Acquisitions and Discontinued Operations - Sale of Blacke Durr Business (Details) € in Millions, $ in Millions	12 Months Ended
Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2018 EUR (€)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain (loss) on disposition of discontinued operations, net of tax	$ (3.7)	$ (4.4)	$ 3.0
Balcke Dürr \| Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net consideration			3.6	€ 3.0
Gain (loss) on disposition of discontinued operations, net of tax	$ 0.0	$ 0.0	$ 3.8

Amount after tax of gain (loss) not previously recognized resulting from the disposal of a discontinued operation.

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