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BASIS OF PRESENTATION - Narrative (Details) - USD ($) $ in Millions |  |  |  |  | 3 Months Ended | 9 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jul. 03, 2019 | Feb. 01, 2019 | Jun. 07, 2018 | Mar. 01, 2018 | Sep. 28, 2019 | Mar. 30, 2019 | Sep. 29, 2018 | Jun. 30, 2018 | Sep. 28, 2019 | Sep. 29, 2018 | Jul. 31, 2018 | May 31, 2018 | Apr. 30, 2018
Discontinued Operations |  |  |  |  |  |  |  |  |  |  |  |  |
Gain on settlement |  |  |  |  | $ 0.3 |  | $ (0.2) |  | $ (1.3) | $ 3.1 |  |  |
Severance Costs |  |  |  |  |  |  | 0.8 |  |  |  |  |  |
Business acquisition, net of cash acquired |  |  |  |  |  |  |  |  | $ 87.2 | 182.6 |  |  |
Length of second and third quarter |  |  |  |  |  |  |  |  | 91 days |  |  |  |
Balcke Durr Business |  |  |  |  |  |  |  |  |  |  |  |  |
Discontinued Operations |  |  |  |  |  |  |  |  |  |  |  |  |
Gain on settlement |  |  |  |  |  |  |  | $ 3.8 |  |  |  |  |
Balcke Durr Business | Discontinued Operations, Disposed of by Sale |  |  |  |  |  |  |  |  |  |  |  |  |
Discontinued Operations |  |  |  |  |  |  |  |  |  |  |  |  |
Gain on settlement |  |  |  |  | $ 0.3 |  | $ (0.2) |  | $ (1.3) | $ (0.7) |  |  |
SPX Heat Transfer Business | Disposal Group, Not Discontinued Operations |  |  |  |  |  |  |  |  |  |  |  |  |
Discontinued Operations |  |  |  |  |  |  |  |  |  |  |  |  |
Wind-down charges |  |  |  |  |  |  |  | 2.0 |  |  |  |  |
Proceeds from sale of intangible assets |  |  |  |  |  |  |  | 4.8 |  |  |  |  |
Gain on disposition of intangible assets |  |  |  |  |  |  |  | 0.1 |  |  |  |  |
Schonstedt |  |  |  |  |  |  |  |  |  |  |  |  |
Discontinued Operations |  |  |  |  |  |  |  |  |  |  |  |  |
Business acquisition, net of cash acquired |  |  |  | $ 16.4 |  |  |  |  |  |  |  |  |
Cash acquired |  |  |  | $ 0.3 |  |  |  |  |  |  |  |  |
Cues, Inc. |  |  |  |  |  |  |  |  |  |  |  |  |
Discontinued Operations |  |  |  |  |  |  |  |  |  |  |  |  |
Business acquisition, net of cash acquired |  |  | $ 164.4 |  |  |  |  |  |  |  |  |  |
Cash acquired |  |  | $ 20.6 |  |  |  |  |  |  |  |  |  |
Sabik Marine |  |  |  |  |  |  |  |  |  |  |  |  |
Discontinued Operations |  |  |  |  |  |  |  |  |  |  |  |  |
Business acquisition, net of cash acquired |  | $ 77.2 |  |  |  |  |  |  |  |  |  |  |
Cash acquired |  | $ 0.6 |  |  |  |  |  |  |  |  |  |  |
SGS Refrigeration Inc. |  |  |  |  |  |  |  |  |  |  |  |  |
Discontinued Operations |  |  |  |  |  |  |  |  |  |  |  |  |
Cash to acquire business | $ 10.0 |  |  |  |  |  |  |  |  |  |  |  |
Deferred payment | $ 1.5 |  |  |  |  |  |  |  |  |  |  |  |
Building | SPX Heat Transfer Business | Disposal Group, Not Discontinued Operations |  |  |  |  |  |  |  |  |  |  |  |  |
Discontinued Operations |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from sale of manufacturing facility |  |  |  |  |  | $ 5.5 |  |  |  |  |  |  |
Gain (loss) on disposition of manufacturing facility |  |  |  |  |  | $ 0.3 |  |  |  |  |  |  |
Subsidiary of mutares AG (the Buyer) | Balcke Durr Business | Discontinued Operations, Disposed of by Sale |  |  |  |  |  |  |  |  |  |  |  |  |
Discontinued Operations |  |  |  |  |  |  |  |  |  |  |  |  |
Net payment from Buyer |  |  |  |  |  |  |  |  |  |  | $ 1.0 | $ 2.0 | $ 3.0
Cost of Sales | SPX Heat Transfer Business | Disposal Group, Not Discontinued Operations |  |  |  |  |  |  |  |  |  |  |  |  |
Discontinued Operations |  |  |  |  |  |  |  |  |  |  |  |  |
Write-down of inventories |  |  |  |  |  |  |  | 0.9 |  |  |  |  |
Special Charges, Net | SPX Heat Transfer Business | Disposal Group, Not Discontinued Operations |  |  |  |  |  |  |  |  |  |  |  |  |
Discontinued Operations |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment of machinery and equipment |  |  |  |  |  |  |  | 0.6 |  |  |  |  |
Severance costs |  |  |  |  |  |  |  | $ 0.5 |  |  |  |  |

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