Segment Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Segment Reporting [Line Items]
Revenues from external customers	$ 2,537	$ 2,317	$ 5,111	$ 4,609
EBIT, Earnings (loss) before interest expense, income taxes, and noncontrolling interests	113	27	230	148
Total assets	5,003	4,881	5,003	4,881	$ 4,842
Intersegment Revenues
Segment Reporting [Line Items]
Intersegment revenues	0	0	0	0
Operating Segments
Segment Reporting [Line Items]
Revenues from external customers	2,537	2,317	5,111	4,609
EBIT, Earnings (loss) before interest expense, income taxes, and noncontrolling interests	160	178	322	341
Total assets	4,947	4,854	4,947	4,854
Operating Segments | Intersegment Revenues
Segment Reporting [Line Items]
Intersegment revenues	40	40	80	91
Reclass and Elims
Segment Reporting [Line Items]
Revenues from external customers	0	0	0	0
EBIT, Earnings (loss) before interest expense, income taxes, and noncontrolling interests	0	0	0	0
Total assets	56	27	56	27
Reclass and Elims | Intersegment Revenues
Segment Reporting [Line Items]
Intersegment revenues	(40)	(40)	(80)	(91)
Clean Air Division | Operating Segments
Segment Reporting [Line Items]
Revenues from external customers	1,694	1,539	3,450	3,094
EBIT, Earnings (loss) before interest expense, income taxes, and noncontrolling interests	105	106	224	200
Total assets	2,957	2,907	2,957	2,907
Clean Air Division | Operating Segments | Intersegment Revenues
Segment Reporting [Line Items]
Intersegment revenues	13	17	28	42
Ride Performance Division | Operating Segments
Segment Reporting [Line Items]
Revenues from external customers	506	442	1,019	870
EBIT, Earnings (loss) before interest expense, income taxes, and noncontrolling interests	5	18	13	45
Total assets	1,094	1,075	1,094	1,075
Ride Performance Division | Operating Segments | Intersegment Revenues
Segment Reporting [Line Items]
Intersegment revenues	14	13	29	28
Aftermarket | Operating Segments
Segment Reporting [Line Items]
Revenues from external customers	337	336	642	645
EBIT, Earnings (loss) before interest expense, income taxes, and noncontrolling interests	50	54	85	96
Total assets	896	872	896	872
Aftermarket | Operating Segments | Intersegment Revenues
Segment Reporting [Line Items]
Intersegment revenues	13	10	23	21
Other
Segment Reporting [Line Items]
Revenues from external customers	0	0	0	0
EBIT, Earnings (loss) before interest expense, income taxes, and noncontrolling interests	(47)	(151)	(92)	(193)
Total assets	0	0	0	0
Other | Intersegment Revenues
Segment Reporting [Line Items]
Intersegment revenues	$ 0	$ 0	$ 0	$ 0