ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES (Details) - USD ($) $ in Millions	12 Months Ended
	May 31, 2016	May 31, 2015		May 31, 2014
Acquisition Related and Other Expenses [Abstract]
Transitional and other employee related costs	$ 45	$ 57		$ 27
Stock-based compensation	3	5		10
Professional fees and other, net	10	(35)		20
Business combination adjustments, net	(16)	184		(16)
Total acquisition related and other expenses	42	211		41
Acquisiiton related benefit	19
Benefit related to certain litigation		53
Goodwill impairment loss	0	186	[1]	0
Advertising [Abstract]
Advertising expenses	68	55		79
Basis of Financial Statements [Abstract]
Goodwill impairment loss	0	186	[1]	0
Acquisiiton Related Benefit	19
Benefit related to certain litigation		53
Foreign Currency [Abstract]
Net foreign exchange transaction losses included in non-operating income (expense), net	110	157		375
Goodwill, Intangible Assets and Impairment Assessments [Abstract]
Goodwill impairment loss	0	186	[1]	0
Impairment of intangible assets	0	0		0
Non-Operating Income (Expense), net [Abstract]
Interest income	538	349		263
Foreign currency losses, net	(110)	(157)		(375)
Noncontrolling interests in income	(116)	(113)		(98)
Other (loss) income, net	(7)	27		69
Total non-operating income (expense), net	305	106		(141)
Foreign currency remeasurement loss resulting from the devaluation of the Venezuelan currency	7	23		213
Other Receivables [Narrative] [Abstract]
Other receivables included in prepaid expenses and other current assets	816	817
Recent Accounting Pronouncements [Abstract]
Tax benefit from stock plans	141	267		254
Sales of Financing Receivables [Narrative] [Abstract]
Sales of financing receivables	$ 1,800	1,800		$ 2,000
ASU2015-17 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Current deferred tax assets		663
Current deferred tax liabilities		$ 85

[1] 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.