Segment Information - Segment Adjusted EBITDA (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Segment Reporting Information [Line Items]
Depreciation and amortization	$ (145)	$ (159)	$ (300)	$ (330)
Earnings (loss) before interest expense, income taxes, and noncontrolling interests	127	(375)	331	(1,220)
Interest expense	(69)	(66)	(139)	(141)
Income tax (expense) benefit	(41)	101	(88)	195
Net income (loss)	17	(340)	104	(1,166)
Total Reportable Segments
Segment Reporting Information [Line Items]
EBITDA including noncontrolling interests	336	(167)	745	(755)
Total Reportable Segments | Motorparts
Segment Reporting Information [Line Items]
EBITDA including noncontrolling interests	67	(52)	169	(92)
Total Reportable Segments | Performance Solutions
Segment Reporting Information [Line Items]
EBITDA including noncontrolling interests	32	(63)	75	(737)
Total Reportable Segments | Clean Air
Segment Reporting Information [Line Items]
EBITDA including noncontrolling interests	143	17	292	116
Total Reportable Segments | Powertrain
Segment Reporting Information [Line Items]
EBITDA including noncontrolling interests	94	(69)	209	(42)
Corporate
Segment Reporting Information [Line Items]
EBITDA including noncontrolling interests	$ (64)	$ (49)	$ (114)	$ (135)