Commitments - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Jan. 28, 2017	Jan. 30, 2016	Jan. 31, 2015	Jan. 28, 2012
Commitments [Line Items]
Rental expense under operating leases for continuing operations	$ 1,435.2	$ 1,365.6	$ 1,321.6
Contingent rent paid	14.7	15.7	15.2
Sublease income	1.2	0.9	$ 0.8
Outstanding letters of credit issued for the purchase of inventory	41.2	$ 29.3
Other Long Term Liabilities
Commitments [Line Items]
Liabilities	$ 176.2
TJX Us And Canada | Maximum
Commitments [Line Items]
Operating leases term, years				10 years
TJX Us And Canada | Minimum
Commitments [Line Items]
Operating leases term, years				5 years
Options to extend for one of more five-year periods				1 year
TJX Europe | Maximum
Commitments [Line Items]
Operating leases term, years				15 years
Optional lease kick-out term, years				10 years