Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Statement of Comprehensive Income [Abstract]
Net earnings including noncontrolling interests	$ 712	$ 472	$ 1,405	$ 863
Other Comprehensive Income (Loss), before Tax
Foreign currency translation adjustment, before tax	35	(34)	329	(275)
Pension and other postretirement benefit liabilities adjustment, before tax	71	1	89	5
Deferred gain (loss) on hedging activities, before tax	82	81	183	(1)
Unrealized gain (loss) on investments, before tax	(1)	(3)	(2)	3
Other Comprehensive Income (Loss), Tax
Foreign currency translation adjustment, tax effect	8	28	(48)	(14)
Pension and other postretirement benefit liabilities adjustment, tax effect	(22)	0	(27)	(12)
Deferred gain (loss) on hedging activities, tax effect	(15)	(15)	(40)	(1)
Unrealized gain (loss) on investments, tax effect	(1)	1	(1)	(1)
Other Comprehensive Income (Loss), Net of Tax
Foreign currency translation adjustment, net of tax	43	(6)	281	(289)
Pension and other postretirement benefit liabilities adjustment, net of tax	49	1	62	(7)
Deferred gain (loss) on hedging activities, net of tax	67	66	143	(2)
Unrealized gain (loss) on investments, net of tax	(2)	(2)	(3)	2
Other comprehensive income (loss)	157	59	483	(296)
Comprehensive income (loss) including noncontrolling interests	869	531	1,888	567
Less: Comprehensive income (loss) attributable to noncontrolling interests	0	3	4	7
Comprehensive income (loss) attributable to controlling interests	$ 869	$ 528	$ 1,884	$ 560