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Fair Value - Assets Measured at Fair Value on Non-Recurring Basis (Parenthetical) (Detail) - USD ($)	3 Months Ended	9 Months Ended
	Feb. 28, 2025	Feb. 28, 2026	Nov. 30, 2025	May 31, 2025
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Pre-tax gain		$ 7,000,000
Lowered net asset value			$ 500,000
Assets held for sale				$ 10,400,000
Impairment related to finance lease assets along with certain other fixed assets	$ 0
Fair value written down	$ 1,300,000