Credit Losses on Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2024

Credit Loss [Abstract]

Schedule of financing receivable, allowance for credit loss

The following table presents the activity of our allowance for credit losses by accounts receivable portfolio:

	Business		Mass Markets	Total
	(Dollars in millions)
Balance at December 31, 2021	$	88	26	114
Provision for expected losses	25		108	133
Write-offs charged against the allowance	(61)		(114)	(175)
Recoveries collected	10		6	16
Change in allowance in assets held for sale(1)	(5)		2	(3)
Balance at December 31, 2022	57		28	85
Provision for expected losses	35		65	100
Write-offs charged against the allowance	(62)		(65)	(127)
Recoveries collected	6		3	9
Balance at December 31, 2023	36		31	67
Provision for expected losses	26		46	72
Write-offs charged against the allowance	(32)		(58)	(90)
Recoveries collected	6		4	10
Balance at December 31, 2024	$	36	23	59

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(1)Represents changes in amounts classified as held for sale related to the divestitures of our Latin American and ILEC businesses on August 1, 2022 and October 3, 2022, respectively, and the inclusion of a $5 million allowance for credit losses classified as held for sale as of December 31, 2022 related to the divestiture of the EMEA business in 2023. See Note 2—Divestitures of the Latin American, ILEC and EMEA Businesses.