- Net Carrying Amount of Goodwill (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Intangible Assets And Goodwill [Line Items]
Balance as January 1 Goodwill	$ 69	$ 72
Translation adjustments	(4)	(3)
Balance at December 31 Goodwill	65	69
Clean Air Division [Member] | North America [Member]
Intangible Assets And Goodwill [Line Items]
Balance as January 1 Goodwill	14	14
Translation adjustments	0	0
Balance at December 31 Goodwill	14	14
Clean Air Division [Member] | Europe South America And India [Member]
Intangible Assets And Goodwill [Line Items]
Balance as January 1 Goodwill	14	14
Translation adjustments	(2)	0
Balance at December 31 Goodwill	12	14
Clean Air Division [Member] | Asia Pacific
Intangible Assets And Goodwill [Line Items]
Balance as January 1 Goodwill	0	0
Translation adjustments	0	0
Balance at December 31 Goodwill	0	0
Ride Performance Division [Member] | North America [Member]
Intangible Assets And Goodwill [Line Items]
Balance as January 1 Goodwill	10	10
Translation adjustments	0	0
Balance at December 31 Goodwill	10	10
Ride Performance Division [Member] | Europe South America And India [Member]
Intangible Assets And Goodwill [Line Items]
Balance as January 1 Goodwill	31	34
Translation adjustments	(2)	(3)
Balance at December 31 Goodwill	29	31
Ride Performance Division [Member] | Asia Pacific
Intangible Assets And Goodwill [Line Items]
Balance as January 1 Goodwill	0	0
Translation adjustments	0	0
Balance at December 31 Goodwill	$ 0	$ 0