New and Recently Adopted Accounting Standards - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Jan. 01, 2018	Dec. 31, 2017
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Retained earnings	$ 1,949.6			$ 1,867.4
Cost of sales	1,334.5	$ 1,198.3
ASU 2014-09 | Difference between Revenue Guidance in Effect before and after Topic 606
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Retained earnings			$ 1.6
Cost of sales	$ 6.2
ASU 2017-07
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Reclassification of components of income from operation and interest expense, net and other		$ 0.3