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CONSOLIDATED STATEMENTS OF EQUITY (Parenthetical) - $ / shares | 1 Months Ended | 12 Months Ended
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Feb. 28, 2017 | Jul. 31, 2016 | Feb. 28, 2015 | Feb. 28, 2014 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
CONSOLIDATED STATEMENTS OF EQUITY |  |  |  |  |  |  |
Cash dividends per share (in dollars per share) | $ 0.45 | $ 0.425 | $ 0.40 | $ 0.35 | $ 1.65 | $ 1.60 | $ 1.40

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