Consolidating Guarantor And Non-Guarantor Financial Information (Schedule Of Guarantor Companies) (Details)	9 Months Ended
	Jun. 30, 2012
Anvil International Holdings, LLC [Member]
State of Incorporation or organization	Delaware
Anvil International, LLC [Member]
State of Incorporation or organization	Delaware
AnvilStar, LLC [Member]
State of Incorporation or organization	Delaware
Echologics, LLC [Member]
State of Incorporation or organization	Delaware
Henry Pratt Company, LLC [Member]
State of Incorporation or organization	Delaware
Henry Pratt International, LLC [Member]
State of Incorporation or organization	Delaware
Hunt Industries, LLC [Member]
State of Incorporation or organization	Delaware
Hydro Gate, LLC [Member]
State of Incorporation or organization	Delaware
J.B. Smith Mfg. Co., LLC [Member]
State of Incorporation or organization	Delaware
James Jones Company, LLC [Member]
State of Incorporation or organization	Delaware
MCO 1 LLC [Member]
State of Incorporation or organization	Alabama
MCO 2 LLC [Member]
State of Incorporation or organization	Alabama
Milliken Valve, LLC [Member]
State of Incorporation or organization	Delaware
Mueller Co. International Holdings, LLC [Member]
State of Incorporation or organization	Delaware
Mueller Co. LLC [Member]
State of Incorporation or organization	Delaware
Mueller Financial Services, LLC [Member]
State of Incorporation or organization	Delaware
Mueller Group Co-Issuer, Inc. [Member]
State of Incorporation or organization	Delaware
Mueller Group, LLC [Member]
State of Incorporation or organization	Delaware
Mueller International, LLC [Member]
State of Incorporation or organization	Delaware
Mueller Service California, Inc. [Member]
State of Incorporation or organization	Delaware
Mueller Service Co., LLC [Member]
State of Incorporation or organization	Delaware
Mueller Systems, LLC [Member]
State of Incorporation or organization	Delaware
U.S. Pipe Valve & Hydrant, LLC [Member]
State of Incorporation or organization	Delaware