Consolidated Statements of Comprehensive Income (Loss) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Statement of Comprehensive Income [Abstract]
Net earnings	$ 2,951		$ 3,158		$ 2,866
Other comprehensive income (loss) before income taxes:
Unrealized foreign currency translation gains (losses) during period	(1,455)		(1,588)		(287)
Unrealized gains (losses) on investment securities:
Unrealized holding gains (losses) on investment securities during period	5,947		(2,362)		1,660
Reclassification adjustment for realized (gains) losses on investment securities included in net earnings	(54)		(56)		497
Unrealized gains (losses) on derivatives during period	(17)		(10)		(22)
Pension liability adjustment during period	(76)		157		(20)
Total other comprehensive income (loss) before income taxes	4,345		(3,859)		1,828
Income tax expense (benefit) related to items of other comprehensive income (loss)	1,803		(581)		1,078
Other comprehensive income (loss), net of income taxes	2,542	[1]	(3,278)	[1]	750
Total comprehensive income (loss)	$ 5,493		$ (120)		$ 3,616

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