Severance and Leased Real Estate (Tables)

12 Months Ended

Dec. 31, 2019

Restructuring and Related Activities [Abstract]

Schedule of restructuring reserve by type of cost

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

	Severance
	(Dollars in millions)
Balance at December 31, 2017 (Successor)	$	5
Accrued to expense	33
Payments, net	(19		)
Balance at December 31, 2018	$	19
Accrued to expense	6
Payments, net	(16		)
Balance at December 31, 2019	$	9