Total Equity and Other Comprehensive Income (Accumulated Other Comprehensive Income (Loss) Components) (Details) (USD $) In Millions	Jun. 30, 2011	Dec. 31, 2010
Total Equity and Other Comprehensive Income
Net unrealized securities gains (losses), pretax	$ 659	$ 150
Net unrealized securities gains (losses), after-tax	419	95
OTTI losses on debt securities, pretax	(834)	(1,021)
OTTI losses on debt securities, after-tax	(520)	(646)
Net unrealized gains on cash flow hedge derivatives, pretax	859	824
Net unrealized gains on cash flow hedge derivatives, after-tax	544	522
Pension, other postretirement and postemployment benefit plan adjustments, pretax	(587)	(598)
Pension, other postretirement and postemployment benefit plan adjustments, after-tax	(373)	(380)
Other, net pretax	(8)	(47)
Other ,net After-tax	(1)	(22)
Accumulated other comprehensive income (loss), pretax	89	(692)
Accumulated other comprehensive income (loss), after-tax	$ 69	$ (431)