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Notes Payable, Net - Additional Information (Detail) - USD ($) $ in Millions	Feb. 28, 2025	Aug. 31, 2024
Debt Instrument [Line Items]
Debt instrument amount outstanding	$ 1,399.8	$ 1,420.9
Leasing Nonrecourse Term Loans | Nonrecourse Senior Term Debt
Debt Instrument [Line Items]
Debt instrument amount outstanding	314.3
Leasing Nonrecourse Term Loans | Asset-Backed Term Notes
Debt Instrument [Line Items]
Debt instrument amount outstanding	$ 463.8

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