XML 80 R69.htm IDEA: XBRL DOCUMENT
v3.7.0.1

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, 2017 | Jun. 30, 2016
Cash flows (used in) provided by operating activities |  |
Net cash provided by (used in) operating activities | $ 341,023 | $ 125,241
Cash flows provided by investing activities |  |
Proceeds from sales and maturities of fixed maturity investments trading | 5,163,972 | 4,780,406
Purchases of fixed maturity investments trading | (5,451,362) | (4,984,820)
Proceeds from sales and maturities of fixed maturity investments available for sale | 0 | 5,216
Net sales of equity investments trading | 46,305 | 181,634
Net sales of short term investments | 276,075 | 245,899
Net sales (purchases) of other investments | 2,551 | (52,778)
Dividends and return of capital from subsidiaries | 0 | 0
Contributions to subsidiaries | 0 | 0
Due (from) to subsidiary | 0 | 0
Net cash provided by investing activities | 37,541 | 175,557
Cash flows used in financing activities |  |
Dividends paid – RenaissanceRe common shares | (25,877) | (26,198)
Dividends paid – preference shares | (11,191) | (11,191)
RenaissanceRe common share repurchases | (145,940) | (265,003)
Issuance of debt, net of expenses | 295,866 | 0
Repayment of debt | (250,000) | 0
Net third party redeemable noncontrolling interest share transactions | (33,655) | (43,909)
Taxes paid on withholding shares | (11,251) | (8,069)
Net cash used in financing activities | (182,048) | (354,370)
Effect of exchange rate changes on foreign currency cash | 5,477 | 2,208
Net increase (decrease) in cash and cash equivalents | 201,993 | (51,364)
Cash and cash equivalents, beginning of period | 421,157 | 506,885
Cash and cash equivalents, end of period | 623,150 | 455,521
RenRe North America Holdings Inc. (Subsidiary Issuer) |  |
Cash flows used in financing activities |  |
Repayment of debt | 0 |
Platinum Underwriters Finance, Inc. (Subsidiary Issuer) |  |
Cash flows used in financing activities |  |
Repayment of debt | (250,000) |
RenaissanceRe Finance, Inc. (Subsidiary Issuer) |  |
Cash flows used in financing activities |  |
Repayment of debt | 0 |
RenaissanceRe Holdings Ltd. (Parent Guarantor) |  |
Cash flows used in financing activities |  |
Repayment of debt | 0 |
Other RenaissanceRe Holdings Ltd. Subsidiaries And Eliminations (Non-Guarantor Subsidiaries) |  |
Cash flows used in financing activities |  |
Repayment of debt | 0 |
Reportable Legal Entities | RenRe North America Holdings Inc. (Subsidiary Issuer) |  |
Cash flows (used in) provided by operating activities |  |
Net cash provided by (used in) operating activities | (8,931) | 297
Cash flows provided by investing activities |  |
Proceeds from sales and maturities of fixed maturity investments trading | 46,475 | 50,890
Purchases of fixed maturity investments trading | (45,174) | (105,772)
Proceeds from sales and maturities of fixed maturity investments available for sale |  | 0
Net sales of equity investments trading | (89) | (2,195)
Net sales of short term investments | (1,351) | 62,403
Net sales (purchases) of other investments | 0 | 0
Dividends and return of capital from subsidiaries | 9,175 | 2,900
Contributions to subsidiaries | 0 | 0
Due (from) to subsidiary | 9 | (14,396)
Net cash provided by investing activities | 9,045 | (6,170)
Cash flows used in financing activities |  |
Dividends paid – RenaissanceRe common shares | 0 | 0
Dividends paid – preference shares | 0 | 0
RenaissanceRe common share repurchases | 0 | 0
Issuance of debt, net of expenses | 0 |
Net third party redeemable noncontrolling interest share transactions | 0 | 0
Taxes paid on withholding shares | 0 | 0
Net cash used in financing activities | 0 | 0
Effect of exchange rate changes on foreign currency cash | 0 | 0
Net increase (decrease) in cash and cash equivalents | 114 | (5,873)
Cash and cash equivalents, beginning of period | 162 | 5,908
Cash and cash equivalents, end of period | 276 | 35
Reportable Legal Entities | Platinum Underwriters Finance, Inc. (Subsidiary Issuer) |  |
Cash flows (used in) provided by operating activities |  |
Net cash provided by (used in) operating activities | (5,017) | (3,914)
Cash flows provided by investing activities |  |
Proceeds from sales and maturities of fixed maturity investments trading | 289,741 | 67,839
Purchases of fixed maturity investments trading | (143,991) | (203,883)
Proceeds from sales and maturities of fixed maturity investments available for sale |  | 0
Net sales of equity investments trading | 85,324 | 193,207
Net sales of short term investments | 41,299 | (58,367)
Net sales (purchases) of other investments | 0 | 0
Dividends and return of capital from subsidiaries | 0 | 0
Contributions to subsidiaries | 0 | 0
Due (from) to subsidiary | (41) | (92)
Net cash provided by investing activities | 272,332 | (1,296)
Cash flows used in financing activities |  |
Dividends paid – RenaissanceRe common shares | 0 | 0
Dividends paid – preference shares | 0 | 0
RenaissanceRe common share repurchases | 0 | 0
Issuance of debt, net of expenses | 0 |
Net third party redeemable noncontrolling interest share transactions | 0 | 0
Taxes paid on withholding shares | 0 | 0
Net cash used in financing activities | (250,000) | 0
Effect of exchange rate changes on foreign currency cash | 0 | 0
Net increase (decrease) in cash and cash equivalents | 17,315 | (5,210)
Cash and cash equivalents, beginning of period | 6,671 | 7,103
Cash and cash equivalents, end of period | 23,986 | 1,893
Reportable Legal Entities | RenaissanceRe Finance, Inc. (Subsidiary Issuer) |  |
Cash flows (used in) provided by operating activities |  |
Net cash provided by (used in) operating activities | (27,713) | (24,197)
Cash flows provided by investing activities |  |
Proceeds from sales and maturities of fixed maturity investments trading | 15,449 | 0
Purchases of fixed maturity investments trading | (265,787) | 0
Proceeds from sales and maturities of fixed maturity investments available for sale |  | 0
Net sales of equity investments trading | 0 | 0
Net sales of short term investments | (28,934) | 0
Net sales (purchases) of other investments | 0 | 0
Dividends and return of capital from subsidiaries | 17,975 | 0
Contributions to subsidiaries | (9,175) | 0
Due (from) to subsidiary | 1,278 | 24,134
Net cash provided by investing activities | (269,194) | 24,134
Cash flows used in financing activities |  |
Dividends paid – RenaissanceRe common shares | 0 | 0
Dividends paid – preference shares | 0 | 0
RenaissanceRe common share repurchases | 0 | 0
Issuance of debt, net of expenses | 295,866 |
Net third party redeemable noncontrolling interest share transactions | 0 | 0
Taxes paid on withholding shares | 0 | 0
Net cash used in financing activities | 295,866 | 0
Effect of exchange rate changes on foreign currency cash | 0 | 0
Net increase (decrease) in cash and cash equivalents | (1,041) | (63)
Cash and cash equivalents, beginning of period | 9,397 | 677
Cash and cash equivalents, end of period | 8,356 | 614
Reportable Legal Entities | RenaissanceRe Holdings Ltd. (Parent Guarantor) |  |
Cash flows (used in) provided by operating activities |  |
Net cash provided by (used in) operating activities | (11,924) | (11,131)
Cash flows provided by investing activities |  |
Proceeds from sales and maturities of fixed maturity investments trading | 53,654 | 210,933
Purchases of fixed maturity investments trading | (105,523) | (324,462)
Proceeds from sales and maturities of fixed maturity investments available for sale |  | 0
Net sales of equity investments trading | 0 | 0
Net sales of short term investments | 298,768 | 195,915
Net sales (purchases) of other investments | 0 | 0
Dividends and return of capital from subsidiaries | 167,111 | 341,011
Contributions to subsidiaries | (200,000) | (95,001)
Due (from) to subsidiary | (12,477) | (22,676)
Net cash provided by investing activities | 201,533 | 305,720
Cash flows used in financing activities |  |
Dividends paid – RenaissanceRe common shares | (25,877) | (26,198)
Dividends paid – preference shares | (11,191) | (11,191)
RenaissanceRe common share repurchases | (145,940) | (265,003)
Issuance of debt, net of expenses | 0 |
Net third party redeemable noncontrolling interest share transactions | 0 | 0
Taxes paid on withholding shares | (11,251) | 0
Net cash used in financing activities | (194,259) | (302,392)
Effect of exchange rate changes on foreign currency cash | 0 | 0
Net increase (decrease) in cash and cash equivalents | (4,650) | (7,803)
Cash and cash equivalents, beginning of period | 7,067 | 10,185
Cash and cash equivalents, end of period | 2,417 | 2,382
Reportable Legal Entities | Other RenaissanceRe Holdings Ltd. Subsidiaries And Eliminations (Non-Guarantor Subsidiaries) |  |
Cash flows (used in) provided by operating activities |  |
Net cash provided by (used in) operating activities | 394,608 | 164,186
Cash flows provided by investing activities |  |
Proceeds from sales and maturities of fixed maturity investments trading | 4,758,653 | 4,450,744
Purchases of fixed maturity investments trading | (4,890,887) | (4,350,703)
Proceeds from sales and maturities of fixed maturity investments available for sale |  | 5,216
Net sales of equity investments trading | (38,930) | (9,378)
Net sales of short term investments | (33,707) | 45,948
Net sales (purchases) of other investments | 2,551 | (52,778)
Dividends and return of capital from subsidiaries | (194,261) | (343,911)
Contributions to subsidiaries | 209,175 | 95,001
Due (from) to subsidiary | 11,231 | 13,030
Net cash provided by investing activities | (176,175) | (146,831)
Cash flows used in financing activities |  |
Dividends paid – RenaissanceRe common shares | 0 | 0
Dividends paid – preference shares | 0 | 0
RenaissanceRe common share repurchases | 0 | 0
Issuance of debt, net of expenses | 0 |
Net third party redeemable noncontrolling interest share transactions | (33,655) | (43,909)
Taxes paid on withholding shares | 0 | (8,069)
Net cash used in financing activities | (33,655) | (51,978)
Effect of exchange rate changes on foreign currency cash | 5,477 | 2,208
Net increase (decrease) in cash and cash equivalents | 190,255 | (32,415)
Cash and cash equivalents, beginning of period | 397,860 | 483,012
Cash and cash equivalents, end of period | $ 588,115 | $ 450,597

X
- Definition The net cash inflow (outflow) associated with the acquisition or disposal of other investments during the period. + References No definition available. + Details
Name: | rnr_PaymentsForProceedsFromOtherInvestments
Namespace Prefix: | rnr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The net amount paid (received) by the reporting entity through acquisition (sale/maturities) of short-term investments with an original maturity that is one year or less which qualify for treatment as an investing activity based on management's intention and intended by management to be liquidated, if necessary, within the current operating cycle. + References No definition available. + Details
Name: | rnr_PaymentsForProceedsFromOtherShortTermInvestments
Namespace Prefix: | rnr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=82887183&loc=d3e6676-107765 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3044-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.1) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_CashAndCashEquivalentsAtCarryingValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of increase (decrease) in cash and cash equivalents. Cash and cash equivalents are the amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Includes effect from exchange rate changes. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3521-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 230 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=98513438&loc=d3e33268-110906 + Details
Name: | us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of increase (decrease) from the effect of exchange rate changes on cash and cash equivalent balances held in foreign currencies. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 230 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=98513438&loc=d3e33268-110906 + Details
Name: | us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The increase (decrease) during the reporting period in the aggregate amount of obligations to be paid to the following types of related parties: a parent company and its subsidiaries; subsidiaries of a common parent; an entity and trust for the benefit of employees, such as pension and profit-sharing trusts that are managed by or under the trusteeship of the entities' management; an entity and its principal owners, management, or member of their immediate families; affiliates; or other parties with the ability to exert significant influence. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 + Details
Name: | us-gaap_IncreaseDecreaseInDueToRelatedParties
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3521-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 26 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3574-108585 + Details
Name: | us-gaap_NetCashProvidedByUsedInFinancingActivities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of cash inflow (outflow) from investing activities, including discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3521-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 26 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3574-108585 + Details
Name: | us-gaap_NetCashProvidedByUsedInInvestingActivities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3521-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3536-108585 + Details
Name: | us-gaap_NetCashProvidedByUsedInOperatingActivities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The net cash outflow or inflow associated with the acquisition or sale of a business segment during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3213-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3179-108585 + Details
Name: | us-gaap_PaymentsForProceedsFromBusinessesAndInterestInAffiliates
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The cash outflow to reacquire common stock during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3291-108585 + Details
Name: | us-gaap_PaymentsForRepurchaseOfCommonStock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The cash outflow during the period for redemption of redeemable noncontrolling interests. + References No definition available. + Details
Name: | us-gaap_PaymentsForRepurchaseOfRedeemableNoncontrollingInterest
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3291-108585 + Details
Name: | us-gaap_PaymentsOfDividendsCommonStock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of cash outflow in the form of ordinary dividends to preferred shareholders of the parent entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3291-108585 + Details
Name: | us-gaap_PaymentsOfDividendsPreferredStockAndPreferenceStock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of cash outflow to satisfy an employee's income tax withholding obligation as part of a net-share settlement of a share-based award. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 25 -Paragraph 19A -URI http://asc.fasb.org/extlink&oid=96949009&loc=SL79513924-113897 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3291-108585 + Details
Name: | us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The cash outflow to acquire securities classified as trading securities and held for investment purposes. Excludes payments for trading securities purchased and held principally for the purpose of selling them in the near term (thus held for only a short period of time). + References No definition available. + Details
Name: | us-gaap_PaymentsToAcquireTradingSecuritiesHeldforinvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The cash inflow from an entity that is affiliated with the entity by means of direct or indirect ownership. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3255-108585 + Details
Name: | us-gaap_ProceedsFromContributionsFromAffiliates
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt. + References No definition available. + Details
Name: | us-gaap_ProceedsFromIssuanceOfDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of cash inflow (outflow) from sales and purchases of trading securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=82896770&loc=d3e26853-111562 + Details
Name: | us-gaap_ProceedsFromPaymentsForTradingSecurities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The cash inflow associated with the sale or maturity (principal being due) of securities not classified as either held-to-maturity securities or trading securities which are classified as available-for-sale securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3179-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=82896770&loc=d3e26853-111562 + Details
Name: | us-gaap_ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The cash inflow associated with the sale, maturities, repayments and calls of securities classified as trading securities and held for investment purposes. Excludes proceeds from trading securities purchased and held principally for the purpose of selling them in the near term (thus held for only a short period of time). + References No definition available. + Details
Name: | us-gaap_ProceedsFromSaleAndMaturityOfTradingSecuritiesHeldforinvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations. + References No definition available. + Details
Name: | us-gaap_RepaymentsOfDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | dei_LegalEntityAxis=rnr_SubsidiaryIssuerOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=rnr_SubsidiaryIssuerTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=rnr_SubsidiaryIssuerThreeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConsolidatedEntitiesAxis=us-gaap_ParentCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConsolidatedEntitiesAxis=us-gaap_NonGuarantorSubsidiariesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConsolidationItemsAxis=us-gaap_ReportableLegalEntitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |