OPERATING SEGMENTS AND RELATED INFORMATION - Long-lived Assets by Geographic Areas (Details) - USD ($) $ in Millions	12 Months Ended
	May 31, 2024	May 31, 2023	May 31, 2022
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 51,362	$ 51,217	$ 46,710
Long-lived assets attributable to operations (Domestic)	7,718	8,004
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	21,551	22,007	$ 18,749
Long-lived assets attributable to operations (Domestic)	4,837	5,129
Belgium
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets attributable to operations (Domestic)	757	702
China
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets attributable to operations (Domestic)	501	559
Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets attributable to operations (Domestic)	$ 1,623	$ 1,614