Segment Information (Net Revenue By Revenue Composition ) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Segment Reporting, Revenue Reconciling Item
Net revenue	$ 1,826	$ 1,151	$ 3,377	$ 2,610
Recognized at a point in time
Segment Reporting, Revenue Reconciling Item
Net revenue	770	337	1,175	779
Recognized over time
Segment Reporting, Revenue Reconciling Item
Net revenue	1,056	814	2,202	1,831
Full game, net revenue [Member]
Segment Reporting, Revenue Reconciling Item
Net revenue	617	282	939	641
Full game downloads, net revenue [Member]
Segment Reporting, Revenue Reconciling Item
Net revenue	337	163	570	386
Packaged goods, net revenue [Member]
Segment Reporting, Revenue Reconciling Item
Net revenue	280	119	369	255
Live services and other, net revenue [Member]
Segment Reporting, Revenue Reconciling Item
Net revenue	$ 1,209	$ 869	$ 2,438	$ 1,969