Investments (Details 22) (USD $) In Millions, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Components of Sales or Disposals of Fixed Maturity and Equity Securities
Proceeds	$ 12,235	$ 19,537	$ 47,617	$ 56,190
Gross investment gains	215	261	798	763
Gross investment losses	(123)	(158)	(613)	(663)
Total OTTI losses recognized in earnings:
Credit-related	(36)	(269)	(177)	(382)
Other	(20)	(20)	(120)	(206)
Total OTTI losses recognized in earnings	(47)	(284)	(271)	(530)
Total OTTI losses recognized in earnings	9	5	26	58
Total OTTI losses recognized in earnings	(56)	(289)	(297)	(588)
Net investment gains (losses)	36	(186)	(112)	(488)
Fixed maturity securities [Member]
Components of Sales or Disposals of Fixed Maturity and Equity Securities
Proceeds	12,004	19,368	47,023	55,216
Gross investment gains	192	252	742	680
Gross investment losses	(112)	(151)	(596)	(601)
Total OTTI losses recognized in earnings:
Credit-related	(36)	(269)	(177)	(382)
Other	(11)	(15)	(94)	(148)
Total OTTI losses recognized in earnings	(47)	(284)	(271)	(530)
Net investment gains (losses)	33	(183)	(125)	(451)
Equity Securities [Member]
Components of Sales or Disposals of Fixed Maturity and Equity Securities
Proceeds	231	169	594	974
Gross investment gains	23	9	56	83
Gross investment losses	(11)	(7)	(17)	(62)
Total OTTI losses recognized in earnings:
Credit-related	0	0	0	0
Other	(9)	(5)	(26)	(58)
Total OTTI losses recognized in earnings	(9)	(5)	(26)	(58)
Net investment gains (losses)	$ 3	$ (3)	$ 13	$ (37)

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

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Other 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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-Name Accounting Standards Codification

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

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