Employee Benefit Plans (Schedule Of Allocation Of Plan Assets) (Details)	Dec. 31, 2021	Dec. 31, 2020
Defined Benefit Plan Disclosure [Line Items]
Total	100.00%	100.00%
Equity securities
Defined Benefit Plan Disclosure [Line Items]
Total	60.00%	58.00%
Debt securities
Defined Benefit Plan Disclosure [Line Items]
Total	24.00%	24.00%
Stable value funds
Defined Benefit Plan Disclosure [Line Items]
Total	14.00%	14.00%
Other, including cash
Defined Benefit Plan Disclosure [Line Items]
Total	2.00%	4.00%