Commitments And Contingencies (Details) - USD ($) $ in Millions |
9 Months Ended | |
|---|---|---|
Oct. 29, 2016 |
Jan. 30, 2016 |
|
| Sale Leaseback Transaction, Other Information | 105 | |
| Property Lease Guarantee [Member] | ||
| Lease guarantees remaining after disposition of certain businesses | $ 18 | |
| Lease guarantees, estimated fair value | $ 3 | $ 3 |