Segment Information - Financial Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2021	Aug. 01, 2020	Jul. 31, 2021	Aug. 01, 2020
Segment Reporting Information [Line Items]
Total net sales	$ 12,077,063	$ 6,667,575	$ 22,163,724	$ 11,076,463
General corporate expense	2,223,692	1,527,768	4,288,684	2,841,688
Loss on early extinguishment of debt	242,248	0	242,248	0
Interest expense, net	28,661	57,336	73,349	80,687
Income (loss) before income taxes	1,054,332	(92,019)	1,775,678	(1,434,867)
Operating segments
Segment Reporting Information [Line Items]
Total segment profit (loss)	1,488,843	88,750	2,415,319	(1,130,420)
Operating segments | Marmaxx
Segment Reporting Information [Line Items]
Total net sales	7,348,931	3,959,340	13,989,417	6,657,119
Total segment profit (loss)	1,014,175	100,471	1,839,030	(609,198)
Operating segments | HomeGoods
Segment Reporting Information [Line Items]
Total net sales	2,083,261	1,235,973	4,225,017	1,995,838
Total segment profit (loss)	182,526	97,576	434,128	(56,127)
Operating segments | TJX Canada
Segment Reporting Information [Line Items]
Total net sales	1,021,549	591,918	1,787,085	971,554
Total segment profit (loss)	118,686	21,965	190,263	(75,216)
Operating segments | TJX International
Segment Reporting Information [Line Items]
Total net sales	1,623,322	880,344	2,162,205	1,451,952
Total segment profit (loss)	173,456	(131,262)	(48,102)	(389,879)
Corporate
Segment Reporting Information [Line Items]
General corporate expense	$ 163,602	$ 123,433	$ 324,044	$ 223,760