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Significant Accounting Policies (Schedule Of Employee Stock Options On Estimated Weighted Average Assumptions) (Details)
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Accounting Policies [Abstract]      
Dividend yield 2.56% 2.45% 2.23%
Expected volatility 34.29% 36.07% 31.59%
Risk-free interest rate 0.87% 0.83% 2.01%
Expected life 4 years 4 years 4 years
Forfeiture rate 0.56% 0.56% 0.56%
Suboptimal factor 1.75 1.75 1.75