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Warranty Accruals - Warranty Accrual Activity (Detail) - USD ($)
$ in Millions
3 Months Ended
Nov. 30, 2023
Nov. 30, 2022
Guarantees and Product Warranties [Abstract]    
Balance at beginning of period $ 25.6 $ 24.0
Charged to cost of revenue, net 3.6 1.2
Payments (5.6) (1.6)
Currency translation effect 0.4 0.1
Balance at end of period $ 24.0 $ 23.7