Restructuring - Schedule of Total Expected Pre-tax Restructuring Charges (Details) $ in Millions	Jun. 30, 2021 USD ($)
Restructuring Cost and Reserve [Line Items]
Total Charges Incurred Through June 30, 2021	$ 268
Total Charges Expected as of June 30, 2021	300
Activision
Restructuring Cost and Reserve [Line Items]
Total Charges Incurred Through June 30, 2021	33
Total Charges Expected as of June 30, 2021	36
Blizzard
Restructuring Cost and Reserve [Line Items]
Total Charges Incurred Through June 30, 2021	182
Total Charges Expected as of June 30, 2021	205
King
Restructuring Cost and Reserve [Line Items]
Total Charges Incurred Through June 30, 2021	20
Total Charges Expected as of June 30, 2021	20
Other segments
Restructuring Cost and Reserve [Line Items]
Total Charges Incurred Through June 30, 2021	33
Total Charges Expected as of June 30, 2021	$ 39