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SEGMENT INFORMATION RECONCILIATION (Details) - USD ($)
$ in Millions
 3 Months Ended
Aug. 31, 2015
Aug. 31, 2014
Reconciliation of Total Operating Segment Margin to Income Before Provision for Income Taxes [Abstract]    
Total margin for operating segments $ 5,164 $ 5,479
Cloud software as a service and platform as a service revenues [1] (1) (2)
Software license updates and product support revenues [1] (1)  
Hardware support revenues [1] (1) (1)
Product development (1,188) (1,174)
Marketing and partner program expenses (109) (119)
Corporate, general and administrative and information technology expenses (394) (367)
Amortization of intangible assets (452) (547)
Acquisition related and other (31) (25)
Restructuring (83) (69)
Stock-based compensation (250) (212)
Interest expense (374) (261)
Non-operating income, net 30 16
Income before provision for income taxes 2,310 2,718
Reconciliation of Total Operating Segment Revenues to Total Revenues [Line Items]    
Cloud software as a service and platform as a service revenues [1] (1) (2)
Software license updates and product support revenues [1] (1)  
Hardware support revenues [1] (1) (1)
Total revenues 8,448 8,596
Total for operating segments [Member]    
Reconciliation of Total Operating Segment Margin to Income Before Provision for Income Taxes [Abstract]    
Total margin for operating segments [2] 5,164 5,479
Reconciliation of Total Operating Segment Revenues to Total Revenues [Line Items]    
Total revenues [3] $ 8,451 $ 8,599
[1] Cloud software as a service and platform as a service revenues, software license updates and product support revenues and hardware support revenues for management reporting included revenues that would have otherwise been recorded by our acquired businesses as independent entities but were not recognized in the accompanying condensed consolidated statements of operations for the periods presented due to business combination accounting requirements. Refer to footnote one to our business and operating segments summary results table above in this Note 11 for additional information.
[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 reported 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] Cloud software and on-premise software 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 $1 million and $2 million for the three months ended August 31, 2015 and 2014, 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, 2015. In addition, we did not recognize hardware support revenues related to hardware support contracts that would have otherwise been recorded by the acquired businesses as independent entities in the amount of $1 million for each of the three months ended August 31, 2015 and 2014, respectively. See Note 7 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.