Equity - Schedule of Components of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Equity [Abstract]
Foreign currency translation	$ (52.4)	$ (110.8)
Derivative instrument fair market value, net of income taxes of $(0.3) and $(0.3)	0.1	(0.3)
Employee pension and postretirement benefit adjustments, net of income taxes of $(14.9) and $(19.0)	(45.1)	(51.8)
Accumulated other comprehensive loss	$ (97.4)	$ (162.9)