Goodwill and Identifiable Intangible Assets - Schedule of Goodwill (Details) $ in Millions	3 Months Ended
	Mar. 31, 2023 USD ($)
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 1,498.0
Purchase accounting adjustments	(0.4)
Foreign currency translation	26.0
Goodwill, ending balance	1,523.6
Performance Coatings
Goodwill [Roll Forward]
Goodwill, beginning balance	1,422.5
Purchase accounting adjustments	(0.4)
Foreign currency translation	24.9
Goodwill, ending balance	1,447.0
Mobility Coatings
Goodwill [Roll Forward]
Goodwill, beginning balance	75.5
Purchase accounting adjustments	0.0
Foreign currency translation	1.1
Goodwill, ending balance	$ 76.6