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Supplementary balance sheet information | 12 Months Ended
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Dec. 31, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Supplementary balance sheet information | Supplementary balance sheet information
| In millions |  | 2022 |  | 2021 |
| Accounts and other receivables |  |  |  |  |
| Trade receivables, net |  | $ | 56.4 |  |  | $ | 45.8 |  |
| Related parties |  | 0.1 |  |  | 0.1 |
| Prepayments and accrued income |  | 6.6 |  | 8.5 |
| Derivative financial instruments |  | 0.7 |  | 0.1 |
| Deferred consideration |  | — |  | 1.0 |
| Other receivables |  | 4.0 |  | 2.3 |
| Total accounts and other receivables |  | $ | 67.8 |  |  | $ | 57.8 |  |
| Inventories |  |  |  |  |
| Raw materials and supplies |  | $ | 42.7 |  |  | $ | 39.3 |  |
| Work-in-process |  | 44.0 |  |  | 26.7 |  |
| Finished goods |  | 24.4 |  |  | 24.5 |  |
| Total inventories |  | $ | 111.1 |  |  | $ | 90.5 |  |
| Property, plant and equipment, net |  |  |  |  |
| Land, buildings and leasehold improvements |  | $ | 58.9 |  |  | $ | 64.6 |  |
| Machinery and equipment |  | 254.9 |  |  | 266.3 |  |
| Construction in progress |  | 9.8 |  |  | 8.4 |  |
| Total property plant and equipment |  | 323.6 |  |  | 339.3 |  |
| Accumulated depreciation and impairment |  | (245.9) |  |  | (251.8) |  |
| Total property, plant and equipment, net |  | $ | 77.7 |  |  | $ | 87.5 |  |
| Other current liabilities |  |  |  |  |
| Short term provision |  | $ | 0.1 |  |  | $ | 0.2 |  |
| Restructuring provision |  | 3.7 |  |  | 11.7 |  |
| Derivative financial instruments |  | 0.4 |  |  | 0.1 |  |
| Operating lease liability |  | 4.7 |  |  | 3.0 |  |
| Advance payments |  | 2.3 |  |  | 4.6 |  |
| Total other current liabilities |  | $ | 11.2 |  |  | $ | 19.6 |  |
| Other non-current liabilities |  |  |  |  |
| Contingent liabilities |  | $ | 0.7 |  |  | $ | 1.8 |  |
| Operating lease liability |  | 18.2 |  |  | 9.8 |  |
| Other non-current liabilities |  | 0.1 |  |  | — |  |
| Total other non-current liabilities |  | $ | 19.0 |  |  | $ | 11.6 |  |
Impairment of property, plant and equipment There were no impairments of property, plant and equipment recognized in 2022, 2021 or 2020 in continuing operations.

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- Definition The entire disclosure for supplemental balance sheet disclosures, including descriptions and amounts for assets, liabilities, and equity. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -URI https://asc.fasb.org/topic&trid=2122208 + Details
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