| Schedule of Derivative Liabilities at Fair Value [Table Text Block] |
Information regarding the gross amounts of our derivative instruments in the unaudited Interim Consolidated Balance Sheets is as follows: | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Asset Derivatives at Fair Value | | Liability Derivatives at Fair Value | ($ in millions) | Balance Sheet Location | | October 29, 2016 | | October 31, 2015 | | January 30, 2016 | | Balance Sheet Location | | October 29, 2016 | | October 31, 2015 | | January 30, 2016 | Derivatives designated as hedging instruments: | | | | | | | | | | | | | | | | Interest rate swaps | N/A | | $ | — |
| | $ | — |
| | $ | — |
| | Other accounts payable and accrued expenses | | $ | 2 |
| | $ | 2 |
| | $ | 2 |
| Interest rate swaps | N/A | | — |
| | — |
| | — |
| | Other liabilities | | 29 |
| | 19 |
| | 28 |
| Total derivatives designated as hedging instruments | | | $ | — |
| | $ | — |
| | $ | — |
| | | | $ | 31 |
| | $ | 21 |
| | $ | 30 |
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