Accumulated Other Comprehensive Income (Loss) - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Accumulated Other Comprehensive Income (Loss) [Line Items]
Selling, general and administrative expense	$ 76.9	$ 70.8
Income tax provision (benefit)	0.4	(0.5)
Reclassification out of Accumulated Other Comprehensive Income | Pension and Other Postretirement Benefits
Accumulated Other Comprehensive Income (Loss) [Line Items]
Selling, general and administrative expense	1.6	1.3
Income tax provision (benefit)	$ 0.2	0.5
Reclassification out of Accumulated Other Comprehensive Income | Derivatives Designated as Hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Income tax provision (benefit)		0.2
Interest expense, net		$ 0.4