INCOME TAXES (Details) - USD ($)	3 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Mar. 31, 2019
Income Tax Disclosure [Abstract]
Effective tax rate	14.40%	5.50%
Effective Income Tax Rate Reconciliation, Disposition of Asset, Amount	$ 11,600,000
Effective Income Tax Rate Reconciliation, Disposition of Asset, Percent	22.20%
Income Tax Effects Allocated Directly to Equity, Employee Stock Options	$ 8,600,000
Effective Income Tax Rate Reconciliation, Tax Expense (Benefit), Share-based Payment Arrangement, Percent	16.50%
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-based Payment Arrangement, Amount	$ 2,500,000	$ (2,800,000)
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-based Payment Arrangement, Percent	470.00%	1800.00%
Unrecognized tax benefits	$ 36,900,000	$ 12,800,000
Accrued penalties			$ 0
Unrecognized Tax Benefits, Increase Resulting From Cost Sharing Of Prior Stock-Based Compensation	$ 9,200,000