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Fair Value (Details) € in Millions |  | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Dec. 30, 2016 USD ($) | Apr. 01, 2017 USD ($) | Dec. 31, 2016 USD ($) | Apr. 02, 2016 USD ($) | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($) | Dec. 31, 2017 EUR (€) | Dec. 30, 2016 EUR (€)
Fair Value Disclosures [Abstract] |  |  |  |  |  |  |  |  |
Liability transfers between levels |  |  |  |  | $ 0 | $ 0 |  |  |
Asset transfers between levels |  |  |  |  | 0 | 0 |  |  |
Assets and liabilities measured at fair value on a recurring basis |  |  |  |  |  |  |  |  |
Gain (loss) on sale of business, net of tax |  |  |  |  | (5,300,000) | $ 81,300,000 | $ 5,200,000 |  |
SPX Heat Transfer Business |  |  |  |  |  |  |  |  |
Assets and liabilities measured at fair value on a recurring basis |  |  |  |  |  |  |  |  |
Impairment charge |  |  | $ 23,900,000 |  |  |  |  |  |
SPX Heat Transfer Business | Trademarks |  |  |  |  |  |  |  |  |
Assets and liabilities measured at fair value on a recurring basis |  |  |  |  |  |  |  |  |
Impairment charge related to trademarks |  | $ 30,100,000 | 2,200,000 | $ 4,000,000 |  |  |  |  |
Discontinued Operations, Disposed of by Sale | Balcke Durr |  |  |  |  |  |  |  |  |
Assets and liabilities measured at fair value on a recurring basis |  |  |  |  |  |  |  |  |
Gain (loss) on sale of business, net of tax |  |  | $ 78,600,000 |  |  |  |  |  |
Discontinued Operations, Disposed of by Sale | Subsidiary of matures AG (the Buyer) | Balcke Durr |  |  |  |  |  |  |  |  |
Assets and liabilities measured at fair value on a recurring basis |  |  |  |  |  |  |  |  |
Amount of guarantees |  |  |  |  | 76,100,000 |  |  | € 76.1 | € 79.0
Gain (loss) on sale of business, net of tax | $ 78,600,000 |  |  |  |  |  |  |  |
Discontinued Operations, Disposed of by Sale | Subsidiary of matures AG (the Buyer) | Balcke-Durr GmbH | Balcke Durr |  |  |  |  |  |  |  |  |
Assets and liabilities measured at fair value on a recurring basis |  |  |  |  |  |  |  |  |
Cash collateral | € |  |  |  |  |  |  |  | 4.0 | 4.0
Discontinued Operations, Disposed of by Sale | Subsidiary of matures AG (the Buyer) | Bank and Surety Bonds | Balcke Durr |  |  |  |  |  |  |  |  |
Assets and liabilities measured at fair value on a recurring basis |  |  |  |  |  |  |  |  |
Amount of guarantees |  |  |  |  | $ 47,900,000 |  |  | 47.9 | 79.0
Discontinued Operations, Disposed of by Sale | Subsidiary of matures AG (the Buyer) | Guarantees and Bonds | Balcke Durr |  |  |  |  |  |  |  |  |
Assets and liabilities measured at fair value on a recurring basis |  |  |  |  |  |  |  |  |
Gain (loss) on sale of business, net of tax | $ 5,100,000 |  |  |  |  |  |  |  |
Discontinued Operations, Disposed of by Sale | SPXC | Indemnification Agreement | mutares AG | Balcke Durr |  |  |  |  |  |  |  |  |
Assets and liabilities measured at fair value on a recurring basis |  |  |  |  |  |  |  |  |
Amount of guarantees | € |  |  |  |  |  |  |  | € 3.0 | € 5.0

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