Segment Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Segment Reporting Information [Line Items]
External Sales	$ 1,609	$ 1,715	$ 1,936	$ 1,964	$ 1,895	$ 1,940	$ 1,920	$ 1,789	$ 7,224	$ 7,544	$ 5,921
Segment EBITDA									788	785	589
Capital Spend									164	196	120
Depreciation									190	217	238
Net assets	2,623				2,729				2,623	2,729	2,571
LVD
Segment Reporting Information [Line Items]
External Sales									2,743	2,696	2,397
Inter- Segment Sales									186	206	201
Segment EBITDA									263	262	227
Capital Spend									47	71	61
Depreciation									82	90	107
Net assets	708				730				708	730	831
Power Technologies
Segment Reporting Information [Line Items]
External Sales									1,012	1,042	927
Inter- Segment Sales									21	27	26
Segment EBITDA									137	139	125
Capital Spend									24	34	17
Depreciation									41	46	50
Net assets	394				420				394	420	434
Commercial Vehicle
Segment Reporting Information [Line Items]
External Sales									1,960	2,245	1,463
Inter- Segment Sales									134	122	102
Segment EBITDA									199	218	139
Capital Spend									30	49	15
Depreciation									38	46	46
Net assets	757				808				757	808	664
Off-Highway
Segment Reporting Information [Line Items]
External Sales									1,509	1,560	1,131
Inter- Segment Sales									54	63	43
Segment EBITDA									189	166	98
Capital Spend									22	21	10
Depreciation									18	22	24
Net assets	399				432				399	432	481
Eliminations and other
Segment Reporting Information [Line Items]
External Sales										1	3
Inter- Segment Sales									(395)	(418)	(372)
Capital Spend									41	21	17
Depreciation									11	13	11
Net assets	$ 365				$ 339				$ 365	$ 339	$ 161