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PROPERTY, PLANT AND EQUIPMENT (Narrative) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2020
Dec. 29, 2019
Dec. 30, 2018
Disclosure of detailed information about property, plant and equipment [line items]      
Useful life, property, plant and equipment     10 years
Reduction in depreciation property, plant and equipment   $ 8.5  
Contractual purchase obligations outstanding   0.0 $ 24.8
Forecast      
Disclosure of detailed information about property, plant and equipment [line items]      
Reduction in depreciation property, plant and equipment $ 17.0    
Manufacturing equipment      
Disclosure of detailed information about property, plant and equipment [line items]      
Reduction in depreciation property, plant and equipment   $ 1.0  
Minimum      
Disclosure of detailed information about property, plant and equipment [line items]      
Useful life, property, plant and equipment   15 years  
Maximum | Manufacturing equipment      
Disclosure of detailed information about property, plant and equipment [line items]      
Useful life, property, plant and equipment   20 years