SEGMENT INFORMATION RECONCILIATION (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Aug. 31, 2014		Aug. 31, 2013
Reconciliation of Total Operating Segment Margin to Income Before Provision for Income Taxes [Abstract]
Total margin for operating segments	$ 5,479		$ 5,311
Cloud software-as-a-service and platform-as-a-service revenues	(2)	[1]	(3)	[1]
Software license updates and product support revenues			(1)	[1]
Hardware systems support revenues	(1)	[1]	(5)	[1]
Product development	(1,174)		(1,094)
Marketing and partner program expenses	(119)		(131)
Corporate, general and administrative and information technology expenses	(367)		(345)
Amortization of intangible assets	(547)		(595)
Acquisition related and other	(25)		(10)
Restructuring	(69)		(56)
Stock-based compensation	(212)		(198)
Interest expense	(261)		(217)
Non-operating income, net	16		7
Income before provision for income taxes	2,718		2,663
Reconciliation of Total Operating Segment Revenues to Total Revenues [Line Items]
Cloud software-as-a-service and platform-as-a-service revenues	(2)	[1]	(3)	[1]
Software license updates and product support revenues			(1)	[1]
Hardware systems support revenues	(1)	[1]	(5)	[1]
Total revenues	8,596		8,372
Total for operating segments [Member]
Reconciliation of Total Operating Segment Margin to Income Before Provision for Income Taxes [Abstract]
Total margin for operating segments	5,479	[2]	5,311	[2]
Reconciliation of Total Operating Segment Revenues to Total Revenues [Line Items]
Total revenues	$ 8,599	[3]	$ 8,381	[3]

[1] New software licenses and cloud software subscriptions revenues for management reporting included revenues related to cloud SaaS and PaaS contracts that would have otherwise been recorded by the acquired businesses as independent entities but were not recognized in the accompanying condensed consolidated statements of operations in the amounts of $2 million and $3 million for the three months ended August 31, 2014 and 2013, respectively. Software license updates and product support revenues for management reporting included revenues related to software support contracts that would have otherwise been recorded by the acquired businesses as independent entities but were not recognized in the accompanying condensed consolidated statements of operations in the amount of $1 million for the three months ended August 31, 2013. In addition, we did not recognize hardware systems support revenues related to hardware systems support contracts that would have otherwise been recorded by the acquired businesses as independent entities in the amounts of $1 million and $5 million for the three months ended August 31, 2014 and 2013, respectively. See Note 8 for an explanation of these adjustments.

[2] The margins reported reflect only the direct controllable costs of each line of business and do not include allocations of product development, marketing and partner programs, and corporate, general and administrative and information technology expenses. Additionally, the margins do not reflect amortization of intangible assets, acquisition related and other expenses, restructuring expenses, stock-based compensation, interest expense or certain other income (expense), net.

[3] New software licenses and cloud software subscriptions revenues for management reporting included revenues related to cloud SaaS and PaaS contracts that would have otherwise been recorded by the acquired businesses as independent entities but were not recognized in the accompanying condensed consolidated statements of operations in the amounts of $2 million and $3 million for the three months ended August 31, 2014 and 2013, respectively. Software license updates and product support revenues for management reporting included revenues related to software support contracts that would have otherwise been recorded by the acquired businesses as independent entities but were not recognized in the accompanying condensed consolidated statements of operations in the amount of $1 million for the three months ended August, 31 2013. In addition, we did not recognize hardware systems support revenues related to hardware systems support contracts that would have otherwise been recorded by the acquired businesses as independent entities in the amounts of $1 million and $5 million for the three months ended August 31, 2014 and 2013, respectively. See Note 8 for an explanation of these adjustments and the table below for a reconciliation of our total operating segment revenues to our total revenues. Our new software license and services revenues for management reporting also differ from amounts reported per our consolidated statements of operations for the periods presented due to certain insignificant reclassifications between these lines for management reporting purposes.