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Consolidated Statements of Stockholders' Equity (Parenthetical) - $ / shares | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Statement of Stockholders' Equity [Abstract] |  |  |
Cash dividends declared per common share (in dollars per share) | $ 3.21 | $ 2.63 | $ 2.12
Cash dividends paid per common share (in dollars per share) | $ 3.21 | $ 2.63 | $ 2.12

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