v3.26.3
Fair Value Measurements - Schedule of Carrying Value and Estimated Fair Value of Financial Instruments (Details) - Fair value measured on recurring basis - USD ($)
$ in Millions
Aug. 31, 2026
Aug. 31, 2025
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Total assets at fair value $ 642.3 $ 427.6
Level 1,2 and 3    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash and cash equivalents 636.3 422.5
Assets in fair value hierarchy 636.3 422.5
Level 1    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash and cash equivalents 636.3 422.5
Assets in fair value hierarchy 636.3 422.5
Total assets at fair value 636.3 422.5
Level 2    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash and cash equivalents 0.0 0.0
Assets in fair value hierarchy 0.0 0.0
Total assets at fair value 0.0 0.0
Level 3    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash and cash equivalents 0.0 0.0
Assets in fair value hierarchy 0.0 0.0
Total assets at fair value 0.0 0.0
Other investments    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Other investments $ 6.0 $ 5.1