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Reclamation and Closure Cost Provisions - Additional Information (Details) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022
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Schedule Of Detailed Information About Reclamation Obligation [Line Items] |  |
Undiscounted value of the provision | $ 214.9 | $ 186.6
Security for reclamation | $ 54.6 | $ 41.8
Bottom of range |  |
Schedule Of Detailed Information About Reclamation Obligation [Line Items] |  |
Future cash flows using inflation rates | 2.00% | 2.00%
Future cash flow discount rate | 3.00% | 2.90%
Top of range |  |
Schedule Of Detailed Information About Reclamation Obligation [Line Items] |  |
Future cash flows using inflation rates | 3.50% | 5.50%
Future cash flow discount rate | 9.00% | 11.70%

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- Definition Collateral For Reclamation Amount. + References No definition available. + Details
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- Definition Reclamation obligation undiscounted value. + References No definition available. + Details
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