INCOME TAXES (Detail Textuals) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Operating Loss Carryforwards [Line Items]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	35.00%	35.00%	35.00%
Non-deductible Transactions Costs, Amount		$ 8.9
Salt Depletion Benefit, Amount		2.6
Return to Provision Adjustment	$ (4.8)	1.2
Income Tax Reconciliation Prior Year Income Taxes, Salt Depletion	14.9
Income Tax Reconciliation Prior Year Income Taxes, Non-deductible Acquisition Costs	9.7
Effective Income Tax Rate Reconciliation, Tax Contingency, Amount	4.1
Benefit from expiration of statute of limitation		0.7
Increases in Valuation Allowances on State Tax Credit Balances		(0.8)
Remeasurement of Deferred Taxes	3.2	0.6
Deferred Tax Assets, Operating Loss Carryforwards	105.3	40.1
Deferred state tax benefits relating to net operating losses	13.2
State tax credit carryforward	12.9
Capital loss carry-forward	7.3
Deferred Tax Assets, Capital Loss Carryforwards	2.8	4.7
Unrecognized tax benefits [Abstract]
Unrecognized Tax Benefits	38.4	35.1	$ 36.1
Impact on the effective tax rate, if recognized	36.7	33.5
Expense recorded due to changes in tax contingencies from discontinued operations			2.2
Interest and penalties accrued	3.0	3.4
Interest and penalties (benefit) expense	(0.4)	$ 0.2	$ 0.4
Reasonable possibility that unrecognized tax benefits will decrease over next twelve months	12.3
United States
Operating Loss Carryforwards [Line Items]
Net operating loss carry-forward (NOL)	198.0
Deferred Tax Assets, Operating Loss Carryforwards	69.3
Operating loss carryforward limitation on use	2.5
Operating loss carryforward annual limitation on use	0.5
Foreign
Operating Loss Carryforwards [Line Items]
Net operating loss carry-forward (NOL)	89.0
Deferred Tax Assets, Operating Loss Carryforwards	22.8
Operating Loss Carryforwards Subject to Expiration	21.6
Deferred Tax Assets, Operating Loss Carryforwards, Subject to Expiration	5.4
Operating Loss Carryforwards Not Subject to Expiration	67.4
Deferred Tax Assets, Operating Loss Carryforwards, Not Subject to Expiration	$ 17.4