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	3 Months Ended		9 Months Ended
	Feb. 28, 2022	Feb. 28, 2021	Feb. 28, 2022	Feb. 28, 2021
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Pretax gain/(loss) recognized in AOCI	$ 3,806	$ (4,916)	$ 33,984	$ (37,057)
Pretax gain/(loss) reclassified from AOCI into income	326	(1,958)	6,162	(10,600)
Interest Rate Swap | Interest (Expense) Income | Cash Flow
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Pretax gain/(loss) recognized in AOCI	1,723	27	2,554	(720)
Pretax gain/(loss) reclassified from AOCI into income, cash flow	(884)	(862)	$ (2,744)	(2,475)
Income Statement Location			Interest (expense) income
Cross Currency Swap | Interest (Expense) Income | Cash Flow
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Pretax gain/(loss) recognized in AOCI	1,263	(907)	$ 8,867	(8,211)
Pretax gain/(loss) reclassified from AOCI into income, cash flow	149	147	$ 425	498
Income Statement Location			Interest (expense) income
Cross Currency Swap | Foreign exchange gain (loss) | Cash Flow
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Pretax gain/(loss) reclassified from AOCI into income, cash flow	1,061	(1,243)	$ 8,481	(8,623)
Income Statement Location			Foreign exchange gain (loss)
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	$ 820	$ (4,036)	$ 22,563	$ (28,126)
Income Statement Location			Gain or (loss) on sale of subsidiary