Financial Instruments - Impact of Derivative Financial Instruments on Statements of Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 30, 2021	Feb. 01, 2020	Feb. 02, 2019
Derivative Instruments, Gain (Loss) [Line Items]
(Loss) gain recognized in income	$ (74,184)	$ 10,288	$ 79,066
Intercompany balances, primarily debt and related interest | Fair value hedges: | Selling, general and administrative expenses
Derivative Instruments, Gain (Loss) [Line Items]
(Loss) gain recognized in income	(59,829)	4,788	(2,674)
Intercompany receivable | Economic hedges for which hedge accounting was not elected: | Selling, general and administrative expenses
Derivative Instruments, Gain (Loss) [Line Items]
(Loss) gain recognized in income	0	3,257	18,823
Diesel fuel contracts | Economic hedges for which hedge accounting was not elected: | Cost of sales, including buying and occupancy costs
Derivative Instruments, Gain (Loss) [Line Items]
(Loss) gain recognized in income	(5,638)	(9,780)	1,373
Intercompany billings in TJX International, primarily merchandise related: | Economic hedges for which hedge accounting was not elected: | Cost of sales, including buying and occupancy costs
Derivative Instruments, Gain (Loss) [Line Items]
(Loss) gain recognized in income	(4,249)	2,652	1,137
International lease liabilities | Economic hedges for which hedge accounting was not elected: | Cost of sales, including buying and occupancy costs
Derivative Instruments, Gain (Loss) [Line Items]
(Loss) gain recognized in income	0	(1,113)	0
Merchandise purchase commitments: | Economic hedges for which hedge accounting was not elected: | Cost of sales, including buying and occupancy costs
Derivative Instruments, Gain (Loss) [Line Items]
(Loss) gain recognized in income	$ (4,468)	$ 10,484	$ 60,407