Employee and Retiree Benefit Plans - Components of Net Periodic Benefit Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 7,875	$ 8,199	$ 7,967
Interest cost	22,747	14,784	21,127
Expected return on plan assets	(36,458)	(19,222)	(24,316)
Amortization of prior service cost (credit)	(684)	591	640
Amortization of transitional (asset) liability	231	0	0
Recognized actuarial (gain) loss	15,867	20,565	22,828
Net periodic benefit expense	9,578	24,917	28,246
Termination benefits expense	0	0	8,434
Curtailment expense	0	0	586
Total net periodic benefit expense	9,578	24,917	37,266
Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	968	1,295	1,373
Interest cost	2,211	2,071	2,626
Expected return on plan assets	0	0	0
Amortization of prior service cost (credit)	(532)	0	0
Amortization of transitional (asset) liability	(587)	0	0
Recognized actuarial (gain) loss	(28)	(29)	(31)
Net periodic benefit expense	2,032	3,337	3,968
Termination benefits expense	0	0	0
Curtailment expense	0	0	(1,825)
Total net periodic benefit expense	$ 2,032	$ 3,337	$ 2,143