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Subsequent Events - Additional Information (Details) - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Jan. 14, 2021
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Subsequent Event [Line Items]        
Cash dividends declared (in dollars per share)   $ 2.68 $ 2.40 $ 2.20
Subsequent Event        
Subsequent Event [Line Items]        
Cash dividends declared (in dollars per share) $ 0.72      
Cash dividends declared $ 11.6      
Dividend rate, percentage 7.50%      
Cash dividends, declared date Jan. 14, 2021      
Cash dividends, payable date Feb. 12, 2021      
Cash dividends, record date Jan. 25, 2021