Nature of Operations and Significant Accounting Policies (Narrative) (Details) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2021 USD ($) segment shares	Dec. 31, 2020 USD ($) shares	Dec. 31, 2019 USD ($) shares	May 16, 2021 USD ($)	Dec. 31, 2018 USD ($)
Property, Plant and Equipment [Line Items]
Number of reporting segments | segment	4
Number of stock options excluded from computation of earnings per share (in shares) | shares	1.2	2.1	1.2
Allowance for doubtful accounts receivable	$ 10.4	$ 10.9
Increase (decrease) in cost of sales by changes in level of LIFO inventories	$ 2.1	$ 2.3	$ (1.9)
Percentage of inventories cost, LIFO method	28.50%	29.30%
Higher value of LIFO inventories if valued under FIFO	$ 28.2	$ 26.2
Reserve for excess and obsolete inventory	98.5	95.7
Depreciation expense	$ 73.6	73.7	68.1
Number of reporting units | segment	7
Estimated cost of capital, minimum	9.50%
Estimated cost of capital, maximum	11.50%
Estimated cost of capital, weighted	10.70%
Additions		106.1
Adjustments to purchase price allocations	$ (0.1)	5.6
Intangible assets, net	465.9	519.1	$ 503.7		$ 478.3
Intangibles with indefinite useful lives	70.6	70.9
Payment & Merchandising Technologies
Property, Plant and Equipment [Line Items]
Additions		0.0
Adjustments to purchase price allocations	0.0	5.6
Process Flow Technologies
Property, Plant and Equipment [Line Items]
Additions		106.1
Adjustments to purchase price allocations	$ (0.1)	$ 0.0
Discontinued Operations, Held-for-sale | Engineered Materials
Property, Plant and Equipment [Line Items]
Consideration from sale of discontinued operation				$ 360.0
Minimum | Buildings And Improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, estimated useful life- minimum, years	10 years
Minimum | Machinery and Equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, estimated useful life- minimum, years	3 years
Maximum | Buildings And Improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, estimated useful life- minimum, years	25 years
Maximum | Machinery and Equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, estimated useful life- minimum, years	10 years