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RECENTLY ADOPTED AND ISSUED ACCOUNTING STANDARDS RECENTLY ADOPTED AND ISSUED ACCOUNTING STANDARDS - Additional Information (Details)
$ in Millions
12 Months Ended
Dec. 31, 2017
USD ($)
Recently Adopted and Issued Accounting Standards [Abstract]  
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense $ 1.6
Reclassification from AOCI, Current Period, Tax $ 4.9