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Consolidated Statements Of Changes In Shareholders' Equity (Parenthetical) - $ / shares | 3 Months Ended
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Jul. 31, 2015 | Jan. 31, 2015 | Jul. 31, 2014 | Apr. 30, 2014 | Jan. 31, 2014 | Oct. 31, 2013
Statement of Stockholders' Equity [Abstract] |  |  |  |  |  |
Dividends, per share | $ .34 | $ .33 | $ 0.165 | $ 0.165 | $ 0.140 | $ 0.140

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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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 + Details
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