Stock-Based Compensation (Schedule Of Weighted Average Value And Assumptions For Fair Value Of Options) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average fair value	$ 34.06	$ 23.39	$ 19.22
Risk-free interest rate	0.90%	1.00%	2.80%
Expected life in years	5 years	5 years	6 years
Expected volatility	44.50%	45.70%	41.90%
Expected dividend yield	0.60%	0.50%	0.50%