Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Dec. 27, 2024	Dec. 29, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ 162.0	$ 231.3
Other comprehensive income (loss), net of tax:
Fair value of investments	(0.1)	0.1
Pension adjustments	0.0	(0.2)
Comprehensive income	$ 161.9	$ 231.2