Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Statement of Comprehensive Income [Abstract]
Net earnings including noncontrolling interests	$ 226	$ 408	$ 1,089	$ 880
Other Comprehensive Income (Loss), before Tax
Foreign currency translation adjustment, before tax	(154)	(251)	(429)	(236)
Pension and other postretirement benefit liabilities adjustment, before tax	(5)	7	0	10
Deferred gain (loss) on hedging activities, before tax	112	(2)	111	(65)
Unrealized gain (loss) on investments, before tax	(28)	7	(25)	12
Other Comprehensive Income (Loss), Tax
Foreign currency translation adjustment, tax effect	51	(35)	37	(38)
Pension and other postretirement benefit liabilities adjustment, tax effect	3	0	(9)	15
Deferred gain (loss) on hedging activities, tax effect	(22)	8	(23)	13
Unrealized gain (loss) on investments, tax effect	0	0	(1)	(1)
Other Comprehensive Income (Loss), Net of Tax
Foreign currency translation adjustment, net of tax	(103)	(286)	(392)	(274)
Pension and other postretirement benefit liabilities adjustment, net of tax	(2)	7	(9)	25
Deferred gain (loss) on hedging activities, net of tax	90	6	88	(52)
Unrealized gain (loss) on investments, net of tax	(28)	7	(26)	11
Other comprehensive income (loss)	(43)	(266)	(339)	(290)
Comprehensive income (loss) including noncontrolling interests	183	142	750	590
Less: Comprehensive income (loss) attributable to noncontrolling interests	2	0	9	4
Comprehensive income (loss) attributable to controlling interests	$ 181	$ 142	$ 741	$ 586