|
FAIR VALUE MEASUREMENTS (DETAILS) (USD $)
In Thousands, unless otherwise specified
|
Dec. 31, 2013
|
Dec. 31, 2012
|
| Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |
|
|
| Fixed maturities |
$ 11,986,327 |
$ 11,928,049 |
| Equity securities |
701,987 |
666,548 |
| Other investments |
1,045,810 |
843,437 |
| Short-term investments |
46,212 |
108,860 |
| Derivative assets (see Note 7) |
7,808 |
5,838 |
| Derivative liabilities (see Note 7) |
1,967 |
3,737 |
|
Fair Value Measurements Recurring [Member]
|
|
|
| Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |
|
|
| Fixed maturities |
11,986,327 |
11,928,049 |
| Equity securities |
701,987 |
666,548 |
| Other investments |
1,045,810 |
843,437 |
| Short-term investments |
46,212 |
108,860 |
| Derivative assets (see Note 7) |
7,808 |
5,838 |
| Total assets |
13,788,144 |
13,552,732 |
| Derivative liabilities (see Note 7) |
1,967 |
3,737 |
| Cash settled awards (see Note 16) |
8,693 |
0 |
| Total liabilities |
10,660 |
3,737 |
|
US Government and Agency [Member]
|
|
|
| Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |
|
|
| Fixed maturities |
1,388,698 |
1,422,885 |
|
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 |
1,388,698 |
1,422,885 |
|
Non-US Government [Member]
|
|
|
| Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |
|
|
| Fixed maturities |
1,176,382 |
1,104,576 |
|
Non-US Government [Member] | Fair Value Measurements Recurring [Member]
|
|
|
| Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |
|
|
| Fixed maturities |
1,176,382 |
1,104,576 |
|
Corporate Debt [Member]
|
|
|
| Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |
|
|
| Fixed maturities |
3,608,238 |
3,876,382 |
|
Corporate Debt [Member] | Fair Value Measurements Recurring [Member]
|
|
|
| Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |
|
|
| Fixed maturities |
3,608,238 |
3,876,382 |
|
Agency RMBS [Member]
|
|
|
| Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |
|
|
| Fixed maturities |
2,448,827 |
2,659,908 |
|
Agency RMBS [Member] | Fair Value Measurements Recurring [Member]
|
|
|
| Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |
|
|
| Fixed maturities |
2,448,827 |
2,659,908 |
|
CMBS [Member]
|
|
|
| Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |
|
|
| Fixed maturities |
797,414 |
840,084 |
|
CMBS [Member] | Fair Value Measurements Recurring [Member]
|
|
|
| Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |
|
|
| Fixed maturities |
797,414 |
840,084 |
|
Non-Agency RMBS [Member]
|
|
|
| Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |
|
|
| Fixed maturities |
67,567 |
95,199 |
|
Non-Agency RMBS [Member] | Fair Value Measurements Recurring [Member]
|
|
|
| Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |
|
|
| Fixed maturities |
67,567 |
95,199 |
|
ABS [Member]
|
|
|
| Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |
|
|
| Fixed maturities |
953,451 |
643,206 |
|
ABS [Member] | Fair Value Measurements Recurring [Member]
|
|
|
| Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |
|
|
| Fixed maturities |
953,451 |
643,206 |
|
Municipals [Member]
|
|
|
| Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |
|
|
| Fixed maturities |
1,545,750 |
1,285,809 |
|
Municipals [Member] | Fair Value Measurements Recurring [Member]
|
|
|
| Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |
|
|
| Fixed maturities |
1,545,750 |
1,285,809 |
|
Common Stock [Member]
|
|
|
| Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |
|
|
| Equity securities |
438,318 |
443,398 |
|
Common Stock [Member] | Fair Value Measurements Recurring [Member]
|
|
|
| Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |
|
|
| Equity securities |
438,318 |
443,398 |
|
Exchange-Traded Funds [Member]
|
|
|
| Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |
|
|
| Equity securities |
138,847 |
119,161 |
|
Exchange-Traded Funds [Member] | Fair Value Measurements Recurring [Member]
|
|
|
| Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |
|
|
| Equity securities |
138,847 |
119,161 |
|
Non-U.S. Bond Mutual Funds [Member]
|
|
|
| Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |
|
|
| Equity securities |
124,822 |
103,989 |
|
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 |
124,822 |
103,989 |
|
Hedge funds [Member] | Fair Value Measurements Recurring [Member]
|
|
|
| Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |
|
|
| Other investments |
949,810 |
781,002 |
|
Direct Lending Funds [Member] | Fair Value Measurements Recurring [Member]
|
|
|
| Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |
|
|
| Other investments |
22,134 |
0 |
|
CLO-Equities [Member] | Fair Value Measurements Recurring [Member]
|
|
|
| Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |
|
|
| Other investments |
73,866 |
62,435 |
|
Level 1 [Member] | Fair Value Measurements Recurring [Member]
|
|
|
| Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |
|
|
| Fixed maturities |
1,119,632 |
1,094,220 |
| Equity securities |
577,165 |
562,559 |
| Other investments |
0 |
0 |
| Short-term investments |
0 |
0 |
| Derivative assets (see Note 7) |
0 |
0 |
| Total assets |
1,696,797 |
1,656,779 |
| Derivative liabilities (see Note 7) |
0 |
0 |
| Cash settled awards (see Note 16) |
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 |
1,119,632 |
1,094,220 |
|
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 |
438,318 |
443,398 |
|
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 |
138,847 |
119,161 |
|
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 |
10,831,878 |
10,762,898 |
| Equity securities |
124,822 |
103,989 |
| Other investments |
488,755 |
421,006 |
| Short-term investments |
46,212 |
108,860 |
| Derivative assets (see Note 7) |
6,824 |
5,838 |
| Total assets |
11,498,491 |
11,402,591 |
| Derivative liabilities (see Note 7) |
1,152 |
3,737 |
| Cash settled awards (see Note 16) |
8,693 |
0 |
| Total liabilities |
9,845 |
3,737 |
|
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 |
269,066 |
328,665 |
|
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 |
1,176,382 |
1,104,576 |
|
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 |
3,608,238 |
3,874,832 |
|
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 |
2,448,827 |
2,659,908 |
|
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 |
793,396 |
835,788 |
|
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 |
67,567 |
94,089 |
|
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 |
922,652 |
579,231 |
|
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 |
1,545,750 |
1,285,809 |
|
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 |
124,822 |
103,989 |
|
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 |
488,755 |
421,006 |
|
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 |
34,817 |
70,931 |
| Equity securities |
0 |
0 |
| Other investments |
557,055 |
422,431 |
| Short-term investments |
0 |
0 |
| Derivative assets (see Note 7) |
984 |
0 |
| Total assets |
592,856 |
493,362 |
| Derivative liabilities (see Note 7) |
815 |
0 |
| Cash settled awards (see Note 16) |
0 |
0 |
| Total liabilities |
815 |
0 |
|
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 |
1,550 |
|
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 |
4,018 |
4,296 |
|
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 |
1,110 |
|
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 |
30,799 |
63,975 |
|
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 |
461,055 |
359,996 |
|
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 |
22,134 |
0 |
|
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 |
$ 73,866 |
$ 62,435 |