XML 12 R1.htm IDEA: XBRL DOCUMENT v3.25.1

Document and Entity Information - shares	6 Months Ended
	Mar. 31, 2025	May 02, 2025
Document And Entity Information [Abstract]
Document Fiscal Period Focus	Q2
Document Period End Date	Mar. 31, 2025
Document Fiscal Year Focus	2025
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-Q
Entity Current Reporting Status	Yes
Entity Emerging Growth Company	false
Amendment Flag	false
Entity Common Stock, Shares Outstanding		156,677,534
Entity Small Business	false
Title of 12(b) Security	Common stock, par value $0.01
Trading Symbol	MWA
Security Exchange Name	NYSE

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