Retirement Plans - Assumptions Used to Determine Year-End Pension and Postretirement Benefit Obligations (Details)	12 Months Ended
	Dec. 29, 2024	Dec. 31, 2023
Pension Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Weighted average discount rate	5.67%	5.23%
Postemployment Retirement Benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Weighted average discount rate	5.74%	5.20%
Health care cost trend rate assumed for next year	7.00%	6.75%
Rate to which the cost trend rate is assumed to decline (ultimate trend rate)	5.00%	5.00%