Project-to-Date and Estimated Future Restructuring Costs (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended			27 Months Ended	36 Months Ended	9 Months Ended	27 Months Ended	36 Months Ended	9 Months Ended	27 Months Ended	36 Months Ended	9 Months Ended	27 Months Ended	36 Months Ended	9 Months Ended	27 Months Ended	36 Months Ended	9 Months Ended	27 Months Ended	36 Months Ended	9 Months Ended	27 Months Ended	36 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012 LVD	Dec. 31, 2011 LVD	Sep. 30, 2012 LVD	Sep. 30, 2012 Power Technologies	Dec. 31, 2011 Power Technologies	Sep. 30, 2012 Power Technologies	Sep. 30, 2012 Commercial Vehicle	Dec. 31, 2011 Commercial Vehicle	Sep. 30, 2012 Commercial Vehicle	Sep. 30, 2012 Off-Highway	Dec. 31, 2011 Off-Highway	Sep. 30, 2012 Off-Highway	Sep. 30, 2012 Corporate and Other	Dec. 31, 2011 Corporate and Other	Sep. 30, 2012 Corporate and Other	Sep. 30, 2012 Segment, Discontinued Operations	Dec. 31, 2011 Segment, Discontinued Operations	Sep. 30, 2012 Segment, Discontinued Operations	Sep. 30, 2012 Total Restructuring Costs including cost associated with discontinued operations.	Dec. 31, 2011 Total Restructuring Costs including cost associated with discontinued operations.	Sep. 30, 2012 Total Restructuring Costs including cost associated with discontinued operations.
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 6	$ 22	$ 30	$ 60	$ 5			$ 1			$ 22						$ 2			$ 3			$ 33
Expense Recognized						23	28		12	13		22	44		8	8		6	8		2	5		73	106
Future Cost to Complete					$ 11			$ 4			$ 10			$ 2						$ 3			$ 30