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OTHER OPERATING EXPENSE (INCOME), NET - Narrative (Details) SFr in Millions, $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2024 USD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2024 CHF (SFr)
Schedule of Equity Method Investments [Line Items] |  |  |  |
Adjustments associated with Spin-Off related balances | $ 17 | $ 0 | $ 0 |
Loss on commercial contract settlement | 15 | 0 | 0 |
Loss (gain) on sale of business | (6) | 5 | 13 |
Loss (gain) on sale of assets | (2) | 13 | 0 |
Merger and acquisition expense, net | 2 | 23 | 9 |
Loss on change in estimate of the expected earn-out estimate |  | 8 |  |
Spin-Off of PHINIA | 5 | $ 10 | 0 |
Water Valley |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Loss (gain) on sale of business |  |  | (9) |
BorgWarner Romeo Power LLC |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Loss (gain) on sale of business |  |  | $ 22 |
Drivetek AG |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Estimated earn-out payments | $ 6 |  |  | SFr 5

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