Summary of Significant Accounting Policies Accounts payable and accrued liabilities (Tables)

12 Months Ended

Dec. 31, 2019

Schedule of Accounts Payable and Accrued Liabilities [Table Text Block]

Accounts payable and accrued liabilities were as follows:

	December 31,
Dollar amounts in millions	2019		2018
Accounts payable	$	127	$	116
Salaries and wages payable	48		58
Accrued severance	4		6
Taxes other than income taxes	7		4
Accrued rebates	34		30
Current portion of operating lease liabilities	8		—
Other accrued liabilities	14		20
Total Accounts payable and accrued liabilities	$	242	$	234