Judgements and estimation uncertainty	12 Months Ended
Judgements and estimation uncertainty	Dec. 31, 2023
Judgements and Estimation Uncertainty [Abstract]
Judgements and estimation uncertainty	4. Judgements and estimation uncertainty The preparation of consolidated financial statements in conformity with IFRS requires management to make judgements, estimates and assumptions that affect the application of accounting policies and the reported amounts of assets, liabilities, income and expenses. Actual results may differ from these estimates. Estimates and underlying assumptions are reviewed at each period end. Revisions to accounting estimates are recognized in the period in which the estimates are revised and in any future periods affected. Significant areas requiring the use of management assumptions, estimates and judgements include the valuation of property, plant and equipment and goodwill, estimated recoverable mineral reserves and mineral resources, inventory, asset retirement obligations and current and deferred taxes. Actual results could differ from these estimates. Outlined below are some of the areas which require management to make significant judgements, estimates and assumptions. (i) Valuation of property, plant and equipment and goodwill Property, plant and equipment and goodwill are tested for impairment when events or changes in circumstances indicate that the carrying amount may not be fully recoverable. Goodwill is tested at least annually. Calculating the recoverable amount, including estimated FVLCD of CGUs for property, plant and equipment and goodwill, requires management to make estimates and assumptions with respect to discount rates, future production levels including amount of recoverable reserves, resources and exploration potential, operating and capital costs, long-term metal prices, and estimates of the fair value of mineral properties beyond proven and probable reserves. Changes in any of the assumptions or estimates used in determining the recoverable amount could result in additional impairment or reversal of impairment recognized. Judgment is applied in assessing whether certain facts and circumstances are indicators of impairment, and accordingly, require an impairment test to be performed. The Company considers both external and internal sources of information in assessing whether there are any indications that its assets or CGUs may be impaired. The primary external factors considered are changes in estimated long-term metal prices, changes in laws and regulations and the Company’s market capitalization relative to its net asset carrying amount. The primary internal factors considered are the performance of its CGUs against expectations, changes in mineral reserves and resources, life of mine plans and exploration results. 4. Judgements and estimation uncertainty (continued) (i) Valuation of property, plant and equipment and goodwill (continued) Mineral reserve and mineral resource estimates are based on various assumptions relating to operating matters, including, with respect to production costs, mining and processing recoveries, cut-off grades, as well as assumptions relating to long-term commodity prices and exchange rates and capital costs. Cost estimates are based primarily on feasibility study estimates or operating history. Estimates are prepared under supervision of appropriately qualified persons, but will be impacted by forecasted commodity prices, exchange rates, capital and production costs and recoveries amongst other factors. Estimated recoverable mineral reserves and mineral resources are used to determine the depreciation of property, plant and equipment at operating mine sites, in accounting for deferred stripping costs, in performing impairment testing and for forecasting the timing of the payment of decommissioning and restoration costs. Therefore, changes in the assumptions used could impact the carrying value of assets, depreciation and impairment charges recorded in the consolidated statements of operations and the carrying value of the asset retirement obligation. (ii) Inventory Inventories are measured at the lower of weighted average cost and net realizable value. The determination of net realizable value involves the use of estimates. The net realizable value of inventories is calculated as the estimated price at the time of eventual sale based on prevailing and forecast metal prices less estimated future costs to convert the inventories into saleable form and associated selling costs. The net realizable value of inventories is assessed at the end of each reporting period. Changes in the estimates of net realizable value may result in a write-down of inventories or a reversal of a previous write-down. In determining the valuation of heap leach ore inventories, the Company makes estimates of recoverable ounces on the leach pads based on quantities of ore placed on the leach pads, the grade of ore placed on the leach pads and an estimated recovery rate. Actual timing and ultimate recovery of gold contained on the leach pads can differ significantly from these estimates. Changes in estimates of recoverable ounces on the leach pads can impact the Company’s ability to recover the carrying amount of the inventories and may result in a write-down of inventories. (iii) Asset retirement obligation The asset retirement obligation provision represents management's best estimate of the present value of future cash outflows required to settle the liability which reflect estimates of future costs, inflation, requirements of the relevant legal and regulatory frameworks and the timing of restoration and rehabilitation activities. Estimated future cash outflows are discounted using a risk-free rate based on U.S. Treasury bond rates. Changes to asset retirement obligation estimates are recorded with a corresponding change to the related item of property, plant and equipment, or to the statements of operations if there is no related property, plant and equipment. Adjustments to the carrying amounts of related items of property, plant and equipment can result in a change to future depreciation expense. (iv) Current and deferred taxes Judgements and estimates of recoverability are required in assessing whether deferred tax assets recognized on the consolidated statements of financial position are recoverable which is based on an assessment of the ability to use the underlying future tax deductions before they expire against future taxable income. Deferred tax liabilities arising from temporary differences on investments in subsidiaries, joint ventures and associates are recognized unless the reversal of the temporary differences is not expected to occur in the foreseeable future and can be controlled, which requires judgement. Assumptions about the generation of future taxable earnings and repatriation of retained earnings depend on management’s estimates of future production and sales volumes, commodity prices, reserves, operating costs, decommissioning and restoration costs, capital expenditures, dividends and other capital management transactions. 4. Judgements and estimation uncertainty (continued) (iv) Current and deferred taxes (continued) The Company operates in multiple tax jurisdictions and judgement is required in the application of income tax legislation in these jurisdictions. These estimates and judgements are subject to risk and uncertainty and could result in an adjustment to current and deferred tax provisions and a corresponding increase or decrease to earnings or loss for the period.