Fair Value of Financial Instruments (Tables)

3 Months Ended

Mar. 31, 2024

Fair Value Disclosures [Abstract]

Schedule of carrying amounts and estimated fair values of long-term debt, excluding capital lease obligations, and input levels to determine fair values

The following table presents the carrying amounts and estimated fair values of our financial liabilities as of March 31, 2024 and December 31, 2023, as well as the input level used to determine the fair values indicated below:

		March 31, 2024			December 31, 2023
	Input Level	Carrying Amount		Fair Value	Carrying Amount	Fair Value
		(Dollars in millions)
Liabilities-Long-term debt, excluding finance leases	2	$	9,935	8,683	8,724	6,418
Indemnifications related to the sale of the Latin American business(1)	3	86		86	86	86

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