Revenue

6 Months Ended

Jun. 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 June 30, 2019						Three Months Ended June 30, 2018
(Dollars in millions)	Electronics		Brake Systems		Total		Electronics		Brake Systems		Total
Asia	$	89	$	81	$	170	$	104	$	96	$	200
Americas	145		15		160		173		15		188
Europe	159		—		159		184		—		184
Total net sales	$	393	$	96	$	489	$	461	$	111	$	572

Net Sales by Region

	Six Months Ended June 30, 2019						Six Months Ended June 30, 2018
(Dollars in millions)	Electronics		Brake Systems		Total		Electronics		Brake Systems		Total
Asia	$	179	$	153	$	332	$	216	$	195	$	411
Americas	299		31		330		351		30		381
Europe	322		—		322		374		—		374
Total net sales	$	800	$	184	$	984	$	941	$	225	$	1,166

Net Sales by Products

	Three Months Ended June 30, 2019						Three Months Ended June 30, 2018
(Dollars in millions)	Electronics		Brake Systems		Total		Electronics		Brake Systems		Total
Restraint Control Systems	$	209	$	—	$	209	$	246	$	—	$	246
Active Safety products	184		—		184		215		—		215
Brake Systems	—		96		96		—		111		111
Total net sales	$	393	$	96	$	489	$	461	$	111	$	572

Net Sales by Products

	Six Months Ended June 30, 2019						Six Months Ended June 30, 2018
(Dollars in millions)	Electronics		Brake Systems		Total		Electronics		Brake Systems		Total
Restraint Control Systems	$	425	$	—	$	425	$	514	$	—	$	514
Active Safety products	375		—		375		427		—		427
Brake Systems	—		184		184		—		225		225
Total net sales	$	800	$	184	$	984	$	941	$	225	$	1,166