Description of Business and Basis of Presentation - Narrative (Details)			12 Months Ended
	Sep. 26, 2025 $ / shares shares	Sep. 27, 2024 $ / shares shares	Sep. 26, 2025 segment $ / shares
Business Combination [Line Items]
Number of operating segments | segment			2
Common stock, par value (in dollars per share) | $ / shares	$ 1	$ 1	$ 1
Discontinued Operations, Spinoff | SpinCo Business
Business Combination [Line Items]
Distribution to shareholders, pro rata basis (in shares) | shares		124,084,108
Common stock, par value (in dollars per share) | $ / shares		$ 0.01
Distribution to shareholders, conversion ratio (in shares) | shares	1	1