REPORTABLE SEGMENTS - Schedule of Net sales and expenses by reporting segments (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Segment Reporting Information
Net sales	$ 3,638	$ 3,603	$ 7,153	$ 7,198
Cost of sales	2,998	2,918	5,874	5,869
Selling, general and administrative expenses - R&D, net	317	341	632	670
Segment Adjusted Operating Income (Loss)	289	297	526	592
Net sales - customers
Segment Reporting Information
Net sales	3,638	3,603	7,153	7,198
Net sales - inter-segment
Segment Reporting Information
Net sales	0	0	0	0
Inter-segment eliminations
Segment Reporting Information
Net sales	(12)	(11)	(23)	(22)
Inter-segment eliminations | Net sales - customers
Segment Reporting Information
Net sales	0	0	0	0
Inter-segment eliminations | Net sales - inter-segment
Segment Reporting Information
Net sales	(12)	(11)	(23)	(22)
Turbos & Thermal Technologies
Segment Reporting Information
Net sales	1,480	1,515	2,934	3,087
Turbos & Thermal Technologies | Operating segments
Segment Reporting Information
Net sales	1,481	1,515	2,935	3,089
Cost of sales	1,181	1,219	2,332	2,494
Selling, general and administrative expenses - R&D, net	44	43	85	85
Selling, general and administrative expenses - Other	28	28	55	56
Other segment items	1	1	1	2
Segment Adjusted Operating Income (Loss)	227	224	462	452
Turbos & Thermal Technologies | Operating segments | Net sales - customers
Segment Reporting Information
Net sales	1,480	1,515	2,934	3,087
Turbos & Thermal Technologies | Operating segments | Net sales - inter-segment
Segment Reporting Information
Net sales	1	0	1	2
Drivetrain & Morse Systems
Segment Reporting Information
Net sales	1,424	1,440	2,780	2,856
Drivetrain & Morse Systems | Operating segments
Segment Reporting Information
Net sales	1,429	1,442	2,790	2,861
Cost of sales	1,129	1,143	2,208	2,267
Selling, general and administrative expenses - R&D, net	32	25	61	57
Selling, general and administrative expenses - Other	8	9	18	18
Other segment items	0	(1)	0	0
Segment Adjusted Operating Income (Loss)	260	266	503	519
Drivetrain & Morse Systems | Operating segments | Net sales - customers
Segment Reporting Information
Net sales	1,424	1,440	2,780	2,856
Drivetrain & Morse Systems | Operating segments | Net sales - inter-segment
Segment Reporting Information
Net sales	5	2	10	5
PowerDrive Systems
Segment Reporting Information
Net sales	575	455	1,130	885
PowerDrive Systems | Operating segments
Segment Reporting Information
Net sales	581	464	1,142	900
Cost of sales	510	401	1,002	787
Selling, general and administrative expenses - R&D, net	93	103	192	203
Selling, general and administrative expenses - Other	15	10	29	23
Other segment items	(4)	(1)	(5)	(2)
Segment Adjusted Operating Income (Loss)	(33)	(49)	(76)	(111)
PowerDrive Systems | Operating segments | Net sales - customers
Segment Reporting Information
Net sales	575	455	1,130	885
PowerDrive Systems | Operating segments | Net sales - inter-segment
Segment Reporting Information
Net sales	6	9	12	15
Battery & Charging Systems
Segment Reporting Information
Net sales	159	193	309	370
Battery & Charging Systems | Operating segments
Segment Reporting Information
Net sales	159	193	309	370
Cost of sales	151	179	301	350
Selling, general and administrative expenses - R&D, net	10	12	21	24
Selling, general and administrative expenses - Other	9	11	20	22
Other segment items	1	1	1	(1)
Segment Adjusted Operating Income (Loss)	(12)	(10)	(34)	(25)
Battery & Charging Systems | Operating segments | Net sales - customers
Segment Reporting Information
Net sales	159	193	309	370
Battery & Charging Systems | Operating segments | Net sales - inter-segment
Segment Reporting Information
Net sales	$ 0	$ 0	$ 0	$ 0