Postretirement Benefits - Schedule of Net Periodic Benefit Cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Retirement Benefits [Abstract]
Service cost—benefits earned during the period	$ 24,969	$ 24,898	$ 21,568
Interest cost on projected benefit obligation	36,081	33,123	31,367
Expected return on assets	(46,278)	(42,580)	(38,625)
Amortization of prior service cost (credit)	$ 1,167	$ 1,071	$ 1,075
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
Recognition of actuarial gain (loss)	$ 45	$ (54)	$ (160)
Net periodic benefit cost	$ 15,984	$ 16,458	$ 15,225