Segment Reporting - Net Revenues by Segment (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Net revenues	$ 6,913	$ 6,355	$ 6,062	$ 6,538	$ 6,773	$ 6,288	$ 6,112	$ 6,765	$ 25,868	$ 25,938	$ 25,896
Latin America
Segment Reporting Information [Line Items]
Net revenues									3,018	3,202	3,566
AMEA
Segment Reporting Information [Line Items]
Net revenues									5,770	5,729	5,739
Europe
Segment Reporting Information [Line Items]
Net revenues									9,972	10,122	9,794
North America
Segment Reporting Information [Line Items]
Net revenues									$ 7,108	$ 6,885	$ 6,797