Maximum consolidated leverage ratio permitted under our Credit Facility.

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- Definition

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

+ Details

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- Definition

Amount of the hedged item as of the balance sheet date related to the derivative. For example, the hedged balance on a debt instrument.

+ Details

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- Definition

Fixed interest rate related to the interest rate derivative.

+ Details

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- Definition

The maximum amount of borrowing capacity under a line of credit that is available as of the balance sheet date for a specific purpose other than for financing goods acquired for inventory or imminent delivery to a customer.

+ Details

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- Definition

Reflects when the credit facility terminates, which may be presented in a variety of ways (year, month and year, day, month and year, quarter).

+ 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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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

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- 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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- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ Details

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Debt (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended			1 Months Ended								3 Months Ended
	Sep. 30, 2011	Dec. 31, 2010	Jul. 31, 2011 Outdated Unsecured Short Term Revolving Credit Facility [Member]	Jul. 31, 2011 Amended And Restated Unsecured Short-Term Credit Facility Assuming Hypothetical Request For An Increase In The Aggregate Commitments Is Approved By Lenders [Member]	Jul. 31, 2011 Amended And Restated Unsecured Short Term Revolving Credit Facility [Member]	Sep. 30, 2011 Minimum Credit Spread On LIBOR Or CDOR Borrowings [Member]	Sep. 30, 2011 Maximum Credit Spread On LIBOR Or CDOR Borrowings [Member]	Sep. 30, 2011 Maximum Credit Spread On Prime Rate Borrowings [Member]	Sep. 30, 2011 Interest Rate Swap Effective On March 30, 2012 [Member]	Sep. 30, 2011 Interest Rate Swap Effective On March 31 2010 [Member]	Sep. 30, 2011 Interest Rate Swap Effective On March 28, 2013 [Member]	Sep. 30, 2011 Minimum [Member]	Sep. 30, 2011 Maximum [Member]
Borrowing capacity			$ 200		$ 300
Credit Facility maturity date				July 25, 2016
Credit spread during period						0.875%	1.25%	0.25%
Reduction of Credit Facility Availability	1.0	1.0
Commitment fees												0.15%	0.30%
Credit Facility borrowings hedged	$ 80								$ 40	$ 80	$ 40
Fixed portion of interest rate associated with interest rate swap									1.36%	2.00%	1.64%
Consolidated leverage ratio under credit facility, maximum	3