v3.26.1
Derivative Instruments - Fair Values of Derivative Instruments (Detail) - USD ($)
$ in Millions
May 31, 2026
Aug. 31, 2025
Designated as Hedging Instrument    
Derivatives Fair Value [Line Items]    
Asset Derivatives $ 20.0 $ 19.0
Derivative Asset, Statement of Financial Position [Extensible Enumeration] Accounts Receivable, after Allowance for Credit Loss Accounts Receivable, after Allowance for Credit Loss
Liability Derivatives $ 0.3 $ 3.6
Derivative Liability, Statement of Financial Position [Extensible Enumeration] Accounts Payable and Accrued Liabilities Accounts Payable and Accrued Liabilities
Designated as Hedging Instrument | Foreign Exchange Contracts    
Derivatives Fair Value [Line Items]    
Asset Derivatives $ 6.9 $ 5.4
Derivative Asset, Statement of Financial Position [Extensible Enumeration] Accounts Receivable, after Allowance for Credit Loss Accounts Receivable, after Allowance for Credit Loss
Liability Derivatives $ 0.2 $ 2.9
Derivative Liability, Statement of Financial Position [Extensible Enumeration] Accounts Payable and Accrued Liabilities Accounts Payable and Accrued Liabilities
Designated as Hedging Instrument | Interest Rate Swap Contracts    
Derivatives Fair Value [Line Items]    
Asset Derivatives $ 13.1 $ 13.6
Derivative Asset, Statement of Financial Position [Extensible Enumeration] Accounts Receivable, after Allowance for Credit Loss Accounts Receivable, after Allowance for Credit Loss
Liability Derivatives $ 0.1 $ 0.7
Derivative Liability, Statement of Financial Position [Extensible Enumeration] Accounts Payable and Accrued Liabilities Accounts Payable and Accrued Liabilities
Not Designated as Hedging Instrument | Foreign Exchange Contracts    
Derivatives Fair Value [Line Items]    
Asset Derivatives $ 0.5 $ 0.0
Derivative Asset, Statement of Financial Position [Extensible Enumeration] Accounts Receivable, after Allowance for Credit Loss Accounts Receivable, after Allowance for Credit Loss
Liability Derivatives $ 0.0 $ 0.0
Derivative Liability, Statement of Financial Position [Extensible Enumeration] Accounts Payable and Accrued Liabilities Accounts Payable and Accrued Liabilities