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Restructuring (Details 2) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Restructuring Reserve Disclosures [Abstract]      
Restructuring $ 0 $ 0 $ 25
Activision
     
Restructuring Reserve Disclosures [Abstract]      
Restructuring $ 0 $ 0 $ 25