Revenue (Disaggregation of Revenue by Segment) (Details) - USD ($)
$ in Millions |
3 Months Ended |
9 Months Ended |
Apr. 30, 2019 |
Apr. 30, 2018 |
Apr. 30, 2019 |
Apr. 30, 2018 |
| Disaggregation of Revenue [Line Items] |
|
|
|
|
| Total net sales |
$ 712.8
|
$ 700.0
|
$ 2,117.9
|
$ 2,009.5
|
| Engine Products segment |
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
| Total net sales |
489.4
|
472.3
|
1,439.3
|
1,356.8
|
| Engine Products segment | Off-Road |
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
| Total net sales |
84.8
|
89.9
|
240.0
|
243.8
|
| Engine Products segment | On-Road |
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
| Total net sales |
46.9
|
42.2
|
135.6
|
110.7
|
| Engine Products segment | Aftermarket |
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
| Total net sales |
327.7
|
315.1
|
980.0
|
927.7
|
| Engine Products segment | Aerospace and Defense |
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
| Total net sales |
30.0
|
25.1
|
83.7
|
74.6
|
| Industrial Products segment |
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
| Total net sales |
223.4
|
227.7
|
678.6
|
652.7
|
| Industrial Products segment | Industrial Filtration Solutions |
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
| Total net sales |
155.2
|
152.2
|
469.2
|
431.8
|
| Industrial Products segment | Gas Turbine Systems |
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
| Total net sales |
27.5
|
32.1
|
80.5
|
91.4
|
| Industrial Products segment | Special Applications |
|
|
|
|
| Disaggregation of Revenue [Line Items] |
|
|
|
|
| Total net sales |
$ 40.7
|
$ 43.4
|
$ 128.9
|
$ 129.5
|