Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Statement of Comprehensive Income [Abstract]
Net earnings including noncontrolling interests	$ 1,846	$ 2,253	$ 1,354
Other Comprehensive Income (Loss), Before tax
Foreign currency translation adjustment, before tax	(962)	(954)	125
Pension and other postretirement benefit liabilities adjustment, before tax	154	(464)	411
Deferred gain (loss) on hedging avtivities, before tax	(99)	68	2
Unrealized gain (loss) on investments, before tax	20	(5)	0
Other Comprehensive Income (Loss), Tax
Foreign currency translation adjustment, tax effect	(11)	30	2
Pension and other postretirement benefit liabilities adjustment, tax effect	(47)	164	(154)
Deferred gain (loss) on hedging activities, tax effect	37	(26)	(1)
Unrealized gain (loss) on investments, tax effect	2	2	(1)
Other Comprehensive Income (Loss), Net of Tax
Foreign currency translation adjustment, net of tax	(973)	(924)	127
Pension and other postretirement benefit liabilities adjustment, net of tax	107	(300)	257
Deferred gain (loss) on hedging activities, net of tax	(62)	42	1
Unrealized gain (loss) on investments, net of tax	22	(3)	(1)
Other comprehensive income (loss)	(906)	(1,185)	384
Comprehensive income (loss)	940	1,068	1,738
Less: Comprehensive income (loss) attributable to noncontrolling interests	(4)	4	3
Comprehensive income (loss) attributable to controlling interests	$ 944	$ 1,064	$ 1,735