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Shareholders' Equity - Dividends (Details) - $ / shares
12 Months Ended
Feb. 24, 2021
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Class of Stock [Line Items]        
Dividends (in dollars per share)   $ 0.80 $ 0.72 $ 0.64
Dividends paid (in dollars per share)   $ 0.20    
Subsequent Event        
Class of Stock [Line Items]        
Dividends (in dollars per share) $ 0.22      
Percentage increase in common stock dividends 10.00%