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Restructuring Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 27, 2020 | Sep. 29, 2019 | Sep. 27, 2020 | Sep. 29, 2019
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges | $ 4.3 | $ 2.6 | $ 7.9 | $ 24.3
COVID-19 Pandemic |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Employee benefits expense | 1.0 |  |  |
Luxfer Gas Cylinders France |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Employee benefit costs, legal and professional fees | 3.3 |  |  |
Other Restructuring |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Severance and related costs | 4.3 | 2.6 | 7.9 | 19.3
Restructuring charges | 4.3 | 2.6 | 7.9 | 24.3
Gas Cylinders segment | Other Restructuring |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Severance and related costs | $ 3.4 | $ 2.3 | $ 6.8 | $ 18.9

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