Consolidated and Combined Statements of Changes in Stockholders’ Equity - USD ($) $ in Millions	Total	Berry Net Investment	Additional Paid-in Capital	Other Comprehensive Income (Loss) - Currency Translation	Retained Loss
Beginning balance at Sep. 30, 2023	$ 2,390	$ 2,561	$ 0	$ (171)	$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(8)	(8)
Other comprehensive income (loss)	39			39
Cash distribution to Berry	(5)	(5)
Ending balance at Dec. 30, 2023	2,416	2,548	0	(132)	0
Beginning balance at Sep. 28, 2024	2,139	2,307	0	(168)	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(60)				(60)
Other comprehensive income (loss)	(71)			(71)
Cash distribution to Berry	(1,111)	(1,111)
Transfers from Berry, net	129	129
Distribution of Berry’s net investment	0	(1,325)	1,325
Acquisition of GLT	74		74
Share-based compensation	6		6
Ending balance at Dec. 28, 2024	$ 1,106	$ 0	$ 1,405	$ (239)	$ (60)