Product Warranty (Tables)

9 Months Ended

Sep. 30, 2021

Commitments and Contingencies Disclosure [Abstract]

Schedule of Product Warranty Liability [Table Text Block]

The activity in warranty reserves for the three and nine months ended September 30, 2021, and 2020, is summarized in the following table:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2021		2020		2021		2020
Beginning balance	$	8	$	8	$	8	$	8
Accrued to expense	—		—		1		1
Payments made	—		—		(1)		(1)
Total warranty reserves	8		8		8		8
Current portion of warranty reserves (included in Other current liabilities)	(2)		(2)		(2)		(2)
Long-term portion of warranty reserves (included in Other long-term liabilities)	$	6	$	6	$	6	$	6