Severance (Tables)

12 Months Ended

Dec. 31, 2021

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, 2019	$	89
Accrued to expense	151
Payments, net	(137)
Balance at December 31, 2020	103
Accrued to expense	3
Payments, net	(70)
Balance at December 31, 2021	$	36