Financial risk management - Credit risk (Details) - CREDIT RISK EXPOSURE - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
CREDIT RISK EXPOSURE
Maximum exposure to credit risk	$ 214.9	$ 507.9
Cash and cash equivalents
CREDIT RISK EXPOSURE
Maximum exposure to credit risk	200.8	481.5
Trade and other receivables
CREDIT RISK EXPOSURE
Maximum exposure to credit risk	$ 14.1	$ 26.4

The amount that best represents the maximum exposure to credit risk without taking into account any collateral held or other credit enhancements (for example, netting agreements that do not qualify for offset in accordance with IAS 32). [Refer: Credit risk [member]]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2022-03-24
-Paragraph 35K
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2022-en-r&anchor=para_35K_a&doctype=Standard
-URIDate 2022-03-24

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Note Expiry date 2023-01-01
-Name IFRS
-Number 7
-IssueDate 2022-03-24
-Paragraph 36
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2017-en-b&anchor=para_36_a&doctype=Standard&book=b
-URIDate 2022-03-24

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