v3.26.1
Accumulated Other Comprehensive Loss - Components of Accumulated Other Comprehensive Loss (AOCL), Net of Tax (Detail) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
May 31, 2026
May 31, 2025
May 31, 2026
May 31, 2025
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Beginning balance     $ 1,697.7  
Ending balance $ 1,696.3   1,696.3  
Unrealized Gain (Loss) on Derivative Financial Instruments        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Beginning balance 13.5 $ 19.2 9.0 $ 15.2
Other comprehensive income (loss) before reclassifications 3.4 (0.9) 13.6 10.0
Amounts reclassified from AOCL (3.0) (3.4) (8.7) (10.3)
Ending balance 13.9 14.9 13.9 14.9
Foreign Currency Translation Adjustment        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Beginning balance (27.9) (58.2) (37.4) (47.0)
Other comprehensive income (loss) before reclassifications (2.7) 15.1 6.8 3.9
Ending balance (30.6) (43.1) (30.6) (43.1)
Other        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Beginning balance (3.3) (1.8) (2.8) (2.2)
Other comprehensive income (loss) before reclassifications (0.6) 0.4 (1.1) 0.8
Ending balance (3.9) (1.4) (3.9) (1.4)
AOCL        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Beginning balance (17.7) (40.8) (31.2) (34.0)
Other comprehensive income (loss) before reclassifications 0.1 14.6 19.3 14.7
Amounts reclassified from AOCL (3.0) (3.4) (8.7) (10.3)
Ending balance $ (20.6) $ (29.6) $ (20.6) $ (29.6)