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Revenue by Product and Services (Detail) (USD $)
In Millions, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Segment Reporting Information        
Products (software and hardware) $ 306 [1] $ 306 [1] $ 858 [1] $ 935 [1]
Consulting services 200 194 593 552
Maintenance services 160 147 472 438
Total services 360 341 1,065 990
Total revenue $ 666 $ 647 $ 1,923 $ 1,925
[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.