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Commitments And Contingencies (Details) - USD ($)
$ in Millions
Aug. 04, 2018
Feb. 03, 2018
Jul. 29, 2017
Residual Value Guarantee of Leased Assets $ 104    
Lease guarantees, estimated fair value 3 $ 3 $ 1
Property Lease Guarantee [Member]      
Lease guarantees remaining after disposition of certain businesses $ 8