GOODWILL (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Aug. 31, 2012
Goodwill [Line Items]
Balances at period start	$ 25,119
Goodwill from acquisitions	270
Goodwill adjustments	(101)	[1]
Balances at period end	25,288
New Software Licenses and Cloud Software Subscriptions [Member]
Goodwill [Line Items]
Balances at period start	7,367
Allocation of goodwill	2,346	[2]
Goodwill from acquisitions	270
Goodwill adjustments	(91)	[1]
Balances at period end	9,892
Software License Updates and Product Support [Member]
Goodwill [Line Items]
Balances at period start	12,479
Goodwill adjustments	(19)	[1]
Balances at period end	12,460
Hardware Systems Support [Member]
Goodwill [Line Items]
Balances at period start	1,193
Goodwill adjustments	4	[1]
Balances at period end	1,197
Other [Member]
Goodwill [Line Items]
Balances at period start	4,080	[3]
Allocation of goodwill	(2,346)	[2],[3]
Goodwill adjustments	5	[1],[3]
Balances at period end	$ 1,739	[3]

[1] Pursuant to our business combinations accounting policy, we recorded goodwill adjustments for the effect on goodwill of changes to net assets acquired during the measurement period (up to one year from the date of and acquisition). Goodwill adjustments were not significant to our previously reported operating results or financial position.

[2] Represents the allocation of goodwill to our operating segments upon completion of our intangible aset valuations.

[3] Represents goodwill allocated to our other operating segments and goodwill to be allocated to our operating segments upon completion of our intangible asset valuations, if any.