Committments and Contingent Liabilities (Tables)

12 Months Ended

Dec. 31, 2023

Commitments and Contingencies Disclosure [Abstract]

Schedule of Loss Contingencies by Contingency [Table Text Block]

maintain reserves for various contingent liabilities as follows (dollars in millions):

	December 31,
	2023		2022
Environmental reserves	$	26	$	27
Other reserves	—		—
Total contingencies	26		27
Current portion*	(1)		(1)
Long-term portion	$	25	$	26

*The current portion of the contingency reserve is included in accounts payable and accrued liabilities on our Consolidated Balance Sheets.

Schedule of Environmental Loss Contingencies by Site [Table Text Block]

The activity in our reserve for estimated environmental loss contingency reserves is summarized in the following table (dollars in millions):

	Year Ended December 31,
	2023		2022
Beginning balance	$	27	$	25
Adjustments to expense during the year (other operating credits charges, net and cost of sales)	—		2
Adjustments to amounts to be paid by a third party	—		2
Payments made	(1)		(2)
Ending balance	$	26	$	27