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Fair Value Measurements - Roll Forward (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Mar. 26, 2022
Mar. 27, 2021
Mar. 26, 2022
Mar. 27, 2021
Fair Value Disclosures [Abstract]        
Beginning balance $ 71.0 $ 86.4 $ 75.1 $ 81.8
Contingent consideration recorded at acquisition 0.0 0.0 0.0 0.0
Fair value adjustments 0.0 (14.7) (4.1) (10.1)
Payments (12.2) 0.0 (12.2) 0.0
Ending balance $ 58.8 $ 71.7 $ 58.8 $ 71.7