Product Warranty (Tables)

12 Months Ended

Dec. 31, 2022

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,
	2022		2021
Beginning balance	$	7	$	8
Accrued to expense during the year	3		1
Payments made	(3)		(2)
Total warranty reserves	8		7
Current portion of warranty reserves	(2)		(2)
Long-term portion of warranty reserves	$	6	$	6