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Acquisitions (Narrative) (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Apr. 30, 2016 | Apr. 30, 2015 | Apr. 30, 2016 | Apr. 30, 2015 | Aug. 31, 2015
Business Acquisition [Line Items] |  |  |  |  |
Net sales | $ 571.3 | $ 575.6 | $ 1,626.5 | $ 1,760.6 |
Engine Products |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Percentage of voting interest acquired |  |  |  |  | 100.00%
Net sales |  |  | $ 9.0 |  |

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- Definition Percentage of voting equity interests acquired at the acquisition date in the business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1392-128463 + Details
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