Segment Information - Financial Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Aug. 03, 2024	Jul. 29, 2023	Aug. 03, 2024	Jul. 29, 2023
Segment Reporting Information [Line Items]
Total net sales	$ 13,468	$ 12,758	$ 25,947	$ 24,541
General corporate expense	2,666	2,559	5,066	4,797
Interest (income) expense, net	(46)	(38)	(96)	(75)
Income before income taxes	1,468	1,327	2,858	2,535
Operating segments
Segment Reporting Information [Line Items]
Total segment profit	1,642	1,483	3,135	2,810
Operating segments | Marmaxx
Segment Reporting Information [Line Items]
Total net sales	8,445	7,903	16,195	15,269
Total segment profit	1,191	1,084	2,288	2,112
Operating segments | HomeGoods
Segment Reporting Information [Line Items]
Total net sales	2,101	2,011	4,180	3,977
Total segment profit	191	175	389	319
Operating segments | TJX Canada
Segment Reporting Information [Line Items]
Total net sales	1,244	1,223	2,357	2,261
Total segment profit	187	192	324	309
Operating segments | TJX International
Segment Reporting Information [Line Items]
Total net sales	1,678	1,621	3,215	3,034
Total segment profit	73	32	134	70
Corporate
Segment Reporting Information [Line Items]
General corporate expense	$ 220	$ 194	$ 373	$ 350