Borrowings (Details Textual 1) (USD $)
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0 Months Ended | 12 Months Ended | ||
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Apr. 30, 2012
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Feb. 28, 2015
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Feb. 28, 2014
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Feb. 28, 2013
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Derivative [Line Items] | ||||
Derivative fixed average interest rate | 2.80%us-gaap_DebtInstrumentInterestRateDuringPeriod | |||
LIBOR [Member] | ||||
Derivative [Line Items] | ||||
Floating LIBOR rate debt |
500,000,000us-gaap_SeniorNotes / us-gaap_VariableRateAxis = us-gaap_LondonInterbankOfferedRateLIBORMember |
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Cash flow hedging [Member] | ||||
Derivative [Line Items] | ||||
Net losses reclassified from AOCI to interest expense |
(3,900,000)us-gaap_DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet / us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis = us-gaap_CashFlowHedgingMember |
(4,000,000)us-gaap_DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet / us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis = us-gaap_CashFlowHedgingMember |
(3,100,000)us-gaap_DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet / us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis = us-gaap_CashFlowHedgingMember |
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Interest rate swap contracts [Member] | Cash flow hedging [Member] | Interest expense [Member] | ||||
Derivative [Line Items] | ||||
Net losses reclassified from AOCI to interest expense |
(8,300,000)us-gaap_DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_InterestRateContractMember / us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis = us-gaap_CashFlowHedgingMember / us-gaap_IncomeStatementLocationAxis = us-gaap_InterestExpenseMember |
(8,200,000)us-gaap_DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_InterestRateContractMember / us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis = us-gaap_CashFlowHedgingMember / us-gaap_IncomeStatementLocationAxis = us-gaap_InterestExpenseMember |
(8,000,000)us-gaap_DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_InterestRateContractMember / us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis = us-gaap_CashFlowHedgingMember / us-gaap_IncomeStatementLocationAxis = us-gaap_InterestExpenseMember |
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Interest rate swap contracts [Member] | Designated as hedging instrument [Member] | ||||
Derivative [Line Items] | ||||
Notional value of interest rate swap agreements |
500,000,000invest_DerivativeNotionalAmount / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_InterestRateContractMember / us-gaap_HedgingDesignationAxis = us-gaap_DesignatedAsHedgingInstrumentMember |
500,000,000invest_DerivativeNotionalAmount / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_InterestRateContractMember / us-gaap_HedgingDesignationAxis = us-gaap_DesignatedAsHedgingInstrumentMember |
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Interest rate swap contracts [Member] | Designated as hedging instrument [Member] | Cash flow hedging [Member] | ||||
Derivative [Line Items] | ||||
Notional value of interest rate swap agreements |
500,000,000.0invest_DerivativeNotionalAmount / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_InterestRateContractMember / us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis = us-gaap_CashFlowHedgingMember / us-gaap_HedgingDesignationAxis = us-gaap_DesignatedAsHedgingInstrumentMember |
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Interest rate swap contracts [Member] | Not designated as hedging instrument [Member] | ||||
Derivative [Line Items] | ||||
Notional value of interest rate swap agreements |
500,000,000.0invest_DerivativeNotionalAmount / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_InterestRateContractMember / us-gaap_HedgingDesignationAxis = us-gaap_NondesignatedMember |
$ 1,000,000,000invest_DerivativeNotionalAmount / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_InterestRateContractMember / us-gaap_HedgingDesignationAxis = us-gaap_NondesignatedMember |
$ 1,000,000,000invest_DerivativeNotionalAmount / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_InterestRateContractMember / us-gaap_HedgingDesignationAxis = us-gaap_NondesignatedMember |
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- Definition
Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The average effective interest rate during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Including the current and noncurrent portions, carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer). Senior note holders are paid off in full before any payments are made to junior note holders. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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