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Condensed Consolidated Statements of Equity (Parenthetical) - $ / shares
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Retained Earnings        
Cash dividends declared (in dollars per share) $ 0.285 $ 0.26 $ 0.805 $ 0.7