Condensed Consolidated Statements of Comprehensive Income (Unaudited) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Comprehensive Income
Net income	$ (101)	$ 33	$ (5)	$ 534
Other comprehensive income (loss)
Change in net unrealized gain / loss on securities	747	565	988	887
Change in OTTI losses recognized in other comprehensive income	13	(4)	5	1
Change in net gain / loss on cash-flow hedging instruments	81	71	28	3
Change in foreign currency translation adjustments	56	55	(80)	26
Change in pension and other postretirement plan adjustments	31	26	64	48
Total other comprehensive income	928	713	1,005	965
Total comprehensive income	$ 827	$ 746	$ 1,000	$ 1,499