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Segment Information (Segment Results) (Details) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2019 USD ($)	Sep. 27, 2019 USD ($)	Jun. 28, 2019 USD ($)	Mar. 29, 2019 USD ($)	Dec. 31, 2018 USD ($)	Sep. 28, 2018 USD ($)	Jun. 29, 2018 USD ($)	Mar. 30, 2018 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($) segment	Dec. 31, 2017 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments (in segments) \| segment										2
Sales	$ 720.5	$ 659.3	$ 712.1	$ 659.7	$ 759.0	$ 679.5	$ 733.4	$ 672.6	$ 2,751.6	$ 2,844.5	$ 2,810.9
Operating profit:									277.5	298.4	386.6
Identifiable assets:	6,158.3				5,841.6				6,158.3	5,841.6	5,992.8
Depreciation and amortization:									128.5	130.0	121.4
Capital expenditures, gross:									77.8	72.2	48.9
Other
Segment Reporting Information [Line Items]
Operating profit:									(56.0)	(63.4)	(12.3)
Identifiable assets:	239.2				8.4				239.2	8.4	5.5
Depreciation and amortization:									1.7	1.2	1.0
Capital expenditures, gross:									6.8	3.1	0.9
Specialty Products & Technologies
Segment Reporting Information [Line Items]
Sales									1,342.7	1,369.8
Specialty Products & Technologies \| Operating segments
Segment Reporting Information [Line Items]
Sales									1,342.7	1,369.8	1,310.6
Operating profit:									227.7	241.3	246.0
Identifiable assets:	3,662.5				3,539.1				3,662.5	3,539.1	3,598.6
Depreciation and amortization:									75.4	76.9	71.8
Capital expenditures, gross:									51.5	42.2	30.3
Equipment & Consumables
Segment Reporting Information [Line Items]
Sales									1,408.9	1,474.7
Equipment & Consumables \| Operating segments
Segment Reporting Information [Line Items]
Sales									1,408.9	1,474.7	1,500.3
Operating profit:									105.8	120.5	152.9
Identifiable assets:	$ 2,256.6				$ 2,294.1				2,256.6	2,294.1	2,388.7
Depreciation and amortization:									51.4	51.9	48.6
Capital expenditures, gross:									$ 19.5	$ 26.9	$ 17.7