Income Taxes - Components of Deferred Tax Assets (Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Deferred tax liabilities:
Goodwill and intangible assets	$ (344)	$ (311)
Property, plant and equipment	(311)	(306)
Deferred withholding tax	(181)	(119)
Other	(75)	(63)
Deferred tax liabilities, total	(911)	(799)
Deferred tax assets:
Pension and other retiree benefits	354	375
Tax credits and tax loss carryforwards	89	48
Accrued liabilities	180	197
Stock-based compensation	95	90
Other	164	82
Total deferred tax assets	882	792
Valuation Allowance	(54)	(9)
Deferred tax assets, total	828	783
Assets:
Deferred income taxes	152	188
Liabilities:
Deferred income taxes	(235)	(204)
Net deferred income taxes	$ (83)	$ (16)