Employee Benefits - Weighted-Average Rates to Determine Net Postretirement Benefit Cost (Details)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plan Disclosure [Line Items]
Discount rate	2.05%	2.89%	4.00%
Expected return on plan assets	2.75%	3.75%	4.50%
Other Postretirement Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Discount rate	4.50%	4.50%	4.50%
Expected return on plan assets	4.50%	4.50%	4.50%