Debt and Receivables Securitization - Summary of Long-term Debt and Short-term Borrowings Outstanding (Parenthetical) (Detail)	9 Months Ended	12 Months Ended
	Feb. 29, 2024	May 31, 2023
4.30% Senior Notes due August 1, 2032
Debt Instrument [Line Items]
Debt, interest rate	4.30%	4.30%
Debt, maturity date	Aug. 01, 2032	Aug. 01, 2032
2.06% Series A Senior Note due August 23, 2031
Debt Instrument [Line Items]
Debt, interest rate	2.06%	2.06%
Debt, maturity date	Aug. 23, 2031	Aug. 23, 2031
2.40% Series B Senior Notes due August 23, 2034
Debt Instrument [Line Items]
Debt, interest rate	2.40%	2.40%
Debt, maturity date	Aug. 23, 2034	Aug. 23, 2034