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Maximum ratio of debt to annual earnings before interest, taxes, depreciation and amortization as per agreement.

+ References

No definition available.

+ Details

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- Definition

Minimum ratio of annual earnings before interest, taxes, depreciation and amortization to interest payable as per agreement.

+ References

No definition available.

+ Details

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- Definition

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

+ References

No definition available.

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- Definition

The stated principal amount of the debt instrument at time of issuance, which may vary from the carrying amount because of unamortized premium or discount.

+ References

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

-Publisher AICPA

-Name Accounting Principles Board Opinion (APB)

-Number 21

-Paragraph 16, 20

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 55

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=6584090&loc=d3e28878-108400

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- Definition

Interest rate stated in the contractual debt agreement.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 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 210.5-02.22(a)(1))

-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

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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Current Liabilities (Details) (USD $) In Millions, unless otherwise specified											6 Months Ended
	Feb. 17, 2012	Mar. 22, 2007	Mar. 12, 2007	Mar. 12, 2007 5.40 percent fixed-rate notes due 2012 [Member]	Jan. 31, 2012 Minimum [Member]	Jan. 31, 2012 Maximum [Member]	Feb. 17, 2012 JP Morgan Alternate Base [Member] Minimum [Member]	Feb. 17, 2012 JP Morgan Alternate Base [Member] Maximum [Member]	Feb. 17, 2012 LIBOR [Member] Minimum [Member]	Feb. 17, 2012 LIBOR [Member] Maximum [Member]	Jan. 31, 2012 LineofCreditOld [Member]	Jan. 31, 2012 LineofCreditNew [Member]
Current Liabilities (Textuals)
Debt Instrument, Face Amount			$ 1,000	$ 500
Senior notes, rate				5.40%
Unsecured revolving credit facility	$ 500	$ 500
Debt Instrument, Basis Spread on Variable Rate					0.18%	0.575%	0.00%	0.50%	0.90%	1.50%
Maximum ratio of debt to annual earnings before interest, taxes, depreciation and amortization as per agreement											3.25	3.25
Minimum ratio of annual earnings before interest, taxes, depreciation and amortization to interest payable as per agreement											3	3