Pension and Postretirement Benefit Obligations - Summary of Components of Total Pension Expense (Details) - Pension Plans - USD ($) $ in Thousands	3 Months Ended
	Mar. 29, 2024	Mar. 31, 2023
Defined Benefit Plan Disclosure [Line Items]
Service cost		$ 1,099
Interest cost		3,508
Expected return on plan assets		(2,914)
Recognized net actuarial loss		973
Amortization of prior service cost		4
Net periodic postretirement benefit cost		$ 2,670
Bargaining Plan
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 1,091
Interest cost	589
Expected return on plan assets	(763)
Recognized net actuarial loss	0
Amortization of prior service cost	4
Net periodic postretirement benefit cost	$ 921