Retirement Benefits - Schedule of Actuarial Assumptions Used for the Valuation (Details)	Dec. 28, 2025	Dec. 29, 2024
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Discount rate	5.90%	5.85%
Pension Benefits | Minimum
Defined Benefit Plan Disclosure [Line Items]
Rate of increase in future compensation levels	4.00%	3.00%
Pension Benefits | Maximum
Defined Benefit Plan Disclosure [Line Items]
Rate of increase in future compensation levels	10.00%	5.00%
Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Discount rate	5.30%	5.60%
Rate of increase in future compensation levels	0.00%	0.00%