Cover Page - shares	3 Months Ended
	Mar. 31, 2021	Apr. 27, 2021
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2021
Document Transition Report	false
Entity File Number	1-15839
Entity Registrant Name	ACTIVISION BLIZZARD, INC.
Entity Central Index Key	0000718877
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q1
Amendment Flag	false
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	95-4803544
Entity Address, City or Town	N/A
Entity Address, Address Line One	N/A
Entity Address, Postal Zip Code	N/A
City Area Code	310
Local Phone Number	255-2000
Title of 12(b) Security	Common Stock, par value $0.000001 per share
Trading Symbol	ATVI
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		777,016,759