Revenue

6 Months Ended

Jun. 30, 2021

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, 2021						Three Months Ended June 30, 2020
(Dollars in millions)	Electronics		Brake Systems		Total		Electronics		Brake Systems		Total
Asia	$	100	$	—	$	100	$	59	$	—	$	59
Americas	114		13		127		43		5		48
Europe	171		—		171		77		—		77
Total net sales	$	385	$	13	$	398	$	179	$	5	$	184

Net Sales by Region

	Six Months Ended June 30, 2021						Six Months Ended June 30, 2020
(Dollars in millions)	Electronics		Brake Systems		Total		Electronics		Brake Systems		Total
Asia	$	198	$	—	$	198	$	117	$	24	$	141
Americas	245		24		$	269	160		19		$	179
Europe	349		—		349		226		—		226
Total net sales	$	792	$	24	$	816	$	503	$	43	$	546

Net Sales by Products

	Three Months Ended June 30, 2021						Three Months Ended June 30, 2020
(Dollars in millions)	Electronics		Brake Systems		Total		Electronics		Brake Systems		Total
Restraint Control Systems	$	175	$	—	$	175	$	100	$	—	$	100
Active Safety products	197		—		197		79		—		79
Brake Systems	—		13		13		—		5		5
Other	13		—		13		—		—		—
Total net sales	$	385	$	13	$	398	$	179	$	5	$	184

Net Sales by Products

	Six Months Ended June 30, 2021						Six Months Ended June 30, 2020
(Dollars in millions)	Electronics		Brake Systems		Total		Electronics		Brake Systems		Total
Restraint Control Systems	$	364	$	—	$	364	$	262	$	—	$	262
Active Safety products	402		—		402		241		—		241
Brake Systems	—		24		24		—		43		43
Other	26		—		26		—		—		—
Total net sales	$	792	$	24	$	816	$	503	$	43	$	546