XML 23 R42.htm IDEA: XBRL DOCUMENT v2.4.0.8
FAIR VALUE MEASUREMENTS (DETAILS) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2014
Dec. 31, 2013
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Fixed maturities $ 12,598,897 $ 11,986,327
Equity securities 744,760 701,987
Other investments 1,044,492 1,045,810
Short-term investments 100,166 46,212
Derivative assets (see Note 5) 9,191 7,808
Derivative liabilities (see Note 5) 3,033 1,967
Fair Value Measurements Recurring [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Fixed maturities 12,598,897 11,986,327
Equity securities 744,760 701,987
Other investments 1,044,492 1,045,810
Short-term investments 100,166 46,212
Derivative assets (see Note 5) 9,191 7,808
Total assets 14,497,506 13,788,144
Derivative liabilities (see Note 5) 3,033 1,967
Cash settled awards (see Note 7) 8,656 8,693
Total liabilities 11,689 10,660
US Government and Agency [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Fixed maturities 1,598,320 1,388,698
US Government and Agency [Member] | Fair Value Measurements Recurring [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Fixed maturities 1,598,320 1,388,698
Non-US Government [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Fixed maturities 1,247,667 1,176,382
Non-US Government [Member] | Fair Value Measurements Recurring [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Fixed maturities 1,247,667 1,176,382
Corporate Debt [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Fixed maturities 4,263,974 3,608,238
Corporate Debt [Member] | Fair Value Measurements Recurring [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Fixed maturities 4,263,974 3,608,238
Agency RMBS [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Fixed maturities 2,105,579 2,448,827
Agency RMBS [Member] | Fair Value Measurements Recurring [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Fixed maturities 2,105,579 2,448,827
CMBS [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Fixed maturities 939,694 797,414
CMBS [Member] | Fair Value Measurements Recurring [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Fixed maturities 939,694 797,414
Non-Agency RMBS [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Fixed maturities 84,946 67,567
Non-Agency RMBS [Member] | Fair Value Measurements Recurring [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Fixed maturities 84,946 67,567
ABS [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Fixed maturities 1,306,925 953,451
ABS [Member] | Fair Value Measurements Recurring [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Fixed maturities 1,306,925 953,451
Municipals [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Fixed maturities 1,051,792 1,545,750
Municipals [Member] | Fair Value Measurements Recurring [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Fixed maturities 1,051,792 1,545,750
Common Stock [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Equity securities 385,002 438,318
Common Stock [Member] | Fair Value Measurements Recurring [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Equity securities 385,002 438,318
Exchange-Traded Funds [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Equity securities 235,372 138,847
Exchange-Traded Funds [Member] | Fair Value Measurements Recurring [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Equity securities 235,372 138,847
Non-U.S. Bond Mutual Funds [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Equity securities 124,386 124,822
Non-U.S. Bond Mutual Funds [Member] | Fair Value Measurements Recurring [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Equity securities 124,386 124,822
Hedge Funds [Member] | Fair Value Measurements Recurring [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Other investments 919,919 949,810
Direct Lending Funds [Member] | Fair Value Measurements Recurring [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Other investments 33,467 22,134
CLO-Equities [Member] | Fair Value Measurements Recurring [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Other investments 91,106 73,866
Level 1 [Member] | Fair Value Measurements Recurring [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Fixed maturities 1,435,966 1,119,632
Equity securities 620,374 577,165
Other investments 0 0
Short-term investments 0 0
Derivative assets (see Note 5) 0 0
Total assets 2,056,340 1,696,797
Derivative liabilities (see Note 5) 0 0
Cash settled awards (see Note 7) 0 0
Total liabilities 0 0
Level 1 [Member] | US Government and Agency [Member] | Fair Value Measurements Recurring [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Fixed maturities 1,435,966 1,119,632
Level 1 [Member] | Non-US Government [Member] | Fair Value Measurements Recurring [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Fixed maturities 0 0
Level 1 [Member] | Corporate Debt [Member] | Fair Value Measurements Recurring [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Fixed maturities 0 0
Level 1 [Member] | Agency RMBS [Member] | Fair Value Measurements Recurring [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Fixed maturities 0 0
Level 1 [Member] | CMBS [Member] | Fair Value Measurements Recurring [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Fixed maturities 0 0
Level 1 [Member] | Non-Agency RMBS [Member] | Fair Value Measurements Recurring [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Fixed maturities 0 0
Level 1 [Member] | ABS [Member] | Fair Value Measurements Recurring [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Fixed maturities 0 0
Level 1 [Member] | Municipals [Member] | Fair Value Measurements Recurring [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Fixed maturities 0 0
Level 1 [Member] | Common Stock [Member] | Fair Value Measurements Recurring [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Equity securities 385,002 438,318
Level 1 [Member] | Exchange-Traded Funds [Member] | Fair Value Measurements Recurring [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Equity securities 235,372 138,847
Level 1 [Member] | Non-U.S. Bond Mutual Funds [Member] | Fair Value Measurements Recurring [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Equity securities 0 0
Level 1 [Member] | Hedge Funds [Member] | Fair Value Measurements Recurring [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Other investments 0 0
Level 1 [Member] | Direct Lending Funds [Member] | Fair Value Measurements Recurring [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Other investments 0 0
Level 1 [Member] | CLO-Equities [Member] | Fair Value Measurements Recurring [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Other investments 0 0
Level 2 [Member] | Fair Value Measurements Recurring [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Fixed maturities 11,128,115 10,831,878
Equity securities 124,386 124,822
Other investments 443,111 488,755
Short-term investments 100,166 46,212
Derivative assets (see Note 5) 9,191 6,824
Total assets 11,804,969 11,498,491
Derivative liabilities (see Note 5) 2,283 1,152
Cash settled awards (see Note 7) 8,656 8,693
Total liabilities 10,939 9,845
Level 2 [Member] | US Government and Agency [Member] | Fair Value Measurements Recurring [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Fixed maturities 162,354 269,066
Level 2 [Member] | Non-US Government [Member] | Fair Value Measurements Recurring [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Fixed maturities 1,247,667 1,176,382
Level 2 [Member] | Corporate Debt [Member] | Fair Value Measurements Recurring [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Fixed maturities 4,263,974 3,608,238
Level 2 [Member] | Agency RMBS [Member] | Fair Value Measurements Recurring [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Fixed maturities 2,105,579 2,448,827
Level 2 [Member] | CMBS [Member] | Fair Value Measurements Recurring [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Fixed maturities 935,761 793,396
Level 2 [Member] | Non-Agency RMBS [Member] | Fair Value Measurements Recurring [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Fixed maturities 84,946 67,567
Level 2 [Member] | ABS [Member] | Fair Value Measurements Recurring [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Fixed maturities 1,276,042 922,652
Level 2 [Member] | Municipals [Member] | Fair Value Measurements Recurring [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Fixed maturities 1,051,792 1,545,750
Level 2 [Member] | Common Stock [Member] | Fair Value Measurements Recurring [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Equity securities 0 0
Level 2 [Member] | Exchange-Traded Funds [Member] | Fair Value Measurements Recurring [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Equity securities 0 0
Level 2 [Member] | Non-U.S. Bond Mutual Funds [Member] | Fair Value Measurements Recurring [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Equity securities 124,386 124,822
Level 2 [Member] | Hedge Funds [Member] | Fair Value Measurements Recurring [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Other investments 443,111 488,755
Level 2 [Member] | Direct Lending Funds [Member] | Fair Value Measurements Recurring [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Other investments 0 0
Level 2 [Member] | CLO-Equities [Member] | Fair Value Measurements Recurring [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Other investments 0 0
Level 3 [Member] | Fair Value Measurements Recurring [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Fixed maturities 34,816 34,817
Equity securities 0 0
Other investments 601,381 557,055
Short-term investments 0 0
Derivative assets (see Note 5) 0 984
Total assets 636,197 592,856
Derivative liabilities (see Note 5) 750 815
Cash settled awards (see Note 7) 0 0
Total liabilities 750 815
Level 3 [Member] | US Government and Agency [Member] | Fair Value Measurements Recurring [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Fixed maturities 0 0
Level 3 [Member] | Non-US Government [Member] | Fair Value Measurements Recurring [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Fixed maturities 0 0
Level 3 [Member] | Corporate Debt [Member] | Fair Value Measurements Recurring [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Fixed maturities 0 0
Level 3 [Member] | Agency RMBS [Member] | Fair Value Measurements Recurring [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Fixed maturities 0 0
Level 3 [Member] | CMBS [Member] | Fair Value Measurements Recurring [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Fixed maturities 3,933 4,018
Level 3 [Member] | Non-Agency RMBS [Member] | Fair Value Measurements Recurring [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Fixed maturities 0 0
Level 3 [Member] | ABS [Member] | Fair Value Measurements Recurring [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Fixed maturities 30,883 30,799
Level 3 [Member] | Municipals [Member] | Fair Value Measurements Recurring [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Fixed maturities 0 0
Level 3 [Member] | Common Stock [Member] | Fair Value Measurements Recurring [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Equity securities 0 0
Level 3 [Member] | Exchange-Traded Funds [Member] | Fair Value Measurements Recurring [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Equity securities 0 0
Level 3 [Member] | Non-U.S. Bond Mutual Funds [Member] | Fair Value Measurements Recurring [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Equity securities 0 0
Level 3 [Member] | Hedge Funds [Member] | Fair Value Measurements Recurring [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Other investments 476,808 461,055
Level 3 [Member] | Direct Lending Funds [Member] | Fair Value Measurements Recurring [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Other investments 33,467 22,134
Level 3 [Member] | CLO-Equities [Member] | Fair Value Measurements Recurring [Member]
    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Other investments $ 91,106 $ 73,866