Consolidated Balance Sheets (Parenthetical) (USD $) In Millions, except Share data in Thousands, unless otherwise specified	Sep. 30, 2011	Dec. 31, 2010
Securities available for sale, Equity securities, cost	$ 22	$ 22
Common stock, par value	$ 0.10	$ 0.10
Common stock, shares authorized	1,900,000	1,900,000
Common stock, shares issued	663,478	662,660
Securities held to maturity, Fixed maturities, fair value	40,111	30,469
Investments other than Consolidated Variable Interest Entities
Securities available for sale, Fixed maturities, amortized cost	43,978	43,133
Securities available for sale, Perpetual securities, amortized cost	5,870	6,209
Securities held to maturity, Fixed maturities, fair value	39,577	29,899
Variable Interest Entity, Consolidated
Securities available for sale, Fixed maturities, amortized cost	4,903	4,969
Securities available for sale, Perpetual securities, amortized cost	1,634	1,618
Securities held to maturity, Fixed maturities, fair value	534	570
Derivatives from consolidated VIEs, assets	407	564
Derivatives from consolidated VIEs, liabilities	$ 608	$ 741

This item represents the aggregate amortized cost of investments in equity securities as of the balance sheet date and which are categorized as available-for-sale.

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This item represents the aggregate amortized cost of investments in perpetual securities as of the balance sheet date and which are categorized as available-for-sale.

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This item represents the cost of debt securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

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Face amount or stated value of common stock per share; generally not indicative of the fair market value per share.

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The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

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Fair values as of the balance sheet date of all assets resulting from contracts that meet the criteria of being accounted for as derivative instruments, net of the effects of master netting arrangements.

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Fair values as of the balance sheet date of all liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments, net of the effects of master netting arrangements.

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This item represents the aggregate fair value of investments in debt securities as of the balance sheet date and which are categorized as held-to-maturity.

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