Consolidated and Combined Statements of Changes in Stockholders’ Equity - USD ($) $ in Millions	Berry Net Investment [Member]	Additional Paid-in Capital [Member]	Other Comprehensive Income (Loss) - Currency Translation [Member]	Retained Loss [Member]	Total
Beginning balance at Sep. 30, 2023	$ 2,561	$ 0	$ (171)	$ 0	$ 2,390
Net income (loss)	25				25
Other comprehensive income (loss)			(19)		(19)
Transfers from parent, net	(2)				(2)
Ending balance at Jun. 29, 2024	2,584	0	(190)	0	2,394
Beginning balance at Mar. 30, 2024	2,583	0	(153)	0	2,430
Net income (loss)	19				19
Other comprehensive income (loss)			(37)		(37)
Transfers from parent, net	(18)				(18)
Ending balance at Jun. 29, 2024	2,584	0	(190)	0	2,394
Beginning balance at Sep. 28, 2024	2,307	0	(168)	0	2,139
Net income (loss)				(119)	(119)
Other comprehensive income (loss)			4		4
Transfers to Berry, net	(1,111)				(1,111)
October net investment	129				129
Distribution of Berry’s net investment	(1,325)	1,325			0
Acquisition of GLT		74			74
Share-based compensation		15			15
Other		0			0
Ending balance at Jun. 28, 2025	0	1,414	(164)	(119)	1,131
Beginning balance at Mar. 29, 2025	0	1,408	(214)	(101)	1,093
Net income (loss)				(18)	(18)
Other comprehensive income (loss)			50		50
Share-based compensation		5			5
Other		1			1
Ending balance at Jun. 28, 2025	$ 0	$ 1,414	$ (164)	$ (119)	$ 1,131