Segment Reporting, Number of Major Customers

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- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.3-4)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 3

-Subparagraph a(1)

-Article 5

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 4

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 275

-SubTopic 10

-Section 50

-Paragraph 18

-URI http://asc.fasb.org/extlink&oid=51801978&loc=d3e6351-108592

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 20

-URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13531-108611

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-Publisher FASB

-Name Accounting Standards Codification

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-Section 50

-Paragraph 20

-URI http://asc.fasb.org/extlink&oid=51801978&loc=d3e6404-108592

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

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-Section 50

-Paragraph 21

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-URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13537-108611

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

+ References

No definition available.

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- References

No definition available.

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Segment Information (Narrative) (Details) $ in Millions	12 Months Ended
Segment Information (Narrative) (Details) $ in Millions	Sep. 30, 2015 USD ($) business_segments customer	Sep. 30, 2014 USD ($)	Sep. 30, 2013	Sep. 30, 2012
Segment Reporting [Abstract]
Number of Reportable Segments \| business_segments	3
Revenue, Major Customer [Line Items]
Receivables, net	$ 175.3	$ 182.1
Customer Concentration Risk [Member] \| Major Customers, Group One
Revenue, Major Customer [Line Items]
Number of major customers \| customer	10
Customer Concentration Risk [Member] \| Major Customers, Group One \| Sales Revenue, Goods, Gross [Member]
Revenue, Major Customer [Line Items]
Concentration risk, percentage of benchmark	41.00%
Customer Concentration Risk [Member] \| Major Customers, Group Two
Revenue, Major Customer [Line Items]
Number of major customers \| customer	2
Customer Concentration Risk [Member] \| Major Customers, Group Two \| Sales Revenue, Goods, Gross [Member]
Revenue, Major Customer [Line Items]
Concentration risk, percentage of benchmark	25.00%
Customer Concentration Risk [Member] \| Ferguson Enterprises \| Sales Revenue, Goods, Gross [Member]
Revenue, Major Customer [Line Items]
Concentration risk, percentage of benchmark	13.00%	13.00%	12.00%
Customer Concentration Risk [Member] \| Ferguson Enterprises \| Sales Revenue, Goods, Gross [Member] \| Mueller Co. [Member]
Revenue, Major Customer [Line Items]
Concentration risk, percentage of benchmark	16.00%
Customer Concentration Risk [Member] \| Ferguson Enterprises \| Sales Revenue, Goods, Gross [Member] \| Anvil [Member]
Revenue, Major Customer [Line Items]
Concentration risk, percentage of benchmark	8.00%
Customer Concentration Risk [Member] \| Ferguson Enterprises \| Accounts Receivable [Member]
Revenue, Major Customer [Line Items]
Receivables, net	$ 28.2	$ 25.7
Customer Concentration Risk [Member] \| HD Supply \| Sales Revenue, Goods, Gross [Member]
Revenue, Major Customer [Line Items]
Concentration risk, percentage of benchmark	12.00%	11.00%		11.00%
Customer Concentration Risk [Member] \| HD Supply \| Sales Revenue, Goods, Gross [Member] \| Mueller Co. [Member]
Revenue, Major Customer [Line Items]
Concentration risk, percentage of benchmark	18.00%
Customer Concentration Risk [Member] \| HD Supply \| Sales Revenue, Goods, Gross [Member] \| Anvil [Member]
Revenue, Major Customer [Line Items]
Concentration risk, percentage of benchmark	5.00%
Customer Concentration Risk [Member] \| HD Supply \| Accounts Receivable [Member]
Revenue, Major Customer [Line Items]
Receivables, net	$ 17.4	$ 17.7