Operating Segments and Geographic Regions (Details) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2019 USD ($)	Sep. 30, 2019 USD ($)	Jun. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Sep. 30, 2018 USD ($)	Jun. 30, 2018 USD ($)	Mar. 31, 2018 USD ($)	Dec. 31, 2019 USD ($) segment	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Segment Reporting [Abstract]
Number of reportable segments | segment									3
Segment Reporting Information [Line Items]
Segment net revenues									$ 6,388	$ 7,262
Operating income	$ 454	$ 247	$ 336	$ 570	$ 694	$ 265	$ 434	$ 595	1,607	1,988	$ 1,309
Net effect from recognition (deferral) of deferred net revenues (2)									(101)	(238)
Net revenues	1,986	$ 1,282	$ 1,396	$ 1,825	2,381	$ 1,512	$ 1,641	$ 1,965	6,489	7,500	7,017
Share-based compensation expense									(166)	(209)	(178)
Amortization of intangible assets									(204)	(371)	(759)
Restructuring costs									(132)	(10)	(15)
Interest and other expense (income), net (Note 18)									(26)	71	146
Loss on extinguishment of debt									0	40	12
Income before income tax expense									1,633	1,877	1,151
Long-lived assets	485				282				485	282	294
Digital online channels
Segment Reporting Information [Line Items]
Segment net revenues									4,928	5,718
Net effect from recognition (deferral) of deferred net revenues (2)									(4)	(68)
Net revenues									4,932	5,786	5,479
Retail channels
Segment Reporting Information [Line Items]
Segment net revenues									814	916
Net effect from recognition (deferral) of deferred net revenues (2)									(95)	(191)
Net revenues									909	1,107	1,033
Other
Segment Reporting Information [Line Items]
Segment net revenues									646	628
Net effect from recognition (deferral) of deferred net revenues (2)									(2)	21
Net revenues									648	607	505
Console
Segment Reporting Information [Line Items]
Segment net revenues									1,866	2,273
Net effect from recognition (deferral) of deferred net revenues (2)									(54)	(265)
Net revenues									1,920	2,538	2,389
PC
Segment Reporting Information [Line Items]
Segment net revenues									1,665	2,189
Net effect from recognition (deferral) of deferred net revenues (2)									(53)	9
Net revenues									1,718	2,180	2,042
Mobile and ancillary
Segment Reporting Information [Line Items]
Segment net revenues									2,211	2,172
Net effect from recognition (deferral) of deferred net revenues (2)									8	(3)
Net revenues									2,203	2,175	2,081
Other
Segment Reporting Information [Line Items]
Segment net revenues									646	628
Net effect from recognition (deferral) of deferred net revenues (2)									(2)	21
Net revenues									648	607	505
Americas
Segment Reporting Information [Line Items]
Segment net revenues									3,297	3,729
Net effect from recognition (deferral) of deferred net revenues (2)									(44)	(151)
Net revenues									3,341	3,880	3,607
Long-lived assets	322				203				322	203	197
EMEA
Segment Reporting Information [Line Items]
Segment net revenues									2,192	2,527
Net effect from recognition (deferral) of deferred net revenues (2)									(47)	(91)
Net revenues									2,239	2,618	2,464
Long-lived assets	142				62				142	62	75
Asia Pacific
Segment Reporting Information [Line Items]
Segment net revenues									899	1,006
Net effect from recognition (deferral) of deferred net revenues (2)									(10)	4
Net revenues									909	1,002	946
Long-lived assets	$ 21				$ 17				$ 21	$ 17	$ 22
Geographic Concentration Risk | Revenues | US
Segment Reporting Information [Line Items]
Percentage of concentration risk									46.00%	46.00%	45.00%
Geographic Concentration Risk | Revenues | UK
Segment Reporting Information [Line Items]
Percentage of concentration risk									12.00%	12.00%	12.00%
Activision
Segment Reporting Information [Line Items]
Restructuring costs									$ (19)
Blizzard
Segment Reporting Information [Line Items]
Restructuring costs									(68)
King
Segment Reporting Information [Line Items]
Restructuring costs									(20)
Other segments
Segment Reporting Information [Line Items]
Restructuring costs									(25)
Reportable segments
Segment Reporting Information [Line Items]
Segment net revenues									5,969	$ 6,835	$ 6,765
Operating income									2,054	2,446	2,417
Reportable segments | Net revenues from external customers
Segment Reporting Information [Line Items]
Segment net revenues									5,926	6,782	6,746
Reportable segments | Intersegment net revenues
Segment Reporting Information [Line Items]
Segment net revenues									43	53	19
Reportable segments | Activision
Segment Reporting Information [Line Items]
Segment net revenues									2,219	2,458	2,628
Operating income									850	1,011	1,005
Net effect from recognition (deferral) of deferred net revenues (2)									32	(280)
Net revenues									2,187	2,738
Reportable segments | Activision | Net revenues from external customers
Segment Reporting Information [Line Items]
Segment net revenues									2,219	2,458	2,628
Reportable segments | Activision | Intersegment net revenues
Segment Reporting Information [Line Items]
Segment net revenues									0	0	0
Reportable segments | Activision | Digital online channels
Segment Reporting Information [Line Items]
Segment net revenues									1,488	1,644
Net effect from recognition (deferral) of deferred net revenues (2)									122	(96)
Net revenues									1,366	1,740
Reportable segments | Activision | Retail channels
Segment Reporting Information [Line Items]
Segment net revenues									728	814
Net effect from recognition (deferral) of deferred net revenues (2)									(90)	(184)
Net revenues									818	998
Reportable segments | Activision | Other
Segment Reporting Information [Line Items]
Segment net revenues									3	0
Net effect from recognition (deferral) of deferred net revenues (2)									0	0
Net revenues									3	0
Reportable segments | Activision | Console
Segment Reporting Information [Line Items]
Segment net revenues									1,747	2,094
Net effect from recognition (deferral) of deferred net revenues (2)									(36)	(257)
Net revenues									1,783	2,351
Reportable segments | Activision | PC
Segment Reporting Information [Line Items]
Segment net revenues									355	345
Net effect from recognition (deferral) of deferred net revenues (2)									57	(23)
Net revenues									298	368
Reportable segments | Activision | Mobile and ancillary
Segment Reporting Information [Line Items]
Segment net revenues									114	19
Net effect from recognition (deferral) of deferred net revenues (2)									11	0
Net revenues									103	19
Reportable segments | Activision | Other
Segment Reporting Information [Line Items]
Segment net revenues									3	0
Net effect from recognition (deferral) of deferred net revenues (2)									0	0
Net revenues									3	0
Reportable segments | Activision | Americas
Segment Reporting Information [Line Items]
Segment net revenues									1,302	1,459
Net effect from recognition (deferral) of deferred net revenues (2)									16	(163)
Net revenues									1,286	1,622
Reportable segments | Activision | EMEA
Segment Reporting Information [Line Items]
Segment net revenues									703	770
Net effect from recognition (deferral) of deferred net revenues (2)									12	(127)
Net revenues									691	897
Reportable segments | Activision | Asia Pacific
Segment Reporting Information [Line Items]
Segment net revenues									214	229
Net effect from recognition (deferral) of deferred net revenues (2)									4	10
Net revenues									210	219
Reportable segments | Blizzard
Segment Reporting Information [Line Items]
Segment net revenues									1,719	2,291	2,139
Operating income									464	685	712
Net effect from recognition (deferral) of deferred net revenues (2)									(133)	25
Net revenues									1,852	2,266
Reportable segments | Blizzard | Net revenues from external customers
Segment Reporting Information [Line Items]
Segment net revenues									1,676	2,238	2,120
Reportable segments | Blizzard | Intersegment net revenues
Segment Reporting Information [Line Items]
Segment net revenues									43	53	19
Reportable segments | Blizzard | Digital online channels
Segment Reporting Information [Line Items]
Segment net revenues									1,452	2,041
Net effect from recognition (deferral) of deferred net revenues (2)									(128)	32
Net revenues									1,580	2,009
Reportable segments | Blizzard | Retail channels
Segment Reporting Information [Line Items]
Segment net revenues									86	102
Net effect from recognition (deferral) of deferred net revenues (2)									(5)	(7)
Net revenues									91	109
Reportable segments | Blizzard | Other
Segment Reporting Information [Line Items]
Segment net revenues									181	148
Net effect from recognition (deferral) of deferred net revenues (2)									0	0
Net revenues									181	148
Reportable segments | Blizzard | Console
Segment Reporting Information [Line Items]
Segment net revenues									119	179
Net effect from recognition (deferral) of deferred net revenues (2)									(18)	(8)
Net revenues									137	187
Reportable segments | Blizzard | PC
Segment Reporting Information [Line Items]
Segment net revenues									1,236	1,744
Net effect from recognition (deferral) of deferred net revenues (2)									(110)	33
Net revenues									1,346	1,711
Reportable segments | Blizzard | Mobile and ancillary
Segment Reporting Information [Line Items]
Segment net revenues									183	220
Net effect from recognition (deferral) of deferred net revenues (2)									(5)	0
Net revenues									188	220
Reportable segments | Blizzard | Other
Segment Reporting Information [Line Items]
Segment net revenues									181	148
Net effect from recognition (deferral) of deferred net revenues (2)									0	0
Net revenues									181	148
Reportable segments | Blizzard | Americas
Segment Reporting Information [Line Items]
Segment net revenues									760	1,019
Net effect from recognition (deferral) of deferred net revenues (2)									(62)	15
Net revenues									822	1,004
Reportable segments | Blizzard | EMEA
Segment Reporting Information [Line Items]
Segment net revenues									486	708
Net effect from recognition (deferral) of deferred net revenues (2)									(57)	16
Net revenues									543	692
Reportable segments | Blizzard | Asia Pacific
Segment Reporting Information [Line Items]
Segment net revenues									473	564
Net effect from recognition (deferral) of deferred net revenues (2)									(14)	(6)
Net revenues									487	570
Reportable segments | King
Segment Reporting Information [Line Items]
Segment net revenues									2,031	2,086	1,998
Operating income									740	750	700
Net effect from recognition (deferral) of deferred net revenues (2)									2	(4)
Net revenues									2,029	2,090
Reportable segments | King | Net revenues from external customers
Segment Reporting Information [Line Items]
Segment net revenues									2,031	2,086	1,998
Reportable segments | King | Intersegment net revenues
Segment Reporting Information [Line Items]
Segment net revenues									0	0	0
Reportable segments | King | Digital online channels
Segment Reporting Information [Line Items]
Segment net revenues									2,031	2,086
Net effect from recognition (deferral) of deferred net revenues (2)									2	(4)
Net revenues									2,029	2,090
Reportable segments | King | Retail channels
Segment Reporting Information [Line Items]
Segment net revenues									0	0
Net effect from recognition (deferral) of deferred net revenues (2)									0	0
Net revenues									0	0
Reportable segments | King | Other
Segment Reporting Information [Line Items]
Segment net revenues									0	0
Net effect from recognition (deferral) of deferred net revenues (2)									0	0
Net revenues									0	0
Reportable segments | King | Console
Segment Reporting Information [Line Items]
Segment net revenues									0	0
Net effect from recognition (deferral) of deferred net revenues (2)									0	0
Net revenues									0	0
Reportable segments | King | PC
Segment Reporting Information [Line Items]
Segment net revenues									117	153
Net effect from recognition (deferral) of deferred net revenues (2)									0	(1)
Net revenues									117	154
Reportable segments | King | Mobile and ancillary
Segment Reporting Information [Line Items]
Segment net revenues									1,914	1,933
Net effect from recognition (deferral) of deferred net revenues (2)									2	(3)
Net revenues									1,912	1,936
Reportable segments | King | Other
Segment Reporting Information [Line Items]
Segment net revenues									0	0
Net effect from recognition (deferral) of deferred net revenues (2)									0	0
Net revenues									0	0
Reportable segments | King | Americas
Segment Reporting Information [Line Items]
Segment net revenues									1,256	1,266
Net effect from recognition (deferral) of deferred net revenues (2)									2	(3)
Net revenues									1,254	1,269
Reportable segments | King | EMEA
Segment Reporting Information [Line Items]
Segment net revenues									557	598
Net effect from recognition (deferral) of deferred net revenues (2)									0	(1)
Net revenues									557	599
Reportable segments | King | Asia Pacific
Segment Reporting Information [Line Items]
Segment net revenues									218	222
Net effect from recognition (deferral) of deferred net revenues (2)									0	0
Net revenues									218	222
Non-reportable segments
Segment Reporting Information [Line Items]
Segment net revenues									462	480	410
Net effect from recognition (deferral) of deferred net revenues (2)									(2)	21
Net revenues									464	459
Non-reportable segments | Digital online channels
Segment Reporting Information [Line Items]
Segment net revenues									0	0
Net effect from recognition (deferral) of deferred net revenues (2)									0	0
Net revenues									0	0
Non-reportable segments | Retail channels
Segment Reporting Information [Line Items]
Segment net revenues									0	0
Net effect from recognition (deferral) of deferred net revenues (2)									0	0
Net revenues									0	0
Non-reportable segments | Other
Segment Reporting Information [Line Items]
Segment net revenues									462	480
Net effect from recognition (deferral) of deferred net revenues (2)									(2)	21
Net revenues									464	459
Non-reportable segments | Console
Segment Reporting Information [Line Items]
Segment net revenues									0	0
Net effect from recognition (deferral) of deferred net revenues (2)									0	0
Net revenues									0	0
Non-reportable segments | PC
Segment Reporting Information [Line Items]
Segment net revenues									0	0
Net effect from recognition (deferral) of deferred net revenues (2)									0	0
Net revenues									0	0
Non-reportable segments | Mobile and ancillary
Segment Reporting Information [Line Items]
Segment net revenues									0	0
Net effect from recognition (deferral) of deferred net revenues (2)									0	0
Net revenues									0	0
Non-reportable segments | Other
Segment Reporting Information [Line Items]
Segment net revenues									462	480
Net effect from recognition (deferral) of deferred net revenues (2)									(2)	21
Net revenues									464	459
Non-reportable segments | Americas
Segment Reporting Information [Line Items]
Segment net revenues									0	13
Net effect from recognition (deferral) of deferred net revenues (2)									0	0
Net revenues									0	13
Non-reportable segments | EMEA
Segment Reporting Information [Line Items]
Segment net revenues									462	467
Net effect from recognition (deferral) of deferred net revenues (2)									(2)	21
Net revenues									464	446
Non-reportable segments | Asia Pacific
Segment Reporting Information [Line Items]
Segment net revenues									0	0
Net effect from recognition (deferral) of deferred net revenues (2)									0	0
Net revenues									0	0
Reconciliation items
Segment Reporting Information [Line Items]
Net effect from recognition (deferral) of deferred net revenues (2)									101	238	(139)
Net effect from recognition (deferral) of deferred net revenues and related cost of revenues (2)									52	100	(71)
Share-based compensation expense									(166)	(209)	(178)
Amortization of intangible assets									(203)	(370)	(757)
Fees and other expenses related to the acquisition of King									0	0	(15)
Restructuring costs									(137)	(10)	(15)
Other non-cash charges									0	0	(14)
Discrete tax-related items									(17)	0	(39)
Reconciliation items | Other segments
Segment Reporting Information [Line Items]
Operating income									24	31	(19)
Elimination of intersegment revenues
Segment Reporting Information [Line Items]
Segment net revenues									(43)	(53)
Net effect from recognition (deferral) of deferred net revenues (2)									0	0
Net revenues									(43)	(53)
Elimination of intersegment revenues | Digital online channels
Segment Reporting Information [Line Items]
Segment net revenues									(43)	(53)
Net effect from recognition (deferral) of deferred net revenues (2)									0	0
Net revenues									(43)	(53)
Elimination of intersegment revenues | Retail channels
Segment Reporting Information [Line Items]
Segment net revenues									0	0
Net effect from recognition (deferral) of deferred net revenues (2)									0	0
Net revenues									0	0
Elimination of intersegment revenues | Other
Segment Reporting Information [Line Items]
Segment net revenues									0	0
Net effect from recognition (deferral) of deferred net revenues (2)									0	0
Net revenues									0	0
Elimination of intersegment revenues | Console
Segment Reporting Information [Line Items]
Segment net revenues									0	0
Net effect from recognition (deferral) of deferred net revenues (2)									0	0
Net revenues									0	0
Elimination of intersegment revenues | PC
Segment Reporting Information [Line Items]
Segment net revenues									(43)	(53)
Net effect from recognition (deferral) of deferred net revenues (2)									0	0
Net revenues									(43)	(53)
Elimination of intersegment revenues | Mobile and ancillary
Segment Reporting Information [Line Items]
Segment net revenues									0	0
Net effect from recognition (deferral) of deferred net revenues (2)									0	0
Net revenues									0	0
Elimination of intersegment revenues | Other
Segment Reporting Information [Line Items]
Segment net revenues									0	0
Net effect from recognition (deferral) of deferred net revenues (2)									0	0
Net revenues									0	0
Elimination of intersegment revenues | Americas
Segment Reporting Information [Line Items]
Segment net revenues									(21)	(28)
Net effect from recognition (deferral) of deferred net revenues (2)									0	0
Net revenues									(21)	(28)
Elimination of intersegment revenues | EMEA
Segment Reporting Information [Line Items]
Segment net revenues									(16)	(16)
Net effect from recognition (deferral) of deferred net revenues (2)									0	0
Net revenues									(16)	(16)
Elimination of intersegment revenues | Asia Pacific
Segment Reporting Information [Line Items]
Segment net revenues									(6)	(9)
Net effect from recognition (deferral) of deferred net revenues (2)									0	0
Net revenues									(6)	(9)
Elimination of intersegment revenues | Blizzard
Segment Reporting Information [Line Items]
Net revenues									$ (43)	$ (53)	$ (19)