STOCKHOLDERS' (DEFICIT) EQUITY (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Feb. 28, 2022	Feb. 28, 2021	Feb. 28, 2022	Feb. 28, 2021
Stock-based compensation expense and valuations of stock awards [Abstract]
Total stock-based compensation	$ 674	$ 479	$ 1,900	$ 1,395
Cloud services and license support [Member]
Stock-based compensation expense and valuations of stock awards [Abstract]
Total stock-based compensation	55	33	145	99
Hardware [Member]
Stock-based compensation expense and valuations of stock awards [Abstract]
Total stock-based compensation	4	2	11	8
Services [Member]
Stock-based compensation expense and valuations of stock awards [Abstract]
Total stock-based compensation	17	15	49	41
Sales and marketing [Member]
Stock-based compensation expense and valuations of stock awards [Abstract]
Total stock-based compensation	113	82	328	233
Research and development [Member]
Stock-based compensation expense and valuations of stock awards [Abstract]
Total stock-based compensation	421	307	1,188	897
General and administrative [Member]
Stock-based compensation expense and valuations of stock awards [Abstract]
Total stock-based compensation	$ 64	$ 40	$ 179	$ 117