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Exit Activities - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2026	Dec. 31, 2025	Mar. 31, 2025
Restructuring Cost and Reserve [Line Items]
Current liabilities held-for-sale	$ 6	$ 0
Multiple Packaging Facilities
Restructuring Cost and Reserve [Line Items]
Charges to adjust held for sale assets to estimated fair value	13
Current asset held-for-sale	19	10
Current liabilities held-for-sale	6
Gain on sale of exited property	4
Facility Closing
Restructuring Cost and Reserve [Line Items]
Exit activities	18	6
Start-Up Costs
Restructuring Cost and Reserve [Line Items]
Exit activities	0	$ 55	$ 7
Kalamazoo, Michigan and Texarkana, Texas \| Discontinued Project
Restructuring Cost and Reserve [Line Items]
Exit activities	$ 40