GOODWILL (Details) - USD ($) $ in Millions		12 Months Ended
		May. 31, 2015	May. 31, 2014
Goodwill [Line Items]
Balances at period start		$ 29,652	$ 27,343
Goodwill from acquisitions		4,613	2,295
Goodwill adjustments, net	[1]	8	14
Goodwill impairment	[2]	(186)
Balances at period end		$ 34,087	29,652
Description of goodwill impairment charge		During fiscal 2015, we recorded a $186 million goodwill impairment loss to our hardware systems products reporting unit. We considered several approaches to determine the fair value of our hardware systems reporting unit as of March 1, 2015 and concluded the most appropriate to be the income approach. The fair value of our hardware systems products reporting unit pursuant to the income approach was impacted by lower forecasted operating results for this reporting unit, primarily caused by lower forecasted revenues and our continued investment in hardware products research and development activities. We compared the implied fair value of goodwill in our hardware systems products reporting unit to its carrying value, which resulted in the $186 million goodwill impairment loss and represented the aggregate amount of goodwill for our hardware systems products reporting unit. The aggregate hardware systems reporting unit goodwill that was impaired in fiscal 2015 resulted from our acquisitions of Pillar Data Systems, Inc., Xsigo Systems, Inc., GreenBytes, Inc. and MICROS Systems, Inc. Such impairment loss was recorded to acquisition related and other expenses in our fiscal 2015 consolidated statement of operations. We did not recognize any goodwill impairment losses in fiscal 2014 or 2013.
New Software Licenses and Cloud Software Subscriptions [Member]
Goodwill [Line Items]
Balances at period start		$ 13,139	10,533
Allocation of goodwill	[3]		875
Goodwill from acquisitions		2,086	1,721
Goodwill adjustments, net	[1]	(8)	10
Balances at period end		15,217	13,139
Software License Updates and Product Support [Member]
Goodwill [Line Items]
Balances at period start		12,472	12,474
Goodwill from acquisitions		1,991	4
Goodwill adjustments, net	[1]	(2)	(6)
Balances at period end		14,461	12,472
Hardware Systems Support [Member]
Goodwill [Line Items]
Balances at period start		2,082	1,259
Allocation of goodwill	[3]		380
Goodwill from acquisitions		269	436
Goodwill adjustments, net	[1]	19	7
Balances at period end		2,370	2,082
Consulting [Member]
Goodwill [Line Items]
Balances at period start		1,733	1,584
Allocation of goodwill	[3]		13
Goodwill from acquisitions		27	134
Goodwill adjustments, net	[1]	(1)	2
Balances at period end		1,759	1,733
Other, net [Member]
Goodwill [Line Items]
Balances at period start	[4]	226	1,493
Allocation of goodwill	[3],[4]		(1,268)
Goodwill from acquisitions	[4]	240
Goodwill adjustments, net	[1],[4]		1
Goodwill impairment	[2],[4]	(186)
Balances at period end	[4]	280	$ 226
Hardware Systems Products [Member]
Goodwill [Line Items]
Goodwill impairment		$ (186)

[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] During fiscal 2015, we recorded a $186 million goodwill impairment loss to our hardware systems products reporting unit. We considered several approaches to determine the fair value of our hardware systems reporting unit as of March 1, 2015 and concluded the most appropriate to be the income approach. The fair value of our hardware systems products reporting unit pursuant to the income approach was impacted by lower forecasted operating results for this reporting unit, primarily caused by lower forecasted revenues and our continued investment in hardware products research and development activities. We compared the implied fair value of goodwill in our hardware systems products reporting unit to its carrying value, which resulted in the $186 million goodwill impairment loss and represented the aggregate amount of goodwill for our hardware systems products reporting unit. Such impairment loss was recorded to acquisition related and other expenses in our fiscal 2015 consolidated statement of operations. We did not recognize any goodwill impairment losses in fiscal 2014 or 2013.

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

[4] Represents goodwill allocated to our other operating segments. The balance as of May 31, 2013 included unallocated goodwill for certain of our acquisitions that was subsequently allocated based upon the finalization of valuations during fiscal 2014.