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Restructuring - Restructuring Charges (Details) - USD ($) $ in Millions | 3 Months Ended
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Mar. 28, 2021 | Mar. 29, 2020
Restructuring Cost and Reserve [Line Items] |  |
Total restructuring charges | $ 1.4 | $ 2.8
Gas Cylinders segment |  |
Restructuring Cost and Reserve [Line Items] |  |
Total restructuring charges | 0.5 | 2.6
Elektron segment |  |
Restructuring Cost and Reserve [Line Items] |  |
Total restructuring charges | 0.9 | 0.0
Other |  |
Restructuring Cost and Reserve [Line Items] |  |
Total restructuring charges | $ 0.0 | $ 0.2

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- Definition Amount of restructuring charges, remediation cost, and asset impairment loss. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.3) -URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227 + Details
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