ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	May 31, 2017	May 31, 2016	May 31, 2015	Jun. 01, 2016
Basis of Financial Statements [Abstract]
Acquisition related benefit		$ 19
Benefit related to certain litigation			$ 53
Goodwill impairment loss	$ 0	0	186
Increase in net cash provided by operating activities	14,126	13,685	14,580
Increase to deferred tax assets	6,197	4,936
Reduction to retained earnings	(27,598)	(23,888)
Sales of financing receivables	$ 1,600	1,800	1,800
Concentrations of Risk [Abstract]
Customer Concentrations	No single customer accounted for 10% or more of our total revenues in fiscal 2017, 2016 or 2015.
Supplier Concentrations	We outsource the design, manufacturing, assembly and delivery of certain of our hardware products to a variety of companies, many of which are located outside the United States. Further, we have simplified our supply chain processes by reducing the number of third-party manufacturing partners and the number of locations where these third-party manufacturers build our hardware products. Any inability of these third-party manufacturing partners to deliver the contracted services for our hardware products could adversely impact future operating results of our hardware business.
Credit Risk Concentrations	Financial instruments that are potentially subject to concentrations of credit risk consist primarily of cash and cash equivalents, marketable securities, derivatives and trade receivables. Our cash and cash equivalents are generally held with large, diverse financial institutions worldwide to reduce the amount of exposure to any single financial institution. Investment policies have been implemented that limit purchases of marketable debt securities to investment-grade securities. Our derivative contracts are transacted with various financial institutions with high credit standings and any exposure to counterparty credit-related losses in these contracts is largely mitigated with collateral security agreements that provide for collateral to be received or posted when the net fair value of these contracts fluctuates from contractually established thresholds. We generally do not require collateral to secure accounts receivable. The risk with respect to trade receivables is mitigated by credit evaluations we perform on our customers, the short duration of our payment terms for the significant majority of our customer contracts and by the diversification of our customer base.
Other Receivables [Narrative] [Abstract]
Other receivables included in prepaid expenses and other current assets	$ 794	816
Property, Plant and Equipment [Abstract]
Impairment of Property, Plant and Equipment	We did not recognize any significant property impairment charges in fiscal 2017, 2016 or 2015.
Goodwill, Intangible Assets and Impairment Assessments [Abstract]
Goodwill impairment loss	$ 0	0	186
Impairment of intangible assets	We did not recognize any intangible asset impairment charges in fiscal 2017, 2016 or 2015.
Foreign Currency [Abstract]
Net foreign exchange transaction losses included in non-operating income, net	$ 152	110	157
Advertising [Abstract]
Advertising expenses	$ 95	68	55
Research and Development and Software Development Costs [Abstract]
Research Development And Computer Software Activity Description	Software development costs required to be capitalized under ASC 985-20, Costs of Software to be Sold, Leased or Marketed, and under ASC 350-40, Internal-Use Software, were not material to our consolidated financial statements in fiscal 2017, 2016 and 2015.
Acquisition Related and Other Expenses [Abstract]
Acquisition related benefit		19
Benefit related to certain litigation			53
Goodwill impairment loss	$ 0	0	186
Minimum [Member]
Property, Plant and Equipment [Abstract]
Property, plant and equipment, estimated useful lives	1 year
Goodwill, Intangible Assets and Impairment Assessments [Abstract]
Finite lived intangible assets, useful life	1 year
Maximum [Member]
Property, Plant and Equipment [Abstract]
Property, plant and equipment, estimated useful lives	40 years
Goodwill, Intangible Assets and Impairment Assessments [Abstract]
Finite lived intangible assets, useful life	10 years
ASU 2016-09 [Member]
Basis of Financial Statements [Abstract]
Increase in net cash provided by operating activities		$ 124	$ 244
Increase to additional paid in capital				$ 9
Increase to deferred tax assets				3
Reduction to retained earnings				$ 6