INCOME TAXES (Details) - USD ($)	3 Months Ended			9 Months Ended		12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Mar. 31, 2018
Income Tax Disclosure [Abstract]
Effective tax rate	15.90%		255.10%	20.10%	114.60%
Tax Cuts and Jobs Act of 2017, Incomplete Accounting, Transition Tax for Accumulated Foreign Earnings, Provisional Income Tax Expense (Benefit)						$ 79,700,000
Tax Cuts and Jobs Act of 2017, Incomplete Accounting, Payment Of Transition Tax for Accumulated Foreign Earnings		$ 7,000,000
Effective Income Tax Rate Reconciliation, Tax Cuts And Jobs Act of 2017, Transition Tax On Accumulated Foreign Earnings, Percent	$ 800,000
Tax Cuts And Jobs Act, Transition Tax For Accumulated Foreign Earnings, Liability	71,900,000			$ 71,900,000
Tax Cuts And Jobs Act, Incomplete Accounting, Transition Tax For Accumulated Foreign Earnings, Provisional Income Tax Expense						5,000,000
Tax Cuts And Jobs Act, Transition Tax For Accumulated Foreign Earnings, Income Tax Expense	$ 3,200,000
Effective Income Tax Rate Reconciliation, Change In Enacted Tax Rate, Increase (Decrease) In Global Tax Rate, Percent	(8.10%)			(2.80%)
Unrecognized tax benefits	$ 25,300,000			$ 25,300,000		12,600,000
Unrecognized Tax Benefits, Interest on Income Taxes Accrued	1,800,000			1,800,000		1,400,000
Accrued penalties	$ 0			$ 0		$ 0