Fair Value - Schedule of Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - Fair Value, Measurements, Recurring - USD ($) $ in Millions	Nov. 30, 2024		May 31, 2024
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	$ 1.0		$ 3.6
Liabilities	4.0		4.4
Derivative Instruments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	1.0	[1]	3.6	[2]
Liabilities	4.0	[1]	4.4	[2]
Fair Value, Inputs, Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	1.0		3.6
Liabilities	4.0		4.4
Fair Value, Inputs, Level 2 | Derivative Instruments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	1.0	[1]	3.6	[2]
Liabilities	$ 4.0	[1]	$ 4.4	[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.