GOODWILL (Details) - USD ($) $ in Millions		12 Months Ended
		May 31, 2016	May 31, 2015		May 31, 2014
Goodwill [Line Items]
Balances at period start		$ 34,087	$ 29,652
Goodwill from acquisitions		518	4,613
Goodwill adjustments, net	[1]	(15)	8
Goodwill impairment		0	(186)	[2]	$ 0
Balances at period end		$ 34,590	34,087		29,652
Description of goodwill impairment charge		During fiscal 2015, we recorded a $186 million goodwill impairment loss to our hardware products reporting unit. We considered several approaches to determine the fair value of our hardware products reporting unit as of March 1, 2015 and concluded the most appropriate to be the income approach. The fair value of our hardware 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 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 products reporting unit. The aggregate hardware products 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 2016 or fiscal 2014.
Cloud Software and On-Premise Software [Member]
Goodwill [Line Items]
Balances at period start		$ 15,217	13,139
Goodwill from acquisitions		518	2,086
Goodwill adjustments, net	[1]	12	(8)
Balances at period end		15,747	15,217		13,139
Software License Updates and Product Support [Member]
Goodwill [Line Items]
Balances at period start		14,461	12,472
Goodwill from acquisitions			1,991
Goodwill adjustments, net	[1]	(22)	(2)
Balances at period end		14,439	14,461		12,472
Hardware Support [Member]
Goodwill [Line Items]
Balances at period start		2,370	2,082
Goodwill from acquisitions			269
Goodwill adjustments, net	[1]	(3)	19
Balances at period end		2,367	2,370		2,082
Consulting [Member]
Goodwill [Line Items]
Balances at period start		1,759	1,733
Goodwill from acquisitions			27
Goodwill adjustments, net	[1]		(1)
Balances at period end		1,759	1,759		1,733
Other [Member]
Goodwill [Line Items]
Balances at period start	[3]	280	226
Goodwill from acquisitions	[3]		240
Goodwill adjustments, net	[1],[3]	(2)
Goodwill impairment	[2],[3]		(186)
Balances at period end	[3]	$ 278	280		$ 226
Hardware Products [Member]
Goodwill [Line Items]
Goodwill impairment			$ (186)

[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).

[2] During fiscal 2015, we recorded a $186 million goodwill impairment loss to our hardware products reporting unit. We considered several approaches to determine the fair value of our hardware products reporting unit as of March 1, 2015 and concluded the most appropriate to be the income approach. The fair value of our hardware 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 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 products reporting unit. The aggregate hardware products 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 2016 or fiscal 2014.

[3] Represents goodwill allocated to our other operating segments.