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Financial Instruments - Impact of Derivative Financial Instruments on Statement of Income (Loss) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
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Jul. 31, 2021 | Aug. 01, 2020 | Jul. 31, 2021 | Aug. 01, 2020
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Gain (loss) recognized in income / (loss) | $ 37,830 | $ (45,784) | $ 32,685 | $ (25,528)
Intercompany balances, primarily debt related: | Selling, general and administrative expenses | Fair Value Hedges |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Gain (loss) recognized in income / (loss) | 15,417 | (38,060) | 12,553 | (43,233)
Diesel fuel contracts | Cost of sales, including buying and occupancy costs | Economic Hedges For Which Hedge Accounting Was Not Elected |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Gain (loss) recognized in income / (loss) | 7,276 | 10,123 | 20,846 | (12,731)
Intercompany billings in TJX International, primarily merchandise related | Cost of sales, including buying and occupancy costs | Economic Hedges For Which Hedge Accounting Was Not Elected |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Gain (loss) recognized in income / (loss) | 3,427 | (2,039) | 3,545 | (3,891)
Merchandise purchase commitments | Cost of sales, including buying and occupancy costs | Economic Hedges For Which Hedge Accounting Was Not Elected |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Gain (loss) recognized in income / (loss) | $ 11,710 | $ (15,808) | $ (4,259) | $ 34,327

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- Definition Amount of increase (decrease) in the fair value of derivatives recognized in the income statement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5618551-113959 + Details
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