Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Statement of Comprehensive Income [Abstract]
Net earnings	$ 1,647	$ 1,439	$ 515
Other comprehensive (loss) income, net of tax
Marketable securities	0	(3)	3
Pension plans	(13)	17	(55)
Unrealized gains (losses) on designated hedges	20	(9)	6
Financial statement translation	(129)	(390)	(440)
Total other comprehensive loss, net of tax	(122)	(385)	(486)
Comprehensive income	$ 1,525	$ 1,054	$ 29