Segment Reporting (Summary Of Segment Detail) (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Apr. 30, 2017 |
Apr. 30, 2016 |
Apr. 30, 2017 |
Apr. 30, 2016 |
|
| Segment Reporting Information [Line Items] | ||||
| Net sales | $ 608.2 | $ 571.3 | $ 1,711.8 | $ 1,626.5 |
| Earnings Before Income Taxes | 84.3 | 72.1 | 230.3 | 174.9 |
| Operating Segments | Engine Products segment | ||||
| Segment Reporting Information [Line Items] | ||||
| Net sales | 405.6 | 357.3 | 1,121.4 | 1,024.8 |
| Earnings Before Income Taxes | 63.1 | 48.7 | 157.2 | 112.1 |
| Operating Segments | Industrial Products segment | ||||
| Segment Reporting Information [Line Items] | ||||
| Net sales | 202.6 | 214.0 | 590.4 | 601.7 |
| Earnings Before Income Taxes | 31.9 | 29.9 | 94.5 | 81.6 |
| Corporate, Non-Segment | Corporate and Unallocated | ||||
| Segment Reporting Information [Line Items] | ||||
| Earnings Before Income Taxes | $ (10.7) | $ (6.5) | $ (21.4) | $ (18.8) |