Income Taxes (Reconciliation Of Provision For Income Taxes) (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
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)	(1.50%)	3.00%	(4.10%)	2.90%
Noncontrolling interest (in hundredths)		(1.50%)		(1.30%)
Tax reserve adjustment (in hundredths)	(1.30%)	(5.60%)	(6.60%)	(3.20%)
Changes in certain deferred tax balances (in hundredths)	(11.50%)	2.00%	1.50%	1.10%
IRS audit adjustments (in hundredths)			7.30%
All other, net (in hundredths)	(1.40%)	0.40%	(0.60%)	0.30%
Effective tax rate (in hundredths)	19.30%	33.30%	32.50%	34.80%