Share-Based Compensation (Stock Option Pricing Model To Estimate The Fair Value Of Stock Option Awards) (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2012 Y	Jun. 30, 2011 Y	Jun. 30, 2012 Y	Jun. 30, 2011 Y
Share-based Compensation [Abstract]
Risk-free interest rate	0.80%	0.00%	0.80%	2.20%
Expected life (in years)	4.7	0.0	4.7	5.2
Expected volatility (in tenths)	42.80%	0.00%	43.90%	44.60%
Dividend	0.00%	0.00%	0.00%	0.00%