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Subsequent Events (Details) - USD ($)
$ / shares in Units, $ in Millions
1 Months Ended 3 Months Ended 9 Months Ended
Oct. 31, 2020
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Nov. 16, 2020
Subsequent events            
Dividends declared per common share (in dollars per share)   $ 0.275 $ 0.275 $ 0.825 $ 0.780  
Subsequent Event            
Subsequent events            
Dividends Payable, Amount Per Share           $ 0.275
Subsequent Event | CARES Act, Paycheck Protection Program Liquidity Facility            
Subsequent events            
Advances payoff in full $ 1,430