Severance and Leased Real Estate (Tables)

12 Months Ended

Dec. 31, 2019

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, 2017	$	33
Accrued to expense	205
Payments, net	(151		)
Balance at December 31, 2018	87
Accrued to expense	89
Payments, net	(87		)
Balance at December 31, 2019	$	89