Consolidated Statements of Comprehensive Income (Loss) (USD $) In Millions, unless otherwise specified	3 Months Ended			6 Months Ended
	Jun. 30, 2013		Jun. 30, 2012	Jun. 30, 2013		Jun. 30, 2012
Statement of Comprehensive Income [Abstract]
Net earnings	$ 889		$ 483	$ 1,781		$ 1,268
Other comprehensive income (loss) before income taxes:
Unrealized foreign currency translation gains (losses) during period	(189)		32	(377)		(68)
Unrealized gains (losses) on investment securities:
Unrealized holding gains (losses) on investment securities during period	(2,934)		(319)	(3,808)		5
Reclassification adjustment for realized (gains) losses on investment securities included in net earnings	(68)		368	(126)		497
Unrealized gains (losses) on derivatives during period	(1)		4	(8)		(8)
Pension liability adjustment during period	3		(2)	8		3
Total other comprehensive income (loss) before income taxes	(3,189)		83	(4,311)		429
Income tax expense (benefit) related to items of other comprehensive income (loss)	(698)		(89)	(756)		222
Other comprehensive income (loss), net of income taxes	(2,491)	[1]	172	(3,555)	[1]	207
Total comprehensive income (loss)	$ (1,602)		$ 655	$ (1,774)		$ 1,475

[1] All amounts in the table above are net of tax. Amounts in parentheses indicate debits.