Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement of Comprehensive Income [Abstract]
Foreign currency translation adjustments, tax	$ (5)	$ 6	$ 5
Reclassification adjustment for foreign currency translation included in “Other operating expense (income), net,” tax	29	0	0
Unrealized gains (losses), tax	(12)	0	5
Reclassification adjustment for losses (gains) included in other income (expense), net, tax	$ 0	$ 0	$ 0