Employee Benefit Plans - Components of Net Periodic Benefit (Income) Cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Retirement Benefits [Abstract]
Service cost	$ 12,218	$ 12,105	$ 9,558
Interest cost	71,693	83,732	97,441
Expected return on plan assets	(153,822)	(154,111)	(154,137)
Amortization of prior service cost (credit)	690	692	(67)
Amortization of actuarial loss	49,897	39,613	31,000
Net periodic benefit income	$ (19,324)	$ (17,969)	$ (16,205)