Income Taxes (Reconciliation Of Provision For Income Taxes) (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Income Taxes [Abstract]
Consolidated tax provision at federal statutory rate	21.00%	21.00%	21.00%	21.00%
State income tax provisions, net of federal income tax benefit	(32.80%)	15.00%	57.20%	12.00%
Changes in certain deferred tax balances		1.70%		1.10%
Sec. 162(f) nondeductible penalties	(6.30%)
Tax reserve adjustment		0.30%	(3.80%)	0.40%
Tax Credit		(0.60%)	7.60%	(0.80%)
Sec. 162(m) - nondeductible Executive Compensation	(0.20%)	2.40%	(22.20%)	3.20%
All other, net	0.10%	0.80%	(0.50%)	0.50%
Effective tax rate	(18.20%)	40.60%	59.30%	37.40%