Share-Based Compensation (Weighted-Average Assumptions Of Employee Stock Options) (Details) (Employee Stock Option [Member], USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Volatility	42.80%	46.90%	52.10%
Risk-free interest rate	1.40%	0.80%	1.20%
Expected term	5 years 2 months	5 years	4 years 9 months 18 days
Weighted-average fair value per option	$ 2.93	$ 3.01	$ 3.88