Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Sep. 27, 2024	Sep. 29, 2023	Sep. 30, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 596.0	$ 982.8	$ 1,275.2
Other comprehensive income (loss), net of tax:
Fair value of investments	0.2	0.0	(0.2)
Pension adjustments	(0.2)	(0.8)	3.3
Comprehensive income	$ 596.0	$ 982.0	$ 1,278.3