Pension and Postretirement Benefit Obligations - Summary of Components of Total Pension Expense (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 29, 2023	Jun. 30, 2023	Sep. 30, 2022	Sep. 29, 2023	Sep. 30, 2022
Defined Benefit Plan Disclosure [Line Items]
Pension plan settlement expense	$ 77,319	$ 39,800	$ 0	$ 117,096	$ 0
Total pension expense	78,330		3,472	123,448	10,417
Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	1,099		1,860	3,298	5,581
Interest cost	517		2,659	7,533	7,977
Expected return on plan assets	(609)		(2,036)	(6,437)	(6,107)
Recognized net actuarial loss	0		989	1,946	2,966
Amortization of prior service cost	4		0	12	0
Net periodic postretirement benefit cost	$ 1,011		$ 3,472	$ 6,352	$ 10,417