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Warranty Accruals - Warranty Accrual Activity (Detail) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Feb. 28, 2023
Feb. 28, 2022
Feb. 28, 2023
Feb. 28, 2022
Guarantees and Product Warranties [Abstract]        
Balance at beginning of period $ 23.7 $ 27.5 $ 24.0 $ 27.9
Charged to cost of revenue, net 1.7 5.5 2.9 6.4
Payments (1.0) (2.8) (2.6) (3.8)
Currency translation effect 0.1 (0.1) 0.2 (0.4)
Balance at end of period $ 24.5 $ 30.1 $ 24.5 $ 30.1