Other Intangible Assets (Narrative) (Details) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Customer relationships
Acquired Finite And Indefinite Lived Intangible Assets [Line Items]
Finite-lived intangible assets	$ 83.4	$ 75.5
Customer relationships | Heads & All Threads Ltd.
Acquired Finite And Indefinite Lived Intangible Assets [Line Items]
Finite-lived intangible assets	2.0
Customer relationships | GH Electrotermia S.A.
Acquired Finite And Indefinite Lived Intangible Assets [Line Items]
Finite-lived intangible assets		3.6
Technology
Acquired Finite And Indefinite Lived Intangible Assets [Line Items]
Finite-lived intangible assets	23.6	23.0
Technology | GH Electrotermia S.A.
Acquired Finite And Indefinite Lived Intangible Assets [Line Items]
Finite-lived intangible assets		6.5
Indefinite-lived tradenames
Acquired Finite And Indefinite Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets	$ 23.7	22.4
Indefinite-lived tradenames | GH Electrotermia S.A.
Acquired Finite And Indefinite Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets		$ 4.8