Segment Information (Segment Results) (Details) $ in Millions	3 Months Ended	9 Months Ended
Oct. 02, 2020 USD ($)	Sep. 27, 2019 USD ($)	Oct. 02, 2020 USD ($) Segment	Sep. 27, 2019 USD ($)	Dec. 31, 2019 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments (in segments) \| Segment			2
Number of operating segments (in segments) \| Segment			2
Sales	$ 640.5	$ 659.3	$ 1,549.7	$ 2,031.1
Operating (loss) profit	69.4	78.7	(63.5)	199.5
Other income	0.2	0.2	0.4	1.6
Interest expense, net	(23.4)	(0.2)	(41.2)	(0.2)
Income (loss) before income taxes	46.2	78.7	(104.3)	200.9
Identifiable assets	6,605.7		6,605.7		$ 6,158.3
Other
Segment Reporting Information [Line Items]
Operating (loss) profit	(18.8)	(7.0)	(67.2)	(23.8)
Identifiable assets	730.2		730.2		239.2
Specialty Products & Technologies
Segment Reporting Information [Line Items]
Sales	316.9	317.8	774.1	1,013.9
Identifiable assets	3,716.1		3,716.1		3,662.5
Specialty Products & Technologies \| Operating segments
Segment Reporting Information [Line Items]
Sales	316.9	317.8	774.1	1,013.9
Operating (loss) profit	43.2	54.6	31.8	175.2
Equipment & Consumables
Segment Reporting Information [Line Items]
Sales	323.6	341.5	775.6	1,017.2
Identifiable assets	2,159.4		2,159.4		$ 2,256.6
Equipment & Consumables \| Operating segments
Segment Reporting Information [Line Items]
Sales	323.6	341.5	775.6	1,017.2
Operating (loss) profit	$ 45.0	$ 31.1	$ (28.1)	$ 48.1

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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