Intangible Assets, Net - Schedule of Intangible Assets, Net (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Finite-Lived Intangible Assets
Gross carrying amount, definite-lived intangible assets	$ 1,828		$ 1,828
Accumulated amortization, definite-lived intangible assets	(1,763)		(1,730)
Net carrying amount, definite-lived intangible assets	65		98
Indefinite Lived Intangible Assets
Net carrying amount, indefinite-lived intangible assets	433		433
Total intangible assets, net	498		531
Amortization Expense Disclosure
Amortization expense	33	$ 55
Activision trademark
Indefinite Lived Intangible Assets
Net carrying amount, indefinite-lived intangible assets	386		386
Acquired trade names
Indefinite Lived Intangible Assets
Net carrying amount, indefinite-lived intangible assets	47		47
Internally-developed franchises
Finite-Lived Intangible Assets
Gross carrying amount, definite-lived intangible assets	1,154		1,154
Accumulated amortization, definite-lived intangible assets	(1,116)		(1,105)
Net carrying amount, definite-lived intangible assets	$ 38		$ 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
Accumulated amortization, definite-lived intangible assets	(599)		(579)
Net carrying amount, definite-lived intangible assets	$ 2		$ 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
Gross carrying amount, definite-lived intangible assets	$ 54		$ 54
Accumulated amortization, definite-lived intangible assets	(31)		(30)
Net carrying amount, definite-lived intangible assets	$ 23		$ 24
Acquired trade names | Minimum
Finite-Lived Intangible Assets
Estimated useful life	7 years		7 years
Acquired trade names | Maximum
Finite-Lived Intangible Assets
Estimated useful life	10 years		10 years
Other
Finite-Lived Intangible Assets
Gross carrying amount, definite-lived intangible assets	$ 19		$ 19
Accumulated amortization, definite-lived intangible assets	(17)		(16)
Net carrying amount, definite-lived intangible assets	$ 2		$ 3
Other | Minimum
Finite-Lived Intangible Assets
Estimated useful life	1 year		1 year
Other | Maximum
Finite-Lived Intangible Assets
Estimated useful life	15 years		15 years