Segment Information Net Revenue by Platform (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2014
Schedule of Net Revenue by Platform [Line Items]
Net revenue	$ 1,308	$ 1,070	$ 815	$ 1,203	$ 1,185	$ 1,126	$ 990	$ 1,214	$ 4,396	$ 4,515	$ 3,575
Total consoles, net revenue [Domain]
Schedule of Net Revenue by Platform [Line Items]
Net revenue									2,942	3,011	2,005
Xbox 360, PLAYSTATION 3, net revenue [Domain]
Schedule of Net Revenue by Platform [Line Items]
Net revenue									752	1,485	1,779
Other consoles, net revenue [Domain]
Schedule of Net Revenue by Platform [Line Items]
Net revenue									7	21	30
PC and Browsers, net revenue [Domain]
Schedule of Net Revenue by Platform [Line Items]
Net revenue									814	878	1,020
Mobile, net revenue [Domain]
Schedule of Net Revenue by Platform [Line Items]
Net revenue									548	504	400
Other, net revenue [Domain]
Schedule of Net Revenue by Platform [Line Items]
Net revenue									92	122	150
Xbox One, PLAYSTATION 4, net revenue [Domain]
Schedule of Net Revenue by Platform [Line Items]
Net revenue									$ 2,183	$ 1,505	$ 196