Operating Segments and Geographic Region (Details) $ in Millions	3 Months Ended			6 Months Ended
	Jun. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)	Jun. 30, 2018 USD ($)	Jun. 30, 2019 USD ($) segment	Jun. 30, 2018 USD ($)	Dec. 31, 2018 USD ($)
Segment Reporting [Abstract]
Number of reportable segments | segment				3
Segment Reporting Information [Line Items]
Net revenues	$ 1,396		$ 1,641	$ 3,220	$ 3,607
Net effect from recognition (deferral) of deferred net revenues	(189)		(256)	(755)	(838)
Segment revenues	1,207		1,385	2,465	2,769
Operating income	336		434	906	1,029
Amortization of intangible assets	(48)		(77)	(103)	(196)
Restructuring costs	(22)	$ (57)	0	(79)	0
Interest and other expense (income), net (Note 15)	(34)		26	(31)	54
Income before income tax expense	370		408	937	975
Long-lived assets	259			259		$ 282
Digital online channels
Segment Reporting Information [Line Items]
Net revenues	1,086		1,259	2,479	2,720
Net effect from recognition (deferral) of deferred net revenues	(76)		(62)	(404)	(319)
Segment revenues	1,010		1,197	2,075	2,401
Retail channels
Segment Reporting Information [Line Items]
Net revenues	193		278	505	690
Net effect from recognition (deferral) of deferred net revenues	(112)		(202)	(344)	(533)
Segment revenues	81		76	161	157
Other
Segment Reporting Information [Line Items]
Net revenues	117		104	236	197
Net effect from recognition (deferral) of deferred net revenues	(1)		8	(7)	14
Segment revenues	116		112	229	211
Console
Segment Reporting Information [Line Items]
Net revenues	407		565	1,083	1,382
Net effect from recognition (deferral) of deferred net revenues	(146)		(232)	(544)	(740)
Segment revenues	261		333	539	642
PC
Segment Reporting Information [Line Items]
Net revenues	361		451	855	971
Net effect from recognition (deferral) of deferred net revenues	(50)		(28)	(196)	(97)
Segment revenues	311		423	659	874
Mobile and ancillary
Segment Reporting Information [Line Items]
Net revenues	511		521	1,046	1,057
Net effect from recognition (deferral) of deferred net revenues	8		(4)	(8)	(15)
Segment revenues	519		517	1,038	1,042
Other
Segment Reporting Information [Line Items]
Net revenues	117		104	236	197
Net effect from recognition (deferral) of deferred net revenues	(1)		8	(7)	14
Segment revenues	116		112	229	211
Americas
Segment Reporting Information [Line Items]
Net revenues	764		900	1,751	1,966
Net effect from recognition (deferral) of deferred net revenues	(120)		(141)	(437)	(474)
Segment revenues	644		$ 759	1,314	$ 1,492
Long-lived assets	$ 190			$ 190		203
US | Revenues | Geographic Concentration Risk
Segment Reporting Information [Line Items]
Revenues as a percentage of consolidated net revenues	49.00%		49.00%	49.00%	48.00%
EMEA
Segment Reporting Information [Line Items]
Net revenues	$ 459		$ 552	$ 1,073	$ 1,239
Net effect from recognition (deferral) of deferred net revenues	(58)		(100)	(259)	(302)
Segment revenues	401		$ 452	814	$ 937
Long-lived assets	$ 56			$ 56		62
UK | Revenues | Geographic Concentration Risk
Segment Reporting Information [Line Items]
Revenues as a percentage of consolidated net revenues	9.00%		10.00%	9.00%	10.00%
Asia Pacific
Segment Reporting Information [Line Items]
Net revenues	$ 173		$ 189	$ 396	$ 402
Net effect from recognition (deferral) of deferred net revenues	(11)		(15)	(59)	(62)
Segment revenues	162		174	337	340
Long-lived assets	13			13		$ 17
Activision
Segment Reporting Information [Line Items]
Restructuring costs	(2)			(11)
Blizzard
Segment Reporting Information [Line Items]
Restructuring costs	(13)			(39)
King
Segment Reporting Information [Line Items]
Restructuring costs	(6)			(13)
Other segments
Segment Reporting Information [Line Items]
Restructuring costs	(1)			(16)
Reportable segments
Segment Reporting Information [Line Items]
Segment revenues	1,151		1,329	2,341	2,657
Operating income	301		386	607	790
Reportable segments | Net revenues from external customers
Segment Reporting Information [Line Items]
Segment revenues	1,148		1,325	2,333	2,651
Reportable segments | Intersegment net revenues
Segment Reporting Information [Line Items]
Segment revenues	3		4	8	6
Reportable segments | Activision
Segment Reporting Information [Line Items]
Net revenues	428		592	1,190	1,465
Net effect from recognition (deferral) of deferred net revenues	(160)		(254)	(605)	(814)
Segment revenues	268		338	585	651
Operating income	55		84	128	175
Reportable segments | Activision | Net revenues from external customers
Segment Reporting Information [Line Items]
Segment revenues	268		338	585	651
Reportable segments | Activision | Intersegment net revenues
Segment Reporting Information [Line Items]
Segment revenues	0		0	0	0
Reportable segments | Activision | Digital online channels
Segment Reporting Information [Line Items]
Net revenues	248		333	714	809
Net effect from recognition (deferral) of deferred net revenues	(51)		(58)	(268)	(290)
Segment revenues	197		275	446	519
Reportable segments | Activision | Retail channels
Segment Reporting Information [Line Items]
Net revenues	180		259	476	656
Net effect from recognition (deferral) of deferred net revenues	(109)		(196)	(337)	(524)
Segment revenues	71		63	139	132
Reportable segments | Activision | Other
Segment Reporting Information [Line Items]
Net revenues	0		0	0	0
Net effect from recognition (deferral) of deferred net revenues	0		0	0	0
Segment revenues	0		0	0	0
Reportable segments | Activision | Console
Segment Reporting Information [Line Items]
Net revenues	374		520	1,008	1,289
Net effect from recognition (deferral) of deferred net revenues	(141)		(233)	(527)	(723)
Segment revenues	233		287	481	566
Reportable segments | Activision | PC
Segment Reporting Information [Line Items]
Net revenues	51		69	176	169
Net effect from recognition (deferral) of deferred net revenues	(19)		(21)	(77)	(91)
Segment revenues	32		48	99	78
Reportable segments | Activision | Mobile and ancillary
Segment Reporting Information [Line Items]
Net revenues	3		3	6	7
Net effect from recognition (deferral) of deferred net revenues	0		0	(1)	0
Segment revenues	3		3	5	7
Reportable segments | Activision | Other
Segment Reporting Information [Line Items]
Net revenues	0		0	0	0
Net effect from recognition (deferral) of deferred net revenues	0		0	0	0
Segment revenues	0		0	0	0
Reportable segments | Activision | Americas
Segment Reporting Information [Line Items]
Net revenues	255		349	712	859
Net effect from recognition (deferral) of deferred net revenues	(105)		(143)	(371)	(471)
Segment revenues	150		206	341	388
Reportable segments | Activision | EMEA
Segment Reporting Information [Line Items]
Net revenues	135		199	378	504
Net effect from recognition (deferral) of deferred net revenues	(42)		(97)	(189)	(295)
Segment revenues	93		102	189	209
Reportable segments | Activision | Asia Pacific
Segment Reporting Information [Line Items]
Net revenues	38		44	100	102
Net effect from recognition (deferral) of deferred net revenues	(13)		(14)	(45)	(48)
Segment revenues	25		30	55	54
Reportable segments | Blizzard
Segment Reporting Information [Line Items]
Net revenues	411		488	872	997
Net effect from recognition (deferral) of deferred net revenues	(27)		1	(144)	(27)
Segment revenues	384		489	728	970
Operating income	75		133	130	255
Reportable segments | Blizzard | Net revenues from external customers
Segment Reporting Information [Line Items]
Segment revenues	381		485	720	964
Reportable segments | Blizzard | Intersegment net revenues
Segment Reporting Information [Line Items]
Segment revenues	3		4	8	6
Reportable segments | Blizzard | Digital online channels
Segment Reporting Information [Line Items]
Net revenues	342		420	748	875
Net effect from recognition (deferral) of deferred net revenues	(25)		4	(139)	(23)
Segment revenues	317		424	609	852
Reportable segments | Blizzard | Retail channels
Segment Reporting Information [Line Items]
Net revenues	13		19	29	33
Net effect from recognition (deferral) of deferred net revenues	(3)		(6)	(7)	(8)
Segment revenues	10		13	22	25
Reportable segments | Blizzard | Other
Segment Reporting Information [Line Items]
Net revenues	56		49	95	89
Net effect from recognition (deferral) of deferred net revenues	1		3	2	4
Segment revenues	57		52	97	93
Reportable segments | Blizzard | Console
Segment Reporting Information [Line Items]
Net revenues	33		45	75	93
Net effect from recognition (deferral) of deferred net revenues	(5)		1	(17)	(17)
Segment revenues	28		46	58	76
Reportable segments | Blizzard | PC
Segment Reporting Information [Line Items]
Net revenues	282		347	623	726
Net effect from recognition (deferral) of deferred net revenues	(31)		(6)	(120)	(6)
Segment revenues	251		341	503	720
Reportable segments | Blizzard | Mobile and ancillary
Segment Reporting Information [Line Items]
Net revenues	40		47	79	89
Net effect from recognition (deferral) of deferred net revenues	8		3	(9)	(8)
Segment revenues	48		50	70	81
Reportable segments | Blizzard | Other
Segment Reporting Information [Line Items]
Net revenues	56		49	95	89
Net effect from recognition (deferral) of deferred net revenues	1		3	2	4
Segment revenues	57		52	97	93
Reportable segments | Blizzard | Americas
Segment Reporting Information [Line Items]
Net revenues	202		239	409	473
Net effect from recognition (deferral) of deferred net revenues	(15)		7	(70)	0
Segment revenues	187		246	339	473
Reportable segments | Blizzard | EMEA
Segment Reporting Information [Line Items]
Net revenues	127		155	276	325
Net effect from recognition (deferral) of deferred net revenues	(13)		(6)	(61)	(14)
Segment revenues	114		149	215	311
Reportable segments | Blizzard | Asia Pacific
Segment Reporting Information [Line Items]
Net revenues	82		94	187	199
Net effect from recognition (deferral) of deferred net revenues	1		0	(13)	(13)
Segment revenues	83		94	174	186
Reportable segments | King
Segment Reporting Information [Line Items]
Net revenues	499		510	1,025	1,043
Net effect from recognition (deferral) of deferred net revenues	0		(8)	3	(7)
Segment revenues	499		502	1,028	1,036
Operating income	171		169	349	360
Reportable segments | King | Net revenues from external customers
Segment Reporting Information [Line Items]
Segment revenues	499		502	1,028	1,036
Reportable segments | King | Intersegment net revenues
Segment Reporting Information [Line Items]
Segment revenues	0		0	0	0
Reportable segments | King | Digital online channels
Segment Reporting Information [Line Items]
Net revenues	499		510	1,025	1,042
Net effect from recognition (deferral) of deferred net revenues	0		(8)	3	(6)
Segment revenues	499		502	1,028	1,036
Reportable segments | King | Retail channels
Segment Reporting Information [Line Items]
Net revenues	0		0	0	1
Net effect from recognition (deferral) of deferred net revenues	0		0	0	(1)
Segment revenues	0		0	0	0
Reportable segments | King | Other
Segment Reporting Information [Line Items]
Net revenues	0		0	0	0
Net effect from recognition (deferral) of deferred net revenues	0		0	0	0
Segment revenues	0		0	0	0
Reportable segments | King | Console
Segment Reporting Information [Line Items]
Net revenues	0		0	0	0
Net effect from recognition (deferral) of deferred net revenues	0		0	0	0
Segment revenues	0		0	0	0
Reportable segments | King | PC
Segment Reporting Information [Line Items]
Net revenues	31		39	64	82
Net effect from recognition (deferral) of deferred net revenues	0		(1)	1	0
Segment revenues	31		38	65	82
Reportable segments | King | Mobile and ancillary
Segment Reporting Information [Line Items]
Net revenues	468		471	961	961
Net effect from recognition (deferral) of deferred net revenues	0		(7)	2	(7)
Segment revenues	468		464	963	954
Reportable segments | King | Other
Segment Reporting Information [Line Items]
Net revenues	0		0	0	0
Net effect from recognition (deferral) of deferred net revenues	0		0	0	0
Segment revenues	0		0	0	0
Reportable segments | King | Americas
Segment Reporting Information [Line Items]
Net revenues	309		315	634	637
Net effect from recognition (deferral) of deferred net revenues	(1)		(5)	4	(3)
Segment revenues	308		310	638	634
Reportable segments | King | EMEA
Segment Reporting Information [Line Items]
Net revenues	137		144	281	305
Net effect from recognition (deferral) of deferred net revenues	0		(2)	0	(4)
Segment revenues	137		142	281	301
Reportable segments | King | Asia Pacific
Segment Reporting Information [Line Items]
Net revenues	53		51	110	101
Net effect from recognition (deferral) of deferred net revenues	1		(1)	(1)	0
Segment revenues	54		50	109	101
Non-reportable segments
Segment Reporting Information [Line Items]
Net revenues	61		55	141	108
Net effect from recognition (deferral) of deferred net revenues	(2)		5	(9)	10
Segment revenues	59		60	132	118
Non-reportable segments | Digital online channels
Segment Reporting Information [Line Items]
Net revenues	0		0	0	0
Net effect from recognition (deferral) of deferred net revenues	0		0	0	0
Segment revenues	0		0	0	0
Non-reportable segments | Retail channels
Segment Reporting Information [Line Items]
Net revenues	0		0	0	0
Net effect from recognition (deferral) of deferred net revenues	0		0	0	0
Segment revenues	0		0	0	0
Non-reportable segments | Other
Segment Reporting Information [Line Items]
Net revenues	61		55	141	108
Net effect from recognition (deferral) of deferred net revenues	(2)		5	(9)	10
Segment revenues	59		60	132	118
Non-reportable segments | Console
Segment Reporting Information [Line Items]
Net revenues	0		0	0	0
Net effect from recognition (deferral) of deferred net revenues	0		0	0	0
Segment revenues	0		0	0	0
Non-reportable segments | PC
Segment Reporting Information [Line Items]
Net revenues	0		0	0	0
Net effect from recognition (deferral) of deferred net revenues	0		0	0	0
Segment revenues	0		0	0	0
Non-reportable segments | Mobile and ancillary
Segment Reporting Information [Line Items]
Net revenues	0		0	0	0
Net effect from recognition (deferral) of deferred net revenues	0		0	0	0
Segment revenues	0		0	0	0
Non-reportable segments | Other
Segment Reporting Information [Line Items]
Net revenues	61		55	141	108
Net effect from recognition (deferral) of deferred net revenues	(2)		5	(9)	10
Segment revenues	59		60	132	118
Non-reportable segments | Americas
Segment Reporting Information [Line Items]
Net revenues	0		0	0	0
Net effect from recognition (deferral) of deferred net revenues	0		0	0	0
Segment revenues	0		0	0	0
Non-reportable segments | EMEA
Segment Reporting Information [Line Items]
Net revenues	61		55	141	108
Net effect from recognition (deferral) of deferred net revenues	(2)		5	(9)	10
Segment revenues	59		60	132	118
Non-reportable segments | Asia Pacific
Segment Reporting Information [Line Items]
Net revenues	0		0	0	0
Net effect from recognition (deferral) of deferred net revenues	0		0	0	0
Segment revenues	0		0	0	0
Elimination of intersegment revenues
Segment Reporting Information [Line Items]
Net revenues	(3)		(4)	(8)	(6)
Net effect from recognition (deferral) of deferred net revenues	0		0	0	0
Segment revenues	(3)		(4)	(8)	(6)
Elimination of intersegment revenues | Digital online channels
Segment Reporting Information [Line Items]
Net revenues	(3)		(4)	(8)	(6)
Net effect from recognition (deferral) of deferred net revenues	0		0	0	0
Segment revenues	(3)		(4)	(8)	(6)
Elimination of intersegment revenues | Retail channels
Segment Reporting Information [Line Items]
Net revenues	0		0	0	0
Net effect from recognition (deferral) of deferred net revenues	0		0	0	0
Segment revenues	0		0	0	0
Elimination of intersegment revenues | Other
Segment Reporting Information [Line Items]
Net revenues	0		0	0	0
Net effect from recognition (deferral) of deferred net revenues	0		0	0	0
Segment revenues	0		0	0	0
Elimination of intersegment revenues | Console
Segment Reporting Information [Line Items]
Net revenues	0		0	0	0
Net effect from recognition (deferral) of deferred net revenues	0		0	0	0
Segment revenues	0		0	0	0
Elimination of intersegment revenues | PC
Segment Reporting Information [Line Items]
Net revenues	(3)		(4)	(8)	(6)
Net effect from recognition (deferral) of deferred net revenues	0		0	0	0
Segment revenues	(3)		(4)	(8)	(6)
Elimination of intersegment revenues | Mobile and ancillary
Segment Reporting Information [Line Items]
Net revenues	0		0	0	0
Net effect from recognition (deferral) of deferred net revenues	0		0	0	0
Segment revenues	0		0	0	0
Elimination of intersegment revenues | Other
Segment Reporting Information [Line Items]
Net revenues	0		0	0	0
Net effect from recognition (deferral) of deferred net revenues	0		0	0	0
Segment revenues	0		0	0	0
Elimination of intersegment revenues | Americas
Segment Reporting Information [Line Items]
Net revenues	(2)		(3)	(4)	(3)
Net effect from recognition (deferral) of deferred net revenues	1		0	0	0
Segment revenues	(1)		(3)	(4)	(3)
Elimination of intersegment revenues | EMEA
Segment Reporting Information [Line Items]
Net revenues	(1)		(1)	(3)	(3)
Net effect from recognition (deferral) of deferred net revenues	(1)		0	0	1
Segment revenues	(2)		(1)	(3)	(2)
Elimination of intersegment revenues | Asia Pacific
Segment Reporting Information [Line Items]
Net revenues	0		0	(1)	0
Net effect from recognition (deferral) of deferred net revenues	0		0	0	(1)
Segment revenues	0		0	(1)	(1)
Reconciling items
Segment Reporting Information [Line Items]
Net effect from recognition (deferral) of deferred net revenues	189		256	755	838
Net effect from recognition (deferral) of deferred net revenues and related cost of revenues	135		182	576	557
Share-based compensation expense	(38)		(57)	(100)	(111)
Amortization of intangible assets	(47)		(77)	(102)	(196)
Restructuring costs	(22)		0	(79)	0
Reconciling items | Other segments
Segment Reporting Information [Line Items]
Operating income	$ 7		$ 0	$ 4	$ (11)