| In millions, except per share items | Sep-30-22 | Sep-30-21 | Sep-30-20 | Sep-30-19 | Sep-30-18 | Sep-30-17 | Sep-30-16 | Sep-30-15 |
| | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K/A | 10-K | 10-K |
| Revenues |
| Integrated Solutions and Services | 1,184.5 | 959.9 | 944.2 | 910.8 | 844.9 | 753.9 | | |
| Applied Product Technologies | 653.2 | 504.5 | 485.3 | 533.6 | 579.3 | 567.8 | | |
| Intersegment Eliminations | 138.3 | 104.5 | 84.7 | 106.9 | 84.6 | 268.8 | 66.5 | |
| Industrial | | | | | | | 610.8 | |
| Municipal | | | | | | | 307.6 | |
| Non-US | 306.0 | 290.0 | 264.8 | 296.8 | 271.9 | | 187.0 | |
| UNITED STATES | 1,431.1 | 1,174.5 | 1,164.6 | 1,147.6 | 1,067.6 | | 950.2 | |
| |
| EBITDA |
| Integrated Solutions and Services | 249.4 | 217.8 | 213.1 | 205.8 | 186.8 | | | |
| Applied Product Technologies | 117.0 | 97.3 | 148.5 | 87.1 | 88.7 | | | |
| Intersegment Eliminations | | | | | | 268.8 | | |
| Industrial | | | | | | | 167.9 | 116.9 |
| Municipal | | | | | | | 47.6 | 29.8 |
| Earnings before interest, taxes, depreciation and amortization (EBITDA) | | | | | | 13.8 | | |
| |
| EBIT |
| Integrated Solutions and Services | 165.6 | 147.3 | 145.7 | 148.6 | 138.0 | | | |
| Applied Product Technologies | 103.1 | 82.9 | 134.3 | 69.4 | 71.9 | | | |
| Intersegment Eliminations | | | | | | 209.2 | | |
| Industrial | | | | | | | 129.7 | 86.3 |
| Municipal | | | | | | | 39.4 | 22.1 |
| Earnings before interest, taxes, depreciation and amortization (EBITDA) | | | | | | 13.8 | | |
| |
| Mix |
| Integrated Solutions and Services | 68.2% | 65.5% | 66.1% | 63.1% | 63.1% | 60.4% | | |
| Applied Product Technologies | 37.6% | 34.5% | 33.9% | 36.9% | 43.2% | 45.5% | | |
| Intersegment Eliminations | 8.0% | 7.1% | 5.9% | 7.4% | 6.3% | 21.5% | 5.9% | |
| Industrial | | | | | | | 53.7% | |
| Municipal | | | | | | | 27.1% | |
| Non-US | 17.6% | 19.8% | 18.5% | 20.5% | 20.3% | | 16.4% | |
| UNITED STATES | 82.4% | 80.2% | 81.5% | 79.5% | 79.7% | | 83.6% | |
| |
| Growth |
| Integrated Solutions and Services | 23.4% | 1.7% | 3.7% | 7.8% | 12.1% | | | |
| Applied Product Technologies | 29.5% | 4.0% | -9.1% | -7.9% | 2.0% | | | |
| Intersegment Eliminations | 32.4% | 23.3% | -20.7% | 26.3% | -68.5% | 304.0% | | |
| Non-US | 5.5% | 9.5% | -10.8% | 9.2% | | | | |
| UNITED STATES | 21.8% | 0.8% | 1.5% | 7.5% | | | | |