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
|