Changes in Accumulated Other Comprehensive Income (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019	Dec. 31, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
Document Period End Date	Mar. 31, 2020
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 366	$ 496	$ 455	$ 438
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), beginning of period	(376)
Other comprehensive income (loss)	(29)	59
Accumulated other comprehensive income (loss), end of period	(403)	(354)
Adjustment for Long-term Intercompany Transactions, Net of Tax	(2)	3
Designated as Hedging Instrument | Net Investment Hedging
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Gain (loss) on net investment hedge, net of tax	3	4
Foreign currency translation adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), beginning of period	(175)	(165)
Other comprehensive income (loss)	(44)	8
Accumulated other comprehensive income (loss), end of period	(219)	(157)
Unrealized gains (losses) on derivatives
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), beginning of period	20	(2)
Other comprehensive income (loss) before reclassifications (net of tax effect)	6	18
Reclassification to income (net of tax effect)	(2)	(2)
Accumulated other comprehensive income (loss), end of period	24	14
Pension and postretirement plans
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Accumulated other comprehensive income (loss), beginning of period	(221)	(245)
Other comprehensive income (loss) before reclassifications (net of tax effect)	11	19
Reclassification to income (net of tax effect)	2	15
Accumulated other comprehensive income (loss), end of period	(208)	(211)
Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Income (Loss) [Line Items]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	(403)	(354)	$ (376)	$ (412)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Other comprehensive income (loss)	$ (27)	$ 58