Significant Accounting Policies (Schedule of Weighted-Average Assumptions of Fair Value Options Granted) (Details)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Risk-free interest rate	1.30%	1.30%	2.90%
Expected dividend yield	1.90%	1.50%	1.40%
Expected stock price volatility	27.90%	27.60%	26.90%
Expected option life	7 years 1 month	7 years 1 month	6 years 11 months