Consolidated Statement of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Oct. 01, 2017	Sep. 30, 2018	Oct. 01, 2017
Statement of Comprehensive Income [Abstract]
Net earnings	$ 851	$ 764	$ 2,436	$ 2,276
Gains on cash flow hedges	61	138	40	286
Unrealized gains on marketable securities	0	1	0	8
Foreign currency translation adjustments	85	128	(130)	409
Change in retirement plans’ funded status	84	61	247	193
Other comprehensive income, pretax	230	328	157	896
Provision for income tax, net	(33)	(57)	(60)	(160)
Other comprehensive income, net of tax	197	271	97	736
Comprehensive income	$ 1,048	$ 1,035	$ 2,533	$ 3,012