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Compensation and Benefit Plans (Black-Scholes Option Pricing Model Assumptions) (Details) (Employee Stock Option)
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]      
Expected terms (in years) 6 years 2 months 12 days 6 years 10 months 24 days 7 years
Weighted-average expected dividend yield 2.80% 3.00% 3.40%
Weighted-average volatility 17.70% 18.30% 18.90%
Risk-free interest rate, maximum 2.10% 1.70% 3.10%
Risk-free interest rate, minimum 1.00% 1.10% 1.40%
Expected volatility, maximum 18.60% 18.30% 19.00%
Expected volatility, minimum 17.70% 17.40% 18.20%
Maximum
     
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]      
Expected dividend yield, maximum 3.10% 3.10% 3.50%
Minimum
     
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]      
Expected dividend yield, maximum 2.70% 2.80% 3.10%