Credit Losses on Financial Instruments (Tables)

3 Months Ended

Mar. 31, 2024

Credit Loss [Abstract]

Activity in allowance for credit losses

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

	(Dollars in millions)
Beginning balance at December 31, 2023	$	13
Provision for expected losses	—
Write-offs charged against the allowance	(3)
Recoveries collected	1
Ending balance at March 31, 2024	$	11