Investments (Details 22) (USD $) In Millions	3 Months Ended	9 Months Ended
Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Components of Sales or Disposals of Fixed Maturity and Equity Securities
Proceeds	$ 19,537	$ 10,843	$ 56,190	$ 33,124
Gross investment gains	261	197	763	682
Gross investment losses	(158)	(143)	(663)	(480)
Total OTTI losses recognized in earnings:
Credit-related	(269)	(107)	(382)	(339)
Other	(20)	(13)	(206)	(21)
Total OTTI losses recognized in earnings	(284)	(119)	(530)	(357)
Equity securities other than temporary impairment losses recognized in earnings	(5)	(1)	(58)	(3)
Total OTTI losses recognized in earnings	(289)	(120)	(588)	(360)
Net investment gains (losses)	(186)	(66)	(488)	(158)
Fixed maturity securities [Member]
Components of Sales or Disposals of Fixed Maturity and Equity Securities
Proceeds	19,368	10,747	55,216	32,585
Gross investment gains	252	190	680	568
Gross investment losses	(151)	(136)	(601)	(469)
Total OTTI losses recognized in earnings:
Credit-related	(269)	(107)	(382)	(339)
Other	(15)	(12)	(148)	(18)
Total OTTI losses recognized in earnings	(284)	(119)	(530)	(357)
Net investment gains (losses)	(183)	(65)	(451)	(258)
Equity Securities [Member]
Components of Sales or Disposals of Fixed Maturity and Equity Securities
Proceeds	169	96	974	539
Gross investment gains	9	7	83	114
Gross investment losses	(7)	(7)	(62)	(11)
Total OTTI losses recognized in earnings:
Credit-related	0	0	0	0
Other	(5)	(1)	(58)	(3)
Equity securities other than temporary impairment losses recognized in earnings	(5)	(1)	(58)	(3)
Net investment gains (losses)	$ (3)	$ (1)	$ (37)	$ 100

Credit-related OTTI gains (losses) recognized in earnings.

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This item represents the gross profit realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities.

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The cash inflow associated with the sale of insurance policy investment assets during the period.

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The net realized gains or losses on investments during the period, not including gains or losses on securities separately or otherwise categorized as trading, available-for-sale, or held-to-maturity.

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