Committments and Contingent Liabilities (Tables)

12 Months Ended

Dec. 31, 2024

Commitments and Contingencies Disclosure [Abstract]

Schedule of Loss Contingencies by Contingency [Table Text Block]

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

	December 31,
	2024		2023
Environmental reserves	$	28	$	26
Other reserves	—		—
Total contingencies	28		26
Current portion1	(1)		(1)
Long-term portion	$	27	$	25

1The 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,
	2024		2023
Beginning balance	$	26	$	27
Adjustments to expense during the year (other operating credits charges, net and cost of sales)	2		—
Payments made	(1)		(1)
Ending balance	$	28	$	26