OTHER (INCOME) EXPENSES (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023
Analysis of income and expense [abstract]
Changes in asset retirement obligations at closed mines	$ (13.4)	$ 9.7
Write-down of assets	0.9	1.3
Forfeiture of carbon fines	0.0	13.5
Settlement of carbon fines	0.0	15.0
Other	3.3	7.8
Other expenses	$ (9.2)	$ 47.3

The losses on disposals of non-current assets. [Refer: Non-current assets]

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 112
-Subparagraph c
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_112_c&doctype=Standard
-URIDate 2024-03-27

Name:	ifrs-full_LossesOnDisposalsOfNoncurrentAssets
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration