Intangible Assets, Net - Schedule of Intangible Assets, Net (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Finite-Lived Intangible Assets
Gross carrying amount, definite-lived intangible assets	$ 1,828		$ 1,828		$ 1,828
Accumulated amortization, definite-lived intangible assets	(1,792)		(1,792)		(1,730)
Net carrying amount, definite-lived intangible assets	36		36		98
Indefinite Lived Intangible Assets
Net carrying amount, indefinite-lived intangible assets	433		433		433
Total intangible assets, net	469		469		531
Amortization Expense Disclosure
Amortization expense	16	$ 50	62	$ 152
Activision trademark
Indefinite Lived Intangible Assets
Net carrying amount, indefinite-lived intangible assets	386		386		386
Acquired trade names
Indefinite Lived Intangible Assets
Net carrying amount, indefinite-lived intangible assets	47		47		47
Internally-developed franchises
Finite-Lived Intangible Assets
Gross carrying amount, definite-lived intangible assets	1,154		1,154		1,154
Accumulated amortization, definite-lived intangible assets	(1,139)		(1,139)		(1,105)
Net carrying amount, definite-lived intangible assets	15		$ 15		$ 49
Internally-developed franchises | Minimum
Finite-Lived Intangible Assets
Estimated useful life			3 years		3 years
Internally-developed franchises | Maximum
Finite-Lived Intangible Assets
Estimated useful life			11 years		11 years
Developed software
Finite-Lived Intangible Assets
Gross carrying amount, definite-lived intangible assets	601		$ 601		$ 601
Accumulated amortization, definite-lived intangible assets	(600)		(600)		(579)
Net carrying amount, definite-lived intangible assets	1		$ 1		$ 22
Developed software | Minimum
Finite-Lived Intangible Assets
Estimated useful life			2 years		2 years
Developed software | Maximum
Finite-Lived Intangible Assets
Estimated useful life			5 years		5 years
Acquired trade names
Finite-Lived Intangible Assets
Estimated useful life			7 years
Gross carrying amount, definite-lived intangible assets	54		$ 54		$ 54
Accumulated amortization, definite-lived intangible assets	(36)		(36)		(30)
Net carrying amount, definite-lived intangible assets	18		18		$ 24
Acquired trade names | Minimum
Finite-Lived Intangible Assets
Estimated useful life					7 years
Acquired trade names | Maximum
Finite-Lived Intangible Assets
Estimated useful life					10 years
Other
Finite-Lived Intangible Assets
Gross carrying amount, definite-lived intangible assets	19		19		$ 19
Accumulated amortization, definite-lived intangible assets	(17)		(17)		(16)
Net carrying amount, definite-lived intangible assets	$ 2		$ 2		$ 3
Other | Minimum
Finite-Lived Intangible Assets
Estimated useful life			1 year		1 year
Other | Maximum
Finite-Lived Intangible Assets
Estimated useful life			10 years		15 years