Long-Term Debt Long-Term Debt (Canada Revolving Line of Credit) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
Dec. 31, 2013 Canada revolving line of credit, interest payable quarterly at 1.84% [Member]	Aug. 30, 2013 Canada revolving line of credit, interest payable quarterly at 1.84% [Member]	Oct. 10, 2013 Senior Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Credit facility, maximum borrowing capacity		$ 15.0	$ 800.0
Credit commitment outstanding		$ 15.0
Basis spread on variable rate	1.60%

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

No definition available.

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- Details

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- Definition

Amount borrowed under the credit facility as of the balance sheet date.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ 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 210.5-02.19(b),22(b))

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

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant