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, 2013
Dec. 31, 2012
Mar. 31, 2012
Dec. 31, 2011
Assets        
Total investments $ 6,300,439 $ 6,360,647    
Cash and cash equivalents 335,625 325,358 260,982 216,984
Investments in subsidiaries 0 0    
Due from subsidiaries and affiliates 0 0    
Premiums receivable 654,368 491,365    
Prepaid reinsurance premiums 170,216 77,082    
Reinsurance recoverable 162,948 192,512    
Accrued investment income 29,921 33,478    
Deferred acquisition costs 77,914 52,622    
Other assets 365,489 395,564    
Total assets 8,096,920 7,928,628    
Liabilities        
Reserve for claims and claim expenses 1,755,783 1,879,377    
Unearned premiums 658,209 399,517    
Debt 254,315 351,775    
Amounts due to subsidiaries and affiliates 0 0    
Reinsurance balances payable 380,939 290,419    
Other liabilities 605,052 532,225    
Total liabilities 3,654,298 3,453,313    
Redeemable noncontrolling interest - DaVinciRe 875,770 968,259    
Shareholders' Equity        
Total shareholders’ equity 3,566,852 3,507,056 3,798,457  
Total liabilities, noncontrolling interests and shareholders’ equity 8,096,920 7,928,628    
RenaissanceRe Holdings Ltd. (Parent Guarantor) [Member]
        
Assets        
Total investments 215,197 572,139    
Cash and cash equivalents 2,842 6,298 13,339 10,606
Investments in subsidiaries 3,133,836 2,864,793    
Due from subsidiaries and affiliates 177,136 53,296    
Premiums receivable 0 0    
Prepaid reinsurance premiums 0 0    
Reinsurance recoverable 0 0    
Accrued investment income 123 2,535    
Deferred acquisition costs 0 0    
Other assets 112,284 175,105    
Total assets 3,641,418 3,674,166    
Liabilities        
Reserve for claims and claim expenses 0 0    
Unearned premiums 0 0    
Debt 0 100,000    
Amounts due to subsidiaries and affiliates 71,330 11,371    
Reinsurance balances payable 0 0    
Other liabilities 6,983 59,730    
Total liabilities 78,313 171,101    
Redeemable noncontrolling interest - DaVinciRe 0 0    
Shareholders' Equity        
Total shareholders’ equity 3,563,105 3,503,065    
Total liabilities, noncontrolling interests and shareholders’ equity 3,641,418 3,674,166    
RenRe North America Holdings Inc. (Subsidiary Issuer) [Member]
        
Assets        
Total investments 40,137 49,618    
Cash and cash equivalents 1,484 1,528 740 4,920
Investments in subsidiaries 124,129 113,856    
Due from subsidiaries and affiliates 88 117    
Premiums receivable 0 0    
Prepaid reinsurance premiums 0 0    
Reinsurance recoverable 0 0    
Accrued investment income 98 69    
Deferred acquisition costs 0 0    
Other assets 15,701 15,754    
Total assets 181,637 180,942    
Liabilities        
Reserve for claims and claim expenses 0 0    
Unearned premiums 0 0    
Debt 249,362 249,339    
Amounts due to subsidiaries and affiliates 5,047 5,593    
Reinsurance balances payable 0 0    
Other liabilities 758 4,572    
Total liabilities 255,167 259,504    
Redeemable noncontrolling interest - DaVinciRe 0 0    
Shareholders' Equity        
Total shareholders’ equity (73,530) (78,562)    
Total liabilities, noncontrolling interests and shareholders’ equity 181,637 180,942    
Other RenaissanceRe Holdings Ltd. Subsidiaries And Eliminations (Non-Guarantor Subsidiaries) [Member]
        
Assets        
Total investments 6,045,105 [1] 5,738,890 [1]    
Cash and cash equivalents 331,299 [1] 317,532 [1] 246,903 [1] 201,458 [1]
Investments in subsidiaries 0 [1] 0 [1]    
Due from subsidiaries and affiliates 0 [1] 0 [1]    
Premiums receivable 654,368 [1] 491,365 [1]    
Prepaid reinsurance premiums 170,216 [1] 77,082 [1]    
Reinsurance recoverable 162,948 [1] 192,512 [1]    
Accrued investment income 29,700 [1] 30,874 [1]    
Deferred acquisition costs 77,914 [1] 52,622 [1]    
Other assets 351,752 [1] 320,198 [1]    
Total assets 7,823,302 [1] 7,221,075 [1]    
Liabilities        
Reserve for claims and claim expenses 1,755,783 [1] 1,879,377 [1]    
Unearned premiums 658,209 [1] 399,517 [1]    
Debt 4,953 [1] 2,436 [1]    
Amounts due to subsidiaries and affiliates 0 [1] 0 [1]    
Reinsurance balances payable 380,939 [1] 290,419 [1]    
Other liabilities 597,519 [1] 469,381 [1]    
Total liabilities 3,397,403 [1] 3,041,130 [1]    
Redeemable noncontrolling interest - DaVinciRe 875,770 [1] 968,259 [1]    
Shareholders' Equity        
Total shareholders’ equity 3,550,129 [1] 3,211,686 [1]    
Total liabilities, noncontrolling interests and shareholders’ equity 7,823,302 [1] 7,221,075 [1]    
Consolidating Adjustments [Member]
        
Assets        
Total investments 0 [2] 0 [2]    
Cash and cash equivalents 0 [2] 0 [2]    
Investments in subsidiaries (3,257,965) [2] (2,978,649) [2]    
Due from subsidiaries and affiliates (177,224) [2] (53,413) [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 (114,248) [2] (115,493) [2]    
Total assets (3,549,437) [2] (3,147,555) [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 (76,377) [2] (16,964) [2]    
Reinsurance balances payable 0 [2] 0 [2]    
Other liabilities (208) [2] (1,458) [2]    
Total liabilities (76,585) [2] (18,422) [2]    
Redeemable noncontrolling interest - DaVinciRe 0 [2] 0 [2]    
Shareholders' Equity        
Total shareholders’ equity (3,472,852) [2] (3,129,133) [2]    
Total liabilities, noncontrolling interests and shareholders’ equity $ (3,549,437) [2] $ (3,147,555) [2]    
[1] Includes all other subsidiaries of RenaissanceRe Holdings Ltd. and eliminations.
[2] Includes Parent Guarantor and Subsidiary Issuer consolidating adjustments.