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ACQUISITIONS - Narrative (Details) € in Millions, ¥ in Millions, SFr in Millions, $ in Millions |  |  |  |  | 3 Months Ended | 12 Months Ended |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Mar. 01, 2023 USD ($) | Mar. 01, 2023 CNY (¥) | Dec. 01, 2022 USD ($) | Dec. 01, 2022 CHF (SFr) | Jul. 29, 2022 USD ($) | Mar. 31, 2022 USD ($) | Mar. 31, 2022 CNY (¥) | Mar. 31, 2024 USD ($) | Mar. 31, 2024 CNY (¥) | Dec. 31, 2023 USD ($) | Dec. 31, 2023 CNY (¥) | Dec. 31, 2022 USD ($) | Dec. 31, 2022 CNY (¥) | Mar. 31, 2024 CHF (SFr) | Dec. 01, 2023 USD ($) | Dec. 01, 2023 EUR (€) | Jun. 30, 2023 USD ($) | Jun. 30, 2023 CNY (¥) | Mar. 01, 2023 CNY (¥) | Dec. 01, 2022 CHF (SFr) | Mar. 31, 2022 CNY (¥)
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill |  |  |  |  |  |  |  | $ 2,977 |  | $ 3,013 |  |  |  |  |  |  |  |  |  |  |
Eldor Corporation’s Electric Hybrid Systems Business |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Earn out payment liability |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 78 | € 72 |  |  |  |  |
Contractual earn-out payments |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 191 | € 175 |  |  |  |  |
Retention payment payable period |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2 years | 2 years |  |  |  |  |
Estimated fair values of assets acquired and liabilities assumed, assets |  |  |  |  |  |  |  |  |  | 86 |  |  |  |  |  |  |  |  |  |  |
Estimated fair value of goodwill and intangibles |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 25 |  |  |  |  |  |
Estimated fair values of assets acquired and liabilities assumed, liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 8 |  |  |  |  |  |
Goodwill |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 14 |  |  |  |  |  |
Hubei Surpass Sun Electric Charging Business |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contractual earn-out payments | $ 15 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | ¥ 103 |  |
Goodwill | $ 2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business acquisition, percentage of voting interests acquired | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 100.00% |  |
Business consideration | $ 42 | ¥ 288 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Base purchase price | 39 | 268 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments to acquire businesses |  |  |  |  |  |  |  |  |  | $ 31 | ¥ 217 |  |  |  |  |  |  |  |  |  |
Remaining consideration payable | $ 8 | ¥ 51 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Hubei Surpass Sun Electric Charging Business | Other current liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consideration payable in next two years |  |  |  |  |  |  |  | 3 | ¥ 20 |  |  |  |  |  |  |  |  |  |  |  |
Consideration payable in next three months |  |  |  |  |  |  |  | 5 | ¥ 31 |  |  |  |  |  |  |  |  |  |  |  |
Drivetek AG |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contractual earn-out payments |  |  | $ 10 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | SFr 10 |
Retention payment payable period |  |  | 3 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3 years |
Business acquisition, percentage of voting interests acquired |  |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 100.00% |
Payments to acquire businesses |  |  | $ 29 | SFr 27 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other non-current liability |  |  |  |  |  |  |  | $ 11 |  |  |  |  |  | SFr 10 |  |  |  |  |  |  |
Rhombus Energy Solutions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contractual earn-out payments |  |  |  |  | $ 30 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business acquisition, percentage of voting interests acquired |  |  |  |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments to acquire businesses |  |  |  |  | $ 131 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Rhombus Energy Solutions | Employee Retention Payment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contractual earn-out payments |  |  |  |  | $ 25 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Retention payment payable period |  |  |  |  | 3 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Santroll Automotive Components |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Earn out payment liability |  |  |  |  |  | $ 40 |  |  |  |  |  |  |  |  |  |  | $ 24 | ¥ 200 |  |  | ¥ 250
Contractual earn-out payments |  |  |  |  |  | $ 47 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | ¥ 300
Business acquisition, percentage of voting interests acquired |  |  |  |  |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 100.00%
Business consideration |  |  |  |  |  | $ 192 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Base purchase price |  |  |  |  |  | $ 152 | ¥ 1,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments to acquire businesses |  |  |  |  |  |  |  |  |  |  |  | $ 157 | ¥ 1,000 |  |  |  |  |  |  |  |
Business combination, other operating expense |  |  |  |  |  |  |  |  |  |  |  | $ 5 |  |  |  |  |  |  |  |  |

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