Goodwill and Identifiable Intangible Assets - Schedule of Goodwill (Details) $ in Millions	6 Months Ended
	Jun. 30, 2015 USD ($)
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 1,001.1
Goodwill from acquisition	12.5
Foreign currency translation	(69.6)
Goodwill, ending balance	944.0
Performance Coatings [Member]
Goodwill [Roll Forward]
Goodwill, beginning balance	933.6
Goodwill from acquisition	12.5
Foreign currency translation	(64.8)
Goodwill, ending balance	881.3
Transportation Coatings [Member]
Goodwill [Roll Forward]
Goodwill, beginning balance	67.5
Goodwill from acquisition	0.0
Foreign currency translation	(4.8)
Goodwill, ending balance	$ 62.7