REVENUE FROM CONTRACTS WITH CUSTOMERS - Disaggregated Revenue (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Revenue from External Customer [Line Items]
Total net revenue	$ 5,349.9	$ 3,504.8	$ 3,372.8
Recurrent consumer spending
Revenue from External Customer [Line Items]
Total net revenue	4,180.4	2,271.2	2,152.0
Full game and other
Revenue from External Customer [Line Items]
Total net revenue	1,169.5	1,233.6	1,220.8
Mobile
Revenue from External Customer [Line Items]
Total net revenue	2,538.6	403.4	274.1
Console
Revenue from External Customer [Line Items]
Total net revenue	2,303.8	2,528.9	2,517.0
PC and other
Revenue from External Customer [Line Items]
Total net revenue	507.5	572.5	581.7
Digital online
Revenue from External Customer [Line Items]
Total net revenue	5,085.7	3,149.0	2,972.4
Physical retail and other
Revenue from External Customer [Line Items]
Total net revenue	264.2	355.8	400.4
Over time
Revenue from External Customer [Line Items]
Total net revenue	4,208.0	2,214.8	2,063.7
Point in time
Revenue from External Customer [Line Items]
Total net revenue	$ 1,141.9	$ 1,290.0	$ 1,309.1