v2.4.0.6

REINSURANCE (DETAILS) (USD $) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2011 | Sep. 30, 2011 | Jun. 30, 2011 | Mar. 31, 2011 | Dec. 31, 2010 | Sep. 30, 2010 | Jun. 30, 2010 | Mar. 31, 2010 | Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2009
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% |

X
- Definition A valuation allowance for the amount deemed uncollectible of an insurance receivable related to a policy by which an insurer indemnifies itself of some or all of the risk associated with another insurance policy. + References No definition available. + Details
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- Definition Premiums assumed and earned by another insurer as a result of reinsurance arrangements. + References No definition available. + Details
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- Definition Premiums earned on the income statement for all insurance and reinsurance contracts before subtracting any amounts ceded to another insurer. + References No definition available. + Details
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- Definition Total consideration paid and payable by direct policyholders for insurance contracts sold by the Entity during the period and premiums for all insurance assumed from other insurers, that is premiums ceded to the Entity by other insurers. + References No definition available. + Details
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- Definition The percentage of the total known and estimated amount recoverable as of the balance sheet date from reinsurers for claims paid or incurred by the ceding insurer and associated claims settlement expenses (including estimated amounts for claims incurred but not reported and policy benefits) before consideration of any related valuation allowance that is rated A- or better by A.M. Best. + References No definition available. + Details
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- Definition Total provision in the period for claims incurred and costs incurred in the claim settlement process which are to be ceded to another insurer. + References No definition available. + Details
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- Definition Total consideration paid and payable to reinsurers during the period pursuant to terms of reinsurance arrangements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 17 -Article 12 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 113 -Paragraph 27 -Subparagraph a, b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 605 -Section 50 -Paragraph 1 -Subparagraph (b),(c)(2) -URI http://asc.fasb.org/extlink&oid=6486672&loc=d3e27261-158547 + Details
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- Definition Premiums earned on the income statement for all insurance and reinsurance contracts after subtracting any amounts ceded to another insurer and adding premiums assumed from other insurers. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.13(c)) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 1 -Article 7 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 113 -Paragraph 27 -Subparagraph a, b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04.1) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 + Details
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- Definition Premiums written for all insurance and reinsurance contracts, after adding premiums assumed from other insurers and subtracting any amounts ceded to another insurer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 17 -Article 12 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 113 -Paragraph 27 -Subparagraph a, b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 605 -Section 50 -Paragraph 1 -Subparagraph (b),(c) -URI http://asc.fasb.org/extlink&oid=6486672&loc=d3e27261-158547 + Details
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