XML 152 R136.htm IDEA: XBRL DOCUMENT
v3.20.4

Condensed Consolidating Financial Information Provided in Connection with Outstanding Debt of Subsidiaries (Condensed Consolidating Statement of Cash Flows) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Cash flows (used in) provided by operating activities |  |  |
Net cash provided by operating activities | $ 1,992,735 | $ 2,137,195 | $ 1,221,701
Cash flows used in investing activities |  |  |
Proceeds from sales and maturities of fixed maturity investments trading | 15,186,952 | 17,313,940 | 11,585,576
Purchases of fixed maturity investments trading | (16,836,538) | (17,919,343) | (12,489,972)
Net sales (purchases) of equity investments trading | 829 | (7,841) | 14,156
Net purchases of short term investments | (581,473) | (1,900,741) | (1,436,389)
Net purchases of other investments | (216,760) | (202,878) | (199,475)
Net purchases of investments in other ventures | (3,698) | (2,717) | (21,473)
Return of investment from investment in other ventures | 9,255 | 11,250 | 8,464
Net (purchases) sales of other assets | 0 | (4,108) | 2,500
Dividends and return of capital from subsidiaries | 0 | 0 | 0
Contributions to subsidiaries | 0 | 0 | 0
Due (to) from subsidiaries | 0 | 0 | 0
Net proceeds from sale of discontinued operations | 136,744 | 0 | 0
Net purchase of TMR | 0 | (276,206) | 0
Net cash used in investing activities | (2,304,689) | (2,988,644) | (2,536,613)
Cash flows provided by financing activities |  |  |
Dividends paid – RenaissanceRe common shares | (68,490) | (59,368) | (52,841)
Dividends paid – preference shares | (30,923) | (36,756) | (30,088)
RenaissanceRe common share repurchases | (62,621) | 0 | 0
RenaissanceRe common share issuance | 1,095,507 | 0 | 250,000
Redemption of preference shares | (125,000) | 0 | 0
Repayment of debt | (250,000) | 0 | 0
Issuance of preference shares, net of expenses | 0 | 0 | 241,448
Issuance of debt, net of expenses | 0 | 396,411 | 0
Net third-party redeemable noncontrolling interest share transactions | 119,071 | 827,083 | 665,683
Taxes paid on withholding shares | (12,330) | (7,253) | (7,862)
Net cash provided by financing activities | 665,214 | 1,120,117 | 1,066,340
Effect of exchange rate changes on foreign currency cash | 4,485 | 2,478 | (5,098)
Net increase (decrease) in cash and cash equivalents | 357,745 | 271,146 | (253,670)
Cash and cash equivalents, beginning of year | 1,379,068 | 1,107,922 | 1,361,592
Cash and cash equivalents, end of year | 1,736,813 | 1,379,068 | 1,107,922
RenaissanceRe Holdings Ltd. (Parent Guarantor) |  |  |
Cash flows (used in) provided by operating activities |  |  |
Net cash provided by operating activities | 18,191 | (2,861) | 17,187
Cash flows used in investing activities |  |  |
Proceeds from sales and maturities of fixed maturity investments trading | 370,905 | 306,579 | 384,818
Purchases of fixed maturity investments trading | (384,415) | (66,740) | (520,935)
Net purchases of short term investments | 64,209 | (116,499) | 48,600
Dividends and return of capital from subsidiaries | 827,626 | 1,400,944 | 672,098
Net cash used in investing activities | (810,821) | (267,247) | (428,966)
Cash flows provided by financing activities |  |  |
Dividends paid – RenaissanceRe common shares | (68,490) | (59,368) | (52,841)
Dividends paid – preference shares | (30,923) | (36,756) | (30,088)
RenaissanceRe common share repurchases | (62,621) | 0 | 0
RenaissanceRe common share issuance | 1,095,507 | 0 | 250,000
Redemption of preference shares | (125,000) | 0 | 0
Issuance of preference shares, net of expenses | 0 | 0 | 241,448
Issuance of debt, net of expenses | 0 | 396,411 | 0
Taxes paid on withholding shares | (12,330) | (7,253) | (7,862)
Net cash provided by financing activities | 796,143 | 293,034 | 400,657
Effect of exchange rate changes on foreign currency cash | (143) | 0 | 0
Net increase (decrease) in cash and cash equivalents | 3,370 | 22,926 | (11,122)
Cash and cash equivalents, beginning of year | 26,460 | 3,534 | 14,656
Cash and cash equivalents, end of year | 29,830 | 26,460 | 3,534
Reportable Legal Entities | RenaissanceRe Holdings Ltd. (Parent Guarantor) |  |  |
Cash flows (used in) provided by operating activities |  |  |
Net cash provided by operating activities | 18,191 | (2,861) | 17,187
Cash flows used in investing activities |  |  |
Proceeds from sales and maturities of fixed maturity investments trading | 370,905 | 306,579 | 384,818
Purchases of fixed maturity investments trading | (384,415) | (66,740) | (520,935)
Net sales (purchases) of equity investments trading | 0 | 0 | 0
Net purchases of short term investments | 64,209 | (116,499) | 48,600
Net purchases of other investments | 0 | 0 | 0
Net purchases of investments in other ventures | 0 | 0 | 0
Return of investment from investment in other ventures | 0 | 0 | 0
Net (purchases) sales of other assets |  | 0 | 0
Dividends and return of capital from subsidiaries | 827,626 | 1,400,944 | 672,098
Contributions to subsidiaries | (1,623,708) | (1,165,607) | (785,785)
Due (to) from subsidiaries | (65,438) | (625,924) | (227,762)
Net proceeds from sale of discontinued operations | 0 |  |
Net cash used in investing activities | (810,821) | (267,247) | (428,966)
Cash flows provided by financing activities |  |  |
Dividends paid – RenaissanceRe common shares | (68,490) | (59,368) | (52,841)
Dividends paid – preference shares | (30,923) | (36,756) | (30,088)
RenaissanceRe common share repurchases | (62,621) |  |
RenaissanceRe common share issuance | 1,095,507 |  | 250,000
Redemption of preference shares | (125,000) |  |
Repayment of debt | 0 |  |
Issuance of preference shares, net of expenses |  |  | 241,448
Issuance of debt, net of expenses |  | 396,411 |
Net third-party redeemable noncontrolling interest share transactions | 0 | 0 | 0
Taxes paid on withholding shares | (12,330) | (7,253) | (7,862)
Net cash provided by financing activities | 796,143 | 293,034 | 400,657
Effect of exchange rate changes on foreign currency cash | (143) | 0 | 0
Net increase (decrease) in cash and cash equivalents | 3,370 | 22,926 | (11,122)
Cash and cash equivalents, beginning of year | 26,460 | 3,534 | 14,656
Cash and cash equivalents, end of year | 29,830 | 26,460 | 3,534
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 operating activities | 2,033,704 | 1,773,122 | 1,141,869
Cash flows used in investing activities |  |  |
Proceeds from sales and maturities of fixed maturity investments trading | 14,763,093 | 16,946,624 | 11,144,240
Purchases of fixed maturity investments trading | (16,399,175) | (17,819,026) | (11,913,105)
Net sales (purchases) of equity investments trading | 829 | (7,841) | 14,156
Net purchases of short term investments | (884,058) | (1,500,525) | (1,485,444)
Net purchases of other investments | (216,760) | (202,878) | (199,475)
Net purchases of investments in other ventures | (3,698) | (2,717) | (21,473)
Return of investment from investment in other ventures | 9,255 | 11,250 | 8,464
Net (purchases) sales of other assets |  | (4,108) | 2,500
Dividends and return of capital from subsidiaries | (951,731) | (1,414,444) | (672,098)
Contributions to subsidiaries | 1,795,708 | 1,290,607 | 850,785
Due (to) from subsidiaries | (60,709) | 625,674 | 218,313
Net proceeds from sale of discontinued operations | 136,744 |  |
Net cash used in investing activities | (1,810,502) | (2,353,590) | (2,053,137)
Cash flows provided by financing activities |  |  |
Dividends paid – RenaissanceRe common shares | 0 | 0 | 0
Dividends paid – preference shares | 0 | 0 | 0
RenaissanceRe common share repurchases | 0 |  |
RenaissanceRe common share issuance | 0 |  | 0
Redemption of preference shares | 0 |  |
Repayment of debt | 0 |  |
Issuance of preference shares, net of expenses |  |  | 0
Issuance of debt, net of expenses |  | 0 |
Net third-party redeemable noncontrolling interest share transactions | 119,071 | 827,083 | 665,683
Taxes paid on withholding shares | 0 | 0 | 0
Net cash provided by financing activities | 119,071 | 827,083 | 665,683
Effect of exchange rate changes on foreign currency cash | 4,628 | 2,478 | (5,098)
Net increase (decrease) in cash and cash equivalents | 346,901 | 249,093 | (250,683)
Cash and cash equivalents, beginning of year | 1,343,877 | 1,094,784 | 1,345,467
Cash and cash equivalents, end of year | 1,690,778 | 1,343,877 | 1,094,784
Reportable Legal Entities | RenaissanceRe Finance, Inc. (Subsidiary Issuer) |  |  |
Cash flows (used in) provided by operating activities |  |  |
Net cash provided by operating activities | (59,160) | 366,934 | 62,645
Cash flows used in investing activities |  |  |
Proceeds from sales and maturities of fixed maturity investments trading | 52,954 | 60,737 | 56,518
Purchases of fixed maturity investments trading | (52,948) | (33,577) | (55,932)
Net sales (purchases) of equity investments trading | 0 | 0 | 0
Net purchases of short term investments | 238,376 | (283,717) | 455
Net purchases of other investments | 0 | 0 | 0
Net purchases of investments in other ventures | 0 | 0 | 0
Return of investment from investment in other ventures | 0 | 0 | 0
Net (purchases) sales of other assets |  | 0 | 0
Dividends and return of capital from subsidiaries | 124,105 | 13,500 | 0
Contributions to subsidiaries | (172,000) | (125,000) | (65,000)
Due (to) from subsidiaries | 126,147 | 250 | 9,449
Net proceeds from sale of discontinued operations | 0 |  |
Net cash used in investing activities | 316,634 | (367,807) | (54,510)
Cash flows provided by financing activities |  |  |
Dividends paid – RenaissanceRe common shares | 0 | 0 | 0
Dividends paid – preference shares | 0 | 0 | 0
RenaissanceRe common share repurchases | 0 |  |
RenaissanceRe common share issuance | 0 |  | 0
Redemption of preference shares | 0 |  |
Repayment of debt | (250,000) |  |
Issuance of preference shares, net of expenses |  |  | 0
Issuance of debt, net of expenses |  | 0 |
Net third-party redeemable noncontrolling interest share transactions | 0 | 0 | 0
Taxes paid on withholding shares | 0 | 0 | 0
Net cash provided by financing activities | (250,000) | 0 | 0
Effect of exchange rate changes on foreign currency cash | 0 | 0 | 0
Net increase (decrease) in cash and cash equivalents | 7,474 | (873) | 8,135
Cash and cash equivalents, beginning of year | 8,731 | 9,604 | 1,469
Cash and cash equivalents, end of year | $ 16,205 | $ 8,731 | $ 9,604

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 Payments For (Proceeds From) Repurchase (Sale) Of Redeemable Noncontrolling Interest + References No definition available. + Details
Name: | rnr_PaymentsForProceedsFromRepurchaseSaleOfRedeemableNoncontrollingInterest
Namespace Prefix: | rnr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage. Excludes amount for disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3521-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3044-108585 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=121583591&loc=SL98516268-108586 + Details
Name: | us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of increase (decrease) in cash, cash equivalents, and cash and cash equivalents restricted to withdrawal or usage; including effect from exchange rate change. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -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 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3521-108585 + Details
Name: | us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of increase (decrease) from effect of exchange rate changes on cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage; held in foreign currencies. Excludes amounts for disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, 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. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -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_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121586364&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/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3521-108585 + 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/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3521-108585 + 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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3536-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3521-108585 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585 + 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 Amount of cash (inflow) outflow from investing activities classified as other. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-04(a)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24072-122690 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3213-108585 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3179-108585 + Details
Name: | us-gaap_PaymentsForProceedsFromOtherInvestingActivities
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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121586364&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 to reacquire preferred stock during the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3291-108585 + Details
Name: | us-gaap_PaymentsForRepurchaseOfPreferredStockAndPreferenceStock
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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121586364&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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121586364&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 grantee's tax withholding obligation for award under share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121586364&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 associated with the acquisition of a controlling interest in another entity or an entity that is related to it but not strictly controlled (for example, an unconsolidated subsidiary, affiliate, joint venture or equity method investment). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3213-108585 + Details
Name: | us-gaap_PaymentsToAcquireBusinessesAndInterestInAffiliates
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3213-108585 + Details
Name: | us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3213-108585 + Details
Name: | us-gaap_PaymentsToAcquireEquityMethodInvestments
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 Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3213-108585 + 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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=121586364&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 associated with the amount received from the sale of a business segment or subsidiary or sale of an entity that is related to it but not strictly controlled during the period (for example, an unconsolidated subsidiary, affiliate, joint venture or equity method investment). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3179-108585 + Details
Name: | us-gaap_ProceedsFromDivestitureOfBusinessesAndInterestsInAffiliates
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The cash inflow associated with the deconsolidation of a previously consolidated subsidiary or the sale of investment in consolidated subsidiaries (generally greater than 50 percent). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3179-108585 + Details
Name: | us-gaap_ProceedsFromDivestitureOfInterestInConsolidatedSubsidiaries
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of distribution received from equity method investee for return of investment, classified as investing activities. Excludes distribution for return on investment, classified as operating activities. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 21D -URI http://asc.fasb.org/extlink&oid=121586364&loc=SL94080555-108585 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3179-108585 + Details
Name: | us-gaap_ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The cash inflow from the additional capital contribution to the entity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3255-108585 + Details
Name: | us-gaap_ProceedsFromIssuanceOfCommonStock
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 Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3255-108585 + Details
Name: | us-gaap_ProceedsFromIssuanceOfDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Proceeds from issuance of capital stock which provides for a specific dividend that is paid to the shareholders before any dividends to common stockholders and which takes precedence over common stockholders in the event of liquidation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3255-108585 + Details
Name: | us-gaap_ProceedsFromIssuanceOfPreferredStockAndPreferenceStock
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/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3179-108585 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 9 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3098-108585 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3213-108585 + 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, 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 Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3291-108585 + Details
Name: | us-gaap_RepaymentsOfDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | srt_ConsolidatedEntitiesAxis=srt_ParentCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ConsolidationItemsAxis=srt_ReportableLegalEntitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ConsolidatedEntitiesAxis=srt_NonGuarantorSubsidiariesMember
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: |