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Note 18 - Equity Affiliates - Equity Method Investments (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Investments in equity affiliates $ 99  
Investments in affiliates carried at cost 6  
Investments in affiliates $ 105 $ 102
Dongfeng Dana Axle Co., Ltd. (DDAC) [Member]    
Investments in equity affiliates, ownership percentage 50.00%  
Investments in equity affiliates $ 65  
ROC-Spicer, Ltd. [Member]    
Investments in equity affiliates, ownership percentage 50.00%  
Investments in equity affiliates $ 23  
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 $ 5