Business and Business Combination (Details)	Dec. 31, 2012
Description of Business and Basis of Consolidation and Presentation [Line Items]
Percent of Activision Blizzard common stock owned by Vivendi	62.00%
Number of Operating Segments	3

The percentage of the entity's common stock that is owned by a specific company, and which represents a significant ownership percentage.

No definition available.

Name:	atvi_SignificantOwnershipOfEntityStockPercent
Namespace Prefix:	atvi_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant