REVENUE FROM CONTRACTS WITH CUSTOMERS - Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Disaggregation of Revenue [Line Items]
Net sales	$ 3,758	$ 1,426	$ 7,767	$ 3,705
Air Management
Disaggregation of Revenue [Line Items]
Net sales	1,818	819	3,786	2,238
e-Propulsion & Drivetrain
Disaggregation of Revenue [Line Items]
Net sales	1,294	607	2,713	1,467
Fuel Injection
Disaggregation of Revenue [Line Items]
Net sales	424	0	850	0
Aftermarket
Disaggregation of Revenue [Line Items]
Net sales	222	0	418	0
North America
Disaggregation of Revenue [Line Items]
Net sales	1,002	357	2,139	1,167
North America | Air Management
Disaggregation of Revenue [Line Items]
Net sales	464	167	996	554
North America | e-Propulsion & Drivetrain
Disaggregation of Revenue [Line Items]
Net sales	453	190	988	613
North America | Fuel Injection
Disaggregation of Revenue [Line Items]
Net sales	1	0	4	0
North America | Aftermarket
Disaggregation of Revenue [Line Items]
Net sales	84	0	151	0
Europe
Disaggregation of Revenue [Line Items]
Net sales	1,403	428	2,885	1,330
Europe | Air Management
Disaggregation of Revenue [Line Items]
Net sales	785	338	1,618	1,049
Europe | e-Propulsion & Drivetrain
Disaggregation of Revenue [Line Items]
Net sales	251	90	527	281
Europe | Fuel Injection
Disaggregation of Revenue [Line Items]
Net sales	259	0	530	0
Europe | Aftermarket
Disaggregation of Revenue [Line Items]
Net sales	108	0	210	0
Asia
Disaggregation of Revenue [Line Items]
Net sales	1,279	630	2,603	1,163
Asia | Air Management
Disaggregation of Revenue [Line Items]
Net sales	531	306	1,103	597
Asia | e-Propulsion & Drivetrain
Disaggregation of Revenue [Line Items]
Net sales	584	324	1,186	566
Asia | Fuel Injection
Disaggregation of Revenue [Line Items]
Net sales	147	0	284	0
Asia | Aftermarket
Disaggregation of Revenue [Line Items]
Net sales	17	0	30	0
Other
Disaggregation of Revenue [Line Items]
Net sales	74	11	140	45
Other | Air Management
Disaggregation of Revenue [Line Items]
Net sales	38	8	69	38
Other | e-Propulsion & Drivetrain
Disaggregation of Revenue [Line Items]
Net sales	6	3	12	7
Other | Fuel Injection
Disaggregation of Revenue [Line Items]
Net sales	17	0	32	0
Other | Aftermarket
Disaggregation of Revenue [Line Items]
Net sales	$ 13	$ 0	$ 27	$ 0