RESTRUCTURING - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2023
Restructuring Cost and Reserve [Line Items]
Restructuring expense, net of cash paid			$ 23	$ 15
Restructuring expense, net	$ 17	$ 25	48	44
Consolidation Restructuring Efforts
Restructuring Cost and Reserve [Line Items]
Restructuring expense, net of cash paid	16		23
Turbos & Thermal Technologies
Restructuring Cost and Reserve [Line Items]
Restructuring expense, net of cash paid	10	8	17	15
Drivetrain & Morse Systems
Restructuring Cost and Reserve [Line Items]
Restructuring expense, net of cash paid	1	1	2	10
PowerDrive Systems
Restructuring Cost and Reserve [Line Items]
Restructuring expense, net of cash paid	1	14	17	17
Battery & Charging Systems
Restructuring Cost and Reserve [Line Items]
Restructuring expense, net of cash paid	5	1	11	1
2024 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring and related plan		75		75
Restructuring expense, net of cash paid		10		10
Restructuring expense, net			30
2024 Restructuring Plan | Severance Costs and Professional Fees
Restructuring Cost and Reserve [Line Items]
Restructuring expense, net			8
2024 Restructuring Plan | Contractual Settlement
Restructuring Cost and Reserve [Line Items]
Restructuring expense, net			2
2024 Restructuring Plan | Other Actions
Restructuring Cost and Reserve [Line Items]
Restructuring expense, net of cash paid	10		10
2024 Restructuring Plan | PowerDrive Systems
Restructuring Cost and Reserve [Line Items]
Restructuring expense, net of cash paid	1	10	17	10
2024 Restructuring Plan | PowerDrive Systems | Severance Costs and Professional Fees
Restructuring Cost and Reserve [Line Items]
Restructuring expense, net			9
2024 Restructuring Plan | PowerDrive Systems | Professional Fees and Equipment Relocation Costs
Restructuring Cost and Reserve [Line Items]
Restructuring expense, net			8
2024 Restructuring Plan | Battery & Charging Systems
Restructuring Cost and Reserve [Line Items]
Restructuring expense, net of cash paid	$ 5		11
2024 Restructuring Plan | Battery & Charging Systems | Severance Costs and Professional Fees
Restructuring Cost and Reserve [Line Items]
Restructuring expense, net			9
2023 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring expense, net of cash paid		15		34
Restructuring expense, net			8		$ 148
2023 Restructuring Plan | Turbos & Thermal Technologies
Restructuring Cost and Reserve [Line Items]
Restructuring expense, net of cash paid		8	7	15
2023 Restructuring Plan | Turbos & Thermal Technologies | Severance Costs and Professional Fees
Restructuring Cost and Reserve [Line Items]
Restructuring expense, net		9	5
2023 Restructuring Plan | Turbos & Thermal Technologies | Professional Fees and Equipment Relocation Costs
Restructuring Cost and Reserve [Line Items]
Restructuring expense, net			$ 2	6
2023 Restructuring Plan | Drivetrain & Morse Systems
Restructuring Cost and Reserve [Line Items]
Restructuring expense, net of cash paid		1		10
2023 Restructuring Plan | Drivetrain & Morse Systems | Severance Costs and Professional Fees
Restructuring Cost and Reserve [Line Items]
Restructuring expense, net				9
2023 Restructuring Plan | PowerDrive Systems
Restructuring Cost and Reserve [Line Items]
Restructuring expense, net of cash paid		$ 4		$ 7
2023 Restructuring Plan | Minimum
Restructuring Cost and Reserve [Line Items]
Restructuring and related plan					130
2023 Restructuring Plan | Maximum
Restructuring Cost and Reserve [Line Items]
Restructuring and related plan					$ 150