Consolidated and Combined Statements of Operations - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 29, 2025	Mar. 30, 2024	Mar. 29, 2025	Mar. 30, 2024
Income Statement [Abstract]
Net sales	$ 824	$ 558	$ 1,526	$ 1,077
Costs and expenses:
Cost of goods sold	736	488	1,367	965
Selling, general and administrative	47	28	91	56
Amortization of intangibles	14	12	28	24
Transaction and other activities	23	4	55	14
Corporate expense allocation	0	5	3	9
Operating income (loss)	4	21	(18)	9
Other expense (income), net	5	1	26	(1)
Interest expense	39	2	65	2
Income (loss) before income taxes	(40)	18	(109)	8
Income tax benefit	1	4	(8)	2
Net income (loss)	$ (41)	$ 14	$ (101)	$ 6
Net income (loss) per share:
Basic (in dollars per share)	$ (1.15)	$ 0.44	$ (2.85)	$ 0.19
Diluted (in dollars per share)	$ (1.15)	$ 0.44	$ (2.85)	$ 0.19