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v3.19.3.a.u2

Basis of Presentation and Summary of Significant Accounting Policies (Detail) - USD ($) $ in Millions |  |  |  |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | --- | ---
Nov. 12, 2019 | Jul. 03, 2019 | Feb. 01, 2019 | Jun. 07, 2018 | Jun. 29, 2019 | Mar. 30, 2019 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |
Business acquisition and other investments, net of cash acquired |  |  |  |  |  |  | $ 147.1 | $ 180.8 | $ 0.0
Foreign Currency Translation and Transactions |  |  |  |  |  |  |  |  |
Foreign currency transaction net losses |  |  |  |  |  |  | $ 1.5 | 0.3 | $ 3.3
SPX Heat Transfer Business | Disposal Group, Not Discontinued Operations |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |
Wind-down charges recorded |  |  |  |  |  |  |  | 3.5 |
Proceeds from sale of intangible assets |  |  |  |  |  |  |  | 4.8 |
Gain on sale of intangible assets |  |  |  |  |  |  |  | 0.1 |
SPX Heat Transfer Business | Disposal Group, Not Discontinued Operations | Buildings |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |
Proceeds from sale of manufacturing facility |  |  |  |  |  | $ 5.5 |  |  |
Gain (loss) on disposition of manufacturing facility |  |  |  |  |  | 0.3 |  |  |
Cost of Sales | SPX Heat Transfer Business | Disposal Group, Not Discontinued Operations |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |
Wind-down charges related to inventories |  |  |  |  |  |  |  | 0.9 |
Special Charges, Net | SPX Heat Transfer Business | Disposal Group, Not Discontinued Operations |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |
Wind-down charges related to impairment of machinery and equipment |  |  |  |  |  |  |  | 0.6 |
Wind-down charges related to severance costs |  |  |  |  |  |  |  | $ 2.0 |
Sabik Marine |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |
Business acquisition and other investments, net of cash acquired |  |  | $ 77.2 |  |  |  |  |  |
Cash acquired |  |  | $ 0.6 |  |  |  |  |  |
SGS Refrigeration Inc. |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |
Cash paid to acquire business |  | $ 10.0 |  |  |  |  |  |  |
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] |  |  |  |  |  |  |  |  |
Business acquisition and other investments, net of cash acquired |  |  |  |  |  | 16.4 |  |  |
Cash acquired |  |  |  |  |  | $ 0.3 |  |  |
Cues, Inc. |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |
Business acquisition and other investments, net of cash acquired |  |  |  | $ 164.4 | $ 164.4 |  |  |  |
Cash acquired |  |  |  | $ 20.6 | $ 20.6 |  |  |  |

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