v3.25.4

GOODWILL AND OTHER INTANGIBLES - Narrative (Details) $ in Millions | 3 Months Ended | 6 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Dec. 31, 2025 USD ($) | Sep. 30, 2025 unit | Mar. 31, 2025 USD ($) | Dec. 31, 2024 unit | Dec. 31, 2024 segment | Dec. 31, 2025 USD ($) segment unit | Dec. 31, 2024 USD ($) | Dec. 31, 2023 USD ($) | Mar. 31, 2024
Goodwill [Line Items] |  |  |  |  |  |  |  |  |
Number of reportable segments (in segments) | segment |  |  |  |  | 4 | 4 |  |  |
Number of reporting units | unit |  | 2 |  | 2 |  | 4 |  |  |
Impairment |  |  | $ 13 |  |  | $ 423 | $ 577 |  |
Goodwill impairment test, weighted average cost of capital discount rate for future cash flow (as a percent) |  |  |  |  |  | 14.00% |  |  |
Intangible asset amortization |  |  |  |  |  | $ 66 | 69 | $ 67 |
Future amortization expense - 2026 | $ 57 |  |  |  |  | 57 |  |  |
Future amortization expense - 2027 | 49 |  |  |  |  | 49 |  |  |
Future amortization expense - 2028 | 49 |  |  |  |  | 49 |  |  |
Future amortization expense - 2029 | 50 |  |  |  |  | 50 |  |  |
Future amortization expense - 2030 | 48 |  |  |  |  | 48 |  |  |
Future amortization expense - Thereafter | 137 |  |  |  |  | 137 |  |  |
Other intangible assets |  |  |  |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |  |  |  |
Intangible asset amortization |  |  |  |  |  | 66 | 69 | $ 67 |
PowerDrive Systems |  |  |  |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |  |  |  |
Impairment | 0 |  |  |  |  |  | 468 |  |
Battery & Charging Systems |  |  |  |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |  |  |  |
Impairment | $ 410 |  |  |  |  | $ 423 | $ 109 |  |
Fair value in exceeded including goodwill, percent |  |  | 18.00% |  |  |  |  |  | 5.00%

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