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Severance
6 Months Ended
Jun. 30, 2020
Restructuring and Related Activities [Abstract]  
Severance SeverancePeriodically, we reduce our workforce and accrue liabilities for the related severance costs. These workforce reductions result primarily from the progression or completion of our post-acquisition integration plans, increased competitive pressures, cost reduction initiatives, process improvements through automation and reduced workload demands due to the loss of customers purchasing certain services.
Changes in our accrued liabilities for severance expenses were as follows:
Severance
 (Dollars in millions)
Balance at December 31, 2019$89  
Accrued to expense44  
Payments, net(54) 
Balance at June 30, 2020$79