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

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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- Definition

The estimated net amount of existing gains or losses on cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=7668309&loc=d3e80748-113994

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- Definition

Average remaining period until maturity of the derivative contract, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

Fair value 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, elected not to be offset against an obligation to return collateral under a master netting arrangement.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 20

-Section 50

-Paragraph 3

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=20225523&loc=SL20225862-175312

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 8

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=7476318&loc=d3e41678-113959

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 20

-Section 55

-Paragraph 11

-URI http://asc.fasb.org/extlink&oid=28370219&loc=SL20226011-175313

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 20

-Section 55

-Paragraph 9

-URI http://asc.fasb.org/extlink&oid=28370219&loc=SL20226006-175313

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- Definition

Fair value 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 offset against a right to receive collateral under a master netting arrangement.

+ References

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- Definition

High end period remaining until maturity for the derivative contract, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments.

+ 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 (e)

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

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- Definition

Low end period remaining until maturity of derivative contract, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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Description of Business, Basis of Presentation and Summary of Significant Accounting Policies (Details Textual 1) (USD $)	12 Months Ended						12 Months Ended					12 Months Ended
	Feb. 28, 2014	Feb. 28, 2013	Feb. 28, 2013 Commodity swap contracts [Member] Unusual Items [Member]	Feb. 29, 2012 Commodity swap contracts [Member] Unusual Items [Member]	Feb. 28, 2014 Not designated as hedging instrument [Member] Foreign currency contracts [Member]	Feb. 28, 2013 Not designated as hedging instrument [Member] Foreign currency contracts [Member]	Feb. 28, 2014 Not designated as hedging instrument [Member] Commodity swap contracts [Member]	Feb. 28, 2013 Not designated as hedging instrument [Member] Commodity swap contracts [Member]	Feb. 28, 2014 Not designated as hedging instrument [Member] Interest rate swap contracts [Member]	Feb. 28, 2013 Not designated as hedging instrument [Member] Interest rate swap contracts [Member]	Apr. 30, 2012 Not designated as hedging instrument [Member] Interest rate swap contracts [Member]	Feb. 28, 2014 Designated as hedging instrument [Member] Cash flow hedging [Member]	Feb. 28, 2014 Designated as hedging instrument [Member] Foreign currency contracts [Member] Cash flow hedging [Member]	Feb. 28, 2013 Designated as hedging instrument [Member] Foreign currency contracts [Member] Cash flow hedging [Member]	Feb. 28, 2014 Designated as hedging instrument [Member] Commodity swap contracts [Member] Cash flow hedging [Member]	Feb. 28, 2013 Designated as hedging instrument [Member] Commodity swap contracts [Member] Cash flow hedging [Member]	Feb. 28, 2014 Designated as hedging instrument [Member] Interest rate swap contracts [Member] Cash flow hedging [Member]	Feb. 28, 2013 Designated as hedging instrument [Member] Interest rate swap contracts [Member] Cash flow hedging [Member]	Apr. 30, 2012 Designated as hedging instrument [Member] Interest rate swap contracts [Member] Cash flow hedging [Member]	Sep. 02, 2011 Designated as hedging instrument [Member] Interest rate swap contracts [Member] Cash flow hedging [Member]	Jun. 30, 2010 Designated as hedging instrument [Member] Interest rate swap contracts [Member] Cash flow hedging [Member]
Derivative [Line Items]
Maturity of derivative instruments					12 months		36 months
Net gain (loss) on commodity swap contracts reported outside of segment operating results	$ (2,100,000)	$ (4,300,000)	$ 0	$ 0
Notional value of derivative instruments					643,800,000	355,100,000	88,000,000	0	1,000,000,000	1,000,000,000.0	500,000,000		636,600,000	220,300,000	0	17,400,000	500,000,000	500,000,000.0	500,000,000	500,000,000.0	500,000,000.0
Average maturity period for cash flow hedges												3 years
Maximum maturity period for cash flow hedges												5 years
Amount of net losses, net of income tax effect, to be reclassified from AOCI to earnings within the next 12 months	3,100,000
Fair value of derivative instruments in a net liability position due to counterparties	30,400,000
Fair value of derivative instruments in a net receivable position due from counterparties	$ 17,000,000