Segment Information (Assets by Reportable Segment) (Details) - USD ($) $ in Millions |
Jun. 30, 2026 |
Sep. 30, 2025 |
|---|---|---|
| Segment Reporting [Line Items] | ||
| Intangible assets, net and goodwill | $ 392.7 | $ 396.5 |
| Inventories, net | 379.8 | 328.7 |
| Operating Segments | Water Flow Solutions | ||
| Segment Reporting [Line Items] | ||
| Intangible assets, net and goodwill | 264.3 | 264.5 |
| Inventories, net | 239.6 | 197.2 |
| Operating Segments | Water Management Solutions | ||
| Segment Reporting [Line Items] | ||
| Intangible assets, net and goodwill | 128.4 | 132.0 |
| Inventories, net | $ 140.2 | $ 131.5 |
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- Definition Amount, after accumulated amortization, of finite- and indefinite-lived intangible assets, goodwill, and capitalized cost for software to be sold, leased, or marketed. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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