Fair Value of Financial Instruments (Tables)

6 Months Ended

Jun. 30, 2025

Fair Value Disclosures [Abstract]

Schedule of Fair Value Measurement Inputs and Valuation Techniques

The three input levels in the hierarchy of fair value measurements are defined by the FASB generally as follows:

Input Level	Description of Input
Level 1	Observable inputs such as quoted market prices in active markets.
Level 2	Inputs other than quoted prices in active markets that are either directly or indirectly observable.
Level 3	Unobservable inputs in which little or no market data exists.

Schedule of Carrying Amounts and Estimated Fair Values of Financial Assets and Liabilities

The following table presents the carrying amounts and estimated fair values of our financial assets and liabilities as of June 30, 2025 and December 31, 2024:

		June 30, 2025			December 31, 2024
	Input Level	Carrying Amount		Fair Value	Carrying Amount	Fair Value
		(Dollars in millions)
Long-term debt, excluding finance lease and other obligations	2	$	17,655	17,530	17,652	17,127
Indemnifications related to the sale of the Latin American business(1)	3	87		84	87	84

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(1)Nonrecurring fair value is measured as of August 1, 2022.