Segment Information (Financial Information By Reportable Segment) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Net sales	$ 770.5	$ 833.5	$ 796.4	$ 779.6	$ 683.6	$ 686.5	$ 644.3	$ 746.9	$ 3,180.0	$ 2,761.3	$ 3,074.5
Operating profit	87.1	$ 138.2	$ 136.9	$ 140.1	53.9	$ 75.9	$ 28.7	$ 81.7	502.3	240.2	183.1
Asbestos provision, net									0.0	0.0	229.0
Environmental provision, net									0.0	0.0	18.9
Capital expenditures:									51.7	32.9	64.4
Depreciation and amortization									119.5	123.8	107.9
Goodwill	1,412.5				1,437.7				1,412.5	1,437.7	1,301.1
Assets:	4,486.6				4,615.0				4,486.6	4,615.0
Assets held for sale	220.5				217.3				220.5	217.3
Corporate Segment
Segment Reporting Information [Line Items]
Capital expenditures:									0.2	0.1	0.4
Depreciation and amortization									1.5	2.1	3.1
Assets:	324.5				482.4				324.5	482.4
Corporate
Segment Reporting Information [Line Items]
Operating profit									(97.7)	(58.8)	(67.4)
Asbestos provision, net									0.0	0.0	(229.0)
Environmental provision, net									0.0	0.0	(18.9)
Aerospace & Electronics
Segment Reporting Information [Line Items]
Net sales									638.3	650.7	798.8
Operating profit									110.0	100.7	189.4
Capital expenditures:									14.1	9.8	20.0
Depreciation and amortization									14.7	14.2	13.5
Goodwill	202.5				202.5				202.5	202.5	202.4
Assets:	604.7				593.9				604.7	593.9
Process Flow Technologies
Segment Reporting Information [Line Items]
Net sales									1,196.6	1,005.8	1,117.4
Operating profit									182.5	97.7	131.7
Capital expenditures:									18.8	13.7	23.4
Depreciation and amortization									22.0	21.6	14.2
Goodwill	349.4				360.0				349.4	360.0	240.9
Assets:	1,240.4				1,106.1				1,240.4	1,106.1
Payment & Merchandising Technologies
Segment Reporting Information [Line Items]
Net sales									1,345.1	1,104.8	1,158.3
Operating profit									307.5	100.6	177.3
Capital expenditures:									18.6	9.3	20.6
Depreciation and amortization									81.3	85.9	77.1
Goodwill	860.6				875.2				860.6	875.2	$ 857.8
Assets:	$ 2,096.5				$ 2,215.3				$ 2,096.5	$ 2,215.3