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Income Taxes (Reconciliation Of Statutory To Effective Tax Rate) (Details)
12 Months Ended
Jan. 31, 2015
Feb. 01, 2014
Feb. 02, 2013
Income Tax Disclosure [Abstract]      
Statutory rate 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
State and local income taxes, net of federal income taxes 3.80%us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes 3.60%us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes 3.60%us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes
Non-deductible acquisition-related items 0.90%jwn_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseAcquisitionRelated 0.00%jwn_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseAcquisitionRelated 0.00%jwn_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseAcquisitionRelated
Other, net (0.50%)us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments (0.30%)us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments (0.60%)us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments
Effective tax rate 39.20%us-gaap_EffectiveIncomeTaxRateContinuingOperations 38.30%us-gaap_EffectiveIncomeTaxRateContinuingOperations 38.00%us-gaap_EffectiveIncomeTaxRateContinuingOperations