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Investments in Equity-Accounted Investees - Company's Share in Income (Loss) (Detail) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Schedule Of Results Related To Equity Accounted Investees [Line Items]      
Company's share in income (loss) $ 7 $ (77) $ (86)
Trident Microsystems, Inc., [Member]
     
Schedule Of Results Related To Equity Accounted Investees [Line Items]      
Company's share in income (loss)    (82) (94)
ASMC [Member]
     
Schedule Of Results Related To Equity Accounted Investees [Line Items]      
Company's share in income (loss) 3 3 4
ASEN [Member]
     
Schedule Of Results Related To Equity Accounted Investees [Line Items]      
Company's share in income (loss) 4 2 4
Others [Member]
     
Schedule Of Results Related To Equity Accounted Investees [Line Items]      
Company's share in income (loss)