Fair Value of Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2024

Fair Value Disclosures [Abstract]

Schedule of the three input levels in the hierarchy of fair value measurements

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 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 following financial assets and liabilities as of December 31, 2024 and 2023, as well as the input level used to determine the fair values indicated below:

		As of December 31, 2024			As of December 31, 2023
	Input Level	Carrying Amount		Fair Value	Carrying Amount	Fair Value
		(Dollars in millions)
Long-term debt, excluding finance lease and other obligations	2	$	17,652	17,127	19,703	13,304
Indemnifications related to the sale of the Latin American business(1)	3	87		84	86	86

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(1)Non-recurring fair value recorded in connection with the sale of our Latin American business was measured as of August 1, 2022. See Note 2—Divestitures of the Latin American, ILEC and EMEA Businesses for further details.