Segment Information - Segment Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Segment Reporting [Line Items]
Revenues from external customers	$ 4,504	$ 2,533	$ 8,988	$ 5,114
Total EBITDA including noncontrolling interests	310	171	455	353
Depreciation and amortization	(169)	(60)	(338)	(120)
Earnings (loss) before interest expense, income taxes, and noncontrolling interests	141	111	117	233
Interest expense	(82)	(22)	(163)	(45)
Income tax (expense) benefit	(14)	(26)	(14)	(51)
Net income (loss)	45	63	(60)	137
Intersegment Revenues
Segment Reporting [Line Items]
Intersegment revenues	0	0	0	0
Operating Segments
Segment Reporting [Line Items]
Revenues from external customers	4,504	2,533	8,988	5,114
Total EBITDA including noncontrolling interests	388	217	632	443
Operating Segments | Intersegment Revenues
Segment Reporting [Line Items]
Intersegment revenues	89	5	192	11
Reclass and Elims
Segment Reporting [Line Items]
Revenues from external customers	0	0	0	0
Total EBITDA including noncontrolling interests	0	0	0	0
Reclass and Elims | Intersegment Revenues
Segment Reporting [Line Items]
Intersegment revenues	(89)	(5)	(192)	(11)
Clean Air
Segment Reporting [Line Items]
Revenues from external customers	1,827	1,694	3,606	3,450
Clean Air | Operating Segments
Segment Reporting [Line Items]
Revenues from external customers	1,827	1,694	3,606	3,450
Total EBITDA including noncontrolling interests	152	142	283	299
Clean Air | Operating Segments | Intersegment Revenues
Segment Reporting [Line Items]
Intersegment revenues	0	0	0	0
Powertrain
Segment Reporting [Line Items]
Revenues from external customers	1,133	0	2,308	0
Powertrain | Operating Segments
Segment Reporting [Line Items]
Revenues from external customers	1,133	0	2,308	0
Total EBITDA including noncontrolling interests	100	0	213	0
Powertrain | Operating Segments | Intersegment Revenues
Segment Reporting [Line Items]
Intersegment revenues	40	0	86	0
Ride Performance
Segment Reporting [Line Items]
Revenues from external customers	709	506	1,442	1,019
Ride Performance | Operating Segments
Segment Reporting [Line Items]
Revenues from external customers	709	506	1,442	1,019
Total EBITDA including noncontrolling interests	26	20	(19)	44
Ride Performance | Operating Segments | Intersegment Revenues
Segment Reporting [Line Items]
Intersegment revenues	38	5	84	11
Motorparts
Segment Reporting [Line Items]
Revenues from external customers	835	333	1,632	645
Motorparts | Operating Segments
Segment Reporting [Line Items]
Revenues from external customers	835	333	1,632	645
Total EBITDA including noncontrolling interests	110	55	155	100
Motorparts | Operating Segments | Intersegment Revenues
Segment Reporting [Line Items]
Intersegment revenues	11	0	22	0
Corporate
Segment Reporting [Line Items]
Revenues from external customers	0	0	0	0
Total EBITDA including noncontrolling interests	(78)	(46)	(177)	(90)
Corporate | Intersegment Revenues
Segment Reporting [Line Items]
Intersegment revenues	$ 0	$ 0	$ 0	$ 0