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Fair Value Measurements (Tables)
9 Months Ended
Sep. 30, 2023
Fair Value Disclosures [Abstract]  
Fair Value Measurements, Recurring and Nonrecurring
The following tables provide the valuation hierarchy classification of assets and liabilities that are carried at fair value and measured on a recurring basis in our Condensed Consolidated Balance Sheet:
September 30, 2023
(dollars in millions)TotalLevel 1Level 2Level 3
Recurring fair value measurements:
Marketable securities held in trusts$737 $675 $62 $ 
Derivative assets151  151  
Derivative liabilities274  274  
December 31, 2022
(dollars in millions)TotalLevel 1Level 2Level 3
Recurring fair value measurements:
Marketable securities held in trusts$774 $713 $61 $— 
Derivative assets84 — 84 — 
Derivative liabilities386 — 386 — 
Fair Value, by Balance Sheet Grouping
The following table provides carrying amounts and fair values of financial instruments that are not carried at fair value in our Condensed Consolidated Balance Sheet:
 September 30, 2023December 31, 2022
(dollars in millions)Carrying
Amount
Fair
Value
Carrying
Amount
Fair
Value
Customer financing notes receivable$88 $82 $169 $161 
Long-term debt (excluding finance leases)33,995 29,125 31,201 28,049 
The following tables provide the valuation hierarchy classification of assets and liabilities that are not carried at fair value in our Condensed Consolidated Balance Sheet:
September 30, 2023
(dollars in millions)TotalLevel 1Level 2Level 3
Customer financing notes receivable$82 $ $82 $ 
Long-term debt (excluding finance leases)29,125  29,080 45 
December 31, 2022
(dollars in millions)TotalLevel 1Level 2Level 3
Customer financing notes receivable$161 $— $161 $— 
Long-term debt (excluding finance leases)28,049 — 28,003 46