Income Taxes (Reconciliation Of Provision For Income Taxes) (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Income Taxes [Abstract]
Consolidated tax provision at federal statutory rate (in hundredths)	35.00%	35.00%	35.00%	35.00%
State income tax provisions, net of federal income tax benefit (in hundredths)	0.40%	1.90%	1.60%	1.10%
Tax reserve adjustment (in hundredths)	(0.10%)	(3.20%)	(0.50%)	(1.60%)
Changes in certain deferred tax balances (in hundredths)	23.20%		10.30%	(2.50%)
All other, net (in hundredths)	(0.70%)	(0.10%)	(0.10%)
Effective tax rate (in hundredths)	57.80%	33.60%	46.30%	32.00%