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Severance and Leased Real Estate (Tables)
9 Months Ended
Sep. 30, 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, 2018
$
87

Accrued to expense
10

Payments, net
(71
)
Balance at September 30, 2019
$
26