Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Statement of Comprehensive Income [Abstract]
Net earnings including noncontrolling interests	$ 1,782	$ 1,379	$ 1,815
Other Comprehensive Income (Loss), Before tax
Foreign currency translation adjustment, before tax	(362)	(176)	(581)
Pension and other postretirement benefit liabilities adjustment, before tax	(113)	(98)	156
Deferred gain (loss) on hedging avtivities, before tax	254	(91)	57
Unrealized gain (loss) on investments, before tax	(27)	13	(4)
Other Comprehensive Income (Loss), Tax
Foreign currency translation adjustment, tax effect	97	(12)	(28)
Pension and other postretirement benefit liabilities adjustment, tax effect	16	50	(55)
Deferred gain (loss) on hedging activities, tax effect	(57)	18	(13)
Unrealized gain (loss) on investments, tax effect	0	(1)	(1)
Other Comprehensive Income (Loss), Net of Tax
Foreign currency translation adjustment, net of tax	(265)	(188)	(609)
Pension and other postretirement benefit liabilities adjustment, net of tax	(97)	(48)	101
Deferred gain (loss) on hedging activities, net of tax	197	(73)	44
Unrealized gain (loss) on investments, net of tax	(27)	12	(5)
Other comprehensive income (loss)	(192)	(297)	(469)
Comprehensive income (loss)	1,590	1,082	1,346
Less:  Comprehensive income (loss) attributable to noncontrolling interests	17	2	5
Comprehensive income (loss) attributable to controlling interests	$ 1,573	$ 1,080	$ 1,341