Pension and Other Postretirement Benefits (Weighted Average Discount Rates used to Calculate the Benefit Obligations (Details) - Other Postretirement Benefits	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plan Disclosure [Line Items]
Benefit obligations	3.40%	2.80%	3.50%
Service cost	5.90%	4.10%	4.80%
Interest cost	3.60%	3.30%	4.20%