Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Statement of Comprehensive Income [Abstract]
Net earnings including noncontrolling interests	$ 344	$ 253	$ 862	$ 1,129
Other Comprehensive Income (Loss), before Tax
Foreign currency translation adjustment, before tax	(41)	(175)	(57)	(700)
Pension and other postretirement benefit liabilities adjustment, before tax	11	35	27	73
Deferred gain (loss) on hedging activities, before tax	1	(46)	(10)	(64)
Unrealized gain (loss) on investments, before tax	(28)	20	(16)	43
Other Comprehensive Income (Loss), Tax
Foreign currency translation adjustment, tax effect	5	3	18	29
Pension and other postretirement benefit liabilities adjustment, tax effect	(4)	(8)	(7)	(27)
Deferred gain (loss) on hedging activities, tax effect	3	13	3	25
Unrealized gain (loss) on investments, tax effect	1	1	(2)	(1)
Other Comprehensive Income (Loss), Net of Tax
Foreign currency translation adjustment, net of tax	(36)	(172)	(39)	(671)
Pension and other postretirement benefit liabilities adjustment, net of tax	7	27	20	46
Deferred gain (loss) on hedging activities, net of tax	4	(33)	(7)	(39)
Unrealized gain (loss) on investments, net of tax	(27)	21	(18)	42
Other comprehensive income (loss)	(52)	(157)	(44)	(622)
Comprehensive income (loss) including noncontrolling interests	292	96	818	507
Less: Comprehensive income (loss) attributable to noncontrolling interests	3	1	7	(3)
Comprehensive income (loss) attributable to controlling interests	$ 289	$ 95	$ 811	$ 510