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Condensed Consolidating Financial Information Provided In Connection With Outstanding Debt Of Subsidiaries (Condensed Consolidating Balance Sheet) (Details) - USD ($) $ in Thousands | Sep. 30, 2016 | Dec. 31, 2015 | Sep. 30, 2015 | Dec. 31, 2014
--- | --- | --- | --- | ---
Assets |  |  |  |
Total investments | $ 9,214,555 | $ 8,999,068 |  |
Cash and cash equivalents | 493,330 | 506,885 | $ 524,546 | $ 525,584
Investments in subsidiaries | 0 | 0 |  |
Due from subsidiaries and affiliates | 0 | 0 |  |
Premiums receivable | 1,181,331 | 778,009 |  |
Prepaid reinsurance premiums | 511,421 | 230,671 |  |
Reinsurance recoverable | 240,769 | 134,526 |  |
Accrued investment income | 37,245 | 39,749 |  |
Deferred acquisition costs | 351,841 | 199,380 |  |
Receivable for investments sold | 193,071 | 220,834 |  |
Other assets | 181,290 | 181,011 |  |
Goodwill and other intangible assets | 254,678 | 265,154 |  |
Total assets | 12,659,531 | 11,555,287 |  |
Liabilities |  |  |  |
Reserve for claims and claim expenses | 2,861,099 | 2,767,045 |  |
Unearned premiums | 1,434,136 | 889,102 |  |
Debt | 951,620 | 960,495 |  |
Amounts due to subsidiaries and affiliates | 0 | 0 |  |
Reinsurance balances payable | 774,660 | 523,974 |  |
Payable for investments purchased | 437,826 | 391,378 |  |
Other liabilities | 227,847 | 245,145 |  |
Total liabilities | 6,687,188 | 5,777,139 |  |
Redeemable noncontrolling interests | 1,164,553 | 1,045,964 |  |
Shareholders' Equity |  |  |  |
Total shareholders’ equity | 4,807,790 | 4,732,184 |  |
Total liabilities, noncontrolling interests and shareholders’ equity | 12,659,531 | 11,555,287 |  |
Reportable Legal Entities | RenaissanceRe Holdings Ltd. (Parent Guarantor) |  |  |  |
Assets |  |  |  |
Total investments | 195,577 | 349,892 |  |
Cash and cash equivalents | 10,147 | 10,185 | 12,748 | 5,986
Investments in subsidiaries | 4,080,741 | 3,902,519 |  |
Due from subsidiaries and affiliates | 119,086 | 81,282 |  |
Premiums receivable | 0 | 0 |  |
Prepaid reinsurance premiums | 0 | 0 |  |
Reinsurance recoverable | 0 | 0 |  |
Accrued investment income | 153 | 1,253 |  |
Deferred acquisition costs | 0 | 0 |  |
Receivable for investments sold | 46 | 26 |  |
Other assets | 405,702 | 390,302 |  |
Goodwill and other intangible assets | 132,072 | 137,064 |  |
Total assets | 4,943,524 | 4,872,523 |  |
Liabilities |  |  |  |
Reserve for claims and claim expenses | 0 | 0 |  |
Unearned premiums | 0 | 0 |  |
Debt | 117,000 | 117,000 |  |
Amounts due to subsidiaries and affiliates | 4,012 | 2,641 |  |
Reinsurance balances payable | 0 | 0 |  |
Payable for investments purchased | 0 | 999 |  |
Other liabilities | 14,722 | 19,699 |  |
Total liabilities | 135,734 | 140,339 |  |
Redeemable noncontrolling interests | 0 | 0 |  |
Shareholders' Equity |  |  |  |
Total shareholders’ equity | 4,807,790 | 4,732,184 |  |
Total liabilities, noncontrolling interests and shareholders’ equity | 4,943,524 | 4,872,523 |  |
Reportable Legal Entities | RenRe North America Holdings Inc. (Subsidiary Issuer) |  |  |  |
Assets |  |  |  |
Total investments | 117,733 | 127,087 |  |
Cash and cash equivalents | 857 | 5,908 | 1,797 | 1,033
Investments in subsidiaries | 38,860 | 48,754 |  |
Due from subsidiaries and affiliates | 92,192 | 69,739 |  |
Premiums receivable | 0 | 0 |  |
Prepaid reinsurance premiums | 0 | 0 |  |
Reinsurance recoverable | 0 | 0 |  |
Accrued investment income | 224 | 169 |  |
Deferred acquisition costs | 0 | 0 |  |
Receivable for investments sold | 4 | 1 |  |
Other assets | 31,877 | 29,532 |  |
Goodwill and other intangible assets | 0 | 0 |  |
Total assets | 281,747 | 281,190 |  |
Liabilities |  |  |  |
Reserve for claims and claim expenses | 0 | 0 |  |
Unearned premiums | 0 | 0 |  |
Debt | 0 | 0 |  |
Amounts due to subsidiaries and affiliates | 153 | 202 |  |
Reinsurance balances payable | 0 | 0 |  |
Payable for investments purchased | 1 | 6 |  |
Other liabilities | 5,638 | 1,148 |  |
Total liabilities | 5,792 | 1,356 |  |
Redeemable noncontrolling interests | 0 | 0 |  |
Shareholders' Equity |  |  |  |
Total shareholders’ equity | 275,955 | 279,834 |  |
Total liabilities, noncontrolling interests and shareholders’ equity | 281,747 | 281,190 |  |
Reportable Legal Entities | Platinum Underwriters Finance, Inc. (Subsidiary Issuer) |  |  |  |
Assets |  |  |  |
Total investments | 275,624 | 205,777 |  |
Cash and cash equivalents | 1,745 | 7,103 | 1,061 | 0
Investments in subsidiaries | 899,635 | 867,909 |  |
Due from subsidiaries and affiliates | 0 | 0 |  |
Premiums receivable | 0 | 0 |  |
Prepaid reinsurance premiums | 0 | 0 |  |
Reinsurance recoverable | 0 | 0 |  |
Accrued investment income | 514 | 348 |  |
Deferred acquisition costs | 0 | 0 |  |
Receivable for investments sold | 4,019 | 68,537 |  |
Other assets | 10,222 | 12,852 |  |
Goodwill and other intangible assets | 0 | 0 |  |
Total assets | 1,191,759 | 1,162,526 |  |
Liabilities |  |  |  |
Reserve for claims and claim expenses | 0 | 0 |  |
Unearned premiums | 0 | 0 |  |
Debt | 258,563 | 268,196 |  |
Amounts due to subsidiaries and affiliates | 96 | 204 |  |
Reinsurance balances payable | 0 | 0 |  |
Payable for investments purchased | 4,259 | 25 |  |
Other liabilities | 5,265 | 6,620 |  |
Total liabilities | 268,183 | 275,045 |  |
Redeemable noncontrolling interests | 0 | 0 |  |
Shareholders' Equity |  |  |  |
Total shareholders’ equity | 923,576 | 887,481 |  |
Total liabilities, noncontrolling interests and shareholders’ equity | 1,191,759 | 1,162,526 |  |
Reportable Legal Entities | RenaissanceRe Finance, Inc. (Subsidiary Issuer) |  |  |  |
Assets |  |  |  |
Total investments | 0 | 0 |  |
Cash and cash equivalents | 2,530 | 677 | 6,735 | 0
Investments in subsidiaries | 1,218,521 | 1,185,736 |  |
Due from subsidiaries and affiliates | 2,345 | 0 |  |
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 | 123,787 | 115,456 |  |
Goodwill and other intangible assets | 0 | 0 |  |
Total assets | 1,347,183 | 1,301,869 |  |
Liabilities |  |  |  |
Reserve for claims and claim expenses | 0 | 0 |  |
Unearned premiums | 0 | 0 |  |
Debt | 545,713 | 545,187 |  |
Amounts due to subsidiaries and affiliates | 95,928 | 68,204 |  |
Reinsurance balances payable | 0 | 0 |  |
Payable for investments purchased | 0 | 0 |  |
Other liabilities | 0 | 0 |  |
Total liabilities | 641,641 | 613,391 |  |
Redeemable noncontrolling interests | 0 | 0 |  |
Shareholders' Equity |  |  |  |
Total shareholders’ equity | 705,542 | 688,478 |  |
Total liabilities, noncontrolling interests and shareholders’ equity | 1,347,183 | 1,301,869 |  |
Reportable Legal Entities | Other RenaissanceRe Holdings Ltd. Subsidiaries And Eliminations (Non-Guarantor Subsidiaries) |  |  |  |
Assets |  |  |  |
Total investments | 8,625,621 | 8,316,312 |  |
Cash and cash equivalents | 478,051 | 483,012 | $ 502,205 | $ 518,565
Investments in subsidiaries | 0 | 0 |  |
Due from subsidiaries and affiliates | 0 | 0 |  |
Premiums receivable | 1,181,331 | 778,009 |  |
Prepaid reinsurance premiums | 511,421 | 230,671 |  |
Reinsurance recoverable | 240,769 | 134,526 |  |
Accrued investment income | 36,354 | 37,979 |  |
Deferred acquisition costs | 351,841 | 199,380 |  |
Receivable for investments sold | 189,002 | 152,270 |  |
Other assets | 124,129 | 124,215 |  |
Goodwill and other intangible assets | 122,606 | 128,090 |  |
Total assets | 11,861,125 | 10,584,464 |  |
Liabilities |  |  |  |
Reserve for claims and claim expenses | 2,861,099 | 2,767,045 |  |
Unearned premiums | 1,434,136 | 889,102 |  |
Debt | 147,344 | 147,112 |  |
Amounts due to subsidiaries and affiliates | 0 | 0 |  |
Reinsurance balances payable | 774,660 | 523,974 |  |
Payable for investments purchased | 433,566 | 390,348 |  |
Other liabilities | 212,349 | 222,320 |  |
Total liabilities | 5,863,154 | 4,939,901 |  |
Redeemable noncontrolling interests | 1,164,553 | 1,045,964 |  |
Shareholders' Equity |  |  |  |
Total shareholders’ equity | 4,833,418 | 4,598,599 |  |
Total liabilities, noncontrolling interests and shareholders’ equity | 11,861,125 | 10,584,464 |  |
Consolidating Adjustments |  |  |  |
Assets |  |  |  |
Total investments | 0 | 0 |  |
Cash and cash equivalents | 0 | 0 |  |
Investments in subsidiaries | (6,237,757) | (6,004,918) |  |
Due from subsidiaries and affiliates | (213,623) | (151,021) |  |
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 | (514,427) | (491,346) |  |
Goodwill and other intangible assets | 0 | 0 |  |
Total assets | (6,965,807) | (6,647,285) |  |
Liabilities |  |  |  |
Reserve for claims and claim expenses | 0 | 0 |  |
Unearned premiums | 0 | 0 |  |
Debt | (117,000) | (117,000) |  |
Amounts due to subsidiaries and affiliates | (100,189) | (71,251) |  |
Reinsurance balances payable | 0 | 0 |  |
Payable for investments purchased | 0 | 0 |  |
Other liabilities | (10,127) | (4,642) |  |
Total liabilities | (227,316) | (192,893) |  |
Redeemable noncontrolling interests | 0 | 0 |  |
Shareholders' Equity |  |  |  |
Total shareholders’ equity | (6,738,491) | (6,454,392) |  |
Total liabilities, noncontrolling interests and shareholders’ equity | $ (6,965,807) | $ (6,647,285) |  |

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- Definition Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + 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)(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 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(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + 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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