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Restructuring - Restructuring Charges (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 29, 2019 | Sep. 30, 2018 | Sep. 29, 2019 | Sep. 30, 2018
Restructuring Cost and Reserve [Line Items] |  |  |  |
Total restructuring charges | $ 2.6 | $ 1.1 | $ 24.3 | $ 2.1
Severance and related costs |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Total restructuring charges | 2.6 | 0.4 | 19.3 | 2.1
Severance and related costs | Gas Cylinders |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Total restructuring charges | 2.3 | 0.0 | 18.9 | 0.1
Severance and related costs | Elektron |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Total restructuring charges | 0.3 | 0.4 | 0.4 | 2.0
Asset impairments |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Total restructuring charges | 0.0 | 0.7 | 5.0 | 0.0
Asset impairments | Gas Cylinders |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Total restructuring charges | 0.0 | 0.0 | 0.6 | 0.0
Asset impairments | Elektron |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Total restructuring charges | $ 0.0 | $ 0.7 | $ 4.4 | $ 0.0

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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=115205541&loc=SL114868664-224227 + Details
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