Provision (Credit) For Computer Intrusion Related Costs (Details) (USD $) In Millions	Jul. 30, 2011	Jul. 31, 2010
Provision (Credit) For Computer Intrusion Related Costs
Reserve balance	$ 16.8	$ 19.6

Name:

tjx_ReserveForItsEstimateOfTotalProbableLossesArisingFromUnauthorizedIntrusionIntoPortionsOfItsComputerSystems

Namespace Prefix:

tjx

Data Type:

xbrli:monetaryItemType

Balance Type:

credit

Period Type:

instant