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

6 Months Ended

Nov. 30, 2020

Nov. 30, 2019

Nov. 30, 2020

Nov. 30, 2019

Derivative Instruments And Hedging Activities Disclosures [Line Items]

Pretax gain/(loss) recognized in AOCI

$ (1,055)

$ 73

$ (32,141)

$ 1,469

Pretax gain/(loss) reclassified from AOCI into income

(611)

(8,642)

Interest Rate Swap | Interest expense | Cash Flow

Derivative Instruments And Hedging Activities Disclosures [Line Items]

Pretax gain/(loss) recognized in AOCI

(149)

(747)

Pretax gain/(loss) reclassified from AOCI into income, cash flow

(846)

$ (1,613)

Income Statement Location

Interest expense

Cross Currency Swap | Interest income | Cash Flow

Derivative Instruments And Hedging Activities Disclosures [Line Items]

Pretax gain/(loss) recognized in AOCI

$ (7,304)

Pretax gain/(loss) reclassified from AOCI into income, cash flow

160

$ 351

Income Statement Location

Interest 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

$ (7,380)

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

$ (957)

$ 73

$ (24,090)

$ 1,469

Income Statement Location

Gain or (loss) on sale of subsidiary