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PENSION AND OTHER POSTRETIREMENT BENEFITS (Narrative) (Details)
12 Months Ended
Dec. 30, 2018
USD ($)
plan
Dec. 31, 2017
USD ($)
Dec. 25, 2016
USD ($)
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]      
Retirement plan expenses $ 12,100,000 $ 10,800,000 $ 11,200,000
Accumulated benefit obligation, defined benefit pension plans $ 157,600,000 178,200,000  
Weighted average duration of defined benefit obligation 29 years 11 months 12 days    
Actuarial loss expected to be recognized in net pension cost throughout 2019 $ 1,300,000    
Expenses related to defined contribution plans $ 11,400,000 $ 9,500,000 $ 8,100,000
Fixed income funds | Pooled separate accounts      
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]      
Target plan asset allocations 50.00%    
Fixed income funds | Common collective trusts funds      
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]      
Target plan asset allocations 30.00%    
Equity securities | Pooled separate accounts      
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]      
Target plan asset allocations 50.00%    
Equity securities | Common collective trusts funds      
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]      
Target plan asset allocations 70.00%    
Pension Benefits      
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]      
Expected contributions during 2019 $ 8,300,000    
Pension Benefits | Qualified Plan      
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]      
Defined benefit plans, number of plans | plan 2    
Pension Benefits | Nonqualified Plan      
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]      
Defined benefit plans, number of plans | plan 2    
Postretirement Life Insurance Plan      
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]      
Defined benefit plans, number of plans | plan 1    
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 during 2019 $ 100,000    
Other Plans | Domestic Plan      
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]      
Defined contribution plans, number of plans | plan 2    
Maximum annual contribution per employee, percent 30.00%    
Maximum annual contribution per employee, amount $ 245,000    
Other Plans | Domestic Plan | Minimum      
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]      
Matching contribution, percent of employees' salary 2.00%    
Other Plans | Domestic Plan | Maximum      
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]      
Matching contribution, percent of employees' salary 6.00%    
Other Plans | Mexico      
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]      
Defined contribution plans, number of plans | plan 3    
Other Plans | U.K. and Europe      
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]      
Defined contribution plans, number of plans | plan 2    
Salaried Employee | Other Plans | U.K. and Europe      
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]      
Maximum annual contribution per employee, percent 3.00%    
Salaried Employee | Other Plans | U.K. and Europe | Minimum      
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]      
Matching contribution, percent of employees' salary 4.00%    
Salaried Employee | Other Plans | U.K. and Europe | Maximum      
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]      
Matching contribution, percent of employees' salary 5.50%    
Weekly Employee | Other Plans | U.K. and Europe      
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]      
Maximum annual contribution per employee, percent 1.00%    
Matching contribution, percent of employees' salary 1.00%