Segment Information - Schedule of (Loss)/Income Before Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
(Dollars in millions)	$ (137)	$ (48)	$ (265)	$ (64)
Interest and other non-operating items, net	3	1	6	1
Loss from equity method investment	(18)	(16)	(35)	(30)
Loss before income taxes	(152)	(63)	(294)	(93)
Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
(Dollars in millions)	(118)	(35)	(228)	(44)
Electronics | Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
(Dollars in millions)	(101)	(31)	(191)	(32)
Brake Systems | Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
(Dollars in millions)	(17)	(4)	(37)	(12)
Corporate and other
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
(Dollars in millions)	$ (19)	$ (13)	$ (37)	$ (20)