REVENUE FROM CONTRACTS WITH CUSTOMERS - Disaggregated Revenue (Details) - USD ($) $ in Millions	12 Months Ended
Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2023
Revenue from External Customer [Line Items]
Total net revenue	$ 5,633.6	$ 5,349.6	$ 5,349.9
Recurrent consumer spending
Revenue from External Customer [Line Items]
Total net revenue	4,474.6	4,213.5	4,180.4
Full game and other
Revenue from External Customer [Line Items]
Total net revenue	1,159.0	1,136.1	1,169.5
Mobile
Revenue from External Customer [Line Items]
Total net revenue	2,942.0	2,748.0	2,538.6
Console
Revenue from External Customer [Line Items]
Total net revenue	2,099.1	2,167.3	2,303.8
PC and other
Revenue from External Customer [Line Items]
Total net revenue	592.5	434.3	507.5
Digital online
Revenue from External Customer [Line Items]
Total net revenue	5,431.8	5,112.2	5,085.7
Physical retail and other
Revenue from External Customer [Line Items]
Total net revenue	201.8	237.4	264.2
Over time
Revenue from External Customer [Line Items]
Total net revenue	4,504.8	4,312.2	4,208.0
Point in time
Revenue from External Customer [Line Items]
Total net revenue	$ 1,128.8	$ 1,037.4	$ 1,141.9

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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