Description of Business and Basis of Consolidation and Presentation (Details) (Subsequent Events, USD $) In Billions, except Share data in Millions, unless otherwise specified	0 Months Ended
	Oct. 11, 2013
ASAC
Stock Purchase Agreement
Stock Purchased By ASAC, Shares	172
Stock Purchased By ASAC, Value	$ 2.34
Stock Purchased By ASAC, Price Per Share	$ 13.60
Activision Blizzard
Stock Purchase Agreement
Treasury Stock, Shares, Acquired	429
Treasury Stock, Acquired, Value	$ 5.83
Treasury Stock, Price Per Share	$ 13.60