Consolidated Statements of Comprehensive Income (Loss) (USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2014		Jun. 30, 2013
Statement of Comprehensive Income [Abstract]
Net earnings	$ 810		$ 889		$ 1,542		$ 1,781
Other comprehensive income (loss) before income taxes:
Unrealized foreign currency translation gains (losses) during period	502		(189)		445		(377)
Unrealized gains (losses) on investment securities:
Unrealized holding gains (losses) on investment securities during period	1,482		(2,934)		2,881		(3,808)
Reclassification adjustment for realized (gains) losses on investment securities included in net earnings	11		(68)		9		(126)
Unrealized gains (losses) on derivatives during period	2		(1)		1		(8)
Pension liability adjustment during period	0		3		(1)		8
Total other comprehensive income (loss) before income taxes	1,997		(3,189)		3,335		(4,311)
Income tax expense (benefit) related to items of other comprehensive income (loss)	698		(698)		1,166		(756)
Other comprehensive income (loss), net of income taxes	1,299	[1]	(2,491)	[1]	2,169	[1]	(3,555)	[1]
Total comprehensive income (loss)	$ 2,109		$ (1,602)		$ 3,711		$ (1,774)

[1] All amounts in the table above are net of tax.