GOODWILL AND IDENTIFIABLE INTANGIBLE ASSETS - Schedule of Goodwill (Details) $ in Millions	9 Months Ended
	Sep. 30, 2025 USD ($)
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 1,640
Goodwill from acquisitions	2
Purchase accounting adjustments	1
Foreign currency translation	126
Goodwill, ending balance	1,769
Performance Coatings
Goodwill [Roll Forward]
Goodwill, beginning balance	1,566
Goodwill from acquisitions	2
Purchase accounting adjustments	1
Foreign currency translation	120
Goodwill, ending balance	1,689
Mobility Coatings
Goodwill [Roll Forward]
Goodwill, beginning balance	74
Goodwill from acquisitions	0
Purchase accounting adjustments	0
Foreign currency translation	6
Goodwill, ending balance	$ 80