Financial Instruments - Impact of Derivative Financial Instruments on Statement of Income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Aug. 03, 2019	Aug. 04, 2018	Aug. 03, 2019	Aug. 04, 2018
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in income	$ (5,538)	$ 38,005	$ 15,457	$ 72,505
Intercompany Balances, Primarily And Related Interest | Selling, General And Administrative Expenses | Fair Value Hedges
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in income	(10,345)	(2,418)	(6,712)	(4,210)
Intercompany Dividends | 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	18,823	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	(6,319)	1,005	(2,632)	5,958
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	(6,351)	(576)	(4,200)	(694)
Lease liability in TJX International: | 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	108	0	(1,414)	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	$ 17,369	$ 21,171	$ 27,158	$ 52,628