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v3.23.3

Document and Entity Information - USD ($) $ in Millions | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Sep. 30, 2023 | Mar. 31, 2023 | Nov. 10, 2022 | Sep. 30, 2022
Document Information [Line Items] |  |  |  |
Document Fiscal Period Focus | FY |  |  |
Document Period End Date | Sep. 30, 2023 |  |  |
Document Fiscal Year Focus | 2022 |  |  |
Entity Well-known Seasoned Issuer | Yes |  |  |
Entity Registrant Name | MUELLER WATER PRODUCTS, INC. |  |  |
Entity Central Index Key | 0001350593 |  |  |
Current Fiscal Year End Date | --09-30 |  |  |
Entity Filer Category | Large Accelerated Filer |  |  |
Document Type | 10-K |  |  |
Property, plant and equipment, net | $ 311.7 |  |  | $ 301.6
Intangible Assets, Net (Including Goodwill) | $ 427.7 |  |  | $ 459.8
Entity Voluntary Filers | No |  |  |
Entity Current Reporting Status | Yes |  |  |
Amendment Flag | false |  |  |
Entity Common Stock, Shares Outstanding |  |  | 156,112,060 |
Entity Shell Company | false |  |  |
Entity Emerging Growth Company | false |  |  |
Entity Small Business | false |  |  |
Entity Public Float |  | $ 2,149.2 |  |
ICFR Auditor Attestation Flag | true |  |  |
Document Financial Statement Error Correction [Flag] | false |  |  |

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