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Stock-Based Compensation - Measurement Inputs (Details) - $ / shares
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Performance Shares      
Stock-Based Compensation Details [Line Items]      
Term (years) 3 years 3 years 3 years
Granted (dollars per share) $ 19.46 $ 27.36 $ 32.80
Equity Option      
Stock-Based Compensation Details [Line Items]      
Risk-free interest rate (percent)   2.63%  
Dividend yield (percent)   3.25%  
Historical volatility (percent)   27.25%  
Expected term (years)   6 years 1 month 17 days  
Weighted average fair value (dollars per share)   $ 5.71  
TSR | Performance Shares      
Stock-Based Compensation Details [Line Items]      
Term (years) 3 years 3 years  
Risk-free interest rate (percent) 2.51% 2.39%  
Dividend yield (percent) 3.97% 3.24%  
Historical volatility (percent) 32.95% 29.12%  
Granted (dollars per share) $ 16.27 $ 32.01  
TSR historical volatility look back period (years) 3 years