Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Statement of Comprehensive Income [Abstract]
Net income before non-controlling interests	$ 397	$ 384	$ 1,482	$ 1,354
Other comprehensive income (loss), before tax:
Foreign currency translation adjustments	127	(52)	652	(373)
Unrealized investment (losses) gains	(8)	1	11	1
(Loss) gain related to pension/post-retirement plans	(168)	82	(140)	383
Other comprehensive (loss) income, before tax	(49)	31	523	11
Income tax (credit) expense on other comprehensive income	(30)	19	(10)	80
Other comprehensive (loss) income, net of tax	(19)	12	533	(69)
Comprehensive income	378	396	2,015	1,285
Less: comprehensive income attributable to non-controlling interest	4	5	19	22
Comprehensive income attributable to the Company	$ 374	$ 391	$ 1,996	$ 1,263