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Supplemental Financial Information (Detail) (USD $)
In Millions, unless otherwise specified
Jun. 30, 2014
Dec. 31, 2013
Finished goods $ 33 $ 39
Service parts 17 17
Total inventories 50 56
Deferred revenue, current 442 390
Long-term deferred revenue 26 25
Total deferred revenue $ 468 $ 415