Segment Information - Segment Results (Details) - USD ($) $ in Millions	3 Months Ended
	Apr. 02, 2021	Apr. 03, 2020	Dec. 31, 2020
Segment Reporting Information [Line Items]
Sales	$ 709.2	$ 547.2
Operating profit (loss)	108.3	(25.0)
Other income	0.3	0.1
Interest expense, net	(18.0)	(3.3)
Income (loss) before income taxes	90.6	(28.2)
Identifiable assets	6,321.9		$ 6,876.0
Other
Segment Reporting Information [Line Items]
Operating profit (loss)	(30.8)	(13.5)
Identifiable assets	478.7		924.5
Specialty Products & Technologies
Segment Reporting Information [Line Items]
Sales	366.5	272.6
Specialty Products & Technologies | Operating segments
Segment Reporting Information [Line Items]
Sales	366.5	272.6
Operating profit (loss)	80.5	7.8
Identifiable assets	3,700.1		3,773.3
Equipment & Consumables
Segment Reporting Information [Line Items]
Sales	342.7	274.6
Equipment & Consumables | Operating segments
Segment Reporting Information [Line Items]
Sales	342.7	274.6
Operating profit (loss)	58.6	$ (19.3)
Identifiable assets	$ 2,143.1		$ 2,178.2