Description of business and basis of consolidation and presentation (Details 2) (USD $) Share data in Millions, except Per Share data, unless otherwise specified	0 Months Ended
	May 28, 2014	Oct. 11, 2013	Jun. 30, 2014
Stock Purchase Agreement [Line Items]
Treasury Stock, Acquired, Shares		429
Treasury Stock, Acquired, Value		$ 5,830,000,000
Common Stock Outstanding			717
Activision Blizzard
Stock Purchase Agreement [Line Items]
Treasury Stock, Acquired, Shares		429
Treasury Stock, Acquired, Value		5,830,000,000
Treasury Stock, Price Per Share		$ 13.60
Other stockholders
Stock Purchase Agreement [Line Items]
Percent of Activision Blizzard common stock owned by a specific shareholder			70.00%
Vivendi
Stock Purchase Agreement [Line Items]
Percent of Activision Blizzard common stock owned by a specific shareholder			6.00%
Stock Sold by Vivendi, Shares	41
Stock Sold by Vivendi, Percent of Holdings	50.00%
Stock Sold By Vivendi, Value of Proceeds	850,000,000
Shares of Activision Blizzard common stock owned by a specific shareholder			41
Number of months after the Purchase Transaction before Vivendi can sell remaining stock		15 months
ASAC
Stock Purchase Agreement [Line Items]
Stock Purchased By ASAC, Shares		172
Stock Purchased By ASAC, Value		$ 2,340,000,000
Stock Purchased By ASAC, Price Per Share		$ 13.60
Percent of Activision Blizzard common stock owned by a specific shareholder			24.00%