Debt, Derivatives and Hedging Activities - Schedule of Debt Outstanding (Details) - USD ($) $ in Thousands	6 Months Ended
	Nov. 30, 2024	May 31, 2024	Nov. 30, 2023
Debt due within one year
Debt issuance costs	$ (318)	$ (699)
Debt due within one year	630,808	449,595
Debt due after one year
Debt issuance costs	(9,587)	(10,616)
Total debt due after one year	$ 2,026,963	2,025,934
Commercial paper
Debt Instrument [Line Items]
Interest rate	4.70%
Debt due within one year
Debt due within one year	$ 181,000	0	$ 210,000
Senior notes | Senior Notes 3.11%, 2025 Maturity
Debt Instrument [Line Items]
Effective interest rate	3.11%
Debt due within one year
Debt due within one year	$ 50,126	50,294
Senior notes | Senior Notes 3.45%, 2025 Maturity
Debt Instrument [Line Items]
Stated interest rate	3.45%
Debt due within one year
Debt due within one year	$ 400,000	400,000
Senior notes | Senior Notes, 3.70%, 2027 Maturity
Debt Instrument [Line Items]
Stated interest rate	3.70%
Debt due after one year
Debt due after one year, gross	$ 1,000,000	1,000,000
Senior notes | Senior Notes 4.00%, 2032 Maturity
Debt Instrument [Line Items]
Stated interest rate	4.00%
Debt due after one year
Debt due after one year, gross	$ 800,000	800,000
Senior notes | Senior Notes, 6.15%, 2037 Maturity
Debt Instrument [Line Items]
Stated interest rate	6.15%		6.15%
Debt due after one year
Debt due after one year, gross	$ 236,550	$ 236,550