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Derivative Instruments - Fair Values of Derivative Instruments (Detail) - Designated as Hedging Instrument - USD ($)
$ in Millions
Nov. 30, 2024
Aug. 31, 2024
Derivatives Fair Value [Line Items]    
Asset Derivatives $ 28.8 $ 24.0
Derivative Asset, Statement of Financial Position [Extensible Enumeration] Accounts Receivable, after Allowance for Credit Loss Accounts Receivable, after Allowance for Credit Loss
Liability Derivatives $ 1.1 $ 1.4
Derivative Liability, Statement of Financial Position [Extensible Enumeration] Accounts Payable and Accrued Liabilities Accounts Payable and Accrued Liabilities
Foreign Exchange Contracts    
Derivatives Fair Value [Line Items]    
Asset Derivatives $ 3.3 $ 4.3
Derivative Asset, Statement of Financial Position [Extensible Enumeration] Accounts Receivable, after Allowance for Credit Loss Accounts Receivable, after Allowance for Credit Loss
Liability Derivatives $ 1.1 $ 0.1
Derivative Liability, Statement of Financial Position [Extensible Enumeration] Accounts Payable and Accrued Liabilities Accounts Payable and Accrued Liabilities
Interest rate swap contracts    
Derivatives Fair Value [Line Items]    
Asset Derivatives $ 25.5 $ 19.7
Derivative Asset, Statement of Financial Position [Extensible Enumeration] Accounts Receivable, after Allowance for Credit Loss Accounts Receivable, after Allowance for Credit Loss
Liability Derivatives   $ 1.3
Derivative Liability, Statement of Financial Position [Extensible Enumeration]   Accounts Payable and Accrued Liabilities