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Acquisitions, Discontinued Operations, and Other Dispositions - Sale of Blacke Durr Business (Details) € in Millions, $ in Millions		3 Months Ended	12 Months Ended
	Dec. 30, 2016 USD ($)	Jun. 30, 2018 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2018 EUR (€)	Dec. 30, 2016 EUR (€)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash consideration, exclusive of cash transferred					$ 30.2
Gain (loss) on sale of business, net of tax			$ (3.0)	$ (5.3)	$ 81.3
Balcke Durr
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain (loss) on sale of business, net of tax		$ (3.8)
Balcke Durr \| Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain (loss) on sale of business, net of tax		$ (3.8)
Subsidiary of mutares AG (the Buyer) \| Balcke Durr \| Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash consideration, exclusive of cash transferred	$ 0.1
Cash transferred with sale of business	21.1
Gain (loss) on sale of business, net of tax	78.6
Amount of guarantees \| €						€ 31.7	€ 79.0
Bank and Surety Bonds \| Subsidiary of mutares AG (the Buyer) \| Balcke Durr \| Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Amount of guarantees \| €						21.8	79.0
Guarantees and Bonds \| Subsidiary of mutares AG (the Buyer) \| Balcke Durr \| Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain (loss) on sale of business, net of tax	$ 5.1
Balcke-Durr GmbH \| Subsidiary of mutares AG (the Buyer) \| Balcke Durr \| Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash collateral \| €						3.0	4.0
mutares AG \| Indemnification Agreement \| SPXC \| Balcke Durr \| Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Amount of guarantees \| €						€ 5.0	€ 5.0