Operating Segments and Geographic Region (Details) $ in Millions	3 Months Ended		15 Months Ended
	Mar. 31, 2020 USD ($) segment	Mar. 31, 2019 USD ($)	Mar. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Segment Reporting [Abstract]
Number of reportable segments | segment	3
Segment Reporting Information [Line Items]
Segment revenues	$ 1,522	$ 1,258
Operating income	612	570
Net effect from recognition (deferral) of deferred net revenues	(266)	(567)
Net revenues	1,788	1,825
Amortization of intangible assets	(33)	(55)
Restructuring costs	(23)	(57)	$ (160)
Interest and other expense (income), net (Note 12)	8	3
Income before income tax expense	604	567
Long-lived assets	463		463	$ 485
Digital online channels
Segment Reporting Information [Line Items]
Segment revenues	1,355	1,065
Net effect from recognition (deferral) of deferred net revenues	(86)	(328)
Net revenues	1,441	1,393
Retail channels
Segment Reporting Information [Line Items]
Segment revenues	49	80
Net effect from recognition (deferral) of deferred net revenues	(172)	(233)
Net revenues	221	313
Other
Segment Reporting Information [Line Items]
Segment revenues	118	113
Net effect from recognition (deferral) of deferred net revenues	(8)	(6)
Net revenues	126	119
Console
Segment Reporting Information [Line Items]
Segment revenues	363	279
Net effect from recognition (deferral) of deferred net revenues	(231)	(398)
Net revenues	594	677
PC
Segment Reporting Information [Line Items]
Segment revenues	479	345
Net effect from recognition (deferral) of deferred net revenues	(19)	(149)
Net revenues	498	494
Mobile and ancillary
Segment Reporting Information [Line Items]
Segment revenues	562	521
Net effect from recognition (deferral) of deferred net revenues	(8)	(14)
Net revenues	570	535
Other
Segment Reporting Information [Line Items]
Segment revenues	118	113
Net effect from recognition (deferral) of deferred net revenues	(8)	(6)
Net revenues	126	119
Americas
Segment Reporting Information [Line Items]
Segment revenues	805	670
Net effect from recognition (deferral) of deferred net revenues	(143)	(318)
Net revenues	948	$ 988
Long-lived assets	$ 312		312	322
US | Revenues | Geographic Concentration Risk
Segment Reporting Information [Line Items]
Revenues as a percentage of consolidated net revenues	47.00%	49.00%
EMEA
Segment Reporting Information [Line Items]
Segment revenues	$ 465	$ 414
Net effect from recognition (deferral) of deferred net revenues	(101)	(200)
Net revenues	566	$ 614
Long-lived assets	$ 133		133	142
UK | Revenues | Geographic Concentration Risk
Segment Reporting Information [Line Items]
Revenues as a percentage of consolidated net revenues	9.00%	10.00%
Asia Pacific
Segment Reporting Information [Line Items]
Segment revenues	$ 252	$ 174
Net effect from recognition (deferral) of deferred net revenues	(22)	(49)
Net revenues	274	223
Long-lived assets	18		18	$ 21
Activision
Segment Reporting Information [Line Items]
Restructuring costs	(2)	(9)	(21)
Blizzard
Segment Reporting Information [Line Items]
Restructuring costs	(21)	(26)	(94)
King
Segment Reporting Information [Line Items]
Restructuring costs	1	(8)	(19)
Other segments
Segment Reporting Information [Line Items]
Restructuring costs	(1)	(14)	$ (26)
Reportable segments
Segment Reporting Information [Line Items]
Segment revenues	1,469	1,190
Operating income	537	306
Reportable segments | Net revenues from external customers
Segment Reporting Information [Line Items]
Segment revenues	1,454	1,185
Reportable segments | Intersegment net revenues
Segment Reporting Information [Line Items]
Segment revenues	15	5
Reportable segments | Activision
Segment Reporting Information [Line Items]
Segment revenues	519	317
Operating income	184	73
Net effect from recognition (deferral) of deferred net revenues	(261)	(446)
Net revenues	780	763
Reportable segments | Activision | Net revenues from external customers
Segment Reporting Information [Line Items]
Segment revenues	519	317
Reportable segments | Activision | Intersegment net revenues
Segment Reporting Information [Line Items]
Segment revenues	0	0
Reportable segments | Activision | Digital online channels
Segment Reporting Information [Line Items]
Segment revenues	455	249
Net effect from recognition (deferral) of deferred net revenues	(93)	(217)
Net revenues	548	466
Reportable segments | Activision | Retail channels
Segment Reporting Information [Line Items]
Segment revenues	44	68
Net effect from recognition (deferral) of deferred net revenues	(168)	(229)
Net revenues	212	297
Reportable segments | Activision | Other
Segment Reporting Information [Line Items]
Segment revenues	20	0
Net effect from recognition (deferral) of deferred net revenues	0	0
Net revenues	20	0
Reportable segments | Activision | Console
Segment Reporting Information [Line Items]
Segment revenues	344	249
Net effect from recognition (deferral) of deferred net revenues	(223)	(386)
Net revenues	567	635
Reportable segments | Activision | PC
Segment Reporting Information [Line Items]
Segment revenues	89	65
Net effect from recognition (deferral) of deferred net revenues	(37)	(59)
Net revenues	126	124
Reportable segments | Activision | Mobile and ancillary
Segment Reporting Information [Line Items]
Segment revenues	66	3
Net effect from recognition (deferral) of deferred net revenues	(1)	(1)
Net revenues	67	4
Reportable segments | Activision | Other
Segment Reporting Information [Line Items]
Segment revenues	20	0
Net effect from recognition (deferral) of deferred net revenues	0	0
Net revenues	20	0
Reportable segments | Activision | Americas
Segment Reporting Information [Line Items]
Segment revenues	326	191
Net effect from recognition (deferral) of deferred net revenues	(146)	(267)
Net revenues	472	458
Reportable segments | Activision | EMEA
Segment Reporting Information [Line Items]
Segment revenues	143	97
Net effect from recognition (deferral) of deferred net revenues	(96)	(146)
Net revenues	239	243
Reportable segments | Activision | Asia Pacific
Segment Reporting Information [Line Items]
Segment revenues	50	29
Net effect from recognition (deferral) of deferred net revenues	(19)	(33)
Net revenues	69	62
Reportable segments | Blizzard
Segment Reporting Information [Line Items]
Segment revenues	452	344
Operating income	197	55
Net effect from recognition (deferral) of deferred net revenues	3	(117)
Net revenues	449	461
Reportable segments | Blizzard | Net revenues from external customers
Segment Reporting Information [Line Items]
Segment revenues	437	339
Reportable segments | Blizzard | Intersegment net revenues
Segment Reporting Information [Line Items]
Segment revenues	15	5
Reportable segments | Blizzard | Digital online channels
Segment Reporting Information [Line Items]
Segment revenues	417	292
Net effect from recognition (deferral) of deferred net revenues	8	(114)
Net revenues	409	406
Reportable segments | Blizzard | Retail channels
Segment Reporting Information [Line Items]
Segment revenues	5	12
Net effect from recognition (deferral) of deferred net revenues	(4)	(4)
Net revenues	9	16
Reportable segments | Blizzard | Other
Segment Reporting Information [Line Items]
Segment revenues	30	40
Net effect from recognition (deferral) of deferred net revenues	(1)	1
Net revenues	31	39
Reportable segments | Blizzard | Console
Segment Reporting Information [Line Items]
Segment revenues	19	30
Net effect from recognition (deferral) of deferred net revenues	(8)	(12)
Net revenues	27	42
Reportable segments | Blizzard | PC
Segment Reporting Information [Line Items]
Segment revenues	381	252
Net effect from recognition (deferral) of deferred net revenues	19	(90)
Net revenues	362	342
Reportable segments | Blizzard | Mobile and ancillary
Segment Reporting Information [Line Items]
Segment revenues	22	22
Net effect from recognition (deferral) of deferred net revenues	(7)	(16)
Net revenues	29	38
Reportable segments | Blizzard | Other
Segment Reporting Information [Line Items]
Segment revenues	30	40
Net effect from recognition (deferral) of deferred net revenues	(1)	1
Net revenues	31	39
Reportable segments | Blizzard | Americas
Segment Reporting Information [Line Items]
Segment revenues	174	153
Net effect from recognition (deferral) of deferred net revenues	2	(54)
Net revenues	172	207
Reportable segments | Blizzard | EMEA
Segment Reporting Information [Line Items]
Segment revenues	124	101
Net effect from recognition (deferral) of deferred net revenues	3	(47)
Net revenues	121	148
Reportable segments | Blizzard | Asia Pacific
Segment Reporting Information [Line Items]
Segment revenues	154	90
Net effect from recognition (deferral) of deferred net revenues	(2)	(16)
Net revenues	156	106
Reportable segments | King
Segment Reporting Information [Line Items]
Segment revenues	498	529
Operating income	156	178
Net effect from recognition (deferral) of deferred net revenues	(1)	3
Net revenues	499	526
Reportable segments | King | Net revenues from external customers
Segment Reporting Information [Line Items]
Segment revenues	498	529
Reportable segments | King | Intersegment net revenues
Segment Reporting Information [Line Items]
Segment revenues	0	0
Reportable segments | King | Digital online channels
Segment Reporting Information [Line Items]
Segment revenues	498	529
Net effect from recognition (deferral) of deferred net revenues	(1)	3
Net revenues	499	526
Reportable segments | King | Retail channels
Segment Reporting Information [Line Items]
Segment revenues	0	0
Net effect from recognition (deferral) of deferred net revenues	0	0
Net revenues	0	0
Reportable segments | King | Other
Segment Reporting Information [Line Items]
Segment revenues	0	0
Net effect from recognition (deferral) of deferred net revenues	0	0
Net revenues	0	0
Reportable segments | King | Console
Segment Reporting Information [Line Items]
Segment revenues	0	0
Net effect from recognition (deferral) of deferred net revenues	0	0
Net revenues	0	0
Reportable segments | King | PC
Segment Reporting Information [Line Items]
Segment revenues	24	33
Net effect from recognition (deferral) of deferred net revenues	(1)	0
Net revenues	25	33
Reportable segments | King | Mobile and ancillary
Segment Reporting Information [Line Items]
Segment revenues	474	496
Net effect from recognition (deferral) of deferred net revenues	0	3
Net revenues	474	493
Reportable segments | King | Other
Segment Reporting Information [Line Items]
Segment revenues	0	0
Net effect from recognition (deferral) of deferred net revenues	0	0
Net revenues	0	0
Reportable segments | King | Americas
Segment Reporting Information [Line Items]
Segment revenues	312	329
Net effect from recognition (deferral) of deferred net revenues	1	3
Net revenues	311	326
Reportable segments | King | EMEA
Segment Reporting Information [Line Items]
Segment revenues	135	144
Net effect from recognition (deferral) of deferred net revenues	(1)	0
Net revenues	136	144
Reportable segments | King | Asia Pacific
Segment Reporting Information [Line Items]
Segment revenues	51	56
Net effect from recognition (deferral) of deferred net revenues	(1)	0
Net revenues	52	56
Non-reportable segments
Segment Reporting Information [Line Items]
Segment revenues	68	73
Net effect from recognition (deferral) of deferred net revenues	(7)	(7)
Net revenues	75	80
Non-reportable segments | Digital online channels
Segment Reporting Information [Line Items]
Segment revenues	0	0
Net effect from recognition (deferral) of deferred net revenues	0	0
Net revenues	0	0
Non-reportable segments | Retail channels
Segment Reporting Information [Line Items]
Segment revenues	0	0
Net effect from recognition (deferral) of deferred net revenues	0	0
Net revenues	0	0
Non-reportable segments | Other
Segment Reporting Information [Line Items]
Segment revenues	68	73
Net effect from recognition (deferral) of deferred net revenues	(7)	(7)
Net revenues	75	80
Non-reportable segments | Console
Segment Reporting Information [Line Items]
Segment revenues	0	0
Net effect from recognition (deferral) of deferred net revenues	0	0
Net revenues	0	0
Non-reportable segments | PC
Segment Reporting Information [Line Items]
Segment revenues	0	0
Net effect from recognition (deferral) of deferred net revenues	0	0
Net revenues	0	0
Non-reportable segments | Mobile and ancillary
Segment Reporting Information [Line Items]
Segment revenues	0	0
Net effect from recognition (deferral) of deferred net revenues	0	0
Net revenues	0	0
Non-reportable segments | Other
Segment Reporting Information [Line Items]
Segment revenues	68	73
Net effect from recognition (deferral) of deferred net revenues	(7)	(7)
Net revenues	75	80
Non-reportable segments | Americas
Segment Reporting Information [Line Items]
Segment revenues	0	0
Net effect from recognition (deferral) of deferred net revenues	0	0
Net revenues	0	0
Non-reportable segments | EMEA
Segment Reporting Information [Line Items]
Segment revenues	68	73
Net effect from recognition (deferral) of deferred net revenues	(7)	(7)
Net revenues	75	80
Non-reportable segments | Asia Pacific
Segment Reporting Information [Line Items]
Segment revenues	0	0
Net effect from recognition (deferral) of deferred net revenues	0	0
Net revenues	0	0
Elimination of intersegment revenues
Segment Reporting Information [Line Items]
Segment revenues	(15)	(5)
Net effect from recognition (deferral) of deferred net revenues	0	0
Net revenues	(15)	(5)
Elimination of intersegment revenues | Digital online channels
Segment Reporting Information [Line Items]
Segment revenues	(15)	(5)
Net effect from recognition (deferral) of deferred net revenues	0	0
Net revenues	(15)	(5)
Elimination of intersegment revenues | Retail channels
Segment Reporting Information [Line Items]
Segment revenues	0	0
Net effect from recognition (deferral) of deferred net revenues	0	0
Net revenues	0	0
Elimination of intersegment revenues | Other
Segment Reporting Information [Line Items]
Segment revenues	0	0
Net effect from recognition (deferral) of deferred net revenues	0	0
Net revenues	0	0
Elimination of intersegment revenues | Console
Segment Reporting Information [Line Items]
Segment revenues	0	0
Net effect from recognition (deferral) of deferred net revenues	0	0
Net revenues	0	0
Elimination of intersegment revenues | PC
Segment Reporting Information [Line Items]
Segment revenues	(15)	(5)
Net effect from recognition (deferral) of deferred net revenues	0	0
Net revenues	(15)	(5)
Elimination of intersegment revenues | Mobile and ancillary
Segment Reporting Information [Line Items]
Segment revenues	0	0
Net effect from recognition (deferral) of deferred net revenues	0	0
Net revenues	0	0
Elimination of intersegment revenues | Other
Segment Reporting Information [Line Items]
Segment revenues	0	0
Net effect from recognition (deferral) of deferred net revenues	0	0
Net revenues	0	0
Elimination of intersegment revenues | Americas
Segment Reporting Information [Line Items]
Segment revenues	(7)	(3)
Net effect from recognition (deferral) of deferred net revenues	0	0
Net revenues	(7)	(3)
Elimination of intersegment revenues | EMEA
Segment Reporting Information [Line Items]
Segment revenues	(5)	(1)
Net effect from recognition (deferral) of deferred net revenues	0	0
Net revenues	(5)	(1)
Elimination of intersegment revenues | Asia Pacific
Segment Reporting Information [Line Items]
Segment revenues	(3)	(1)
Net effect from recognition (deferral) of deferred net revenues	0	0
Net revenues	(3)	(1)
Reconciling items
Segment Reporting Information [Line Items]
Net effect from recognition (deferral) of deferred net revenues	266	567
Net effect from recognition (deferral) of deferred net revenues and related cost of revenues	171	441
Share-based compensation expense	(43)	(63)
Amortization of intangible assets	(33)	(54)
Restructuring costs	(23)	(57)
Reconciling items | Other segments
Segment Reporting Information [Line Items]
Operating income	$ 3	$ (3)