Restructuring - Schedule of Total Expected Pre-tax Restructuring Charges (Details) - USD ($) $ in Millions	3 Months Ended		15 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020
Restructuring Cost and Reserve [Line Items]
Restructuring and related costs	$ 23	$ 57	$ 160
Total Expected Charges	190		190
Activision
Restructuring Cost and Reserve [Line Items]
Restructuring and related costs	2	9	21
Total Expected Charges	25		25
Blizzard
Restructuring Cost and Reserve [Line Items]
Restructuring and related costs	21	26	94
Total Expected Charges	105		105
King
Restructuring Cost and Reserve [Line Items]
Restructuring and related costs	(1)	8	19
Total Expected Charges	20		20
Other segments
Restructuring Cost and Reserve [Line Items]
Restructuring and related costs	1	$ 14	26
Total Expected Charges	$ 40		$ 40