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Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands | 12 Months Ended
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May 31, 2020 | May 31, 2019 | May 31, 2018
Statement of Comprehensive Income [Abstract] |  |  |
Change in fair value of interest rate lock agreements, tax benefit | $ (32,793) | $ (8,734) | $ 0
Amortization of interest rate lock agreement, tax expense | 463 | 717 | 571
Other, tax (benefit) expense | (2,802) | (1,618) | 119
Other comprehensive (loss) income, tax (benefit) expense | $ (35,132) | $ (9,635) | $ 690

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