Restructuring Charges And Asset Impairments - Summary of Company's Restructuring Liabilities by Reporting Segment (Detail) - USD ($) $ in Millions	3 Months Ended				6 Months Ended
	Jun. 30, 2016	Mar. 31, 2016	Jun. 30, 2015	Mar. 31, 2015	Jun. 30, 2016	Jun. 30, 2015
Restructuring Reserve [Roll Forward]
Restructuring Reserve, Beginning Balance	$ 86	$ 80	$ 47	$ 53	$ 80	$ 53
Provisions	6	15	31	12
Reversals			(4)
Payments	(13)	(11)	(22)	(16)	(24)	(38)
Acquisitions				2
Foreign Currency	(2)	2		(4)
Restructuring Reserve, Ending Balance	77	86	52	47	77	52
Total Reporting Segments [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve, Beginning Balance	86	80	47	52	80	52
Provisions	6	15	31	12
Reversals			(4)
Payments	(13)	(11)	(22)	(15)
Acquisitions				2
Foreign Currency	(2)	2		(4)
Restructuring Reserve, Ending Balance	77	86	52	47	77	52
Total Reporting Segments [Member] | Powertrain [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve, Beginning Balance	41	33	31	36	33	36
Provisions	2	12	6	6
Reversals			(4)
Payments	(7)	(5)	(16)	(10)
Acquisitions				2
Foreign Currency	(1)	1		(3)
Restructuring Reserve, Ending Balance	35	41	17	31	35	17
Total Reporting Segments [Member] | Motorparts [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve, Beginning Balance	45	47	16	16	47	16
Provisions	4	3	25	6
Reversals			0
Payments	(6)	(6)	(6)	(5)
Acquisitions				0
Foreign Currency	(1)	1		(1)
Restructuring Reserve, Ending Balance	42	45	35	16	42	35
Corporate [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve, Beginning Balance	0	0	0	1	0	1
Provisions	0	0	0	0
Reversals			0
Payments	0	0	0	(1)
Acquisitions				0
Foreign Currency	0	0		0
Restructuring Reserve, Ending Balance	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0