v2.4.0.8
INVESTMENTS (DETAILS 3) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2013
security
Dec. 31, 2012
security
Fixed Maturities [Member]
    
Schedule Of Available For Sale Securities [Line Items]    
Fair Value - 12 months or greater $ 129,651 $ 268,311
Unrealized Losses - 12 months or greater (7,840) (12,405)
Fair Value - Less than 12 months 6,047,288 1,432,707
Unrealized Losses - Less than 12 months (185,825) (6,080)
Total Fair Value of Securities in Unrealized Loss Position 6,176,939 1,701,018
Total Unrealized Losses (193,665) (18,485)
Number of Available For Sale Securities In Unrealized Loss Positions 1,512 478
Number of Available For Sale Securities in Unrealized Loss Positions for 12 Months or Greater 95 146
Fixed Maturities [Member] | Below Investment Grade or Not Rated [Member]
    
Schedule Of Available For Sale Securities [Line Items]    
Total Unrealized Losses (11,000) (3,000)
US Government and Agency [Member]
    
Schedule Of Available For Sale Securities [Line Items]    
Fair Value - 12 months or greater 0 0
Unrealized Losses - 12 months or greater 0 0
Fair Value - Less than 12 months 973,867 119,730
Unrealized Losses - Less than 12 months (32,468) (119)
Total Fair Value of Securities in Unrealized Loss Position 973,867 119,730
Total Unrealized Losses (32,468) (119)
Non-US Government [Member]
    
Schedule Of Available For Sale Securities [Line Items]    
Fair Value - 12 months or greater 16,715 44,568
Unrealized Losses - 12 months or greater (813) (1,453)
Fair Value - Less than 12 months 823,750 153,134
Unrealized Losses - Less than 12 months (41,806) (748)
Total Fair Value of Securities in Unrealized Loss Position 840,465 197,702
Total Unrealized Losses (42,619) (2,201)
Corporate Debt [Member]
    
Schedule Of Available For Sale Securities [Line Items]    
Fair Value - 12 months or greater 40,633 95,511
Unrealized Losses - 12 months or greater (2,016) (2,947)
Fair Value - Less than 12 months 1,527,022 451,651
Unrealized Losses - Less than 12 months (42,429) (2,945)
Total Fair Value of Securities in Unrealized Loss Position 1,567,655 547,162
Total Unrealized Losses (44,445) (5,892)
Agency RMBS [Member]
    
Schedule Of Available For Sale Securities [Line Items]    
Fair Value - 12 months or greater 295 9,557
Unrealized Losses - 12 months or greater (3) (148)
Fair Value - Less than 12 months 1,434,587 521,400
Unrealized Losses - Less than 12 months (42,894) (1,522)
Total Fair Value of Securities in Unrealized Loss Position 1,434,882 530,957
Total Unrealized Losses (42,897) (1,670)
CMBS [Member]
    
Schedule Of Available For Sale Securities [Line Items]    
Fair Value - 12 months or greater 71 1,749
Unrealized Losses - 12 months or greater 0 (16)
Fair Value - Less than 12 months 354,550 69,615
Unrealized Losses - Less than 12 months (6,736) (110)
Total Fair Value of Securities in Unrealized Loss Position 354,621 71,364
Total Unrealized Losses (6,736) (126)
Non-Agency RMBS [Member]
    
Schedule Of Available For Sale Securities [Line Items]    
Fair Value - 12 months or greater 4,477 11,026
Unrealized Losses - 12 months or greater (404) (537)
Fair Value - Less than 12 months 19,068 115
Unrealized Losses - Less than 12 months (368) (33)
Total Fair Value of Securities in Unrealized Loss Position 23,545 11,141
Total Unrealized Losses (772) (570)
ABS [Member]
    
Schedule Of Available For Sale Securities [Line Items]    
Fair Value - 12 months or greater 66,137 99,514
Unrealized Losses - 12 months or greater (4,559) (7,034)
Fair Value - Less than 12 months 268,462 39,296
Unrealized Losses - Less than 12 months (1,983) (148)
Total Fair Value of Securities in Unrealized Loss Position 334,599 138,810
Total Unrealized Losses (6,542) (7,182)
Municipals [Member]
    
Schedule Of Available For Sale Securities [Line Items]    
Fair Value - 12 months or greater 1,323 6,386
Unrealized Losses - 12 months or greater (45) (270)
Fair Value - Less than 12 months 645,982 77,766
Unrealized Losses - Less than 12 months (17,141) (455)
Total Fair Value of Securities in Unrealized Loss Position 647,305 84,152
Total Unrealized Losses (17,186) (725)
Equity Securities [Member]
    
Schedule Of Available For Sale Securities [Line Items]    
Fair Value - 12 months or greater 9,138 11,554
Unrealized Losses - 12 months or greater (1,202) (1,793)
Fair Value - Less than 12 months 74,569 95,697
Unrealized Losses - Less than 12 months (7,148) (5,605)
Total Fair Value of Securities in Unrealized Loss Position 83,707 107,251
Total Unrealized Losses (8,350) (7,398)
Number of Available For Sale Securities In Unrealized Loss Positions 101 106
Number of Available For Sale Securities in Unrealized Loss Positions for 12 Months or Greater 19 17
Common Stock [Member]
    
Schedule Of Available For Sale Securities [Line Items]    
Fair Value - 12 months or greater 9,138 11,554
Unrealized Losses - 12 months or greater (1,202) (1,793)
Fair Value - Less than 12 months 74,569 95,697
Unrealized Losses - Less than 12 months (7,148) (5,605)
Total Fair Value of Securities in Unrealized Loss Position 83,707 107,251
Total Unrealized Losses $ (8,350) $ (7,398)