|
FAIR VALUE MEASUREMENTS (DETAILS 2) (USD $)
In Thousands, unless otherwise specified
|
Dec. 31, 2011
|
Dec. 31, 2010
|
| Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |
|
|
| Fixed maturities |
$ 10,940,100 |
$ 10,482,897 |
| Equity securities |
677,560 |
349,254 |
| Other investments |
699,320 |
519,296 |
| Other assets (see Note 7) |
38,175 |
6,641 |
| Other liabilities (see Note 7) |
2,035 |
14,986 |
|
Fair Value Measurements Recurring [Member]
|
|
|
| Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |
|
|
| Fixed maturities |
10,940,100 |
10,482,897 |
| Equity securities |
677,560 |
349,254 |
| Other investments |
699,320 |
519,296 |
| Other assets (see Note 7) |
38,175 |
6,641 |
| Total assets |
12,355,155 |
11,358,088 |
| Other liabilities (see Note 7) |
2,035 |
14,986 |
|
US Government and Agency [Member]
|
|
|
| Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |
|
|
| Fixed maturities |
1,148,267 |
860,120 |
|
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 |
1,148,267 |
860,120 |
|
Non-US Government [Member]
|
|
|
| Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |
|
|
| Fixed maturities |
1,212,451 |
772,798 |
|
Non-US Government [Member] | Fair Value Measurements Recurring [Member]
|
|
|
| Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |
|
|
| Fixed maturities |
1,212,451 |
772,798 |
|
Corporate Debt [Member]
|
|
|
| Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |
|
|
| Fixed maturities |
3,609,591 |
4,162,908 |
|
Corporate Debt [Member] | Fair Value Measurements Recurring [Member]
|
|
|
| Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |
|
|
| Fixed maturities |
3,609,591 |
4,162,908 |
|
Agency RMBS [Member]
|
|
|
| Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |
|
|
| Fixed maturities |
2,636,634 |
2,593,582 |
|
Agency RMBS [Member] | Fair Value Measurements Recurring [Member]
|
|
|
| Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |
|
|
| Fixed maturities |
2,636,634 |
2,593,582 |
|
CMBS [Member]
|
|
|
| Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |
|
|
| Fixed maturities |
312,691 |
474,785 |
|
CMBS [Member] | Fair Value Measurements Recurring [Member]
|
|
|
| Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |
|
|
| Fixed maturities |
312,691 |
474,785 |
|
Non-Agency RMBS [Member]
|
|
|
| Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |
|
|
| Fixed maturities |
165,713 |
244,202 |
|
Non-Agency RMBS [Member] | Fair Value Measurements Recurring [Member]
|
|
|
| Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |
|
|
| Fixed maturities |
165,713 |
244,202 |
|
ABS [Member]
|
|
|
| Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |
|
|
| Fixed maturities |
632,042 |
661,843 |
|
ABS [Member] | Fair Value Measurements Recurring [Member]
|
|
|
| Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |
|
|
| Fixed maturities |
632,042 |
661,843 |
|
Municipals [Member]
|
|
|
| Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |
|
|
| Fixed maturities |
1,222,711 |
712,659 |
|
Municipals [Member] | Fair Value Measurements Recurring [Member]
|
|
|
| Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |
|
|
| Fixed maturities |
1,222,711 |
712,659 |
|
Level 1 [Member] | Fair Value Measurements Recurring [Member]
|
|
|
| Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |
|
|
| Fixed maturities |
765,519 |
588,281 |
| Equity securities |
561,436 |
271,451 |
| Other investments |
0 |
0 |
| Other assets (see Note 7) |
0 |
0 |
| Total assets |
1,326,955 |
859,732 |
| Other liabilities (see Note 7) |
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 |
765,519 |
588,281 |
|
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 2 [Member] | Fair Value Measurements Recurring [Member]
|
|
|
| Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |
|
|
| Fixed maturities |
10,123,703 |
9,830,210 |
| Equity securities |
116,124 |
77,803 |
| Other investments |
286,516 |
0 |
| Other assets (see Note 7) |
38,175 |
6,641 |
| Total assets |
10,564,518 |
9,914,654 |
| Other liabilities (see Note 7) |
2,035 |
14,986 |
|
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 |
382,748 |
271,839 |
|
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 |
1,212,451 |
772,798 |
|
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 |
3,608,041 |
4,161,358 |
|
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 |
2,636,634 |
2,593,582 |
|
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 |
312,691 |
474,785 |
|
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 |
165,713 |
224,524 |
|
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 |
582,714 |
618,665 |
|
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 |
1,222,711 |
712,659 |
|
Level 3 [Member] | Fair Value Measurements Recurring [Member]
|
|
|
| Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |
|
|
| Fixed maturities |
50,878 |
64,406 |
| Equity securities |
0 |
0 |
| Other investments |
412,804 |
519,296 |
| Other assets (see Note 7) |
0 |
0 |
| Total assets |
463,682 |
583,702 |
| Other liabilities (see Note 7) |
0 |
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 |
1,550 |
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 |
0 |
0 |
|
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 |
19,678 |
|
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 |
49,328 |
43,178 |
|
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 |