Retirement Plans - Assumptions Used to Determine the Benefit Obligation (Details) - Pension Plans, Defined Benefit - Weighted average	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Net benefit obligation
Discount rate	2.80%	2.32%
Rate of increases in compensation level	3.30%	3.30%
Net periodic benefit cost
Discount rate	2.32%	1.86%	2.14%
Rate of increases in compensation level	3.28%	4.33%	4.39%
Expected long-term rate of return on assets	5.77%	3.76%	3.49%