Segment Information (Net Revenue By Revenue Composition ) (Details) - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Segment Reporting, Revenue Reconciling Item
Net revenue	$ 1,209	$ 1,137
Total Digital, net revenue [Member]
Segment Reporting, Revenue Reconciling Item
Net revenue	1,049	957
Full game downloads, net revenue [Member]
Segment Reporting, Revenue Reconciling Item
Net revenue	132	116
Live services, net revenue [Member]
Segment Reporting, Revenue Reconciling Item
Net revenue	731	610
Mobile, net revenue [Member]
Segment Reporting, Revenue Reconciling Item
Net revenue	186	231
Total Packaged goods and other, net revenue [Member]
Segment Reporting, Revenue Reconciling Item
Net revenue	$ 160	$ 180