Restructuring and Other (Charges by Segment and Type) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Restructuring Cost and Reserve [Line Items]
Restructuring	$ 22	$ 25	$ 18
Termination benefits
Restructuring Cost and Reserve [Line Items]
Restructuring	18	17	15
Other exit costs
Restructuring Cost and Reserve [Line Items]
Restructuring	4	8	3
Non-reportable segments
Restructuring Cost and Reserve [Line Items]
Restructuring	5	5	8
Operating segments | Americas Beverage
Restructuring Cost and Reserve [Line Items]
Restructuring	1	4	3
Operating segments | European Beverage
Restructuring Cost and Reserve [Line Items]
Restructuring	0	1	0
Operating segments | European Food
Restructuring Cost and Reserve [Line Items]
Restructuring	4	4	4
Operating segments | Asia Pacific
Restructuring Cost and Reserve [Line Items]
Restructuring	3	5	3
Operating segments | Transit Packaging
Restructuring Cost and Reserve [Line Items]
Restructuring	6	3	0
Corporate
Restructuring Cost and Reserve [Line Items]
Restructuring	$ 3	$ 3	$ 0