Intangible Assets, Net (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Acquired Finite-Lived Intangible Assets [Line Items]
Gross carrying amount, definite-lived intangible assets	$ 1,828	$ 1,828
Accumulated amortization, definite-lived intangible assets	(1,810)	(1,730)
Net carrying amount, definite-lived intangible assets	18	98
Acquired Indefinite-lived Intangible Assets [Line Items]
Indefinite-lived Intangible Assets (Excluding Goodwill)	433	433
Total intangible assets, net	451	531
Amortization expense disclosure
Amortization expense	80	204	$ 371
Activision trademark
Acquired Indefinite-lived Intangible Assets [Line Items]
Indefinite-lived Intangible Assets (Excluding Goodwill)	386	386
Acquired trade names
Acquired Indefinite-lived Intangible Assets [Line Items]
Indefinite-lived Intangible Assets (Excluding Goodwill)	47	47
Internally-developed franchises
Acquired Finite-Lived Intangible Assets [Line Items]
Gross carrying amount, definite-lived intangible assets	1,154	1,154
Accumulated amortization, definite-lived intangible assets	(1,151)	(1,105)
Net carrying amount, definite-lived intangible assets	$ 3	$ 49
Internally-developed franchises | Minimum
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated useful life	3 years	3 years
Internally-developed franchises | Maximum
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated useful life	11 years	11 years
Developed software
Acquired Finite-Lived Intangible Assets [Line Items]
Gross carrying amount, definite-lived intangible assets	$ 601	$ 601
Accumulated amortization, definite-lived intangible assets	(601)	(579)
Net carrying amount, definite-lived intangible assets	$ 0	$ 22
Developed software | Minimum
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated useful life	2 years	2 years
Developed software | Maximum
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated useful life	5 years	5 years
Acquired trade names
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated useful life	7 years
Gross carrying amount, definite-lived intangible assets	$ 54	$ 54
Accumulated amortization, definite-lived intangible assets	(40)	(30)
Net carrying amount, definite-lived intangible assets	14	$ 24
Acquired trade names | Minimum
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated useful life		7 years
Acquired trade names | Maximum
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated useful life		10 years
Other
Acquired Finite-Lived Intangible Assets [Line Items]
Gross carrying amount, definite-lived intangible assets	19	$ 19
Accumulated amortization, definite-lived intangible assets	(18)	(16)
Net carrying amount, definite-lived intangible assets	$ 1	$ 3
Other | Minimum
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated useful life	1 year	1 year
Other | Maximum
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated useful life	10 years	15 years