Consolidated Statements of Stockholders' Equity (Unaudited) (USD $) In Millions	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss) [Member]	Accumulated Other Comprehensive Income (Loss) Net Unrealized Investment Gains (Losses)	Accumulated Other Comprehensive Income (Loss) Other-Than-Temporary Impairments	Accumulated Other Comprehensive Income (Loss) Foreign Currency Translation Adjustments
Beginning Balance at Dec. 31, 2010 (Scenario, Previously Reported [Member])	$ 7,951	$ 86	$ 6,719	$ 934		$ 388	$ (51)	$ (125)
Beginning Balance at Dec. 31, 2010	7,479	86	6,719	457		393	(51)	(125)
Capital contribution	1		1
Return of capital	(47)		(47)
Net income (loss)	921			921
Net income (loss) at Jan. 01, 2011 (Scenario, Previously Reported [Member])	921
Other comprehensive income (loss), net of income tax	1,575					1,591	(17)	1
Ending Balance at Sep. 30, 2011	9,929	86	6,673	1,378		1,984	(68)	(124)
Beginning Balance at Dec. 31, 2011	9,703	86	6,673	1,173		1,984	(74)	(139)
Dividend of subsidiary (Note 2)	(290)			(347)	57	(2)		59
Capital contribution	19		19
Net income (loss)	513			513
Other comprehensive income (loss), net of income tax	697					635	26	36
Ending Balance at Sep. 30, 2012	$ 10,642	$ 86	$ 6,692	$ 1,339		$ 2,617	$ (48)	$ (44)