Employee Benefit Plans (Net Benefit Cost) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Retirement Benefits, Description [Abstract]
Service cost	$ 15,351	$ 14,279	$ 12,767
Interest cost	29,864	34,197	37,260
Expected return on assets	(78,430)	(65,689)	(62,590)
Amortization of prior service cost	0	0	(57)
Amortization of net actuarial loss	27,093	25,324	10,924
Total pension expense	(6,122)	8,111	(1,582)
Current year actuarial gain (loss)	(97,880)	(55,023)	20,049
Total change from defined benefit plans, net of tax	(124,973)	(80,347)	9,068
Total recognized in net periodic benefit cost and other comprehensive income	$ (131,095)	$ (72,236)	$ 7,486