Operating Segments and Geographic Region (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2020 USD ($) segment	Jun. 30, 2019 USD ($)	Dec. 31, 2019 USD ($)
Segment Reporting [Abstract]
Number of reportable segments | segment			3
Segment Reporting Information [Line Items]
Segment revenues	$ 2,078	$ 1,207	$ 3,600	$ 2,465
Operating income	749	336	1,361	906
Net effect from recognition (deferral) of deferred net revenues	146	(189)	(119)	(755)
Net revenues	1,932	1,396	3,719	3,220
Amortization of intangible assets	(14)	(48)	(47)	(103)
Restructuring costs	(6)	(22)	(29)	(79)
Interest and other expense (income), net (Note 12)	22	(34)	30	(31)
Income before income tax expense	727	370	1,331	937
Long-lived assets	434		434		$ 485
Digital online channels
Segment Reporting Information [Line Items]
Segment revenues	1,821	1,010	3,176	2,075
Net effect from recognition (deferral) of deferred net revenues	230	(76)	146	(404)
Net revenues	1,591	1,086	3,030	2,479
Retail channels
Segment Reporting Information [Line Items]
Segment revenues	86	81	135	161
Net effect from recognition (deferral) of deferred net revenues	(82)	(112)	(255)	(344)
Net revenues	168	193	390	505
Other
Segment Reporting Information [Line Items]
Segment revenues	171	116	289	229
Net effect from recognition (deferral) of deferred net revenues	(2)	(1)	(10)	(7)
Net revenues	173	117	299	236
Console
Segment Reporting Information [Line Items]
Segment revenues	713	261	1,077	539
Net effect from recognition (deferral) of deferred net revenues	58	(146)	(172)	(544)
Net revenues	655	407	1,249	1,083
PC
Segment Reporting Information [Line Items]
Segment revenues	519	311	998	659
Net effect from recognition (deferral) of deferred net revenues	37	(50)	17	(196)
Net revenues	482	361	981	855
Mobile and ancillary
Segment Reporting Information [Line Items]
Segment revenues	675	519	1,236	1,038
Net effect from recognition (deferral) of deferred net revenues	53	8	46	(8)
Net revenues	622	511	1,190	1,046
Other
Segment Reporting Information [Line Items]
Segment revenues	171	116	289	229
Net effect from recognition (deferral) of deferred net revenues	(2)	(1)	(10)	(7)
Net revenues	173	117	299	236
Americas
Segment Reporting Information [Line Items]
Segment revenues	1,236	644	2,041	1,314
Net effect from recognition (deferral) of deferred net revenues	124	(120)	(19)	(437)
Net revenues	1,112	$ 764	2,060	$ 1,751
Long-lived assets	$ 291		$ 291		322
US | Revenues | Geographic Concentration Risk
Segment Reporting Information [Line Items]
Revenues as a percentage of consolidated net revenues	51.00%	49.00%	50.00%	49.00%
EMEA
Segment Reporting Information [Line Items]
Segment revenues	$ 631	$ 401	$ 1,096	$ 814
Net effect from recognition (deferral) of deferred net revenues	16	(58)	(85)	(259)
Net revenues	615	$ 459	1,181	$ 1,073
Long-lived assets	$ 127		$ 127		142
UK | Revenues | Geographic Concentration Risk
Segment Reporting Information [Line Items]
Revenues as a percentage of consolidated net revenues	11.00%	9.00%	10.00%	9.00%
Asia Pacific
Segment Reporting Information [Line Items]
Segment revenues	$ 211	$ 162	$ 463	$ 337
Net effect from recognition (deferral) of deferred net revenues	6	(11)	(15)	(59)
Net revenues	205	173	478	396
Long-lived assets	16		16		$ 21
Reportable segments
Segment Reporting Information [Line Items]
Segment revenues	2,007	1,151	3,477	2,341
Operating income	974	301	1,510	607
Reportable segments | Net revenues from external customers
Segment Reporting Information [Line Items]
Segment revenues	1,979	1,148	3,433	2,333
Reportable segments | Intersegment net revenues
Segment Reporting Information [Line Items]
Segment revenues	28	3	44	8
Reportable segments | Activision
Segment Reporting Information [Line Items]
Segment revenues	993	268	1,512	585
Operating income	559	55	743	128
Net effect from recognition (deferral) of deferred net revenues	123	(160)	(138)	(605)
Net revenues	870	428	1,650	1,190
Reportable segments | Activision | Net revenues from external customers
Segment Reporting Information [Line Items]
Segment revenues	993	268	1,512	585
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	886	197	1,342	446
Net effect from recognition (deferral) of deferred net revenues	206	(51)	114	(268)
Net revenues	680	248	1,228	714
Reportable segments | Activision | Retail channels
Segment Reporting Information [Line Items]
Segment revenues	80	71	123	139
Net effect from recognition (deferral) of deferred net revenues	(83)	(109)	(252)	(337)
Net revenues	163	180	375	476
Reportable segments | Activision | Other
Segment Reporting Information [Line Items]
Segment revenues	27	0	47	0
Net effect from recognition (deferral) of deferred net revenues	0	0	0	0
Net revenues	27	0	47	0
Reportable segments | Activision | Console
Segment Reporting Information [Line Items]
Segment revenues	676	233	1,021	481
Net effect from recognition (deferral) of deferred net revenues	53	(141)	(169)	(527)
Net revenues	623	374	1,190	1,008
Reportable segments | Activision | PC
Segment Reporting Information [Line Items]
Segment revenues	167	32	256	99
Net effect from recognition (deferral) of deferred net revenues	21	(19)	(17)	(77)
Net revenues	146	51	273	176
Reportable segments | Activision | Mobile and ancillary
Segment Reporting Information [Line Items]
Segment revenues	123	3	188	5
Net effect from recognition (deferral) of deferred net revenues	49	0	48	(1)
Net revenues	74	3	140	6
Reportable segments | Activision | Other
Segment Reporting Information [Line Items]
Segment revenues	27	0	47	0
Net effect from recognition (deferral) of deferred net revenues	0	0	0	0
Net revenues	27	0	47	0
Reportable segments | Activision | Americas
Segment Reporting Information [Line Items]
Segment revenues	648	150	974	341
Net effect from recognition (deferral) of deferred net revenues	100	(105)	(46)	(371)
Net revenues	548	255	1,020	712
Reportable segments | Activision | EMEA
Segment Reporting Information [Line Items]
Segment revenues	265	93	408	189
Net effect from recognition (deferral) of deferred net revenues	17	(42)	(79)	(189)
Net revenues	248	135	487	378
Reportable segments | Activision | Asia Pacific
Segment Reporting Information [Line Items]
Segment revenues	80	25	130	55
Net effect from recognition (deferral) of deferred net revenues	6	(13)	(13)	(45)
Net revenues	74	38	143	100
Reportable segments | Blizzard
Segment Reporting Information [Line Items]
Segment revenues	461	384	914	728
Operating income	203	75	400	130
Net effect from recognition (deferral) of deferred net revenues	21	(27)	25	(144)
Net revenues	440	411	889	872
Reportable segments | Blizzard | Net revenues from external customers
Segment Reporting Information [Line Items]
Segment revenues	433	381	870	720
Reportable segments | Blizzard | Intersegment net revenues
Segment Reporting Information [Line Items]
Segment revenues	28	3	44	8
Reportable segments | Blizzard | Digital online channels
Segment Reporting Information [Line Items]
Segment revenues	410	317	827	609
Net effect from recognition (deferral) of deferred net revenues	20	(25)	29	(139)
Net revenues	390	342	798	748
Reportable segments | Blizzard | Retail channels
Segment Reporting Information [Line Items]
Segment revenues	6	10	12	22
Net effect from recognition (deferral) of deferred net revenues	1	(3)	(3)	(7)
Net revenues	5	13	15	29
Reportable segments | Blizzard | Other
Segment Reporting Information [Line Items]
Segment revenues	45	57	75	97
Net effect from recognition (deferral) of deferred net revenues	0	1	(1)	2
Net revenues	45	56	76	95
Reportable segments | Blizzard | Console
Segment Reporting Information [Line Items]
Segment revenues	37	28	56	58
Net effect from recognition (deferral) of deferred net revenues	5	(5)	(3)	(17)
Net revenues	32	33	59	75
Reportable segments | Blizzard | PC
Segment Reporting Information [Line Items]
Segment revenues	354	251	736	503
Net effect from recognition (deferral) of deferred net revenues	15	(31)	34	(120)
Net revenues	339	282	702	623
Reportable segments | Blizzard | Mobile and ancillary
Segment Reporting Information [Line Items]
Segment revenues	25	48	47	70
Net effect from recognition (deferral) of deferred net revenues	1	8	(5)	(9)
Net revenues	24	40	52	79
Reportable segments | Blizzard | Other
Segment Reporting Information [Line Items]
Segment revenues	45	57	75	97
Net effect from recognition (deferral) of deferred net revenues	0	1	(1)	2
Net revenues	45	56	76	95
Reportable segments | Blizzard | Americas
Segment Reporting Information [Line Items]
Segment revenues	235	187	409	339
Net effect from recognition (deferral) of deferred net revenues	19	(15)	22	(70)
Net revenues	216	202	387	409
Reportable segments | Blizzard | EMEA
Segment Reporting Information [Line Items]
Segment revenues	142	114	267	215
Net effect from recognition (deferral) of deferred net revenues	1	(13)	5	(61)
Net revenues	141	127	262	276
Reportable segments | Blizzard | Asia Pacific
Segment Reporting Information [Line Items]
Segment revenues	84	83	238	174
Net effect from recognition (deferral) of deferred net revenues	1	1	(2)	(13)
Net revenues	83	82	240	187
Reportable segments | King
Segment Reporting Information [Line Items]
Segment revenues	553	499	1,051	1,028
Operating income	212	171	367	349
Net effect from recognition (deferral) of deferred net revenues	4	0	3	3
Net revenues	549	499	1,048	1,025
Reportable segments | King | Net revenues from external customers
Segment Reporting Information [Line Items]
Segment revenues	553	499	1,051	1,028
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	553	499	1,051	1,028
Net effect from recognition (deferral) of deferred net revenues	4	0	3	3
Net revenues	549	499	1,048	1,025
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	26	31	50	65
Net effect from recognition (deferral) of deferred net revenues	1	0	0	1
Net revenues	25	31	50	64
Reportable segments | King | Mobile and ancillary
Segment Reporting Information [Line Items]
Segment revenues	527	468	1,001	963
Net effect from recognition (deferral) of deferred net revenues	3	0	3	2
Net revenues	524	468	998	961
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	367	308	679	638
Net effect from recognition (deferral) of deferred net revenues	5	(1)	5	4
Net revenues	362	309	674	634
Reportable segments | King | EMEA
Segment Reporting Information [Line Items]
Segment revenues	135	137	269	281
Net effect from recognition (deferral) of deferred net revenues	0	0	(2)	0
Net revenues	135	137	271	281
Reportable segments | King | Asia Pacific
Segment Reporting Information [Line Items]
Segment revenues	51	54	103	109
Net effect from recognition (deferral) of deferred net revenues	(1)	1	0	(1)
Net revenues	52	53	103	110
Non-reportable segments
Segment Reporting Information [Line Items]
Segment revenues	99	59	167	132
Net effect from recognition (deferral) of deferred net revenues	(2)	(2)	(9)	(9)
Net revenues	101	61	176	141
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	99	59	167	132
Net effect from recognition (deferral) of deferred net revenues	(2)	(2)	(9)	(9)
Net revenues	101	61	176	141
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	99	59	167	132
Net effect from recognition (deferral) of deferred net revenues	(2)	(2)	(9)	(9)
Net revenues	101	61	176	141
Non-reportable segments | Americas
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 | EMEA
Segment Reporting Information [Line Items]
Segment revenues	99	59	167	132
Net effect from recognition (deferral) of deferred net revenues	(2)	(2)	(9)	(9)
Net revenues	101	61	176	141
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	(28)	(3)	(44)	(8)
Net effect from recognition (deferral) of deferred net revenues	0	0	0	0
Net revenues	(28)	(3)	(44)	(8)
Elimination of intersegment revenues | Digital online channels
Segment Reporting Information [Line Items]
Segment revenues	(28)	(3)	(44)	(8)
Net effect from recognition (deferral) of deferred net revenues	0	0	0	0
Net revenues	(28)	(3)	(44)	(8)
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	(28)	(3)	(44)	(8)
Net effect from recognition (deferral) of deferred net revenues	0	0	0	0
Net revenues	(28)	(3)	(44)	(8)
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	(14)	(1)	(21)	(4)
Net effect from recognition (deferral) of deferred net revenues	0	1	0	0
Net revenues	(14)	(2)	(21)	(4)
Elimination of intersegment revenues | EMEA
Segment Reporting Information [Line Items]
Segment revenues	(10)	(2)	(15)	(3)
Net effect from recognition (deferral) of deferred net revenues	0	(1)	0	0
Net revenues	(10)	(1)	(15)	(3)
Elimination of intersegment revenues | Asia Pacific
Segment Reporting Information [Line Items]
Segment revenues	(4)	0	(8)	(1)
Net effect from recognition (deferral) of deferred net revenues	0	0	0	0
Net revenues	(4)	0	(8)	(1)
Reconciling items
Segment Reporting Information [Line Items]
Net effect from recognition (deferral) of deferred net revenues	(146)	189	119	755
Net effect from recognition (deferral) of deferred net revenues and related cost of revenues	(152)	135	19	576
Share-based compensation expense	(42)	(38)	(85)	(100)
Amortization of intangible assets	(14)	(47)	(47)	(102)
Restructuring costs	(6)	(22)	(29)	(79)
Reconciling items | Other segments
Segment Reporting Information [Line Items]
Operating income	$ (11)	$ 7	$ (7)	$ 4