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Discontinued Operations - Additional Information (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Sep. 25, 2022 | Sep. 26, 2021 | Sep. 25, 2022 | Sep. 26, 2021 | Dec. 31, 2021 | Mar. 28, 2021
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
(Loss) / gain on disposition of discontinued operations, net of tax | $ 0.0 | $ (0.5) | $ 0.0 | $ 6.6 |  |
Held-for-sale | Building | Elektron |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Amount of property disposed | $ 1.2 |  | $ 1.2 |  | $ 3.7 |
Superform Aluminum Superplastic | Discontinued Operations, Held-for-sale |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Working capital adjustment |  |  |  |  | 0.8 |
(Loss) / gain on disposition of discontinued operations, net of tax |  | (0.1) |  |  | 6.6 |
Superform Aluminum Superplastic | Discontinued Operations, Held-for-sale | U.S. |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Consideration of disposal |  |  |  |  | $ 20.2 | $ 21.0
Graham | Discontinued Operations, Held-for-sale |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
(Loss) / gain on disposition of discontinued operations, net of tax |  | $ (0.5) |  |  |  |

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