Intangible Assets, Net - Schedule of Intangible Assets, Net (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Finite-Lived Intangible Assets
Gross carrying amount, definite-lived intangible assets	$ 1,828		$ 1,828		$ 2,445
Accumulated amortization, definite-lived intangible assets	(1,678)		(1,678)		(2,143)
Net carrying amount, definite-lived intangible assets	150		150		302
Indefinite Lived Intangible Assets
Net carrying amount, indefinite-lived intangible assets	433		433		433
Total intangible assets, net	583		583		735
Amortization Expense Disclosure
Amortization expense	50	$ 84	152	$ 280
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	(1,086)		(1,086)		(1,032)
Net carrying amount, definite-lived intangible assets	68		$ 68		$ 122
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	(548)		(548)		(456)
Net carrying amount, definite-lived intangible assets	53		$ 53		$ 145
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
Customer base
Finite-Lived Intangible Assets
Estimated useful life					2 years
Gross carrying amount, definite-lived intangible assets					$ 617
Accumulated amortization, definite-lived intangible assets					(617)
Net carrying amount, definite-lived intangible assets					0
Acquired trade names
Finite-Lived Intangible Assets
Gross carrying amount, definite-lived intangible assets	54		$ 54		54
Accumulated amortization, definite-lived intangible assets	(28)		(28)		(23)
Net carrying amount, definite-lived intangible assets	26		$ 26		$ 31
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		$ 19
Accumulated amortization, definite-lived intangible assets	(16)		(16)		(15)
Net carrying amount, definite-lived intangible assets	$ 3		$ 3		$ 4
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