v3.26.3
RESTRUCTURING - Schedule of Reserve by Type of Cost (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Restructuring Cost and Reserve [Line Items]        
Restructuring expense, net     $ 44 $ 31
Restructuring expense, net $ 50 $ 23 89 71
Corporate        
Restructuring Cost and Reserve [Line Items]        
Restructuring expense, net 2 0 4 1
Turbos & Thermal Technologies        
Restructuring Cost and Reserve [Line Items]        
Restructuring expense, net 8 5 21 22
Drivetrain & Morse Systems        
Restructuring Cost and Reserve [Line Items]        
Restructuring expense, net 13 1 19 3
PowerDrive Systems        
Restructuring Cost and Reserve [Line Items]        
Restructuring expense, net 26 12 28 29
Battery Energy Systems        
Restructuring Cost and Reserve [Line Items]        
Restructuring expense, net 1 5 17 16
Employee termination benefits        
Restructuring Cost and Reserve [Line Items]        
Restructuring expense, net 45 19 77 52
Employee termination benefits | Corporate        
Restructuring Cost and Reserve [Line Items]        
Restructuring expense, net 2 0 4 1
Employee termination benefits | Turbos & Thermal Technologies        
Restructuring Cost and Reserve [Line Items]        
Restructuring expense, net 8 5 18 18
Employee termination benefits | Drivetrain & Morse Systems        
Restructuring Cost and Reserve [Line Items]        
Restructuring expense, net 10 0 12 1
Employee termination benefits | PowerDrive Systems        
Restructuring Cost and Reserve [Line Items]        
Restructuring expense, net 24 10 27 19
Employee termination benefits | Battery Energy Systems        
Restructuring Cost and Reserve [Line Items]        
Restructuring expense, net 1 4 16 13
Other        
Restructuring Cost and Reserve [Line Items]        
Restructuring expense, net 5 4 12 19
Other | Corporate        
Restructuring Cost and Reserve [Line Items]        
Restructuring expense, net 0 0 0 0
Other | Turbos & Thermal Technologies        
Restructuring Cost and Reserve [Line Items]        
Restructuring expense, net 0 0 3 4
Other | Drivetrain & Morse Systems        
Restructuring Cost and Reserve [Line Items]        
Restructuring expense, net 3 1 7 2
Other | PowerDrive Systems        
Restructuring Cost and Reserve [Line Items]        
Restructuring expense, net 2 2 1 10
Other | Battery Energy Systems        
Restructuring Cost and Reserve [Line Items]        
Restructuring expense, net $ 0 $ 1 $ 1 $ 3