SEGMENTS - Schedule of Segment Reporting Information, by Segment (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Segment Reporting Information [Line Items]
Net sales	$ 1,288	$ 1,320	$ 3,855	$ 3,965
Segment Adjusted EBITDA	294	291	856	841
Investment in unconsolidated affiliates	12		12		$ 11
Intercompany sales between segments	0	0	0	0
Performance Coatings
Segment Reporting Information [Line Items]
Net sales	828	877	2,486	2,612
Segment Adjusted EBITDA	211	221	608	640
Investment in unconsolidated affiliates	2		2		2
Mobility Coatings
Segment Reporting Information [Line Items]
Net sales	460	443	1,369	1,353
Segment Adjusted EBITDA	83	70	248	201
Investment in unconsolidated affiliates	10		10		$ 9
Refinish | Performance Coatings
Segment Reporting Information [Line Items]
Net sales	517	554	1,542	1,619
Industrial | Performance Coatings
Segment Reporting Information [Line Items]
Net sales	311	323	944	993
Light Vehicle | Mobility Coatings
Segment Reporting Information [Line Items]
Net sales	364	340	1,066	1,036
Commercial Vehicle | Mobility Coatings
Segment Reporting Information [Line Items]
Net sales	$ 96	$ 103	$ 303	$ 317