Other Intangible Assets (Narrative) (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Customer relationships
Acquired Finite And Indefinite Lived Intangible Assets [Line Items]
Finite-lived intangible assets	$ 86.0	$ 83.4
Technology
Acquired Finite And Indefinite Lived Intangible Assets [Line Items]
Finite-lived intangible assets	22.9	23.6
Indefinite-lived tradenames
Acquired Finite And Indefinite Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets	$ 24.1	$ 23.7