Segment Information - Financial Information (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Aug. 04, 2018	Jul. 29, 2017	Aug. 04, 2018	Jul. 29, 2017
Segment Reporting Information [Line Items]
Net sales	$ 9,331,115	$ 8,357,700	$ 18,019,835	$ 16,141,724
Segment profit	1,159,831	1,010,422	2,223,657	1,959,419
General corporate expense	164,245	109,045	268,365	215,693
Interest expense, net	3,029	9,677	7,177	19,518
Income before provision for income taxes	992,557	891,700	1,948,115	1,724,208
Marmaxx
Segment Reporting Information [Line Items]
Net sales	5,847,721	5,284,639	11,228,639	10,251,774
Segment profit	830,315	746,881	1,580,771	1,434,046
HomeGoods
Segment Reporting Information [Line Items]
Net sales	1,327,346	1,156,398	2,596,677	2,277,667
Segment profit	142,090	141,345	289,450	293,437
TJX Canada
Segment Reporting Information [Line Items]
Net sales	937,736	832,026	1,791,572	1,570,797
Segment profit	138,735	83,229	263,919	186,109
TJX International
Segment Reporting Information [Line Items]
Net sales	1,218,312	1,084,637	2,402,947	2,041,486
Segment profit	$ 48,691	$ 38,967	$ 89,517	$ 45,827

General corporate expenses.

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