Goodwill and Identifiable Intangible Assets - Schedule of Goodwill (Details) $ in Millions	9 Months Ended
	Sep. 30, 2022 USD ($)
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 1,592.7
Purchase accounting adjustments	2.5
Foreign currency translation	(204.8)
Goodwill, ending balance	1,390.4
Performance Coatings
Goodwill [Roll Forward]
Goodwill, beginning balance	1,513.4
Purchase accounting adjustments	2.5
Foreign currency translation	(196.2)
Goodwill, ending balance	1,319.7
Mobility Coatings
Goodwill [Roll Forward]
Goodwill, beginning balance	79.3
Purchase accounting adjustments	0.0
Foreign currency translation	(8.6)
Goodwill, ending balance	$ 70.7