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Commitments And Contingencies (Details) - USD ($)
$ in Millions
Apr. 29, 2017
Jan. 28, 2017
Apr. 30, 2016
Sale Leaseback Transaction, Other Information $ 133    
Lease guarantees, estimated fair value 1 $ 1 $ 3
Provision for Loss on Contracts 9    
Property Lease Guarantee [Member]      
Lease guarantees remaining after disposition of certain businesses $ 13