Operations by Reporting Segment - Summary of Total Assets (Detail) - USD ($) $ in Millions	Jun. 30, 2016	Dec. 31, 2015
Segment Reporting Information [Line Items]
Total Assets	$ 7,299	$ 7,228
Total Reporting Segments [Member]
Segment Reporting Information [Line Items]
Total Assets	7,134	7,138
Corporate [Member]
Segment Reporting Information [Line Items]
Total Assets	165	90
Powertrain [Member] | Total Reporting Segments [Member]
Segment Reporting Information [Line Items]
Total Assets	4,079	3,997
Motorparts [Member] | Total Reporting Segments [Member]
Segment Reporting Information [Line Items]
Total Assets	$ 3,055	$ 3,141