Restructuring - Schedule of Accrued Restructuring Included in Accrued Expenses and Other Liabilities and Charges by Reportable Segment (Details) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Restructuring Reserve [Roll Forward]
Balance at December 31, 2018	$ 0
Costs charged to expense	57,000,000	$ 0
Cash payments	(12,000,000)
Non-cash charge adjustment	(11,000,000)
Balance at March 31, 2019	34,000,000
Restructuring and related costs	57,000,000	$ 0
Activision
Restructuring Reserve [Roll Forward]
Costs charged to expense	9,000,000
Restructuring and related costs	9,000,000
Blizzard
Restructuring Reserve [Roll Forward]
Costs charged to expense	26,000,000
Restructuring and related costs	26,000,000
King
Restructuring Reserve [Roll Forward]
Costs charged to expense	8,000,000
Restructuring and related costs	8,000,000
Other segments
Restructuring Reserve [Roll Forward]
Costs charged to expense	14,000,000
Restructuring and related costs	14,000,000
Severance & employee related costs
Restructuring Reserve [Roll Forward]
Balance at December 31, 2018	0
Costs charged to expense	43,000,000
Cash payments	(11,000,000)
Non-cash charge adjustment	0
Balance at March 31, 2019	32,000,000
Restructuring and related costs	43,000,000
Other costs
Restructuring Reserve [Roll Forward]
Balance at December 31, 2018	0
Costs charged to expense	14,000,000
Cash payments	(1,000,000)
Non-cash charge adjustment	(11,000,000)
Balance at March 31, 2019	2,000,000
Restructuring and related costs	$ 14,000,000