Derivatives and Hedging - Schedule of Derivatives Instruments for Gains or Losses Initially Recognized in AOCI in Consolidated Balance Sheet (Detail) - Derivatives Designated as Hedging Instruments - USD ($) $ in Thousands	12 Months Ended
	May 31, 2023	May 31, 2022	May 31, 2021
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Pretax gain/(loss) recognized in AOCI		$ 60,473	$ (41,813)
Pretax gain/(loss) reclassified from AOCI into income	$ 1,766	12,097	(12,616)
Interest Rate Swap | Interest (Expense) Income | Cash Flow
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Pretax gain/(loss) recognized in AOCI		4,508	(1,226)
Pretax gain/(loss) reclassified from AOCI into income, cash flow		(3,272)	(3,380)
Cross Currency Swap | Interest Income | Cash Flow
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Pretax gain/(loss) recognized in AOCI		15,494	(9,207)
Pretax gain/(loss) reclassified from AOCI into income, cash flow	$ 1,766	611	638
Cross Currency Swap | Foreign Exchange (Loss) | Cash Flow
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Pretax gain/(loss) reclassified from AOCI into income, cash flow		14,758	(9,874)
Cross Currency Swap | Gain or (loss) on sale of subsidiary | Net Investment
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Pretax gain/(loss) recognized in AOCI		$ 40,471	$ (31,380)