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Revenue by Product and Services (Detail) (USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Segment Reporting Information        
Products (software and hardware) $ 303 [1] $ 321 [1] $ 552 [1] $ 629 [1]
Consulting services 207 193 393 358
Maintenance services 160 151 312 291
Total services 367 344 705 649
Total revenue $ 670 $ 665 $ 1,257 $ 1,278
[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.