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ACQUISITIONS - Schedule of Goodwill (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020	Oct. 01, 2020
Business Acquisition [Line Items]
Goodwill	$ 3,325	$ 2,627
Air Management
Business Acquisition [Line Items]
Goodwill	1,711	1,015
e-Propulsion & Drivetrain
Business Acquisition [Line Items]
Goodwill	1,303	1,313
Aftermarket
Business Acquisition [Line Items]
Goodwill	311	$ 299
Delphi Technologies PLC
Business Acquisition [Line Items]
Goodwill	733		$ 710
Delphi Technologies PLC | Air Management
Business Acquisition [Line Items]
Goodwill	151
Delphi Technologies PLC | e-Propulsion & Drivetrain
Business Acquisition [Line Items]
Goodwill	284
Delphi Technologies PLC | Fuel Injection
Business Acquisition [Line Items]
Goodwill	0
Delphi Technologies PLC | Aftermarket
Business Acquisition [Line Items]
Goodwill	$ 298

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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