Employee and Retiree Benefit Plans - Amounts Included in Accumulated Other Comprehensive Income Not Recognized in Net Periodic Benefit Expense (Details) $ in Thousands	Dec. 31, 2021 USD ($)
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Net actuarial gain (loss)	$ (280,462)
Prior service cost	(2,920)
Amounts included in accumulated other comprehensive loss which have not been recognized in net periodic benefit expense	(283,382)
Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Net actuarial gain (loss)	13,233
Prior service cost	5,002
Amounts included in accumulated other comprehensive loss which have not been recognized in net periodic benefit expense	$ 18,235