Fair Value - Schedule of Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - Fair Value, Measurements, Recurring - USD ($) $ in Millions	Aug. 31, 2025		May 31, 2025
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	$ 2.5		$ 5.6
Liabilities	2.5		3.7
Derivative Instruments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	2.5	[1]	5.6	[2]
Liabilities	2.5	[1]	3.7	[2]
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	2.5		5.6
Liabilities	2.5		3.7
Level 2 | Derivative Instruments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	2.5	[1]	5.6	[2]
Liabilities	$ 2.5	[1]	$ 3.7	[2]

[1] The fair value of the Company’s derivative financial instruments is based on the present value of the expected future cash flows considering the risks involved, including non-performance risk, and using discount rates appropriate for the respective maturities. Market observable, Level 2 inputs are used to determine the present value of the expected future cash flows. Refer to “Note 13 – Derivative Financial Instruments and Hedging Activities” for additional information regarding the use of derivative financial instruments.

[2] The fair value of the Company’s derivative financial instruments is based on the present value of the expected future cash flows considering the risks involved, including non-performance risk, and using discount rates appropriate for the respective maturities. Market observable, Level 2 inputs are used to determine the present value of the expected future cash flows. Refer to “Note 13 – Derivative Financial Instruments and Hedging Activities” for additional information regarding the use of derivative financial instruments.