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Segment Reporting (Details) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2019 USD ($)	Sep. 30, 2019 USD ($)	Jun. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Sep. 30, 2018 USD ($)	Jun. 30, 2018 USD ($)	Mar. 31, 2018 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Segment Reporting [Abstract]
Number of operating segments									4
Number of reportable segments									1
Number of customers exceeding ten percent of net sales									0
Concentration Risk, Percentage									10.00%
Revenues from External Customers and Long-Lived Assets
Net Sales	$ 294.8	$ 280.7	$ 299.7	$ 262.5	$ 285.2	$ 273.3	$ 292.2	$ 272.8	$ 1,137.6	$ 1,123.5	$ 1,003.1
Long-Lived Assets	517.7				508.4				517.7	508.4	559.7
Equipment
Revenues from External Customers and Long-Lived Assets
Net Sales									742.7	730.0	636.9
Parts and consumables
Revenues from External Customers and Long-Lived Assets
Net Sales									221.0	222.3	202.5
Service and other
Revenues from External Customers and Long-Lived Assets
Net Sales									148.2	141.4	132.3
Specialty surface coatings
Revenues from External Customers and Long-Lived Assets
Net Sales									25.7	29.8	31.4
U.S.
Revenues from External Customers and Long-Lived Assets
Net Sales									609.6	579.8	543.7
Long-Lived Assets	114.5				107.3				114.5	107.3	108.0
Other Americas
Revenues from External Customers and Long-Lived Assets
Net Sales									112.8	111.2	96.6
Long-Lived Assets	12.8				11.3				12.8	11.3	24.7
Americas
Revenues from External Customers and Long-Lived Assets
Net Sales									722.4	691.0	640.3
Long-Lived Assets	127.3				118.6				127.3	118.6	132.7
ITALY
Revenues from External Customers and Long-Lived Assets
Long-Lived Assets	325.2				355.5				325.2	355.5	393.9
Other Europe, Middle East, Africa
Revenues from External Customers and Long-Lived Assets
Long-Lived Assets	28.6				30.2				28.6	30.2	28.4
Europe, Middle East, Africa
Revenues from External Customers and Long-Lived Assets
Net Sales									307.6	335.6	273.7
Long-Lived Assets	353.8				385.7				353.8	385.7	422.3
Asia Pacific
Revenues from External Customers and Long-Lived Assets
Net Sales									107.6	96.9	89.1
Long-Lived Assets	$ 36.6				$ 4.1				$ 36.6	$ 4.1	$ 4.7

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The number of customers exceeding ten percent of net sales.

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