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Long-term Equity-based Compensation - Black-Scholes Pricing Model For Options (Details) - Stock Options
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Expected volatility rate, minimum 28.97% 27.31% 26.17%
Expected volatility rate, maximum 33.78% 32.15% 30.39%
Risk-free interest rate, minimum 1.35% 2.44% 1.59%
Risk-free interest rate, maximum 2.60% 3.00% 2.25%
Minimum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Expected dividend yield rate 1.05% 1.16% 1.39%
Maximum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Expected dividend yield rate 1.38% 1.72% 2.43%
Employee | Minimum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Weighted-average expected life (in years) 4 years 4 years 4 years
Employee | Maximum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Weighted-average expected life (in years) 6 years 6 years 6 years 6 months