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INCOME TAXES - Narrative (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Income Tax Disclosure [Abstract]      
Tax Cuts And Jobs Act Of 2017, incomplete accounting, provisional liability $ 7.9   $ 7.9
Tax Cuts And Jobs Act Of 2017, incomplete accounting, provisional income tax expense (benefit)   $ 5.2 7.9
Tax Cuts And Jobs Act Of 2017, incomplete accounting, provisional liability, deferred tax assets 2.7   $ 2.7
Tax Cuts And Jobs Act Of 2017, incomplete accounting, provisional income tax expense (benefit), discrete component $ 7.9