Fair Value Disclosures
 6 Months Ended
Jul. 30, 2016
Fair Value Disclosures [Abstract]  
Fair Value Disclosures
Fair Value Disclosures
In determining fair value, the accounting standards establish a three level hierarchy for inputs used in measuring fair value, as follows:

•
Level 1 — Quoted prices in active markets for identical assets or liabilities.
•
Level 2 — Significant observable inputs other than quoted prices in active markets for similar assets and liabilities, such as quoted prices for identical or similar assets or liabilities in markets that are not active; or other inputs that are observable or can be corroborated by observable market data.
•
Level 3 — Significant unobservable inputs reflecting our own assumptions, consistent with reasonably available assumptions made by other market participants.
Cash Flow Hedges Measured on a Recurring Basis
The $37 million, $11 million and $30 million fair value of our cash flow hedges as of July 30, 2016, August 1, 2015 and January 30, 2016, respectively, are valued in the market using discounted cash flow techniques which use quoted market interest rates in discounted cash flow calculations which consider the instrument's term, notional amount, discount rate and credit risk. Significant inputs to the derivative valuation for interest rate swaps are observable in the active markets and are classified as Level 2 in the fair value measurement hierarchy.

Other Financial Instruments
Carrying values and fair values of financial instruments that are not carried at fair value in the unaudited Interim Consolidated Balance Sheets are as follows:
 
 
July 30, 2016
 
August 1, 2015
 
January 30, 2016
($ in millions)
Carrying
Amount
 
Fair
Value
 
Carrying
Amount
 
Fair
Value
 
Carrying
Amount
 
Fair
Value
Total debt, excluding unamortized debt issuance costs, capital leases and note payable
$
4,764

 
$
4,530

 
$
5,336

 
$
5,002

 
$
4,830

 
$
4,248


The fair value of long-term debt was estimated by obtaining quotes from brokers or was based on current rates offered for similar debt. As of July 30, 2016, August 1, 2015 and January 30, 2016, the fair values of cash and cash equivalents and accounts payable approximated their carrying values due to the short-term nature of these instruments. In addition, the fair values of capital lease commitments and the note payable approximated their carrying values. These items have been excluded from the table above.
Concentrations of Credit Risk
We have no significant concentrations of credit risk.