COMMITMENTS - Contractual Obligation (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Commitments [Abstract]
Purchase obligations	$ 99.6	$ 120.3
Capital expenditure obligations	426.2	400.6
Lease obligations	80.3	72.4
Contractual Obligation	$ 606.1	$ 593.3

The amount of contractual undiscounted cash flows in relation to lease liabilities before deducting finance charges. [Refer: Lease liabilities]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
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-IssueDate 2021-01-01
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-URIDate 2021-03-24

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Name IFRS
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-IssueDate 2021-01-01
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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant