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Debt, Derivatives and Hedging Activities - Interest Rate Lock Agreements (Details) - USD ($) $ in Thousands	Aug. 31, 2021	May 31, 2021
Interest Rate Contract, 2020
Derivatives, Fair Value [Line Items]
Notional amount	$ 950,000
Interest Rate Contract, 2019
Derivatives, Fair Value [Line Items]
Notional amount	500,000
Other assets, net \| Interest Rate Contract, 2020
Derivatives, Fair Value [Line Items]
Derivative assets	18,335	$ 40,400
Other assets, net \| Interest Rate Contract, 2019
Derivatives, Fair Value [Line Items]
Derivative assets	0	0
Current accrued liabilities \| Interest Rate Contract, 2020
Derivatives, Fair Value [Line Items]
Derivative assets	10,264
Current accrued liabilities \| Interest Rate Contract, 2019
Derivatives, Fair Value [Line Items]
Derivative assets	$ 78,472
Long-term accrued liabilities \| Interest Rate Contract, 2020
Derivatives, Fair Value [Line Items]
Derivative liabilities		0
Long-term accrued liabilities \| Interest Rate Contract, 2019
Derivatives, Fair Value [Line Items]
Derivative liabilities		$ 61,657