Segment Information Net Revenue by Platform (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2015
Schedule of Net Revenue by Platform [Line Items]
Net revenue	$ 1,527	$ 1,149	$ 898	$ 1,271	$ 1,308	$ 1,070	$ 815	$ 1,203	$ 4,845	$ 4,396	$ 4,515
Total consoles, net revenue [Domain]
Schedule of Net Revenue by Platform [Line Items]
Net revenue									3,390	2,942	3,011
Xbox 360, PLAYSTATION 3, net revenue [Domain]
Schedule of Net Revenue by Platform [Line Items]
Net revenue									331	752	1,485
Other consoles, net revenue [Domain]
Schedule of Net Revenue by Platform [Line Items]
Net revenue									3	7	21
PC and Browsers, net revenue [Domain]
Schedule of Net Revenue by Platform [Line Items]
Net revenue									773	814	878
Mobile, net revenue [Domain]
Schedule of Net Revenue by Platform [Line Items]
Net revenue									627	548	504
Other, net revenue [Domain]
Schedule of Net Revenue by Platform [Line Items]
Net revenue									55	92	122
Xbox One, PLAYSTATION 4, net revenue [Domain]
Schedule of Net Revenue by Platform [Line Items]
Net revenue									$ 3,056	$ 2,183	$ 1,505