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Financial Instruments - Additional Information (Detail) (USD $) In Millions, unless otherwise specified | 12 Months Ended
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Jan. 31, 2015 | Feb. 01, 2014 | Feb. 02, 2013
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Realized gains/losses on derivative | $ 24.3 us-gaap_GainLossOnSaleOfDerivatives | $ 10.7 us-gaap_GainLossOnSaleOfDerivatives | $ 1.2 us-gaap_GainLossOnSaleOfDerivatives
Diesel Fuel Contracts Fiscal Year Twenty Sixteen |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Hedge of diesel fuel requirement | 44.00%tjx_HedgeDieselFuelRequirement / us-gaap_StatementScenarioAxis = tjx_DieselFuelContractsFiscalYearTwentySixteenMember |  |

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- Definition Hedge diesel fuel requirement + References No definition available. + Details
Name: | tjx_HedgeDieselFuelRequirement
Namespace Prefix: | tjx_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_DerivativeInstrumentsGainLossLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition The difference between the book value and the sale price of options, swaps, futures, forward contracts, and other derivative instruments. This element refers to the gain (loss) included in earnings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.13(h)) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 + Details
Name: | us-gaap_GainLossOnSaleOfDerivatives
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Details
Name: | us-gaap_StatementScenarioAxis=tjx_DieselFuelContractsFiscalYearTwentySixteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |