Consolidated Statements of Comprehensive Income (Loss) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013		Mar. 31, 2012
Statement of Other Comprehensive Income [Abstract]
Net earnings	$ 892		$ 785
Other comprehensive income (loss) before income taxes:
Unrealized foreign currency translation gains (losses) during period	(188)		(100)
Unrealized gains (losses) on investment securities:
Unrealized holding gains (losses) on investment securities during period	(874)		324
Reclassification adjustment for realized (gains) losses on investment securities included in net earnings	(58)		129
Unrealized gains (losses) on derivatives during period	(7)		(12)
Pension liability adjustment during period	5		5
Total other comprehensive income (loss) before income taxes	(1,122)		346
Income tax expense (benefit) related to items of other comprehensive income (loss)	(58)		311
Other comprehensive income (loss), net of income taxes	(1,064)	[1]	35
Total comprehensive income (loss)	$ (172)		$ 820

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