Revenue

9 Months Ended

Sep. 30, 2019

Revenue from Contract with Customer [Abstract]

Revenue

Revenue

Disaggregation of revenue

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

Net Sales by Region

	Three Months Ended September 30, 2019						Three Months Ended September 30, 2018
(Dollars in millions)	Electronics		Brake Systems		Total		Electronics		Brake Systems		Total
Asia	$	80	$	77	$	157	$	98	$	85	$	183
Americas	133		14		147		166		15		181
Europe	158		—		158		163		—		163
Total net sales	$	371	$	91	$	462	$	426	$	100	$	526

Net Sales by Region

	Nine Months Ended September 30, 2019						Nine Months Ended September 30, 2018
(Dollars in millions)	Electronics		Brake Systems		Total		Electronics		Brake Systems		Total
Asia	$	259	$	229	$	488	$	314	$	280	$	594
Americas	432		46		478		517		45		562
Europe	480		—		480		537		—		537
Total net sales	$	1,171	$	275	$	1,446	$	1,367	$	325	$	1,692

Net Sales by Products

	Three Months Ended September 30, 2019						Three Months Ended September 30, 2018
(Dollars in millions)	Electronics		Brake Systems		Total		Electronics		Brake Systems		Total
Restraint Control Systems	$	193	$	—	$	193	$	226	$	—	$	226
Active Safety products	178		—		178		201		—		201
Brake Systems	—		91		91		—		100		100
Total net sales	$	371	$	91	$	462	$	426	$	100	$	526

Net Sales by Products

	Nine Months Ended September 30, 2019						Nine Months Ended September 30, 2018
(Dollars in millions)	Electronics		Brake Systems		Total		Electronics		Brake Systems		Total
Restraint Control Systems	$	617	$	—	$	617	$	739	$	—	$	739
Active Safety products	554		—		554		628		—		628
Brake Systems	—		275		275		—		325		325
Total net sales	$	1,171	$	275	$	1,446	$	1,367	$	325	$	1,692