Operating Segments and Geographic Region (Details) $ in Millions	3 Months Ended				9 Months Ended
	Sep. 30, 2019 USD ($)	Jun. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)	Sep. 30, 2018 USD ($)	Sep. 30, 2019 USD ($) segment	Sep. 30, 2018 USD ($)	Dec. 31, 2018 USD ($)
Segment Reporting [Abstract]
Number of reportable segments | segment					3
Segment Reporting Information [Line Items]
Segment revenues	$ 1,214			$ 1,658	$ 3,679	$ 4,427
Operating income	247			265	1,153	1,294
Net effect from recognition (deferral) of deferred net revenues	(68)			146	(824)	(692)
Net revenues	1,282			1,512	4,503	5,119
Amortization of intangible assets	(50)			(84)	(152)	(280)
Restructuring costs	(24)	$ (22)	$ (57)	0	(104)	0
Interest and other expense (income), net (Note 15)	(2)			13	(33)	67
Loss on extinguishment of debt	0			40	0	40
Income before income tax expense (benefit)	249			212	1,186	1,187
Long-lived assets	249				249		$ 282
Digital online channels
Segment Reporting Information [Line Items]
Segment revenues	975			1,435	3,049	3,838
Net effect from recognition (deferral) of deferred net revenues	(39)			159	(444)	(160)
Net revenues	1,014			1,276	3,493	3,998
Retail channels
Segment Reporting Information [Line Items]
Segment revenues	64			62	226	218
Net effect from recognition (deferral) of deferred net revenues	(29)			(14)	(373)	(546)
Net revenues	93			76	599	764
Other
Segment Reporting Information [Line Items]
Segment revenues	175			161	404	371
Net effect from recognition (deferral) of deferred net revenues	0			1	(7)	14
Net revenues	175			160	411	357
Console
Segment Reporting Information [Line Items]
Segment revenues	196			367	735	1,010
Net effect from recognition (deferral) of deferred net revenues	(45)			20	(589)	(720)
Net revenues	241			347	1,324	1,730
PC
Segment Reporting Information [Line Items]
Segment revenues	320			599	978	1,472
Net effect from recognition (deferral) of deferred net revenues	(21)			117	(218)	20
Net revenues	341			482	1,196	1,452
Mobile and ancillary
Segment Reporting Information [Line Items]
Segment revenues	523			531	1,562	1,574
Net effect from recognition (deferral) of deferred net revenues	(2)			8	(10)	(6)
Net revenues	525			523	1,572	1,580
Other
Segment Reporting Information [Line Items]
Segment revenues	175			161	404	371
Net effect from recognition (deferral) of deferred net revenues	0			1	(7)	14
Net revenues	175			160	411	357
Americas
Segment Reporting Information [Line Items]
Segment revenues	622			850	1,937	2,341
Net effect from recognition (deferral) of deferred net revenues	(33)			76	(469)	(399)
Net revenues	655			$ 774	2,406	$ 2,740
Long-lived assets	$ 179				$ 179		203
US | Revenues | Geographic Concentration Risk
Segment Reporting Information [Line Items]
Revenues as a percentage of consolidated net revenues	46.00%			46.00%	48.00%	47.00%
EMEA
Segment Reporting Information [Line Items]
Segment revenues	$ 426			$ 594	$ 1,240	$ 1,532
Net effect from recognition (deferral) of deferred net revenues	(26)			60	(285)	(242)
Net revenues	452			$ 534	1,525	$ 1,774
Long-lived assets	$ 58				$ 58		62
UK | Revenues | Geographic Concentration Risk
Segment Reporting Information [Line Items]
Revenues as a percentage of consolidated net revenues	13.00%			13.00%	10.00%	11.00%
Asia Pacific
Segment Reporting Information [Line Items]
Segment revenues	$ 166			$ 214	$ 502	$ 554
Net effect from recognition (deferral) of deferred net revenues	(9)			10	(70)	(51)
Net revenues	175			204	572	605
Long-lived assets	12				12		$ 17
Activision
Segment Reporting Information [Line Items]
Restructuring costs	(1)				(12)
Blizzard
Segment Reporting Information [Line Items]
Restructuring costs	(12)				(52)
King
Segment Reporting Information [Line Items]
Restructuring costs	(4)				(17)
Other segments
Segment Reporting Information [Line Items]
Restructuring costs	(7)				(23)
Reportable segments
Segment Reporting Information [Line Items]
Segment revenues	1,103			1,538	3,443	4,195
Operating income	294			485	900	1,275
Reportable segments | Net revenues from external customers
Segment Reporting Information [Line Items]
Segment revenues	1,101			1,530	3,434	4,181
Reportable segments | Intersegment net revenues
Segment Reporting Information [Line Items]
Segment revenues	2			8	9	14
Reportable segments | Activision
Segment Reporting Information [Line Items]
Segment revenues	209			397	794	1,047
Operating income	26			112	153	288
Net effect from recognition (deferral) of deferred net revenues	(43)			45	(648)	(770)
Net revenues	252			352	1,442	1,817
Reportable segments | Activision | Net revenues from external customers
Segment Reporting Information [Line Items]
Segment revenues	209			397	794	1,047
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]
Segment revenues	163			356	609	876
Net effect from recognition (deferral) of deferred net revenues	(16)			57	(285)	(234)
Net revenues	179			299	894	1,110
Reportable segments | Activision | Retail channels
Segment Reporting Information [Line Items]
Segment revenues	46			41	185	171
Net effect from recognition (deferral) of deferred net revenues	(27)			(12)	(363)	(536)
Net revenues	73			53	548	707
Reportable segments | Activision | Other
Segment Reporting Information [Line Items]
Segment revenues	0			0	0	0
Net effect from recognition (deferral) of deferred net revenues	0			0	0	0
Net revenues	0			0	0	0
Reportable segments | Activision | Console
Segment Reporting Information [Line Items]
Segment revenues	178			336	659	902
Net effect from recognition (deferral) of deferred net revenues	(36)			29	(563)	(695)
Net revenues	214			307	1,222	1,597
Reportable segments | Activision | PC
Segment Reporting Information [Line Items]
Segment revenues	22			56	120	132
Net effect from recognition (deferral) of deferred net revenues	(7)			16	(84)	(76)
Net revenues	29			40	204	208
Reportable segments | Activision | Mobile and ancillary
Segment Reporting Information [Line Items]
Segment revenues	9			5	15	13
Net effect from recognition (deferral) of deferred net revenues	0			0	(1)	1
Net revenues	9			5	16	12
Reportable segments | Activision | Other
Segment Reporting Information [Line Items]
Segment revenues	0			0	0	0
Net effect from recognition (deferral) of deferred net revenues	0			0	0	0
Net revenues	0			0	0	0
Reportable segments | Activision | Americas
Segment Reporting Information [Line Items]
Segment revenues	121			247	462	635
Net effect from recognition (deferral) of deferred net revenues	(20)			33	(390)	(439)
Net revenues	141			214	852	1,074
Reportable segments | Activision | EMEA
Segment Reporting Information [Line Items]
Segment revenues	63			117	252	326
Net effect from recognition (deferral) of deferred net revenues	(16)			8	(205)	(287)
Net revenues	79			109	457	613
Reportable segments | Activision | Asia Pacific
Segment Reporting Information [Line Items]
Segment revenues	25			33	80	86
Net effect from recognition (deferral) of deferred net revenues	(7)			4	(53)	(44)
Net revenues	32			29	133	130
Reportable segments | Blizzard
Segment Reporting Information [Line Items]
Segment revenues	394			635	1,122	1,606
Operating income	74			189	204	444
Net effect from recognition (deferral) of deferred net revenues	(23)			97	(167)	70
Net revenues	417			538	1,289	1,536
Reportable segments | Blizzard | Net revenues from external customers
Segment Reporting Information [Line Items]
Segment revenues	392			627	1,113	1,592
Reportable segments | Blizzard | Intersegment net revenues
Segment Reporting Information [Line Items]
Segment revenues	2			8	9	14
Reportable segments | Blizzard | Digital online channels
Segment Reporting Information [Line Items]
Segment revenues	314			581	922	1,434
Net effect from recognition (deferral) of deferred net revenues	(21)			101	(159)	79
Net revenues	335			480	1,081	1,355
Reportable segments | Blizzard | Retail channels
Segment Reporting Information [Line Items]
Segment revenues	18			21	41	47
Net effect from recognition (deferral) of deferred net revenues	(2)			(2)	(10)	(10)
Net revenues	20			23	51	57
Reportable segments | Blizzard | Other
Segment Reporting Information [Line Items]
Segment revenues	62			33	159	125
Net effect from recognition (deferral) of deferred net revenues	0			(2)	2	1
Net revenues	62			35	157	124
Reportable segments | Blizzard | Console
Segment Reporting Information [Line Items]
Segment revenues	18			31	76	108
Net effect from recognition (deferral) of deferred net revenues	(9)			(9)	(26)	(25)
Net revenues	27			40	102	133
Reportable segments | Blizzard | PC
Segment Reporting Information [Line Items]
Segment revenues	272			515	776	1,236
Net effect from recognition (deferral) of deferred net revenues	(14)			101	(133)	96
Net revenues	286			414	909	1,140
Reportable segments | Blizzard | Mobile and ancillary
Segment Reporting Information [Line Items]
Segment revenues	42			56	111	137
Net effect from recognition (deferral) of deferred net revenues	0			7	(10)	(2)
Net revenues	42			49	121	139
Reportable segments | Blizzard | Other
Segment Reporting Information [Line Items]
Segment revenues	62			33	159	125
Net effect from recognition (deferral) of deferred net revenues	0			(2)	2	1
Net revenues	62			35	157	124
Reportable segments | Blizzard | Americas
Segment Reporting Information [Line Items]
Segment revenues	193			285	533	759
Net effect from recognition (deferral) of deferred net revenues	(11)			43	(80)	43
Net revenues	204			242	613	716
Reportable segments | Blizzard | EMEA
Segment Reporting Information [Line Items]
Segment revenues	114			220	329	531
Net effect from recognition (deferral) of deferred net revenues	(10)			48	(71)	34
Net revenues	124			172	400	497
Reportable segments | Blizzard | Asia Pacific
Segment Reporting Information [Line Items]
Segment revenues	87			130	260	316
Net effect from recognition (deferral) of deferred net revenues	(2)			6	(16)	(7)
Net revenues	89			124	276	323
Reportable segments | King
Segment Reporting Information [Line Items]
Segment revenues	500			506	1,527	1,542
Operating income	194			184	543	543
Net effect from recognition (deferral) of deferred net revenues	(2)			1	0	(5)
Net revenues	502			505	1,527	1,547
Reportable segments | King | Net revenues from external customers
Segment Reporting Information [Line Items]
Segment revenues	500			506	1,527	1,542
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]
Segment revenues	500			506	1,527	1,542
Net effect from recognition (deferral) of deferred net revenues	(2)			1	0	(5)
Net revenues	502			505	1,527	1,547
Reportable segments | King | Retail channels
Segment Reporting Information [Line Items]
Segment revenues	0			0	0	0
Net effect from recognition (deferral) of deferred net revenues	0			0	0	0
Net revenues	0			0	0	0
Reportable segments | King | Other
Segment Reporting Information [Line Items]
Segment revenues	0			0	0	0
Net effect from recognition (deferral) of deferred net revenues	0			0	0	0
Net revenues	0			0	0	0
Reportable segments | King | Console
Segment Reporting Information [Line Items]
Segment revenues	0			0	0	0
Net effect from recognition (deferral) of deferred net revenues	0			0	0	0
Net revenues	0			0	0	0
Reportable segments | King | PC
Segment Reporting Information [Line Items]
Segment revenues	28			36	91	118
Net effect from recognition (deferral) of deferred net revenues	0			0	(1)	0
Net revenues	28			36	92	118
Reportable segments | King | Mobile and ancillary
Segment Reporting Information [Line Items]
Segment revenues	472			470	1,436	1,424
Net effect from recognition (deferral) of deferred net revenues	(2)			1	1	(5)
Net revenues	474			469	1,435	1,429
Reportable segments | King | Other
Segment Reporting Information [Line Items]
Segment revenues	0			0	0	0
Net effect from recognition (deferral) of deferred net revenues	0			0	0	0
Net revenues	0			0	0	0
Reportable segments | King | Americas
Segment Reporting Information [Line Items]
Segment revenues	309			309	947	942
Net effect from recognition (deferral) of deferred net revenues	(2)			0	1	(3)
Net revenues	311			309	946	945
Reportable segments | King | EMEA
Segment Reporting Information [Line Items]
Segment revenues	137			144	417	446
Net effect from recognition (deferral) of deferred net revenues	0			1	0	(2)
Net revenues	137			143	417	448
Reportable segments | King | Asia Pacific
Segment Reporting Information [Line Items]
Segment revenues	54			53	163	154
Net effect from recognition (deferral) of deferred net revenues	0			0	(1)	0
Net revenues	54			53	164	154
Non-reportable segments
Segment Reporting Information [Line Items]
Segment revenues	113			128	245	246
Net effect from recognition (deferral) of deferred net revenues	0			3	(9)	13
Net revenues	113			125	254	233
Non-reportable segments | Digital online channels
Segment Reporting Information [Line Items]
Segment revenues	0			0	0	0
Net effect from recognition (deferral) of deferred net revenues	0			0	0	0
Net revenues	0			0	0	0
Non-reportable segments | Retail channels
Segment Reporting Information [Line Items]
Segment revenues	0			0	0	0
Net effect from recognition (deferral) of deferred net revenues	0			0	0	0
Net revenues	0			0	0	0
Non-reportable segments | Other
Segment Reporting Information [Line Items]
Segment revenues	113			128	245	246
Net effect from recognition (deferral) of deferred net revenues	0			3	(9)	13
Net revenues	113			125	254	233
Non-reportable segments | Console
Segment Reporting Information [Line Items]
Segment revenues	0			0	0	0
Net effect from recognition (deferral) of deferred net revenues	0			0	0	0
Net revenues	0			0	0	0
Non-reportable segments | PC
Segment Reporting Information [Line Items]
Segment revenues	0			0	0	0
Net effect from recognition (deferral) of deferred net revenues	0			0	0	0
Net revenues	0			0	0	0
Non-reportable segments | Mobile and ancillary
Segment Reporting Information [Line Items]
Segment revenues	0			0	0	0
Net effect from recognition (deferral) of deferred net revenues	0			0	0	0
Net revenues	0			0	0	0
Non-reportable segments | Other
Segment Reporting Information [Line Items]
Segment revenues	113			128	245	246
Net effect from recognition (deferral) of deferred net revenues	0			3	(9)	13
Net revenues	113			125	254	233
Non-reportable segments | Americas
Segment Reporting Information [Line Items]
Segment revenues	0			13	0	13
Net effect from recognition (deferral) of deferred net revenues	0			0	0	0
Net revenues	0			13	0	13
Non-reportable segments | EMEA
Segment Reporting Information [Line Items]
Segment revenues	113			115	245	233
Net effect from recognition (deferral) of deferred net revenues	0			3	(9)	13
Net revenues	113			112	254	220
Non-reportable segments | Asia Pacific
Segment Reporting Information [Line Items]
Segment revenues	0			0	0	0
Net effect from recognition (deferral) of deferred net revenues	0			0	0	0
Net revenues	0			0	0	0
Elimination of intersegment revenues
Segment Reporting Information [Line Items]
Segment revenues	(2)			(8)	(9)	(14)
Net effect from recognition (deferral) of deferred net revenues	0			0	0	0
Net revenues	(2)			(8)	(9)	(14)
Elimination of intersegment revenues | Digital online channels
Segment Reporting Information [Line Items]
Segment revenues	(2)			(8)	(9)	(14)
Net effect from recognition (deferral) of deferred net revenues	0			0	0	0
Net revenues	(2)			(8)	(9)	(14)
Elimination of intersegment revenues | Retail channels
Segment Reporting Information [Line Items]
Segment revenues	0			0	0	0
Net effect from recognition (deferral) of deferred net revenues	0			0	0	0
Net revenues	0			0	0	0
Elimination of intersegment revenues | Other
Segment Reporting Information [Line Items]
Segment revenues	0			0	0	0
Net effect from recognition (deferral) of deferred net revenues	0			0	0	0
Net revenues	0			0	0	0
Elimination of intersegment revenues | Console
Segment Reporting Information [Line Items]
Segment revenues	0			0	0	0
Net effect from recognition (deferral) of deferred net revenues	0			0	0	0
Net revenues	0			0	0	0
Elimination of intersegment revenues | PC
Segment Reporting Information [Line Items]
Segment revenues	(2)			(8)	(9)	(14)
Net effect from recognition (deferral) of deferred net revenues	0			0	0	0
Net revenues	(2)			(8)	(9)	(14)
Elimination of intersegment revenues | Mobile and ancillary
Segment Reporting Information [Line Items]
Segment revenues	0			0	0	0
Net effect from recognition (deferral) of deferred net revenues	0			0	0	0
Net revenues	0			0	0	0
Elimination of intersegment revenues | Other
Segment Reporting Information [Line Items]
Segment revenues	0			0	0	0
Net effect from recognition (deferral) of deferred net revenues	0			0	0	0
Net revenues	0			0	0	0
Elimination of intersegment revenues | Americas
Segment Reporting Information [Line Items]
Segment revenues	(1)			(4)	(5)	(8)
Net effect from recognition (deferral) of deferred net revenues	0			0	0	0
Net revenues	(1)			(4)	(5)	(8)
Elimination of intersegment revenues | EMEA
Segment Reporting Information [Line Items]
Segment revenues	(1)			(2)	(3)	(4)
Net effect from recognition (deferral) of deferred net revenues	0			0	0	0
Net revenues	(1)			(2)	(3)	(4)
Elimination of intersegment revenues | Asia Pacific
Segment Reporting Information [Line Items]
Segment revenues	0			(2)	(1)	(2)
Net effect from recognition (deferral) of deferred net revenues	0			0	0	0
Net revenues	0			(2)	(1)	(2)
Reconciling items
Segment Reporting Information [Line Items]
Net effect from recognition (deferral) of deferred net revenues	68			(146)	824	692
Net effect from recognition (deferral) of deferred net revenues and related cost of revenues	53			(89)	629	468
Share-based compensation expense	(27)			(55)	(127)	(166)
Amortization of intangible assets	(50)			(83)	(151)	(279)
Restructuring costs	(28)			0	(108)	0
Reconciling items | Other segments
Segment Reporting Information [Line Items]
Operating income	$ 5			$ 7	$ 10	$ (4)