ACQUISITIONS (Details) (USD $)
In Millions, except Per Share data, unless otherwise specified
 3 Months Ended 6 Months Ended 12 Months Ended 12 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended
Nov. 30, 2012
Nov. 30, 2011
Nov. 30, 2012
Nov. 30, 2011
Nov. 30, 2012
Fiscal 2013 Acquisitions [Member]
May 31, 2012
Taleo Corporation [Member]
Apr. 05, 2012
Taleo Corporation [Member]
May 31, 2012
RightNow Technologies, Inc. [Member]
Jan. 25, 2012
RightNow Technologies, Inc. [Member]
Nov. 30, 2012
Pillar Data Systems, Inc. [Member]
Nov. 30, 2012
Pillar Data Systems, Inc. [Member]
May 31, 2012
Pillar Data Systems, Inc. [Member]
Jul. 18, 2011
Pillar Data Systems, Inc. [Member]
May 31, 2012
Other Fiscal 2012 Acquisitions [Member]
Acquisitions [Line Items]                            
Materiality of acquisitions individually or in the aggregate         These acquisitions were not significant individually or in the aggregate.                  
Acquisition completion date           Apr. 05, 2012   Jan. 25, 2012       Jul. 18, 2011    
Merger agreement date                       Jun. 29, 2011    
Total purchase price             $ 2,000   $ 1,500         $ 1,600
Purchase price payable consisting of estimated fair value of the liability for contingent consideration                         346  
Cash portion of purchase price             2,000   1,500         1,600
Fair value of stock options and restricted stock-based awards assumed             10   14         5
Identifiable intangible assets recorded             1,100   697       142 540
Net tangible assets (liabilities) assumed             (267)   (247)       (16) 18
Residual goodwill             1,200   1,100       220 1,100
Estimated fair value of the Earn-Out Liability                   258 258      
Amount of Earn-Out that an affiliate of Mr. Ellison has the first preference right to receive                         565  
Percentage right that an affiliate of Mr. Ellison has over any amount of the Earn-Out that exceeds $565 million                         55.00%  
Net benefit to acquisition related and other expenses 145   129             145 129      
Acquisitions Pro Forma [Abstract]                            
Total revenues 9,095 8,987 17,282 17,555                    
Net income $ 2,580 $ 2,116 $ 4,602 $ 3,858                    
Basic earnings per share (in dollars per share) $ 0.54 $ 0.42 $ 0.95 $ 0.76                    
Diluted earnings per share (in dollars per share) $ 0.53 $ 0.41 $ 0.94 $ 0.75