Intangible Assets, Net - Schedule of Intangible Assets, Net (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Finite-Lived Intangible Assets
Gross carrying amount, definite-lived intangible assets	$ 1,828		$ 2,445
Accumulated amortization, definite-lived intangible assets	(1,581)		(2,143)
Net carrying amount, definite-lived intangible assets	247		302
Indefinite Lived Intangible Assets
Net carrying amount, indefinite-lived intangible assets	433		433
Total intangible assets, net	680		735
Amortization Expense Disclosure
Amortization expense	55	$ 119
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	(1,052)		(1,032)
Net carrying amount, definite-lived intangible assets	$ 102		$ 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
Accumulated amortization, definite-lived intangible assets	(490)		(456)
Net carrying amount, definite-lived intangible assets	$ 111		$ 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
Accumulated amortization, definite-lived intangible assets	(24)		(23)
Net carrying amount, definite-lived intangible assets	$ 30		$ 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
Accumulated amortization, definite-lived intangible assets	(15)		(15)
Net carrying amount, definite-lived intangible assets	$ 4		$ 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