STOCKHOLDERS' EQUITY (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Feb. 28, 2026	Feb. 28, 2025	Feb. 28, 2026	Feb. 28, 2025
Stock-based compensation expense and valuations of stock awards [Abstract]
Total stock-based compensation	$ 1,328	$ 1,198	$ 3,608	$ 3,374
Cloud and Software [Member]
Stock-based compensation expense and valuations of stock awards [Abstract]
Total stock-based compensation	171	160	478	459
Hardware [Member]
Stock-based compensation expense and valuations of stock awards [Abstract]
Total stock-based compensation	8	8	21	21
Services [Member]
Stock-based compensation expense and valuations of stock awards [Abstract]
Total stock-based compensation	58	54	158	150
Sales and marketing [Member]
Stock-based compensation expense and valuations of stock awards [Abstract]
Total stock-based compensation	212	200	574	556
Research and development [Member]
Stock-based compensation expense and valuations of stock awards [Abstract]
Total stock-based compensation	785	675	2,100	1,902
General and administrative [Member]
Stock-based compensation expense and valuations of stock awards [Abstract]
Total stock-based compensation	$ 94	$ 101	$ 277	$ 286