Operating Segments and Geographic Region (Details) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2017 USD ($)	Sep. 30, 2017 USD ($)	Jun. 30, 2017 USD ($)	Mar. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Sep. 30, 2016 USD ($)	Jun. 30, 2016 USD ($)	Mar. 31, 2016 USD ($)	Dec. 31, 2017 USD ($) segment	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)
Segment Reporting [Abstract]
Number of reportable segments | segment									3
Segment Reporting Information [Line Items]
Net revenues	$ 2,043	$ 1,618	$ 1,631	$ 1,726	$ 2,014	$ 1,568	$ 1,570	$ 1,455	$ 7,017	$ 6,608	$ 4,664
Operating income and income before income tax expense	221	$ 257	$ 339	$ 493	425	$ 294	$ 232	$ 461	1,309	1,412	1,319
Share-based compensation expense									(178)	(159)	(92)
Amortization of intangible assets									(759)	(708)	(13)
Interest and other expense (income), net									146	214	198
Loss on extinguishment of debt									12	92	0
Income before income tax expense									1,151	1,106	1,121
Long-lived assets	294				258				294	258	189
Digital online channels
Segment Reporting Information [Line Items]
Net revenues									5,479	4,865	2,502
Retail channels
Segment Reporting Information [Line Items]
Net revenues									1,033	1,386	1,806
Other
Segment Reporting Information [Line Items]
Net revenues									505	357	356
Console
Segment Reporting Information [Line Items]
Net revenues									2,389	2,453	2,391
PC
Segment Reporting Information [Line Items]
Net revenues									2,042	2,124	1,499
Mobile and ancillary
Segment Reporting Information [Line Items]
Net revenues									2,081	1,674	418
Other
Segment Reporting Information [Line Items]
Net revenues									505	357	356
Americas
Segment Reporting Information [Line Items]
Net revenues									3,607	3,423	2,409
Long-lived assets	197				154				197	154	138
EMEA
Segment Reporting Information [Line Items]
Net revenues									2,464	2,221	1,741
Long-lived assets	75				87				75	87	42
Asia Pacific
Segment Reporting Information [Line Items]
Net revenues									946	964	514
Long-lived assets	$ 22				$ 17				$ 22	$ 17	$ 9
Geographic Concentration Risk | Revenues | US
Segment Reporting Information [Line Items]
Percentage of concentration risk									45.00%	45.00%	48.00%
Geographic Concentration Risk | Revenues | UK
Segment Reporting Information [Line Items]
Percentage of concentration risk									12.00%	11.00%	14.00%
Operating segments, revenues from external customers
Segment Reporting Information [Line Items]
Net revenues									$ 6,746	$ 6,245	$ 4,265
Operating segments, revenues from external customers | Activision
Segment Reporting Information [Line Items]
Net revenues									2,628	2,220	2,700
Operating segments, revenues from external customers | Blizzard
Segment Reporting Information [Line Items]
Net revenues									2,120	2,439	1,565
Operating segments, revenues from external customers | King
Segment Reporting Information [Line Items]
Net revenues									1,998	1,586	0
Intersegment net revenues
Segment Reporting Information [Line Items]
Net revenues									19	0	0
Intersegment net revenues | Activision
Segment Reporting Information [Line Items]
Net revenues									0	0	0
Intersegment net revenues | Blizzard
Segment Reporting Information [Line Items]
Net revenues									19	0	0
Intersegment net revenues | King
Segment Reporting Information [Line Items]
Net revenues									0	0	0
Reportable segments
Segment Reporting Information [Line Items]
Net revenues									6,765	6,245	4,265
Operating income and income before income tax expense									2,417	2,320	1,429
Reportable segments | Activision
Segment Reporting Information [Line Items]
Net revenues									2,628	2,220	2,700
Operating income and income before income tax expense									1,005	788	868
Reportable segments | Blizzard
Segment Reporting Information [Line Items]
Net revenues									2,139	2,439	1,565
Operating income and income before income tax expense									712	995	561
Reportable segments | King
Segment Reporting Information [Line Items]
Net revenues									1,998	1,586	0
Operating income and income before income tax expense									700	537	0
Reconciliation items
Segment Reporting Information [Line Items]
Net effect from changes in the deferral of net revenues and related cost of revenues, Net revenues									(139)	9	43
Net effect from changes in the deferral of net revenues and related cost of sales, Operating income and income before income tax expense									(71)	(10)	(39)
Share-based compensation expense									(178)	(159)	(92)
Amortization of intangible assets									(757)	(706)	(11)
Fees and other expenses related to the King Acquisition									(15)	(47)	(5)
Restructuring costs									(15)	0	0
Other non-cash charges									(14)	0	0
Discrete tax-related items									(39)	0	0
Reconciliation items | Other segments
Segment Reporting Information [Line Items]
Net revenues									410	354	356
Operating income and income before income tax expense									(19)	14	37
Elimination of intersegment revenues | Blizzard
Segment Reporting Information [Line Items]
Net revenues									$ 19	$ 0	$ 0