Restructuring Charges And Asset Impairments - Net Restructuring Costs by Type of Exit Cost (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	$ (15)	$ (12)
Impairment of assets held for sale	(3)	(1)
Total asset impairment charges	18	12
Restructuring Costs and Asset Impairment Charges	18	13
Powertrain [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Costs and Asset Impairment Charges	12
Motorparts [Member]
Restructuring Cost and Reserve [Line Items]
Severance and other charges, net	(2)
Asset impairments related to restructuring activities	(1)
Restructuring Costs and Asset Impairment Charges	6
Corporate [Member]
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	0	0
Restructuring and Asset Impairments [Member]
Restructuring Cost and Reserve [Line Items]
Asset impairments including impairments related to restructuring activities		1
Severance and other charges, net	(15)	(12)
Asset impairments related to restructuring activities	0	0
Total restructuring charges	(15)	(12)
Other asset impairments	0
Impairment of assets held for sale	(3)
Total asset impairment charges	3	1
Restructuring and Asset Impairments [Member] | Powertrain [Member]
Restructuring Cost and Reserve [Line Items]
Severance and other charges, net	(12)	(6)
Asset impairments related to restructuring activities	0	0
Total restructuring charges	(12)	(6)
Other asset impairments	0	0
Impairment of assets held for sale	0
Total asset impairment charges	0	0
Restructuring Costs and Asset Impairment Charges	12	6
Restructuring and Asset Impairments [Member] | Motorparts [Member]
Restructuring Cost and Reserve [Line Items]
Severance and other charges, net	(3)	(6)
Asset impairments related to restructuring activities	0	0
Total restructuring charges	(3)	(6)
Other asset impairments	0	(1)
Impairment of assets held for sale	(3)
Total asset impairment charges	3	1
Restructuring Costs and Asset Impairment Charges	6	7
Restructuring and Asset Impairments [Member] | Corporate [Member]
Restructuring Cost and Reserve [Line Items]
Severance and other charges, net	0	0
Asset impairments related to restructuring activities	0	0
Total restructuring charges	0	0
Other asset impairments	0	0
Impairment of assets held for sale	0
Total asset impairment charges	0	0
Restructuring Costs and Asset Impairment Charges	$ 0	$ 0