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Supplementary balance sheet information
 12 Months Ended
Dec. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Supplementary balance sheet information Supplementary balance sheet information
In millions20212020
Accounts and other receivables
Trade receivables, net$45.8 $33.6 
Related parties0.1 0.2
Prepayments and accrued income8.55.5
Derivative financial instruments0.10.2
Deferred consideration1.00.2
Other receivables2.33.4
Total accounts and other receivables$57.8 $43.1 
Inventories
Raw materials and supplies$39.3 $26.2 
Work-in-process26.7 19.7 
Finished goods24.5 22.9 
Total inventories$90.5 $68.8 
Other current assets
Income tax receivable— 1.5 
Total other current assets$— $1.5 
Property, plant and equipment, net
Land, buildings and leasehold improvements$64.6 $65.2 
Machinery and equipment266.3 255.3 
Construction in progress8.4 7.8 
Total property plant and equipment339.3 328.3 
Accumulated depreciation and impairment(251.8)(242.3)
Total property, plant and equipment, net$87.5 $86.0 
Other current liabilities
Short term provision$0.2 $1.1 
Restructuring provision11.7 9.0 
Derivative financial instruments0.1 0.4 
Operating lease liability3.0 2.9 
Advance payments4.6 0.1 
Total other current liabilities$19.6 $13.5 
Other non-current liabilities
Contingent liabilities$1.8 $1.0 
Operating lease liability9.8 6.7 
Total other non-current liabilities$11.6 $7.7 
Impairment of property, plant and equipment
There were no impairments of property, plant and equipment recognized in 2021 or 2020 in continuing operations. See note 7 for the impairment recognized in discontinued operations.