Goodwill and Intangible Assets - Schedule of Goodwill by Reportable Segment (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 1,895	$ 1,895
Movements	0	0
Goodwill, ending balance	1,895	1,895
Reynolds Cooking & Baking
Goodwill [Roll Forward]
Goodwill, beginning balance	794	794
Movements	0	0
Goodwill, ending balance	794	794
Hefty Waste & Storage
Goodwill [Roll Forward]
Goodwill, beginning balance	505	505
Movements	0	0
Goodwill, ending balance	505	505
Hefty Tableware
Goodwill [Roll Forward]
Goodwill, beginning balance	298	298
Movements	0	0
Goodwill, ending balance	298	298
Presto Products
Goodwill [Roll Forward]
Goodwill, beginning balance	298	298
Movements	0	0
Goodwill, ending balance	$ 298	$ 298