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Restructuring - Schedule of restructuring related costs (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 29, 2024 | Oct. 01, 2023 | Sep. 29, 2024 | Oct. 01, 2023
Restructuring Cost and Reserve [Line Items] |  |  |  |
Severance and other costs | $ 0.5 | $ 1.2 | $ 2.3 | $ 1.7
Asset impairments | 0.0 | 0.4 | 0.0 | 2.7
Total restructuring charges | 0.5 | 1.6 | 2.3 | 4.4
Gas Cylinders |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Severance and other costs | 0.5 | 1.1 | 2.1 | 1.6
Asset impairments | 0.0 | 0.3 | 0.0 | 2.6
Elektron |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Severance and other costs | 0.0 | 0.1 | 0.2 | 0.1
Elektron | Other restructuring |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Asset impairments | $ 0.0 | $ 0.1 | $ 0.0 | $ 0.1

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