GOODWILL (Details) $ in Millions	3 Months Ended
	Aug. 31, 2018 USD ($)
Goodwill [Line Items]
Balances at period start	$ 43,755
Goodwill adjustments, net	(53)	[1]
Balances at period end	43,702
Cloud and License [Member]
Goodwill [Line Items]
Balances at period start	39,600
Goodwill adjustments, net	(47)	[1]
Balances at period end	39,553
Hardware [Member]
Goodwill [Line Items]
Balances at period start	2,367
Goodwill adjustments, net	0	[1]
Balances at period end	2,367
Services [Member]
Goodwill [Line Items]
Balances at period start	1,788
Goodwill adjustments, net	(6)	[1]
Balances at period end	$ 1,782

[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.