Segment Information (Net Revenue By Revenue Composition ) (Details) - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Segment Reporting, Revenue Reconciling Item
Net revenue	$ 1,459	$ 1,209
Full game, net revenue [Member]
Segment Reporting, Revenue Reconciling Item
Net revenue	359	262
Full game downloads, net revenue [Member]
Segment Reporting, Revenue Reconciling Item
Net revenue	223	133
Packaged goods, net revenue [Member]
Segment Reporting, Revenue Reconciling Item
Net revenue	136	129
Live services and other, net revenue [Member]
Segment Reporting, Revenue Reconciling Item
Net revenue	$ 1,100	$ 947