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Significant Accounting Policies - Additional Information (Details) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2017 USD ($)	Dec. 31, 2018 USD ($) Segment	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Significant Accounting Policies [Line Items]
Number of reportable segments | Segment		2
Cost of sales		$ 807.4	$ 677.3	$ 524.5
Selling, engineering, general and administrative expenses		159.1	144.3	119.5
Pension settlement charges	$ 6.1	0.0	6.1	0.0
Other expense (income), net		0.6	(0.8)	1.8
Foreign currency transaction (gain) loss		0.4	(1.3)	0.1
Depreciation expense		28.4	25.2	18.9
Goodwill impairment		0.0	0.0	0.0
Indefinite-lived intangible asset impairment		0.0	0.0	0.0
Deferred revenue	$ 2.9	3.0	2.9
Pension settlement charges (operating expense)
Significant Accounting Policies [Line Items]
Pension settlement charges			0.0	0.0
Selling, engineering, general and administrative expenses
Significant Accounting Policies [Line Items]
Research and development expenses		$ 13.0	13.0	13.4
Pension settlement charges (non-operating expense)
Significant Accounting Policies [Line Items]
Pension settlement charges			6.1	0.0
Building | Minimum
Significant Accounting Policies [Line Items]
Useful life		8 years
Building | Maximum
Significant Accounting Policies [Line Items]
Useful life		40 years
Machinery and Equipment | Minimum
Significant Accounting Policies [Line Items]
Useful life		3 years
Machinery and Equipment | Maximum
Significant Accounting Policies [Line Items]
Useful life		15 years
Leasehold Improvements
Significant Accounting Policies [Line Items]
Useful life description		over the shorter of the remaining life of the lease or the useful life of the improvement
Rental Equipment | Maximum
Significant Accounting Policies [Line Items]
Rental equipment operating lease term		5 years
As Reported
Significant Accounting Policies [Line Items]
Cost of sales			677.3	524.8
Selling, engineering, general and administrative expenses			144.7	122.3
Other expense (income), net			(1.2)	(1.3)
As Reported | Pension settlement charges (operating expense)
Significant Accounting Policies [Line Items]
Pension settlement charges			6.1	0.0
As Reported | Pension settlement charges (non-operating expense)
Significant Accounting Policies [Line Items]
Pension settlement charges			0.0	0.0
Accounting Standards Update 2017-07 | Cost of sales
Significant Accounting Policies [Line Items]
Impact of adoption			0.0	(0.3)
Accounting Standards Update 2017-07 | Pension settlement charges (operating expense)
Significant Accounting Policies [Line Items]
Impact of adoption			(6.1)	0.0
Accounting Standards Update 2017-07 | Selling, engineering, general and administrative expenses
Significant Accounting Policies [Line Items]
Impact of adoption			(0.4)	(2.8)
Accounting Standards Update 2017-07 | Pension settlement charges (non-operating expense)
Significant Accounting Policies [Line Items]
Impact of adoption			6.1	0.0
Accounting Standards Update 2017-07 | Non-operating expense
Significant Accounting Policies [Line Items]
Impact of adoption			$ 0.4	$ 3.1

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Amount before tax of foreign currency transaction realized and unrealized gain (loss) recognized in the income statement.

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