SEGMENTS - Net Sales to Segment Adjusted EBITDA (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net sales	$ 1,288	$ 1,320	$ 3,855	$ 3,965
Segment cost of goods sold	838	858	2,515	2,614
Segment Adjusted EBITDA	294	291	856	841
Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net sales	1,288	1,320	3,855	3,965
Segment cost of goods sold	735	751	2,210	2,303
Other segment items	259	278	789	821
Segment Adjusted EBITDA	294	291	856	841
Performance Coatings
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net sales	828	877	2,486	2,612
Segment Adjusted EBITDA	211	221	608	640
Performance Coatings | Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net sales	828	877	2,486	2,612
Segment cost of goods sold	440	461	1,331	1,400
Other segment items	177	195	547	572
Segment Adjusted EBITDA	211	221	608	640
Mobility Coatings
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net sales	460	443	1,369	1,353
Segment Adjusted EBITDA	83	70	248	201
Mobility Coatings | Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net sales	460	443	1,369	1,353
Segment cost of goods sold	295	290	879	903
Other segment items	82	83	242	249
Segment Adjusted EBITDA	$ 83	$ 70	$ 248	$ 201