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Revenue (Tables) | 9 Months Ended
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Sep. 29, 2019
Revenue from Contract with Customer [Abstract] |
Disaggregation of Revenue | Disaggregated sales disclosures for the quarter ended and year-to-date ended September 29, 2019, and September 30, 2018, are included below and in Note 14, Segmental Information.
|  | Third Quarter |
|  | 2019 |  | 2018 |
| In millions | Gas Cylinders | Elektron | Total |  | Gas Cylinders | Elektron | Total |
| General industrial | $ | 10.1 |  | $ | 29.0 |  | $ | 39.1 |  |  | $ | 13.4 |  | $ | 38.3 |  | $ | 51.7 |  |
| Transportation | 20.8 |  | 11.9 |  | 32.7 |  |  | 21.0 |  | 18.1 |  | 39.1 |  |
| Defense and emergency | 17.8 |  | 11.5 |  | 29.3 |  |  | 20.4 |  | 10.3 |  | 30.7 |  |
| Healthcare | 5.5 |  | 0.5 |  | 6.0 |  |  | 7.4 |  | 0.2 |  | 7.6 |  |
|  | $ | 54.2 |  | $ | 52.9 |  | $ | 107.1 |  |  | $ | 62.2 |  | $ | 66.9 |  | $ | 129.1 |  |
|  | Year-to-date |
|  | 2019 |  | 2018 |
| In millions | Gas Cylinders | Elektron | Total |  | Gas Cylinders | Elektron | Total |
| General industrial | $ | 34.2 |  | $ | 88.1 |  | $ | 122.3 |  |  | $ | 40.2 |  | $ | 99.3 |  | $ | 139.5 |  |
| Transportation | 65.8 |  | 48.2 |  | 114.0 |  |  | 57.3 |  | 55.2 |  | 112.5 |  |
| Defense and emergency | 55.2 |  | 34.2 |  | 89.4 |  |  | 62.3 |  | 38.4 |  | 100.7 |  |
| Healthcare | 15.5 |  | 2.8 |  | 18.3 |  |  | 22.1 |  | 2.2 |  | 24.3 |  |
|  | $ | 170.7 |  | $ | 173.3 |  | $ | 344.0 |  |  | $ | 181.9 |  | $ | 195.1 |  | $ | 377.0 |  |
Schedule of Contract Assets and Liabilities | The following table provides information about contract receivables, contract assets and contract liabilities from contracts with customers:
| In millions | September 29, 2019 |  | December 31, 2018 |
| Contract receivables | $ | 1.6 |  |  | $ | 1.5 |  |
| Contract assets | 1.6 |  |  | 2.1 |  |
| Contract liabilities | $ | (0.4 | ) |  | $ | (1.1 | ) |
Significant changes in contract liabilities balances during the period are as follows:
| In millions | 2019 |
| As at January 1, | $ | (1.1 | ) |
| Payments received / amounts billed | (0.6 | ) |
| Costs incurred / revenue recognized | 1.3 |  |
| As at September 29, | $ | (0.4 | ) |

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