| Cover Page Document | Sep. 18, 2019 |
| Document Information [Line Items] | |
| Entity Central Index Key | 0001350593 |
| Entity Emerging Growth Company | false |
| Title of 12(b) Security | Common stock, par value $0.01 per share |
| Written Communications | false |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-32892 |
| Entity Tax Identification Number | 20-3547095 |
| Entity Address, Address Line One | 1200 Abernathy Road |
| Entity Address, Address Line Two | Suite 1200 |
| Entity Address, City or Town | Atlanta |
| Entity Address, State or Province | GA |
| Entity Address, Postal Zip Code | 30328 |
| City Area Code | (770) |
| Local Phone Number | 206-4200 |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Trading Symbol | MWA |
| Security Exchange Name | NYSE |
| Entity Ex Transition Period | false |
| Amendment Flag | false |
| Document Type | 8-K |
| Document Period End Date | Sep. 18, 2019 |
| Entity Registrant Name | MUELLER WATER PRODUCTS, INC. |
