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Basis of Presentation and Summary of Significant Accounting Policies - Acquisitions and Divestitures (Details) - USD ($) $ in Millions |  |  |  |  |  |  |  | 12 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Nov. 11, 2020 | Sep. 02, 2020 | Nov. 12, 2019 | Jul. 03, 2019 | Feb. 01, 2019 | Jun. 07, 2018 | Mar. 01, 2018 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Mar. 28, 2020
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Business acquisition and other investments, net of cash acquired |  |  |  |  |  |  |  | $ 104.4 | $ 147.1 | $ 180.8 |
Foreign Currency Translation and Transactions |  |  |  |  |  |  |  |  |  |  |
Foreign currency transaction net losses |  |  |  |  |  |  |  | 1.3 | $ (1.5) | $ (0.3) |
ULC Robotics |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cash paid to acquire business |  | $ 89.2 |  |  |  |  |  |  |  |  |
Cash acquired |  | 4.0 |  |  |  |  |  |  |  |  |
Deferred payment |  | $ 45.0 |  |  |  |  |  | 45.0 |  |  |
Contingent consideration |  |  |  |  |  |  |  | 24.3 |  |  |
Sensors & Software Inc |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cash paid to acquire business | $ 15.2 |  |  |  |  |  |  |  |  |  |
Cash acquired | 0.3 |  |  |  |  |  |  |  |  |  |
Deferred payment | $ 3.9 |  |  |  |  |  |  | 3.9 |  |  |
Contingent consideration |  |  |  |  |  |  |  | $ 0.7 |  |  |
Sabik Marine |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cash acquired |  |  |  |  | $ 0.6 |  |  |  |  |  |
Business acquisition and other investments, net of cash acquired |  |  |  |  | $ 77.2 |  |  |  |  |  |
SGS Refrigeration Inc. |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cash paid to acquire business |  |  |  | $ 11.5 |  |  |  |  |  |  |
Deferred payment |  |  |  |  |  |  |  |  |  |  | $ 1.5
Patterson-Kelley, LLC |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cash paid to acquire business |  |  | $ 59.9 |  |  |  |  |  |  |  |
Schonstedt Instrument Company |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cash acquired |  |  |  |  |  |  | $ 0.3 |  |  |  |
Business acquisition and other investments, net of cash acquired |  |  |  |  |  |  | $ 16.4 |  |  |  |
Cues, Inc. |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cash acquired |  |  |  |  |  | $ 20.6 |  |  |  |  |
Business acquisition and other investments, net of cash acquired |  |  |  |  |  | $ 164.4 |  |  |  |  |

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