Segment Reporting (Summary Of Segment Detail) (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Apr. 30, 2019 |
Apr. 30, 2018 |
Apr. 30, 2019 |
Apr. 30, 2018 |
|
| Segment Reporting Information [Line Items] | ||||
| Net sales | $ 712.8 | $ 700.0 | $ 2,117.9 | $ 2,009.5 |
| Earnings before income taxes | 99.5 | 99.0 | 276.4 | 260.1 |
| Engine Products segment | ||||
| Segment Reporting Information [Line Items] | ||||
| Net sales | 489.4 | 472.3 | 1,439.3 | 1,356.8 |
| Industrial Products segment | ||||
| Segment Reporting Information [Line Items] | ||||
| Net sales | 223.4 | 227.7 | 678.6 | 652.7 |
| Operating Segments | Engine Products segment | ||||
| Segment Reporting Information [Line Items] | ||||
| Earnings before income taxes | 71.5 | 67.3 | 188.6 | 183.9 |
| Operating Segments | Industrial Products segment | ||||
| Segment Reporting Information [Line Items] | ||||
| Earnings before income taxes | 32.7 | 34.4 | 101.5 | 95.7 |
| Corporate and Unallocated | ||||
| Segment Reporting Information [Line Items] | ||||
| Earnings before income taxes | $ (4.7) | $ (2.7) | $ (13.7) | $ (19.5) |