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Goodwill (Tables)
12 Months Ended
Dec. 31, 2011
Goodwill and Intangible Assets Disclosure [Abstract]  
Changes in the carrying amount of goodwill
                                 
    Automotive
Consumer
Computer and
Communication
Infrastructure
(“ACCI”)
    Wireless sector
(“Wireless”)
    Analog, MEMS
and
Microcontrollers
(“AMM”)
    Total  

December 31, 2009

    43       936       92       1,071  

Business Combinations

    —         —         1       1  

Decrease in goodwill due to a release of contingent consideration liability booked initially under FAS141

    —         (6     —         (6

Foreign currency translation

    —         (7     (5     (12

December 31, 2010

    43       923       88       1,054  

Business Combinations

    10       —         —         10  

Foreign currency translation

    —         (2     (3     (5

December 31, 2011

    53       921       85       1,059