ 5,793	$ (1,341)

Commitments, Contingencies an72

Commitments, Contingencies and Other Items (Details) $ in Millions	Jun. 30, 2015USD ($)
Reduction in Taxes
Gain Contingencies [Line Items]
Gain contingency, estimated amount	$ 8.5

Condensed Consolidating Finan73

Condensed Consolidating Financial Information Provided In Connection With Outstanding Debt Of Subsidiaries (Condensed Consolidating Balance Sheet) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014	Dec. 31, 2013
Assets
Total investments	$ 9,280,267	$ 6,743,750
Cash and cash equivalents	398,090	525,584	$ 294,457	$ 408,032
Investments in subsidiaries	0	0
Due from subsidiaries and affiliates	0	0
Premiums receivable	1,068,819	440,007
Prepaid reinsurance premiums	276,231	94,810
Reinsurance recoverable	136,464	66,694
Accrued investment income	37,480	26,509
Deferred acquisition costs	173,408	110,059
Receivable for investments sold	149,063	52,390
Other assets	257,621	135,845
Goodwill and other intangible assets	275,743	7,902
Total assets	12,053,186	8,203,550
Liabilities
Reserve for claims and claim expenses	2,847,648	1,412,510
Unearned premiums	1,155,596	512,386
Debt	972,362	249,522
Amounts due to subsidiaries and affiliates	0	0
Reinsurance balances payable	512,019	454,580
Payable for investments purchased	511,251	203,021
Other liabilities	228,554	374,108
Total liabilities	6,227,430	3,206,127
Redeemable noncontrolling interests	988,812	1,131,708
Shareholders' Equity
Total shareholders’ equity	4,836,944	3,865,715
Total liabilities, noncontrolling interests and shareholders’ equity	12,053,186	8,203,550
RenaissanceRe Holdings Ltd. (Parent Guarantor)
Assets
Total investments	182,375	137,006
Cash and cash equivalents	2,535	5,986	3,194	8,796
Investments in subsidiaries	4,550,601	3,509,974
Due from subsidiaries and affiliates	79,807	126,548
Premiums receivable	0	0
Prepaid reinsurance premiums	0	0
Reinsurance recoverable	0	0
Accrued investment income	462	0
Deferred acquisition costs	0	0
Receivable for investments sold	56	10
Other assets	20,921	112,400
Goodwill and other intangible assets	267,945	0
Total assets	5,104,702	3,891,924
Liabilities
Reserve for claims and claim expenses	0	0
Unearned premiums	0	0
Debt	117,000	0
Amounts due to subsidiaries and affiliates	60,202	6,000
Reinsurance balances payable	0	0
Payable for investments purchased	2,979	0
Other liabilities	87,577	20,209
Total liabilities	267,758	26,209
Redeemable noncontrolling interests	0	0
Shareholders' Equity
Total shareholders’ equity	4,836,944	3,865,715
Total liabilities, noncontrolling interests and shareholders’ equity	5,104,702	3,891,924
Platinum Underwriters Holdings, Ltd.
Assets
Total investments	0
Cash and cash equivalents	9,181	0
Investments in subsidiaries	648,991
Due from subsidiaries and affiliates	27,612
Premiums receivable	0
Prepaid reinsurance premiums	0
Reinsurance recoverable	0
Accrued investment income	0
Deferred acquisition costs	0
Receivable for investments sold	0
Other assets	0
Goodwill and other intangible assets	0
Total assets	685,784
Liabilities
Reserve for claims and claim expenses	0
Unearned premiums	0
Debt	0
Amounts due to subsidiaries and affiliates	1,872
Reinsurance balances payable	0
Payable for investments purchased	0
Other liabilities	336
Total liabilities	2,208
Redeemable noncontrolling interests	0
Shareholders' Equity
Total shareholders’ equity	683,576
Total liabilities, noncontrolling interests and shareholders’ equity	685,784
RenRe North America Holdings Inc.
Assets
Total investments	88,177	88,150
Cash and cash equivalents	2,146	1,033	3,211	4,027
Investments in subsidiaries	258,980	71,796
Due from subsidiaries and affiliates	15	23
Premiums receivable	0	0
Prepaid reinsurance premiums	0	0
Reinsurance recoverable	0	0
Accrued investment income	173	121
Deferred acquisition costs	0	0
Receivable for investments sold	21	0
Other assets	32,250	1,242
Goodwill and other intangible assets	0	0
Total assets	381,762	162,365
Liabilities
Reserve for claims and claim expenses	0	0
Unearned premiums	0	0
Debt	249,568	249,522
Amounts due to subsidiaries and affiliates	218	233
Reinsurance balances payable	0	0
Payable for investments purchased	38	0
Other liabilities	2,380	4,013
Total liabilities	252,204	253,768
Redeemable noncontrolling interests	0	0
Shareholders' Equity
Total shareholders’ equity	129,558	(91,403)
Total liabilities, noncontrolling interests and shareholders’ equity	381,762	162,365
Platinum Underwriters Finance, Inc.
Assets
Total investments	282,027
Cash and cash equivalents	1,089	0
Investments in subsidiaries	611,580
Due from subsidiaries and affiliates	0
Premiums receivable	0
Prepaid reinsurance premiums	0
Reinsurance recoverable	0
Accrued investment income	307
Deferred acquisition costs	0
Receivable for investments sold	151
Other assets	3,125
Goodwill and other intangible assets	0
Total assets	898,279
Liabilities
Reserve for claims and claim expenses	0
Unearned premiums	0
Debt	250,000
Amounts due to subsidiaries and affiliates	23
Reinsurance balances payable	0
Payable for investments purchased	233
Other liabilities	0
Total liabilities	250,256
Redeemable noncontrolling interests	0
Shareholders' Equity
Total shareholders’ equity	648,023
Total liabilities, noncontrolling interests and shareholders’ equity	898,279
RenaissanceRe Finance, Inc.
Assets
Total investments	0
Cash and cash equivalents	224	0
Investments in subsidiaries	828,023
Due from subsidiaries and affiliates	0
Premiums receivable	0
Prepaid reinsurance premiums	0
Reinsurance recoverable	0
Accrued investment income	0
Deferred acquisition costs	0
Receivable for investments sold	0
Other assets	121,323
Goodwill and other intangible assets	0
Total assets	949,570
Liabilities
Reserve for claims and claim expenses	0
Unearned premiums	0
Debt	299,415
Amounts due to subsidiaries and affiliates	407
Reinsurance balances payable	0
Payable for investments purchased	0
Other liabilities	3,357
Total liabilities	303,179
Redeemable noncontrolling interests	0
Shareholders' Equity
Total shareholders’ equity	646,391
Total liabilities, noncontrolling interests and shareholders’ equity	949,570
Other RenaissanceRe Holdings Ltd. Subsidiaries And Eliminations (Non-Guarantor Subsidiaries)
Assets
Total investments	8,727,688	6,518,594
Cash and cash equivalents	382,915	518,565	$ 288,052	$ 395,209
Investments in subsidiaries	0	0
Due from subsidiaries and affiliates	0	0
Premiums receivable	1,068,819	440,007
Prepaid reinsurance premiums	276,231	94,810
Reinsurance recoverable	136,464	66,694
Accrued investment income	36,538	26,388
Deferred acquisition costs	195,291	110,059
Receivable for investments sold	148,835	52,380
Other assets	198,964	123,661
Goodwill and other intangible assets	7,798	7,902
Total assets	11,179,543	7,959,060
Liabilities
Reserve for claims and claim expenses	2,828,161	1,412,510
Unearned premiums	1,155,596	512,386
Debt	148,761	0
Amounts due to subsidiaries and affiliates	0	0
Reinsurance balances payable	512,019	454,580
Payable for investments purchased	508,001	203,021
Other liabilities	202,854	351,344
Total liabilities	5,355,392	2,933,841
Redeemable noncontrolling interests	988,812	1,131,708
Shareholders' Equity
Total shareholders’ equity	4,835,339	3,893,511
Total liabilities, noncontrolling interests and shareholders’ equity	11,179,543	7,959,060
Consolidating Adjustments
Assets
Total investments	0	0
Cash and cash equivalents	0	0
Investments in subsidiaries	(6,898,175)	(3,581,770)
Due from subsidiaries and affiliates	(107,434)	(126,571)
Premiums receivable	0	0
Prepaid reinsurance premiums	0	0
Reinsurance recoverable	0	0
Accrued investment income	0	0
Deferred acquisition costs	(21,883)	0
Receivable for investments sold	0	0
Other assets	(118,962)	(101,458)
Goodwill and other intangible assets	0	0
Total assets	(7,146,454)	(3,809,799)
Liabilities
Reserve for claims and claim expenses	19,487	0
Unearned premiums	0	0
Debt	(92,382)	0
Amounts due to subsidiaries and affiliates	(62,722)	(6,233)
Reinsurance balances payable	0	0
Payable for investments purchased	0	0
Other liabilities	(67,950)	(1,458)
Total liabilities	(203,567)	(7,691)
Redeemable noncontrolling interests	0	0
Shareholders' Equity
Total shareholders’ equity	(6,942,887)	(3,802,108)
Total liabilities, noncontrolling interests and shareholders’ equity	$ (7,146,454)	$ (3,809,799)

Condensed Consolidating Finan74

Condensed Consolidating Financial Information Provided In Connection With Outstanding Debt Of Subsidiaries (Condensed Consolidating Statement Of Operations) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Revenues
Net premiums earned	$ 379,828	$ 260,416	$ 676,588	$ 546,950
Net investment income	38,604	34,541	78,311	73,489
Net foreign exchange (losses) gains	(1,740)	2,392	(4,870)	1,331
Equity in earnings of other ventures	6,160	7,232	11,455	11,431
Other income (loss)	1,427	(535)	2,966	(473)
Net realized and unrealized gains (losses) on investments	(26,712)	27,128	15,037	42,055
Total revenues	397,567	331,174	779,487	674,783
Expenses
Net claims and claim expenses incurred	169,344	81,388	246,197	140,303
Acquisition expenses	61,666	33,477	105,067	67,177
Operational expenses	54,673	45,841	100,294	88,465
Corporate expenses	13,032	3,954	58,630	8,499
Interest expense	9,698	4,292	14,949	8,585
Total expenses	308,413	168,952	525,137	313,029
(Loss) income before equity in net income (loss) of subsidiaries and taxes	89,154	162,222	254,350	361,754
Equity in net income (loss) of subsidiaries	0	0	0	0
Income before taxes	89,154	162,222	254,350	361,754
Income tax (expense) benefit	1,842	204	49,746	38
Net income	90,996	162,426	304,096	361,792
Net income attributable to noncontrolling interests	(12,167)	(36,078)	(51,829)	(78,846)
Net income attributable to RenaissanceRe	78,829	126,348	252,267	282,946
Dividends on preference shares	(5,596)	(5,596)	(11,191)	(11,191)
Net income available to RenaissanceRe common shareholders	73,233	120,752	241,076	271,755
RenaissanceRe Holdings Ltd. (Parent Guarantor)
Revenues
Net premiums earned	0	0	0	0
Net investment income	98	736	2,722	1,361
Net foreign exchange (losses) gains	12	6	2	7
Equity in earnings of other ventures	0	0	0	0
Other income (loss)	15,692	0	21,881	0
Net realized and unrealized gains (losses) on investments	(535)	190	(496)	84
Total revenues	15,267	932	24,109	1,452
Expenses
Net claims and claim expenses incurred	0	0	0	0
Acquisition expenses	0	0	0	0
Operational expenses	(1,300)	(1,236)	(2,478)	(2,116)
Corporate expenses	6,373	3,468	22,677	7,470
Interest expense	468	0	763	0
Total expenses	5,541	2,232	20,962	5,354
(Loss) income before equity in net income (loss) of subsidiaries and taxes	9,726	(1,300)	3,147	(3,902)
Equity in net income (loss) of subsidiaries	72,555	127,648	256,235	286,848
Income before taxes	82,281	126,348	259,382	282,946
Income tax (expense) benefit	(3,452)	0	(7,115)	0
Net income	78,829	126,348	252,267	282,946
Net income attributable to noncontrolling interests	0	0	0	0
Net income attributable to RenaissanceRe	78,829	126,348	252,267	282,946
Dividends on preference shares	(5,596)	(5,596)	(11,191)	(11,191)
Net income available to RenaissanceRe common shareholders	73,233	120,752	241,076	271,755
Platinum Underwriters Holdings, Ltd.
Revenues
Net premiums earned	0		0
Net investment income	0		0
Net foreign exchange (losses) gains	0		0
Equity in earnings of other ventures	0		0
Other income (loss)	497		663
Net realized and unrealized gains (losses) on investments	0		0
Total revenues	497		663
Expenses
Net claims and claim expenses incurred	0		0
Acquisition expenses	0		0
Operational expenses	932		5,919
Corporate expenses	980		9,162
Interest expense	0		0
Total expenses	1,912		15,081
(Loss) income before equity in net income (loss) of subsidiaries and taxes	(1,415)		(14,418)
Equity in net income (loss) of subsidiaries	(805)		(7,362)
Income before taxes	(2,220)		(21,780)
Income tax (expense) benefit	0		0
Net income	(2,220)		(21,780)
Net income attributable to noncontrolling interests	0		0
Net income attributable to RenaissanceRe	(2,220)		(21,780)
Dividends on preference shares	0		0
Net income available to RenaissanceRe common shareholders	(2,220)		(21,780)
RenRe North America Holdings Inc.
Revenues
Net premiums earned	0	0	0	0
Net investment income	300	445	631	919
Net foreign exchange (losses) gains	0	0	0	0
Equity in earnings of other ventures	0	0	0	0
Other income (loss)	0	0	0	(8)
Net realized and unrealized gains (losses) on investments	609	4,340	1,015	4,717
Total revenues	909	4,785	1,646	5,628
Expenses
Net claims and claim expenses incurred	0	0	0	0
Acquisition expenses	0	0	0	0
Operational expenses	1,588	1,684	3,478	3,578
Corporate expenses	153	59	251	118
Interest expense	3,616	3,616	7,233	7,233
Total expenses	5,357	5,359	10,962	10,929
(Loss) income before equity in net income (loss) of subsidiaries and taxes	(4,448)	(574)	(9,316)	(5,301)
Equity in net income (loss) of subsidiaries	127	(38)	17,526	815
Income before taxes	(4,321)	(612)	8,210	(4,486)
Income tax (expense) benefit	1,743	(38)	32,748	646
Net income	(2,578)	(650)	40,958	(3,840)
Net income attributable to noncontrolling interests	0	0	0	0
Net income attributable to RenaissanceRe	(2,578)	(650)	40,958	(3,840)
Dividends on preference shares	0	0	0	0
Net income available to RenaissanceRe common shareholders	(2,578)	(650)	40,958	(3,840)
Platinum Underwriters Finance, Inc.
Revenues
Net premiums earned	0		0
Net investment income	1,221		1,181
Net foreign exchange (losses) gains	0		0
Equity in earnings of other ventures	0		0
Other income (loss)	0		0
Net realized and unrealized gains (losses) on investments	(1,389)		(1,388)
Total revenues	(168)		(207)
Expenses
Net claims and claim expenses incurred	0		0
Acquisition expenses	0		0
Operational expenses	0		1
Corporate expenses	109		144
Interest expense	4,687		6,250
Total expenses	4,796		6,395
(Loss) income before equity in net income (loss) of subsidiaries and taxes	(4,964)		(6,602)
Equity in net income (loss) of subsidiaries	565		(1,581)
Income before taxes	(4,399)		(8,183)
Income tax (expense) benefit	1,956		2,527
Net income	(2,443)		(5,656)
Net income attributable to noncontrolling interests	0		0
Net income attributable to RenaissanceRe	(2,443)		(5,656)
Dividends on preference shares	0		0
Net income available to RenaissanceRe common shareholders	(2,443)		(5,656)
RenaissanceRe Finance, Inc.
Revenues
Net premiums earned	0		0
Net investment income	468		504
Net foreign exchange (losses) gains	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	468		504
Expenses
Net claims and claim expenses incurred	0		0
Acquisition expenses	0		0
Operational expenses	0		0
Corporate expenses	77		84
Interest expense	2,790		3,006
Total expenses	2,867		3,090
(Loss) income before equity in net income (loss) of subsidiaries and taxes	(2,399)		(2,586)
Equity in net income (loss) of subsidiaries	(2,443)		(5,656)
Income before taxes	(4,842)		(8,242)
Income tax (expense) benefit	888		953
Net income	(3,954)		(7,289)
Net income attributable to noncontrolling interests	0		0
Net income attributable to RenaissanceRe	(3,954)		(7,289)
Dividends on preference shares	0		0
Net income available to RenaissanceRe common shareholders	(3,954)		(7,289)
Other RenaissanceRe Holdings Ltd. Subsidiaries And Eliminations (Non-Guarantor Subsidiaries)
Revenues
Net premiums earned	379,828	260,416	676,588	546,950
Net investment income	37,342	34,293	75,072	73,079
Net foreign exchange (losses) gains	(1,752)	2,386	(4,872)	1,324
Equity in earnings of other ventures	6,160	7,232	11,455	11,431
Other income (loss)	431	(535)	1,639	(465)
Net realized and unrealized gains (losses) on investments	(25,397)	22,598	15,906	37,254
Total revenues	396,612	326,390	775,788	669,573
Expenses
Net claims and claim expenses incurred	171,023	81,388	248,435	140,303
Acquisition expenses	73,537	33,477	121,855	67,177
Operational expenses	51,334	45,483	85,849	87,171
Corporate expenses	5,449	427	26,456	911
Interest expense	880	676	1,474	1,352
Total expenses	302,223	161,451	484,069	296,914
(Loss) income before equity in net income (loss) of subsidiaries and taxes	94,389	164,939	291,719	372,659
Equity in net income (loss) of subsidiaries	(11,916)	0	0	0
Income before taxes	82,473	164,939	291,719	372,659
Income tax (expense) benefit	707	242	20,633	(608)
Net income	83,180	165,181	312,352	372,051
Net income attributable to noncontrolling interests	(12,167)	(36,078)	(51,829)	(78,846)
Net income attributable to RenaissanceRe	71,013	129,103	260,523	293,205
Dividends on preference shares	0	0	0	0
Net income available to RenaissanceRe common shareholders	71,013	129,103	260,523	293,205
Consolidating Adjustments
Revenues
Net premiums earned	0	0	0	0
Net investment income	(825)	(933)	(1,799)	(1,870)
Net foreign exchange (losses) gains	0	0	0	0
Equity in earnings of other ventures	0	0	0	0
Other income (loss)	(15,193)	0	(21,217)	0
Net realized and unrealized gains (losses) on investments	0	0	0	0
Total revenues	(16,018)	(933)	(23,016)	(1,870)
Expenses
Net claims and claim expenses incurred	(1,679)	0	(2,238)	0
Acquisition expenses	(11,871)	0	(16,788)	0
Operational expenses	2,119	(90)	7,525	(168)
Corporate expenses	(109)	0	(144)	0
Interest expense	(2,743)	0	(3,777)	0
Total expenses	(14,283)	(90)	(15,422)	(168)
(Loss) income before equity in net income (loss) of subsidiaries and taxes	(1,735)	(843)	(7,594)	(1,702)
Equity in net income (loss) of subsidiaries	(58,083)	(127,610)	(259,162)	(287,663)
Income before taxes	(59,818)	(128,453)	(266,756)	(289,365)
Income tax (expense) benefit	0	0	0	0
Net income	(59,818)	(128,453)	(266,756)	(289,365)
Net income attributable to noncontrolling interests	0	0	0	0
Net income attributable to RenaissanceRe	(59,818)	(128,453)	(266,756)	(289,365)
Dividends on preference shares	0	0	0	0
Net income available to RenaissanceRe common shareholders	$ (59,818)	$ (128,453)	$ (266,756)	$ (289,365)

Condensed Consolidating Finan75

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		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Condensed Financial Statements, Captions [Line Items]
Net income	$ 90,996	$ 162,426	$ 304,096	$ 361,792
Change in net unrealized gains on investments	(349)	(45)	(423)	(213)
Comprehensive income	90,647	162,381	303,673	361,579
Net income attributable to noncontrolling interests	(12,167)	(36,078)	(51,829)	(78,846)
Comprehensive income attributable to noncontrolling interests	(12,167)	(36,078)	(51,829)	(78,846)
Comprehensive income attributable to RenaissanceRe	78,480	126,303	251,844	282,733
RenaissanceRe Holdings Ltd. (Parent Guarantor)
Condensed Financial Statements, Captions [Line Items]
Net income	78,829	126,348	252,267	282,946
Change in net unrealized gains on investments	0	0	0	0
Comprehensive income	78,829	126,348	252,267	282,946
Net income attributable to noncontrolling interests	0	0	0	0
Comprehensive income attributable to noncontrolling interests	0	0	0	0
Comprehensive income attributable to RenaissanceRe	78,829	126,348	252,267	282,946
Platinum Underwriters Holdings, Ltd.
Condensed Financial Statements, Captions [Line Items]
Net income	(2,220)		(21,780)
Change in net unrealized gains on investments	0		0
Comprehensive income	(2,220)		(21,780)
Net income attributable to noncontrolling interests	0		0
Comprehensive income attributable to noncontrolling interests	0		0
Comprehensive income attributable to RenaissanceRe	(2,220)		(21,780)
RenRe North America Holdings Inc.
Condensed Financial Statements, Captions [Line Items]
Net income	(2,578)	(650)	40,958	(3,840)
Change in net unrealized gains on investments	0	0	0	0
Comprehensive income	(2,578)	(650)	40,958	(3,840)
Net income attributable to noncontrolling interests	0	0	0	0
Comprehensive income attributable to noncontrolling interests	0	0	0	0
Comprehensive income attributable to RenaissanceRe	(2,578)	(650)	40,958	(3,840)
Platinum Underwriters Finance, Inc.
Condensed Financial Statements, Captions [Line Items]
Net income	(2,443)		(5,656)
Change in net unrealized gains on investments	0		0
Comprehensive income	(2,443)		(5,656)
Net income attributable to noncontrolling interests	0		0
Comprehensive income attributable to noncontrolling interests	0		0
Comprehensive income attributable to RenaissanceRe	(2,443)		(5,656)
RenaissanceRe Finance, Inc.
Condensed Financial Statements, Captions [Line Items]
Net income	(3,954)		(7,289)
Change in net unrealized gains on investments	0		0
Comprehensive income	(3,954)		(7,289)
Net income attributable to noncontrolling interests	0		0
Comprehensive income attributable to noncontrolling interests	0		0
Comprehensive income attributable to RenaissanceRe	(3,954)		(7,289)
Other RenaissanceRe Holdings Ltd. Subsidiaries And Eliminations (Non-Guarantor Subsidiaries)
Condensed Financial Statements, Captions [Line Items]
Net income	83,180	165,181	312,352	372,051
Change in net unrealized gains on investments	(349)	(45)	(423)	(213)
Comprehensive income	82,831	165,136	311,929	371,838
Net income attributable to noncontrolling interests	(12,167)	(36,078)	(51,829)	(78,846)
Comprehensive income attributable to noncontrolling interests	(12,167)	(36,078)	(51,829)	(78,846)
Comprehensive income attributable to RenaissanceRe	70,664	129,058	260,100	292,992
Consolidating Adjustments
Condensed Financial Statements, Captions [Line Items]
Net income	(59,818)	(128,453)	(266,756)	(289,365)
Change in net unrealized gains on investments	0	0	0	0
Comprehensive income	(59,818)	(128,453)	(266,756)	(289,365)
Net income attributable to noncontrolling interests	0	0	0	0
Comprehensive income attributable to noncontrolling interests	0	0	0	0
Comprehensive income attributable to RenaissanceRe	$ (59,818)	$ (128,453)	$ (266,756)	$ (289,365)

Condensed Consolidating Finan76

Condensed Consolidating Financial Information Provided In Connection With Outstanding Debt Of Subsidiaries (Condensed Consolidating Statement Of Cash Flows) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Cash flows (used in) provided by operating activities:
Net cash (used in) provided by operating activities	$ (29,370)	$ 173,386
Cash flows (used in) provided by investing activities
Proceeds from sales and maturities of fixed maturity investments trading	4,761,975	4,020,174
Purchases of fixed maturity investments trading	(4,596,118)	(3,970,317)
Proceeds from sales and maturities of fixed maturity investments available for sale	5,000	5,114
Net purchases of equity investments trading	(166,485)	(11,146)
Net sales (purchases) of short term investments	360,162	89,549
Net (purchases) sales of other investments	(1,250)	68,684
Net (purchases) sales of investments in other ventures	(45)	1,030
Net (purchases) sales of other assets	4,500	6,000
Dividends and return of capital from subsidiaries	0	0
Contributions to subsidiaries	0	0
Due (from) to subsidiary	0	0
Net purchase of Platinum	678,152	0
Net cash (used in) provided by investing activities	(310,413)	209,088
Cash flows provided by (used in) financing activities
Dividends paid – RenaissanceRe common shares	(27,479)	(23,550)
Dividends paid – preference shares	(11,191)	(11,191)
RenaissanceRe common share repurchases	(736)	(314,536)
Net issuance (repayment) of debt	445,589	0
Net third party redeemable noncontrolling interest share transactions	(187,064)	(144,096)
Net cash provided by (used in) financing activities	219,119	(493,373)
Effect of exchange rate changes on foreign currency cash	(6,830)	(2,676)
Net decrease in cash and cash equivalents	(127,494)	(113,575)
Cash and cash equivalents, beginning of period	525,584	408,032
Cash and cash equivalents, end of period	398,090	294,457
RenaissanceRe Holdings Ltd. (Parent Guarantor)
Cash flows (used in) provided by operating activities:
Net cash (used in) provided by operating activities	66,113	(14,828)
Cash flows (used in) provided by investing activities
Proceeds from sales and maturities of fixed maturity investments trading	14,718	4,912
Purchases of fixed maturity investments trading	(56,559)	(79,714)
Proceeds from sales and maturities of fixed maturity investments available for sale	0	0
Net purchases of equity investments trading	0	0
Net sales (purchases) of short term investments	(1,088)	116,511
Net (purchases) sales of other investments	0	0
Net (purchases) sales of investments in other ventures	0	0
Net (purchases) sales of other assets	0	0
Dividends and return of capital from subsidiaries	1,009,161	359,891
Contributions to subsidiaries	205,362	47,220
Due (from) to subsidiary	(3,595)	4,123
Net purchase of Platinum	904,433
Net cash (used in) provided by investing activities	(147,158)	358,503
Cash flows provided by (used in) financing activities
Dividends paid – RenaissanceRe common shares	(27,479)	(23,550)
Dividends paid – preference shares	(11,191)	(11,191)
RenaissanceRe common share repurchases	(736)	(314,536)
Net issuance (repayment) of debt	117,000
Net third party redeemable noncontrolling interest share transactions	0	0
Net cash provided by (used in) financing activities	77,594	(349,277)
Effect of exchange rate changes on foreign currency cash	0	0
Net decrease in cash and cash equivalents	(3,451)	(5,602)
Cash and cash equivalents, beginning of period	5,986	8,796
Cash and cash equivalents, end of period	2,535	3,194
Platinum Underwriters Holdings, Ltd.
Cash flows (used in) provided by operating activities:
Net cash (used in) provided by operating activities	(1,326)
Cash flows (used in) provided by investing activities
Proceeds from sales and maturities of fixed maturity investments trading	0
Purchases of fixed maturity investments trading	0
Proceeds from sales and maturities of fixed maturity investments available for sale	0
Net purchases of equity investments trading	0
Net sales (purchases) of short term investments	0
Net (purchases) sales of other investments	0
Net (purchases) sales of investments in other ventures	0
Net (purchases) sales of other assets	0
Dividends and return of capital from subsidiaries	(30,000)
Contributions to subsidiaries	0
Due (from) to subsidiary	(21,913)
Net purchase of Platinum	(62,420)
Net cash (used in) provided by investing activities	10,507
Cash flows provided by (used in) financing activities
Dividends paid – RenaissanceRe common shares	0
Dividends paid – preference shares	0
RenaissanceRe common share repurchases	0
Net issuance (repayment) of debt	0
Net third party redeemable noncontrolling interest share transactions	0
Net cash provided by (used in) financing activities	0
Effect of exchange rate changes on foreign currency cash	0
Net decrease in cash and cash equivalents	9,181
Cash and cash equivalents, beginning of period	0
Cash and cash equivalents, end of period	9,181
RenRe North America Holdings Inc.
Cash flows (used in) provided by operating activities:
Net cash (used in) provided by operating activities	(5,393)	(8,410)
Cash flows (used in) provided by investing activities
Proceeds from sales and maturities of fixed maturity investments trading	7,016	5,353
Purchases of fixed maturity investments trading	(38,668)	0
Proceeds from sales and maturities of fixed maturity investments available for sale	0	0
Net purchases of equity investments trading	33,687	(370)
Net sales (purchases) of short term investments	(5,848)	(68)
Net (purchases) sales of other investments	0	0
Net (purchases) sales of investments in other ventures	0	0
Net (purchases) sales of other assets	0	0
Dividends and return of capital from subsidiaries	0	5,406
Contributions to subsidiaries	(10,342)	1,950
Due (from) to subsidiary	(23)	(777)
Net purchase of Platinum	0
Net cash (used in) provided by investing activities	6,506	7,594
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 provided by (used in) financing activities	0	0
Effect of exchange rate changes on foreign currency cash	0	0
Net decrease in cash and cash equivalents	1,113	(816)
Cash and cash equivalents, beginning of period	1,033	4,027
Cash and cash equivalents, end of period	2,146	3,211
Platinum Underwriters Finance, Inc.
Cash flows (used in) provided by operating activities:
Net cash (used in) provided by operating activities	(10,030)
Cash flows (used in) provided by investing activities
Proceeds from sales and maturities of fixed maturity investments trading	45,087
Purchases of fixed maturity investments trading	0
Proceeds from sales and maturities of fixed maturity investments available for sale	0
Net purchases of equity investments trading	(273,501)
Net sales (purchases) of short term investments	238,048
Net (purchases) sales of other investments	0
Net (purchases) sales of investments in other ventures	0
Net (purchases) sales of other assets	0
Dividends and return of capital from subsidiaries	0
Contributions to subsidiaries	0
Due (from) to subsidiary	(52)
Net purchase of Platinum	(1,537)
Net cash (used in) provided by investing activities	11,119
Cash flows provided by (used in) financing activities
Dividends paid – RenaissanceRe common shares	0
Dividends paid – preference shares	0
RenaissanceRe common share repurchases	0
Net issuance (repayment) of debt	0
Net third party redeemable noncontrolling interest share transactions	0
Net cash provided by (used in) financing activities	0
Effect of exchange rate changes on foreign currency cash	0
Net decrease in cash and cash equivalents	1,089
Cash and cash equivalents, beginning of period	0
Cash and cash equivalents, end of period	1,089
RenaissanceRe Finance, Inc.
Cash flows (used in) provided by operating activities:
Net cash (used in) provided by operating activities	(119,583)
Cash flows (used in) provided by investing activities
Proceeds from sales and maturities of fixed maturity investments trading	0
Purchases of fixed maturity investments trading	0
Proceeds from sales and maturities of fixed maturity investments available for sale	0
Net purchases of equity investments trading	0
Net sales (purchases) of short term investments	0
Net (purchases) sales of other investments	0
Net (purchases) sales of investments in other ventures	0
Net (purchases) sales of other assets	0
Dividends and return of capital from subsidiaries	0
Contributions to subsidiaries	180,000
Due (from) to subsidiary	407
Net purchase of Platinum	0
Net cash (used in) provided by investing activities	(179,593)
Cash flows provided by (used in) financing activities
Dividends paid – RenaissanceRe common shares	0
Dividends paid – preference shares	0
RenaissanceRe common share repurchases	0
Net issuance (repayment) of debt	299,400
Net third party redeemable noncontrolling interest share transactions	0
Net cash provided by (used in) financing activities	299,400
Effect of exchange rate changes on foreign currency cash	0
Net decrease in cash and cash equivalents	224
Cash and cash equivalents, beginning of period	0
Cash and cash equivalents, end of period	224
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	40,849	196,624
Cash flows (used in) provided by investing activities
Proceeds from sales and maturities of fixed maturity investments trading	4,695,154	4,009,909
Purchases of fixed maturity investments trading	(4,500,891)	(3,890,603)
Proceeds from sales and maturities of fixed maturity investments available for sale	5,000	5,114
Net purchases of equity investments trading	73,329	(10,776)
Net sales (purchases) of short term investments	129,050	(26,894)
Net (purchases) sales of other investments	(1,250)	68,684
Net (purchases) sales of investments in other ventures	(45)	1,030
Net (purchases) sales of other assets	4,500	6,000
Dividends and return of capital from subsidiaries	(979,161)	(365,297)
Contributions to subsidiaries	(375,020)	(49,170)
Due (from) to subsidiary	25,176	(3,346)
Net purchase of Platinum	(162,324)
Net cash (used in) provided by investing activities	(11,794)	(157,009)
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	29,189
Net third party redeemable noncontrolling interest share transactions	(187,064)	(144,096)
Net cash provided by (used in) financing activities	(157,875)	(144,096)
Effect of exchange rate changes on foreign currency cash	(6,830)	(2,676)
Net decrease in cash and cash equivalents	(135,650)	(107,157)
Cash and cash equivalents, beginning of period	518,565	395,209
Cash and cash equivalents, end of period	$ 382,915	$ 288,052

Subsequent Events (Details)

Subsequent Events (Details) - USD ($) $ / shares in Units, shares in Thousands	1 Months Ended	6 Months Ended
	Jul. 27, 2015	Jun. 30, 2015	May. 04, 2015
Common Shares
Subsequent Event [Line Items]
Common shares repurchased during period, Number of shares		83
Common shares repurchased during period, Aggregate amount		$ 8,400,000
Common shares repurchased during period, Average cost per share		$ 101.99
Common Shares | Subsequent Event
Subsequent Event [Line Items]
Common shares repurchased during period, Number of shares	67
Common shares repurchased during period, Aggregate amount	$ 6,900,000
Common shares repurchased during period, Average cost per share	$ 102.70
DaVinciRe Holdings Ltd.
Subsequent Event [Line Items]
Related party debt to be repaid			$ 100,000,000
DaVinciRe Holdings Ltd. | 4.750% Senior Notes Due May 1, 2025
Subsequent Event [Line Items]
Debt Instrument, face amount			$ 150,000,000
Senior notes interest rate			4.75%