Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Statement of Comprehensive Income [Abstract]
Net earnings including noncontrolling interests	$ 340	$ 230
Other Comprehensive Income (Loss), before Tax
Foreign currency translation adjustment, before tax	21	202
Pension and other postretirement benefit liabilities adjustment, before tax	12	1
Deferred gain (loss) on hedging activities, before tax	3	10
Unrealized gain (loss) on investments, before tax	(6)	(33)
Other Comprehensive Income (Loss), Tax
Foreign currency translation adjustment, tax effect	3	23
Pension and other postretirement benefit liabilities adjustment, tax effect	(6)	0
Deferred gain (loss) on hedging activities, tax effect	(3)	(2)
Unrealized gain (loss) on investments, tax effect	0	(2)
Other Comprehensive Income (Loss), Net of Tax
Foreign currency translation adjustment, net of tax	24	225
Pension and other postretirement benefit liabilities adjustment, net of tax	6	1
Deferred gain (loss) on hedging activities, net of tax	0	8
Unrealized gain (loss) on investments, net of tax	(6)	(35)
Other comprehensive income (loss)	24	199
Comprehensive income (loss) including noncontrolling interests	364	429
Less: Comprehensive income (loss) attributable to noncontrolling interests	1	0
Comprehensive income (loss) attributable to controlling interests	$ 363	$ 429