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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
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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 | 51 |  | $ (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 | 75 |  | $ (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 |

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- Definition Derivative instruments designated as hedges pretax gain (loss) recognized in accumulated other comprehensive income. + References No definition available. + Details
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- Definition Amount, before tax, of reclassification of gain (loss) from accumulated other comprehensive income (AOCI) for derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=121641772&loc=d3e689-108580 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=121641772&loc=d3e637-108580 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5624171-113959 + Details
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