DISCONTINUED OPERATIONS - Financial Results from Discontinued Operations (Details) - Phinia - Discontinued Operations - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net sales	$ 0	$ 1,723	$ 3,348
Cost of sales	0	1,362	2,616
Gross profit	0	361	732
Selling, general and administrative expenses	0	173	320
Restructuring expense	0	7	11
Other operating expense, net	31	132	36
Operating (loss) income	(31)	49	365
Equity in affiliates’ earnings, net of tax	0	(5)	(10)
Interest expense, net	0	0	1
Other postretirement income	0	0	(31)
Earnings from discontinued operations before income taxes	(31)	54	405
(Benefit) provision for income taxes	(2)	61	97
Net (loss) earnings from discontinued operations attributable to PHINIA	$ (29)	$ (7)	$ 308