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Long-Term Debt and Credit Lines - Additional Information (Detail) | 6 Months Ended | 12 Months Ended |  |  |
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Aug. 04, 2018 CAD ($) CreditFacility | Jul. 29, 2017 CAD ($) CreditFacility | Feb. 03, 2018 CAD ($) CreditFacility | Aug. 04, 2018 GBP (£) CreditFacility | Aug. 04, 2018 USD ($) CreditFacility | Feb. 03, 2018 GBP (£) CreditFacility | Feb. 03, 2018 USD ($) CreditFacility | Jul. 29, 2017 GBP (£) CreditFacility | Jul. 29, 2017 USD ($) CreditFacility
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Revolving credit facilities, number | CreditFacility | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2
Quarterly payments on unused committed amounts | 0.06% |  |  |  |  |  |  |  |
Ratio of funded debt and four-times consolidated rentals to consolidated earnings before interest, taxes, consolidated rentals, depreciation and amortization | 275.00% |  |  | 275.00% | 275.00% |  |  |  |
Credit facilities, amount outstanding |  |  |  |  | $ 0 |  | $ 0 |  | $ 0
Revolving Credit Facility March 2020 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Current borrowing capacity |  |  |  |  | 500,000,000 |  | 500,000,000 |  | 500,000,000
Maturity Month/Year | 2020-03 | 2020-03 | 2020-03 |  |  |  |  |  |
Revolving Credit Facility March 2022 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Current borrowing capacity |  |  |  |  | $ 500,000,000 |  | $ 500,000,000 |  | $ 500,000,000
Maturity Month/Year | 2022-03 | 2022-03 | 2022-03 |  |  |  |  |  |
TJX Canada |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Current borrowing capacity | $ 10,000,000 | $ 10,000,000 | $ 10,000,000 |  |  |  |  |  |
Credit facilities, amount outstanding | 0 | 0 | 0 |  |  |  |  |  |
TJX Canada | Letter of Credit |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Current borrowing capacity | 10,000,000 | 10,000,000 | 10,000,000 |  |  |  |  |  |
Credit facilities, amount outstanding | $ 0 | $ 0 | $ 0 |  |  |  |  |  |
TJX International | TJX Europe Credit Line |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Current borrowing capacity | £ |  |  |  | £ 5,000,000 |  | £ 5,000,000 |  | £ 5,000,000 |
Credit facilities, amount outstanding | £ |  |  |  | £ 0 |  | £ 0 |  | £ 0 |

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- Definition Debt Instrument, Maturity, Month and Year + References No definition available. + Details
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- Definition Ratio Of Indebtedness To Earnings Before Interest Tax Depreciation And Amortization + References No definition available. + Details
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- Definition Revolving credit facilities, number + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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- Definition Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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