Retirement Benefits (Schedule Of Defined Benefit Plan Weighted Average Assumption Used In Calculating Net Periodic Benefit Cost) (Details) - Pension Benefits	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Expected return on plan assets	5.31%	4.56%
Discount rate	5.16%	2.28%
Rate of compensation increase	3.16%	2.16%