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Fair Value (Details) € in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2020 EUR (€)	Nov. 11, 2020 USD ($)	Sep. 02, 2020 USD ($)	Dec. 30, 2016 EUR (€)
Assets and liabilities measured at fair value on a recurring basis
Realized gain on equity security	$ 8.6	$ 7.9
Distributions from equity security	3.5	2.6
Equity security, fair value	27.0	$ 21.9
ULC Robotics
Assets and liabilities measured at fair value on a recurring basis
Deferred payment	45.0				$ 45.0
Contingent consideration	24.3
Sensors & Software Inc
Assets and liabilities measured at fair value on a recurring basis
Deferred payment	3.9			$ 3.9
Contingent consideration	$ 0.7
Discontinued Operations, Disposed of by Sale | Subsidiary of mutares AG (the Buyer) | Balcke Dürr
Assets and liabilities measured at fair value on a recurring basis
Amount of guarantees | €			€ 0.0			€ 79.0
Discontinued Operations, Disposed of by Sale | Subsidiary of mutares AG (the Buyer) | Balcke-Durr GmbH | Balcke Dürr
Assets and liabilities measured at fair value on a recurring basis
Cash collateral | €			0.0			4.0
Discontinued Operations, Disposed of by Sale | Subsidiary of mutares AG (the Buyer) | Bank and Surety Bonds | Balcke Dürr
Assets and liabilities measured at fair value on a recurring basis
Amount of guarantees | €			2.9			79.0
Discontinued Operations, Disposed of by Sale | Subsidiary of mutares AG (the Buyer) | Indemnification Agreement | mutares AG | Balcke Dürr
Assets and liabilities measured at fair value on a recurring basis
Amount of guarantees | €			€ 1.0			€ 5.0

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