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Restructuring - Charges (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Oct. 01, 2023 | Sep. 25, 2022 | Oct. 01, 2023 | Sep. 25, 2022
Restructuring Cost and Reserve [Line Items] |  |  |  |
Severance and other costs | $ 1.2 | $ 0.3 | $ 1.7 | $ 2.0
Asset impairments | 0.4 | 0.0 | 2.7 | 0.0
Total restructuring charges | 1.6 | 0.3 | 4.4 | 2.0
Gas Cylinders |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Severance and other costs | 1.1 | 0.3 | 1.6 | 1.8
Asset impairments | 0.3 | 0.0 | 2.6 | 0.0
Elektron |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Severance and other costs | 0.1 | 0.0 | 0.1 | 0.2
Elektron | Other restructuring |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Asset impairments | $ 0.1 | $ 0.0 | $ 0.1 | $ 0.0

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