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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 |  |  |  |

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