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PENSION AND OTHER POSTRETIREMENT BENEFITS - Narrative (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 29, 2019
Sep. 30, 2018
Sep. 29, 2019
Sep. 30, 2018
Dec. 30, 2018
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]          
Retirement plan expenses $ 5,000,000.0 $ 3,000,000.0 $ 14,600,000 $ 9,100,000  
Accumulated benefit obligation, defined benefit pension plans 169,400,000   $ 169,400,000   $ 157,600,000
Weighted average duration of defined benefit obligation     29 years 8 months 15 days    
Expected contributions, remainder of 2019 (less than for other postretirement plans) 2,100,000   $ 2,100,000    
Actuarial loss expected to be recognized in net pension cost, remainder of 2018 $ 400,000   $ 400,000    
Fixed income securities | Pooled separate accounts          
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]          
Target plan asset allocations 50.00%   50.00%    
Fixed income securities | Common collective trusts funds          
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]          
Target plan asset allocations 30.00%   30.00%    
Equity securities | Pooled separate accounts          
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]          
Target plan asset allocations 50.00%   50.00%    
Equity securities | Common collective trusts funds          
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]          
Target plan asset allocations 70.00%   70.00%    
Maximum | Other Benefits          
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]          
Impact of 0.25% change in discount rate on projected benefit obligation     $ 1,000    
Expected contributions, remainder of 2019 (less than for other postretirement plans) $ 100,000   $ 100,000