ACQUISITIONS (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended			12 Months Ended
	Jun. 30, 2016	Sep. 30, 2014	Feb. 28, 2014	May 31, 2016	May 31, 2015	May 31, 2014	Sep. 08, 2014	Jul. 03, 2014	Feb. 06, 2014
Acquisition [Line Items]
Fair value of restricted stock-based awards and stock options assumed				$ 1	$ 12	$ 148
Goodwill				34,590	34,087	29,652
Acquisitions Proforma [Abstract]
Total revenues				37,084	38,771
Net income				$ 8,869	$ 9,844
Basic earnings per share (in dollars per share)				$ 2.10	$ 2.24
Diluted earnings per share (in dollars per share)				$ 2.06	$ 2.19
Fiscal 2017 Acquisition [Member]
Acquisition [Line Items]
Total purchase price	$ 1,300
Fiscal 2016 Acquisitions [Member]
Acquisition [Line Items]
Materiality of acquisitions individually or in the aggregate				These acquisitions were not significant individually or in the aggregate.
MICROS Systems, Inc. [Member]
Acquisition [Line Items]
Merger agreement date				Jun. 22, 2014
Total purchase price		$ 5,247
Cash and cash equivalents							$ 683
Trade receivables, net							181
Inventories							28
Goodwill							3,242
Intangible assets							2,030
Other assets							155
Accounts payable and other liabilities							(359)
Deferred tax liabilities, net							(536)
Deferred revenues							$ (177)
Business acquisition per share price							$ 68.00	$ 68.00
Business combination reason				We acquired MICROS to, among other things, expand our cloud and on-premise software, hardware and related services offerings for hotels, food and beverage industries, facilities, and retailers.
Other Fiscal 2015 Acquisitions [Member]
Acquisition [Line Items]
Total purchase price					$ 1,700
Cash portion of purchase price					1,700
Fair value of restricted stock-based awards and stock options assumed					7
Goodwill					1,400
Intangible assets					388
Net tangible liabilities assumed					$ 6
Responsys, Inc. [Member]
Acquisition [Line Items]
Acquisition completion date				Feb. 06, 2014
Total purchase price			$ 1,600
Cash portion of purchase price			1,400
Fair value of restricted stock-based awards and stock options assumed			$ 147
Goodwill									$ 1,000
Intangible assets									580
Net tangible liabilities assumed									32
In-process research and development recorded									$ 14
Other Fiscal 2014 Acquisitions [Member]
Acquisition [Line Items]
Total purchase price						2,300
Goodwill						1,300
Intangible assets						1,100
Net tangible liabilities assumed						230
In-process research and development recorded						$ 99