Supplemental Balance Sheet Information (Prepaid Expenses and Other Current Assets) (Details) - USD ($) $ in Millions	Jul. 03, 2022	Oct. 03, 2021
Prepaid Expenses and Other Current Assets [Line Items]
Income tax receivable	$ 73.1	$ 20.7
Government subsidies receivables	81.2	172.4
Other prepaid expenses and current assets	379.8	401.5
Prepaid expenses and other current assets	$ 534.1	$ 594.6