Income Taxes (Reconciliation Of Effective Tax Rate, By Percentage) (Details)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Income Taxes [Abstract]
Tax at U.S. statutory rate	35.00%	35.00%	35.00%
Surtax exemption	(1.50%)	(0.30%)	(0.60%)
State income taxes, net of federal benefit	1.70%	1.90%	2.40%
Foreign income taxes, net of foreign tax credits	(0.20%)	4.70%	2.70%
Impairment of goodwill		2.50%
Other	(0.90%)	0.60%	(1.60%)
Effective tax rate	34.10%	44.40%	37.90%