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Income Taxes - Additional Information (Detail) (USD $)
12 Months Ended
Jan. 31, 2015
Feb. 01, 2014
Feb. 02, 2013
Income Taxes [Line Items]      
Income tax provided on undistributed earnings on all other foreign subsidiaries $ 0us-gaap_DeferredTaxLiabilityNotRecognizedAmountOfUnrecognizedDeferredTaxLiabilityUndistributedEarningsOfForeignSubsidiaries    
Undistributed earnings of foreign subsidiaries 566,600,000tjx_UndistributedEarningsOfForeignSubsidiariesThatWouldNotImpactOnIncomeTaxes    
Valuation allowances 5,122,000us-gaap_DeferredTaxAssetsValuationAllowance 4,359,000us-gaap_DeferredTaxAssetsValuationAllowance  
Provision for income taxes 1,334,756,000us-gaap_IncomeTaxExpenseBenefit 1,182,093,000us-gaap_IncomeTaxExpenseBenefit 1,170,664,000us-gaap_IncomeTaxExpenseBenefit
Net unrecognized tax benefits 32,700,000tjx_UnrecognizedTaxBenefitsNetOfFederalTaxBenefit 26,200,000tjx_UnrecognizedTaxBenefitsNetOfFederalTaxBenefit 125,300,000tjx_UnrecognizedTaxBenefitsNetOfFederalTaxBenefit
Unrecognized tax benefits that would impact effective tax rates 34,800,000us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate 27,800,000us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate 129,000,000us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate
Interest and penalties expensed 1,900,000us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense 4,000,000us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense 4,700,000us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense
Accrued amounts for interest and penalties 10,100,000us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued 8,100,000us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued 38,600,000us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued
Possible decrease in unrecognized tax benefits that would reduce the provision for taxes on earnings, minimum 0us-gaap_SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleEstimatedRangeOfChangeLowerBound    
Possible decrease in unrecognized tax benefits that would reduce the provision for taxes on earnings, maximum 14,400,000us-gaap_SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleEstimatedRangeOfChangeUpperBound    
Prior Year Tax Benefit      
Income Taxes [Line Items]      
Provision for income taxes (80,000,000)us-gaap_IncomeTaxExpenseBenefit
/ us-gaap_TaxPeriodAxis
= us-gaap_EarliestTaxYearMember
   
State Net Operating Loss Carryforwards      
Income Taxes [Line Items]      
State net operating loss carryforwards 61,500,000us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal
/ tjx_IncomeTaxAxis
= tjx_StateNetOperatingLossCarryforwardsMember
35,900,000us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal
/ tjx_IncomeTaxAxis
= tjx_StateNetOperatingLossCarryforwardsMember
 
Valuation allowances 5,100,000us-gaap_DeferredTaxAssetsValuationAllowance
/ tjx_IncomeTaxAxis
= tjx_StateNetOperatingLossCarryforwardsMember
4,400,000us-gaap_DeferredTaxAssetsValuationAllowance
/ tjx_IncomeTaxAxis
= tjx_StateNetOperatingLossCarryforwardsMember
 
State Net Operating Loss Carryforwards | Minimum      
Income Taxes [Line Items]      
Net operating loss carryforwards, expiration year 2016    
State Net Operating Loss Carryforwards | Maximum      
Income Taxes [Line Items]      
Net operating loss carryforwards, expiration year 2034    
Foreign Net Operating Loss Carryforwards      
Income Taxes [Line Items]      
Foreign net operating loss carryforwards 48,300,000us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsForeign
/ tjx_IncomeTaxAxis
= tjx_ForeignNetOperatingLossCarryforwardsMember
77,100,000us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsForeign
/ tjx_IncomeTaxAxis
= tjx_ForeignNetOperatingLossCarryforwardsMember
 
Foreign net operating loss carryforwards subject to expiration $ 2,800,000us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsSubjectToExpiration
/ tjx_IncomeTaxAxis
= tjx_ForeignNetOperatingLossCarryforwardsMember
   
Foreign Net Operating Loss Carryforwards | Minimum      
Income Taxes [Line Items]      
Net operating loss carryforwards, expiration year 2016    
Foreign Net Operating Loss Carryforwards | Maximum      
Income Taxes [Line Items]      
Net operating loss carryforwards, expiration year 2018