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Derivative Financial Instruments (Details) (USD $) | 3 Months Ended |  |
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May 02, 2015 | May 03, 2014 | Jan. 31, 2015 | Mar. 31, 2014
Derivative Contracts - Types, Statements of Financial Position Classification and Fair Values |  |  |  |
Amount of ineffectiveness recognized | $ 0 us-gaap_AmountOfIneffectivenessOnNetInvestmentHedges | $ 0 us-gaap_AmountOfIneffectivenessOnNetInvestmentHedges |  |
Derivative Contracts - Effect on Results of Operations |  |  |  |
Unamortized hedged debt valuation gains from terminated and de-designated interest rate swaps | 29,000,000 us-gaap_DeferredGainLossOnDiscontinuationOfInterestRateFairValueHedge | 48,000,000 us-gaap_DeferredGainLossOnDiscontinuationOfInterestRateFairValueHedge | 34,000,000 us-gaap_DeferredGainLossOnDiscontinuationOfInterestRateFairValueHedge |
Designated as Hedging Instrument |  |  |  |
Derivative Contracts - Types, Statements of Financial Position Classification and Fair Values |  |  |  |
Number of interest rate swaps | 3 us-gaap_NumberOfInterestRateDerivativesHeld / us-gaap_HedgingDesignationAxis = us-gaap_DesignatedAsHedgingInstrumentMember | 2 us-gaap_NumberOfInterestRateDerivativesHeld / us-gaap_HedgingDesignationAxis = us-gaap_DesignatedAsHedgingInstrumentMember |  |
Interest rate swaps |  |  |  |
Derivative Contracts - Types, Statements of Financial Position Classification and Fair Values |  |  |  |
Derivative, notional amount |  |  |  | 250,000,000 invest_DerivativeNotionalAmount / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_InterestRateSwapMember
Derivative Contracts - Effect on Results of Operations |  |  |  |
Net interest expense | $ (9,000,000)us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_InterestRateSwapMember | $ (5,000,000)us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_InterestRateSwapMember |  |

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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 + Details
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- Definition Gain (loss) on hedging derivative instrument or the foreign currency transaction gain (loss) on the nonderivative hedging instrument designated as a hedge of a net investment in foreign operations related to hedge ineffectiveness, which is included in earnings in the period. + 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 (d)(1) -URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5624171-113959 + Details
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- Definition Amount as of the balance sheet date of the unamortized adjustment to the carrying value of an interest-bearing hedged item made under an effective interest rate fair value hedge that is amortized upon discontinuation of the interest rate fair value hedge. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 25 -Section 35 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=6439857&loc=d3e75592-113984 + Details
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- Details
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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=35706170&loc=SL5624171-113959 + Details
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- Definition Number of interest rate derivative instruments held by the entity at the reporting date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5580258-113959 Reference 2: 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=35706170&loc=SL5579245-113959 + Details
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