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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 |  |  |

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