Segment Information - Financial Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2020	Nov. 02, 2019	Oct. 31, 2020	Nov. 02, 2019
Segment Reporting Information [Line Items]
Total net sales	$ 10,117,289	$ 10,451,334	$ 21,193,752	$ 29,510,515
General corporate expense	1,986,128	1,885,923	4,827,816	5,319,659
Interest expense, net	52,884	3,259	133,571	6,973
Income (loss) before income taxes	1,015,992	1,122,119	(418,875)	3,079,908
Marmaxx
Segment Reporting Information [Line Items]
Total net sales	5,784,753	6,353,987	12,441,872	18,262,444
HomeGoods
Segment Reporting Information [Line Items]
Total net sales	1,875,641	1,582,411	3,871,479	4,404,112
TJX Canada
Segment Reporting Information [Line Items]
Total net sales	1,027,828	1,081,522	1,999,382	2,896,717
TJX International
Segment Reporting Information [Line Items]
Total net sales	1,429,067	1,433,414	2,881,019	3,947,242
Operating segments
Segment Reporting Information [Line Items]
Total segment profit	1,219,375	1,263,303	88,955	3,474,417
Operating segments | Marmaxx
Segment Reporting Information [Line Items]
Total segment profit	665,070	820,430	55,872	2,471,622
Operating segments | HomeGoods
Segment Reporting Information [Line Items]
Total segment profit	291,209	173,212	235,082	438,939
Operating segments | TJX Canada
Segment Reporting Information [Line Items]
Total segment profit	176,520	170,264	101,304	385,513
Operating segments | TJX International
Segment Reporting Information [Line Items]
Total segment profit	86,576	99,397	(303,303)	178,343
Corporate
Segment Reporting Information [Line Items]
General corporate expense	$ 150,499	$ 137,925	$ 374,259	$ 387,536