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Warranties - Schedule of Changes in Warranty Liability (Detail) - USD ($)
$ in Millions
6 Months Ended
Apr. 30, 2024
Apr. 30, 2023
Guarantees [Abstract]    
Balance at beginning of period $ 39.1 $ 31.9
Warranty provisions 19.1 16.6
Settlements made (20.0) (15.9)
Change in liability of pre-existing warranties (1.1)  
Divestiture (Note 7) (1.1)  
Balance at end of period $ 36.0 $ 32.6