Revenue (Tables)

3 Months Ended

Mar. 31, 2019

Revenue from Contract with Customer [Abstract]

Revenue disaggregated by primary region and products of revenue recognition

In the following tables, revenue is disaggregated by primary region and products of revenue recognition.

Net Sales by Region

(Dollars in millions)	Three Months Ended March 31, 2019						Three Months Ended March 31, 2018
	Electronics		Brake Systems		Total		Electronics		Brake Systems		Total
Asia	$	89	$	72	$	161	$	112	$	99	$	211
Americas	154		15		169		179		14		193
Europe	164		—		164		190		—		190
Total	$	407	$	87	$	494	$	481	$	114	$	594

Net Sales by Products

(Dollars in millions)	Three Months Ended March 31, 2019						Three Months Ended March 31, 2018
	Electronics		Brake Systems		Total		Electronics		Brake Systems		Total
Restraint Control Systems	$	215	$	—	$	215	$	268	$	—	$	268
Active Safety products	192		—		192		213		—		213
Brake Systems	—		87		87		—		114		114
Total net sales	$	407	$	87	$	494	$	481	$	114	$	594