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Supplementary balance sheet information | 6 Months Ended
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Jun. 28, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Supplementary balance sheet information | Supplementary balance sheet information
|  |  | June 28, |  | December 31, |
| In millions |  | 2020 |  | 2019 |
| Accounts and other receivables |  |  |  |  |
| Trade receivables |  | $ | 52.6 |  |  | $ | 52.4 |  |
| Related parties |  | 2.0 |  |  | 2.7 |
| Prepayments and accrued income |  | 3.8 |  | 6.7 |
| Derivative financial instruments |  | 0.1 |  | 0.3 |
| Other receivables |  | 4.4 |  | 4.2 |
| Total accounts and other receivables |  | $ | 62.9 |  |  | $ | 66.3 |  |
| Inventories |  |  |  |  |
| Raw materials and supplies |  | $ | 35.1 |  |  | $ | 33.4 |  |
| Work-in-process |  | 30.5 |  |  | 32.2 |  |
| Finished goods |  | 27.6 |  |  | 28.9 |  |
| Total inventories |  | $ | 93.2 |  |  | $ | 94.5 |  |
| Other current assets |  |  |  |  |
| Held-for-sale assets |  | $ | 3.7 |  |  | $ | 3.9 |  |
| Income tax receivable |  | 0.3 |  |  | 1.1 |  |
| Total other current assets |  | $ | 4.0 |  |  | $ | 5.0 |  |
| Property, plant and equipment, net |  |  |  |  |
| Land, buildings and leasehold improvements |  | $ | 68.5 |  |  | $ | 68.1 |  |
| Machinery and equipment |  | 279.1 |  |  | 287.7 |  |
| Construction in progress |  | 7.9 |  |  | 8.9 |  |
| Total property, plant and equipment |  | 355.5 |  |  | 364.7 |  |
| Accumulated depreciation and impairment |  | (262.5) |  |  | (265.8) |  |
| Total property, plant and equipment, net |  | $ | 93.0 |  |  | $ | 98.9 |  |
| Other current liabilities |  |  |  |  |
| Contingent liabilities |  | $ | 6.2 |  |  | $ | 6.6 |  |
| Derivative financial instruments |  | 0.2 |  |  | — |  |
| Operating lease liability |  | 3.1 |  |  | 3.3 |  |
| Other current liabilities |  | 3.1 |  |  | 2.4 |  |
| Total other current liabilities |  | $ | 12.6 |  |  | $ | 12.3 |  |
| Other non-current liabilities |  |  |  |  |
| Contingent liabilities |  | $ | 1.1 |  |  | $ | 0.9 |  |
| Operating lease liability |  | 9.9 |  |  | 11.7 |  |
| Other non-current liabilities |  | 0.1 |  |  | 0.2 |  |
| Total other non-current liabilities |  | $ | 11.1 |  |  | $ | 12.8 |  |
6. Supplementary balance sheet information (continued) Held-for-sale assets and liabilities
| Held-for-sale assets | June 28, |  | December 31, |
| In millions | 2020 |  | 2019 |
| Property, plant and equipment | $ | 3.7 |  |  | $ | 3.7 |  |
| Inventory | — |  |  | 0.2 |  |
| Held-for-sale assets | $ | 3.7 |  |  | $ | 3.9 |  |
During 2018, a building within our Elektron Segment was classified as held-for-sale assets, presented within other current assets. The building was part of a site closure announced in 2017 and was readily available for sale at December 31, 2018. The site at Riverhead, NY is now expected to be sold during 2020 and is included within held-for-sale assets as at June 28, 2020 and December 31, 2019.

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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -URI http://asc.fasb.org/topic&trid=2122208 + Details
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