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GOODWILL AND INTANGIBLE ASSETS - Narrative Finite Intangibles (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2017
Jan. 01, 2017
Dec. 25, 2015
Acquired Finite-Lived Intangible Assets [Line Items]      
Amortization of intangible assets $ 21.4 $ 25.1 $ 19.9