Consolidated Statement of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 01, 2022	Jul. 02, 2021	Jul. 01, 2022	Jul. 02, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 267.3	$ 337.8	$ 973.0	$ 1,172.0
Other comprehensive income (loss), net of tax:
Fair value of investments	0.2	(0.2)	(0.2)	(0.5)
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment, after Tax	0.0	0.0	(3.3)	(0.3)
Comprehensive income	$ 267.5	$ 337.6	$ 976.1	$ 1,171.8