Segment Information (Net Revenue By Revenue Composition ) (Details) - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Segment Reporting, Revenue Reconciling Item
Net revenue	$ 1,551	$ 1,459
Recognized at a point in time
Segment Reporting, Revenue Reconciling Item
Net revenue	405	442
Recognized over time
Segment Reporting, Revenue Reconciling Item
Net revenue	1,146	1,017
Full game, net revenue [Member]
Segment Reporting, Revenue Reconciling Item
Net revenue	322	359
Full game downloads, net revenue [Member]
Segment Reporting, Revenue Reconciling Item
Net revenue	233	223
Packaged goods, net revenue [Member]
Segment Reporting, Revenue Reconciling Item
Net revenue	89	136
Live services and other, net revenue [Member]
Segment Reporting, Revenue Reconciling Item
Net revenue	$ 1,229	$ 1,100