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CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (Parenthetical)
3 Months Ended 9 Months Ended
Sep. 30, 2021
$ / shares
Mar. 31, 2021
Dividend
Sep. 30, 2020
$ / shares
[1]
Mar. 31, 2020
Dividend
Sep. 30, 2021
$ / shares
[1]
Sep. 30, 2020
$ / shares
[1]
Statement of Stockholders' Equity [Abstract]            
Dividends declared per common share (in dollars per share) | $ / shares $ 0.45   $ 0.44   $ 1.79 $ 1.75
Number of dividends declared per quarter | Dividend   2   2    
[1] Two dividends were declared in each of the first quarters of 2021 and 2020.