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EQUITY AND LONG-TERM INCENTIVE COMPENSATION - Long Term Incentive Compensation (Details) - Restricted stock shares, restricted stock units, and stock options - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2018
Apr. 01, 2017
Stock-based Compensation    
Compensation expense $ 3.9 $ 3.2
Related tax benefit $ 1.0 $ 1.2