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Benefit Plans - Narrative (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 30, 2023
Dec. 31, 2022
Dec. 25, 2021
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Actuarial net loss $ (200)    
Payable maximum period to be considered current 12 months    
Ultimate health care cost trend rate 4.10%    
Minimum      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Annual assumed rate of increase in the per capita cost of covered benefits 4.90%    
Maximum      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Annual assumed rate of increase in the per capita cost of covered benefits 8.20%    
Pension Benefits      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Total plan assets (as a percent) 100.00% 100.00%  
Expected long-term rate of return on plan assets 4.30% 5.51%  
Pension Benefits | Equity securities (includes equity mutual funds)      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Total plan assets (as a percent) 0.00% 67.00%  
Pension Benefits | Alternative investments      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Total plan assets (as a percent) 0.00% 10.00%  
Other Benefits      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Curtailment gain $ 0 $ 1,756 $ 0