Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2017	Mar. 31, 2016
Statement of Comprehensive Income [Abstract]
Net earnings		$ 592	$ 731
Other comprehensive income (loss) before income taxes:
Unrealized foreign currency translation gains (losses) during period		375	689
Unrealized gains (losses) on investment securities:
Unrealized holding gains (losses) on investment securities during period		(526)	2,689
Reclassification adjustment for realized (gains) losses on investment securities included in net earnings		16	(77)
Unrealized gains (losses) on derivatives during period		2	3
Pension liability adjustment during period		(2)	(2)
Total other comprehensive income (loss) before income taxes		(135)	3,302
Income tax expense (benefit) related to items of other comprehensive income (loss)		(137)	991
Other comprehensive income (loss), net of income taxes	[1]	2	2,311
Total comprehensive income (loss)		$ 594	$ 3,042

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