Segment Reporting (Summary Of Segment Detail) (Details) - USD ($) $ in Millions	3 Months Ended
Oct. 31, 2016	Oct. 31, 2015
Segment Reporting Information [Line Items]
Net sales	$ 553.0	$ 538.0
Earnings Before Income Taxes	79.7	53.4
Operating Segments \| Engine Products segment
Segment Reporting Information [Line Items]
Net sales	353.9	346.6
Earnings Before Income Taxes	45.4	36.0
Operating Segments \| Industrial Products segment
Segment Reporting Information [Line Items]
Net sales	199.1	191.4
Earnings Before Income Taxes	38.3	24.0
Corporate, Non-Segment \| Corporate and Unallocated
Segment Reporting Information [Line Items]
Earnings Before Income Taxes	$ (4.0)	$ (6.6)

Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(h)(1)(i))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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Aggregate revenue during the period from the sale of goods in the normal course of business, after deducting returns, allowances and discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1(a))
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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