Segment Information - Segment Information (Details) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Segment Reporting [Line Items]
Revenues from external customers	$ 4,484,000,000	$ 2,581,000,000
Total EBITDA including noncontrolling interests	145,000,000	182,000,000
Less: Depreciation and amortization	(169,000,000)	(60,000,000)
Earnings (loss) before interest expense, income taxes, and noncontrolling interests	(24,000,000)	122,000,000
Less: Interest expense	(81,000,000)	(23,000,000)
Less: Income tax expense (benefit)	0	(25,000,000)
Net income (loss)	(105,000,000)	74,000,000
Intersegment Revenues
Segment Reporting [Line Items]
Intersegment revenues	0	0
Operating Segments
Segment Reporting [Line Items]
Revenues from external customers	4,484,000,000	2,581,000,000
Total EBITDA including noncontrolling interests	244,000,000	226,000,000
Operating Segments | Intersegment Revenues
Segment Reporting [Line Items]
Intersegment revenues	103,000,000	6,000,000
Reclass and Elims
Segment Reporting [Line Items]
Revenues from external customers	0	0
Total EBITDA including noncontrolling interests	0	0
Reclass and Elims | Intersegment Revenues
Segment Reporting [Line Items]
Intersegment revenues	(103,000,000)	(6,000,000)
Clean Air
Segment Reporting [Line Items]
Revenues from external customers	1,779,000,000	1,756,000,000
Total EBITDA including noncontrolling interests	131,000,000	157,000,000
Clean Air | Operating Segments
Segment Reporting [Line Items]
Revenues from external customers	1,779,000,000	1,756,000,000
Total EBITDA including noncontrolling interests	131,000,000	157,000,000
Clean Air | Operating Segments | Intersegment Revenues
Segment Reporting [Line Items]
Intersegment revenues	0	0
Powertrain
Segment Reporting [Line Items]
Revenues from external customers	1,175,000,000	0
Total EBITDA including noncontrolling interests	113,000,000	0
Powertrain | Operating Segments
Segment Reporting [Line Items]
Revenues from external customers	1,175,000,000	0
Total EBITDA including noncontrolling interests	113,000,000	0
Powertrain | Operating Segments | Intersegment Revenues
Segment Reporting [Line Items]
Intersegment revenues	46,000,000	0
Ride Performance
Segment Reporting [Line Items]
Revenues from external customers	733,000,000	513,000,000
Total EBITDA including noncontrolling interests	(45,000,000)	24,000,000
Ride Performance | Operating Segments
Segment Reporting [Line Items]
Revenues from external customers	733,000,000	513,000,000
Total EBITDA including noncontrolling interests	(45,000,000)	24,000,000
Ride Performance | Operating Segments | Intersegment Revenues
Segment Reporting [Line Items]
Intersegment revenues	46,000,000	6,000,000
Motorparts
Segment Reporting [Line Items]
Revenues from external customers	797,000,000	312,000,000
Total EBITDA including noncontrolling interests	45,000,000	45,000,000
Motorparts | Operating Segments
Segment Reporting [Line Items]
Revenues from external customers	797,000,000	312,000,000
Total EBITDA including noncontrolling interests	45,000,000	45,000,000
Motorparts | Operating Segments | Intersegment Revenues
Segment Reporting [Line Items]
Intersegment revenues	11,000,000	0
Corporate
Segment Reporting [Line Items]
Revenues from external customers	0	0
Total EBITDA including noncontrolling interests	(99,000,000)	(44,000,000)
Corporate | Intersegment Revenues
Segment Reporting [Line Items]
Intersegment revenues	$ 0	$ 0