Borrowings and Credit Arrangements - Company's Borrowings (Detail) - USD ($) $ in Millions	Sep. 24, 2022	Sep. 25, 2021
Debt Instrument [Line Items]
Current debt obligations, net of debt discount	$ 15.0	$ 313.0
Total long-term debt obligations	2,808.4	2,712.2
Total debt obligations	2,823.4	3,025.2
Term Loan
Debt Instrument [Line Items]
Current debt obligations, net of debt discount	15.0	0.0
Long term debt obligations. excluding convertible notes	1,475.7	1,382.3
Securitization Program
Debt Instrument [Line Items]
Current debt obligations, net of debt discount	0.0	248.5
2028 Senior Notes
Debt Instrument [Line Items]
Long term debt obligations. excluding convertible notes	396.1	395.4
Other Debt Obligations
Debt Instrument [Line Items]
Current debt obligations, net of debt discount	0.0	64.5
2029 Senior Notes
Debt Instrument [Line Items]
Long term debt obligations. excluding convertible notes	$ 936.6	$ 934.5

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