Changed in Accounting Estimate, Financial Effect, Amount

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- Definition

Number of Refineries

+ References

No definition available.

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- Definition

Short-term Bank Loans and Notes Payable, Term

+ References

No definition available.

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- Definition

The amount of losses on a cash flow hedge reclassified in the period to cost of sales from accumulated other comprehensive income.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4C

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624171-113959

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 133

-Paragraph 45

-Subparagraph b(1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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

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- Definition

Reflects the calculation as of the balance sheet date of the average interest rate weighted by the amount of debt outstanding by type or by instrument at that time.

+ References

No definition available.

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- Definition

The estimated value of gains (losses), net anticipated to be transferred in the future from accumulated other comprehensive income into earnings.

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No definition available.

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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No definition available.

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- Definition

Fair value as of the balance sheet date of all foreign currency derivative assets not designated as hedging instruments.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 133

-Paragraph 17

-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 815

-SubTopic 10

-Section 50

-Paragraph 4B

-Subparagraph (c)(2)

-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624163-113959

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- Definition

Fair value as of the balance sheet date of all foreign currency derivative liabilities not designated as hedging instruments.

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- Definition

Aggregate notional amount of all interest rate derivatives designated as hedging instruments in cash flow hedges. Notional amount refers to the monetary amount specified in the interest rate derivative contract.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 1A

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5579245-113959

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Notional Amount

-URI http://asc.fasb.org/extlink&oid=6519104

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 1B

-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5580258-113959

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- Definition

The percentage rate used to calculate dividend payments on preferred stock.

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No definition available.

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- Definition

Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 29

-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 210.5-02.28)

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- Definition

Describes the periods of time over which an entity anticipates to receive utility from its property, plant and equipment (that is, the periods of time over which an entity allocates the initial cost of its property, plant and equipment).

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section 50

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6367646&loc=d3e18780-107790

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-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-URI http://asc.fasb.org/subtopic&trid=2155824

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The number of units or percentage investment held in the subsidiary by the limited liability company or limited partnership.

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 22

-Article 12

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Summary of Significant Accounting Policies - Narrative (Details) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended				12 Months Ended
	Aug. 31, 2012 Refineries	Aug. 31, 2010	Aug. 31, 2012 Interest Rate Contracts, Expiring At Various Times Through Fiscal 2018	Aug. 31, 2012 Interest Rate Contracts, Expiring During Fiscal 2013	Aug. 31, 2012 Minimum Subsidiaries	Aug. 31, 2012 Minimum Customer Lists, Trademarks and Agreements Not to Compete	Aug. 31, 2012 Minimum Major Maintenace Activities Requiring Shutdown	Aug. 31, 2012 Minimum Land Improvements and Buildings	Aug. 31, 2012 Minimum Machinery, Equipment, Office and Other	Aug. 31, 2012 Maximum	Aug. 31, 2012 Maximum Customer Lists, Trademarks and Agreements Not to Compete	Aug. 31, 2012 Maximum Major Maintenace Activities Requiring Shutdown	Aug. 31, 2012 Maximum Land Improvements and Buildings	Aug. 31, 2012 Maximum Machinery, Equipment, Office and Other	Aug. 31, 2012 Service Life	Aug. 31, 2011 Service Life
Equity
Preferred stock, dividend rate, percentage	8.00%	8.00%
Preferred stock, shares outstanding	12,272,003
Derivative Instrument Detail
Cash Flow Hedge Loss Reclassified to Cost of Sales	$ 3.9
Notes Payable Maturities										30 days
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred	6.3
Notional Amount of Interest Rate Cash Flow Hedge Derivatives			12.5	0.3
Debt, Weighted Average Interest Rate	5.20%
Foreign Currency Derivative Instruments Not Designated as Hedging Instruments, Assets at Fair Value	1.0
Property, Plant and Equipment
Property, Plant and Equipment, Estimated Useful Lives								P15Y	P3Y				P40Y	P20Y	P20Y	P16Y
Change in Accounting Estimate, Financial Effect															27.0
Finite-Lived Intangible Assets, Net
Finite-Lived Intangible Asset, Useful Life						3 years	2 years				30 years	4 years
Number of Refineries	2
Income Taxes [Abstract]
Subsidiaries Ownership Percentage					80.00%
Foreign Currency Derivative Instruments Not Designated as Hedging Instruments, Liability at Fair Value	$ 2.4