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FAIR VALUE (Details) € in Millions, $ in Millions | 3 Months Ended | 6 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Jun. 29, 2019 USD ($) | Mar. 30, 2019 USD ($) | Jun. 29, 2019 USD ($) | Jun. 29, 2019 EUR (€) | Jan. 01, 2018 USD ($) | Dec. 31, 2017 USD ($) | Dec. 30, 2016 EUR (€)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |  |
Security at cost | $ |  |  |  |  |  | $ 0.7 |
Security at fair value | $ | $ 21.9 |  | $ 21.9 |  | $ 16.6 |  |
Realized gain on fair value adjustment | $ | $ 1.6 |  | $ 7.9 |  |  |  |
Distribution | $ |  | $ 2.6 |  |  |  |  |
Discontinued Operations, Disposed of by Sale | Buyer | Balcke Durr Business |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |  |
Amount of guarantees | € |  |  |  | € 31.7 |  |  | € 79.0
Discontinued Operations, Disposed of by Sale | Buyer | Bank and Surety Bonds | Balcke Durr Business |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |  |
Amount of guarantees | € |  |  |  | 15.1 |  |  | 79.0
Discontinued Operations, Disposed of by Sale | Buyer | Balcke-Durr | Balcke Durr Business |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |  |
Cash collateral | € |  |  |  | 3.0 |  |  | 4.0
Discontinued Operations, Disposed of by Sale | Buyer | mutares AG | Indemnification Agreement | Balcke Durr Business |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |  |
Amount of guarantees | € |  |  |  |  |  |  | € 5.0
Discontinued Operations, Disposed of by Sale | SPXC | mutares AG | Indemnification Agreement | Balcke Durr Business |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |  |
Amount of guarantees | € |  |  |  | € 5.0 |  |  |
Accounting Standards Update 2016-01 |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |  |
Cumulative effect of new accounting principle in period of adoption | $ |  |  |  |  | $ 12.0 |  |

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