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The amount of assets that are: (a) cash; (b) an equity instrument of another entity; (c) a contractual right: (i) to receive cash or another financial asset from another entity; or (ii) to exchange financial assets or financial liabilities with another entity under conditions that are potentially favourable to the entity; or (d) a contract that will, or may be, settled in the entity’s own equity instruments and is: (i) a non-derivative for which the entity is, or may be, obliged to receive a variable number of the entity’s own equity instruments; or (ii) a derivative that will, or may be, settled other than by the exchange of a fixed amount of cash or another financial asset for a fixed number of the entity’s own equity instruments. For this purpose the entity’s own equity instruments do not include puttable financial instruments classified as equity instruments in accordance with paragraphs 16A-16B of IAS 32, instruments that impose on the entity an obligation to deliver to another party a pro rata share of the net assets of the entity only on liquidation and are classified as equity instruments in accordance with paragraphs 16C-16D of IAS 32, or instruments that are contracts for the future receipt or delivery of the entity’s own equity instruments. [Refer: Financial instruments, class [member]; Financial liabilities]

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The gains (losses) excluding exchange differences, recognised in other comprehensive income, on the fair value measurement of assets. [Refer: At fair value [member]; Other comprehensive income]

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The increase in the fair value measurement of assets resulting from purchases of those assets. [Refer: At fair value [member]]

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FAIR VALUE MEASUREMENT - Foreign currency forward and collar contracts (Details) $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($) $ / $ $ / $ R$ / $	Dec. 31, 2021 USD ($)
Derivative Contracts
Financial Instruments
Unrealized gain (loss) recorded in AOCI	$ 17.5	$ 26.9
Foreign currency forward and collar contracts
Financial Instruments
Unrealized gain (loss) recorded in AOCI	1.3	(3.5)
Brazilian real zero cost collar contracts
Financial Instruments
Unrealized gain (loss) recorded in AOCI	1.7	(3.8)
Brazilian real zero cost collar contracts \| Not Later Than One Year [Member]
Financial Instruments
Foreign currency net working capital	98.4
Brazilian real zero cost collar contracts \| 2025
Financial Instruments
Foreign currency net working capital	27.6
Brazilian real zero cost collar contracts \| From 2022 to 2024
Financial Instruments
New derivative contracts	30.0
Canadian dollar forward buy contracts
Financial Instruments
Unrealized gain (loss) recorded in AOCI	(0.6)	1.3
Canadian dollar forward buy contracts \| Not Later Than One Year [Member]
Financial Instruments
Foreign currency net working capital	$ 41.4
Average price \| $ / $	1.33
Canadian dollar forward buy contracts \| From 2022 to 2023
Financial Instruments
Average price \| $ / $	1.35
New derivative contracts	$ 26.4
Chilean peso zero cost collar contracts
Financial Instruments
Unrealized gain (loss) recorded in AOCI	0.2	$ (1.4)
Chilean peso zero cost collar contracts \| Not Later Than One Year [Member]
Financial Instruments
Foreign currency net working capital	$ 42.0
Put \| Brazilian real zero cost collar contracts \| Not Later Than One Year [Member]
Financial Instruments
Average price \| R$ / $	5.15
Put \| Brazilian real zero cost collar contracts \| 2025
Financial Instruments
Average price \| R$ / $	5.55
Put \| Brazilian real zero cost collar contracts \| From 2022 to 2024
Financial Instruments
Average price \| R$ / $	5.20
Put \| Chilean peso zero cost collar contracts \| Not Later Than One Year [Member]
Financial Instruments
Average price \| $ / $	810
Call \| Brazilian real zero cost collar contracts \| Not Later Than One Year [Member]
Financial Instruments
Average price \| R$ / $	7.06
Call \| Brazilian real zero cost collar contracts \| 2025
Financial Instruments
Average price \| R$ / $	9.01
Call \| Brazilian real zero cost collar contracts \| From 2022 to 2024
Financial Instruments
Average price \| R$ / $	6.40
Call \| Chilean peso zero cost collar contracts \| Not Later Than One Year [Member]
Financial Instruments
Average price \| $ / $	1,040