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IMPAIRMENT CHARGES - Property, plant and equipment (Details) - Round Mountain $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($)
Impairment charges
Tax expense (recovery) on impairment charge	$ 41.8
Carrying amounts of property, plant and equipment	$ 569.5

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- Definition

The carrying value of property, plant and equipment of the cash generating unit (CGU).

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Represents the information pertaining to tax impact of impairment charge.

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