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CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (Parenthetical) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Cash dividends (in dollars per share) $ 0.25 $ 1.00 $ 1.00
Common stock, par value (in dollars per share) $ 0.01 $ 0.01 $ 0.01