Description Of Business and Basis Of Presentation (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Dec. 29, 2023	Dec. 30, 2022
Change in Accounting Estimate [Line Items]
Depreciation	$ 64.7	$ 99.4
Operating Income (Loss)	258.3	367.0
Net income	$ 231.3	$ 309.4
Diluted (in dollars per share)	$ 1.44	$ 1.93
Service Life
Change in Accounting Estimate [Line Items]
Depreciation	$ 22.9
Operating Income (Loss)	2.6
Inventory Adjustments	20.3
Net income	$ 2.6
Diluted (in dollars per share)	$ 0.02