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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, 2023 USD ($) $ / $ R$ / $ $ / $	Dec. 31, 2022 USD ($)
Derivative Contracts
FAIR VALUE MEASUREMENT
Unrealized gain (loss) recorded in AOCI	$ 5.1	$ 17.5
Foreign currency forward and collar contracts
FAIR VALUE MEASUREMENT
Unrealized gain (loss) recorded in AOCI	4.4	1.3
Brazilian real zero cost collar contracts
FAIR VALUE MEASUREMENT
Unrealized gain (loss) recorded in AOCI	3.3	(1.7)
Brazilian real zero cost collar contracts \| 2024
FAIR VALUE MEASUREMENT
Foreign currency net working capital	108.0
Brazilian real zero cost collar contracts \| From 2023 to 2024
FAIR VALUE MEASUREMENT
New derivative contracts	110.4
Canadian dollar forward buy contracts
FAIR VALUE MEASUREMENT
Unrealized gain (loss) recorded in AOCI	(1.5)	0.6
Canadian dollar forward buy contracts \| 2024
FAIR VALUE MEASUREMENT
Foreign currency net working capital	$ 96.6
Average price \| $ / $	1.35
Canadian dollar forward buy contracts \| From 2023 to 2024
FAIR VALUE MEASUREMENT
Average price \| $ / $	1.35
New derivative contracts	$ 145.6
Chilean peso zero cost collar contracts
FAIR VALUE MEASUREMENT
Unrealized gain (loss) recorded in AOCI	0.4	$ (0.2)
Chilean peso zero cost collar contracts \| 2024
FAIR VALUE MEASUREMENT
Foreign currency net working capital	75.6
Chilean peso zero cost collar contracts \| 2025
FAIR VALUE MEASUREMENT
Foreign currency net working capital	36.0
Chilean peso zero cost collar contracts \| From 2023 to 2025
FAIR VALUE MEASUREMENT
New derivative contracts	$ 133.7
Put \| Brazilian real zero cost collar contracts \| 2024
FAIR VALUE MEASUREMENT
Average price \| R$ / $	5.05
Put \| Brazilian real zero cost collar contracts \| From 2023 to 2024
FAIR VALUE MEASUREMENT
Average price \| R$ / $	4.91
Put \| Chilean peso zero cost collar contracts \| 2024
FAIR VALUE MEASUREMENT
Average price \| $ / $	824
Put \| Chilean peso zero cost collar contracts \| 2025
FAIR VALUE MEASUREMENT
Average price \| $ / $	840
Put \| Chilean peso zero cost collar contracts \| From 2023 to 2025
FAIR VALUE MEASUREMENT
Average price \| $ / $	825
Call \| Brazilian real zero cost collar contracts \| 2024
FAIR VALUE MEASUREMENT
Average price \| R$ / $	6.56
Call \| Brazilian real zero cost collar contracts \| From 2023 to 2024
FAIR VALUE MEASUREMENT
Average price \| R$ / $	5.79
Call \| Chilean peso zero cost collar contracts \| 2024
FAIR VALUE MEASUREMENT
Average price \| $ / $	956
Call \| Chilean peso zero cost collar contracts \| 2025
FAIR VALUE MEASUREMENT
Average price \| $ / $	1,044
Call \| Chilean peso zero cost collar contracts \| From 2023 to 2025
FAIR VALUE MEASUREMENT
Average price \| $ / $	971