Financial Instruments - Impact of Derivative Financial Instruments on Statement of Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Nov. 02, 2019	Nov. 03, 2018	Nov. 02, 2019	Nov. 03, 2018
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in income	$ (5,410)	$ 12,425	$ 10,047	$ 84,930
Intercompany balances, primarily debt and related interest | Selling, General And Administrative Expenses | Fair Value Hedges
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in income	7,238	672	526	(3,538)
Intercompany receivable | Selling, General And Administrative Expenses | Economic Hedges For Which Hedge Accounting Was Not Elected
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in income	0	0	3,257	18,823
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	529	1,572	(2,103)	7,530
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	5,144	1,718	944	1,024
International lease liabilities | 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	301	0	(1,113)	0
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	$ (18,622)	$ 8,463	$ 8,536	$ 61,091