Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Statement of Comprehensive Income [Abstract]
Net earnings	$ 392	$ 128	$ 616	$ 198
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Marketable securities	(4)	4	(3)	7
Pension plans	(3)	1	10	0
Unrealized gains on designated hedges	10	(9)	11	(12)
Financial statement translation	87	(33)	(195)	4
Total other comprehensive (loss) income, net of tax	90	(37)	(177)	(1)
Comprehensive income	$ 482	$ 91	$ 439	$ 197