Accumulated Other Comprehensive Income (Loss) (Components of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	Mar. 31, 2017	Dec. 31, 2016
Stockholders Equity Disclosure [Line Items]
Accumulated other comprehensive income (loss)	$ (276.9)	$ (286.4)
Company Common Shareholders [Member]
Stockholders Equity Disclosure [Line Items]
Foreign currency translation adjustment	(219.5)	(228.2)
Pension adjustments, net of tax	(57.4)	(58.2)
Accumulated other comprehensive income (loss)	(276.9)	(286.4)
Noncontrolling Interest [Member]
Stockholders Equity Disclosure [Line Items]
Foreign currency translation adjustment	(13.1)	(13.0)
Pension adjustments, net of tax	(1.3)	(1.3)
Accumulated other comprehensive income (loss)	$ (14.4)	$ (14.3)