v3.25.2
Note 20 - Equity Affiliates - Equity Method Investments (Details) - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Investments in equity affiliates $ 93  
Investments in affiliates carried at cost 5  
Investments in affiliates $ 98 $ 125
Dongfeng Dana Axle Co., Ltd. (DDAC) [Member]    
Investments in equity affiliates, ownership percentage 50.00%  
Investments in equity affiliates $ 58  
ROC-Spicer, Ltd. [Member]    
Investments in equity affiliates, ownership percentage 50.00%  
Investments in equity affiliates $ 24  
Tai Ya Investment (HK) Co., Limited [Member]    
Investments in equity affiliates, ownership percentage 50.00%  
Investments in equity affiliates $ 5  
All Others as a Group [Member]    
Investments in equity affiliates $ 6