v3.25.4
Pensions and other benefit plans - Company' Retirement Plan Asset Allocation and Target Allocations (Details)
Dec. 28, 2025
Dec. 29, 2024
Defined Benefit Plan Disclosure [Line Items]    
Percent of Plan Assets 100.00% 100.00%
Target Allocation 100.00%  
Equity securities    
Defined Benefit Plan Disclosure [Line Items]    
Percent of Plan Assets 55.00% 55.00%
Target Allocation 54.00%  
Debt securities    
Defined Benefit Plan Disclosure [Line Items]    
Percent of Plan Assets 45.00% 45.00%
Target Allocation 46.00%