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Discontinued Operations and Other Businesses Sold - Income for Discontinued Operations (Details) € in Thousands, $ in Millions |  |  |  | 12 Months Ended
--- | --- | --- | --- | ---
Oct. 26, 2023 USD ($) | Oct. 26, 2023 EUR (€) | Aug. 18, 2023 USD ($) | Jun. 11, 2023 USD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2023 EUR (€) | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($)
Other expenses: |  |  |  |  |  |  |  |
Total loss from discontinued operations, net of tax |  |  |  |  | $ (0.6) |  | $ (57.6) | $ 0.0
Proceeds from sale of CAIRE |  |  |  |  | 474.8 |  | 0.0 | $ 0.0
Assets Disposed of by Sales |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations |  |  |  |  |  |  |  |
Sales |  |  |  |  | 58.8 |  | 0.0 |
Cost of sales |  |  |  |  | 41.4 |  | 0.0 |
Gross profit |  |  |  |  | 17.4 |  | 0.0 |
Selling, general, and administrative expenses |  |  |  |  | 7.4 |  | 74.8 |
Operating income |  |  |  |  | 10.0 |  | (74.8) |
Other expenses: |  |  |  |  |  |  |  |
Interest expense, net |  |  |  |  | 8.9 |  | 0.0 |
Foreign currency loss |  |  |  |  | 0.1 |  | 0.0 |
Other expense, net |  |  |  |  | 9.0 |  | 0.0 |
Income (loss) before income taxes |  |  |  |  | 1.0 |  | (74.8) |
Income tax expense (benefit) |  |  |  |  | 1.2 |  | (17.2) |
Loss from discontinued operations before gain on sale of business |  |  |  |  | (0.2) |  | (57.6) |
Loss on sale of business, net of taxes |  |  |  |  | 0.4 |  | 0.0 |
Total loss from discontinued operations, net of tax |  |  |  |  | (0.6) |  | $ (57.6) |
Tax on loss on sale of business |  |  |  |  | 5.4 |  |  |
Assets Disposed of by Sales | Roots Rotary Blowers Business |  |  |  |  |  |  |  |
Other expenses: |  |  |  |  |  |  |  |
Gain (loss) on sale before tax |  |  |  |  | 5.0 |  |  |
Proceeds from sale of CAIRE |  |  | $ 291.9 |  |  |  |  |
Assets Disposed of by Sales | Roots Rotary Blowers Business | Scenario, Plan |  |  |  |  |  |  |  |
Other expenses: |  |  |  |  |  |  |  |
Proceeds from sale of CAIRE |  |  |  | $ 300.0 |  |  |  |
Assets Disposed of by Sales | Cryo Diffusion |  |  |  |  |  |  |  |
Other expenses: |  |  |  |  |  |  |  |
Gain (loss) on sale before tax |  |  |  |  | $ (6.1) | € (5,700) |  |
Assets Disposed of by Sales | Cryo Diffusion | Scenario, Plan |  |  |  |  |  |  |  |
Other expenses: |  |  |  |  |  |  |  |
Proceeds from sale of CAIRE | $ 4.5 | € 4,250 |  |  |  |  |  |

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