INTANGIBLE ASSETS (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Nov. 30, 2021	Nov. 30, 2020	Nov. 30, 2021	Nov. 30, 2020	May 31, 2021
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross		$ 11,057		$ 11,057		$ 11,003
Additions & Adjustments, net	[1]			54
Accumulated Amortization,		(9,176)		(9,176)		(8,573)
Expense		(299)	$ (345)	(603)	$ (690)
Intangible Assets, Net		1,881		1,881		2,430
Developed technology [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross		4,296		4,296		4,237
Additions & Adjustments, net	[1]			59
Accumulated Amortization,		(3,873)		(3,873)		(3,621)
Expense				(252)
Intangible Assets, Net		423		$ 423		616
Weighted Average Useful Life	[2]			3 years
Cloud services and license support agreements and related relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross		5,492		$ 5,492		5,497
Additions & Adjustments, net	[1]			(5)
Accumulated Amortization,		(4,142)		(4,142)		(3,834)
Expense				(308)
Intangible Assets, Net		1,350		1,350		1,663
Other [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross		1,269		1,269		1,269
Additions & Adjustments, net	[1]			0
Accumulated Amortization,		(1,161)		(1,161)		(1,118)
Expense				(43)
Intangible Assets, Net		$ 108		$ 108		$ 151

[1] Amounts also included any changes in intangible asset balances for the periods presented that resulted from foreign currency translations.

[2] Represents weighted-average useful lives (in years) of intangible assets acquired during fiscal 2022.