Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Statement of Comprehensive Income [Abstract]
Net earnings including noncontrolling interests	$ 472	$ 238	$ 863	$ 472
Other Comprehensive Income (Loss), before Tax
Foreign currency translation adjustment, before tax	(34)	94	(275)	15
Pension and other postretirement benefit liabilities adjustment, before tax	1	(4)	5	3
Deferred gain (loss) on hedging activities, before tax	81	14	(1)	(63)
Unrealized gain (loss) on investments, before tax	(3)	7	3	5
Other Comprehensive Income (Loss), Tax
Foreign currency translation adjustment, tax effect	28	7	(14)	(3)
Pension and other postretirement benefit liabilities adjustment, tax effect	0	2	(12)	15
Deferred gain (loss) on hedging activities, tax effect	(15)	(7)	(1)	5
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	(6)	101	(289)	12
Pension and other postretirement benefit liabilities adjustment, net of tax	1	(2)	(7)	18
Deferred gain (loss) on hedging activities, net of tax	66	7	(2)	(58)
Unrealized gain (loss) on investments, net of tax	(2)	6	2	4
Other comprehensive income (loss)	59	112	(296)	(24)
Comprehensive income (loss) including noncontrolling interests	531	350	567	448
Less: Comprehensive income (loss) attributable to noncontrolling interests	3	3	7	4
Comprehensive income (loss) attributable to controlling interests	$ 528	$ 347	$ 560	$ 444