Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2017	Feb. 20, 2018	Jun. 30, 2017
Document and Entity Information
Entity Registrant Name	Activision Blizzard, Inc.
Entity Central Index Key	0000718877
Document Period End Date	Dec. 31, 2017
Document Type	10-K
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Public Float			$ 42,587,342,045
Entity Common Stock, Shares Outstanding		758,631,663
Document Fiscal Year Focus	2017
Document Fiscal Period Focus	FY