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Commitments And Contingent Liabilities (Narrative) (Details) (Manhattan full-line store [Member], USD $)
In Millions, unless otherwise specified
May 02, 2015
Manhattan full-line store [Member]
 
Property Assets Subject to Lien [Line Items]  
Amount of property assets subject to lien $ 125jwn_AmountOfPropertyAssetsSubjectToLien
/ us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis
= jwn_ManhattanFulllineStoreMember