OTHER OPERATING EXPENSE, NET - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Business Acquisition [Line Items]
Merger, acquisition and divestiture expense, net	$ 56	$ 9	$ 83	$ 32
BorgWarner Romeo Power LLC
Business Acquisition [Line Items]
Percent of ownership interest disposal				60.00%
Spinoff
Business Acquisition [Line Items]
Merger, acquisition and divestiture expense, net	$ 48		$ 67