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Pension, Postretirement Health Care and Other Benefits (Details 2) (Prepaid forward contracts, USD $) Share data in Millions, except Per Share data, unless otherwise specified | 3 Months Ended | 12 Months Ended
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May 02, 2015 | May 03, 2014 | Jan. 31, 2015
Prepaid forward contracts |  |  |
Prepaid Forward Contracts on Target Common Stock |  |  |
Change in fair value for contracts indexed to Target common stock, recognized in earnings, pretax | $ 3,000,000 us-gaap_GainLossOnDerivativeInstrumentsNetPretax / us-gaap_DerivativeByNatureAxis = us-gaap_ForwardContractsMember | $ 7,000,000 us-gaap_GainLossOnDerivativeInstrumentsNetPretax / us-gaap_DerivativeByNatureAxis = us-gaap_ForwardContractsMember |
Payments for derivative instrument, investing activities | 0 us-gaap_PaymentsForProceedsFromDerivativeInstrumentInvestingActivities / us-gaap_DerivativeByNatureAxis = us-gaap_ForwardContractsMember | 0 us-gaap_PaymentsForProceedsFromDerivativeInstrumentInvestingActivities / us-gaap_DerivativeByNatureAxis = us-gaap_ForwardContractsMember |
Number of Shares | 0.4 us-gaap_OptionIndexedToIssuersEquityIndexedShares / us-gaap_DerivativeByNatureAxis = us-gaap_ForwardContractsMember | 1.3 us-gaap_OptionIndexedToIssuersEquityIndexedShares / us-gaap_DerivativeByNatureAxis = us-gaap_ForwardContractsMember | 0.5 us-gaap_OptionIndexedToIssuersEquityIndexedShares / us-gaap_DerivativeByNatureAxis = us-gaap_ForwardContractsMember
Contractual Price Paid per Share | $ 41.13 us-gaap_OptionIndexedToIssuersEquityStrikePrice1 / us-gaap_DerivativeByNatureAxis = us-gaap_ForwardContractsMember | $ 48.81 us-gaap_OptionIndexedToIssuersEquityStrikePrice1 / us-gaap_DerivativeByNatureAxis = us-gaap_ForwardContractsMember | $ 41.11 us-gaap_OptionIndexedToIssuersEquityStrikePrice1 / us-gaap_DerivativeByNatureAxis = us-gaap_ForwardContractsMember
Contractual Fair Value | 35,000,000 us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAssetAtFairValue / us-gaap_DerivativeByNatureAxis = us-gaap_ForwardContractsMember | 80,000,000 us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAssetAtFairValue / us-gaap_DerivativeByNatureAxis = us-gaap_ForwardContractsMember | 38,000,000 us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAssetAtFairValue / us-gaap_DerivativeByNatureAxis = us-gaap_ForwardContractsMember
Total Cash Investment | $ 18,000,000 tgt_OptionIndexedToIssuersEquityCashInvestment / us-gaap_DerivativeByNatureAxis = us-gaap_ForwardContractsMember | $ 63,000,000 tgt_OptionIndexedToIssuersEquityCashInvestment / us-gaap_DerivativeByNatureAxis = us-gaap_ForwardContractsMember | $ 21,000,000 tgt_OptionIndexedToIssuersEquityCashInvestment / us-gaap_DerivativeByNatureAxis = us-gaap_ForwardContractsMember

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- Definition Fair value as of the balance sheet date of derivative instrument not designated as hedging instrument and classified as an asset. + References Reference 1: 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=35706170&loc=SL5624163-113959 + Details
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- Definition Aggregate net gain (loss) on all derivative instruments recognized in earnings during the period, before tax effects. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5618551-113959 + Details
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- Definition The number of issuer's shares to which the option contract is indexed. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 40 -Section 50 -Paragraph 5 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=6445032&loc=d3e90205-114008 + Details
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- Definition Exercise or strike price stated in the contract for options indexed to the issuer's equity shares. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(1) -URI http://asc.fasb.org/extlink&oid=6940734&loc=d3e22047-110879 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 40 -Section 50 -Paragraph 5 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=6445032&loc=d3e90205-114008 + Details
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- Definition The net cash outflow or inflow from derivative instruments during the period, which are classified as investing activities, excluding those designated as hedging instruments. + References No definition available. + Details
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