Note 18 - Equity Affiliates - Equity Method Investments (Details) - USD ($) $ in Millions |
Sep. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Investments in equity affiliates | $ 108 | |
| Investments in affiliates carried at cost | 6 | |
| Investments in affiliates | $ 114 | $ 102 |
| Dongfeng Dana Axle Co., Ltd. (DDAC) [Member] | ||
| Investments in equity affiliates, ownership percentage | 50.00% | |
| Investments in equity affiliates | $ 73 | |
| ROC-Spicer, Ltd. [Member] | ||
| Investments in equity affiliates, ownership percentage | 50.00% | |
| Investments in equity affiliates | $ 22 | |
| Tai Ya Investment (HK) Co., Limited [Member] | ||
| Investments in equity affiliates, ownership percentage | 50.00% | |
| Investments in equity affiliates | $ 6 | |
| All Others as a Group [Member] | ||
| Investments in equity affiliates | $ 7 |
| X | ||||||||||
- Definition The amount of equity method investments carried at cost. No definition available.
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| X | ||||||||||
- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of investment in equity method investee and investment in and advance to affiliate. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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