RESTRUCTURING - Schedule of Reserve by Type of Cost (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Restructuring Cost and Reserve [Line Items]
Restructuring expense	$ 36	$ 6	$ 66
Restructuring expense	101	74	79
Corporate
Restructuring Cost and Reserve [Line Items]
Restructuring expense	5	1	0
Turbos & Thermal Technologies
Restructuring Cost and Reserve [Line Items]
Restructuring expense	49	39	70
Drivetrain & Morse Systems
Restructuring Cost and Reserve [Line Items]
Restructuring expense	1	11	8
PowerDrive Systems
Restructuring Cost and Reserve [Line Items]
Restructuring expense	31	22	1
Battery & Charging Systems
Restructuring Cost and Reserve [Line Items]
Restructuring expense	15	1	0
Employee termination benefits
Restructuring Cost and Reserve [Line Items]
Restructuring expense	78	43	70
Employee termination benefits \| Corporate
Restructuring Cost and Reserve [Line Items]
Restructuring expense	5	1	0
Employee termination benefits \| Turbos & Thermal Technologies
Restructuring Cost and Reserve [Line Items]
Restructuring expense	44	21	63
Employee termination benefits \| Drivetrain & Morse Systems
Restructuring Cost and Reserve [Line Items]
Restructuring expense	(1)	10	6
Employee termination benefits \| PowerDrive Systems
Restructuring Cost and Reserve [Line Items]
Restructuring expense	19	10	1
Employee termination benefits \| Battery & Charging Systems
Restructuring Cost and Reserve [Line Items]
Restructuring expense	11	1	0
Other
Restructuring Cost and Reserve [Line Items]
Restructuring expense	23	31	9
Other \| Corporate
Restructuring Cost and Reserve [Line Items]
Restructuring expense	0	0	0
Other \| Turbos & Thermal Technologies
Restructuring Cost and Reserve [Line Items]
Restructuring expense	5	18	7
Other \| Drivetrain & Morse Systems
Restructuring Cost and Reserve [Line Items]
Restructuring expense	2	1	2
Other \| PowerDrive Systems
Restructuring Cost and Reserve [Line Items]
Restructuring expense	12	12	0
Other \| Battery & Charging Systems
Restructuring Cost and Reserve [Line Items]
Restructuring expense	$ 4	$ 0	$ 0