Consolidated Statements of Equity (Unaudited) (USD $) In Millions	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Net Unrealized Investment Gain (Loss) [Member]	Accumulated Other Comprehensive Income (Loss) Other-Than-Temporary Impairments [Member]	Accumulated Other Comprehensive Income (Loss) Foreign Currency Translation Adjustments [Member]
Beginning Balance at Dec. 31, 2008		$ 86
Cumulative effect of change in accounting principle, net of income tax	0	0	0	(34)	23	11	0
Ending Balance at Dec. 31, 2009 (Scenario, Previously Reported [Member])	6,561	86	6,719	541	(593)	(83)	(109)
Ending Balance at Dec. 31, 2009	6,561	86	6,719	507	(570)	(72)	(109)
Comprehensive income (loss):
Net income	374			374
Other comprehensive income (loss):
Unrealized gains (losses) on derivative instruments, net of income tax	16				16
Unrealized investment gains (losses), net of related offsets and income tax	1,050				1,041	9
Foreign currency translation adjustments, net of income tax	(52)						(52)
Other comprehensive income (loss)	1,014
Comprehensive income (loss)	1,388
Ending Balance at Jun. 30, 2010	7,949	86	6,719	881	487	(63)	(161)
Beginning Balance at Dec. 31, 2010	7,951	86	6,719	934	388	(51)	(125)
Return of capital (Note 6)	(52)		(52)
Comprehensive income (loss):
Net income	376			376
Other comprehensive income (loss):
Unrealized gains (losses) on derivative instruments, net of income tax	6				6
Unrealized investment gains (losses), net of related offsets and income tax	268				275	(7)
Foreign currency translation adjustments, net of income tax	20						20
Other comprehensive income (loss)	294
Comprehensive income (loss)	670
Ending Balance at Jun. 30, 2011	$ 8,569	$ 86	$ 6,667	$ 1,310	$ 669	$ (58)	$ (105)