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INCOME TAXES (Narrative) (Details) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2018 USD ($)	Jun. 30, 2018 USD ($)
Income Tax Disclosure [Abstract]
Unrecognized tax benefits	$ 36.1	$ 36.1
Unrecognized tax benefits, excluding interest and penalties, that are expected to be settled within the next 12 months	5.8	5.8
Accrued income-tax related interest and penalties	3.4	3.4
Accrued income tax penalties	1.0	1.0
Income-tax related interest expense	$ 0.3	$ 0.5

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The amount of the unrecognized tax benefit of a position taken for which it is reasonably possible that the total amount thereof will significantly increase or decrease within twelve months of the balance sheet date.

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Amount of unrecognized tax benefits.

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Amount of statutory penalties accrued for a tax position claimed or expected to be claimed by the entity, in its tax return.

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Amount of interest expense accrued for an underpayment of income taxes.

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