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PENSION AND OTHER POSTRETIREMENT BENEFITS (Narrative) (Details)
12 Months Ended
Dec. 29, 2019
USD ($)
plan
Dec. 30, 2018
USD ($)
Dec. 31, 2017
USD ($)
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]      
Retirement plan expenses $ 19,000,000.0 $ 12,100,000 $ 10,800,000
Accumulated benefit obligation, defined benefit pension plans $ 369,100,000 157,600,000  
Weighted average duration of defined benefit obligation 28 years 3 months 21 days    
Actuarial loss expected to be recognized in net pension cost throughout 2019 $ 1,600,000    
Expenses related to defined contribution plans $ 13,700,000 $ 11,400,000 $ 9,500,000
Domestic Plan      
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]      
Defined contribution plans, number of plans | plan 2    
Matching contribution, percent of employees' salary 30.00%    
Maximum annual contribution per employee, amount $ 245,000    
Domestic Plan | Minimum      
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]      
Maximum annual contribution per employee, percent 2.00%    
Domestic Plan | Maximum      
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]      
Maximum annual contribution per employee, percent 6.00%    
Mexico      
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]      
Defined contribution plans, number of plans | plan 3    
U.K. and Europe      
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]      
Defined contribution plans, number of plans | plan 2    
Pension Benefits      
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]      
Number of plans | plan 1    
Expected contributions during 2020 $ 15,000,000.0    
Other Benefits      
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]      
Impact of 0.25% change in discount rate on projected benefit obligation (less than) 1,000    
Expected contributions during 2020 $ 200,000    
Salaried Employee | U.K. and Europe      
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]      
Maximum annual contribution per employee, percent 3.00%    
Salaried Employee | 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 | 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 | U.K. and Europe      
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]      
Matching contribution, percent of employees' salary 1.00%    
Maximum annual contribution per employee, percent 1.00%    
Union plan | Pension Benefits | Fixed income funds      
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]      
Target plan asset allocations 50.00%    
Union plan | Pension Benefits | Equity securities      
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]      
Target plan asset allocations 50.00%    
GK Pension Plan | Pension Benefits | Fixed income funds      
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]      
Target plan asset allocations 35.00%    
GK Pension Plan | Pension Benefits | Equity securities      
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]      
Target plan asset allocations 60.00%    
GK Pension Plan | Pension Benefits | Real estate      
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]      
Target plan asset allocations 5.00%    
U.K. Plans | Pension Benefits | Fixed income funds      
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]      
Target plan asset allocations 28.00%    
U.K. Plans | Pension Benefits | Equity securities      
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]      
Target plan asset allocations 62.00%    
U.K. Plans | Pension Benefits | Real estate      
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]      
Target plan asset allocations 10.00%    
Qualified Plan | Pension Benefits      
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]      
Number of plans | plan 4    
Nonqualified Plan | Pension Benefits      
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]      
Number of plans | plan 2