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Revenue by Product and Services (Detail) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Segment Reporting Information    
Products (software and hardware) $ 249 [1] $ 308 [1]
Consulting services 186 165
Maintenance services 152 140
Total services 338 305
Total revenue $ 587 $ 613
[1] Our data warehousing software and hardware products are often sold and delivered together in the form of a "node" of capacity as an integrated technology solution. Accordingly, it is impracticable to provide the breakdown of revenue from various types of software and hardware products.