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Consolidated Statements of Equity (Unaudited) (Parenthetical) - $ / shares | 3 Months Ended | 6 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018 | Mar. 31, 2019 | Dec. 31, 2018 | Mar. 31, 2018 | Dec. 31, 2017
Statement of Stockholders' Equity [Abstract] |  |  |  |  |  |  |  |
Common stock, par value per share | $ 0.01 | $ 0.01 | $ 0.01 | $ 0.01 | $ 0.01 | $ 0.01 | $ 0.01 | $ 0.01
Dividends declared per common share (in dollars per share) | $ 0.36 | $ 0.36 | $ 0.72 | $ 0.72 |  |  |  |

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