Changes in Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Changes in Accumulated Other Comprehensive Loss [Abstract]
AOCI, Post-employment Benefits, net of tax	$ (614)	$ (632)
AOCI, Hedge instruments, net of tax	(22)	(25)
AOCI, Translation adjustments and other, net of tax	(948)	(800)
Accumulated other comprehensive loss	(1,584)	(1,457)
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, before Reclassification Adjustments, Net of Tax	(1)
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	2
Other comprehensive income, translation adjustments and other, before reclassificaitons, net of tax	(147)
Other comprehensive income, before reclassifications to income	(146)
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net (Gain) Loss, Net of Tax	19
Amount of Loss Reclassified from AOCI into Income (Effective Portion)	1
Reclassificaion of translation adjustments and other in AOCI into earnings, net of tax	(1)
Other comprehensive income, portion representing reclassificaitons to earnings	19
Post-employment benefits	18	60	$ (228)
Hedge instruments	3	1	0
Translation adjustments and other	(148)	(225)	(260)
Other comprehensive loss, net of tax	$ (127)	$ (164)	$ (488)

Accumulated adjustment, net of tax, that results from the process of translating subsidiary financial statements and foreign equity investments into the reporting currency from the functional currency of the reporting entity, net of reclassification of realized foreign currency translation gains or losses. Also includes other immaterial balances.

No definition available.