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OTHER OPERATING EXPENSE, NET - Narrative (Details) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2021 USD ($) | Jun. 30, 2020 USD ($) employee | Jun. 30, 2021 USD ($) | Jun. 30, 2020 USD ($) employee
Schedule of Equity Method Investments |  |  |  |
Merger, acquisition and divestiture expense | $ 15 | $ 21 | $ 28 | $ 42
Loss on sale | 7 | 0 | 7 | 0
Gain on business insurance recovery | $ 0 | $ 6 | $ 2 | $ 6
Europe | Facility Closure |  |  |  |
Schedule of Equity Method Investments |  |  |  |
Number of properties | employee |  | 2 |  | 2
Air Management |  |  |  |
Schedule of Equity Method Investments |  |  |  |
Impairment of assets to be disposed |  | $ 9 |  | $ 9
e-Propulsion & Drivetrain |  |  |  |
Schedule of Equity Method Investments |  |  |  |
Impairment of assets to be disposed |  | $ 8 |  | $ 8

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