Goodwill And Intangible Assets (Narrative) (Details) - USD ($) $ in Millions |
6 Months Ended | |
|---|---|---|
Jan. 31, 2016 |
Feb. 01, 2015 |
|
| Finite-Lived Intangible Assets [Line Items] | ||
| Amortization of Intangible Assets | $ 10 | $ 9 |
| Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months | 20 | |
| Finite-Lived Intangible Assets, Amortization Expense, Year Two | 20 | |
| Finite Lived Intangible Assets, Amortization Expense, Year Three | 15 | |
| Finite Lived Intangible Assets, Amortization Expense, Year Four | 15 | |
| Finite Lived Intangible Assets, Amortization Expense, Year Five | $ 15 | |
| Minimum [Member] | ||
| Finite-Lived Intangible Assets [Line Items] | ||
| Finite-Lived Intangible Asset, Useful Life | 5 years | |
| Maximum [Member] | ||
| Finite-Lived Intangible Assets [Line Items] | ||
| Finite-Lived Intangible Asset, Useful Life | 20 years | |