Cover Page	3 Months Ended
	May 02, 2020 shares
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	May 02, 2020
Document Transition Report	false
Entity File Number	1-4908
Entity Registrant Name	The TJX Companies, Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	04-2207613
Entity Address, Address Line One	770 Cochituate Road
Entity Address, City or Town	Framingham
Entity Address, State or Province	MA
Entity Address, Postal Zip Code	01701
City Area Code	508
Local Phone Number	390-1000
Title of 12(b) Security	Common Stock, par value $1.00 per share
Trading Symbol	TJX
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding	1,197,877,094
Amendment Flag	false
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q1
Entity Central Index Key	0000109198
Current Fiscal Year End Date	--01-30