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Fair Value Of Financial Instruments (Changes In Fair Value Included In The Company's Consolidated Statements Of Operations) (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 31, 2012 | Mar. 31, 2011
Fixed-Maturity Securities Held At Fair Value [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Net gains (losses) on financial instruments at fair value and foreign exchange | $ (1) | $ 213
Other Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Net gains (losses) on financial instruments at fair value and foreign exchange | (39) | 43
Residential Mortgage Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Net gains (losses) on financial instruments at fair value and foreign exchange | 18 | 101
Other Assets [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Net gains (losses) on financial instruments at fair value and foreign exchange |  | (40)
Long-Term Debt [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Net gains (losses) on financial instruments at fair value and foreign exchange | (7) | (367)
Loan Repurchase Commitments [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Net gains (losses) on financial instruments at fair value and foreign exchange |  | $ 32

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- Definition Change in the fair value of and realized gains and losses on financial instruments and foreign exchange included in earnings. + References No definition available. + Details
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- Details
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