Severance (Tables)

12 Months Ended

Dec. 31, 2023

Restructuring and Related Activities [Abstract]

Schedule of changes in accrued liabilities for severance expenses and leased real estate

Changes in our accrued liabilities for severance expenses were as follows:

	Severance
	(Dollars in millions)
Balance at December 31, 2021	$	36
Accrued to expense	12
Payments, net	(37)
Balance at December 31, 2022	11
Accrued to expense	74
Payments, net	(67)
Balance at December 31, 2023	$	18