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Loss And Loss Adjustment Expense Reserves (Schedule Of Losses And Loss Adjustment Expense) (Details) (USD $) In Millions, unless otherwise specified | 12 Months Ended
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Dec. 31, 2011
Loss And Loss Adjustment Expense Reserves [Line Items] |
Losses and LAE related to actual and expected payments | $ 230
Recoveries of actual and expected payments | (308)
Gross losses incurred | (78)
Reinsurance | (2)
Second-Lien RMBS [Member] |
Loss And Loss Adjustment Expense Reserves [Line Items] |
Losses and LAE related to actual and expected payments | 163
Recoveries of actual and expected payments | (380)
Gross losses incurred | (217)
Reinsurance | 0
Other Loss And LAE [Member] |
Loss And Loss Adjustment Expense Reserves [Line Items] |
Losses and LAE related to actual and expected payments | 67
Recoveries of actual and expected payments | 72
Gross losses incurred | 139
Reinsurance | $ (2)

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- Definition Losses And Loss Adjustment Expenses Related To Actual And Expected Payments + References No definition available. + Details
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- Definition Losses Incurred Gross of Reinsurance + References No definition available. + Details
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- Definition The net amount in the period for future policy benefits and costs incurred under policies assumed and estimated recoupments under policies ceded. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 94-5 -Paragraph 11 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6482485&loc=d3e14764-158437 + Details
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