Related Party Transactions (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Related Party Transaction [Line Items]
Revenues	$ 938	$ 930	$ 1,756	$ 1,764
Costs of sales	712	674	1,341	1,306
Payments of dividends			96	96
P E I Group
Related Party Transaction [Line Items]
Revenues	0	16	17	38
Products purchased	0	83	51	163
P E I Group | Freight and Warehousing Costs
Related Party Transaction [Line Items]
Costs of sales	0	7	4	15
Packaging Finance Limited
Related Party Transaction [Line Items]
Payments of dividends	$ 36	$ 36	$ 72	$ 72