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Fair Value Measurements | 6 Months Ended
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Jul. 29, 2017
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] |
Fair Value Measurements | Fair Value Measurements The following table shows the Company's financial assets that are required to be measured at fair value on a recurring basis, by level within the hierarchy as defined by applicable accounting standards:
| July 29, 2017 |  | July 30, 2016
|  |  | Fair Value Measurements |  |  |  | Fair Value Measurements
| Total |  | Quoted Prices in Active Markets for Identical Assets (Level 1) |  | Significant Observable Inputs (Level 2) |  | Significant Unobservable Inputs (Level 3) |  | Total |  | Quoted Prices in Active Markets for Identical Assets (Level 1) |  | Significant Observable Inputs (Level 2) |  | Significant Unobservable Inputs (Level 3)
| (millions)
Marketable equity and debt securities | $ | 99 |  |  | $ | 22 |  |  | $ | 77 |  |  | $ | — |  |  | $ | 141 |  |  | $ | 18 |  |  | $ | 123 |  |  | $ | — |
Other financial instruments not measured at fair value on a recurring basis include cash and cash equivalents, receivables, short-term debt, merchandise accounts payable, accounts payable and accrued liabilities and long-term debt. With the exception of long-term debt, the carrying amount of these financial instruments approximates fair value because of the short maturity of these instruments. The fair values of long-term debt, excluding capitalized leases, are generally estimated based on quoted market prices for identical or similar instruments, and are classified as Level 2 measurements within the hierarchy as defined by applicable accounting standards. The following table shows the estimated fair value of the Company's long-term debt:
| July 29, 2017 |  | July 30, 2016
| Notional Amount |  | Carrying Amount |  | Fair Value |  | Notional Amount |  | Carrying Amount |  | Fair Value
| (millions)
Long-term debt | $ | 6,209 |  |  | $ | 6,274 |  |  | $ | 6,217 |  |  | $ | 6,461 |  |  | $ | 6,540 |  |  | $ | 6,822 |

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- Definition The entire disclosure of the fair value measurement of assets and liabilities, which includes financial instruments measured at fair value that are classified in shareholders' equity, which may be measured on a recurring or nonrecurring basis. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -URI http://asc.fasb.org/topic&trid=2155941 + Details
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