Goodwill and Identifiable Intangible Assets - Schedule of Goodwill (Details) $ in Millions	3 Months Ended
	Mar. 31, 2022 USD ($)
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 1,592.7
Purchase accounting adjustments	1.8
Foreign currency translation	(20.1)
Goodwill, ending balance	1,574.4
Performance Coatings
Goodwill [Roll Forward]
Goodwill, beginning balance	1,513.4
Purchase accounting adjustments	1.8
Foreign currency translation	(19.4)
Goodwill, ending balance	1,495.8
Mobility Coatings
Goodwill [Roll Forward]
Goodwill, beginning balance	79.3
Purchase accounting adjustments	0.0
Foreign currency translation	(0.7)
Goodwill, ending balance	$ 78.6