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Condensed Consolidating Financial Information Provided In Connection With Outstanding Debt Of Subsidiaries (Condensed Consolidating Balance Sheet) (Details) - USD ($) $ in Thousands | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
--- | --- | --- | --- | ---
Assets |  |  |  |
Total investments | $ 8,999,068 | $ 6,743,750 |  |
Cash and cash equivalents | 506,885 | 525,584 | $ 408,032 | $ 304,145
Investments in subsidiaries | 0 | 0 |  |
Due from subsidiaries and affiliates | 0 | 0 |  |
Premiums receivable | 778,009 | 440,007 |  |
Prepaid reinsurance premiums | 230,671 | 94,810 |  |
Reinsurance recoverable | 134,526 | 66,694 | 101,025 |
Accrued investment income | 39,749 | 26,509 |  |
Deferred acquisition costs | 199,380 | 110,059 |  |
Receivable for investments sold | 220,834 | 52,390 |  |
Other assets | 186,595 | 135,845 |  |
Goodwill and other intangible assets | 265,154 | 7,902 |  |
Total assets | 11,560,871 | 8,203,550 |  |
Liabilities |  |  |  |
Reserve for claims and claim expenses | 2,767,045 | 1,412,510 | 1,563,730 |
Unearned premiums | 889,102 | 512,386 |  |
Long-term debt | 966,079 | 249,522 |  |
Amounts due to subsidiaries and affiliates | 0 | 0 |  |
Reinsurance balances payable | 523,974 | 454,580 |  |
Payable for investments purchased | 391,378 | 203,021 |  |
Other liabilities | 245,145 | 374,108 |  |
Total liabilities | 5,782,723 | 3,206,127 |  |
Redeemable noncontrolling interests | 1,045,964 | 1,131,708 |  |
Shareholders' Equity |  |  |  |
Total shareholders’ equity | 4,732,184 | 3,865,715 |  |
Total liabilities, noncontrolling interests and shareholders’ equity | 11,560,871 | 8,203,550 |  |
RenaissanceRe Holdings Ltd. (Parent Guarantor) |  |  |  |
Assets |  |  |  |
Total investments | 349,892 | 137,006 |  |
Cash and cash equivalents | 10,185 | 5,986 | 8,796 | 6,298
Investments in subsidiaries | 3,902,519 | 3,509,974 |  |
Due from subsidiaries and affiliates | 81,282 | 126,548 |  |
Premiums receivable | 0 | 0 |  |
Prepaid reinsurance premiums | 0 | 0 |  |
Reinsurance recoverable | 0 | 0 |  |
Accrued investment income | 1,253 | 0 |  |
Deferred acquisition costs | 0 | 0 |  |
Receivable for investments sold | 26 | 10 |  |
Other assets | 390,302 | 112,400 |  |
Goodwill and other intangible assets | 137,064 | 0 |  |
Total assets | 4,872,523 | 3,891,924 |  |
Liabilities |  |  |  |
Reserve for claims and claim expenses | 0 | 0 |  |
Unearned premiums | 0 | 0 |  |
Long-term debt | 117,000 | 0 |  |
Amounts due to subsidiaries and affiliates | 2,641 | 6,000 |  |
Reinsurance balances payable | 0 | 0 |  |
Payable for investments purchased | 999 | 0 |  |
Other liabilities | 19,699 | 20,209 |  |
Total liabilities | 140,339 | 26,209 |  |
Redeemable noncontrolling interests | 0 | 0 |  |
Shareholders' Equity |  |  |  |
Total shareholders’ equity | 4,732,184 | 3,865,715 |  |
Total liabilities, noncontrolling interests and shareholders’ equity | 4,872,523 | 3,891,924 |  |
RenRe North America Holdings Inc. (Subsidiary Issuer) |  |  |  |
Assets |  |  |  |
Total investments | 127,087 | 88,150 |  |
Cash and cash equivalents | 5,908 | 1,033 | 4,027 | 1,528
Investments in subsidiaries | 48,754 | 51,812 |  |
Due from subsidiaries and affiliates | 69,739 | 23 |  |
Premiums receivable | 0 | 0 |  |
Prepaid reinsurance premiums | 0 | 0 |  |
Reinsurance recoverable | 0 | 0 |  |
Accrued investment income | 169 | 121 |  |
Deferred acquisition costs | 0 | 0 |  |
Receivable for investments sold | 1 | 0 |  |
Other assets | 29,532 | 1,242 |  |
Goodwill and other intangible assets | 0 | 0 |  |
Total assets | 281,190 | 142,381 |  |
Liabilities |  |  |  |
Reserve for claims and claim expenses | 0 | 0 |  |
Unearned premiums | 0 | 0 |  |
Long-term debt | 0 | 249,522 |  |
Amounts due to subsidiaries and affiliates | 202 | 49,015 |  |
Reinsurance balances payable | 0 | 0 |  |
Payable for investments purchased | 6 | 0 |  |
Other liabilities | 1,148 | 4,013 |  |
Total liabilities | 1,356 | 302,550 |  |
Redeemable noncontrolling interests | 0 | 0 |  |
Shareholders' Equity |  |  |  |
Total shareholders’ equity | 279,834 | (160,169) |  |
Total liabilities, noncontrolling interests and shareholders’ equity | 281,190 | 142,381 |  |
Platinum Underwriters Finance, Inc. (Subsidiary Issuer) |  |  |  |
Assets |  |  |  |
Total investments | 205,777 |  |  |
Cash and cash equivalents | 7,103 | 0 |  |
Investments in subsidiaries | 867,909 |  |  |
Due from subsidiaries and affiliates | 0 |  |  |
Premiums receivable | 0 |  |  |
Prepaid reinsurance premiums | 0 |  |  |
Reinsurance recoverable | 0 |  |  |
Accrued investment income | 348 |  |  |
Deferred acquisition costs | 0 |  |  |
Receivable for investments sold | 68,537 |  |  |
Other assets | 12,852 |  |  |
Goodwill and other intangible assets | 0 |  |  |
Total assets | 1,162,526 |  |  |
Liabilities |  |  |  |
Reserve for claims and claim expenses | 0 |  |  |
Unearned premiums | 0 |  |  |
Long-term debt | 268,196 |  |  |
Amounts due to subsidiaries and affiliates | 204 |  |  |
Reinsurance balances payable | 0 |  |  |
Payable for investments purchased | 25 |  |  |
Other liabilities | 6,620 |  |  |
Total liabilities | 275,045 |  |  |
Redeemable noncontrolling interests | 0 |  |  |
Shareholders' Equity |  |  |  |
Total shareholders’ equity | 887,481 |  |  |
Total liabilities, noncontrolling interests and shareholders’ equity | 1,162,526 |  |  |
RenaissanceRe Finance, Inc. (Subsidiary Issuer) |  |  |  |
Assets |  |  |  |
Total investments | 0 |  |  |
Cash and cash equivalents | 677 | 0 |  |
Investments in subsidiaries | 1,185,736 |  |  |
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 | 119,328 |  |  |
Goodwill and other intangible assets | 0 |  |  |
Total assets | 1,305,741 |  |  |
Liabilities |  |  |  |
Reserve for claims and claim expenses | 0 |  |  |
Unearned premiums | 0 |  |  |
Long-term debt | 549,059 |  |  |
Amounts due to subsidiaries and affiliates | 68,204 |  |  |
Reinsurance balances payable | 0 |  |  |
Payable for investments purchased | 0 |  |  |
Other liabilities | 0 |  |  |
Total liabilities | 617,263 |  |  |
Redeemable noncontrolling interests | 0 |  |  |
Shareholders' Equity |  |  |  |
Total shareholders’ equity | 688,478 |  |  |
Total liabilities, noncontrolling interests and shareholders’ equity | 1,305,741 |  |  |
Other RenaissanceRe Holdings Ltd. Subsidiaries And Eliminations (Non-Guarantor Subsidiaries) |  |  |  |
Assets |  |  |  |
Total investments | 8,316,312 | 6,518,594 |  |
Cash and cash equivalents | 483,012 | 518,565 | $ 395,209 | $ 296,319
Investments in subsidiaries | 0 | 0 |  |
Due from subsidiaries and affiliates | 0 | 0 |  |
Premiums receivable | 778,009 | 440,007 |  |
Prepaid reinsurance premiums | 230,671 | 94,810 |  |
Reinsurance recoverable | 134,526 | 66,694 |  |
Accrued investment income | 37,979 | 26,388 |  |
Deferred acquisition costs | 199,380 | 110,059 |  |
Receivable for investments sold | 152,270 | 52,380 |  |
Other assets | 125,927 | 123,661 |  |
Goodwill and other intangible assets | 128,090 | 7,902 |  |
Total assets | 10,586,176 | 7,959,060 |  |
Liabilities |  |  |  |
Reserve for claims and claim expenses | 2,767,045 | 1,412,510 |  |
Unearned premiums | 889,102 | 512,386 |  |
Long-term debt | 148,824 | 0 |  |
Amounts due to subsidiaries and affiliates | 0 | 0 |  |
Reinsurance balances payable | 523,974 | 454,580 |  |
Payable for investments purchased | 390,348 | 203,021 |  |
Other liabilities | 222,320 | 351,344 |  |
Total liabilities | 4,941,613 | 2,933,841 |  |
Redeemable noncontrolling interests | 1,045,964 | 1,131,708 |  |
Shareholders' Equity |  |  |  |
Total shareholders’ equity | 4,598,599 | 3,893,511 |  |
Total liabilities, noncontrolling interests and shareholders’ equity | 10,586,176 | 7,959,060 |  |
Consolidating Adjustments |  |  |  |
Assets |  |  |  |
Total investments | 0 | 0 |  |
Cash and cash equivalents | 0 | 0 |  |
Investments in subsidiaries | (6,004,918) | (3,561,786) |  |
Due from subsidiaries and affiliates | (151,021) | (126,571) |  |
Premiums receivable | 0 | 0 |  |
Prepaid reinsurance premiums | 0 | 0 |  |
Reinsurance recoverable | 0 | 0 |  |
Accrued investment income | 0 | 0 |  |
Deferred acquisition costs | 0 | 0 |  |
Receivable for investments sold | 0 | 0 |  |
Other assets | (491,346) | (101,458) |  |
Goodwill and other intangible assets | 0 | 0 |  |
Total assets | (6,647,285) | (3,789,815) |  |
Liabilities |  |  |  |
Reserve for claims and claim expenses | 0 | 0 |  |
Unearned premiums | 0 | 0 |  |
Long-term debt | (117,000) | 0 |  |
Amounts due to subsidiaries and affiliates | (71,251) | (55,015) |  |
Reinsurance balances payable | 0 | 0 |  |
Payable for investments purchased | 0 | 0 |  |
Other liabilities | (4,642) | (1,458) |  |
Total liabilities | (192,893) | (56,473) |  |
Redeemable noncontrolling interests | 0 | 0 |  |
Shareholders' Equity |  |  |  |
Total shareholders’ equity | (6,454,392) | (3,733,342) |  |
Total liabilities, noncontrolling interests and shareholders’ equity | $ (6,647,285) | $ (3,789,815) |  |

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- Definition Amount payable to broker-dealers and clearing organizations, including, but not limited to, securities failed-to-receive, certain deposits received for securities loaned, open transactions, and floor-brokerage payables. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 940 -SubTopic 20 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=35710130&loc=d3e41645-110958 + Details
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- Definition The carrying amount as of the balance sheet date due the entity from (a) agents and insureds, (b) uncollected premiums and (c) others, net of the allowance for doubtful accounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.(a),5) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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- Definition The unexpired portion of premiums ceded on policies in force as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Prepaid Reinsurance Premiums -URI http://asc.fasb.org/extlink&oid=6521719 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 340 -Section 25 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6485982&loc=d3e22818-158507 + Details
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- Definition Amount receivable from broker-dealers and clearing organizations, including, but not limited to, securities failed-to-deliver, certain deposits for securities borrowed, open transactions, good faith and margin deposits, commissions and floor brokerage receivables. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 940 -SubTopic 20 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=35710130&loc=d3e41645-110958 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=28367877&loc=d3e4428-111522 + Details
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- Definition As of the reporting date, the aggregate carrying amount of all noncontrolling interests which are redeemable by the (parent) entity (1) at a fixed or determinable price on a fixed or determinable date, (2) at the option of the holder of the noncontrolling interest, or (3) upon occurrence of an event that is not solely within the control of the (parent) entity. This item includes noncontrolling interest holder's ownership (or holders' ownership) regardless of the type of equity interest (common, preferred, other) including all potential organizational (legal) forms of the investee entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section S99 -Paragraph 3A -Subparagraph (12)(c) -URI http://asc.fasb.org/extlink&oid=27011957&loc=SL6540498-122764 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section S99 -Paragraph 3A -Subparagraph (16)(c) -URI http://asc.fasb.org/extlink&oid=27011957&loc=SL6540498-122764 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section S99 -Paragraph 3A -Subparagraph 15 -URI http://asc.fasb.org/extlink&oid=27011957&loc=SL6540498-122764 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section S99 -Paragraph 3A -Subparagraph 14 -URI http://asc.fasb.org/extlink&oid=27011957&loc=SL6540498-122764 + Details
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- Definition Amount after valuation allowance recoverable including premium paid under reinsurance contracts. Examples include, but are not limited to, settled and unsettled claims, incurred but not reported losses, loss adjustment expense, premium paid, policy benefits and policy reserves. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 20 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6480758&loc=d3e6824-158387 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.(a),6) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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- Definition Carrying amount of premiums written on insurance contracts that have not been earned as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.(a),13(a)(2)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 16 -Article 12 + Details
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