REVENUE FROM CONTRACTS WITH CUSTOMERS - Disaggregated Revenue (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Revenue from External Customer [Line Items]
Total net revenue	$ 1,393.5	$ 858.2	$ 2,495.9	$ 1,671.5
Recurrent consumer spending
Revenue from External Customer [Line Items]
Total net revenue	1,101.8	563.6	1,927.4	1,135.9
Full game and other
Revenue from External Customer [Line Items]
Total net revenue	291.7	294.6	568.5	535.6
Console
Revenue from External Customer [Line Items]
Total net revenue	551.9	596.1	1,159.1	1,198.5
Mobile
Revenue from External Customer [Line Items]
Total net revenue	730.1	115.1	1,099.7	197.4
PC and other
Revenue from External Customer [Line Items]
Total net revenue	111.5	147.0	237.1	275.6
Digital online
Revenue from External Customer [Line Items]
Total net revenue	1,319.2	779.1	2,357.0	1,519.9
Physical retail and other
Revenue from External Customer [Line Items]
Total net revenue	74.3	79.1	138.9	151.6
Over time
Revenue from External Customer [Line Items]
Total net revenue	1,116.4	537.5	1,923.9	1,109.8
Point in time
Revenue from External Customer [Line Items]
Total net revenue	$ 277.1	$ 320.7	$ 572.0	$ 561.7