v2.4.0.6
Condensed Consolidating Financial Information Provided In Connection With Outstanding Debt Of Subsidiaries (Condensed Consolidating Statement of Comprehensive Income (Loss) (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2012
Mar. 31, 2011
Condensed Financial Statements, Captions [Line Items]    
Net income (loss) $ 263,820 $ (324,775)
Change in net unrealized gains on investments 1,255 [1] 19 [1]
Portion of other-than-temporary impairments recognized in other comprehensive income (27) [1] 0 [1]
Comprehensive income (loss) 265,048 (324,756)
Net (income) loss attributable to noncontrolling interests (53,641) 85,492
Change in net unrealized gains on fixed maturity investments available for sale attributable to noncontrolling interests 0 [1] 3 [1]
Comprehensive (income) loss attributable to noncontrolling interests (53,641) 85,495
Comprehensive income (loss) attributable to RenaissanceRe 211,407 (239,261)
RenaissanceRe Holdings Ltd. (Parent Guarantor) [Member]
   
Condensed Financial Statements, Captions [Line Items]    
Net income (loss) 210,179 (239,283)
Change in net unrealized gains on investments 0 0
Portion of other-than-temporary impairments recognized in other comprehensive income 0 0
Comprehensive income (loss) 210,179 (239,283)
Net (income) loss attributable to noncontrolling interests 0 0
Change in net unrealized gains on fixed maturity investments available for sale attributable to noncontrolling interests 0 0
Comprehensive (income) loss attributable to noncontrolling interests 0 0
Comprehensive income (loss) attributable to RenaissanceRe 210,179 (239,283)
RenRe North America Holdings Inc. (Subsidiary Issuer) [Member]
   
Condensed Financial Statements, Captions [Line Items]    
Net income (loss) (37,414) (3,390)
Change in net unrealized gains on investments 0 0
Portion of other-than-temporary impairments recognized in other comprehensive income 0 0
Comprehensive income (loss) (37,414) (3,390)
Net (income) loss attributable to noncontrolling interests 0 0
Change in net unrealized gains on fixed maturity investments available for sale attributable to noncontrolling interests 0 0
Comprehensive (income) loss attributable to noncontrolling interests 0 0
Comprehensive income (loss) attributable to RenaissanceRe (37,414) (3,390)
Other RenaissanceRe Holdings Ltd. Subsidiaries And Eliminations (Non-Guarantor Subsidiaries) [Member]
   
Condensed Financial Statements, Captions [Line Items]    
Net income (loss) 269,335 [1] (321,978) [1]
Change in net unrealized gains on investments 1,255 19
Portion of other-than-temporary impairments recognized in other comprehensive income (27) 0
Comprehensive income (loss) 270,563 [1] (321,959) [1]
Net (income) loss attributable to noncontrolling interests (53,641) [1] 85,492 [1]
Change in net unrealized gains on fixed maturity investments available for sale attributable to noncontrolling interests 0 3
Comprehensive (income) loss attributable to noncontrolling interests (53,641) [1] 85,495 [1]
Comprehensive income (loss) attributable to RenaissanceRe 216,922 [1] (236,464) [1]
Consolidating Adjustments [Member]
   
Condensed Financial Statements, Captions [Line Items]    
Net income (loss) (178,280) [2] 239,876 [2]
Change in net unrealized gains on investments 0 [2] 0 [2]
Portion of other-than-temporary impairments recognized in other comprehensive income 0 [2] 0 [2]
Comprehensive income (loss) (178,280) [2] 239,876 [2]
Net (income) loss attributable to noncontrolling interests 0 [2] 0 [2]
Change in net unrealized gains on fixed maturity investments available for sale attributable to noncontrolling interests 0 [2] 0 [2]
Comprehensive (income) loss attributable to noncontrolling interests 0 [2] 0 [2]
Comprehensive income (loss) attributable to RenaissanceRe $ (178,280) [2] $ 239,876 [2]
[1] Includes all other subsidiaries of RenaissanceRe Holdings Ltd. and eliminations.
[2] Includes Parent Guarantor and Subsidiary Issuer consolidating adjustments.