Summary of Significant Accounting Policies (Details) $ in Millions	3 Months Ended
	Mar. 31, 2018 USD ($) Segment	Mar. 31, 2017 USD ($)
Accounting Policies [Abstract]
Number of operating segments | Segment	2
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Selling, engineering, general and administrative expenses	$ 41.8	$ 31.4
Other expense (income), net	$ 0.1	(0.2)
ASU 2017-07 | Selling, engineering, general and administrative expenses
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Impact of Adoption		(0.1)
ASU 2017-07 | Other income
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Impact of Adoption		0.1
As Reported
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Selling, engineering, general and administrative expenses		31.5
Other expense (income), net		$ (0.3)