Consolidated Statements of Comprehensive Income (Loss) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Net earnings	$ 1,964	$ 2,344	$ 1,497
Other comprehensive income (loss) before income taxes:
Unrealized foreign currency translation gains (losses) during period	(2)	131	65
Unrealized gains (losses) on investment securities:
Unrealized holding gains (losses) on investment securities during period	566	370	(342)
Reclassification adjustment for realized (gains) losses on investment securities included in net earnings	1,154	421	1,217
Unrealized gains (losses) on derivatives during period	(33)	51	0
Pension liability adjustment during period	(65)	(32)	22
Total other comprehensive income (loss) before income taxes	1,620	941	962
Income tax expense (benefit) related to items of other comprehensive income (loss)	392	(32)	351
Other comprehensive income (loss), net of income taxes	1,228	973	611
Total comprehensive income (loss)	$ 3,192	$ 3,317	$ 2,108