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Fair Value Measurements - Fair Value Assets and Liabilities Measured Using Unobservable Inputs (Details) - USD ($)
$ in Millions
12 Months Ended
Sep. 24, 2022
Sep. 25, 2021
Sep. 26, 2020
Fair Value Disclosures [Abstract]      
Beginning balance $ 75.1 $ 81.8 $ 9.1
Contingent consideration recorded at acquisition 0.0 0.0 82.7
Payments/Accruals (12.2) 0.0 (10.3)
Ending balance $ 23.4 $ 75.1 $ 81.8