Basis of Presentation and Summary of Accounting Policies - Schedule of Goodwill by Segment (Details) - USD ($) $ in Millions	12 Months Ended
	Feb. 03, 2024	Jan. 28, 2023
Goodwill [Roll Forward]
Beginning balance	$ 97	$ 97
Effect of exchange rate changes on goodwill	(2)	0
Ending balance	95	97
Marmaxx
Goodwill [Roll Forward]
Beginning balance	70	70
Effect of exchange rate changes on goodwill	0	0
Ending balance	70	70
TJX Canada
Goodwill [Roll Forward]
Beginning balance	2	2
Effect of exchange rate changes on goodwill	0	0
Ending balance	2	2
TJX International
Goodwill [Roll Forward]
Beginning balance	25	25
Effect of exchange rate changes on goodwill	(2)	0
Ending balance	$ 23	$ 25