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%