Credit Losses on Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2025

Credit Loss [Abstract]

Activity on allowance for credit losses

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

	Business		Mass Markets	Total
	(Dollars in millions)
Balance as of December 31, 2022	$	20	16	36
Provision for expected losses	20		46	66
Write-offs charged against the allowance	(26)		(43)	(69)
Recoveries collected	—		1	1
Balance as of December 31, 2023	14		20	34
Provision for expected losses	9		36	45
Write-offs charged against the allowance	(10)		(42)	(52)
Recoveries collected	—		2	2
Balance as of December 31, 2024	13		16	29
Provision for expected losses	9		30	39
Write-offs charged against the allowance	(11)		(21)	(32)
Recoveries collected	—		2	2
Change in allowance in assets held for sale(1)	—		(1)	(1)
Balance as of December 31, 2025	$	11	26	37

(1)Represents changes in amounts classified as held for sale associated with the disposal group related to the recently completed Mass Markets Fiber-to-the-Home business in the Territory. See Note 2—Divestiture.