Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2020

Commitments and Contingencies Disclosure [Abstract]

Schedule of Change in Product Related Liabilities

The table below summarizes the change in product related liabilities in the Consolidated Balance Sheets.

	As of December 31
(Dollars in millions)	2020		2019
Reserve at beginning of the year	$	15	$	16
Change in reserve	11		1
Cash settlements	(8)		(2)
Translation difference	1		—
Reserve at end of the year	$	19	$	15