Derivative Instruments - Effect of Derivative Instruments on Accumulated Other Comprehensive Loss and Statements of Income (Detail) - USD ($) $ in Millions	12 Months Ended
Aug. 31, 2026	Aug. 31, 2025	Aug. 31, 2024
Cash Flow Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in OCI on derivatives	$ 19.4	$ 8.5	$ 3.2
Gain (loss) reclassified from AOCL	14.5	16.8	18.7
Cash Flow Hedging \| Interest and Foreign Exchange
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in OCI on derivatives	10.2	6.9	0.4
Cash Flow Hedging \| Foreign Exchange Contracts \| Sales
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in OCI on derivatives	(0.5)	1.5	3.4
Gain (loss) reclassified from AOCL	0.3	3.9	2.5
Cash Flow Hedging \| Foreign Exchange Contracts \| Cost of Revenue
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in OCI on derivatives	9.7	0.1	(0.6)
Gain (loss) reclassified from AOCL	6.2	0.1	(0.5)
Cash Flow Hedging \| Interest Rate Swap Contracts \| Interest and Foreign Exchange
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) reclassified from AOCL	8.0	12.8	16.7
Not Designated as Hedging Instrument \| Foreign Exchange Contracts
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in income on derivatives	$ (0.1)	$ (0.3)	$ 0.1
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Interest And Foreign Exchange Net	Interest And Foreign Exchange Net	Interest And Foreign Exchange Net

Derivative instruments gain (loss) reclassified from accumulated oci into income, net.

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- Definition

Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

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Indicates line item in statement of income or comprehensive income that includes gain (loss) from derivative.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount, before tax and reclassification, of gain (loss) from derivative instrument designated and qualifying cash flow hedge included in assessment of hedge effectiveness.

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