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PENSION AND OTHER POSTRETIREMENT BENEFITS - Narrative (Details)
$ in Millions
12 Months Ended
Dec. 26, 2021
USD ($)
plan
Dec. 27, 2020
USD ($)
Dec. 29, 2019
USD ($)
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]      
Retirement plan expenses | $ $ 19.2 $ 17.4 $ 19.0
Weighted average duration of defined benefit obligation 18 years 1 month 6 days    
Expenses related to defined contribution plans | $ $ 17.0 14.1 $ 13.7
U.S.      
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]      
Defined contribution plans, number of plans 2    
Mexico      
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]      
Defined contribution plans, number of plans 3    
U.K. and Europe      
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]      
Defined contribution plans, number of plans 2    
Pension Benefits      
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]      
Accumulated benefit obligation, defined benefit pension plans | $ $ 373.1 $ 404.2  
Expected contributions during 2022 | $ $ 6.2    
Pension Benefits | Qualified Plan      
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]      
Number of plans 4    
Pension Benefits | Nonqualified Plan      
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]      
Number of plans 2    
Other Benefits      
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]      
Number of plans 1    
Change in discount rate on projected benefit obligations, percentage 0.25%    
Expected contributions during 2022 | $ $ 0.2    
Union plan | Pension Benefits | Fixed income funds      
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 36.00%    
U.K. Plans | Pension Benefits | Real estate      
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]      
Target plan asset allocations 10.00%    
U.K. Plans | Pension Benefits | Fixed income securities      
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]      
Target plan asset allocations 11.00%    
U.K. Plans | Pension Benefits | Cash and cash equivalents      
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]      
Target plan asset allocations 15.00%