STOCK-BASED COMPENSATION - Compensation Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Stock-based compensation expense
Stock-based compensation expense before income taxes	$ 182,969	$ 110,472	$ 257,881
Income tax provision/(benefit)	(35,435)	(21,746)	(48,687)
Stock-based compensation expense, net of income tax benefit	147,534	88,726	209,194
Capitalized stock-based compensation expense	82,106	30,124	24,451
Cost of goods sold
Stock-based compensation expense
Stock-based compensation expense before income taxes	48,381	8,707	154,031
Selling and marketing
Stock-based compensation expense
Stock-based compensation expense before income taxes	30,027	18,348	18,680
General and administrative
Stock-based compensation expense
Stock-based compensation expense before income taxes	66,443	56,830	53,607
Research and development
Stock-based compensation expense
Stock-based compensation expense before income taxes	$ 38,118	$ 26,587	$ 31,563