Goodwill and Other Intangible Assets - Summary of Company's Goodwill and Other Intangible Assets (Net) (Detail) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Goodwill [Roll Forward]
Goodwill, beginning of period	$ 673
Acquisitions and purchase accounting adjustments	6
Foreign exchange	6
Goodwill, end of period	685		$ 673
Goodwill, Impaired, Accumulated Impairment Loss	784		784
Amortization expense	(15)	$ (14)
Finite-Lived Intangible Assets, Amortization Expense, Maturity Schedule [Abstract]
Remaining 2016	44
2017	58
2018	49
2019	49
2020	49
2021 and thereafter	142
Total	391		404
Powertrain [Member]
Goodwill, Impairment Loss			44
Goodwill [Roll Forward]
Goodwill, beginning of period	512
Acquisitions and purchase accounting adjustments	6
Foreign exchange	6
Goodwill, end of period	524		512
Goodwill, Impaired, Accumulated Impairment Loss	136		136
Motorparts [Member]
Goodwill [Roll Forward]
Goodwill, beginning of period	161
Acquisitions and purchase accounting adjustments	0
Foreign exchange	0
Goodwill, end of period	161		161
Goodwill, Impaired, Accumulated Impairment Loss	648		$ 648
Finite-Lived Intangible Assets [Member]
Goodwill [Roll Forward]
Amortization expense	$ (15)	$ (14)