Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Statement of Comprehensive Income [Abstract]
Net earnings including noncontrolling interests	$ 238	$ 566	$ 472	$ 962
Other Comprehensive Income (Loss), before Tax
Foreign currency translation adjustment, before tax	94	(402)	15	(191)
Pension and other postretirement benefit liabilities adjustment, before tax	(4)	13	3	15
Deferred gain (loss) on hedging activities, before tax			(63)	(89)
Unrealized gain (loss) on investments, before tax	7	(2)	5	(4)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax	(7)	15
Other Comprehensive Income (Loss), Tax
Foreign currency translation adjustment, tax effect	7	(19)	(3)	(22)
Pension and other postretirement benefit liabilities adjustment, tax effect	2	(1)	15	(4)
Deferred gain (loss) on hedging activities, tax effect			5	21
Unrealized gain (loss) on investments, tax effect	(1)	0	(1)	0
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax	7	(49)
Other Comprehensive Income (Loss), Net of Tax
Foreign currency translation adjustment, net of tax	101	(421)	12	(213)
Pension and other postretirement benefit liabilities adjustment, net of tax	(2)	12	18	11
Deferred gain (loss) on hedging activities, net of tax			(58)	(68)
Unrealized gain (loss) on investments, net of tax	6	(2)	4	(4)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax	14	(64)
Other comprehensive income (loss)	112	(460)	(24)	(274)
Comprehensive income (loss) including noncontrolling interests	350	106	448	688
Less: Comprehensive income (loss) attributable to noncontrolling interests	3	0	4	3
Comprehensive income (loss) attributable to controlling interests	$ 347	$ 106	$ 444	$ 685