New Accounting Pronouncement Revenue Recognition (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|---|
Aug. 04, 2018 |
Jul. 29, 2017 |
Aug. 04, 2018 |
Jul. 29, 2017 |
Feb. 03, 2018 |
|
| New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||
| Net Sales | $ 2,984 | $ 2,755 | $ 5,610 | $ 5,192 | |
| Accounting Standards Update 2014-09 [Member] | Adjustments for New Accounting Pronouncement [Member] | |||||
| New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||
| Cumulative Effect on Retained Earnings, Net of Tax | $ 28 | ||||
| Accounting Standards Update 2014-09 [Member] | Difference between Revenue Guidance in Effect before and after Topic 606 [Member] | |||||
| New Accounting Pronouncements or Change in Accounting Principle [Line Items] | |||||
| Net Sales | 48 | 73 | |||
| Accrued Returns Reserve Current | $ 4 | $ 4 | |||