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CONSOLIDATED STATEMENT OF CHANGES IN EQUITY CONSOLIDATED STATEMENT OF CHANGES IN EQUITY (Parenthetical) - $ / shares
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Statement of Stockholders' Equity [Abstract]      
Dividends paid (in dollars per share) $ 3.53 $ 3.245 $ 2.72
Preferred stock dividends paid (in dollars per share) $ 55.00 $ 55.00 $ 38.35