Derivative Financial Instruments and Hedging Activities Derivatives (Details) (USD $)	12 Months Ended	3 Months Ended
Aug. 31, 2014	Nov. 30, 2014	Nov. 30, 2013
Purchase and Sales Contracts [Line Items]
Foreign Currency Derivative Instruments Not Designated as Hedging Instruments, Asset at Fair Value		$ 6,900,000
Foreign Currency Derivative Instruments Not Designated as Hedging Instruments, Liability at Fair Value			300,000
Derivative Asset, Fair Value, Amount Not Offset Against Collateral	560,530,000	543,424,000
Derivative Asset, Fair Value, Gross Asset	603,933,000	700,566,000
Derivative Asset, Fair Value, Gross Amount Not Offset on Balance Sheet	43,403,000	157,142,000
Derivative Liability, Fair Value, Amount Not Offset Against Collateral	554,083,000	419,031,000
Derivative Liability, Fair Value, Gross Liability	599,990,000	629,339,000
Derivative Liability, Collateral, Right to Reclaim Cash, Offset	2,504,000	53,166,000
Derivative Liability, Fair Value, Gross Amount Not Offset on Balance Sheet	43,403,000	157,142,000
Commodity and Freight Derivatives [Member]
Purchase and Sales Contracts [Line Items]
Derivative Asset, Fair Value, Amount Not Offset Against Collateral	554,981,000	524,326,000
Derivative Asset, Fair Value, Gross Asset	597,210,000	681,270,000
Derivative Asset, Fair Value, Gross Amount Not Offset on Balance Sheet	42,229,000	156,944,000
Derivative Liability, Fair Value, Amount Not Offset Against Collateral	552,879,000	418,255,000
Derivative Liability, Fair Value, Gross Liability	597,612,000	628,365,000
Derivative Liability, Collateral, Right to Reclaim Cash, Offset	2,504,000	53,166,000
Derivative Liability, Fair Value, Gross Amount Not Offset on Balance Sheet	42,229,000	156,944,000
Foreign Exchange Contract [Member]
Purchase and Sales Contracts [Line Items]
Derivative Asset, Fair Value, Amount Not Offset Against Collateral	1,349,000	6,731,000
Derivative Asset, Fair Value, Gross Asset	2,523,000	6,929,000
Derivative Asset, Fair Value, Gross Amount Not Offset on Balance Sheet	1,174,000	198,000
Derivative Liability, Fair Value, Amount Not Offset Against Collateral	1,074,000	66,000
Derivative Liability, Fair Value, Gross Liability	2,248,000	264,000
Derivative Liability, Collateral, Right to Reclaim Cash, Offset	0	0
Derivative Liability, Fair Value, Gross Amount Not Offset on Balance Sheet	1,174,000	198,000
Designated as Hedging Instrument [Member] \| Interest Rate Swap [Member]
Purchase and Sales Contracts [Line Items]
Derivative Asset, Fair Value, Amount Not Offset Against Collateral	4,200,000	12,367,000
Derivative Asset, Fair Value, Gross Asset	4,200,000	12,367,000
Derivative Asset, Fair Value, Gross Amount Not Offset on Balance Sheet	0	0
Derivative Liability, Fair Value, Amount Not Offset Against Collateral		594,000
Derivative Liability, Fair Value, Gross Liability		594,000
Derivative Liability, Collateral, Right to Reclaim Cash, Offset		0
Derivative Liability, Fair Value, Gross Amount Not Offset on Balance Sheet		0
Not Designated as Hedging Instrument [Member] \| Interest Rate Swap [Member]
Purchase and Sales Contracts [Line Items]
Derivative Liability, Fair Value, Amount Not Offset Against Collateral	130,000	116,000
Derivative Liability, Fair Value, Gross Liability	130,000	116,000
Derivative Liability, Collateral, Right to Reclaim Cash, Offset	0	0
Derivative Liability, Fair Value, Gross Amount Not Offset on Balance Sheet	0	0
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] \| Reclassification out of Accumulated Other Comprehensive Income [Member]
Purchase and Sales Contracts [Line Items]
Gain on Discontinuation of Cash Flow Hedge Due to Forecasted Transaction Probable of Not Occurring	13,500,000
Fair Value Hedging [Member] \| Designated as Hedging Instrument [Member]
Purchase and Sales Contracts [Line Items]
Increase (Decrease) in Fair Value of Hedged Item in Interest Rate Fair Value Hedge		8,200,000
Fair Value Hedging [Member] \| Interest Rate Swap [Member] \| Designated as Hedging Instrument [Member]
Purchase and Sales Contracts [Line Items]
Derivative Asset, Notional Amount		420,000,000
Cash Flow Hedging [Member] \| Interest Rate Swap [Member] \| Designated as Hedging Instrument [Member]
Purchase and Sales Contracts [Line Items]
Derivative Asset, Notional Amount		100,000,000
Interest Rate Contracts, Expiring At Various Times Through Fiscal 2018 [Member] \| Not Designated as Hedging Instrument [Member]
Purchase and Sales Contracts [Line Items]
Derivative Asset, Notional Amount		4,500,000
Interest Rate Contracts, Expiring During Fiscal 2015 [Member] \| Designated as Hedging Instrument [Member]
Purchase and Sales Contracts [Line Items]
Derivative Asset, Notional Amount		0
Interest Rate Contracts, Expiring During Fiscal 2015 [Member] \| Not Designated as Hedging Instrument [Member]
Purchase and Sales Contracts [Line Items]
Derivative Asset, Notional Amount		$ 300,000

Derivative Asset, Fair Value, Gross Amount Not Offset on Balance Sheet

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Derivative Liability, Fair Value, Gross Amount Not Offset on Balance Sheet

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- Definition

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 12

-Section 13

-Sentence Column B

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Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

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-Name Accounting Standards Codification

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Fair value, after offset of derivative liability, of financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, before offset against an obligation to return collateral under a master netting arrangement. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

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Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

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Fair value, after offset of derivative asset, of financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, elected not to be and before offset against a right to receive collateral under a master netting arrangement. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

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Amount of right to receive cash collateral under master netting arrangements offset against derivative liabilities.

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

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

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- Definition

The amount of gain reclassified into earnings in the period when cash flow hedge is discontinued because it is probable that the original forecasted transactions will not occur by the end of the original period or an additional two month time period.

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Amount of unrealized gain (loss) included in earnings related to the fair value of the hedged item in an interest rate fair value hedge, offset by the gain (loss) on the hedging instrument to the extent that the fair value hedge is determined to be effective.

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