REPORTABLE SEGMENTS - Schedule of Earnings before interest and income taxes (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Segment Reporting Information
Segment Adjusted Operating Income	$ 431	$ 428	$ 835	$ 789
Corporate, including stock-based compensation	55	61	120	122
Restructuring expense (Note 5)	25	9	44	12
Intangible asset amortization expense	17	17	34	34
Commercial contract settlement	15	0	15	0
Adjustments associated with Spin-Off related balances	11	0	11	0
Accelerated depreciation	8	0	8	3
Merger and acquisition expense	0	8	5	16
Gain on sale of businesses	0	(5)	(3)	(5)
Service and lease agreement termination	0	9	0	9
Gain on sale of assets	0	(6)	0	(6)
Other non-comparable items	3	2	9	(3)
Equity in affiliates’ earnings, net of tax	(12)	(12)	(17)	(13)
Unrealized loss on equity and debt securities	0	54	2	69
Interest expense, net	8	12	13
Other postretirement expense	3	3	6	5
Earnings from continuing operations before income taxes and noncontrolling interest	298	276	588	524
Air Management
Segment Reporting Information
Segment Adjusted Operating Income	304	305	612	590
Drivetrain & Battery Systems
Segment Reporting Information
Segment Adjusted Operating Income	176	142	334	253
ePropulsion
Segment Reporting Information
Segment Adjusted Operating Income	$ (49)	$ (19)	$ (111)	$ (54)