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Product Warranties - Product Warranty Activity (Detail) - USD ($)
$ in Millions
3 Months Ended
Dec. 25, 2021
Dec. 26, 2020
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]    
Balance at Beginning of Period $ 8.8 $ 9.9
Provisions 2.1 3.3
Settlements/ Adjustments (2.3) (3.7)
Balance at End of Period $ 8.6 $ 9.5