Fair Value Measurements Fair Value Measurements Narrative (Details) - USD ($) $ in Millions |
May. 01, 2016 |
Aug. 02, 2015 |
|---|---|---|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
| Cash and Cash Equivalents, at Carrying Value | $ 64 | $ 39 |
| Long-term Debt | 2,552 | 2,552 |
| Fair Value, Inputs, Level 2 [Member] | ||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
| Cash and Cash Equivalents, Fair Value Disclosure | 64 | 39 |
| Long-term Debt, Fair Value | $ 2,686 | $ 2,623 |