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QUARTERLY RESULTS OF OPERATIONS (UNAUDITED) Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 5 Months Ended 12 Months Ended
Mar. 29, 2015
Dec. 29, 2013
Sep. 26, 2013
Jan. 03, 2016
Dec. 28, 2014
Apr. 28, 2013
Gains (Losses) on Extinguishment of Debt $ 12.8 $ (1.7)   $ 12.8   $ (120.7)
WH Group | Merger Related Costs [Member]            
Merger related costs   23.9 $ 18.0      
Successor            
Gains (Losses) on Extinguishment of Debt   (1.7)   (12.1) $ 0.9  
Merger related costs   23.9   0.0 0.0  
Impact of inventory fair value step-up on cost of sales   $ 45.4   $ 0.0    
Successor | WH Group | Cost of Sales [Member]            
Impact of inventory fair value step-up on cost of sales         $ 0.0