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Earnings Per Share (Details) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2018 $ / shares | Sep. 30, 2017 $ / shares | Sep. 30, 2018 Quarter $ / shares | Sep. 30, 2017 Quarter $ / shares | Sep. 30, 2016 $ / shares
Earnings Per Share [Abstract] |  |  |  |  |
Cash dividends common, per share | $ / shares | $ 0.26 | $ 0.25 | $ 1.04 | $ 1.00 | $ 1.16
Number of quarterly dividends declared | Quarter |  |  | 4 | 4 |

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- Definition Aggregate dividends declared during the period for each share of common stock outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
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- References No definition available. + Details
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