Segment Information - Segment Results (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 28, 2024	Jun. 30, 2023	Jun. 28, 2024	Jun. 30, 2023	Dec. 31, 2023
Segment Reporting Information [Line Items]
Sales	$ 633.1	$ 662.4	$ 1,256.7	$ 1,289.6
Operating profit (loss)	(1,153.3)	78.9	(1,105.2)	151.0
Other (expense) income, net	(1.1)	7.1	(1.0)	7.4
Interest expense, net	(11.7)	(17.4)	(24.6)	(34.1)
(Loss) income before income taxes	(1,166.1)	68.6	(1,130.8)	124.3
Identifiable assets	5,438.1		5,438.1		$ 6,605.1
Other
Segment Reporting Information [Line Items]
Operating profit (loss)	(1,185.8)	(25.2)	(1,217.5)	(56.7)
Identifiable assets	1,081.2		1,081.2		988.8
Specialty Products & Technologies
Segment Reporting Information [Line Items]
Sales	415.1	417.0	823.8	827.0
Specialty Products & Technologies | Operating segments
Segment Reporting Information [Line Items]
Sales	415.1	417.0	823.8	827.0
Operating profit (loss)	6.0	55.7	50.2	126.8
Identifiable assets	2,435.9		2,435.9		3,277.7
Equipment & Consumables
Segment Reporting Information [Line Items]
Sales	218.0	245.4	432.9	462.6
Equipment & Consumables | Operating segments
Segment Reporting Information [Line Items]
Sales	218.0	245.4	432.9	462.6
Operating profit (loss)	26.5	$ 48.4	62.1	$ 80.9
Identifiable assets	$ 1,921.0		$ 1,921.0		$ 2,338.6