Employee Benefit Plans (Defined Benefit Plan, Assumptions, PRB) (Details) - Other Postretirement Benefits Plan [Member]	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plan Disclosure [Line Items]
Discount rate, benefit obligation	2.80%	2.40%
Discount rate, net cost	2.40%	3.10%	4.00%
Expected return on plan assets, net cost	5.70%	5.70%	7.00%
Health care cost trend rate assumed for next year	4.70%	5.00%
Rate that the cost trend rate gradually declines to	4.20%	4.30%
Year that the rate reaches the rate it is assumed to remain at	2026	2026