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Revenue | 12 Months Ended
--- | ---
Dec. 31, 2023
Revenue from Contract with Customer [Abstract] |
Revenue | Revenue Disaggregated revenue from continuing operations for the fiscal years ended December 31, 2023, 2022, and 2021, are included below and in Note 17, Segment Information.
|  | Years ended December 31, |
|  | 2023 |
| In millions | Gas Cylinders | Elektron | Graphic Arts | Total |
| General industrial | $ | 32.0 |  | $ | 54.9 |  | $ | 31.5 |  | $ | 118.4 |  |
| Transportation | 70.6 |  | 48.7 |  | — |  | 119.3 |  |
| Defense, First Response & Healthcare | 83.8 |  | 83.5 |  | — |  | 167.3 |  |
| Total | $ | 186.4 |  | $ | 187.1 |  | $ | 31.5 |  | $ | 405.0 |  |
|  | 2022 |
|  | Gas Cylinders | Elektron | Graphic Arts | Total |
| General industrial | $ | 34.0 |  | $ | 82.8 |  | $ | 38.7 |  | $ | 155.5 |  |
| Transportation | 77.8 |  | 55.1 |  | — |  | 132.9 |  |
| Defense, First Response & Healthcare | 71.9 |  | 63.1 |  | — |  | 135.0 |  |
| Total | $ | 183.7 |  | $ | 201.0 |  | $ | 38.7 |  | $ | 423.4 |  |
|  | 2021 |
|  | Gas Cylinders | Elektron | Graphic Arts | Total |
| General industrial | $ | 33.4 |  | $ | 55.7 |  | $ | 40.1 |  | $ | 129.2 |  |
| Transportation | 71.2 |  | 45.8 |  | — |  | 117.0 |  |
| Defense, First Response & Healthcare | 73.7 |  | 54.2 |  | — |  | 127.9 |  |
| Total | $ | 178.3 |  | $ | 155.7 |  | $ | 40.1 |  | $ | 374.1 |  |
The Company’s performance obligations are satisfied at a point in time. With the classification of our Superform business as discontinued operations, none of the Company's revenue from continuing operations is satisfied over time. As a result, the Company's contract receivables, contract assets and contract liabilities at December 31, 2023, 2022 and 2021 are included within current assets and liabilities held-for-sale.

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- Definition The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479806/606-10-50-9 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479806/606-10-50-10 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 15 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479806/606-10-50-15 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479806/606-10-50-12 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479806/606-10-50-12 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479806/606-10-50-12 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479806/606-10-50-12 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479806/606-10-50-12 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (b)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479806/606-10-50-13 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Topic 606 -Publisher FASB -URI https://asc.fasb.org//606/tableOfContent + Details
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