Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement of Comprehensive Income [Abstract]
Net earnings	$ 7,882	$ 5,687	$ 5,309
Foreign currency translation adjustments, net of tax expense (benefit) of $(4) in 2019, $(18) in 2018 and $34 in 2017	(98)	(391)	996
Net investment hedging activities, net of tax expense (benefit) of $22 in 2019, $40 in 2018 and $(194) in 2017	74	138	(343)
Pension and post-employment benefits, net of tax expense (benefit) of $(323) in 2019, $35 in 2018 and $(94) in 2017	(1,243)	197	(406)
Marketable security activities, net of tax expense (benefit) of $— in 2019, $— in 2018 and $(8) in 2017	10	(10)	(46)
Cash flow hedging activities, net of tax expense (benefit) of $70 in 2019, $23 in 2018 and $(26) in 2017	141	313	(342)
Other comprehensive income (loss)	(1,116)	247	(141)
Comprehensive income	$ 6,766	$ 5,934	$ 5,168