NOTES PAYABLE AND OTHER BORROWINGS - Summary of Senior Notes (Parenthetical) (Details) $ in Millions	6 Months Ended
	Nov. 30, 2025 USD ($)
Fixed-Rate Senior Notes Due September 2030 [Member]
Debt Instrument [Line Items]
Senior notes, par value	$ 3,000
Stated interest rate percentage	4.45%
Maturity date	Sep. 26, 2030
Fixed-Rate Senior Notes Due September 2032 [Member]
Debt Instrument [Line Items]
Senior notes, par value	$ 3,000
Stated interest rate percentage	4.80%
Maturity date	Sep. 26, 2032
Fixed-Rate Senior Notes Due September 2035 [Member]
Debt Instrument [Line Items]
Senior notes, par value	$ 4,000
Stated interest rate percentage	5.20%
Maturity date	Sep. 26, 2035
Fixed-Rate Senior Notes Due September 2045 [Member]
Debt Instrument [Line Items]
Senior notes, par value	$ 2,500
Stated interest rate percentage	5.875%
Maturity date	Sep. 26, 2045
Fixed-Rate Senior Notes Due September 2055 [Member]
Debt Instrument [Line Items]
Senior notes, par value	$ 3,500
Stated interest rate percentage	5.95%
Maturity date	Sep. 26, 2055
Fixed-Rate Senior Notes Due September 2065 [Member]
Debt Instrument [Line Items]
Senior notes, par value	$ 2,000
Stated interest rate percentage	6.10%
Maturity date	Sep. 26, 2065