Employee Stock Purchase and Stock Incentive Plans - Schedule of Stock Incentive Plans (Details) $ in Millions	12 Months Ended
	Sep. 26, 2025 USD ($) shares	Sep. 27, 2024 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)	30,950,000
Number of remaining shares reserved for issuance (in shares)	3,328,937
Number of shares available for future awards (in shares)	3,328,937	3,273,982
Fair value of awards not yet recognized | $	$ 142.1
2023 SIP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)	29,850,000
Number of remaining shares reserved for issuance (in shares)	3,229,104
Number of shares available for future awards (in shares)	3,229,104	3,161,188
2023 SIP | Other Than Option Stock Appreciation Rights SARS
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award number of shares, fungible share basis (in shares)	1.92
Award number of shares, non-fungible share basis (in shares)	1
2023 SIP | Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of awards not yet recognized | $	$ 74.4
Exercisable options outstanding, weighted average remaining contractual life (years)	1 year 10 months 24 days
1999 ODSP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)	1,100,000
Number of remaining shares reserved for issuance (in shares)	99,833
Number of shares available for future awards (in shares)	99,833	112,794
Award number of shares, non-fungible share basis (in shares)	1