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Consolidated Statements of Equity (Unaudited) (Parenthetical) - $ / shares | 6 Months Ended
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Jun. 30, 2018 | Jun. 30, 2017
Statement of Stockholders' Equity [Abstract] |  |
Dividends declared per share (in dollars per share) | $ 1.165 | $ 1.06
Dividend equivalents declared per share (in dollars per share) | $ 1.165 | $ 1.06

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- Definition Dividend Equivalents Per Share, Cash, Declared + References No definition available. + Details
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- References No definition available. + Details
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