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Restructuring and Other (Narrative) (Details) $ in Millions	3 Months Ended							12 Months Ended
	Dec. 31, 2020 USD ($)	Sep. 30, 2020 USD ($)	Jun. 30, 2020 USD ($)	Mar. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Jun. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($) facility
Restructuring Cost and Reserve [Line Items]
Restructuring charges (benefit)	$ 14	$ 10	$ 3	$ 7	$ 15	$ 45	$ 4
Other costs / (income)								$ 9	$ (41)	$ (2)
Gain (loss) on restructuring								(2)	7	$ 5
Number of facilities closed | facility										2
Settled Litigation | Mivisa
Restructuring Cost and Reserve [Line Items]
Litigation settlement expense										$ 2
Gain on settlement of litigation										6
Asia Pacific | CHINA
Restructuring Cost and Reserve [Line Items]
Restructuring accrual	$ 20							20
Impaired assets sales | Asia Pacific
Restructuring Cost and Reserve [Line Items]
Gain (loss) on restructuring									13
Write-down of carrying value fixed assets
Restructuring Cost and Reserve [Line Items]
Restructuring charges (benefit)										13
Termination benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charges (benefit)									18	12
Termination benefits | Asia Pacific
Restructuring Cost and Reserve [Line Items]
Restructuring charges (benefit)										5
Headcount Reductions
Restructuring Cost and Reserve [Line Items]
Restructuring charges (benefit)									14
Indirect Taxes Paid
Restructuring Cost and Reserve [Line Items]
Other costs / (income)									50
Pre-Acquisition Related Litigation Settlement
Restructuring Cost and Reserve [Line Items]
Other costs / (income)									7
Restructuring Actions Related to Current And Prior Period
Restructuring Cost and Reserve [Line Items]
Other costs / (income)										$ 8
Transit Packaging
Restructuring Cost and Reserve [Line Items]
Restructuring charges (benefit)								$ 19
Fire at production facility | Asia Pacific
Restructuring Cost and Reserve [Line Items]
Gain (loss) on restructuring									$ (6)

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