Share-Based Compensation And Capital Stock Weighted Average Assumptions Of Black-Scholes Option-Pricing Model (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]
Risk-free interest rate	0.73%	0.78%	2.10%
Weighted average fair value of options granted (per option)	$ 9.89	$ 9.98	$ 12.42
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility	38.14%	40.15%	39.51%
Expected life of stock option	4 years 6 months	4 years 4 months 24 days	4 years 4 months 24 days
Dividend yield	2.01%	2.08%	1.79%
Requisite service period	4 years	4 years	4 years
Contractual life	7 years	7 years	7 years