Share-Based Compensation Arrangements (Share Options Fair Value Assumptions) (Details) (Share Options [Member], USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Share Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term (years)	8 years	9 years	9 years
Expected dividend yield	3.77%	3.45%	3.33%
Weighted average expected volatility	42.85%	42.97%	41.90%
Weighted average risk-free interest rate	2.46%	1.53%	3.05%
Weighted average grant date fair value	$ 10.35	$ 7.46	$ 7.46