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Segment Information (Segment Results) (Details) $ in Millions	3 Months Ended
	Apr. 03, 2020 USD ($)	Apr. 03, 2020 USD ($) Segment	Apr. 03, 2020 USD ($) business_segment	Apr. 03, 2020 USD ($) segment	Mar. 29, 2019 USD ($)	Dec. 31, 2019 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments \| segment				2
Number of operating segments (in segments)		2	2
Sales	$ 547.2				$ 659.7
Operating profit	(25.0)				44.9
Other Nonoperating Income	0.1				0.1
Interest Expense	(3.3)				0.0
(Loss) income before income taxes	(28.2)				45.0
Assets	6,240.9	$ 6,240.9	$ 6,240.9	$ 6,240.9		$ 6,158.3
Other
Segment Reporting Information [Line Items]
Operating profit	(13.5)				(9.0)
Assets	390.8	390.8	390.8	390.8		239.2
Specialty Products & Technologies
Segment Reporting Information [Line Items]
Sales	272.6				348.8
Assets	3,661.7	3,661.7	3,661.7	3,661.7		3,662.5
Specialty Products & Technologies \| Operating segments
Segment Reporting Information [Line Items]
Sales	272.6				348.8
Operating profit	7.8				66.1
Equipment & Consumables
Segment Reporting Information [Line Items]
Sales	274.6				310.9
Assets	2,188.4	$ 2,188.4	$ 2,188.4	$ 2,188.4		$ 2,256.6
Equipment & Consumables \| Operating segments
Segment Reporting Information [Line Items]
Sales	274.6				310.9
Operating profit	$ (19.3)				$ (12.2)