v2.4.0.6
Supplemental Financial Information - Inventories, Net (Detail) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Inventory [Line Items]      
Raw materials $ 70 $ 69  
Work in process 515 415  
Finished goods 130 134  
Inventory net $ 715 $ 618 $ 513