Benefit Plans - Assumptions Used to Determine Pension Expense (Details)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Retirement Benefits [Abstract]
Discount rate - projected benefit obligation	2.50%	3.29%	4.30%
Discount rate - interest cost	1.88%	2.62%	3.99%
Expected long-term return on plan assets	6.75%	7.50%	7.50%