Fair Value Disclosures
 3 Months Ended
May 04, 2019
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 fair value of our cash flow hedges are valued in the market using discounted cash flow techniques, which use quoted market interest rates in discounted cash flow calculations that 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 Non-Financial Assets Measured on a Non-Recurring Basis
In connection with the Company announcing its plan to close underperforming stores in 2019, long-lived assets held and used with a carrying value of $22 million were written down to their fair value of $8 million, resulting in asset impairment charges of $14 million in the first quarter of 2019. Additionally, in connection with the adoption of the new lease accounting standard, right-of-use assets of $58 million were written down to their fair value of $19 million. The fair value was determined based on comparable market values of similar properties or on a rental income approach and the significant inputs related to valuing the store related assets 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: 
 
May 4, 2019
 
May 5, 2018
 
February 2, 2019
($ in millions)
Carrying
Amount
 
Fair
Value
 
Carrying
Amount
 
Fair
Value
 
Carrying
Amount
 
Fair
Value
Total debt, excluding unamortized debt issuance costs, finance leases and note payable
$
3,963

 
$
2,833

 
$
4,238

 
$
3,712

 
$
3,856

 
$
2,579


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 May 4, 2019, May 5, 2018 and February 2, 2019, the fair values of cash and cash equivalents and accounts payable approximated their carrying values due to the short-term nature of these instruments.
Concentrations of Credit Risk
We have no significant concentrations of credit risk.