BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES - BALANCE SHEET IMPACT OF ASU 2014-09 (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Apr. 01, 2019	Mar. 31, 2019
Change in Accounting Estimate [Line Items]
Prepaid expenses and other	$ 273,503	$ 185,896	$ 186,688
Right-of-use assets	154,284	118,799	0
Accrued expenses and other current liabilities	1,169,884	1,032,719	1,035,695
Lease Liabilities	25,187	18,937	0
Non-current lease liabilities	152,059	122,041	0
Other long-term liabilities	$ 190,651	$ 209,638	229,633
Accounting Standards Update 2014-09
Change in Accounting Estimate [Line Items]
Prepaid expenses and other			(792)
Right-of-use assets			118,799
Accrued expenses and other current liabilities			(2,976)
Lease Liabilities			18,937
Non-current lease liabilities			122,041
Other long-term liabilities			$ (19,995)