REVENUE FROM CONTRACTS WITH CUSTOMERS (Disaggregated Revenue) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Revenue from External Customer [Line Items]
Total net revenue	$ 841,142	$ 857,841	$ 1,672,452	$ 1,398,300
Service and other
Revenue from External Customer [Line Items]
Total net revenue	551,576	421,747	1,083,626	846,132
Product
Revenue from External Customer [Line Items]
Total net revenue	289,566	436,094	588,826	552,168
Recurrent consumer spending
Revenue from External Customer [Line Items]
Total net revenue	495,724	318,468	697,323	764,974
Full game and other
Revenue from External Customer [Line Items]
Total net revenue	345,418	539,373	975,129	633,326
Console
Revenue from External Customer [Line Items]
Total net revenue	641,269	651,818	1,252,954	1,086,632
PC and other
Revenue from External Customer [Line Items]
Total net revenue	199,873	206,023	419,498	311,668
Digital online
Revenue from External Customer [Line Items]
Total net revenue	711,299	615,774	1,437,525	1,043,555
Physical retail and other
Revenue from External Customer [Line Items]
Total net revenue	$ 129,843	$ 242,067	$ 234,927	$ 354,745