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Condensed Consolidated Statements of Changes in Stockholders' Equity (unaudited) (Parenthetical) - $ / shares
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Statement of Stockholders' Equity [Abstract]        
Dividends declared (in usd per share) $ 0.5625 $ 0.5125 $ 1.6875 $ 1.5375