ACQUISITIONS AND DISPOSITIONS - Goodwill (Details) - USD ($) $ in Millions	Dec. 31, 2021	Sep. 30, 2021	Dec. 31, 2020	Oct. 01, 2020	Dec. 31, 2019
Business Acquisition [Line Items]
Goodwill	$ 3,279		$ 2,627		$ 1,842
Air Management
Business Acquisition [Line Items]
Goodwill	1,667		1,015		835
e-Propulsion & Drivetrain
Business Acquisition [Line Items]
Goodwill	1,301		1,313		1,007
Aftermarket
Business Acquisition [Line Items]
Goodwill	$ 311		$ 299		$ 0
Delphi Technologies PLC
Business Acquisition [Line Items]
Goodwill		$ 754		$ 710
Delphi Technologies PLC | Air Management
Business Acquisition [Line Items]
Goodwill		150
Delphi Technologies PLC | e-Propulsion & Drivetrain
Business Acquisition [Line Items]
Goodwill		301
Delphi Technologies PLC | Fuel Injection
Business Acquisition [Line Items]
Goodwill		0
Delphi Technologies PLC | Aftermarket
Business Acquisition [Line Items]
Goodwill		$ 303