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Restructuring and Other - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 1	$ (4)	$ 15	$ 34
Transit Packaging
Restructuring Cost and Reserve [Line Items]
Gain on disposition of business				113
Transit Packaging \| Overhead Cost Reduction
Restructuring Cost and Reserve [Line Items]
Restructuring charges				$ 29
Payments for restructuring			9
Restructuring accrual	7		7
Transit Packaging \| Internal Reorganization and Headcount Reduction
Restructuring Cost and Reserve [Line Items]
Restructuring accrual	$ 18		$ 18