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Restructuring and other charges (Notes)	9 Months Ended
	Jun. 30, 2016
Restructuring Cost and Reserve [Line Items]
Restructuring, Impairment, and Other Activities Disclosure [Text Block]	During the quarter ended June 30, 2016, we initiated certain demolition and related activities for our Statesboro, Georgia property, some of the costs of which are indemnified by Tyco as explained in Note 10. We have recorded a receivable from Tyco for our estimated recovery under the indemnification and a net charge of $3.6 million under the caption other charges. In December 2014, Mueller Co. sold certain assets related to its municipal casting operations in Canada and closed the associated facility. These actions resulted in other charges of $7.2 million, which was comprised of a $2.5 million impairment charge, $2.3 million of environmental remediation costs and $2.4 million of severance and other costs. These operations generated net sales of $11.5 million during 2014.

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- Definition

The entire disclosure of costs incurred for restructuring including, but not limited to, exit and disposal activities, remediation, implementation, integration, asset impairment, and charges against earnings from the write-down of assets.

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