TAXES (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Mar. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Effective income tax rate		57.50%	12.00%	(2.70%)	10.20%
Impact on effective income tax rate due to unrecognized tax benefits in foreign jurisdictions		$ 4.7		$ 4.7
Net Tax Benefit, Tax Cuts And Jobs Act		14.1		14.1
Valuation allowance, deferred tax asset, increase (decrease), amount		2.1	$ 3.7	13.4	$ 19.3
Unrecognized Tax Benefits		$ 6.2		6.2
Gross Tax Benefit, Tax Cuts And Jobs Act				75.6
Expense From Repatriation Of Foreign Earnings, Tax Cuts And Jobs Act				$ 61.5
Subsequent Event [Line Items]
Federal Statutory Income Tax Rate, Percent				35.00%
Subsequent Event
Subsequent Event [Line Items]
Federal Statutory Income Tax Rate, Percent	21.00%