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INCOME TAXES (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Income Tax Contingency [Line Items]
Effective income tax	26.50%	35.20%	24.70%	34.20%
Estimated effect on income taxes payable from foreign earnings repatriated			$ 14.5
Tax Cuts and Jobs Act of 2017, provisional income tax benefit			8.5		$ 12.1
Tax Cuts and Jobs Act, transition tax, income tax expense			3.6
Unrecognized tax benefits and related interest and penalties, all of which would affect our effective tax rate if recognized	$ 37.7		37.7
Decrease in unrecognized tax benefits due to lapse of statute of limitations	$ 1.8		1.8
Accounting Standards Update 2016-09
Income Tax Contingency [Line Items]
Effective income tax rate reconciliation, share-based compensation, excess tax benefit amount			$ 9.3	$ 11.9

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