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REINSURANCE (DETAILS) (USD $)
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3 Months Ended | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
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Dec. 31, 2011
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Sep. 30, 2011
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Jun. 30, 2011
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Mar. 31, 2011
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Dec. 31, 2010
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Sep. 30, 2010
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Jun. 30, 2010
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Mar. 31, 2010
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Dec. 31, 2011
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Dec. 31, 2010
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Dec. 31, 2009
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| Premiums written: | |||||||||||
| Gross | $ 4,096,153,000 | $ 3,750,536,000 | $ 3,587,295,000 | ||||||||
| Ceded | (676,719,000) | (602,996,000) | (770,866,000) | ||||||||
| Net | 3,419,434,000 | 3,147,540,000 | 2,816,429,000 | ||||||||
| Premiums Earned: | |||||||||||
| Gross | 3,973,956,000 | 3,632,177,000 | 3,540,298,000 | ||||||||
| Ceded | (658,995,000) | (684,767,000) | (748,534,000) | ||||||||
| Net | 846,753,000 | 839,992,000 | 840,014,000 | 788,201,000 | 757,318,000 | 758,873,000 | 735,027,000 | 696,192,000 | 3,314,961,000 | 2,947,410,000 | 2,791,764,000 |
| Reinsurance recoverable on unpaid and paid losses | |||||||||||
| Ceded losses and loss expenses | 450,000,000 | 425,000,000 | 319,000,000 | ||||||||
| Provision for unrecoverable reinsurance | $ 18,000,000 | $ 17,000,000 | $ 18,000,000 | $ 17,000,000 | |||||||
| Percentage of gross reinsurance recoverables collectable with reinsurers rated A- or better by AM Best | 98.60% | 97.90% | 98.60% | 97.90% | |||||||