Credit Losses on Financial Instruments (Tables)

6 Months Ended

Jun. 30, 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 for the six months ended June 30, 2024:

	Business		Mass Markets	Total
	(Dollars in millions)
As of December 31, 2023	$	36	31	67
Provision for expected losses	13		26	39
Write-offs charged against the allowance	(19)		(31)	(50)
Recoveries collected	4		2	6
Ending balance at June 30, 2024	$	34	28	62