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INCOME TAXES - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2018 | Mar. 31, 2017 | Dec. 31, 2017
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |
Effective income tax rate | (20.40%) | (34.80%) |
Provisional income tax expense, Tax Cuts and Jobs Act of 2017 | $ 0.7 |  | $ 5.5
Excess tax benefit from share-based compensation | $ 2.8 | $ 2.7 |
Effective income tax rate reduction, excess tax benefits share-based compensation | (30.90%) | (57.70%) |
Income tax expense, to be paid within one year, Tax Cuts and Jobs Act of 2017 | $ 0.4 |  |
Tax benefit, re-measurement of net deferred tax liabilities, Tax Cuts and Jobs Act of 2017 |  |  | $ 43.4

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