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Cash Dividends (Details) - $ / shares |  |  | 3 Months Ended
--- | --- | --- | ---
Dec. 01, 2015 | Sep. 02, 2015 | Dec. 31, 2015 | Dec. 31, 2014
Cash Dividends |  |  |  |
Cash dividends declared, per share (in dollars per share) | $ 0.6875 | $ 0.6875 | $ 0.6875 | $ 0.6875
Cash dividend paid, per share (in dollars per share) | $ 0.6875 |  |  |

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