Postretirement Benefits - Components of Net Periodic Pension Costs (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Retirement Benefits [Abstract]
Service cost—benefits earned during the period	$ 34,624	$ 31,672	$ 24,461
Interest cost on projected benefit obligation	24,445	21,957	22,825
Expected return on assets	(35,539)	(32,331)	(29,561)
Amortization of prior service cost (credit)	1,077	631	632
Recognition of actuarial gain (loss)	12,433	19,849	15,469
Net periodic benefit cost	$ 37,040	$ 41,778	$ 33,826
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Amortization of Prior Service Cost (Credit), Statement of Income or Comprehensive Income [Extensible Enumeration]	Amortization of pension costs	Amortization of pension costs	Amortization of pension costs