Product Warranty (Tables)

12 Months Ended

Dec. 31, 2023

Commitments and Contingencies Disclosure [Abstract]

Schedule of Product Warranty Liability [Table Text Block]

The activity in warranty reserves is summarized in the following table (dollars in millions):

	Year Ended December 31,
	2023		2022
Beginning balance	$	8	$	7
Accrued to expense during the year	2		3
Reduced to other operating credits and charges	(1)		—
Payments made	(2)		(3)
Total warranty reserves	8		8
Current portion of warranty reserves	(2)		(2)
Long-term portion of warranty reserves	$	6	$	6