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Goodwill (Details) (USD $)
In Millions, unless otherwise specified
 12 Months Ended 12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2011
Automotive Consumer Computer and Communication Infrastructure [Member]
Dec. 31, 2009
Automotive Consumer Computer and Communication Infrastructure [Member]
Dec. 31, 2011
Wireless Sector [Member]
Dec. 31, 2010
Wireless Sector [Member]
Dec. 31, 2011
Analog, MEMS and Microcontrollers Rollers [Member]
Dec. 31, 2010
Analog, MEMS and Microcontrollers Rollers [Member]
Changes in the carrying amount of goodwill                
Goodwill, Beginning Balance $ 1,054 $ 1,071 $ 43 $ 43 $ 923 $ 936 $ 88 $ 92
Business Combinations 10 1 10         1
Decrease in goodwill due to a release of contingent consideration liability booked initially under FAS141   (6)       (6)    
Foreign currency translation (5) (12)     (2) (7) (3) (5)
Goodwill, Ending Balance $ 1,059 $ 1,054 $ 53 $ 43 $ 921 $ 923 $ 85 $ 88