Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2016	Mar. 31, 2015
Statement of Comprehensive Income [Abstract]
Net earnings		$ 731	$ 663
Other comprehensive income (loss) before income taxes:
Unrealized foreign currency translation gains (losses) during period		689	9
Unrealized gains (losses) on investment securities:
Unrealized holding gains (losses) on investment securities during period		2,689	593
Reclassification adjustment for realized (gains) losses on investment securities included in net earnings		(77)	(50)
Unrealized gains (losses) on derivatives during period		3	(4)
Pension liability adjustment during period		(2)	0
Total other comprehensive income (loss) before income taxes		3,302	548
Income tax expense (benefit) related to items of other comprehensive income (loss)		991	195
Other comprehensive income (loss), net of income taxes	[1]	2,311	353
Total comprehensive income (loss)		$ 3,042	$ 1,016

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