Summary of Supplemental Cash Flow, Balance Sheet, and Other Required Disclosures (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	May 31, 2020	May 31, 2021
Leases [Abstract]
Operating cash outflows from operating leases	$ 69,444	$ 71,257
Leased assets obtained in exchange for operating lease obligations	61,614	69,375
Current portion of operating leases within Other Accrued Liabilities	$ 52,589	$ 58,563
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Other accrued liabilities	Other accrued liabilities
Weighted average remaining lease term for operating leases (in years)	9 years 1 month 6 days	8 years 7 months 6 days
Weighted average discount rate for operating leases	3.70%	3.40%