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Asset Backed Securities - Summary of Net Carrying Amount of Assets Transferred and Related Debt (Detail) - USD ($) $ in Millions	Aug. 31, 2022	Aug. 31, 2021	Aug. 31, 2020
Assets
Restricted cash	$ 16.1	$ 24.6	$ 8.3
Equipment on operating leases, net	770.9	609.8
Liabilities
Notes payable, net	1,269.1	$ 826.5
GBX Leasing
Assets
Restricted cash	6.9
Equipment on operating leases, net	401.8
Liabilities
Notes payable, net	$ 312.8

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Including the current and noncurrent portions, aggregate carrying amount of all types of notes payable, as of the balance sheet date, with initial maturities beyond one year or beyond the normal operating cycle, if longer.

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