Financing Activities (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | |||
|---|---|---|---|---|---|
Feb. 03, 2018 |
Oct. 28, 2017 |
Oct. 29, 2016 |
Oct. 28, 2017 |
Oct. 29, 2016 |
|
| Extinguishment of debt | $ 247 | ||||
| Extinguishment of debt cost | $ 257 | 257 | |||
| Net premiums on early retirement of debt | $ 0 | $ 0 | 1 | $ 0 | |
| 7.45% senior debentures due 2017 | |||||
| Extinguishment of debt | $ 300 | $ 0 | |||
| Debt Instrument, Interest Rate, Stated Percentage | 7.45% | 7.45% | |||
| Subsequent Event [Member] | |||||
| Extinguishment of debt | $ 400 | ||||
| Minimum [Member] | Subsequent Event [Member] | |||||
| Debt Instrument, Interest Rate, Stated Percentage | 6.38% | ||||
| Maximum [Member] | Subsequent Event [Member] | |||||
| Debt Instrument, Interest Rate, Stated Percentage | 10.25% | ||||