GOODWILL (Details) - USD ($) $ in Millions		12 Months Ended
		May 31, 2020	May 31, 2019
Goodwill [Line Items]
Balances at period start		$ 43,779	$ 43,755
Goodwill from acquisitions		74	96
Goodwill adjustments, net	[1]	(84)	(72)
Balances at period end		43,769	43,779
Cloud and License [Member]
Goodwill [Line Items]
Balances at period start		39,633	39,600
Goodwill from acquisitions		74	96
Goodwill adjustments, net	[1]	(70)	(63)
Balances at period end		39,637	39,633
Hardware [Member]
Goodwill [Line Items]
Balances at period start		2,367	2,367
Goodwill from acquisitions		0	0
Goodwill adjustments, net	[1]	0	0
Balances at period end		2,367	2,367
Services [Member]
Goodwill [Line Items]
Balances at period start		1,779	1,788
Goodwill from acquisitions		0	0
Goodwill adjustments, net	[1]	(14)	(9)
Balances at period end		$ 1,765	$ 1,779

[1] Pursuant to our business combinations accounting policy, we recorded goodwill adjustments for the effects on goodwill of changes to net assets acquired during the period that such a change is identified, provided that any such change is within the measurement period (up to one year from the date of the acquisition). Amounts also include any changes in goodwill balances for the period presented that resulted from foreign currency translations.