Restructuring - Schedule of Total Expected Pre-tax Restructuring Charges (Details) $ in Millions	Mar. 31, 2019 USD ($)
Restructuring Cost and Reserve [Line Items]
Total expected pre-tax restructuring charges	$ 150
Activision
Restructuring Cost and Reserve [Line Items]
Total expected pre-tax restructuring charges	17
Blizzard
Restructuring Cost and Reserve [Line Items]
Total expected pre-tax restructuring charges	60
King
Restructuring Cost and Reserve [Line Items]
Total expected pre-tax restructuring charges	34
Other segments
Restructuring Cost and Reserve [Line Items]
Total expected pre-tax restructuring charges	$ 39