Note 2 - Discontinued Operations (Details Textual) - Off-highway Business [Member] - Discontinued Operations, Disposed of by Sale [Member] - Allison Transmission Holdings, Inc. [Member] - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | |||
|---|---|---|---|---|---|
Jan. 01, 2026 |
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Disposal Group, Including Discontinued Operation, Consideration | $ 2,664 | ||||
| Payments for Disposal of Business | $ 34 | ||||
| Disposal Group, Including Discontinued Operation, Consideration, Deferred | 82 | ||||
| Other Accrued Liabilities, Current | $ 82 | ||||
| Transition Services Agreement, Period (Month) | 24 months | ||||
| Disposal Group, Including Discontinued Operation, Other Expense | $ 6 | $ 14 | $ 55 | $ 34 | |