GOODWILL (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	May 31, 2013		May 31, 2012
Goodwill [Line Items]
Balances at period start	$ 25,119		$ 21,553
Goodwill from acquisitions	2,363		3,681
Goodwill adjustments	(139)	[1]	(115)	[1]
Balances at period end	27,343		25,119
Goodwill for certain of our acquisitions that will be allocated based upon the finalization of valuations	1,300
New Software Licenses and Cloud Software Subscriptions [Member]
Goodwill [Line Items]
Balances at period start	7,367		6,785
Allocation of goodwill	2,346	[2]
Goodwill from acquisitions	933		658
Goodwill adjustments	(113)	[1]	(76)	[1]
Balances at period end	10,533		7,367
Software License Updates and Product Support [Member]
Goodwill [Line Items]
Balances at period start	12,479		12,052
Goodwill from acquisitions	27		461
Goodwill adjustments	(32)	[1]	(34)	[1]
Balances at period end	12,474		12,479
Hardware Systems Support [Member]
Goodwill [Line Items]
Balances at period start	1,193		1,009
Goodwill from acquisitions	62		184
Goodwill adjustments	4	[1]
Balances at period end	1,259		1,193
Other [Member]
Goodwill [Line Items]
Balances at period start	4,080	[3]	1,707	[3]
Allocation of goodwill	(2,346)	[2],[3]
Goodwill from acquisitions	1,341	[3]	2,378	[3]
Goodwill adjustments	2	[1],[3]	(5)	[1],[3]
Balances at period end	$ 3,077	[3]	$ 4,080	[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 an 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 asset valuations.

[3] Represents goodwill allocated to our other operating segments and approximately $1.3 billion of goodwill for certain of our acquisitions that will be allocated based upon the finalization of valuations.