2011 Credit Agreement, Line Of Credit Facility Commitment Fee (Per Annum)

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- Definition

Line Of Credit Facility Covenant Minimum Collateral Percentage

+ Details

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- Definition

Line Of Credit Facility Incremental Borrowing Capacity

+ Details

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Balance Type:	credit
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- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ Details

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- Definition

Description of the conditions for borrowing under the credit facility including the nature of any restrictions.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 129
-Paragraph 2, 4
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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

Reference 3: 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

+ Details

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- Definition

Description of a short-term or long-term contractual arrangement with a lender, including letter of credit, standby letter of credit, and revolving credit arrangements, under which borrowings can be made up to maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line of credit.

+ References

+ Details

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Period Type:	duration

- Definition

Increase for additional borrowings on the credit facility during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 4
-Section 08
-Paragraph f

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(f))
-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690

+ Details

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

- 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

+ Details

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

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ 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

Reference 2: 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

+ Details

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

Long-Term Debt (Narrative) (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended			9 Months Ended			9 Months Ended
	Jun. 30, 2011	Oct. 31, 2007 2007 Credit Facility [Member]	Nov. 30, 2008 2008 Credit Facility [Member]	Jun. 30, 2011 2011 Credit Facility [Member]	Jun. 30, 2011 2011 Credit Facility [Member] Maximum [Member]	Jun. 30, 2011 2011 Credit Facility [Member] Minimum [Member]	Jun. 30, 2011 Leverage Ratio [Member]	Jun. 30, 2011 Debt To Capitalization Ratio [Member]	Jun. 30, 2011 Interest Expense Coverage Ratio [Member]
Credit facility capacity		$ 300.0	$ 280.0		$ 1,100.0	$ 750.0
Incremental commitment				350
Funds available under credit facility				350
2011 Credit Agreement, description	Loans under this facility will bear interest of the Eurodollar Rate plus a margin of 2.50%.
2011 Credit Agreement, commitment fee (per annum)				1.00%
Standby letters of credit				2.2
Various financial covenants							ratio of 4.0 to 1.0	ratio of 0.5 to 1.0	ratio of 3.0 to 1.0
Minimum collateral percentage	150.00%
Additional funds borrowed				$ 0