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Other (Income) Expense, Net (Details) - USD ($) $ in Millions |  | 1 Months Ended | 3 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | ---
Oct. 30, 2019 | Dec. 31, 2018 | Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | May 31, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain on derecognition of subsidiary | $ 177.0 |  |  |  |  |  |  |  |  |  | $ 177.0 | $ 0.0 | $ 0.0 |
Restructuring expense |  |  | $ 31.0 | $ 14.0 | $ 13.0 | $ 14.0 | $ 23.0 | $ 6.0 | $ 31.0 | $ 8.0 | 72.0 | 67.0 | 58.0 |
Unfavorable arbitration loss |  |  |  |  |  |  |  |  |  |  | 14.0 | 0.0 | 0.0 |
Merger, acquisition and divestiture expense |  |  |  |  |  |  | 1.0 | 2.0 | 1.0 | 2.0 | 11.0 | 6.0 | 10.0 |
Asset impairment and loss on divestiture |  |  |  |  |  |  | 26.0 |  |  |  | 7.0 | 25.0 | 71.0 |
Asbestos-related adjustments |  |  |  |  |  |  | 23.0 |  |  |  | 0.0 | 23.0 | 0.0 |
Gain on sale of building |  |  |  |  |  |  | (19.0) |  |  |  | 0.0 | (19.0) | 0.0 |
Lease termination settlement |  |  |  |  |  |  |  |  |  |  | 0.0 | 0.0 | 5.0 |
Gain on commercial settlement |  |  |  |  |  |  |  |  |  | (4.0) | 0.0 | (4.0) | 0.0 |
Other income |  |  |  |  |  |  |  |  |  |  | (2.0) | (4.0) |  |
Other (income) expense, net |  |  | $ (138.0) | $ 18.0 | $ 16.0 | $ 29.0 | $ 52.0 | $ 7.0 | $ 30.0 | $ 5.0 | $ (75.0) | $ 94.0 | $ 144.0 |
Proceeds from Divestiture of Businesses |  | $ 28.0 |  |  |  |  |  |  |  |  |  |  |  |
Morse TEC [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity interest acquired by Enstar (percent) | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Romeo Systems Inc. [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership interest (percent) |  |  |  |  |  |  |  |  |  |  |  |  |  | 20.00%

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