Acquisition (Details) - GLT Acquisition [Member] - Berry Global Group, Inc. [Member] - USD ($) $ in Millions		3 Months Ended	9 Months Ended
Nov. 04, 2024	Jun. 29, 2024	Jun. 28, 2025	Jun. 29, 2024
Acquisition [Abstract]
Inventory step up	$ 12
Pro forma net sales		$ 885	$ 2,477	$ 2,610
Pro forma net loss		$ (20)	$ (131)	$ (80)

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