DISCONTINUED OPERATIONS - Financial Results from Discontinued Operations (Details) - Phinia - Discontinued Operations - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net sales	$ 1,723	$ 3,348	$ 3,227
Cost of sales	1,362	2,616	2,545
Gross profit	361	732	682
Selling, general and administrative expenses	173	320	375
Restructuring expense	7	11	55
Other operating expense, net	132	36	15
Operating (loss) income	49	365	237
Equity in affiliates’ earnings, net of tax	(5)	(10)	(6)
Interest expense, net	0	1	2
Other postretirement expense (income)	0	(31)	(38)
Earnings from discontinued operations before income taxes	54	405	279
Provision for income taxes	61	97	85
Net (loss) earnings from discontinued operations attributable to PHINIA	$ (7)	$ 308	$ 194