v2.4.0.6
Condensed Consolidating Financial Information Provided In Connection With Outstanding Debt Of Subsidiaries (Condensed Consolidating Balance Sheet) (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2012
Dec. 31, 2011
Mar. 31, 2011
Dec. 31, 2010
Assets        
Total investments $ 6,411,543 $ 6,209,252    
Cash and cash equivalents 260,982 216,984 252,631 277,738
Investments in subsidiaries 0 0    
Due from subsidiaries and affiliates 0 0    
Premiums receivable 703,932 471,878    
Prepaid reinsurance premiums 143,690 58,522    
Reinsurance recoverable 279,398 404,029    
Accrued investment income 30,782 33,523    
Deferred acquisition costs 71,162 43,721    
Other assets 452,109 307,003    
Total assets 8,353,598 7,744,912    
Liabilities        
Reserve for claims and claim expenses 1,858,203 1,992,354    
Unearned premiums 646,733 347,655    
Debt 351,999 353,620    
Amounts due to subsidiaries and affiliates 0 0    
Reinsurance balances payable 285,207 256,883    
Other liabilities 603,717 514,633    
Liabilities of discontinued operations held for sale 12,539 13,507    
Total liabilities 3,758,398 3,478,652    
Redeemable noncontrolling interest - DaVinciRe 796,743 657,727    
Shareholders' Equity        
Total shareholders' equity 3,798,457 3,608,533 3,503,062  
Total liabilities, noncontrolling interests and shareholders' equity 8,353,598 7,744,912    
RenaissanceRe Holdings Ltd. (Parent Guarantor) [Member]
        
Assets        
Total investments 534,825 593,973    
Cash and cash equivalents 13,339 10,606 1,171 3,414
Investments in subsidiaries 2,968,902 2,776,997    
Due from subsidiaries and affiliates 213,462 172,069    
Premiums receivable 0 0    
Prepaid reinsurance premiums 0 0    
Reinsurance recoverable 0 0    
Accrued investment income 3,103 4,106    
Deferred acquisition costs 0 0    
Other assets 223,782 206,171    
Total assets 3,957,413 3,763,922    
Liabilities        
Reserve for claims and claim expenses 0 0    
Unearned premiums 0 0    
Debt 100,000 100,000    
Amounts due to subsidiaries and affiliates 49,303 30,519    
Reinsurance balances payable 0 0    
Other liabilities 13,545 28,210    
Liabilities of discontinued operations held for sale 0 0    
Total liabilities 162,848 158,729    
Redeemable noncontrolling interest - DaVinciRe 0 0    
Shareholders' Equity        
Total shareholders' equity 3,794,565 3,605,193    
Total liabilities, noncontrolling interests and shareholders' equity 3,957,413 3,763,922    
RenRe North America Holdings Inc. (Subsidiary Issuer) [Member]
        
Assets        
Total investments 64,616 104,869    
Cash and cash equivalents 740 4,920 5,329 3,940
Investments in subsidiaries 85,164 83,031    
Due from subsidiaries and affiliates 4 846    
Premiums receivable 0 0    
Prepaid reinsurance premiums 0 0    
Reinsurance recoverable 0 0    
Accrued investment income 512 311    
Deferred acquisition costs 0 0    
Other assets 31,014 27,198    
Total assets 182,050 221,175    
Liabilities        
Reserve for claims and claim expenses 0 0    
Unearned premiums 0 0    
Debt 249,270 249,247    
Amounts due to subsidiaries and affiliates 4,887 6,081    
Reinsurance balances payable 0 0    
Other liabilities 4,116 3,755    
Liabilities of discontinued operations held for sale 12,539 13,507    
Total liabilities 270,812 272,590    
Redeemable noncontrolling interest - DaVinciRe 0 0    
Shareholders' Equity        
Total shareholders' equity (88,762) (51,415)    
Total liabilities, noncontrolling interests and shareholders' equity 182,050 221,175    
Other RenaissanceRe Holdings Ltd. Subsidiaries And Eliminations (Non-Guarantor Subsidiaries) [Member]
        
Assets        
Total investments 5,812,102 [1] 5,510,410 [1]    
Cash and cash equivalents 246,903 [1] 201,458 [1] 246,131 [1] 270,384 [1]
Investments in subsidiaries 0 [1] 0 [1]    
Due from subsidiaries and affiliates 0 [1] 0 [1]    
Premiums receivable 703,932 [1] 471,878 [1]    
Prepaid reinsurance premiums 143,690 [1] 58,522 [1]    
Reinsurance recoverable 279,398 [1] 404,029 [1]    
Accrued investment income 27,167 [1] 29,106 [1]    
Deferred acquisition costs 71,162 [1] 43,721 [1]    
Other assets 399,562 [1] 275,092 [1]    
Total assets 7,683,916 [1] 6,994,216 [1]    
Liabilities        
Reserve for claims and claim expenses 1,858,203 [1] 1,992,354 [1]    
Unearned premiums 646,733 [1] 347,655 [1]    
Debt 2,729 [1] 4,373 [1]    
Amounts due to subsidiaries and affiliates 0 [1] 0 [1]    
Reinsurance balances payable 285,207 [1] 256,883 [1]    
Other liabilities 586,264 [1] 482,668 [1]    
Liabilities of discontinued operations held for sale 0 [1] 0 [1]    
Total liabilities 3,379,136 [1] 3,083,933 [1]    
Redeemable noncontrolling interest - DaVinciRe 796,743 [1] 657,727 [1]    
Shareholders' Equity        
Total shareholders' equity 3,508,037 [1] 3,252,556 [1]    
Total liabilities, noncontrolling interests and shareholders' equity 7,683,916 [1] 6,994,216 [1]    
Consolidating Adjustments [Member]
        
Assets        
Total investments 0 [2] 0 [2]    
Cash and cash equivalents 0 [2] 0 [2]    
Investments in subsidiaries (3,054,066) [2] (2,860,028) [2]    
Due from subsidiaries and affiliates (213,466) [2] (172,915) [2]    
Premiums receivable 0 [2] 0 [2]    
Prepaid reinsurance premiums 0 [2] 0 [2]    
Reinsurance recoverable 0 [2] 0 [2]    
Accrued investment income 0 [2] 0 [2]    
Deferred acquisition costs 0 [2] 0 [2]    
Other assets (202,249) [2] (201,458) [2]    
Total assets (3,469,781) [2] (3,234,401) [2]    
Liabilities        
Reserve for claims and claim expenses 0 [2] 0 [2]    
Unearned premiums 0 [2] 0 [2]    
Debt 0 [2] 0 [2]    
Amounts due to subsidiaries and affiliates (54,190) [2] (36,600) [2]    
Reinsurance balances payable 0 [2] 0 [2]    
Other liabilities (208) [2] 0 [2]    
Liabilities of discontinued operations held for sale 0 [2] 0 [2]    
Total liabilities (54,398) [2] (36,600) [2]    
Redeemable noncontrolling interest - DaVinciRe 0 [2] 0 [2]    
Shareholders' Equity        
Total shareholders' equity (3,415,383) [2] (3,197,801) [2]    
Total liabilities, noncontrolling interests and shareholders' equity $ (3,469,781) [2] $ (3,234,401) [2]    
[1] Includes all other subsidiaries of RenaissanceRe Holdings Ltd. and eliminations.
[2] Includes Parent Guarantor and Subsidiary Issuer consolidating adjustments.