Segment and Geographic Data - Selected Information by Reportable Segment (Details) - USD ($) $ in Millions		12 Months Ended
		Sep. 27, 2025	Sep. 28, 2024	Sep. 30, 2023
Segment and Geographic Data [Abstract]
Net sales		$ 3,204	$ 2,187	$ 2,275
Segment operating expenses	[1]	2,850	1,905	1,963
Total adjusted EBITDA		354	282	312
Reconciling items:
Goodwill and other impairment		0	172	0
Corporate expense allocation		3	21	26
Operating income (loss)		5	(141)	69
Interest expense, net and other expense (income), net		171	(6)	(3)
Income (loss) before income taxes		(166)	(135)	72
Depreciation and amortization		206	175	169
Long-lived assets		2,566	1,921
Reconciling Item [Member]
Reconciling items:
Depreciation and amortization		206	175	169
Restructuring, transaction, business optimization and other activities	[2]	94	30	24
Argentina hyperinflation	[3]	4	14	10
Goodwill and other impairment		0	172	0
Corporate expense allocation	[4]	3	21	26
Other non-cash charges	[5]	42	11	14
Americas [Member]
Segment and Geographic Data [Abstract]
Net sales		1,833	1,493	1,531
Segment operating expenses	[1]	1,592	1,270	1,285
Total adjusted EBITDA		241	223	246
Reconciling items:
Depreciation and amortization		132	123	119
Long-lived assets		1,796	1,460
Rest of World [Member]
Segment and Geographic Data [Abstract]
Net sales		1,371	694	744
Segment operating expenses	[1]	1,258	635	678
Total adjusted EBITDA		113	59	66
Reconciling items:
Depreciation and amortization		74	52	$ 50
Long-lived assets		$ 770	$ 461

[1] Segment operating expenses include primarily cost of goods sold and selling, general and administrative expenses

[2] Includes $84 million, $30 million, and $24 million of Restructuring and other charges in the fiscal year ended 2025, 2024, and 2023, respectively.

[3] Impact of hyperinflation includes the adverse impact of highly inflationary accounting for subsidiaries in Argentina where the functional currency was the Argentine Peso

[4] Consists of estimated parent-allocated charges for the period prior to merger which is required by GAAP as part of the carve-out financial statement process

[5] Includes stock compensation expense and other non-cash items, including $16 million of inventory step-up charges related to the GLT merger and $5 million of Restructuring and other expenses in the fiscal year ended 2025