Operating Segments and Geographic Area (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Operating Segments
Number of operating segments	3								3
Segment Reporting Information [Line Items]
Consolidated net revenues	$ 1,768	$ 841	$ 1,075	$ 1,172	$ 1,407	$ 754	$ 1,146	$ 1,449	$ 4,856	$ 4,755	$ 4,447
Net effect from changes in the deferral of net revenues									(131)	266	(356)
Total platform
Segment Reporting Information [Line Items]
Consolidated net revenues									4,550	4,337	4,069
Online subscriptions
Segment Reporting Information [Line Items]
Consolidated net revenues									986	1,357	1,230
Console
Segment Reporting Information [Line Items]
Consolidated net revenues									2,186	2,439	2,330
Handheld
Segment Reporting Information [Line Items]
Consolidated net revenues									164	167	184
PC and other
Segment Reporting Information [Line Items]
Consolidated net revenues									1,214	374	325
Total geographic region
Segment Reporting Information [Line Items]
Total geographic area long-lived assets									141	163	169
North America
Segment Reporting Information [Line Items]
Consolidated net revenues									2,436	2,405	2,409
Total geographic area long-lived assets									90	105	113
Europe
Segment Reporting Information [Line Items]
Consolidated net revenues									1,968	1,990	1,743
Total geographic area long-lived assets									40	46	46
Asia Pacific
Segment Reporting Information [Line Items]
Consolidated net revenues									452	360	295
Total geographic area long-lived assets									11	12	10
Operating segments total
Segment Reporting Information [Line Items]
Consolidated net revenues									4,987	4,489	4,803
Activision
Segment Reporting Information [Line Items]
Consolidated net revenues									3,072	2,828	2,769
Blizzard
Segment Reporting Information [Line Items]
Consolidated net revenues									1,609	1,243	1,656
Distribution
Segment Reporting Information [Line Items]
Consolidated net revenues									$ 306	$ 418	$ 378