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Debt and Credit Facilities Long Term Debt (Tables) | 9 Months Ended
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Oct. 31, 2015
Debt Disclosure [Abstract] |
Long Term Debt | Total long-term debt, less current portion, is as follows:
($ in millions) | October 31, 2015 |  | January 31, 2015 |  | November 1, 2014
Notes | $ | 1,248 |  |  | $ | 1,247 |  |  | $ | 1,247 |
Japan Term Loan | 104 |  |  | 106 |  |  | 133 |
Total long-term debt | 1,352 |  |  | 1,353 |  |  | 1,380 |
Less: Current portion | (21 | ) |  | (21 | ) |  | (22 | )
Total long-term debt, less current portion | $ | 1,331 |  |  | $ | 1,332 |  |  | $ | 1,358 |

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