ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		12 Months Ended
	Aug. 31, 2012	Nov. 30, 2010	May 31, 2013	May 31, 2012	May 31, 2011
Acquisition Related and Other Expenses [Abstract]
Transitional and other employee related costs			$ 27	$ 25	$ 129
Stock-based compensation			33	33	10
Professional fees and other, net			(276)	13	66
Business combination adjustments, net			(388)	(15)	3
Total acquisition related and other expenses			(604)	56	208
Change in fair value of contingent consideration payable			387
Benefit related to certain litigation	306		306
Advertising [Abstract]
Advertising expenses			85	79	88
Basis of Financial Statements Abstract
Recovery of legal costs		120			120
Change in fair value of contingent consideration payable			387
Benefit related to certain litigation	306		306
Foreign Currency [Abstract]
Net foreign exchange transaction (losses) gains included in non-operating income, net			(162)	(105)	11
New Software Licenses and Cloud Software Subscriptions Revenues [Abstract]
New software licenses			9,411	9,451	8,980
Cloud software subscriptions			910	455	255
Total new software licenses and cloud software subscriptions revenues			10,321	9,906	9,235
Non-Operating Income, net [Abstract]
Interest income			237	231	163
Foreign currency (losses) gains, net			(162)	(105)	11
Noncontrolling interests in income			(112)	(119)	(97)
Other income, net			48	15	109
Total non-operating income, net			11	22	186
Foreign currency remeasurement loss resulting from the recent devaluation of the Venezuelan currency			64
Other Receivables [Narrative] [Abstract]
Other receivables included in prepaid expenses and other current assets			826	812
Sales of Financing Receivables [Narrative] [Abstract]
Sales of financing receivables			$ 2,200	$ 1,600	$ 1,500