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Non-Derivative Fair Value Measurements
3 Months Ended
Mar. 31, 2023
Fair Value Disclosures [Abstract]  
Non-Derivative Fair Value Measurements Non-Derivative Fair Value Measurements
Non-derivative fair value measurements consist of NEP's cash equivalents. The fair value of these financial assets is determined using the valuation techniques and inputs as described in Note 3 – Fair Value Measurement of Derivative Instruments. The fair value of money market funds that are included in cash and cash equivalents, current other assets and noncurrent other assets on NEP's condensed consolidated balance sheets is estimated using a market approach based on current observable market prices.
Recurring Non-Derivative Fair Value Measurements – NEP’s financial assets and liabilities and other fair value measurements made on a recurring basis by fair value hierarchy level are as follows:

March 31, 2023December 31, 2022
Level 1Level 2TotalLevel 1Level 2Total
(millions)
Assets:
Cash equivalents
$$— $$$— $
Total assets$$— $$$— $

Financial Instruments Recorded at Other than Fair Value – The carrying amounts and estimated fair values of other financial instruments recorded at other than fair value are as follows:

March 31, 2023December 31, 2022
Carrying
Value
Fair
Value
Carrying
Value
Fair
Value
(millions)
Long-term debt, including current maturities(a)
$5,345 $5,142 $5,288 $5,105 
____________________
(a)    At March 31, 2023 and December 31, 2022, approximately $5,123 million and $5,086 million, respectively, of the fair value is estimated using a market approach based on quoted market prices for the same or similar issues (Level 2); the balance is estimated using an income approach utilizing a discounted cash flow valuation technique, considering the current credit profile of the debtor (Level 3). At March 31, 2023 and December 31, 2022, approximately $1,453 million and $1,510 million, respectively, of the fair value relates to the 2020 convertible notes, the 2021 convertible notes and the 2022 convertible notes and is estimated using Level 2.