Hudbay Minerals (HBM) 40-F 28 Mar 22 2021 FY Annual report (Canada) Financial data

Document and Entity Information

Document and Entity Information	12 Months Ended
	Dec. 31, 2021
Entity Addresses [Line Items]
Entity Registrant Name	HUDBAY MINERALS INC.
Entity Central Index Key	0001322422
Entity Current Reporting Status	Yes
Document Type	40-F
Document Period End Date	Dec. 31, 2021
Current Fiscal Year End Date	--12-31
Entity Interactive Data Current	Yes
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity File Number	001-34244
Entity Emerging Growth Company	false
Entity Incorporation, State or Country Code	Z4
Entity Address, Address Line One	25 York Street
Entity Address, Address Line Two	Suite 800
Entity Address, City or Town	Toronto
Entity Address, Postal Zip Code	M5J 2V5
City Area Code	416
Local Phone Number	362-8181
Annual Information Form	true
Audited Annual Financial Statements	true
Document Annual Report	true
Document Registration Statement	false
Entity Address, State or Province	ON
Auditor Firm ID	1208
Auditor Location	Toronto, Canada
Auditor Name	Deloitte LLP
Business Contact [Member]
Entity Addresses [Line Items]
Entity Address, Address Line One	2711 Centerville Road
Entity Address, Address Line Two	Suite 400
Entity Address, City or Town	Wilmington
Entity Address, Postal Zip Code	19808
City Area Code	302
Local Phone Number	636-5401
Entity Address, State or Province	DE
Contact Personnel Name	Corporation Service Company

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Current assets
Cash	$ 270,989	$ 439,135
Trade and other receivables	204,081	141,199
Inventories	158,453	143,105
Prepaid expenses and other current assets	15,338	16,717
Other financial assets	7,867	3,073
Taxes receivable	0	12,446
Total Current assets	656,728	755,675
Receivables	16,084	18,568
Inventories	37,573	22,006
Other financial assets	11,158	15,669
Intangibles and other assets	20,138	21,173
Property, plant and equipment	3,740,966	3,731,655
Deferred tax assets	133,584	101,899
Total Assets	4,616,231	4,666,645
Current liabilities
Trade and other payables	207,777	233,147
Taxes payable	15,243	2,701
Other liabilities	63,002	51,971
Other financial liabilities	100,702	24,713
Lease liabilities	33,529	33,473
Deferred revenue	88,963	102,782
Total Current liabilities	509,216	448,787
Other financial liabilities	120,972	194,378
Lease liabilities	44,473	30,041
Long-term debt	1,180,274	1,135,675
Deferred revenue	426,363	443,902
Pension obligations	6,252	23,316
Other employee benefits	128,588	129,508
Environmental and other provisions	461,501	331,799
Deferred tax liabilities	261,764	229,433
Total liabilities	3,139,403	2,966,839
Equity
Share capital	1,778,848	1,777,340
Reserves	(182)	(24,200)
Retained earnings	(301,838)	(53,334)
Total equity	1,476,828	1,699,806
Total liabilities and equity	$ 4,616,231	$ 4,666,645

Consolidated Income Statements

Consolidated Income Statements - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Income Statement
Revenue	$ 1,501,998	$ 1,092,418
Cost of sales
Mine operating costs	819,582	691,591
Depreciation and amortization	357,924	361,827
Impairment - environmental obligation	193,473	0
Cost of Sales	1,370,979	1,053,418
Gross profit	131,019	39,000
Selling and administrative expenses	43,011	41,408
Exploration and evaluation expenses	39,961	17,196
Other expenses	29,779	17,583
Results from operating activities	18,268	(37,187)
Net interest expense on long term debt	74,748	82,712
Accretion on streaming arrangements	42,654	56,670
Change in fair value of financial instruments	54,514	(29,370)
Other net finance costs	49,103	31,890
Net finance expense	221,019	141,902
Loss before tax	(202,751)	(179,089)
Tax expense (recovery)	41,607	(34,505)
Loss for the year	$ (244,358)	$ (144,584)
Loss per share
Basic and diluted (in dollars per share)	$ (0.93)	$ (0.55)
Weighted average number of common shares outstanding:
Basic and diluted (in shares)	261,462,323	261,272,151

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Cash generated from operating activities:
Loss for the year	$ (244,358)	$ (144,584)
Tax expense (recovery)	41,607	(34,505)
Items not affecting cash:
Depreciation and amortization	359,767	363,603
Share-based compensation	12,145	15,008
Net interest expense on long term debt	74,748	82,712
Accretion on streaming arrangements	42,654	56,670
Change in fair value of financial instruments	54,514	(29,370)
Other net finance costs	49,103	31,890
Inventory adjustments	3,999	2,302
Amortization of deferred revenue and variable consideration	(73,136)	(73,931)
Pension and other employee benefit payments, net of accruals	7,975	3,043
Impairment - environmental obligation	193,473	0
Decommissioning and restoration payments	(21,663)	(18,737)
Other	3,166	403
Taxes paid	(20,132)	(12,641)
Operating cash flow before precious metals stream deposit and changes in non-cash working capital	483,862	241,863
Precious metals stream deposit	4,000	0
Change in non-cash working capital	(104,046)	(2,383)
Net cash flows from operating activities	383,816	239,480
Cash used in investing activities:
Acquisition of property, plant and equipment	(377,433)	(361,185)
Proceeds from disposal of investments	1,193	0
Change in restricted cash	(100)	0
Interest received	1,338	2,167
Net cash flows from investing activities	(375,002)	(359,018)
Cash (used in)/generated from financing activities:
Issuance of senior unsecured notes, net of transaction costs	591,922	591,824
Principal repayments	(600,000)	(400,000)
Premium paid on redemption of notes	(22,878)	(7,252)
Interest paid on long-term debt	(84,435)	(81,517)
Financing costs	(19,623)	(16,204)
Lease payments	(37,719)	(35,980)
Gold prepayment proceeds	0	115,005
Net proceeds from exercise of stock options	980	0
Dividends paid	(4,146)	(3,783)
Net cash flows from financing activities	(175,899)	162,093
Effect of movement in exchange rates on cash	(1,061)	434
Net (decrease) increase in cash	(168,146)	42,989
Cash, beginning of the year	439,135	396,146
Cash, end of the year	$ 270,989	$ 439,135

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Statement of Income and Comprehensive Income
Loss for the year	$ (244,358)	$ (144,584)
Item that will be reclassified subsequently to profit or loss:
Net gain on translation of foreign currency balances	1,336	4,170
Total other comprehensive income that will be reclassified to profit or loss, net of tax	1,336	4,170
Items that will not be reclassified subsequently to profit or loss:
Gold prepayment revaluation	(2,684)	(1,885)
Tax effect	721	506
Remeasurement - actuarial loss	29,449	(2,598)
Tax effect	(6,195)	(1,265)
Total other comprehensive income that will not be reclassified to profit or loss, net of tax	21,291	(5,242)
Transferred to income statement:
Other comprehensive income (loss) net of tax, for the year	22,627	(1,072)
Total comprehensive loss for the year	$ (221,731)	$ (145,656)

Consolidated Statements of Chan

Consolidated Statements of Changes in Equity - USD ($) $ in Thousands	Share capital [Member]	Other capital reserves [Member]	Foreign currency translation reserve [Member]	Remeasurement reserve [Member]	Retained earnings [Member]	Total
Beginning Balance at Dec. 31, 2019	$ 1,777,340	$ 54,815	$ (2,599)	$ (76,466)	$ 95,033	$ 1,848,123
Statements [Line Items]
Profit (Loss)					(144,584)	(144,584)
Other comprehensive income (loss)			4,170	(5,242)		(1,072)
Total comprehensive income (loss)			4,170	(5,242)	(144,584)	(145,656)
Contributions by and distributions to owners:
Dividends					(3,783)	(3,783)
Stock options		1,122				1,122
Total contributions by and distributions to owners		1,122			(3,783)	(2,661)
Ending Balance at Dec. 31, 2020	1,777,340	55,937	1,571	(81,708)	(53,334)	1,699,806
Statements [Line Items]
Profit (Loss)					(244,358)	(244,358)
Other comprehensive income (loss)			1,336	21,291		22,627
Total comprehensive income (loss)			1,336	21,291	(244,358)	(221,731)
Contributions by and distributions to owners:
Dividends					(4,146)	(4,146)
Stock options		1,919				1,919
Transfer to share capital related to stock options redeemed	528	(528)
Issuance of shares related to stock options redeemed	980					980
Total contributions by and distributions to owners	1,508	1,391			(4,146)	(1,247)
Ending Balance at Dec. 31, 2021	$ 1,778,848	$ 57,328	$ 2,907	$ (60,417)	$ (301,838)	$ 1,476,828

Reporting entity

Reporting entity	12 Months Ended
	Dec. 31, 2021
Disclosure Of Corporate Information [Abstract]
Reporting entity [Text Block]	1. Reporting entity On January 1, 2017, Hudbay Minerals Inc. amalgamated under the Canada Business Corporations Act Wholly owned subsidiaries as at December 31, 2021 and 2020 include HudBay Marketing & Sales Inc. ("HMS"), HudBay Peru Inc., HudBay Peru S.A.C. ("Hudbay Peru"), HudBay (BVI) Inc., Hudbay Arizona Inc, Rosemont Copper Company ("Rosemont") and Mason Resources (US) Inc. ("Mason"). Hudbay is an integrated mining company primarily producing copper concentrate (containing copper, gold and silver), silver/gold doré, molybdenum concentrate and zinc metal. With assets in North and South America, Hudbay is focused on the discovery, production and marketing of base and precious metals. Directly and through its subsidiaries, Hudbay owns three polymetallic mines, four ore concentrators and a zinc production facility in northern Manitoba and Saskatchewan (Canada) and Cusco (Peru) and copper projects in Arizona and Nevada (United States). Hudbay also has equity investments in a number of junior exploration companies. The Company is governed by the Canada Business Corporations Act and its shares are listed under the symbol "HBM" on the Toronto Stock Exchange, New York Stock Exchange and Bolsa de Valores de Lima.

Basis of preparation

Basis of preparation	12 Months Ended
	Dec. 31, 2021
Basis Of Preparation [Abstract]
Basis of preparation [Text Block]	2. Basis of preparation (a) Statement of compliance: These consolidated financial statements have been prepared in accordance with International Financial Reporting Standards ("IFRS") as issued by the International Accounting Standards Board ("IASB") effective for the year ended December 31, 2021. The Board of Directors approved these consolidated financial statements on February 23, 2022. (b) Functional and presentation currency: Hudbay's consolidated financial statements are presented in US dollars, which is the Company's and all material subsidiaries' functional currency, except the Company's Manitoba business unit, which has a functional currency of Canadian dollars. All values are rounded to the nearest thousand ($000) except where otherwise indicated. (c) The consolidated financial statements have been prepared on the historical cost basis except for the following items in the consolidated balance sheets: - - - (d) Use of judgements and estimates: The preparation of the consolidated financial statements in conformity with IFRS requires Hudbay to make judgements, estimates and assumptions that affect the application of accounting policies, reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements, and reported amounts of revenue and expenses during the reporting period. Actual results may differ from these estimates. Hudbay reviews these estimates and underlying assumptions on an ongoing basis, based on experience and other factors, including expectations of future events that the Company believes to be reasonable under the circumstances. Revisions to accounting estimates are recognized prospectively in the period in which the estimates are revised and in any future periods affected. The following are critical and significant judgements and estimates impacting the consolidated financial statements: - Indicators and testing of impairment (reversal of impairment) of non-financial assets (notes 3i, 3j and 11) - - IFRS 15 - Revenue- stream transactions (note 17) - - Mineral reserves and resources (notes 3i, 3m and 3o) - Changes in the mineral reserve or resource estimates may affect: - the carrying value of exploration and evaluation assets, capital works in progress, mining properties and plant and equipment; - depreciation expense for assets depreciated either on a unit-of-production basis or on a straight line basis where useful lives are restricted by the life of the related mine plan; - the provision for decommissioning, restoration and similar liabilities; - t he carrying value of deferred tax assets; and, - amortization of deferred revenue. - Property plant and equipment (notes 3i and 11) - - Tax provisions (notes 3o and 21 - Assaying utilized to determine revenue and recoverability of inventories (notes 3c and 3f) - - Decommissioning and restoration obligations (notes 3m and 18) - - Pension and other employee benefit (notes 3l, 19 and 20) - s (e) COVID-19 estimation uncertainty: The In making this judgment, the Company has assessed various criteria including, but not limited to, existing laws, regulations, orders, disruptions and potential disruptions in our supply chain, disruptions in the markets for our products, commodity prices and foreign exchange prices and the actions that the Company has taken at its operations to protect the health and safety of its workforce and local community.

Significant accounting policies

Significant accounting policies	12 Months Ended
	Dec. 31, 2021
Significant Accounting Policies [Abstract]
Significant accounting policies [Text Block]	3. Significant accounting policies The accounting policies set out below have been applied consistently to all periods presented in these consolidated financial statements and by all Hudbay's entities. (a) Basis of consolidation: Intercompany balances and transactions are eliminated upon consolidation. When a Hudbay entity transacts with an associate or jointly controlled entity of the Company, unrealized profits and losses are eliminated to the extent of Hudbay's interest in the relevant associate or joint venture. The accounting policies of Hudbay's entities are changed when necessary to align them with the policies adopted by the Company. Subsidiaries A subsidiary is an entity controlled by Hudbay. The financial statements of subsidiaries are included in the consolidated financial statements from the date that control commences until the date that control ceases. Business combinations and goodwill Should Hudbay make an acquisition, it first determines whether the assets acquired and liabilities assumed constitute a business, in which case the acquisition requires accounting as a business combination. Management applies judgement in determining whether the acquiree is capable of being conducted and managed for the purpose of providing a return, considering the inputs of the acquiree and processes applied to those inputs that have the ability to create outputs. Hudbay applies the acquisition method of accounting to business combinations, whereby the goodwill is measured at the acquisition date as the fair value of the consideration transferred including the recognized amount of any non-controlling interests in the acquiree. When the excess is negative, a bargain purchase gain is recognized immediately in the consolidated income statements. The assessment of fair values on acquisition includes those mineral reserves and resources that are able to be reliably measured. In determining these fair values, management must also apply judgement in areas including future cash flows, metal prices, exchange rates and appropriate discount rates. Changes in such estimates and assumptions could result in significant differences in the amount of goodwill recognized. The consideration transferred is the aggregate of the fair values, at the date of the acquisition, of the sum of the assets transferred, the liabilities incurred or assumed, and the equity instruments issued by the acquirer in exchange for control of the acquiree. Acquisition-related costs are recognized in the consolidated income statements as incurred, unless they relate to issuance of debt or equity securities. Where applicable, the consideration transferred includes any asset or liability resulting from a contingent consideration arrangement and measured at its acquisition date fair value. Subsequent changes in such fair values are adjusted against the cost of acquisition where they qualify as measurement period adjustments. All other subsequent changes in the fair value of contingent consideration classified as an asset or liability are accounted for in accordance with relevant IFRS. Changes in the fair value of contingent consideration classified as equity are not recognized. Where a business combination is achieved in stages, the Company's previously held interests in the acquired entity are remeasured to fair value at the acquisition date, which is the date Hudbay attains control, and any resulting gain or loss is recognized in the consolidated income statements. Amounts previously recognized in other comprehensive income ("OCI") related to interests in the acquiree prior to the acquisition date are reclassified to the consolidated income statements, where such treatment would be appropriate if that interest were disposed of. After initial recognition, goodwill is measured at cost less any accumulated impairment losses. For the purpose of impairment testing, goodwill acquired in a business combination is, from the acquisition date, allocated to each of Hudbay's CGUs that are expected to benefit from the synergies of the combination, irrespective of whether other assets or liabilities of the acquiree are assigned to those units. Goodwill is allocated to the lowest level at which it is monitored for internal management purposes and is not larger than an operating segment before aggregation. Where goodwill forms part of a CGU and part of the operation within that unit is disposed of, the goodwill associated with the disposed operation is included in the determination of any gain or loss on disposal. Goodwill is not amortized and is tested for impairment annually and whenever there is an indication of impairment. If any such indication exists, the recoverable amount of the CGU is estimated in order to determine the extent of the impairment, if any. The recoverable amount is determined as the higher of fair value less direct costs to sell and the CGU's value in use. An impairment loss in respect of goodwill is not reversed. Fair value for mineral interests and related goodwill is generally determined as the present value of the estimated future cash flows expected to arise from the continued use of the asset, including any expansion prospects, and its eventual disposal, using assumptions that an independent market participant may take into account. Value in use is determined as the present value of the estimated future cash flows expected to arise from the continued use of the asset in its present form and its eventual disposal. Value in use is determined by applying assumptions specific to Hudbay's continued use and cannot take into account future development. The weighted average cost of capital of Hudbay or comparable market participants is used as a starting point for determining the discount rates, with appropriate adjustments for the risk profile of the countries in which the individual CGUs operate and the specific risks related to the development of the project. Where the asset does not generate cash flows that are independent of other assets, Hudbay estimates the recoverable amount of the CGU to which the asset belongs. If the carrying amount of an asset or CGU exceeds its recoverable amount, the carrying amount of the asset or CGU is reduced to its recoverable amount. An impairment loss is recognized as an expense in the consolidated income statements. (b) Translation of foreign currencies: Management determines the functional currency of each Hudbay entity as the currency of the primary economic environment in which the entity operates. Foreign currency transactions Transactions in foreign currencies are translated to the respective functional currencies of Hudbay's entities at exchange rates in effect at the transaction dates. At the end of each reporting period, monetary assets and liabilities denominated in foreign currencies are translated to the functional currency using the closing exchange rate. Non-monetary assets and liabilities measured at fair value are translated using the exchange rates at the date when fair value was determined. Non-monetary assets and liabilities measured at historical cost in a foreign currency are translated using exchange rates that were in effect at the transaction dates. The same translations are applied when an entity prepares its financial statements from books and records maintained in a currency other than its functional currency, except revenue and expenses may be translated at monthly average exchange rates that approximate those in effect at the transaction dates. Foreign currency gains and losses arising on period-end revaluations are recognized in the consolidated income statements, except for a financial liability designated as a hedge of a net investment in a foreign operation, or qualifying cash flow hedges, which are recognized in OCI. Foreign operations For the purpose of the consolidated financial statements, assets and liabilities of Hudbay's entities that have functional currencies other than the US dollar are translated to US dollars at the reporting date using the closing exchange rate. Revenue and expenses are translated at monthly average exchange rates that approximate those in effect at the transaction dates. Differences arising from these foreign currency translations are recognized in OCI and presented within equity in the foreign currency translation reserve. When a foreign operation is disposed, the relevant exchange differences accumulated in the foreign currency translation reserve are transferred to the consolidated income statements as part of the profit or loss on disposal. On the partial disposal of a subsidiary that includes a foreign operation, the relevant proportion of such amount is reattributed to non-controlling interests. On disposal of a partial investment in an associate or joint venture that includes a foreign operation while retaining significant influence or joint control, the relevant proportion is reclassified to profit or loss. Net investment in a foreign operation Foreign currency gains and losses arising on translation of a monetary item receivable from or payable to a foreign operation for which settlement is neither planned nor likely to occur in the foreseeable future are considered to form part of a net investment in the foreign operation. Such gains and losses are recognized in OCI and presented within equity in the foreign currency translation reserve. (c) Revenue recognition: Revenue from the sale of goods is measured at the fair value of the consideration received or receivable, net of treatment and refining charges. Revenue from the sale of by-products is included within revenue. Revenue is recognized when control of the goods sold has been transferred to the customer. Control is deemed to have passed to the customer when significant risk and reward of the product has passed to the customer, Hudbay has a present right to payment, and physical possession of the product has been transferred to the customer. Sales of doré are recorded when a trade confirmation is duly signed and executed between Hudbay and the end purchaser. Sale of concentrate and finished zinc frequently occur under the following terms, and management has assessed these terms in order to determine timing of transfer of control and revenue recognition as generally outlined in the following table. Incoterms used by Hudbay Revenue recognized when goods: Cost, Insurance and Freight (CIF) Are loaded on board the vessel Free on Board (FOB) Are loaded on board the vessel Delivered at place (DAP) Arrive at the named place of destination Delivered at terminal (DAT) Arrive at the named place of destination Free Carrier (FCA) Arrive at the named place of delivery Sales of concentrate and certain other products are provisionally priced. For these contracts, sales prices are subject to final adjustment at the end of a future period after shipment, based on quoted market prices during the quotational period specified in the contract. Revenue is recognized when the above criteria are achieved, using weight and assay results and forward market prices to estimate the fair value of the total consideration receivable. Therefore, revenue is initially recorded based on an initial provisional invoice. Subsequently, at each reporting date, until the provisionally priced sale is finalized, sales receivables are marked to market, with adjustments (both gains and losses) recorded within revenue separately as "Pricing and volume adjustments" in the notes to the consolidated financial statements and in trade and other receivables on the consolidated balance sheets. As per IFRS 15 Revenue from contracts with customers Financial Instruments Hudbay only includes in the transaction price an amount which is not highly likely to be subject to significant subsequent revenue reversal. Within sales contracts with customers, separate performance obligations may arise pertaining to the shipping of goods sold. If applicable, costs and the transaction price are allocated on a relative standalone selling basis to any separate performance obligations and are recognized over the period of time the goods sold are shipped, on a gross basis. Hudbay recognizes deferred revenue in the event it receives payments from customers before a sale meets criteria for revenue recognition. There is a significant financing component associated with the Company's precious metal streaming arrangements since funds were received in advance of the delivery of concentrate. When a significant financing component is recognized, finance expense will be higher and revenues will be higher as the larger deferred revenue balance is amortized to revenues. A market-based discount rate is utilized at the inception of each of the respective stream agreements to determine a discount rate for computing the interest charges for the significant financing component of the deferred revenue balance. As product is delivered, the deferred revenue amount including accreted interest will be drawn down. The draw down rate requires the use of proven and probable reserves and certain resources in the calculation that are beyond proven and probable reserves which management is reasonably confident will be transferable to reserves. Key estimates used in determining the significant financing component include the discount rate and the reserve and resources assumed for conversion. (d) Cost of sales: Cost of sales consists of those costs previously included in the measurement of inventory sold during the period, as well as certain costs not included in the measurement of inventory, such as the cost of warehousing and distribution to customers, provisional pricing adjustments related to purchased concentrates, profit sharing, royalty payments, share-based compensation expense and other indirect expenses related to producing operations. Cost of sales also include non-cash net realizable value adjustments to inventory, one-time adjustments related to overheads incurred when not operating at normal capacity and one-time labour charges related to facilitating the production of inventories for past service pension costs and severance. (e) Cash and cash equivalents: Cash and cash equivalents include cash, demand deposits and short-term, highly liquid investments that are readily convertible to known amounts of cash and are subject to an insignificant risk of changes in value. Cash equivalents have maturities of three months or less at the date of acquisition. Interest earned is included in finance income on the consolidated income statements and in investing activities on the consolidated statements of cash flows. Amounts that are restricted from being used for at least twelve months after the reporting date are classified as non-current assets and presented in restricted cash on the consolidated balance sheets. Changes in restricted cash balances are classified as investing activities on the consolidated statements of cash flows. (f) Inventories: Inventories consist of stockpiles, in-process inventory (concentrates and metals), metal products and supplies. Concentrates, doré, metals and all other saleable products are valued at the lower of cost and estimated net realizable value. Net realizable value represents the estimated selling price for inventories less all estimated direct and indirect costs of completion and costs necessary to make the sale. Where the net realizable value is less than cost, the difference is charged to the consolidated income statements as an impairment charge in cost of sales. Costs associated with stripping activities in an open pit mine are capitalized to inventory and recorded through cost of sales unless the stripping activity can be shown to improve access to further quantities of ore that will be mined in future periods, in which case, the stripping costs are capitalized to property, plant and equipment. Cost of production of concentrate inventory is determined on a weighted average cost basis and the cost of production of finished metal inventory is determined using the first in first out basis. The cost of production includes direct costs associated with conversion of production inventory based on normal production capacity: material, labour, contractor expenses, purchased concentrates, and an attributable portion of production overheads and depreciation of all property, plant and equipment involved with the mining and production process. Hudbay measures in-process inventories based on assays of material received at metallurgical plants and estimates of recoveries in the production processes. Due to significant uncertainty associated with volume and metal content, immaterial costs are not allocated to routine operating levels of stockpiled ore. Estimates and judgements are required to assess the nature of any significant changes to levels of ore stockpiles and determining whether allocation of costs is required. Supplies are valued at the lower of average cost and net realizable value. (g) Intangible assets: Computer software is measured at cost less accumulated amortization and accumulated impairment losses. Costs include all directly attributable costs necessary to create, produce and prepare the asset to be capable of operating it in the manner intended by management. Amortization methods, useful lives, and residual values if any, are reviewed at each year end and adjusted prospectively, if required. When an intangible asset is disposed of, or when no further economic benefits are expected, the asset is derecognized, and any resulting gain or loss is recorded in the consolidated income statements. Currently, the Company's intangible assets relate primarily to enterprise resource planning ("ERP") information systems, which are amortized over their estimated useful lives. (h) Exploration and evaluation expenditures: Exploration and evaluation activity begins when Hudbay obtains legal rights to explore a specific area and involves the search for mineral reserves, the determination of technical feasibility, and the assessment of commercial viability of an identified resource. Expenditures incurred in the exploration and evaluation phase include the cost of acquiring interests in mineral rights, licenses and properties and the costs of Hudbay's exploration activities, such as researching and analyzing existing exploration data, gathering data through geological studies, exploratory drilling, trenching, sampling, and certain feasibility studies. Hudbay expenses the cost of its exploration and evaluation activities and capitalizes the cost of acquiring interests in mineral rights, licenses and properties in business combinations, asset acquisitions or option agreements. Amounts capitalized are recognized as exploration and evaluation assets and presented in property, plant and equipment. Exploration and evaluation assets acquired as a result of an asset acquisition or option agreement are initially recognized at cost, and those acquired in a business combination are recognized at fair value on the acquisition date. They are subsequently carried at cost less accumulated impairment. No depreciation is charged during the exploration and evaluation phase. Hudbay expenses the cost of subsequent exploration and evaluation activity related to acquired exploration and evaluation assets. Cash flows associated with acquiring exploration and evaluation assets are classified as investing activities in the consolidated statements of cash flows; those associated with exploration and evaluation expenses are classified as operating activities. Judgement is required in determining whether the respective costs are eligible for capitalization where applicable, and whether they are likely to be recoverable, which may be based on assumptions about future events and circumstances. Estimates and assumptions made may change if new information becomes available. Hudbay monitors exploration and evaluation assets for factors that may indicate their carrying amounts are not recoverable. If such indicators are identified, the Company tests the exploration and evaluation assets or their CGUs, as applicable, for impairment. Hudbay also tests for impairment when assets reach the end of the exploration and evaluation phase. Exploration and evaluation assets are transferred to capital works in progress within property, plant and equipment once the Company determines that probable future economic benefits will be generated as a result of the expenditures. Hudbay's determination of probable future economic benefit is based on management's evaluation of the technical feasibility and commercial viability of the geological properties of a given ore body based on information obtained through evaluation activities, including metallurgical testing, resource and reserve estimates and the economic assessment of whether the ore body can be mined economically. Tools that may be used to determine this include a preliminary feasibility study, confidence in converting resources into reserves and the probability that the property could be developed into a mine site. At that time, the property is considered to enter the development phase, and subsequent evaluation costs are capitalized. (i) Property, plant and equipment: Hudbay measures items of property, plant and equipment at cost less accumulated depreciation and any accumulated impairment losses. The initial cost of an item of property, plant and equipment includes its purchase price or construction costs, including import duties and non-refundable purchase taxes, any costs directly attributable to bringing the asset into operation, and for qualifying assets, borrowing costs. The initial cost of property, plant and equipment also includes the initial estimate of the cost of dismantling and removing the item and restoring the site on which it is located, the obligation which Hudbay incurs either when the item is acquired or as a consequence of having used the item during a particular period for purposes other than to produce inventories during that period. Capitalization of costs ceases once an asset is in the location and condition necessary for it to be capable of operating in the manner intended by management. At this time, depreciation commences. For a new mine, this occurs upon commencement of commercial production. Up to and including December 31, 2020, any revenue, less cost to produce, earned in the process of preparing an asset to be capable of operating in the manner intended by management is included in the cost of the constructed asset. Any other incidental revenue earned prior to commencement of commercial production is recognized in the consolidated income statements. As a result of the early adoption of the amendments to IAS 16, since January 1, 2021, any revenues less cost to produce, earned prior to commencement of commercial production, are included in the consolidated income statements. Carrying amounts of property, plant and equipment, including right-of-use ("ROU") assets, are depreciated to their estimated residual value over the estimated useful lives of the assets or the estimated life of the related mine or plant, if shorter. Where components of an asset have different useful lives, depreciation is calculated on each separate component. Components may be physical or non-physical, including the cost of regular major inspections and overhauls required in order to continue operating an item of property, plant and equipment. Certain items of property, plant and equipment are depreciated on a unit-of-production basis. The unit-of-production method is based on proven and probable tonnes of ore reserves. There are numerous uncertainties inherent in estimating ore reserves, and assumptions that were valid at the reporting date may change when new information becomes available. The actual volume of ore extracted and any changes in these assumptions could affect prospective depreciation rates and carrying values. The carrying amount of an item of property, plant and equipment is derecognized on disposal or when no future economic benefits are expected from its use or disposal. Upon derecognition of an item of property, plant and equipment, the difference between its carrying value and net sales proceeds, if any, is presented as a gain or loss in other operating income or expense in the consolidated income statements. i. Capital works in progress consist of items of property, plant and equipment in the course of construction or mineral properties in the course of development, including those transferred upon completion of the exploration and evaluation phase. On completion of construction or development, costs are transferred to plant and equipment and/or mining properties as appropriate. Capital works in progress are not depreciated. ii. Mining properties consist of costs transferred from capital works in progress when a mining property reaches commercial production, costs of subsequent mine and exploration development, and acquired mining properties in the production stage. Mining properties include costs directly attributable to bringing a mineral asset into the state where it is capable of operating in the manner intended by management and includes such costs as the cost of shafts, ramps, track haulage drifts, ancillary drifts, pumps, electrical substations, refuge stations, ventilation raises, permanent manways, and ore and waste pass raises. The determination of development costs to be capitalized during the production stage of a mine operation requires the use of judgements and estimates such as estimates of tonnes of waste to be removed over the life of the mining area and economically recoverable reserves extracted as a result. A mining property is considered to be capable of operating in a manner intended by management when it commences commercial production based on pre-established criteria. Upon commencement of commercial production, a mining property is depreciated on a unit-of-production method. Unit-of-production depreciation rates are determined based on the related proven and probable mineral reserves and associated future development costs. Subsequent mine development costs are capitalized to the extent they are incurred in order to access reserves mineable over more than one year. Ongoing maintenance and development expenditures are expensed as incurred and included in cost of sales in profit or loss. These include ore stope access drifts, footwall and hangingwall drifts in stopes, drawpoints, drill drifts, sublevels, slots, drill raises, stope manway access raises and definition diamond drilling. iii. Plant and equipment consists of buildings and fixtures, surface and underground fixed and mobile equipment and assets under lease. Plant and equipment are depreciated on either unit-of-production or straight-line basis based on factors including the production life of assets and mineable reserves. In general, mining assets are depreciated using a unit-of-production method; equipment is depreciated using the straight-line method, based on the shorter of its useful life and that of the related mine or facility; and plants are depreciated using the straight-line method, with useful lives limited by those of related mining assets. iv. At inception of a contract, Hudbay assesses whether a contract is, or contains, a lease. A contract is, or contains, a lease if the contract conveys the right to control the use of an identified asset for a period of time in exchange for consideration. The Company assesses the following criteria in the determination of whether a contract conveys the right to control the use of an identified asset: • • • • • The Company recognizes a ROU asset and lease liability at the lease commencement date. The initial measurement of the ROU asset is on a present value basis. This is based on the calculated lease liability plus any initial direct costs incurred, an estimate of removal or restoration costs, and any payments made prior to commencement of the lease less any lease incentives received. The right of use asset is subsequently depreciated using the straight-line method from the commencement date to the earlier of the end of the useful life of the right-of-use asset or the end of the lease term. The estimated useful lives of the right-of-use assets are determined on the same basis as those of property and equipment. In addition, the right-of-use asset is periodically reduced by impairment losses, if any, and adjusted for certain remeasurements of the lease liability. The lease liability is measured at the present value of the lease payments that are yet to be paid at the commencement date, discounted using the interest rate implicit in the lease or, if that rate cannot be easily determined, Hudbay's incremental borrowing rate. Generally, the Company uses its incremental borrowing rate as the discount rate for applicable leases. Lease payments included in the measurement of the lease liability comprise fixed payments including in substance fixed payments and variable payments that depend on an index or rate, amounts expected to be payable under a residual value guarantee and the additional costs Hudbay reasonably expects to incur due to purchase options, extension options and termination options reasonably expected to be exercised. The lease liability is measured at amortized cost using the effective interest method. It is remeasured when there is a change in the expected future cash flows of a leasing contract either due to a change in index or rate, or due to a change in terms of the contract. When the lease liability is remeasured in this way, a corresponding adjustment is made to the carrying amount of the right-of-use asset, or is recorded in profit or loss if the carrying amount of the right-of-use asset is zero. Hudbay has elected not to separate non-lease components and account for the lease and non-lease components as a single lease component for lease contracts of all asset classes. The Company has elected not to recognize ROU assets and lease liabilities for short-term leases of machinery that have a lease term of 12 months or less and leases of low-value assets. Hudbay recognizes the lease payments associated with these leases as an expense on a straight-line basis over the lease term. Hudbay does not enter into transactions where the Company acts as a lessor. The incremental borrowing rate used for new ROU leases is a key management judgement. v. • • • • ◦ ◦ • Hudbay reviews its depreciation methods, remaining useful lives and residual values at least annually and accounts for changes in estimates prospectively. vi. Commercial production is the level of activities intended by management for a mine, or a mine and mill complex, to be capable of operating in the manner intended by management. Hudbay considers a range of factors when determining the level of activity that represents commercial production for a particular project, including a predetermined percentage of design capacity for the mine and mill; achievement of continuous production, ramp-ups, or other output; or specific factors such as recoveries, grades, or inventory build-ups. In a phased mining approach, management may consider achievement of specific milestones at each phase of completion. In a non-phased mining approach, management considers average actual metrics that are at least 60% of average design capacity or plan over a continuous period. Management assesses the operation's ability to sustain production over a period of approximately one to three months, depending on the complexity related to the stability of continuous operation. Commercial production is considered to have commenced, and depreciation expense is recognized, at the beginning of the month after criteria have been met. vii. The Company capitalizes borrowing costs that are directly attributable to the acquisition, construction or production of qualifying assets, which are assets that necessarily take a substantial period of time, generally one year or more, to get ready for their intended use or sale. Capitalization of borrowing costs ceases once the qualifying assets commence commercial production or are otherwise ready for their intended use or sale. Where funds are borrowed specifically to finance a project, the amount capitalized represents the actual borrowing costs incurred. Where the funds used to finance a project form part of general borrowings, the amount capitalized is calculated using a weighted average of interest rates applicable to relevant general borrowings of Hudbay during the period, to a maximum of actual borrowing costs incurred. Investment income earned by temporarily investing specific borrowings pending their expenditure on qualifying assets is deducted fr

New standards

New standards	12 Months Ended
	Dec. 31, 2021
Disclosure of changes in accounting estimates [abstract]
New standards [Text Block]	4. New standards New standards and interpretations adopted (a) Amendment to IAS 16 - Property, Plant and Equipment The amendments to IAS 16 prohibit deducting from the cost of property, plant and equipment the proceeds from selling items produced while bringing the assets to the location and condition necessary for them to be capable of operating in the manner intended by management. Instead, a company will recognize such sales proceeds and related cost in profit or loss. This amendment is in effect January 1, 2022 with early adoption permitted. Hudbay has early adopted this amendment as of January 1, 2021 with retrospective application only to items of property, plant and equipment that were brought to the location and condition necessary for them to be capable of operating in the manner intended by management on or after January 1, 2020. No restatement of prior periods was required on adoption given the comparable periods contained no items would have been impacted by this accounting amendment. (b) Interest Rate Benchmark Reform - Phase II - Amendments to IFRS 9, IAS 39, IFRS 7, IFRS 4 and IFRS 16 These amendments require companies to determine if there is a significant change in the basis of determining contractual cash flows as a result of interest rate benchmark reform / IBOR reform. A company will be required to determine if the replacement of an existing interest rate benchmark with an alternative rate benchmark results in contractual cash flows that are significantly different for financial instruments, lease payments, insurance contracts and/or items that use hedge accounting. If IBOR reform result in a transition on an economically equivalent basis with no value transfer having occurred, the changes to the standard allow the contractual cash flow changes to be applied prospectively, similar to a change in a market rate. For Hudbay, these amendments have been in effect since January 1, 2021 and have not resulted in material changes to the financial statements. As at December 31, 2021, Hudbay has not entered into any new contracts or contract modifications that are dependent on the LIBOR rate and that are impacted by these amendments to IFRS 9, IAS 39, IFRS 7, IFRS 4 and IFRS 16. New standards and interpretations not yet adopted (c) Amendment to IAS 1 - Presentation of Financial Statements The amendments to IAS 1 promote consistency in applying the requirements by helping companies determine whether, in the statement of financial position, debt and other liabilities with an uncertain settlement date should be classified as current (due to potentially due to be settled within one year) or non-current. This amendment is in effect January 1, 2023 with early adoption permitted.

Revenue and expenses

Revenue and expenses	12 Months Ended
	Dec. 31, 2021
Analysis of income and expense [abstract]
Revenue and expenses [Text Block]	5. Revenue and expenses (a) Revenue Hudbay's revenue by significant product types: Year ended 2021 2020 Copper $ 873,339 $ 563,910 Zinc 301,086 264,106 Gold 246,562 180,949 Silver 26,932 25,986 Molybdenum 37,487 25,627 Other 7,454 5,619 Revenue from contracts 1,492,860 1,066,197 Non-cash streaming arrangement items 1 Amortization of deferred revenue - gold 37,788 27,854 Amortization of deferred revenue - silver 33,731 39,409 Amortization of deferred revenue - variable 1,617 6,668 73,136 73,931 Pricing and volume adjustments 2 (8,568 ) 9,178 1,557,428 1,149,306 Treatment and refining charges (55,430 ) (56,888 ) $ 1,501,998 $ 1,092,418 1 2 Consideration from the Company's stream agreements is considered variable (note 17). Gold and silver stream revenue can be subject to cumulative adjustments when the amount of precious metals to be delivered under the contract changes. As a result of changes in the Company's mineral reserve and resource estimate in the first quarter of 2021, the amortization rate by which deferred revenue is drawn down into income was adjusted and, as required, a catch up adjustment was made for all prior year stream revenues since the stream agreement inception date. This variable consideration adjustment resulted in an increase of revenue of $1,617 for the year ended December 31, 2021. The variable consideration adjustment for the year ended December 31, 2020 resulted in an increase of revenue of $6,668. This increase in revenue was primarily the result of updates to the 777 mine plan resulting in the mining of fewer inferred resources than what was planned previously. In the second quarter of 2021, the Company finalized an amendment with Wheaton Precious Metals ("Wheaton") related to the Peru stream agreement. The result of the amendment was a revision to the Peru gold and silver deferred revenue amortization rates and the related significant financing component. For further details refer to note 17. (b) Mine operating costs During the year ended December 31, 2021, Hudbay recognized a recovery of $1,446 in cost of sales related to adjustments of the carrying value of Peru inventories to net realizable value and a non-cash write-down of materials and supplies inventories of $5,445 (year ended December 31, 2020 - $2,302 net expense) (note 8). In addition, the Company recognized a past service cost provision adjustment related to pensions for certain Manitoba employees of $4,989 (note 5e). (c) Depreciation and amortization Depreciation of PP&E and amortization of intangible assets are reflected in the consolidated income statements as follows: Year ended 2021 2020 Cost of sales $ 357,924 $ 361,827 Selling and administrative expenses 1,843 1,776 $ 359,767 $ 363,603 Effective January 1, 2021, the Company made a change in estimate in Peru for certain mineral property PP&E assets to utilize contained metal in the depreciation calculation. This better reflects the systematic allocation of costs to inventory given the change in grade profile following the recently published NI 43-101. For the year ended December 31, 2021, depreciation expense is higher by $4,835, compared to the result under the previous depreciation calculation. Since the change is in response to an updated life-of-mine plan, it is being treated as a change in estimate and applied prospectively. Please see note 11 for further details. (d) Share-based compensation expenses Share-based compensation expenses are reflected in the consolidated income statements as follows: Cash-settled Total share-based RSUs DSUs PSUs Stock options Year ended December 31, 2021 Cost of sales $ 1,347 $ - $ - $ - $ 1,347 Selling and administrative 3,668 1,459 3,382 1,919 10,428 Other expenses 370 - - - 370 $ 5,385 $ 1,459 $ 3,382 $ 1,919 $ 12,145 Year ended December 31, 2020 Cost of sales $ 1,400 $ - $ - $ - $ 1,400 Selling and administrative 4,872 5,149 1,987 $ 1,122 13,130 Other expenses 478 - - - 478 $ 6,750 $ 5,149 $ 1,987 $ 1,122 $ 15,008 During the year ended December 31, 2021, the Company granted 509,385 stock options (year ended December 31, 2020 - 1,581,385). For further details on stock options, see note 23b. (e) This table presents employee benefit expense recognized in the consolidated income statements, including amounts transferred from inventory upon sale of goods: Year ended December 31, 2021 2020 Current employee benefits $ 205,402 $ 179,486 Share-based compensation (notes 5d, 18, 23) Equity settled stock options 1,919 1,122 Cash-settled restricted share units 5,385 6,750 Cash-settled deferred share units 1,459 5,149 Cash-settled performance share units 3,382 1,987 Employee share purchase plan 1,933 1,783 Post-employee pension benefits Defined benefit plans 11,433 11,671 Defined contribution plans 2,061 1,774 Past service costs (note 19) 4,989 - Other post-retirement employee benefits 7,526 9,305 Termination benefits 470 582 $ 245,959 $ 219,609 Manitoba has a profit sharing plan required by the collective bargaining agreement whereby 10% of Manitoba's after tax profit (excluding provisions or recoveries for deferred income tax and deferred mining tax) for any given fiscal year will be distributed to all eligible employees in the Flin Flon/Snow Lake operations, with the exception of executive officers and key management personnel. Peru has a profit sharing plan required by Peruvian law whereby 8% of Peru's taxable income will be distributed to all employees within Peru's operations The Company has an employee share purchase plan for executives and other eligible employees where participants may contribute between 1% and 10% of their pre-tax base salary to acquire Hudbay shares. The Company makes a matching contribution of 75% of the participant's contribution. See note 19 for a description of Hudbay's pension plans and note 20 for Hudbay's other employee benefit plans. (f) Year ended December 31, 2021 2020 Regional costs $ 3,652 $ 3,602 Loss on disposal of property, plant and equipment 7,038 5,088 Closure cost adjustment - non-producing properties (4,602 ) 2,721 Allocation of community costs 1,768 2,880 Restructuring - Manitoba 6,947 - Copper World Preliminary Economic Assessment ("PEA") study costs 12,555 - Other 2,421 3,292 $ 29,779 $ 17,583 Due to rising risk-free interest rates during the first quarter of 2021, the discount rates used in the normal course revaluation of the DRO increased correspondingly, resulting in a reduction in the associated liabilities. For certain closed sites with such reclamation obligations, the revaluat During 2021, there were costs incurred related to the restructuring of the Manitoba operations in preparation for the closure of 777 mine of $6,947. These costs were primarily related to severance packages for unionized and certain salaried employees. Copper World PEA study costs primarily relate to Copper World project costs that are not associated with Rosemont. (g) Year ended December 31, 2021 2020 Net interest expense on long-term debt Interest expense on long-term debt $ 74,748 $ 82,712 Accretion on streaming arrangements (note 17) Additions 42,060 60,362 Variable consideration adjustments - prior periods 594 (3,692 ) 42,654 56,670 Change in fair value of financial assets and liabilities at fair value through profit or loss Embedded derivatives (note 16) 49,754 (45,387 ) Gold prepayment liability 293 20,141 Investments 4,467 (4,124 ) 54,514 (29,370 ) Other net finance costs Net foreign exchange losses (gains) 1,403 (1,644 ) Accretion on community agreements measured at amortized cost 2,811 3,641 Accretion on environmental provisions 4,988 3,543 Withholding taxes 7,727 8,267 Premium paid on redemption of notes (note 16) 22,878 7,252 Write-down of unamortized transaction costs (note 16) 2,480 3,817 Other finance expense 7,813 8,826 Interest income (997 ) (1,812 ) 49,103 31,890 Net finance expense $ 221,019 $ 141,902 Other finance expense relates primarily to fees on Hudbay's revolving credit facilities and leases. (h) Impairment - Environmental Obligation During the third and fourth quarter of 2021, an impairment indicator was identified in relation to a revised Flin Flon closure plan. The revised closure plan, reflecting higher cost estimates, led to a large increase in the environmental obligation (note 18) and a corresponding increase to Flin Flon PP&E. The increase in Flin Flon PP&E prompted an impairment test of these assets since the Flin Flon operation is expected to close mid-2022. Hudbay recorded an impairment to PP&E by comparing the carrying value of the Flin Flon operation to its recoverable amount using the value-in-use method for future cash flows associated with the operation until closure. The value-in-use recoverable amount is considered a level 3 valuation method and incorporating assumptions for commodity prices, foreign exchange rates, remaining reserves, timing of extraction and operating costs. No discount rate was applied given the operating life of the asset is less than one year. This resulted in an impairment loss of $193,473 for the year ended December 31, 2021. Given the closure is expected to occur in less than 12 months, future adjustments to the Flin Flon environmental provision from fair value adjustments, or otherwise, may lead to future impairment tests of the Flin Flon operation and any resulting impairments or impairment reversals will be recognized in the consolidated income statements.

Cash

Cash	12 Months Ended
	Dec. 31, 2021
Cash and cash equivalents [abstract]
Cash [Text Block]	6. Cash Cash balances represent demand deposits and deposits with an original maturity date of less than 3 months.

Trade and other receivables

Trade and other receivables	12 Months Ended
	Dec. 31, 2021
Trade and other receivables [abstract]
Trade and other receivables [Text Block]	7. Trade and other receivables Dec. 31, 2021 Dec. 31, 2020 Current Trade receivables $ 166,524 $ 107,787 Statutory receivables 31,191 28,445 Other receivables 6,366 4,967 204,081 141,199 Non-current Taxes receivable 16,084 16,941 Other receivables - 1,627 16,084 18,568 $ 220,165 $ 159,767 The increase in trade receivables during the year ended December 31, 2021 primarily relates to three shipments, representing approximately 30,000 tonnes of copper, which occurred late in the fiscal year and received revenue recognition but for which timing of cash receipts occur in 2022.

Inventories

Inventories	12 Months Ended
	Dec. 31, 2021
Disclosure Of Inventories [Abstract]
Inventories [Text Block]	8. Inventories Dec. 31, 2021 Dec. 31, 2020 Current Stockpile $ 12,768 $ 13,906 Work in progress 5,647 6,364 Finished goods 78,958 72,923 Materials and supplies 61,080 49,912 158,453 143,105 Non-current Stockpile 34,156 16,704 Materials and supplies 3,417 5,302 37,573 22,006 $ 196,026 $ 165,111 The cost of inventories recognized as an expense, including depreciation, and included in cost of sales amounted to $1,069,309 for the year ended December 31, 2021 (year ended December 31, 2020 - $921,895). During the year ended December 31, 2021, Hudbay recognized a recovery of $1,446 in cost of sales related to adjustments of the carrying value of Peru inventories to net realizable value (year ended December 31, 2020 - $2,302 net expense). Adjustments to the carrying value of inventories to net realizable value were related to changes in commodity prices. Due to the upcoming closure of the Flin Flon operation, certain long term inventory supplies which are not expected to be utilized were written down and $5,445 was charged to mine operating costs for the year ended December 31, 2021 (note 5b). Effective January 1, 2021, following a new NI 43-101 technical report for Peru, which reflects an updated mine plan with a new grade and ore tonnage profile, the Company changed its method of estimation of applying mining costs to stockpile and finished goods inventory. Prior to this change, mining costs were allocated using tonnes of ore mined. Starting January 1, 2021, Peru mining costs have been allocated to inventories using contained metal, incorporating tonnes of ore mined and expected mined grades. Since the change is in response to an updated life-of-mine plan, it is being treated in accordance with a change in estimate and will be applied prospectively. For the year ended December 31, 2021, as a result of the change in allocation, stockpile inventories have declined by $6,784 and finished goods inventories have increased by $756.

Other financial assets

Other financial assets	12 Months Ended
	Dec. 31, 2021
Disclosure of financial assets [abstract]
Other financial assets [Text Block]	9. Other financial assets Dec. 31, 2021 Dec. 31, 2020 Current Derivative assets $ 7,430 $ 2,736 Restricted cash 437 337 7,867 3,073 Non-current Investments at fair value through profit or loss 11,158 15,669 $ 19,025 $ 18,742 The derivative assets include derivative and hedging transactions. Derivative assets are carried at their fair value with changes in fair value recorded to the consolidated income statements. The fair value adjustments for hedging type derivatives are recorded in revenue. Investments at fair value through profit or loss consist of securities in Canadian metals and mining companies, all of which are publicly traded. The change in investments at fair value through profit or loss is mostly attributed to fluctuations in market price and foreign exchange impact.

Intangibles and other assets

Intangibles and other assets	12 Months Ended
	Dec. 31, 2021
Disclosure of detailed information about intangible assets [abstract]
Intangibles and other assets [Text Block]	10. Intangibles and other assets Intangibles and other assets of $20,138 (December 31, 2020 - $21,173) includes $14,240 of other assets (December 31, 2020 - $15,764) and $5,898 of intangibles (December 31, 2020 - $5,409). Other assets represent the carrying value of certain future community costs that relate to original agreements with communities for the Constancia operation which allow Hudbay to extract minerals over the useful life of the Constancia operation. The liability remaining for these costs is recorded in agreements with communities recorded at amortized cost (note 14). Amortization of the carrying amount is recorded in the consolidated income statements within other expenses (note 5f) or exploration expense, depending on the nature of the agreement. Intangibles mainly represent computer software costs. The following table summarizes changes in intangibles: Dec. 31, 2021 Dec. 31, 2020 Cost Balance, beginning of year $ 23,350 $ 21,538 Additions 968 1,466 Disposals - - Transfers 386 - Effects of movement in exchange rates 64 346 Balance, end of year 24,768 23,350 Accumulated amortization Balance, beginning of year 17,941 16,511 Additions 872 1,138 Disposals - - Effects of movement in exchange rates 57 292 Balance, end of year 18,870 17,941 Intangibles, net book value $ 5,898 $ 5,409

Property, plant and equipment

Property, plant and equipment	12 Months Ended
	Dec. 31, 2021
Disclosure of detailed information about property, plant and equipment [abstract]
Property, plant and equipment [Text Block]	11. Property, plant and equipment Dec. 31, 2021 Exploration and evaluation assets Capital works in progress Mining properties Plant and equipment Plant and equipment- ROU assets 1 Total Balance, Jan. 1, 2021 $ 79,059 $ 957,162 $ 2,217,461 $ 2,793,719 $ 214,303 $ 6,261,704 Additions 9,084 268,090 1,731 17,735 49,695 346,335 Capitalized stripping and development - - 79,426 - - 79,426 Decommissioning and restoration - (525 ) 4,630 139,911 - 144,016 Transfers and other movements - (357,381 ) 128,320 229,981 (920 ) - Disposals - (5,941 ) - (10,803 ) (3,544 ) (20,288 ) Impairment - - (1,054 ) (192,419 ) - (193,473 ) Effects of movements in exchange rates 64 (3,175 ) 3,486 5,795 192 6,362 Balance, Dec. 31, 2021 88,207 858,230 2,434,000 2,983,919 259,726 6,624,082 Accumulated depreciation Balance, Jan. 1, 2021 - - 1,126,274 1,271,581 132,194 2,530,049 Depreciation for the year - - 155,878 181,565 24,536 361,979 Disposals - - - (8,525 ) (3,158 ) (11,683 ) Effects of movement in exchange rates - - 2,217 501 53 2,771 Balance, Dec. 31, 2021 - - 1,284,369 1,445,122 153,625 2,883,116 Net book value $ 88,207 $ 858,230 $ 1,149,631 $ 1,538,797 $ 106,101 $ 3,740,966 1 Dec. 31, 2020 Exploration and evaluation assets Capital works in progress Mining properties Plant and equipment Plant and equipment- ROU assets 1 Total Balance, January 1, 2020 $ 69,903 $ 733,874 $ 2,146,583 $ 2,653,752 $ 201,972 $ 5,806,084 Additions 809 256,251 311 28,523 17,759 303,653 Capitalized stripping and development - - 83,137 - - 83,137 Decommissioning and restoration - 263 6,849 39,680 - 46,792 Transfers and other movements 8,040 (36,668 ) (41,256 ) 70,777 (893 ) - Disposals - - - (19,681 ) (5,884 ) (25,565 ) Effects of movements in exchange rates 307 3,442 21,837 20,668 1,349 47,603 Balance, Dec. 31, 2020 79,059 957,162 2,217,461 2,793,719 214,303 6,261,704 Accumulated depreciation Balance, January 1, 2020 - - 963,530 1,069,687 110,308 2,143,525 Depreciation for the year - - 146,113 200,632 23,351 370,096 Disposals - - - (14,038 ) (2,475 ) (16,513 ) Effects of movement in exchange rates - - 16,631 15,300 1,010 32,941 Balance, Dec. 31, 2020 - - 1,126,274 1,271,581 132,194 2,530,049 Net book value $ 79,059 $ 957,162 $ 1,091,187 $ 1,522,138 $ 82,109 $ 3,731,655 During the third quarter of 2021, an impairment indicator was identified in relation to a revised Flin Flon closure plan. The revised closure plan, reflecting higher cost estimates, led to a large increase in the environmental obligation (note 18) and a corresponding increase to Flin Flon PP&E. The increase in Flin Flon PP&E prompted an impairment test of these assets since the Flin Flon operation is expected to close mid-2022. Hudbay recorded an impairment to PP&E by comparing the carrying value of the Flin Flon operation to its recoverable amount using the value-in-use method for future cash flows associated with the operation until closure. The value-in-use recoverable amount is considered a level 3 valuation method. This resulted in an impairment loss of $147,305. During the fourth quarter, as a result of declines in risk-free discount rates and with the Flin Flon operation being near closure, the same recoverability of assets test was performed. This resulted in an impairment loss of $46,168. Given the closure is expected to occur in less than 12 months, the impairment was charged to the consolidated income statements. For more information see note 5h. Given the closure is expected to occur in less than 12 months, future adjustments to the Flin Flon environmental provision from fair value adjustments, or otherwise, may lead to future impairment tests of the Flin Flon operation and any resulting impairments or impairment reversals will be charged to the consolidated income statements. Effective January 1, 2021, following a new NI 43-101 technical report for Peru, the Company made a change in estimate for the depreciation calculation of certain mineral property PP&E assets in Peru to utilize contained metal. This better reflects the systematic allocation of costs to inventory given the change in grade profile following the recently published NI 43-101. Since the change is in response to an updated life-of-mine plan, it is being treated in accordance with a change in estimate and will be applied prospectively. For the year ended December 31, 2021, depreciation expense is higher by $4,835 compared to the result under the previous depreciation calculation.

Trade and other payables

Trade and other payables	12 Months Ended
	Dec. 31, 2021
Trade and other payables [abstract]
Trade and other payables [Text Block]	12. Trade and other payables Dec. 31, 2021 Dec. 31, 2020 Trade payables $ 84,279 $ 104,598 Accruals and payables 84,992 72,698 Accrued interest 16,120 30,766 Exploration and evaluation payables 3,788 1,351 Statutory payables 18,598 23,734 $ 207,777 $ 233,147 Accruals and payables include operational and capital costs and employee benefit amounts owing.

Other liabilities

Other liabilities	12 Months Ended
	Dec. 31, 2021
Miscellaneous current liabilities [abstract]
Other liabilities [Text Block]	13. Other liabilities Dec. 31, 2021 Dec. 31, 2020 Current Environmental and other provisions (note 18) $ 41,017 $ 33,675 Pension liability (note 19) 10,472 13,552 Other employee benefits (note 20) 3,530 3,154 Unearned revenue 7,983 1,590 $ 63,002 $ 51,971

Other financial liabilities

Other financial liabilities	12 Months Ended
	Dec. 31, 2021
Disclosure of financial liabilities [abstract]
Other financial liabilities [Text Block]	14. Other financial liabilities Dec. 31, 2021 Dec. 31, 2020 Current Derivative liabilities $ 12,451 $ 15,312 Deferred Rosemont acquisition consideration 9,713 - Gold prepayment liability 71,394 - Agreements with communities recorded at amortized cost 7,144 9,401 100,702 24,713 Non-current Deferred Rosemont acquisition consideration 17,805 25,961 Gold prepayment liability 68,614 137,031 Wheaton refund liability (note 17) 5,424 - Agreements with communities recorded at amortized cost 29,129 31,386 120,972 194,378 $ 221,674 $ 219,091 The derivative liabilities include derivative and hedging transactions. Derivative liabilities are carried at their fair value with changes in fair value recorded to the consolidated income statements. The fair value adjustments for hedging type derivatives are recorded in revenue. Fair value adjustments for embedded derivatives are recorded within net finance expense. As part of the streaming agreement for the 777 mine, Hudbay must repay, with precious metals credits, the deposit by August 1, 2052, the expiry date of the agreement. If the stream deposit is not fully repaid with precious metals credits from 777 production by the expiry date, a payment for the remaining amount will be due at the expiry date of the agreement. Given revised resource estimates and the planned closure of the 777 mine in 2022, Hudbay believes such a payment is expected and as such, as at December 31, 2021 the estimated repayment amount was reclassified to a refund liability. This is and will be discounted at the 9.0% rate inherent in the original agreement and accreted over the remaining term of the agreement. On May 7, 2020, the Company entered into a gold prepayment transaction and received $115,005 in exchange for the delivery of 79,954 gold ounces starting January 2022 and ending in December 2023, which were valued at gold forward curve prices averaging $1,682 per ounce at the time of the transaction. The agreement has been assessed as a financial liability that has been designated as fair value through profit or loss within change in fair value of financial instruments, with a component of the fair value related to the fluctuation in the Company's own credit risk being recorded to other comprehensive income. The pre-tax fair value adjustment recorded in profit or loss and other comprehensive income for the year ended December 31, 2021 totaled a net loss of $2,977 (year ended December 31, 2020 - net losses of $22,026). Agreements with communities recorded at amortized cost relate to agreements with communities near the Constancia operation which allow Hudbay to extract minerals over the useful life of the Constancia operation, carry out exploration and evaluation activities in the area and provide Hudbay with community support to operate in the region. The changes in agreements with communities recorded at amortized cost during the year ended December 31, 2021 primarily relates to the execution of the remaining land user agreements with certain community members, partially offset by disbursements. The following table summarizes changes in agreements with communities recorded at amortized cost: Balance, January 1, 2020 $ 24,000 Net additions 116,233 Disbursements (98,375 ) Accretion 3,641 Effects of changes in foreign exchange (4,712 ) Balance, December 31, 2020 $ 40,787 Net additions 22,796 Disbursements (26,511 ) Accretion 2,811 Effects of changes in foreign exchange (3,610 ) Balance, December 31, 2021 $ 36,273

Lease Liability

Lease Liability	12 Months Ended
	Dec. 31, 2021
Lease liabilities [abstract]
Lease Liability [Text Block]	15. Lease Liability Balance, January 1, 2020 $ 81,947 Additional capitalized leases 17,759 Lease payments (35,980 ) Accretion and other movements (212 ) Balance, December 31, 2020 $ 63,514 Additional capitalized leases 49,695 Lease payments (37,719 ) Accretion and other movements 1 2,512 Balance, December 31, 2021 $ 78,002 1 Lease liabilities are reflected in the consolidated balance sheets as follows: Dec. 31, 2021 Dec. 31, 2020 Current $ 33,529 $ 33,473 Non-current 44,473 30,041 $ 78,002 $ 63,514 Hudbay has entered into leases for its Peru, Manitoba and Arizona business units which expire between 2022 and 2043. The interest rates on leases which were capitalized have interest rates between 2.50% to 7.43%, per annum. The range of interest rates utilized for discounting varies depending mostly on the Hudbay entity acting as lessee and duration of the lease. For certain leases, Hudbay has the option to purchase the equipment and vehicles leased at the end of the terms of the leases. Hudbay's obligations under these leases are secured by the lessor's title to the leased assets. The present value of applicable lease payments has been recognized as an ROU asset, which was included as a non-cash addition to property, plant and equipment, and a corresponding amount as a lease liability. There are no restrictions placed on Hudbay by entering into these leases. The following outlines expenses recognized within the Company's consolidated income statements for the years ended December 31, 2021 and December 31, 2020, relating to leases for which a recognition exemption was applied. Year ended December 31, 2021 2020 Short-term leases $ 38,092 $ 40,253 Low value leases 407 353 Variable leases 58,626 57,389 Total $ 97,125 $ 97,995 Payments made for short term, low value and variable leases would mostly be captured as expenses in the consolidated income statements, however, certain amounts may be capitalized to PP&E for the Arizona business unit during its development phase and certain amounts may be reported in inventories given the timing of sales. Variable consideration leases include equipment used for heavy civil works at Constancia.

Long-term debt

Long-term debt	12 Months Ended
	Dec. 31, 2021
Disclosure of detailed information about borrowings [abstract]
Long-term debt [text block]	16. Long-term debt Long-term debt is comprised of the following: Dec. 31, 2021 Dec. 31, 2020 Senior unsecured notes (a) $ 1,185,805 $ 1,139,695 Less: Unamortized transaction costs - (5,531 ) (4,020 ) $ 1,180,274 $ 1,135,675 (a) Senior unsecured notes Balance, January 1, 2020 $ 991,558 Addition to Principal, net of $8,176 transaction costs 591,824 Principal repayments (400,000 ) Change in fair value of embedded derivative (prepayment option) (47,169 ) Write-down of unamortized transaction costs 2,315 Accretion of transaction costs and premiums 1,167 Balance, December 31, 2020 $ 1,139,695 Addition to Principal, net of $8,078 transaction costs 591,922 Principal repayments (600,000 ) Write-down of fair value of embedded derivative (prepayment option) 49,754 Write-down of unamortized transaction costs 2,480 Accretion of transaction costs and premiums 1,954 Balance, December 31, 2021 $ 1,185,805 As at December 31, 2021, $1,200,000 aggregate principal amount of senior notes were outstanding in two series: (i) a series of 4.50% senior notes due 2026 in an aggregate principal amount of $600,000 (the "2026 Notes") and (ii) a series of 6.125% senior notes due 2029 in an aggregate principal amount of $600,000 (the "2029 Notes"). 2026 Notes On March 8, 2021, Hudbay completed an offering of $600,000 aggregate principle amount of 4.50% senior unsecured notes due April 2026. Hudbay used the proceeds of the offering, together with available cash on hand, to satisfy and discharge all of its obligations with respect to its then outstanding $600,000 aggregate principal amount of 7.625% senior unsecured notes due 2025 (the "2025 Notes"). Upon extinguishment of the 2025 Notes, the unamortized transaction costs of $2,480 were expensed in the consolidated income statements (note 5g). The 2025 Notes contained a prepayment option asset (note 26d), which was previously valued at $49,754 and upon early redemption was written off and expensed in the consolidated income statements (note 5g) The early redemption of the 2025 Notes also resulted in a call premium of $22,878 payable to the bondholders, which was expensed in the consolidated income statements (note 5g). 2029 Notes On September 23, 2020, Hudbay completed an offering of $600,000 aggregate principal amount of 6.125% senior unsecured notes due April 2029 (the "2029 Notes"). Hudbay used the proceeds of the offering to satisfy and discharge all of its obligations with respect to its then outstanding $400,000 aggregate principal amount of 7.25% senior unsecured notes due 2023 (the "2023 Notes"). In 2020, the unamortized transaction costs of $2,315 were expensed upon extinguishment of the 2023 Notes. The early redemption of these notes resulted in a call premium of $7,252, payable to the bondholders, which was expensed in the consolidated income statements (note 5g). The senior notes are guaranteed on a senior unsecured basis by substantially all of the Company's subsidiaries, other than HudBay (BVI) Inc. and certain excluded subsidiaries, which include the Company's subsidiaries that own an interest in the Rosemont, Copper World and Mason projects and any newly formed or acquired subsidiaries that primarily hold or may develop non-producing mineral assets that are in the pre-construction phase of development. Hudbay's revolving credit facilities are secured against substantially all of the Company's assets, other than those associated with the Arizona business unit. (b) Unamortized transaction costs - revolving credit facilities Balance, January 1, 2020 $ 6,303 Accretion of transaction costs (3,062 ) Write-down of unamortized transaction costs (1,502 ) Transaction costs 2,281 Balance, December 31, 2020 $ 4,020 Accretion of transaction costs (2,816 ) Transaction costs 4,327 Balance, December 31, 2021 1 $ 5,531 1 On October 26, 2021, the Company amended and restated its senior secured revolving credit facilities to increase the total amount of available borrowings from $400 million to $450 million, eliminate certain financial covenants and amend others to increase its financial flexibility, reduce the effective interest rate and extend the maturity to October 26, 2025. On August 31, 2020, Hudbay completed a restructuring of its two senior secured credit facilities. The total available credit was reduced from $550,000 to $400,000 and various financial covenants were amended. The unamortized transaction costs of $1,502 were expensed upon restructuring of the credit facilities. As at December 31, 2021, the Peru business unit had etters d Surety bonds The Arizona business unit had $28,291 in surety bonds issued to support future reclamation and closure obligations. No cash collateral is required to be posted under these surety bonds. Other letters of credit The Peru business u letters of credit issued with various Peruvian financial institutions to support future reclamation and other operating matters. No cash collateral is required to be posted under these letters of credit.

Deferred revenue

Deferred revenue	12 Months Ended
	Dec. 31, 2021
Disclosure Of Deferred Revenue [Abstract]
Deferred revenue [Text Block]	17. Deferred revenue On August 8, 2012 and November 4, 2013, Hudbay entered into precious metals stream transactions with Wheaton whereby Hudbay has received aggregate deposit payments of $455,100 against delivery of (i) 100% of payable gold and silver from the 777 mine until the end of 2016, and delivery of 50% of payable gold and 100% of payable silver for the remainder of the 777 mine life; and aggregate deposit payments of $429,900 against the delivery of (ii) 100% of payable silver and 50% of payable gold from Peru's production. In addition to the aggregate deposit payments of $885,000, as gold and silver is delivered under the stream agreements, Hudbay receives cash payments equal to the lesser of (i) the market price and (ii) $400 per ounce (for gold) and $5.90 per ounce (for silver), subject to 1% annual escalation after three years, from the inception of the agreement. Hudbay recorded the deposits received as deferred revenue and recognizes amounts in revenue as gold and silver are delivered under the stream agreements. Hudbay determines the amortization of deferred revenue to the consolidated income statements on a per unit basis using the estimated total number of gold and silver ounces expected to be delivered under the stream agreements over the life of the 777 and Constancia/Pampacancha life-of-mine plans. Hudbay estimates the current portion of deferred revenue based on deliveries anticipated over the next twelve months. Hudbay has determined that precious metals stream contracts are subject to variable consideration and contain a significant financing component. As such, the Company recognizes a financing charge at each reporting period and will gross up the deferred revenue balance to recognize the significant financing element that is part of these contracts. Hudbay's streaming arrangements are secured against the mining properties and other business unit assets associated with the applicable stream. 777 Stream Agreement For the year ended December 31, 2021, the drawdown rates for the 777 stream agreement for gold and silver were CA$1,578 and CA$30.38 per ounce, respectively (year ended December 31, 2020 - CA$1,589 and CA$30.63 per ounce, respectively). As part of the streaming agreement for the 777 mine, Hudbay must repay, with precious metals credits, the stream deposit by August 1, 2052, the expiry date of the agreement. If the stream deposit is not fully repaid with precious metals credits from 777 production by the expiry date, a payment for the remaining amount will be due at the expiry date of the agreement. Given the remaining mine life is less than 12 months, Hudbay estimates that a portion of the stream deposit will not be repaid by means of precious metals credits from 777 production. As at December 31, 2021, the estimated repayment amount was reclassified to a refund liability (note 14), which is and will be discounted at the 9.0% rate inherent in the original 777 stream agreement and accreted over the remaining term of the agreement. Peru Stream Agreement During the second quarter of 2021, an amendment to the Peru gold stream was signed with Wheaton. The amendment eliminates the requirement to deliver 8,020 ounces of gold to Wheaton for not mining four million tonnes of ore from the Pampacancha deposit by June 30, 2021. In consideration for the elimination of this delivery obligation, Hudbay has agreed to increase the fixed gold recoveries that apply to Constancia ore production from 55% to 70% until December 31, 2025, which matches the fixed recovery rate that applies to Pampacancha production. In addition, Wheaton agreed that if Hudbay mined and processed four million tonnes of ore from the Pampacancha deposit by December 31, 2021, it would make an additional deposit payment of $4,000. As such, Hudbay revised its estimate of the remaining number of gold ounces expected to be delivered under the Peru streaming arrangement. Based on the nature of the amendment to the streaming agreement, it was determined that this contract modification should be treated as a termination of the existing contract and creation of a new contract. The accounting for such a modification is fully prospective. As a result of the contract modification, the transaction price has been redetermined and the discount rate used to compute the significant financing component has been reassessed as of May 1, 2021. Under IFRS 15, the significant financing component is recognized as a financing charge at each reporting period and grosses up the deferred revenue balance to recognize the significant financing element that is inherent in the contract. Discount rates are significantly lower than compared to when the original contract was initiated which has resulted in lower amortized revenues and lower interest accretion expense from the date of modification. Effective May 1, 2021, the drawdown rate for the Peru stream agreement for gold was $762 per ounce and prior to May 1, 2021 the drawdown rate for gold was $990 per ounce (year ended December 31, 2020 - $976 per ounce). Effective May 1, 2021 the drawdown rate for the Peru stream agreement for silver was $15.64 per ounce and prior to May 1, 2021 the drawdown rate for silver was $21.86 per ounce (year ended December 31, 2020 - $21.52 per ounce). As at December 31, 2021 Hudbay had mined and processed four million tonnes of ore from the Pampacancha deposit and, as such, Hudbay received an additional deposit payment of $4,000 in the fourth quarter of 2021. The following table summarizes changes in deferred revenue: Balance, January 1, 2020 $ 563,756 Amortization of deferred revenue Liability drawdown (67,263 ) Variable consideration adjustments - prior periods (6,668 ) Accretion on streaming arrangements Current year additions 60,362 Variable consideration adjustments - prior periods (3,692 ) Effects of changes in foreign exchange 189 Balance, December 31, 2020 $ 546,684 Amortization of deferred revenue Liability drawdown (71,519 ) Variable consideration adjustments - prior periods (1,617 ) Accretion on streaming arrangements (note 5g) Current year-to-date additions 42,060 Variable consideration adjustments - prior periods 594 Reclass of refund liability (note 14) (5,424 ) Stream deposit 4,000 Effects of changes in foreign exchange 548 Balance, December 31, 2021 $ 515,326 Consideration from the Company's stream agreement is considered variable. Gold and silver stream revenue can be subject to cumulative adjustments when the number of ounces to be delivered under the contract changes. As a result of changes in the Company's mineral reserve and resource estimate in the first quarter of 2021, the amortization rate by which deferred revenue is drawn down into income was adjusted and, as required, a current period catch up adjustment is made for all prior period stream revenues since the stream agreement inception date. This variable consideration adjustment resulted in an increase in revenue of $1,617 and an increase of finance expense of $594 for the year ended December 31, 2021. During the year ended December 31, 2020, the Company recognized an adjustment to gold and silver revenue and finance costs due to a net increase in the Company's mineral reserve and resources estimates coupled with a change to the 777 mine plan. This variable consideration adjustment resulted in an increase in revenue of $6,668 and reversal of finance expense of $3,692 for the year ended December 31, 2020. Deferred revenue is reflected in the consolidated balance sheets as follows: Dec. 31, 2021 Dec. 31, 2020 Current $ 88,963 $ 102,782 Non-current 426,363 443,902 $ 515,326 $ 546,684

Environmental and other provisi

Environmental and other provisions	12 Months Ended
	Dec. 31, 2021
Disclosure of other provisions [abstract]
Environmental and other provisions [Text Block]	18. Decommis-sioning, restoration and similar liabilities Deferred share units (note 23a) Restricted share units 1 (note 23a) Performan-ce share units (note 23a) Other 2 Total Balance, January 1, 2021 $ 343,132 $ 8,719 $ 10,449 $ 2,030 $ 1,144 $ 365,474 Net additional provisions made 172,023 1,233 5,523 2,993 9,182 190,954 Disbursements (21,663 ) (2,053 ) (6,143 ) - (5 ) (29,864 ) Unwinding of discount (note 5g) 4,988 - - - - 4,988 Effect of change in estimate to 3 (23,173 ) - - - - (23,173 ) Effect of change in discount rate (9,982 ) - - - - (9,982 ) Effect of foreign exchange 2,475 (18 ) 316 (10 ) (1 ) 2,762 Effect of change in share price - 226 744 389 - 1,359 Balance, December 31, 2021 $ 467,800 $ 8,107 $ 10,889 $ 5,402 $ 10,320 $ 502,518 1 2 3 Provisions are reflected in the consolidated balance sheets as follows: December 31, 2021 Decommis-sioning, restoration and similar liabilities Deferred share units (note 23a) Restricted share units 1 (note 23a) Performan-ce share units (note 23a) Other Total Current (note 13) $ 16,759 $ 8,107 $ 5,061 $ 4,622 $ 6,468 $ 41,017 Non-current 451,041 - 5,828 780 3,852 461,501 $ 467,800 $ 8,107 $ 10,889 $ 5,402 $ 10,320 $ 502,518 Decommis-sioning, restoration and similar liabilities Deferred share units (note 23a) Restricted share units 1 Performan-ce share units (note 23a) Other Total Balance, January 1, 2020 $ 302,116 $ 3,876 $ 5,477 $ - $ 2,956 $ 314,425 Net additional provisions made 5,868 1,628 3,642 1,257 15 12,410 Disbursements (18,737 ) (497 ) (2,646 ) - (1,824 ) (23,704 ) Unwinding of discount (note 5g) 3,543 - - - - 3,543 Effect of change in discount rate 43,180 - - - - 43,180 Effect of foreign exchange 7,162 191 116 43 (3 ) 7,509 Effect of change in share price - 3,521 3,860 730 - 8,111 Balance, December 31, 2020 $ 343,132 $ 8,719 $ 10,449 $ 2,030 $ 1,144 $ 365,474 1 December 31, 2020 Decommis-sioning, restoration and similar liabilities Deferred share units (note 23a) Restricted share units 1 Performan-ce share units (note 23a) Other Total Current (note 13) $ 20,308 $ 8,719 $ 4,648 $ - $ - $ 33,675 Non-current 322,824 - 5,801 2,030 1,144 331,799 $ 343,132 $ 8,719 $ 10,449 $ 2,030 $ 1,144 $ 365,474 Decommissioning, restoration and similar liabilities are remeasured at each reporting date to reflect changes in discount rates, which can significantly affect the liabilities. Decommissioning, restoration and similar liabilities ("DRO") Hudbay's decommissioning, restoration and similar liabilities relate to the rehabilitation and closure of currently operating mines and metallurgical plants, development-phase properties and closed properties. The amount of the provision has been recorded based on estimates and assumptions that management believes are reasonable; however, actual decommissioning and restoration costs may differ from expectations. DRO are remeasured at each reporting date to reflect changes in discount rates, exchange rates, and timing and extent of cash outflows which can significantly affect the liabilities. The amount of this provision has been recorded based on estimates and assumptions that management believes are reasonable; however, actual decommissioning and restoration costs may differ from expectations. During the third quarter of 2021, following a comprehensive update to the Flin Flon closure plan, additional provisions were recognized to reflect higher estimates for closure activities in Flin Flon through to the year 2122. The increase in the environmental obligation resulted in a corresponding increase in the Flin Flon PP&E. However, as the closure of Flin Flon is expected to commence within 12 months, an impairment indicator was identified in the third and fourth quarter of 2021 which led to an impairment loss of $193,473 for the year ended December 31, 2021 (note 5h). During the year ended December 31, 2021, additional provisions were recognized mostly as a result of the aforementioned impact in Flin Flon and changes to discount rates. Hudbay's decommissioning and restoration liabilities relate mainly to its Manitoba operations. Management anticipates that most of the assets in Flin Flon will be placed on care and maintenance once mining activities are completed at the 777 mine in order to maintain optionality for restart should a new mine be found in the Flin Flon area. The majority of closure activities will occur once all mining activities in Manitoba are completed. These provisions also reflect estimated post-closure cash flows that extend to the year 2122 for ongoing monitoring and water treatment requirements. Management anticipates most decommissioning and restoration activities for the Constancia operation will occur from 2035 to 2070, which include ongoing monitoring and water treatment requirements. These estimates have been discounted to their present value at rates ra nging from 0.39% to 1.94% p

Pension obligations

Pension obligations	12 Months Ended
	Dec. 31, 2021
Pension Obligations [Abstract]
Pension obligations [Text Block]	19. Pension obligations Hudbay maintains non-contributory and contributory defined benefit pension plans for certain of its employees. The Company uses a December 31 measurement date for all of its plans. For Hudbay's significant plans, the most recent actuarial valuations filed for funding purposes were performed during 2021 using data as at December 31, 2020. For these plans, the next actuarial valuation required for funding purposes will be performed during 2022 using data as of December 31, 2021. Movements in the present value of the defined benefit obligation in the current and previous years were as follows: Year ended Dec. 31, 2021 Dec. 31, 2020 Opening defined benefit obligation: $ 240,354 $ 243,733 Current service costs 11,295 11,044 Past service cost (note 5e) 4,989 - Interest cost 6,172 6,569 Benefits paid from plan (22,546 ) (35,384 ) Benefits paid from employer (866 ) (1,317 ) Participant contributions 34 48 Effects of movements in exchange rates 950 2,780 Remeasurement actuarial losses/(gains): Arising from changes in demographic assumptions 1,498 (1,461 ) Arising from changes in financial assumptions (24,663 ) 16,967 Arising from experience adjustments (848 ) (2,625 ) Closing defined benefit obligation $ 216,369 $ 240,354 The defined benefit obligation closing balance, by member group, is as follows: Dec. 31, 2021 Dec. 31, 2020 Active members $ 176,644 $ 211,861 Deferred members 2,538 2,198 Retired members 37,187 26,295 Closing defined benefit obligation $ 216,369 $ 240,354 Movements in the fair value of the pension plan assets in the current and previous years were as follows: Year ended Dec. 31, 2021 Dec. 31, 2020 Opening fair value of plan assets: $ 203,486 $ 202,119 Interest income 5,387 5,695 Remeasurement adjustment: (Loss) return on plan assets (excluding amounts included in net interest expense) (306 ) 15,377 Contributions from the employer 12,750 12,987 Employer direct benefit payments 866 1,317 Contributions from plan participants 34 48 Benefit payment from employer (866 ) (1,317 ) Administrative expenses paid from plan assets (83 ) (77 ) Benefits paid (22,546 ) (35,384 ) Effects of changes in foreign exchange rates 923 2,721 Closing fair value of plan assets $ 199,645 $ 203,486 The amount included in the consolidated balance sheets arising from the entity's obligation in respect of its defined benefit plans is as follows: Dec. 31, 2021 Dec. 31, 2020 Present value of funded defined benefit obligation $ 197,546 $ 220,210 Fair value of plan assets (199,645 ) (203,486 ) Present value of unfunded defined benefit obligation 18,823 20,144 Net liability arising from defined benefit obligation $ 16,724 $ 36,868 Reflected in the consolidated balance sheets as follows: Dec. 31, 2021 Dec. 31, 2020 Pension obligation - current (note 13) $ 10,472 $ 13,552 Pension obligation - non-current 6,252 23,316 Total pension obligation $ 16,724 $ 36,868 Pension expense is as follows: Dec. 31, 2021 Dec. 31, 2020 Service costs: Current service cost $ 11,295 $ 11,044 Past service cost 4,989 - Total service cost 16,284 11,044 Net interest expense 785 874 Administration cost 83 77 Defined benefit pension expense $ 17,152 $ 11,995 Defined contribution pension expense $ 2,061 $ 1,791 Remeasurement on the net defined benefit liability: Dec. 31, 2021 Dec. 31, 2020 Loss (return) on plan assets (excluding amounts included in net interest expense) $ 306 $ (15,377 ) Actuarial losses (gains) arising from changes in demographic assumptions 1,498 (1,461 ) Actuarial (gains) losses arising from changes in financial assumptions (24,663 ) 16,967 Actuarial gains arising from experience adjustments (848 ) (2,625 ) Defined benefit gain related to remeasurement $ (23,707 ) $ (2,496 ) Total pension cost $ (4,494 ) $ 11,290 Pension amounts recognized include those directly related to production of inventory; such amounts are recognized initially as costs of inventory and are expensed in the consolidated income statements within cost of sales upon sale of the inventory. The current service cost, the interest cost and administration cost for the year are included in the employee benefits expense. The remeasurement of the net defined benefit liability is included in OCI. The defined benefit pension plans typically expose Hudbay to actuarial risks such as: investment risk, interest rate risk, longevity risk and salary risk. Investment risk The present value of the liabilities for the defined benefit plans is calculated using a discount rate determined by reference to high quality corporate bond yields; if the return on plan assets is below this rate, it will create a plan deficit. Hudbay's primary quantitative investment objectives are maximization of the long term real rate of return, subject to an acceptable degree of investment risk and preservation of principal. Risk tolerance is established through consideration of several factors including past performance, current market condition and the funded status of the plan. Interest risk A decrease in the bond interest rate will increase the pension plan liabilities; however, this will be partially offset by an increase in the return on the plan's debt investments. Longevity risk The present value of the defined benefit plans liabilities is calculated by reference to the best estimate of the mortality of plan participants both during and after their employment. An increase in the life expectancy of the plan participants will increase the pension plans liabilities. Salary risk The present value of the defined benefit plans liabilities for some of the pension plans is calculated by reference to the future salaries of plan participants. As such, an increase in the salary of the plan participants will increase the plans' liabilities. The principal assumptions used for the purposes of the actuarial valuations were as follows: 2021 2020 Defined benefit cost: Discount rate - benefit obligations 2.54 % 3.08% Discount rate - service cost 2.66 % 3.10% Expected rate of salary increase 1 2.75 % 2.75% Average longevity at retirement age for current pensioners (years) 2 Males 20.3 20.3 Females 23.7 23.7 Defined benefit obligation: Discount rate 3.09 % 2.54% Expected rate of salary increase 1 2.75 % 2.75% Average longevity at retirement age for current pensioners (years) 2 Males 20.4 20.3 Females 23.7 23.7 Average longevity at retirement age for current employees (future pensioners) (years) 2 Males 22.2 22.2 Females 25.4 25.4 1 2 Hudbay reviews the assumptions used to measure pension costs (including the discount rate) on an annual basis. Economic and market conditions at the measurement date affect these assumptions from year to year. In determining the discount rate, Hudbay considers the duration of the pension plan liabilities. Significant actuarial assumptions for the determination of the defined benefit obligation are discount rate, expected salary increase and mortality. The sensitivity analysis below has been determined based on reasonably possible changes of the respective assumptions occurring at the end of the reporting periods, while holding other assumptions constant: - - - The sensitivity analysis presented above may not be representative of the actual change in the defined benefit obligation as it is unlikely that the change in assumptions would occur in isolation of one another as some of the assumptions may be correlated. Furthermore, in presenting the above sensitivity analysis, the present value of the defined benefit obligation has been calculated using the projected unit credit method at the end of the reporting period, which is the same as that applied in calculating the defined benefit obligation liability recognized in the consolidated balance sheets. The Company's main pension plans are registered federally with the Office of the Superintendent of Financial Institution and with the Canada Revenue Agency. The registered pension plans are governed in accordance with the Pension Benefits Standards Act and the Income Tax Act. The sponsor contributes the amount needed to maintain adequate funding as dictated by the prevailing regulations. Expected employer contribution to the pension plans for the fiscal year ending December 31, 2021 is $12,477. The average duration of the pension obligation at December 31, 2021 is 19.2 years (2020 - 21.2 years). This number can be broken down as follows: - - - Asset-Liability-Matching studies are performed periodically to analyze the investment policies in terms of risk and-return profiles. The pension plans do not invest directly in either securities or property/real estate of the Company. With the exception of fixed income investments and certain equity instruments, the plan assets are actively managed by investment managers, with the goal of attaining returns that potentially outperform passively managed investments. Within appropriate limits, the actual composition of the invested funds may vary from the prescribed investment mix. The following is a summary of the fair value classification levels for investment: December 31, 2021 Level 1 Level 2 Level 3 Total Investments: Money market instruments $ 2,045 $ - $ - $ 2,045 Pooled equity funds 78,092 - - 78,092 Pooled fixed income funds - 97,229 - 97,229 Alternative investment funds - 21,983 - 21,983 Balanced funds - 296 - 296 $ 80,137 $ 119,508 $ - $ 199,645 December 31, 2020 Level 1 Level 2 Level 3 Total Investments: Money market instruments $ 4,766 $ - $ - $ 4,766 Pooled equity funds 68,926 - - 68,926 Pooled fixed income funds - 98,922 - 98,922 Alternative investment funds - 30,323 - 30,323 Balanced funds - 549 - 549 $ 73,692 $ 129,794 $ - $ 203,486

Other employee benefits

Other employee benefits	12 Months Ended
	Dec. 31, 2021
Other Employee Benefits [Abstract]
Other employee benefits [Text Block]	20. Other employee benefits Hudbay sponsors both other long-term employee benefit plans and non-pension post-employment benefits plans and uses a December 31 measurement date. These obligations relate mainly to commitments for post-retirement health benefits. Information about Hudbay's post-employment and other long-term employee benefits is as follows: Movements in the present value of the defined benefit obligation in the current and previous years were: Year ended Dec. 31, 2021 Dec. 31, 2020 Opening defined benefit obligation $ 129,616 $ 116,696 Current service cost 1 3,861 4,140 Past service cost 134 - Interest cost 3,531 3,478 Effects of movements in exchange rates 639 2,423 Remeasurement actuarial losses/(gains): Arising from changes in demographic assumptions 2,601 (4,460 ) Arising from changes in financial assumptions (7,309 ) 10,043 Arising from experience adjustments (1,034 ) (489 ) Benefits paid (3,196 ) (2,215 ) Closing defined benefit obligation $ 128,843 $ 129,616 1 The defined benefit obligation closing balance, by group member, is as follows: Dec. 31, 2021 Dec. 31, 2020 Active members $ 57,775 $ 68,983 Inactive members 71,068 60,633 Closing defined benefit obligation $ 128,843 $ 129,616 Movements in the fair value of defined benefit amounts in the current and previous years were as follows: Dec. 31, 2021 Dec. 31, 2020 Employer contributions $ 3,196 $ 2,215 Benefits paid (3,196 ) (2,215 ) Closing fair value of assets $ - $ - The non-pension employee benefit plan obligations are unfunded. Reconciliation of assets and liabilities recognized in the consolidated balance sheets: Dec. 31, 2021 Dec. 31, 2020 Unfunded benefit obligation $ 128,843 $ 129,616 Vacation accrual and other - non-current 3,275 3,046 Net liability $ 132,118 $ 132,662 Reflected in the consolidated balance sheets as follows: Dec. 31, 2021 Dec. 31, 2020 Other employee benefits liability - current (note 13) $ 3,530 $ 3,154 Other employee benefits liability - non-current 128,588 129,508 Net liability $ 132,118 $ 132,662 Other employee future benefit expense includes the following: Dec. 31, 2021 Dec. 31, 2020 Current service cost 1 $ 3,995 $ 4,140 Net interest cost 3,531 3,478 Components recognized in consolidated income statements $ 7,526 $ 7,618 1 Dec. 31, 2021 Dec. 31, 2020 Remeasurement on the net defined benefit liability: Actuarial losses/(gains) arising from changes in demographic assumptions $ 2,601 $ (4,460 ) Actuarial (gains)/losses arising from changes in financial assumptions (7,309 ) 10,043 Actuarial gains arising from changes experience adjustments (1,034 ) (489 ) Components recognized in statements of comprehensive income $ (5,742 ) $ 5,094 Total other employee future benefit cost $ 1,784 $ 12,712 Other employee benefit amounts recognized include those directly related to production of inventory; such amounts are recognized initially as costs of inventory and are expensed in the consolidated income statements within cost of sales upon sale of the inventory. Dec. 31, 2021 Dec. 31, 2020 Defined benefit cost: Discount rate 2.76 % 3.17% Initial weighted average health care trend rate 5.66 % 5.68% Ultimate weighted average health care trend rate 4.00 % 4.00% Average longevity at retirement age for current pensioners (years) 1 Males 20.3 21.2 Females 23.7 23.9 Dec. 31, 2021 Dec. 31, 2020 Defined benefit obligation: Discount rate 3.30 % 2.76% Initial weighted average health care trend rate 6.00 % 5.66% Ultimate weighted average health care trend rate 4.00 % 4.00% Average longevity at retirement age for current pensioners (years) 1 Males 20.4 20.3 Females 23.7 23.7 Average longevity at retirement age for current employees (future pensioners) (years) 1 Males 22.3 22.2 Females 25.4 25.4 1 Hudbay reviews the assumptions used to measure other employee benefit costs (including the discount rate) on an annual basis. The other employee benefit costs typically expose Hudbay to actuarial risks such as: interest rate risk, health care cost inflation risk and longevity risk. Interest risk A decrease in the bond interest rate will increase the plan liabilities. Health care cost inflation risk The majority of the plan's benefit obligations are linked to health care cost inflation and higher inflation will lead to higher liabilities. Longevity risk The majority of the plans' benefit liability is calculated by reference to the best estimate of the mortality of plan participants both during and after their employment. An increase in the life expectancy of the plan participants will increase the plans liabilities. This is particularly significant for benefits subject to health care cost inflation where increases in inflation result in higher sensitivity to changes in life expectancy. The sensitivity analyses below have been determined based on reasonably possible changes of the respective assumptions occurring at the end of the reporting period, while holding other assumptions constant: - - - The average duration of the non-pension post-employment obligation at December 31, 2021 is 18.6 years (2020: 19.4 years). This number can be broken down as follows: - -

Income and mining taxes

Income and mining taxes	12 Months Ended
	Dec. 31, 2021
Major components of tax expense (income) [abstract]
Income and mining taxes [Text Block]	21. Income and mining taxes (a) Tax recoveries: The tax expense (recoveries) is applicable as follows: Year ended 2021 2020 Current: Income taxes $ 25,570 $ 4,458 Mining taxes 20,830 4,671 Adjustments in respect of prior years - (398 ) 46,400 8,731 Deferred: Income tax recoveries - origination, revaluation and/or reversal of temporary differences (17,772 ) (39,411 ) Mining tax expense (recoveries) - origination, revaluation and/or reversal of temporary difference 4,235 (3,331 ) Adjustments in respect of prior years 8,744 (494 ) (4,793 ) (43,236 ) $ 41,607 $ (34,505 ) Adjustments in respect of prior years refers to amounts changing due to the filing of tax returns and assessments from government authorities as well as any change identified that would result in a difference to our current or deferred tax balances as reported in the prior fiscal year end. (b) Deferred tax assets and liabilities as represented on the consolidated balance sheets: Dec. 31, 2021 Dec. 31, 2020 Deferred income tax asset $ 133,584 $ 94,070 Deferred mining tax asset - 7,829 133,584 101,899 Deferred income tax liability (249,638 ) (220,568 ) Deferred mining tax liability (12,126 ) (8,865 ) (261,764 ) (229,433 ) Net deferred tax liability balance, end of year $ (128,180 ) $ (127,534 ) (c) Changes in deferred tax assets and liabilities: Year ended Year ended Net deferred tax liability balance, beginning of year $ (127,534 ) $ (167,882 ) Deferred tax expense 4,793 43,236 OCI transactions (5,474 ) (759 ) Foreign currency translation on the deferred tax liability 35 (2,129 ) Net deferred tax liability balance, end of year $ (128,180 ) $ (127,534 ) (d) Reconciliation to statutory tax rate: As a result of its mining operations, the Company is subject to both income and mining taxes. Generally, most expenditures incurred are deductible in computing income tax, whereas mining tax legislation, although based on a measure of profitability from carrying on mining operations, is more restrictive in respect of the deductions permitted in computing income subject to mining tax. These restrictions include costs unrelated to mining operations as well as deductions for financing expenses, such as interest and royalties. In addition, income unrelated to carrying on mining operations is not subject to mining tax. A reconciliation between tax expense and the product of accounting profit multiplied by the Company's statutory income tax rate for the years ended December 31, 2021 and 2020 is as follows: Year ended December 31, 2021 2020 Statutory tax rate 26.4% 26.3% Tax recovery at statutory rate $ (53,526 ) $ (47,047 ) Effect of: Deductions related to mining taxes (5,491 ) (1,369 ) Adjusted income taxes (59,017 ) (48,416 ) Mining tax expense 32,034 1,291 (26,983 ) (47,125 ) Permanent differences related to: Capital items 716 (160 ) Other income tax permanent differences 2,775 (1,165 ) Impact of remeasurement on decommissioning liability 33,731 7,094 Temporary income tax differences not recognized 4,483 1,100 Impact related to differences in tax rates in foreign operations 21,201 5,534 Impact of changes to statutory tax rates (706 ) 2,412 Foreign exchange on non-monetary items 4,593 (3,628 ) Impact related to tax assessments and tax return amendments 1,797 1,433 Tax expense (recovery) $ 41,607 $ (34,505 ) (e) Income tax effect of temporary differences - recognized: The tax effects of temporary differences that give rise to significant portions of the deferred tax assets and deferred tax liabilities at December 31, 2021 and 2020 are as follows: Balance sheet Dec. 31, 2021 Dec. 31, Deferred income tax (liability) asset Property, plant and equipment $ (40,491 ) $ (88,368 ) Pension obligation 4,369 9,467 Other employee benefits 27,191 25,687 Decommissioning and restoration obligation 29,870 37,902 Non-capital losses 93,892 110,374 Share issuance and debt cost 17,984 8,972 Embedded derivative (prepayment option) - (13,137 ) Deferred revenue 1,661 (809 ) Other (892 ) 3,982 Deferred income tax asset 133,584 94,070 Deferred income tax liability (asset) Property, plant and equipment 322,325 292,858 Other employee benefits (654 ) 203 Asset retirement obligations (9,609 ) (1,588 ) Non-capital losses (58,777 ) (78,607 ) Other (3,647 ) 7,702 Deferred income tax liability 249,638 220,568 Deferred income tax liability $ (116,054 ) $ (126,498 ) The above reconciling items are disclosed at the tax rates that apply in the jurisdiction where they have arisen. (f) The Company has not recognized a deferred tax asset on $23.5 million of non-capital losses (December 31, 2020 - $115.9 million), $170.8 million of capital losses (December 31, 2020 - $166.2 million) and $586.8 million (December 31, 2020 - $291.9 million) of other deductible temporary differences since the realization of any related tax benefit through future taxable profits is not probable. The capital losses have no expiry dates and the other deductible temporary differences do not expire under current tax legislation. The Canadian non-capital losses were incurred between 2006 and 2021 and have a twenty-year carry forward period. The United States net operating losses were incurred between 2004 and 2021 and have a twenty-year carry forward period. Peruvian net operating losses were incurred in 2021 and may be carried forward and set off against 50% of future profits without any time restrictions. (g) The tax effects of temporary differences that give rise to significant portions of the deferred mining tax assets and liabilities at December 31, 2021 and 2020 are as follows: Canada Dec. 31, 2021 Dec. 31, 2020 Property, plant and equipment $ (278 ) $ 7,829 Peru Dec. 31, 2021 Dec. 31, 2020 Property, plant and equipment $ (11,848 ) $ (8,865 ) For the year ended December 31, 2021, Hudbay had unrecognized deferred mining tax assets of approximately $18,159 (December 31, 2020 - $7,544). (h) There are no taxable temporary differences associated with investments in subsidiaries, associates and joint ventures, for which a deferred tax liability has not been recognized. (i) The timing of payments results in significant variances in period-to-period comparisons of the tax receivable and tax payable balances. (j) The tax rules and regulations applicable to mining companies are highly complex and subject to interpretation. The Company may be subject in the future to a review of its historic income and other tax filings and, in connection with such reviews, disputes can arise with tax authorities over the interpretation or application of certain tax rules and regulations in respect of the Company's business. These reviews may alter the timing or amount of taxable income or deductions. The amount ultimately reassessed upon resolution of issues raised may differ from the amount accrued.

Share capital

Share capital	12 Months Ended
	Dec. 31, 2021
Disclosure of classes of share capital [abstract]
Share capital [Text Block]	22. Share capital (a) Preference shares: Authorized: Unlimited preference shares without par value. Issued and fully paid: Nil. (b) Common shares: Authorized: Unlimited common shares without par value. Issued and fully paid: Year ended December 31, 2021 Year ended Common shares Amount Common shares Amount Balance, beginning of year 261,272,151 $ 1,777,340 261,272,151 $ 1,777,340 Exercise of options 326,161 1,508 — — Balance, end of year 261,598,312 $ 1,778,848 261,272,151 $ 1,777,340 During the year ended December 31, 2021, the Company declared two semi-annual dividends of C$0.01 per share each. The Comp any paid $2,090 and $2,056 in dividends on March 26, 2021 and September 24, 2021 to shareholders of record as of March 9, 2021 and September 3, 2021. During the year ended December 31, 2020, the Company paid $1,804 and $1,979

Share-based compensation

Share-based compensation	12 Months Ended
	Dec. 31, 2021
Disclosure of terms and conditions of share-based payment arrangement [abstract]
Share-based compensation [Text Block]	23. Share-based compensation (a) Hudbay has three cash-settled share-based compensation plans, as described below. Deferred Share Units (DSU) At December 31, 2021, the carrying amount and the intrinsic value of the outstanding liability related to the DSU plan was $8,107 (December 31, 2020 - $8,719) (note 18). The following table outlines information related to DSUs granted, expenses recognized and payments made during the year. Year ended Dec. 31, 2021 Dec. 31, 2020 Granted during the year: Number of units 173,929 465,889 Weighted average price (C$/unit) $ 8.85 $ 4.10 Expenses recognized during the year 1 $ 1,459 $ 5,149 Payments made during the year (note 18) $ 2,053 $ 497 1 Restricted Share Units (RSU) RSUs At December 31, 2021, the carrying amount of the outstanding liability related to the RSU plan was $10,889 (December 31, 2020 - $10,449) (note 18). The following table outlines information related to RSUs granted, expenses Year ended Dec. 31, 2021 Dec. 31, 2020 Number of units, beginning of year 2,940,337 2,223,999 Number of units granted during the year 515,727 1,388,786 Credits for dividends 6,949 17,587 Number of units forfeited during the year (133,804 ) (44,678 ) Number of units vested (844,349 ) (645,357 ) Number of units, end of year 1 2,484,860 2,940,337 Weighted average price - granted (C$/unit) $ 10.42 $ 3.98 Expenses recognized during the year 2 $ 5,385 $ 6,750 Payments made during the year (note 18) $ 6,143 $ 2,646 1 2 Performance Share Units (PSU) PSUs granted under the LTEP Plan may be settled in the form of Hudbay common shares or, at the option of the Company, the cash equivalent based on the market price of the common shares as of the vesting date. Hudbay has historically settled similar share-based compensation units in cash. The Company has determined that the appropriate accounting treatment is to classify the PSUs as cash settled transactions. The PSUs contain a performance based multiplier element which will be computed upon vesting. At December 31, 2021, the carrying amount of the outstanding liability related to PSU plan was $5,402 (December 31, 2020 - $2,030) (note 18). The following table outlines information related to PSUs granted, expenses recognized Year ended Dec. 31, 2021 Dec. 31, 2020 Number of units, beginning of year 1,095,615 - Number of units granted during the year 406,656 1,089,569 Credits for dividends 3,960 6,046 Number of units, end of year 1,506,231 1,095,615 Weighted average price - granted (C$/unit) $ 10.42 $ 3.97 Expenses recognized during the year (note 5d) $ 3,382 $ 1,987 Payments made during the year (note 18) $ - $ - (b) Equity-settled share-based compensation - stock options: The Company's stock option plan was approved in June 2005 and amended in May 2008 (the "Plan"). Under the amended Plan, the Company may grant to employees, officers, directors or consultants of the Company or its affiliates options to purchase up to a maximum of 13 million common shares of Hudbay. The Company has determined that the appropriate accounting treatment is to classify the stock options as equity settled transactions. During the year ended December 31, 2021, the Company granted 509,385 stock options (year ended December 31, 2020 - 1,581,385). The following table outlines the changes in the number of stock options outstanding: Year ended Year ended Dec. 31, 2021 Dec. 31, 2020 Number of shares subject to option Weighted-average exercise price C$ Number of shares subject to option Weighted average exercise price C$ Balance, beginning of year 1,563,189 $ 3.77 - Number of units granted during the year 509,385 $ 10.42 1,581,385 $ 3.77 Exercised (326,161 ) $ 3.76 - $ - Forfeited (87,125 ) $ 5.79 (18,196 ) $ 3.76 Balance, end of year 1,659,288 $ 5.71 1,563,189 $ 3.77 The following table presents the weighted average fair value assumptions used in the Black-Scholes valuation of these options: For options granted during the year ended Dec. 31, 2021 Dec. 31, 2020 Weighted average share price at grant date (CAD) $ 10.42 $ 3.77 Risk-free rate 1.02 % 1.14% Expected dividend yield 0.2 % 0.5% Expected stock price volatility (based on historical volatility) 60.5 % 57.0% Expected life of option (months) 84 84 Weighted average per share fair value of stock options granted (CAD) $ 6.06 $ 2.02 The following table outlines stock options outstanding and exercisable: Dec. 31, 2021 Range of Number of Weighted average Weighted Number of Weighted $3.76 - $3.92 1,176,399 5.15 $ 3.78 191,651 $ 3.79 $10.42 - $10.42 482,889 6.15 $ 10.42 - $ - Dec. 31, 2020 Range of Number of Weighted average Weighted Number of Weighted $3.76 - $3.92 1,156,189 6.15 $ 3.77 - $ - Hudbay estimates expected life of options and expected volatility based on historical data, which may differ from actual outcomes.

Earnings per share

Earnings per share	12 Months Ended
	Dec. 31, 2021
Basic earnings per share [abstract]
Earnings per share [Text Block]	24. Earnings per share Year ended Dec. 31, 2021 Dec. 31, 2020 Basic and diluted weighted average common shares outstanding 261,462,323 261,272,151 For periods where Hudbay records a loss, Hudbay calculates diluted loss per share using the basic weighted average number of shares. If the diluted weighted average number of shares were used, the result would be a reduction in the loss, which would be anti-dilutive. The determination of the diluted weighted-average number of common shares excludes the impact of 640,089 weighted-average stock options outstanding that were anti-dilutive for the year ended December 31, 2021 (year ended December 31, 2020 - 1,292,840) as the Company recorded a loss in the financial periods being reported. For the year ended December 31, 2021, Hudbay calculated diluted loss per share using 261,462,323 (for the year ended December 31, 2020 - 261,272,151 common shares).

Capital management

Capital management	12 Months Ended
	Dec. 31, 2021
Statements [Line Items]
Capital management [Text Block]	25. Capital management The Company's definition of capital includes total equity and long-term debt. Hudbay's long-term debt balance as at December 31, 2021 was $1,180,274 (December 31, 2020 - $1,135,675). The Company's objectives when managing capital are to maintain a strong capital base in order to: - Advance Hudbay's corporate strategies to create long-term value for its stakeholders; and, - Sustain Hudbay's operations and growth throughout metals and materials cycles. Hudbay monitors its capital and capital structure on an ongoing basis to ensure they are sufficient to achieve the Company's short-term and long-term strategic objectives in a capital intensive industry. Hudbay faces several risks, including volatile metals prices, access to capital, and risk of delays and cost escalation associated with major capital projects. The Company continually assesses the adequacy of its capital structure to ensure its objectives are met. Hudbay monitors its cash and cash equivalents, which were $270,989 as at December 31, 2021 (2020 - $439,135), together with availability under its committed credit facilities. Hudbay invests its cash and cash equivalents primarily in Canadian bankers' acceptances, deposits at major Canadian and Peruvian banks, or treasury bills issued by the federal or provincial governments. In addition to the requirement to maintain sufficient cash balances to fund continuing operations, Hudbay must maintain sufficient cash to fund the interest expense on the long-term debt outstanding (note 16). As part of the Company's capital management activities, Hudbay monitors interest coverage ratios and leverage ratios.

Financial instruments

Financial instruments	12 Months Ended
	Dec. 31, 2021
Disclosure of detailed information about financial instruments [abstract]
Financial instruments [Text Block]	26. Financial instruments (a) Fair value and carrying value of financial instruments: The following presents the fair value ("FV") and carrying value ("CV") of Hudbay's financial instruments and non-financial derivatives: Dec. 31, 2021 Dec. 31, 2020 FV CV FV CV Financial assets at amortized cost Cash 1 $ 270,989 $ 270,989 $ 439,135 $ 439,135 Restricted cash 1 437 437 337 337 Fair value through profit or loss Trade and other receivables 1, 2, 3 172,890 172,890 114,381 114,381 Non-hedge derivative assets 4 7,430 7,430 2,736 2,736 Investments 5 11,158 11,158 15,669 15,669 Total financial assets $ 462,904 $ 462,904 $ 572,258 $ 572,258 Financial liabilities at amortized cost Trade and other payables 1, 2 189,179 189,179 209,413 209,413 Deferred Rosemont acquisition consideration 8 27,518 27,518 25,961 25,961 Agreements with communities 6 33,947 36,273 41,912 40,787 Wheaton refund liability 10 5,424 5,424 - - Senior unsecured notes 7 1,239,018 1,185,805 1,277,124 1,139,695 Fair value through profit or loss Gold prepayment liability 9 140,008 140,008 137,031 137,031 Non-hedge derivative liabilities 4 12,451 12,451 15,312 15,312 Total financial liabilities $ 1,647,545 $ 1,596,658 $ 1,706,753 $ 1,568,199 1 2 3 4 5 6 7 8 9 10 Fair value hierarchy The table below provides an analysis by valuation method of financial instruments that are measured at fair value subsequent to recognition. Levels 1 to 3 are defined based on the degree to which fair value inputs are observable and have a significant effect on the recorded fair value, as follows: - - - December 31, 2021 Level 1 Level 2 Level 3 Total Financial assets measured at fair value Financial assets at FVTPL: Non-hedge derivatives $ - $ 7,430 $ - $ 7,430 Investments 11,158 - - 11,158 $ 11,158 $ 7,430 $ - $ 18,588 Financial liabilities measured at fair value Financial liabilities at FVTPL: Non-hedge derivatives $ - $ 12,451 $ - $ 12,451 Gold prepayment liability - 140,008 - 140,008 Financial liabilities at amortized cost: Agreements with communities - - 33,947 33,947 Wheaton refund liability - - 5,424 5,424 Senior unsecured notes 1,239,018 - - 1,239,018 $ 1,239,018 $ 152,459 $ 39,371 $ 1,430,848 December 31, 2020 Level 1 Level 2 Level 3 Total Financial assets measured at fair value Financial assets at FVTPL: Non-hedge derivatives $ - $ 2,736 $ - $ 2,736 Investments 15,669 - - 15,669 $ 15,669 $ 2,736 $ - $ 18,405 Financial liabilities measured at fair value Financial liabilities at FVTPL: Non-hedge derivatives $ - $ 15,312 $ - $ 15,312 Gold prepayment liability - 137,031 - 137,031 Financial liabilities at amortized cost: Agreements with communities - - 41,912 41,912 Senior unsecured notes 1,277,124 - - 1,277,124 $ 1,277,124 $ 152,343 $ 41,912 $ 1,471,379 The Company's policy is to recognize transfers into and transfers out of fair value hierarchy levels as of the date of the event or change in circumstances that caused the transfer. During the year ended December 31, 2021 and year ended December 31, 2020, Hudbay did not make any such transfers. The following valuation techniques are used for instruments categorized in Levels 2 and 3: - - - - Reasonable changes to inputs of financial instruments categorized as Level 3 were insignificant. (b) Derivatives and hedging: Copper fixed for floating swaps Hudbay enters into copper fixed for floating swaps in order to manage the risk associated with provisional pricing terms in copper concentrate sales agreements. As at December 31, 2021, Hudbay had 72.8 million pounds of net copper swaps outstanding at an effective average price of $4.34/lb and settling across January to April 2022. As at December 31, 2020, Hudbay had 43.4 million pounds of net copper swaps outstanding at an effective average price of $3.22/lb and settling across January to April 2021. The aggregate fair value of the transactions at December 31, 2021 was a liability of $5,440 (December 31, 2020 - a liability position of $13,198). Transactions involving derivatives are with large multi-national financial institutions that Hudbay believes to be credit worthy. Non-hedge derivative zinc contracts Hudbay enters into future dated fixed price sales contracts with zinc customers and, to ensure that the Company continues to receive a floating or unhedged realized zinc price, Hudbay enters into forward zinc purchase contracts that effectively offset the fixed price sales contracts. At December 31, 2021, Hudbay held contracts for forward zinc purchased of 3.1 million pounds (December 31, 2020 - 3.5 million pounds) that related to forward customer sales of zinc. Prices range from $1.44/lb to $1.52/lb (December 31, 2020 - $0.87/lb to $1.30/lb) and settlement dates extend to June 2022. The aggregate fair value of the transactions at December 31, 2021 was a net asset position of $419 (December 31, 2020 - a net asset position of $622). (c) Provisionally priced receivables Changes in fair value of provisionally priced receivables Hudbay records changes in fair value of provisionally priced receivables related to provisional pricing in concentrate purchase, concentrate sale and certain other sale contracts. Under the terms of these contracts, prices are subject to final adjustment at the end of a future period after title transfers based on quoted market prices during the quotation period specified in the contract. The period between provisional pricing and final pricing is typically up to three months. Changes in fair value of provisionally priced receivables are presented in trade and other receivables when they relate to sales contracts and in trade and other payables when they relate to purchase contracts. At each reporting date, provisionally priced metals are marked-to-market based on the forward market price for the quotation period stipulated in the contract, with changes in fair value recognized in revenue for sales contracts and in inventory or cost of sales for purchase concentrate contracts. Cash flows related to changes in fair value of provisionally priced receivables are classified in operating activities. As at December 31, 2021 and December 31, 2020, Hudbay's net position consisted of contracts awaiting final pricing which are as indicated below: Metal in Sales awaiting final pricing Average YTD price ($/unit) Unit Dec. 31, 2021 Dec. 31, 2020 Dec. 31, 2021 Dec. 31, 2020 Copper pounds (in thousands) 75,681 47,901 4.42 3.52 Gold oz 27,304 18,106 1,828 1,894 Silver oz 125,800 123,380 23.33 26.35 The aggregate fair value of provisionally priced receivables within the copper and zinc concentrate sales contracts at December 31, 2021, was an asset position of $6,500 (d) Embedded derivatives Prepayment option embedded derivative The senior unsecured notes (note 16) may contain prepayment options, which represent embedded derivatives that may require bifurcation from the host contract. When bifurcation is required, the embedded derivatives are measured at fair value, with changes in the fair value being recognized as change in fair value of financial instruments on the consolidated income statements (note ). Neither the 2026 Notes nor the 2029 Notes contain embedded derivatives that require bifurcation from the host contract. The fair value of the embedded derivative at December 31, 2021 was nil (December 31, 2020 - $49,754). (e) Other financial liabilities Gold prepayme nt liability The gold prepayment lia bility (note 14) requires settlement by physical delivery of gold ounces or equivalent gold credit (f) Hudbay's financial risk management activities are governed by Board-approved policies addressing risk identification, hedging authorization procedures and limits and reporting. The Company's policy objective, when hedging activities are undertaken, is to reduce the volatility of future profit and cash flow within the strategic and economic goals of Hudbay. From time to time, the Company employs derivative financial instruments, including forward and option contracts, to manage risk originating from exposures to commodity price risk, foreign exchange risk and interest rate risk. Significant derivative transactions are approved by the Board of Directors, and hedge accounting is applied when certain criteria have been met. Hudbay does not use derivative financial instruments for trading or speculation purposes. The following is a discussion of the Company's risk exposures. (i) Market risk Market risk is the risk that changes in market prices, including foreign exchange rates, commodity prices, share prices, and interest rates will cause fluctuations in the fair value or future cash flows of a financial instrument. Foreign currency risk Hudbay's primary exposure to foreign currency risk arises from: - - The Manitoba segment's primary financial instrument foreign currency exposure is on US denominated cash and cash equivalents, trade and other receivables and other financial liabilities. The Peru segment's primary financial instrument foreign currency exposure is on Peruvian soles cash and cash equivalents, trade and other payables and other financial liabilities. The Company's exposure to foreign currency risk was as follows based on notional financial instrument amounts stated in US equivalent dollars: Dec. 31, 2021 Dec. 31, 2020 CAD 1 USD 2 PEN 3 CAD 1 USD 2 PEN 3 Cash $ 10,627 $ 34,439 $ 6,992 $ 7,791 $ 3,895 $ 4,141 Trade and other receivables 595 71,458 36,470 31 43,316 36,951 Other financial assets 11,158 - - 15,669 - - Trade and other payables (6,347 ) (3,001 ) (17,006 ) (6,104 ) (1,419 ) (34,622 ) Other financial liabilities - - (36,273 ) - - (40,787 ) $ 16,033 $ 102,896 $ (9,817 ) $ 17,387 $ 45,792 $ (34,317 ) 1 2 3 The following sensitivity analysis for foreign currency risk relates solely to financial instruments and non-financial derivatives that were outstanding as at the year-end date; each sensitivity calculation assumes all other variables are held constant. This analysis is based on values as at December 31, 2021 and does not reflect the overall effect that changes in market variables would have on the Company's operating results. December 31, 2021 Change of: Would have changed USD/CAD exchange rate 1 + 10% $ 4.8 million USD/CAD exchange rate 1 - 10% (5.7 ) million USD/PEN exchange rate 2 + 10% 0.6 million USD/PEN exchange rate 2 - 10% (0.7 ) million December 31, 2020 Change of: Would have changed USD/CAD exchange rate 1 + 10% $ 1.1 million USD/CAD exchange rate 1 - 10% (1.4 ) million USD/PEN exchange rate 2 + 10% 2.0 million USD/PEN exchange rate 2 - 10% (2.5 ) million 1 2 Commodity price risk Hudbay is exposed to market risk from prices for the commodities the Company produces and sells, such as copper, zinc, gold and silver. From time to time, Hudbay maintains price protection programs and conducts commodity price risk management through the use of derivative contracts. The following sensitivity analysis for commodity price risk relates solely to financial instruments and non-financial derivatives that were outstanding as at the year-end date; each sensitivity calculation assumes all other variables are held constant. This analysis is based on values as at December 31, 2021 and does not reflect the overall effect that changes in market variables would have on the Company's operating results. December 31, 2021 Change of: Would have changed Copper prices ($/lb) 1 + $0.30 $ 0.5 million Copper prices ($/lb) 1 - $0.30 (0.5 ) million Zinc prices ($/lb) 2 + $0.10 0.2 million Zinc prices ($/lb) 2 - $0.10 (0.2 ) million December 31, 2020 Change of: Would have changed Copper prices ($/lb) 1 + $0.30 $ (1.4 ) million Copper prices ($/lb) 1 - $0.30 1.4 million Zinc prices ($/lb) 2 + $0.10 0.3 million Zinc prices ($/lb) 2 - $0.10 (0.3 ) million 1 2 Share price risk Hudbay is exposed to market risk from share prices of the Company's investments in listed Canadian metals and mining entities. These investments are made to foster strategic relationships, in connection with joint venture agreements and for investment purposes. Management monitors the value of these investments for the purposes of determining whether to add or reduce Hudbay's positions. The following sensitivity analysis of share price risk relates solely to financial instruments that were outstanding as at the year-end date; each sensitivity calculation assumes all other variables are held constant. This analysis is based on values as at December 31, 2021 and does not reflect the overall effect that changes in market variables would have on the Company's finance expenses. December 31, 2021 Change of: Would have changed 2021 Share prices + 25% $ 2.8 million Share prices - 25% (2.8 ) million December 31, 2020 Change of: Would have changed 2020 Share prices + 25% $ 3.9 million Share prices -25% (3.9 ) million Interest rate risk Hudbay is exposed to the following interest rate risks: - - - The only relevant risks at December 31, 2021 is interest rate risk on its cash and cash equivalents. The senior secured revolving credit facilities remain undrawn as at December 31, 2021. Neither the 2026 Notes nor the 2029 Notes contain embedded derivatives that require bifurcation from the host contract. The only material of these risks at December 31, 2020 was the embedded derivative associated with the 2025 Notes. This analysis only quantifies the impact of the embedded derivative on the senior notes and the interest rate risk on cash based on values as at December 31, 2021 and 2020 and does not reflect the overall effect that changes in market variables would have on the Company's finance expenses. December 31, 2021 Change of: Would have changed Interest rates + 2.00% $ 5.4 million Interest rates - 2.00% (5.4 ) million December 31, 2020 Change of: Would have changed Interest rates + 2.00% $ (29.2 ) million Interest rates - 2.00% 39.7 million (ii) Credit risk Credit risk is the risk of financial loss to Hudbay if a customer or counterparty to a financial instrument fails to meet its obligations. The Company's maximum exposure to credit risk at the reporting date is represented by the carrying amount, net of any impairment losses recognized, of financial assets and non-financial derivative assets recorded on the consolidated balance sheets. Refer to note 26a. A large portion of Hudbay's cash are on deposits with major Schedule 1 Canadian banks. Deposits with Schedule 1 Canadian banks represented 76% of total cash as at December 31, 2021 (2020 - 90%). Hudbay's investment policy requires it to comply with a list of approved investments, concentration and maturity limits, as well as credit quality. Credit concentrations in the Company's short-term investments are monitored on an ongoing basis. Transactions involving derivatives are with counterparties Hudbay believes to be creditworthy. Management has a credit policy in place that requires the Company to obtain credit insurance from an investment grade credit insurance provider to mitigate exposure to credit risk in its receivables. At December 31, 2021, approximately 96% of Hudbay's trade receivables were insured or payable by letters of credit (2020 - 95% were insured or payable by letters of credit). Insured receivables have a credit insurance deductible of 10%. The deductible and any additional exposure to credit risk is monitored and approved on an ongoing basis. Two customers accounted for approximately 29% and 23% of total trade receivables as at December 31, 2021 (2020 - two customers accounted for approximately 40% and 16% of total trade receivables). Credit risk for these customers is assessed as medium to low. As at December 31, 2021, none of the Company's trade receivables were aged more than 30 days (2020 - nil). (iii) Liquidity risk Liquidity risk is the risk that the Company will not be able to meet its obligations associated with financial liabilities. Hudbay's objective is to maintain sufficient liquid resources to meet operational and investing requirements. The following summarizes the contractual undiscounted cash flows of the Company's non-derivative and derivative financial liabilities, including any interest payments, by remaining contractual maturity and financial assets used to manage liquidity risk. The table includes all instruments held at the reporting date for which payments had been contractually agreed at the reporting date. The undiscounted amounts shown are gross amounts, unless the liabilities will be settled net. Amounts in foreign currency are translated at the closing rate at the reporting date. When a counterparty has a choice of when an amount is paid, the liability is allocated to the earliest possible time period. Dec. 31, 2021 Carrying Contractual 12 months 13 - 36 37 - 60 More than Assets used to manage liquidity risk Cash $ 270,989 $ 270,989 $ 270,989 $ - $ - $ - Restricted cash 437 437 437 - - - Trade and other receivables 172,890 172,890 172,890 - - - Non-hedge derivative assets 7,430 7,430 7,430 - - - $ 451,746 $ 451,746 $ 451,746 $ - $ - $ - Non-derivative financial liabilities Trade and other payables, including embedded derivatives $ (189,179 ) $ (189,179 ) $ (189,179 ) $ - $ - $ - Agreements with communities 1 (36,273 ) (52,497 ) (9,282 ) (9,719 ) (5,220 ) (28,276 ) Deferred Rosemont acquisition consideration (27,518 ) (30,000 ) (10,000 ) (20,000 ) - - Long-term debt (1,185,805 ) (1,614,686 ) (68,348 ) (136,696 ) (717,767 ) (691,875 ) Gold prepayment obligation 2 (140,008 ) (140,008 ) (71,394 ) (68,614 ) - - Wheaton refund liability (5,424 ) (78,500 ) - - - (78,500 ) $ (1,584,207 ) $ (2,104,870 ) $ (348,203 ) $ (235,029 ) $ (722,987 ) $ (798,651 ) Derivative financial liabilities Non hedge derivative contracts $ (12,451 ) $ (12,451 ) $ (12,451 ) $ - $ - $ - $ (12,451 ) $ (12,451 ) $ (12,451 ) $ - $ - $ - 1 2 Dec. 31, 2020 Carrying Contractual 12 months or 13 - 36 37 - 60 More than 60 Assets used to manage liquidity risk Cash $ 439,135 $ 439,135 $ 439,135 $ - $ - $ - Restricted cash 337 337 337 Trade and other receivables 114,381 114,381 114,381 - - - Non-hedge derivative assets 2,736 2,736 2,736 - - - $ 556,589 $ 556,589 $ 556,589 $ - $ - $ - Non-derivative financial liabilities Trade and other payables, including embedded derivatives $ (209,413 ) $ (209,413 ) $ (209,413 ) $ - $ - $ - Agreements with communities 1 (40,787 ) $ (58,837 ) (12,097 ) (9,483 ) (6,578 ) (30,679 ) Deferred Rosemont acquisition consideration (25,961 ) $ (30,000 ) - (20,000 ) (10,000 ) - Long-term debt, including embedded derivatives (1,139,695 ) $ (1,726,904 ) (87,966 ) (168,188 ) (742,125 ) (728,625 ) Gold prepayment obligation 2 (137,031 ) (137,031 ) - (137,031 ) - - $ (1,552,887 ) $ (2,162,185 ) $ (309,476 ) $ (334,702 ) $ (758,703 ) $ (759,304 ) Derivative financial liabilities Non-hedge derivative contracts $ (15,312 ) $ (15,312 ) $ (15,312 ) $ - $ - $ - $ (15,312 ) $ (15,312 ) $ (15,312 ) $ - $ - $ - 1 2

Commitments and contingencies

Commitments and contingencies	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements [Abstract]
Commitments and contingencies [Text Block]	27. Commitments and contingencies (a) Non capitalized lease commitments Hudbay has entered into various non-capitalized lease commitments for facilities and equipment. The leases expire in periods ranging from one to two years. There are no restrictions placed on the Company by entering into these leases. Future minimum lease payments under such cancellable leases recognized within results from operating activities at December 31 are: 2021 2020 Within one year $ 19,092 $ 58,173 After one year but not more than five years 2,631 2,192 More than five years - - $ 21,723 $ 60,365 (b) As at December 31, 2021, Hudbay had outstanding capital commitments in Canada of approximately $37,476 of which $32,709 can be terminated, approximately $31,918 in Peru, all of which can be terminated, and approximately $180,441 in Arizona, primarily related to the Rosemont project, of which approximately $87,928 can be terminated by Hudbay. (c) Hudbay is involved in various claims, litigation and other matters arising in the ordinary course and conduct of business. While it is not possible to determine the ultimate outcome of such actions at this time, and inherent uncertainties exist in predicting such outcomes, it is Hudbay's belief that the ultimate resolution of such actions is not reasonably likely to have a material adverse effect on its consolidated financial position or results of operations. The assessment of contingencies inherently involves the exercise of significant judgment and estimates of the outcome of future events. As a result of the assessment, no significant contingent liabilities have been recorded in these consolidated financial statements.

Related parties

Related parties	12 Months Ended
	Dec. 31, 2021
Disclosure of transactions between related parties [abstract]
Related parties [Text Block]	28. Related parties (a) Group companies The financial statements include the financial statements of the Company and the following significant subsidiaries: Beneficial Name Jurisdiction Business Entity's Parent 2021 2020 HudBay Marketing & Sales Inc. Canada Marketing and sales HMI 100% 100% HudBay Peru Inc. British Columbia Holding company HMI 100% 100% HudBay Peru S.A.C. Peru Exploration/development Peru Inc. 100% 100% HudBay (BVI) Inc. British Virgin Islands Precious metals sales Peru Inc. 100% 100% Hudbay Arizona Inc. British Columbia Holding company HMI 100% 100% Rosemont Copper Company Arizona Exploration/development HudBay Arizona (US) Holding Corporation 100% 100% Transactions between the Company and its subsidiaries, which are related parties of the Company, have been eliminated on consolidation and are not disclosed in this note. ( b) Compensation of key management personnel The Company's key management includes members of the Board of Directors, Hudbay's Chief Executive Officer, Hudbay's senior vice presidents and vice presidents. Total compensation to key management personnel was as follows: 2021 2020 Short-term employee benefits 1 $ 10,283 $ 7,951 Post-employment benefits 837 639 Long-term share-based awards 6,737 6,381 $ 17,857 $ 14,971 1

Supplementary cash flow informa

Supplementary cash flow information	12 Months Ended
	Dec. 31, 2021
Supplementary Cash Flow Information [Abstract]
Supplementary cash flow information [Text Block]	29. Supplementary cash flow information (a) Other cash generated from / (used in) operating activities Year ended 2021 2020 Loss on disposal of property, plant & equipment (note 5f) $ 7,038 $ 5,088 Closure cost adjustment - non-producing properties (note 5f) (4,602 ) 2,721 Share based compensation paid (6,782 ) (3,143 ) Pampacancha delivery obligation paid - (10,856 ) Restructuring - Manitoba (note 5f) 6,947 - Other 565 6,593 $ 3,166 $ 403 (b) Change in non-cash working capital: Year ended 2021 2020 Change in: Trade and other receivables $ (60,978 ) $ (37,720 ) Other financial assets/liabilities (7,758 ) 4,077 Inventories (32,752 ) (2,867 ) Prepaid expenses 1,663 (3,722 ) Trade and other payables (11,549 ) 36,247 Provisions and other liabilities 7,328 1,602 $ (104,046 ) $ (2,383 ) (c) Non-cash transactions: During the year ended December 31, 2021 and 2020, Hudbay entered into the following non-cash investing and financing activities which are not reflected in the consolidated statements of cash flows: - -

Segmented information

Segmented information	12 Months Ended
	Dec. 31, 2021
Disclosure of operating segments [abstract]
Segmented information [Text Block]	30. Segmented information Hudbay is an integrated metals producer. When making decisions on expansions, opening or closing mines, as well as day to day operations, management evaluates the profitability of the overall operation of the Company. Hudbay's main mining operations are located in Manitoba and Saskatchewan (Canada) and Cusco (Peru) and are included in the Manitoba segment and Peru segment, respectively. The Manitoba and Peru segments generate Hudbay's revenue. The Manitoba segment sells copper concentrate (containing copper, gold and silver), silver/gold doré, zinc metal and other products. The Peru segment consists of Hudbay's Constancia operation and sells copper concentrate and molybdenum concentrate. Hudbay's Arizona segment consists of the Rosemont and Copper World projects located in Arizona. Corporate and other activities include the Company's exploration activities in Chile, and Nevada. The exploration entities are not individually significant, as they do not meet the minimum quantitative thresholds. Corporate activities are not considered a segment and are included as a reconciliation to total consolidated results. Accounting policies for each reported segment are the same as those of the Company. Results from operating activities represents the profit earned by each segment without allocation of corporate costs. This is the measure reported to the chief operating decision-maker, Hudbay's President and Chief Executive Officer, for the purposes of resource allocation and the assessment of segment performance. Total assets and liabilities do not reflect intercompany balances, which have been eliminated on consolidation. Year ended December 31, 2021 Manitoba Peru Arizona Corporate Total Revenue from external customers $ 740,454 $ 761,544 $ - $ - $ 1,501,998 Cost of sales Mine operating costs 459,399 360,183 - - 819,582 Depreciation and amortization 163,516 194,408 - - 357,924 Impairment - environmental obligation 193,473 - - - 193,473 Gross (loss) profit (75,934 ) 206,953 - - 131,019 Selling and administrative expenses - - - 43,011 43,011 Exploration and evaluation expenses 5,769 9,218 24,935 39 39,961 Other expenses (income) 10,620 10,491 13,399 (4,731 ) 29,779 Results from operating activities $ (92,323 ) $ 187,244 $ (38,334 ) $ (38,319 ) $ 18,268 Net interest expense on long term debt 74,748 Accretion on streaming arrangements 42,654 Change in fair value of financial instruments 54,514 Other net finance costs 49,103 Loss before tax (202,751 ) Tax expense 41,607 Loss for the year $ (244,358 ) Year ended December 31, 2020 Manitoba Peru Arizona Corporate Total Revenue from external customers $ 615,699 $ 476,719 $ - $ - $ 1,092,418 Cost of sales Mine operating costs 391,504 300,087 - - 691,591 Depreciation and amortization 177,552 184,275 - - 361,827 Gross profit (loss) 46,643 (7,643 ) - - 39,000 Selling and administrative expenses - - - 41,408 41,408 Exploration and evaluation expenses 6,491 6,295 3,870 540 17,196 Other expenses 8,382 4,901 2,066 2,234 17,583 Results from operating activities $ 31,770 $ (18,839 ) $ (5,936 ) $ (44,182 ) $ (37,187 ) Net interest expense on long term debt 82,712 Accretion on streaming arrangements 56,670 Change in fair value of financial instruments (29,370 ) Other net finance costs 31,890 Loss before tax (179,089 ) Tax recovery (34,505 ) Loss for the year $ (144,584 ) December 31, 2021 Manitoba Peru Arizona Corporate Total Total assets $ 812,137 $ 2,624,251 $ 745,371 $ 434,472 $ 4,616,231 Total liabilities 655,095 1,023,186 75,782 1,385,340 3,139,403 Property, plant and equipment 1 706,330 2,256,687 735,127 42,822 3,740,966 1 December 31, 2021 Manitoba Peru Arizona Corporate Total Additions to property, plant and equipment $ 224,300 $ 163,604 $ 25,982 $ 11,875 $ 425,761 December 31, 2020 Manitoba Peru Arizona Corporate Total Total assets $ 801,691 $ 2,535,939 $ 718,982 $ 610,033 $ 4,666,645 Total liabilities 562,013 973,756 76,926 1,354,144 2,966,839 Property, plant and equipment 1 699,884 2,290,097 709,939 31,735 3,731,655 1 . December 31, 2020 Manitoba Peru Arizona Corporate Total Additions to property, plant and equipment $ 159,313 $ 208,805 $ 18,640 $ 32 $ 386,790 Geographical Segments The following tables represent revenue information regarding Hudbay's geographical segments for the years ended December 31, 2021 and 2020: 2021 2020 Revenue by customer location 1 Canada $ 515,967 $ 422,403 China 349,143 215,278 United States 219,853 206,906 Switzerland 166,261 55,703 Peru 82,598 56,437 Singapore 80,668 29,314 Germany 37,335 11,725 Japan 20,524 - Chile 10,773 9,967 Philippines 4,050 77,575 Other 14,826 7,110 $ 1,501,998 $ 1,092,418 1 During the year ended December 31, 2021, five customers accounted for approximately 28%, 11%, 5%, 5%, and 5% respectively, of total revenue during the year. Revenue from these customers has been presented in the Manitoba and Peru operating segments. During the year ended December 31, 2020, eight customers accounted for approximately 36%, 17%, 13%, 7%, 7%, 5%, 5% and 5% respectively, of total revenue during the year. Revenue from these customers has been presented in the Manitoba and Peru operating segments.

Significant accounting polici_2

Significant accounting policies (Policies)	12 Months Ended
	Dec. 31, 2021
Significant Accounting Policies [Abstract]
Basis of consolidation [Policy Text Block]	(a) Basis of consolidation: Intercompany balances and transactions are eliminated upon consolidation. When a Hudbay entity transacts with an associate or jointly controlled entity of the Company, unrealized profits and losses are eliminated to the extent of Hudbay's interest in the relevant associate or joint venture. The accounting policies of Hudbay's entities are changed when necessary to align them with the policies adopted by the Company. Subsidiaries A subsidiary is an entity controlled by Hudbay. The financial statements of subsidiaries are included in the consolidated financial statements from the date that control commences until the date that control ceases. Business combinations and goodwill Should Hudbay make an acquisition, it first determines whether the assets acquired and liabilities assumed constitute a business, in which case the acquisition requires accounting as a business combination. Management applies judgement in determining whether the acquiree is capable of being conducted and managed for the purpose of providing a return, considering the inputs of the acquiree and processes applied to those inputs that have the ability to create outputs. Hudbay applies the acquisition method of accounting to business combinations, whereby the goodwill is measured at the acquisition date as the fair value of the consideration transferred including the recognized amount of any non-controlling interests in the acquiree. When the excess is negative, a bargain purchase gain is recognized immediately in the consolidated income statements. The assessment of fair values on acquisition includes those mineral reserves and resources that are able to be reliably measured. In determining these fair values, management must also apply judgement in areas including future cash flows, metal prices, exchange rates and appropriate discount rates. Changes in such estimates and assumptions could result in significant differences in the amount of goodwill recognized. The consideration transferred is the aggregate of the fair values, at the date of the acquisition, of the sum of the assets transferred, the liabilities incurred or assumed, and the equity instruments issued by the acquirer in exchange for control of the acquiree. Acquisition-related costs are recognized in the consolidated income statements as incurred, unless they relate to issuance of debt or equity securities. Where applicable, the consideration transferred includes any asset or liability resulting from a contingent consideration arrangement and measured at its acquisition date fair value. Subsequent changes in such fair values are adjusted against the cost of acquisition where they qualify as measurement period adjustments. All other subsequent changes in the fair value of contingent consideration classified as an asset or liability are accounted for in accordance with relevant IFRS. Changes in the fair value of contingent consideration classified as equity are not recognized. Where a business combination is achieved in stages, the Company's previously held interests in the acquired entity are remeasured to fair value at the acquisition date, which is the date Hudbay attains control, and any resulting gain or loss is recognized in the consolidated income statements. Amounts previously recognized in other comprehensive income ("OCI") related to interests in the acquiree prior to the acquisition date are reclassified to the consolidated income statements, where such treatment would be appropriate if that interest were disposed of. After initial recognition, goodwill is measured at cost less any accumulated impairment losses. For the purpose of impairment testing, goodwill acquired in a business combination is, from the acquisition date, allocated to each of Hudbay's CGUs that are expected to benefit from the synergies of the combination, irrespective of whether other assets or liabilities of the acquiree are assigned to those units. Goodwill is allocated to the lowest level at which it is monitored for internal management purposes and is not larger than an operating segment before aggregation. Where goodwill forms part of a CGU and part of the operation within that unit is disposed of, the goodwill associated with the disposed operation is included in the determination of any gain or loss on disposal. Goodwill is not amortized and is tested for impairment annually and whenever there is an indication of impairment. If any such indication exists, the recoverable amount of the CGU is estimated in order to determine the extent of the impairment, if any. The recoverable amount is determined as the higher of fair value less direct costs to sell and the CGU's value in use. An impairment loss in respect of goodwill is not reversed. Fair value for mineral interests and related goodwill is generally determined as the present value of the estimated future cash flows expected to arise from the continued use of the asset, including any expansion prospects, and its eventual disposal, using assumptions that an independent market participant may take into account. Value in use is determined as the present value of the estimated future cash flows expected to arise from the continued use of the asset in its present form and its eventual disposal. Value in use is determined by applying assumptions specific to Hudbay's continued use and cannot take into account future development. The weighted average cost of capital of Hudbay or comparable market participants is used as a starting point for determining the discount rates, with appropriate adjustments for the risk profile of the countries in which the individual CGUs operate and the specific risks related to the development of the project. Where the asset does not generate cash flows that are independent of other assets, Hudbay estimates the recoverable amount of the CGU to which the asset belongs. If the carrying amount of an asset or CGU exceeds its recoverable amount, the carrying amount of the asset or CGU is reduced to its recoverable amount. An impairment loss is recognized as an expense in the consolidated income statements.
Translation of foreign currencies [Policy Text Block]	(b) Translation of foreign currencies: Management determines the functional currency of each Hudbay entity as the currency of the primary economic environment in which the entity operates. Foreign currency transactions Transactions in foreign currencies are translated to the respective functional currencies of Hudbay's entities at exchange rates in effect at the transaction dates. At the end of each reporting period, monetary assets and liabilities denominated in foreign currencies are translated to the functional currency using the closing exchange rate. Non-monetary assets and liabilities measured at fair value are translated using the exchange rates at the date when fair value was determined. Non-monetary assets and liabilities measured at historical cost in a foreign currency are translated using exchange rates that were in effect at the transaction dates. The same translations are applied when an entity prepares its financial statements from books and records maintained in a currency other than its functional currency, except revenue and expenses may be translated at monthly average exchange rates that approximate those in effect at the transaction dates. Foreign currency gains and losses arising on period-end revaluations are recognized in the consolidated income statements, except for a financial liability designated as a hedge of a net investment in a foreign operation, or qualifying cash flow hedges, which are recognized in OCI. Foreign operations For the purpose of the consolidated financial statements, assets and liabilities of Hudbay's entities that have functional currencies other than the US dollar are translated to US dollars at the reporting date using the closing exchange rate. Revenue and expenses are translated at monthly average exchange rates that approximate those in effect at the transaction dates. Differences arising from these foreign currency translations are recognized in OCI and presented within equity in the foreign currency translation reserve. When a foreign operation is disposed, the relevant exchange differences accumulated in the foreign currency translation reserve are transferred to the consolidated income statements as part of the profit or loss on disposal. On the partial disposal of a subsidiary that includes a foreign operation, the relevant proportion of such amount is reattributed to non-controlling interests. On disposal of a partial investment in an associate or joint venture that includes a foreign operation while retaining significant influence or joint control, the relevant proportion is reclassified to profit or loss. Net investment in a foreign operation Foreign currency gains and losses arising on translation of a monetary item receivable from or payable to a foreign operation for which settlement is neither planned nor likely to occur in the foreseeable future are considered to form part of a net investment in the foreign operation. Such gains and losses are recognized in OCI and presented within equity in the foreign currency translation reserve.
Revenue recognition [Policy Text Block]	(c) Revenue recognition: Revenue from the sale of goods is measured at the fair value of the consideration received or receivable, net of treatment and refining charges. Revenue from the sale of by-products is included within revenue. Revenue is recognized when control of the goods sold has been transferred to the customer. Control is deemed to have passed to the customer when significant risk and reward of the product has passed to the customer, Hudbay has a present right to payment, and physical possession of the product has been transferred to the customer. Sales of doré are recorded when a trade confirmation is duly signed and executed between Hudbay and the end purchaser. Sale of concentrate and finished zinc frequently occur under the following terms, and management has assessed these terms in order to determine timing of transfer of control and revenue recognition as generally outlined in the following table. Incoterms used by Hudbay Revenue recognized when goods: Cost, Insurance and Freight (CIF) Are loaded on board the vessel Free on Board (FOB) Are loaded on board the vessel Delivered at place (DAP) Arrive at the named place of destination Delivered at terminal (DAT) Arrive at the named place of destination Free Carrier (FCA) Arrive at the named place of delivery Sales of concentrate and certain other products are provisionally priced. For these contracts, sales prices are subject to final adjustment at the end of a future period after shipment, based on quoted market prices during the quotational period specified in the contract. Revenue is recognized when the above criteria are achieved, using weight and assay results and forward market prices to estimate the fair value of the total consideration receivable. Therefore, revenue is initially recorded based on an initial provisional invoice. Subsequently, at each reporting date, until the provisionally priced sale is finalized, sales receivables are marked to market, with adjustments (both gains and losses) recorded within revenue separately as "Pricing and volume adjustments" in the notes to the consolidated financial statements and in trade and other receivables on the consolidated balance sheets. As per IFRS 15 Revenue from contracts with customers Financial Instruments Hudbay only includes in the transaction price an amount which is not highly likely to be subject to significant subsequent revenue reversal. Within sales contracts with customers, separate performance obligations may arise pertaining to the shipping of goods sold. If applicable, costs and the transaction price are allocated on a relative standalone selling basis to any separate performance obligations and are recognized over the period of time the goods sold are shipped, on a gross basis. Hudbay recognizes deferred revenue in the event it receives payments from customers before a sale meets criteria for revenue recognition. There is a significant financing component associated with the Company's precious metal streaming arrangements since funds were received in advance of the delivery of concentrate. When a significant financing component is recognized, finance expense will be higher and revenues will be higher as the larger deferred revenue balance is amortized to revenues. A market-based discount rate is utilized at the inception of each of the respective stream agreements to determine a discount rate for computing the interest charges for the significant financing component of the deferred revenue balance. As product is delivered, the deferred revenue amount including accreted interest will be drawn down. The draw down rate requires the use of proven and probable reserves and certain resources in the calculation that are beyond proven and probable reserves which management is reasonably confident will be transferable to reserves. Key estimates used in determining the significant financing component include the discount rate and the reserve and resources assumed for conversion.
Cost of sales [Policy Text Block]	(d) Cost of sales: Cost of sales consists of those costs previously included in the measurement of inventory sold during the period, as well as certain costs not included in the measurement of inventory, such as the cost of warehousing and distribution to customers, provisional pricing adjustments related to purchased concentrates, profit sharing, royalty payments, share-based compensation expense and other indirect expenses related to producing operations. Cost of sales also include non-cash net realizable value adjustments to inventory, one-time adjustments related to overheads incurred when not operating at normal capacity and one-time labour charges related to facilitating the production of inventories for past service pension costs and severance.
Cash and cash equivalents [Policy Text Block]	(e) Cash and cash equivalents: Cash and cash equivalents include cash, demand deposits and short-term, highly liquid investments that are readily convertible to known amounts of cash and are subject to an insignificant risk of changes in value. Cash equivalents have maturities of three months or less at the date of acquisition. Interest earned is included in finance income on the consolidated income statements and in investing activities on the consolidated statements of cash flows. Amounts that are restricted from being used for at least twelve months after the reporting date are classified as non-current assets and presented in restricted cash on the consolidated balance sheets. Changes in restricted cash balances are classified as investing activities on the consolidated statements of cash flows.
Inventories [Policy Text Block]	(f) Inventories: Inventories consist of stockpiles, in-process inventory (concentrates and metals), metal products and supplies. Concentrates, doré, metals and all other saleable products are valued at the lower of cost and estimated net realizable value. Net realizable value represents the estimated selling price for inventories less all estimated direct and indirect costs of completion and costs necessary to make the sale. Where the net realizable value is less than cost, the difference is charged to the consolidated income statements as an impairment charge in cost of sales. Costs associated with stripping activities in an open pit mine are capitalized to inventory and recorded through cost of sales unless the stripping activity can be shown to improve access to further quantities of ore that will be mined in future periods, in which case, the stripping costs are capitalized to property, plant and equipment. Cost of production of concentrate inventory is determined on a weighted average cost basis and the cost of production of finished metal inventory is determined using the first in first out basis. The cost of production includes direct costs associated with conversion of production inventory based on normal production capacity: material, labour, contractor expenses, purchased concentrates, and an attributable portion of production overheads and depreciation of all property, plant and equipment involved with the mining and production process. Hudbay measures in-process inventories based on assays of material received at metallurgical plants and estimates of recoveries in the production processes. Due to significant uncertainty associated with volume and metal content, immaterial costs are not allocated to routine operating levels of stockpiled ore. Estimates and judgements are required to assess the nature of any significant changes to levels of ore stockpiles and determining whether allocation of costs is required. Supplies are valued at the lower of average cost and net realizable value.
Intangible assets [Policy Text Block]	(g) Intangible assets: Computer software is measured at cost less accumulated amortization and accumulated impairment losses. Costs include all directly attributable costs necessary to create, produce and prepare the asset to be capable of operating it in the manner intended by management. Amortization methods, useful lives, and residual values if any, are reviewed at each year end and adjusted prospectively, if required. When an intangible asset is disposed of, or when no further economic benefits are expected, the asset is derecognized, and any resulting gain or loss is recorded in the consolidated income statements. Currently, the Company's intangible assets relate primarily to enterprise resource planning ("ERP") information systems, which are amortized over their estimated useful lives.
Exploration and evaluation expenditures [Policy Text Block]	(h) Exploration and evaluation expenditures: Exploration and evaluation activity begins when Hudbay obtains legal rights to explore a specific area and involves the search for mineral reserves, the determination of technical feasibility, and the assessment of commercial viability of an identified resource. Expenditures incurred in the exploration and evaluation phase include the cost of acquiring interests in mineral rights, licenses and properties and the costs of Hudbay's exploration activities, such as researching and analyzing existing exploration data, gathering data through geological studies, exploratory drilling, trenching, sampling, and certain feasibility studies. Hudbay expenses the cost of its exploration and evaluation activities and capitalizes the cost of acquiring interests in mineral rights, licenses and properties in business combinations, asset acquisitions or option agreements. Amounts capitalized are recognized as exploration and evaluation assets and presented in property, plant and equipment. Exploration and evaluation assets acquired as a result of an asset acquisition or option agreement are initially recognized at cost, and those acquired in a business combination are recognized at fair value on the acquisition date. They are subsequently carried at cost less accumulated impairment. No depreciation is charged during the exploration and evaluation phase. Hudbay expenses the cost of subsequent exploration and evaluation activity related to acquired exploration and evaluation assets. Cash flows associated with acquiring exploration and evaluation assets are classified as investing activities in the consolidated statements of cash flows; those associated with exploration and evaluation expenses are classified as operating activities. Judgement is required in determining whether the respective costs are eligible for capitalization where applicable, and whether they are likely to be recoverable, which may be based on assumptions about future events and circumstances. Estimates and assumptions made may change if new information becomes available. Hudbay monitors exploration and evaluation assets for factors that may indicate their carrying amounts are not recoverable. If such indicators are identified, the Company tests the exploration and evaluation assets or their CGUs, as applicable, for impairment. Hudbay also tests for impairment when assets reach the end of the exploration and evaluation phase. Exploration and evaluation assets are transferred to capital works in progress within property, plant and equipment once the Company determines that probable future economic benefits will be generated as a result of the expenditures. Hudbay's determination of probable future economic benefit is based on management's evaluation of the technical feasibility and commercial viability of the geological properties of a given ore body based on information obtained through evaluation activities, including metallurgical testing, resource and reserve estimates and the economic assessment of whether the ore body can be mined economically. Tools that may be used to determine this include a preliminary feasibility study, confidence in converting resources into reserves and the probability that the property could be developed into a mine site. At that time, the property is considered to enter the development phase, and subsequent evaluation costs are capitalized.
Property, plant and equipment [Policy Text Block]	(i) Property, plant and equipment: Hudbay measures items of property, plant and equipment at cost less accumulated depreciation and any accumulated impairment losses. The initial cost of an item of property, plant and equipment includes its purchase price or construction costs, including import duties and non-refundable purchase taxes, any costs directly attributable to bringing the asset into operation, and for qualifying assets, borrowing costs. The initial cost of property, plant and equipment also includes the initial estimate of the cost of dismantling and removing the item and restoring the site on which it is located, the obligation which Hudbay incurs either when the item is acquired or as a consequence of having used the item during a particular period for purposes other than to produce inventories during that period. Capitalization of costs ceases once an asset is in the location and condition necessary for it to be capable of operating in the manner intended by management. At this time, depreciation commences. For a new mine, this occurs upon commencement of commercial production. Up to and including December 31, 2020, any revenue, less cost to produce, earned in the process of preparing an asset to be capable of operating in the manner intended by management is included in the cost of the constructed asset. Any other incidental revenue earned prior to commencement of commercial production is recognized in the consolidated income statements. As a result of the early adoption of the amendments to IAS 16, since January 1, 2021, any revenues less cost to produce, earned prior to commencement of commercial production, are included in the consolidated income statements. Carrying amounts of property, plant and equipment, including right-of-use ("ROU") assets, are depreciated to their estimated residual value over the estimated useful lives of the assets or the estimated life of the related mine or plant, if shorter. Where components of an asset have different useful lives, depreciation is calculated on each separate component. Components may be physical or non-physical, including the cost of regular major inspections and overhauls required in order to continue operating an item of property, plant and equipment. Certain items of property, plant and equipment are depreciated on a unit-of-production basis. The unit-of-production method is based on proven and probable tonnes of ore reserves. There are numerous uncertainties inherent in estimating ore reserves, and assumptions that were valid at the reporting date may change when new information becomes available. The actual volume of ore extracted and any changes in these assumptions could affect prospective depreciation rates and carrying values. The carrying amount of an item of property, plant and equipment is derecognized on disposal or when no future economic benefits are expected from its use or disposal. Upon derecognition of an item of property, plant and equipment, the difference between its carrying value and net sales proceeds, if any, is presented as a gain or loss in other operating income or expense in the consolidated income statements. i. Capital works in progress consist of items of property, plant and equipment in the course of construction or mineral properties in the course of development, including those transferred upon completion of the exploration and evaluation phase. On completion of construction or development, costs are transferred to plant and equipment and/or mining properties as appropriate. Capital works in progress are not depreciated. ii. Mining properties consist of costs transferred from capital works in progress when a mining property reaches commercial production, costs of subsequent mine and exploration development, and acquired mining properties in the production stage. Mining properties include costs directly attributable to bringing a mineral asset into the state where it is capable of operating in the manner intended by management and includes such costs as the cost of shafts, ramps, track haulage drifts, ancillary drifts, pumps, electrical substations, refuge stations, ventilation raises, permanent manways, and ore and waste pass raises. The determination of development costs to be capitalized during the production stage of a mine operation requires the use of judgements and estimates such as estimates of tonnes of waste to be removed over the life of the mining area and economically recoverable reserves extracted as a result. A mining property is considered to be capable of operating in a manner intended by management when it commences commercial production based on pre-established criteria. Upon commencement of commercial production, a mining property is depreciated on a unit-of-production method. Unit-of-production depreciation rates are determined based on the related proven and probable mineral reserves and associated future development costs. Subsequent mine development costs are capitalized to the extent they are incurred in order to access reserves mineable over more than one year. Ongoing maintenance and development expenditures are expensed as incurred and included in cost of sales in profit or loss. These include ore stope access drifts, footwall and hangingwall drifts in stopes, drawpoints, drill drifts, sublevels, slots, drill raises, stope manway access raises and definition diamond drilling. iii. Plant and equipment consists of buildings and fixtures, surface and underground fixed and mobile equipment and assets under lease. Plant and equipment are depreciated on either unit-of-production or straight-line basis based on factors including the production life of assets and mineable reserves. In general, mining assets are depreciated using a unit-of-production method; equipment is depreciated using the straight-line method, based on the shorter of its useful life and that of the related mine or facility; and plants are depreciated using the straight-line method, with useful lives limited by those of related mining assets. iv. At inception of a contract, Hudbay assesses whether a contract is, or contains, a lease. A contract is, or contains, a lease if the contract conveys the right to control the use of an identified asset for a period of time in exchange for consideration. The Company assesses the following criteria in the determination of whether a contract conveys the right to control the use of an identified asset: • • • • • The Company recognizes a ROU asset and lease liability at the lease commencement date. The initial measurement of the ROU asset is on a present value basis. This is based on the calculated lease liability plus any initial direct costs incurred, an estimate of removal or restoration costs, and any payments made prior to commencement of the lease less any lease incentives received. The right of use asset is subsequently depreciated using the straight-line method from the commencement date to the earlier of the end of the useful life of the right-of-use asset or the end of the lease term. The estimated useful lives of the right-of-use assets are determined on the same basis as those of property and equipment. In addition, the right-of-use asset is periodically reduced by impairment losses, if any, and adjusted for certain remeasurements of the lease liability. The lease liability is measured at the present value of the lease payments that are yet to be paid at the commencement date, discounted using the interest rate implicit in the lease or, if that rate cannot be easily determined, Hudbay's incremental borrowing rate. Generally, the Company uses its incremental borrowing rate as the discount rate for applicable leases. Lease payments included in the measurement of the lease liability comprise fixed payments including in substance fixed payments and variable payments that depend on an index or rate, amounts expected to be payable under a residual value guarantee and the additional costs Hudbay reasonably expects to incur due to purchase options, extension options and termination options reasonably expected to be exercised. The lease liability is measured at amortized cost using the effective interest method. It is remeasured when there is a change in the expected future cash flows of a leasing contract either due to a change in index or rate, or due to a change in terms of the contract. When the lease liability is remeasured in this way, a corresponding adjustment is made to the carrying amount of the right-of-use asset, or is recorded in profit or loss if the carrying amount of the right-of-use asset is zero. Hudbay has elected not to separate non-lease components and account for the lease and non-lease components as a single lease component for lease contracts of all asset classes. The Company has elected not to recognize ROU assets and lease liabilities for short-term leases of machinery that have a lease term of 12 months or less and leases of low-value assets. Hudbay recognizes the lease payments associated with these leases as an expense on a straight-line basis over the lease term. Hudbay does not enter into transactions where the Company acts as a lessor. The incremental borrowing rate used for new ROU leases is a key management judgement. v. • • • • ◦ ◦ • Hudbay reviews its depreciation methods, remaining useful lives and residual values at least annually and accounts for changes in estimates prospectively. vi. Commercial production is the level of activities intended by management for a mine, or a mine and mill complex, to be capable of operating in the manner intended by management. Hudbay considers a range of factors when determining the level of activity that represents commercial production for a particular project, including a predetermined percentage of design capacity for the mine and mill; achievement of continuous production, ramp-ups, or other output; or specific factors such as recoveries, grades, or inventory build-ups. In a phased mining approach, management may consider achievement of specific milestones at each phase of completion. In a non-phased mining approach, management considers average actual metrics that are at least 60% of average design capacity or plan over a continuous period. Management assesses the operation's ability to sustain production over a period of approximately one to three months, depending on the complexity related to the stability of continuous operation. Commercial production is considered to have commenced, and depreciation expense is recognized, at the beginning of the month after criteria have been met. vii. The Company capitalizes borrowing costs that are directly attributable to the acquisition, construction or production of qualifying assets, which are assets that necessarily take a substantial period of time, generally one year or more, to get ready for their intended use or sale. Capitalization of borrowing costs ceases once the qualifying assets commence commercial production or are otherwise ready for their intended use or sale. Where funds are borrowed specifically to finance a project, the amount capitalized represents the actual borrowing costs incurred. Where the funds used to finance a project form part of general borrowings, the amount capitalized is calculated using a weighted average of interest rates applicable to relevant general borrowings of Hudbay during the period, to a maximum of actual borrowing costs incurred. Investment income earned by temporarily investing specific borrowings pending their expenditure on qualifying assets is deducted from the borrowing costs eligible for capitalization. Capitalization of interest is suspended during extended periods in which active development is interrupted. All other borrowing costs are recognized in the consolidated income statements in the period in which they are incurred. viii. Costs associated with stripping activities in an open pit mine are capitalized to inventory and recorded through cost of sales unless the stripping activity can be shown to improve access to further quantities of ore that will be mined in future periods, in which case, the stripping costs are capitalized to property, plant and equipment. Capitalized stripping costs are included in "mining properties" within property, plant and equipment. Capitalized stripping costs are depreciated using a units-of-production method over the expected reserves within a given phase of mine development.
Impairment of non-financial assets [Policy Text Block]	(j) Impairment of non-financial assets: At the end of each reporting period, Hudbay reviews the carrying amounts of property, plant and equipment, exploration and evaluation assets and intangible assets - computer software to determine whether there is any indication of impairment. If any such indication exists, the Company estimates the recoverable amount of the asset in order to determine the extent of the impairment loss, if any. Hudbay generally assesses impairment at the level of CGUs, which are the smallest identifiable groups of assets that generate cash inflows that are largely independent of cash inflows from other assets. Hudbay's CGUs consist of Manitoba, Peru, Arizona and greenfield exploration and evaluation assets. The Company allocates near mine exploration and evaluation assets to CGUs based on their operating segment, geographic location and management's intended use for the property. Near mine exploration and evaluation assets are allocated to CGUs separate from those containing producing or development-phase assets, except where such exploration and evaluation assets have the potential to significantly affect the future production of producing or development-phase assets. Goodwill, if recorded, is tested for impairment annually and whenever there is an indication that the asset may be impaired. Where an indicator of impairment exists, a formal estimate of the recoverable amount of the asset or CGU is made. The recoverable amount is the higher of the fair value less costs of disposal and value in use: - - Hudbay estimates future cash flows based on estimated future recoverable mine production, expected sales prices (considering current and historical commodity prices, price trends and related factors), production levels and cash costs of production, all based on detailed engineering LOM plans. Future recoverable mine production is determined from reserves and resources after taking into account estimated dilution and recoveries during mining, and estimated losses during ore processing and treatment. Estimates of recoverable production from measured, indicated and inferred mineral resources not included in the LOM plan are assessed for economic recoverability and may also be included in the valuation of fair value less costs of disposal. Gains from the expected disposal of assets are not included in estimated future cash flows. Assumptions underlying future cash flow estimates are subject to risks and uncertainties. Changes in estimates may affect the expected recoverability of the Company's investments in mining properties. If the carrying amount of an asset or CGU exceeds its recoverable amount, the carrying amount is reduced to the recoverable amount, and an impairment loss is recognized in the consolidated income statements in the expense category consistent with the function of the impaired asset or CGU. Hudbay presents impairment losses on the consolidated income statements as part of results from operating activities. Impairment losses recognized in respect of a CGU are allocated first to reduce the carrying amount of any goodwill allocated to the CGU and then to reduce the carrying amounts of other assets in the CGU on a pro-rata basis for depreciable assets. The Company assesses previously recognized impairment losses each reporting date for any indications that the losses have decreased or no longer exist. Such an impairment loss is reversed, in full or in part, if there have been significant changes with a positive effect on the estimates used to determine the recoverable amount. An impairment loss is reversed only to the extent that the asset's carrying amount does not exceed the carrying amount that would have been determined, net of depreciation or amortization, if no impairment loss had been recognized for the asset in prior years. Such reversals of impairment losses are recognized in the consolidated income statements. An impairment loss recognized in relation to goodwill is not reversed for subsequent increases in the recoverable amount.
Assets held for sale [Policy Text Block]	(k) Assets held for sale: The Company classifies non-current assets, or disposal groups consisting of assets and liabilities, as held for sale when it expects to recover their carrying amounts primarily through sale rather than through continuing use. To meet criteria to be held for sale, the sale must be highly probable, and the assets or disposal groups must be available for immediate sale in their present condition. Hudbay must be committed to a plan to sell the assets or disposal group, and the sale should be expected to qualify for recognition as a completed sale within one year from the date of classification. The Company measures assets or disposal groups at the lower of their carrying amount and fair value less costs of disposal. Impairment losses on initial classification as held for sale and subsequent gains and losses on remeasurement are recognized in the consolidated income statements; however, gains are not recognized in excess of any cumulative impairment loss. Any impairment loss on a disposal group first is allocated to goodwill, and then to remaining assets and liabilities on pro rata basis, except that no loss is allocated to inventories, financial assets, deferred tax assets, employee benefit assets or investment property. Upon classifying assets or disposal groups as held for sale, Hudbay presents the assets separately as a single amount and the liabilities separately as a single amount on the consolidated balance sheets. When an asset no longer meets the criteria for classification as an asset held for sale, the Company records the asset at the lower of its recoverable amount and the carrying amount before the asset was classified as held for sale.
Pension and other employee benefits [Policy Text Block]	(l) Pension and other employee benefits: Hudbay has non-contributory and contributory defined benefit programs for the majority of its Canadian employees. The defined benefit pension benefits are based on years of service and final average salary for the salaried plans and are based on a flat dollar amount combined with years of service for the hourly plans. The Company provides non pension health and other post-employment benefits to certain active employees and pensioners (post-employment benefits) and also provides disability income, health benefits and other post-employment benefits to hourly and salaried disabled employees (other long-term employee benefits). Hudbay accrues its obligations under the defined benefit plans as the employees render the services necessary to earn the pension and post-employment benefits. The actuarial determination of the accrued benefit obligations for pensions and post-employment benefits uses the projected benefit method pro-rated on service (which incorporates management's best estimate of future salary levels, other cost escalation, retirement ages of employees and other actuarial factors). For other long-term employee benefits, the Company recognizes the full cost of the benefit obligation at the time the employee becomes disabled. Actuarial advice is provided by external consultants. For the funded defined benefit plans, Hudbay recognizes the deficit or excess of the fair value of plan assets over the present value of the defined benefit obligation as a liability or an asset in the consolidated balance sheets. However, the Company recognizes an excess of assets only to the extent that it represents a future economic benefit which is available in the form of refunds from the plan or reductions in future contributions to the plan. When these criteria are not met, it is not recognized but is disclosed in the notes to the consolidated financial statements. Impacts of minimum funding requirements in relation to past service are considered when determining the balance sheet position. Defined benefit costs are categorized as follows: - - - The first two components of defined benefit costs shown above are recognized in the consolidated income statements. Past service cost is recognized in the consolidated income statements in the period of a plan amendment. Net interest is calculated by applying the discount rate at the beginning of the period to the net defined benefit liability or asset. Remeasurement, comprising actuarial gains and losses, the effect of changes to the asset ceiling (if applicable) and the return on plan assets (excluding interest), is reflected immediately in the consolidated balance sheets with a gain or loss recognized in OCI in the period in which they occur. Remeasurement recognized in OCI is reflected in the remeasurement reserve and will not be reclassified to the consolidated income statements. For the other long-term employee benefits plan, remeasurements are recognized immediately in the consolidated income statements. Actuarial determinations used in estimating obligations relating to these plans incorporate assumptions using management's best estimates of factors including plan performance, salary escalation, retirement dates of employees and healthcare cost escalation rates. Due to the complexity of the valuation, the underlying assumptions and its long-term nature, a defined benefit obligation is highly sensitive to changes in these assumptions. All assumptions are reviewed at each reporting date. In determining the appropriate discount rate, management considers the interest rates on corporate bonds in the respective currency with at least an AA rating, with extrapolated maturities corresponding to the expected duration of the defined benefit obligation. The mortality rate is based on publicly available mortality tables for the specific country. Future salary increases and pension increases are based on expected future inflation rates for the respective country. Hudbay also has defined contribution plans providing pension benefits for certain of its salaried employees and certain of its US employees utilizing 401K plans. The Company recognizes the cost of the defined contribution plans based on the contributions required to be made during each period. Termination benefits are recognized as an expense when Hudbay is committed demonstrably, without realistic possibility of withdrawal, to a formal detailed plan to either terminate employment before the normal retirement date, or to provide termination benefits as a result of an offer made to encourage voluntary redundancy. Termination benefits for voluntary redundancies are recognized as an expense if the Company has made an offer of voluntary redundancy, it is probable that the offer will be accepted, and the number of acceptances can be estimated reliably. Benefits that are payable more than one year after the reporting period are discounted to their present value.
Environmental and other provisions [Policy Text Block]	(m) Environmental and other provisions: Provisions are recognized when Hudbay has a present obligation (legal or constructive) as a result of a past event, it is probable that an outflow of resources will be required to settle the obligation, and a reliable estimate can be made. The provisions are recorded as management's best estimate of the amount required to settle an obligation. Provisions are stated at their present value, which is determined by discounting the expected future cash flows at a pre-tax rate that reflects current market assessments of the time value of money and the risks specific to the liability. Decommissioning, restoration and similar liabilities Provisions are recorded for legal and constructive obligations associated with the future costs of rehabilitating the Company's current and previous operating and development sites. Such costs are associated with decommissioning and restoration activities such as dismantling and removing structures, rehabilitating mines and tailings, and reclamation and re-vegetation of affected areas. The present value of estimated costs is recorded in the period in which the asset is installed or the environment is disturbed and a reasonable estimate of future costs and discount rates can be made. The provision is discounted using a risk-free rate, and estimates of future cash flows are adjusted to reflect risk. Subsequent to the initial measurement, the obligation is adjusted to reflect the passage of time and changes in the estimated future cash flows underlying the obligation. The increase in the provision due to the passage of time is recognized as finance expense, whereas increases and decreases due to changes in the estimated future cash flows, which are not the result of current inventory production, are capitalized and depreciated over the life of the related operating asset. Actual costs incurred upon settlement of the site restoration obligation are charged against the provision to the extent the provision was established for those costs. Upon settlement of the liability, a gain or loss may be recorded. For closed sites, changes to estimated costs are recognized immediately in the consolidated income statements within other expenses. Hudbay assesses the reasonableness of its estimates and assumptions each year and when conditions change, the estimates are revised accordingly. Judgement is required to determine the scope and timing of future decommissioning and restoration activities, as well as best available estimates and assumptions including discount rates, expected timing of decommissioning and restoration costs, inflationary factors and market risks. Changes in cost estimates, which may arise from changes in technology and pricing of the individual components of the cost may result in offsetting changes to the asset and liability and corresponding changes to the associated depreciation and finance costs. In view of the uncertainties concerning these future obligations, the ultimate timing and cost of reclamation and mine closure may differ materially from these estimates. If the change in estimate results in a significant increase in the decommissioning liability and therefore an addition to the carrying value of the asset, the Company considers whether this is an indication of impairment of the asset as a whole and, if so, tests for impairment in accordance with IAS 36, Impairment of non-financial assets In view of the uncertainties concerning environmental remediation, the ultimate cost of decommissioning and restoration liabilities could differ materially from the estimated amounts provided. The estimate of the total liability is subject to change based on amendments to laws and regulations and as new information concerning Hudbay's operations becomes available. Future changes, if any, to the estimated total liability as a result of amended requirements, laws, regulations and operating assumptions, as well as discount rates, may be significant and would be recognized prospectively as a change in accounting estimate, when applicable. Environmental laws, regulations and technology are continually evolving in all regions in which the Company operates. Hudbay is not able to determine the impact, if any, of environmental laws, regulations and technology that may be enacted in the future on its results of operations or financial position due to the uncertainty surrounding the ultimate form that such future laws and regulations may take. Onerous contracts A contract is considered to be onerous when the unavoidable costs of meeting obligations under the contract exceed the economic benefits expected to be received under it. Hudbay records a provision for any onerous contracts at the lesser of costs to comply with a contract and costs to terminate it. Restructuring provisions A provision for restructuring is recognized when management, with appropriate authority within Hudbay, has approved a detailed and formal restructuring plan, and the restructuring has either commenced or has been announced publicly. Future operating costs are not provided for.
Financial Instruments [Policy Text Block]	(n) Financial instruments: Non-derivative financial instruments are initially recognized at fair value plus, in the case of a financial asset or financial liability not measured at fair value through profit or loss, directly attributable transaction costs. Measurement in subsequent periods depends on the financial instrument's classification. Hudbay uses trade date accounting for regular way purchases or sales of financial assets. The Company determines the classification of its financial instruments and non-financial derivatives at initial recognition. Financial assets and liabilities are offset and the net amount presented in the consolidated balance sheets when, and only when, Hudbay has a legal right to offset the amounts and intends either to settle on a net basis or to realize the asset and settle the liability simultaneously. The classification of financial assets is based on the results of the contractual characteristics test and the business model assessment which will result in the financial asset being classified as either: amortized cost, fair value through profit or loss ("FVTPL") or fair value through other comprehensive income ("FVTOCI"). i. Financial assets at fair value through profit or loss Provisionally priced copper sales receivables, warrants and investments in securities of junior mining companies are classified as financial assets at fair value through profit or loss and are measured at fair value. The unrealized gains or losses related to changes in fair value are reported in other finance income/expense in the consolidated income statements. Amortized cost Cash, certain receivables, payables and restricted cash are classified as and measured at amortized cost and are carried at amortized cost using the effective interest rate method, less impairment losses, if any. Non-derivative financial liabilities Accounts payable and senior unsecured notes are initially recognized at fair value and subsequently accounted for at amortized cost, using the effective interest method. The amortization of senior unsecured notes issue costs is calculated using the effective interest rate method. ii. Derivatives are initially recognized at fair value when Hudbay becomes a party to the derivative contract and are subsequently re-measured to fair value at the end of each reporting period. The resulting gain or loss is recognized in the consolidated income statements immediately unless the derivative is designated and effective as a hedging instrument. Derivatives with positive fair value are recognized as assets; derivatives with negative fair value are recognized as liabilities. Contracts to buy or sell non-financial items that meet the definition of a derivative but were entered into and are held in accordance with the Company's expected purchase, sale or usage requirements are not recognized as derivatives. Such contracts are recorded as non-derivative purchases and sales. iii. Hudbay considers whether a contract contains an embedded derivative when it becomes a party to the contract. Derivatives embedded in other financial liabilities or other host contracts are treated as separate derivatives when their risks and characteristics are not closely related to those of the host contracts and the host contracts are not measured at FVTPL. iv. The fair value of a financial instrument is the amount for which an asset could be exchanged, or a liability settled, between knowledgeable, willing parties in an arm's length transaction. Fair values of financial instruments traded in active markets are determined based on quoted market prices, where available. Bid prices are generally used for assets held or liabilities to be issued; asking prices are generally used for assets to be acquired or liabilities held. For financial instruments not traded in an active market, fair values are determined based on appropriate valuation techniques. Such techniques may include discounted cash flow analysis, using recent arm's length market transactions, reference to the current fair value of another instrument that is substantially the same, and other valuation models. The Company applies a hierarchy to classify valuation methods used to measure financial instruments carried at fair value. Levels 1 to 3 are defined based on the degree to which fair value inputs are observable and have a significant effect on the recorded fair value, as follows: - - - An analysis of fair values of financial instruments is provided in note 26. v. Hudbay recognizes loss allowances for Expected Credit Losses ("ECL") for trade receivables not measured at FVTPL. Loss allowances for trade receivables are measured at an amount equal to lifetime ECL. ECL is a probability-weighted estimate measured at the present value of all cash shortfalls including the impact of forward-looking information. Hudbay has established a provision based on the Company's historical credit loss experience, adjusted for forward-looking factors specific to the debtors and the economic environment. The loss allowance is presented as a deduction to trade receivables in the balance sheets. vi. Hudbay derecognizes financial assets when the contractual rights to the cash flows from the assets expire, or when the Company transfers the rights to receive the contractual cash flows on the financial assets in a transaction in which substantially all the risks and rewards of ownership of the financial asset are transferred. Any interest in the transferred financial assets that is created or retained by Hudbay is recognized as a separate asset or liability. Hudbay derecognizes financial liabilities when its contractual obligations are discharged, cancelled or expire or when its terms are modified and the cash flows of the modified liability are substantially different.
Taxation [Policy Text Block]	(o) Taxation: Current Tax Current income tax assets and liabilities for the current and prior periods are measured at the amount expected to be recovered from or paid to the taxation authorities. The tax rates and tax laws used to compute the amount are those that are enacted or substantively enacted by the balance sheet date. Hudbay is subject to income taxes in numerous jurisdictions. Significant judgement is required in determining the worldwide provision for income taxes due to the complexity of legislation. There are many transactions and calculations for which the ultimate tax determination is uncertain during the ordinary course of business. The Company recognizes liabilities for anticipated tax issues based on estimates of whether additional taxes will be due. Where the final tax outcome of these matters is different from the amounts that were initially recorded, such differences will affect the income tax and deferred tax provisions in the period in which such determination is made. Additionally, future changes in tax laws in the jurisdictions in which Hudbay operates could limit the ability of the Company to obtain tax deductions in future periods. Deferred Tax Deferred tax is recognized using the balance sheet method in respect of temporary differences at the balance sheet date between the tax basis of assets and liabilities, and their carrying amounts for financial reporting purposes. Deferred income tax liabilities are recognized for all taxable temporary differences, except: - - Deferred income tax assets are recognized for all deductible temporary differences, carry-forward of unused tax assets and unused tax losses, to the extent that it is probable that taxable profit will be available against which the deductible temporary differences, and the carry-forward of unused tax assets and unused tax losses can be utilized, except: - - To the extent that it is probable that taxable profit will be available to offset the deductible temporary differences, Hudbay recognizes the deferred tax asset regarding the temporary difference on decommissioning, restoration and similar liabilities and recognizes the corresponding deferred tax liability regarding the temporary difference on the related assets. The carrying amount of deferred income tax assets is reviewed at each balance sheet date and reduced to the extent that it is no longer probable that sufficient taxable profit will be available to allow all or part of the deferred income tax asset to be utilized. Unrecognized deferred income tax assets are reassessed at each balance sheet date and are recognized to the extent that it has become probable that future taxable profit will be available to allow the deferred tax asset to be recovered. Judgement is required in determining whether deferred tax assets are recognized on the consolidated balance sheets. Deferred tax assets, including those arising from unutilized tax losses, require management to assess the likelihood of taxable profit in future periods in order to utilize recognized deferred tax assets. Estimates of future taxable income are based on forecast cash flows from operations and the application of existing tax laws in each jurisdiction. To the extent that future cash flows and taxable income differ significantly from estimates, the ability to realize the net deferred tax assets recorded at the balance sheet date could be affected. Deferred tax is measured on an undiscounted basis at the tax rates that are expected to apply in the periods in which the asset is realized or the liability is settled, based on tax rates and tax laws enacted or substantively enacted at the balance sheet date. Deferred income tax assets and deferred income tax liabilities are offset if a legally enforceable right exists to offset current tax assets against current tax liabilities and the deferred income taxes relate to the same taxable entity and the same taxation authority. Current and deferred taxes relating to items recognized outside profit or loss (whether in other comprehensive income or directly in equity) are recognized outside profit or loss and not in the consolidated income statements. Mining taxes and royalties are treated and disclosed as current and deferred taxes if they have the characteristics of an income tax.
Share capital and reserves [Policy Text Block]	(p) Transaction costs Transaction costs directly attributable to equity transactions are recognized as a deduction from equity. Other capital reserve The other capital reserve is used for equity-settled share-based compensation and includes amounts for stocks options granted and not exercised. Foreign currency translation reserve The foreign currency translation reserve is used to record exchange differences arising from the translation of the financial statements of foreign operations. Exchange differences arising from the translation of the financial statements of foreign operations form part of the net investment in the foreign operation. Translation gains and losses remain in the reserve until disposal of all or a portion of the foreign operation.
Share-based payments [Policy Text Block]	(q) Share-based compensation: Hudbay compensates its employees in part through the use of a Deferred Share Unit ("DSU") plan for non-employee members of the Board of Directors, a Restricted Share Unit ("RSU") plan for employees, a Performance Share Unit ("PSU") plan for employees and a stock option plan for employees. These plans are included in provisions on the consolidated balance sheets and further described in note 23. Changes in the fair value of the liabilities are recorded in the consolidated income statements. Cash-settled transactions, consisting of DSUs, RSUs and PSUs, are initially measured at fair value and recognized as an obligation at the grant date. The liabilities are remeasured to fair value at each reporting date up to and including the settlement date, with changes in fair value recognized in the consolidated income statements. Hudbay values the liabilities based on the change in the Company's share price. Additional DSUs, RSUs and PSUs are credited to reflect dividends paid on Hudbay common shares over the vesting period. The current portion of the liability reflects those grants that have vested or that are expected to vest within twelve months. DSUs vest on the grant date and are redeemable when a participant is no longer a member of the Board of Directors. Issue and redemption prices of DSUs are based on the average closing price of the Company's common shares for the five trading days prior to issuance or redemption. RSUs and PSUs are issued under Hudbay's Long Term Equity Plan ("LTEP Plan") and vest on or before December 31st of the third calendar year after the year in which the services corresponding to such share unit award were performed. RSUs and PSUs granted under the LTEP Plan may be settled in the form of the Company's common shares or, at the option of Hudbay, the cash equivalent based on the market price of the common shares as of the vesting date. Hudbay has historically settled RSUs in cash. Except in specified circumstances, RSUs and PSUs terminate when an employee ceases to be employed by the Company. Valuations of RSUs and PSUs reflect estimated forfeitures. Equity-settled transactions with employees relate to stock options and are measured by reference to the fair value at the earlier of the grant date and the date that the employee unconditionally became entitled to the award. Fair value is determined using a Black-Scholes option pricing model, which relies on estimates of the future risk-free interest rate, future dividend payments, future share price volatility and the expected average life of the options. Hudbay believes this model adequately captures the substantive features of the option awards and is appropriate to calculate their fair values. The fair value determined at the grant date is recognized over the vesting period in accordance with vesting terms and conditions, with a corresponding increase to other capital reserves. The amount recognized as an expense is adjusted to reflect the number of awards for which the related service and non-market vesting conditions are expected to be met.
Earnings per share [Policy Text Block]	(r) Earnings per share: The Company presents basic and diluted earnings (loss) per share ("EPS") data for its common shares. Basic EPS is calculated by dividing the profit or loss attributable to common shareholders of the Company by the weighted average number of common shares outstanding during the period. Diluted EPS is determined by adjusting the profit or loss attributable to common shareholders and the weighted average number of common shares outstanding for the effects of all dilutive potential common shares, which previously consisted of stock options granted to employees and warrants. When calculating earnings per share for periods where the Company has a loss, Hudbay's calculation of diluted earnings per share excludes any incremental shares from the assumed conversion of stock options as they would be anti-dilutive.
Leases [Policy Text Block]	(s) Leases: Leases, under which substantially all the risks and rewards incidental to ownership of the leased item are transferred to Hudbay, are capitalized as assets at the inception of the lease at the lower of fair value or the present value of the minimum lease payments. Lease payments are apportioned between finance charges and the reduction of the liability so as to achieve a constant periodic rate of interest on the remaining balance of the liability. Finance charges are reflected in the consolidated income statements as finance costs. Non-ROU lease payments are recognized as an expense in the consolidated income statements on a straight-line basis over the lease term.
Segment reporting [Policy Text Block]	(t) Segment reporting: An operating segment is a component of the Company that engages in business activities from which it may earn revenue and incur expenses and for which discrete financial information is available. Hudbay's chief executive officer regularly reviews the operating results of each operating segment to make decisions about resources to be allocated to the segment and assess its performance. In determining operating segments, Hudbay considers location and decision-making authorities. Refer to note 30.
Statements of cash flows [Policy Text Block]	(u) Statement of cash flows: Hudbay presents interest paid and dividends paid as financing activities, except if the interest is related to capitalized borrowing costs, and interest received is presented as an investing activity in the consolidated statement of cash flow. Hudbay presents the consolidated statement of cash flows using the indirect method.

Revenue and expenses (Tables)

Revenue and expenses (Tables)	12 Months Ended
	Dec. 31, 2021
Analysis of income and expense [abstract]
Disclosure of detailed information about revenue [Table Text Block]	Year ended 2021 2020 Copper $ 873,339 $ 563,910 Zinc 301,086 264,106 Gold 246,562 180,949 Silver 26,932 25,986 Molybdenum 37,487 25,627 Other 7,454 5,619 Revenue from contracts 1,492,860 1,066,197 Non-cash streaming arrangement items 1 Amortization of deferred revenue - gold 37,788 27,854 Amortization of deferred revenue - silver 33,731 39,409 Amortization of deferred revenue - variable 1,617 6,668 73,136 73,931 Pricing and volume adjustments 2 (8,568 ) 9,178 1,557,428 1,149,306 Treatment and refining charges (55,430 ) (56,888 ) $ 1,501,998 $ 1,092,418
Disclosure of depreciation and amortization expense [Table Text Block]	Year ended 2021 2020 Cost of sales $ 357,924 $ 361,827 Selling and administrative expenses 1,843 1,776 $ 359,767 $ 363,603
Disclosure of detailed information about share-based compensation expenses (recoveries) [Table Text Block]	Cash-settled Total share-based RSUs DSUs PSUs Stock options Year ended December 31, 2021 Cost of sales $ 1,347 $ - $ - $ - $ 1,347 Selling and administrative 3,668 1,459 3,382 1,919 10,428 Other expenses 370 - - - 370 $ 5,385 $ 1,459 $ 3,382 $ 1,919 $ 12,145 Year ended December 31, 2020 Cost of sales $ 1,400 $ - $ - $ - $ 1,400 Selling and administrative 4,872 5,149 1,987 $ 1,122 13,130 Other expenses 478 - - - 478 $ 6,750 $ 5,149 $ 1,987 $ 1,122 $ 15,008
Disclosure of detailed information about employee benefits expense [Table Text Block]	Year ended December 31, 2021 2020 Current employee benefits $ 205,402 $ 179,486 Share-based compensation (notes 5d, 18, 23) Equity settled stock options 1,919 1,122 Cash-settled restricted share units 5,385 6,750 Cash-settled deferred share units 1,459 5,149 Cash-settled performance share units 3,382 1,987 Employee share purchase plan 1,933 1,783 Post-employee pension benefits Defined benefit plans 11,433 11,671 Defined contribution plans 2,061 1,774 Past service costs (note 19) 4,989 - Other post-retirement employee benefits 7,526 9,305 Termination benefits 470 582 $ 245,959 $ 219,609
Disclosure of detailed information about other operating expense [Table Text Block]	Year ended December 31, 2021 2020 Regional costs $ 3,652 $ 3,602 Loss on disposal of property, plant and equipment 7,038 5,088 Closure cost adjustment - non-producing properties (4,602 ) 2,721 Allocation of community costs 1,768 2,880 Restructuring - Manitoba 6,947 - Copper World Preliminary Economic Assessment ("PEA") study costs 12,555 - Other 2,421 3,292 $ 29,779 $ 17,583
Disclosure of detailed information about finance income and expenses [Table Text Block]	Year ended December 31, 2021 2020 Net interest expense on long-term debt Interest expense on long-term debt $ 74,748 $ 82,712 Accretion on streaming arrangements (note 17) Additions 42,060 60,362 Variable consideration adjustments - prior periods 594 (3,692 ) 42,654 56,670 Change in fair value of financial assets and liabilities at fair value through profit or loss Embedded derivatives (note 16) 49,754 (45,387 ) Gold prepayment liability 293 20,141 Investments 4,467 (4,124 ) 54,514 (29,370 ) Other net finance costs Net foreign exchange losses (gains) 1,403 (1,644 ) Accretion on community agreements measured at amortized cost 2,811 3,641 Accretion on environmental provisions 4,988 3,543 Withholding taxes 7,727 8,267 Premium paid on redemption of notes (note 16) 22,878 7,252 Write-down of unamortized transaction costs (note 16) 2,480 3,817 Other finance expense 7,813 8,826 Interest income (997 ) (1,812 ) 49,103 31,890 Net finance expense $ 221,019 $ 141,902

Trade and other receivables (Ta

Trade and other receivables (Tables)	12 Months Ended
	Dec. 31, 2021
Trade and other receivables [abstract]
Disclosure of detailed information about trade and other receivables [Table Text Block]	Dec. 31, 2021 Dec. 31, 2020 Current Trade receivables $ 166,524 $ 107,787 Statutory receivables 31,191 28,445 Other receivables 6,366 4,967 204,081 141,199 Non-current Taxes receivable 16,084 16,941 Other receivables - 1,627 16,084 18,568 $ 220,165 $ 159,767

Inventories (Tables)

Inventories (Tables)	12 Months Ended
	Dec. 31, 2021
Disclosure Of Inventories [Abstract]
Disclosure of detailed information about inventories [Table Text Block]	Dec. 31, 2021 Dec. 31, 2020 Current Stockpile $ 12,768 $ 13,906 Work in progress 5,647 6,364 Finished goods 78,958 72,923 Materials and supplies 61,080 49,912 158,453 143,105 Non-current Stockpile 34,156 16,704 Materials and supplies 3,417 5,302 37,573 22,006 $ 196,026 $ 165,111

Other financial assets (Tables)

Other financial assets (Tables)	12 Months Ended
	Dec. 31, 2021
Disclosure of financial assets [abstract]
Disclosure of detailed information about other financial assets [Table Text Block]	Dec. 31, 2021 Dec. 31, 2020 Current Derivative assets $ 7,430 $ 2,736 Restricted cash 437 337 7,867 3,073 Non-current Investments at fair value through profit or loss 11,158 15,669 $ 19,025 $ 18,742

Intangibles and other assets (T

Intangibles and other assets (Tables)	12 Months Ended
	Dec. 31, 2021
Disclosure of detailed information about intangible assets [abstract]
Disclosure of detailed information about intangible assets [Table Text Block]	Dec. 31, 2021 Dec. 31, 2020 Cost Balance, beginning of year $ 23,350 $ 21,538 Additions 968 1,466 Disposals - - Transfers 386 - Effects of movement in exchange rates 64 346 Balance, end of year 24,768 23,350 Accumulated amortization Balance, beginning of year 17,941 16,511 Additions 872 1,138 Disposals - - Effects of movement in exchange rates 57 292 Balance, end of year 18,870 17,941 Intangibles, net book value $ 5,898 $ 5,409

Property, plant and equipment (

Property, plant and equipment (Tables)	12 Months Ended
	Dec. 31, 2021
Disclosure of detailed information about property, plant and equipment [abstract]
Disclosure of detailed information about property, plant and equipment [Table Text Block]	Dec. 31, 2021 Exploration and evaluation assets Capital works in progress Mining properties Plant and equipment Plant and equipment- ROU assets 1 Total Balance, Jan. 1, 2021 $ 79,059 $ 957,162 $ 2,217,461 $ 2,793,719 $ 214,303 $ 6,261,704 Additions 9,084 268,090 1,731 17,735 49,695 346,335 Capitalized stripping and development - - 79,426 - - 79,426 Decommissioning and restoration - (525 ) 4,630 139,911 - 144,016 Transfers and other movements - (357,381 ) 128,320 229,981 (920 ) - Disposals - (5,941 ) - (10,803 ) (3,544 ) (20,288 ) Impairment - - (1,054 ) (192,419 ) - (193,473 ) Effects of movements in exchange rates 64 (3,175 ) 3,486 5,795 192 6,362 Balance, Dec. 31, 2021 88,207 858,230 2,434,000 2,983,919 259,726 6,624,082 Accumulated depreciation Balance, Jan. 1, 2021 - - 1,126,274 1,271,581 132,194 2,530,049 Depreciation for the year - - 155,878 181,565 24,536 361,979 Disposals - - - (8,525 ) (3,158 ) (11,683 ) Effects of movement in exchange rates - - 2,217 501 53 2,771 Balance, Dec. 31, 2021 - - 1,284,369 1,445,122 153,625 2,883,116 Net book value $ 88,207 $ 858,230 $ 1,149,631 $ 1,538,797 $ 106,101 $ 3,740,966 Dec. 31, 2020 Exploration and evaluation assets Capital works in progress Mining properties Plant and equipment Plant and equipment- ROU assets 1 Total Balance, January 1, 2020 $ 69,903 $ 733,874 $ 2,146,583 $ 2,653,752 $ 201,972 $ 5,806,084 Additions 809 256,251 311 28,523 17,759 303,653 Capitalized stripping and development - - 83,137 - - 83,137 Decommissioning and restoration - 263 6,849 39,680 - 46,792 Transfers and other movements 8,040 (36,668 ) (41,256 ) 70,777 (893 ) - Disposals - - - (19,681 ) (5,884 ) (25,565 ) Effects of movements in exchange rates 307 3,442 21,837 20,668 1,349 47,603 Balance, Dec. 31, 2020 79,059 957,162 2,217,461 2,793,719 214,303 6,261,704 Accumulated depreciation Balance, January 1, 2020 - - 963,530 1,069,687 110,308 2,143,525 Depreciation for the year - - 146,113 200,632 23,351 370,096 Disposals - - - (14,038 ) (2,475 ) (16,513 ) Effects of movement in exchange rates - - 16,631 15,300 1,010 32,941 Balance, Dec. 31, 2020 - - 1,126,274 1,271,581 132,194 2,530,049 Net book value $ 79,059 $ 957,162 $ 1,091,187 $ 1,522,138 $ 82,109 $ 3,731,655

Trade and other payables (Table

Trade and other payables (Tables)	12 Months Ended
	Dec. 31, 2021
Trade and other payables [abstract]
Disclosure of detailed information about trade and other payables [Table Text Block]	Dec. 31, 2021 Dec. 31, 2020 Trade payables $ 84,279 $ 104,598 Accruals and payables 84,992 72,698 Accrued interest 16,120 30,766 Exploration and evaluation payables 3,788 1,351 Statutory payables 18,598 23,734 $ 207,777 $ 233,147

Other liabilities (Tables)

Other liabilities (Tables)	12 Months Ended
	Dec. 31, 2021
Miscellaneous current liabilities [abstract]
Disclosure of detailed information about other current liabilities [Table Text Block]	Dec. 31, 2021 Dec. 31, 2020 Current Environmental and other provisions (note 18) $ 41,017 $ 33,675 Pension liability (note 19) 10,472 13,552 Other employee benefits (note 20) 3,530 3,154 Unearned revenue 7,983 1,590 $ 63,002 $ 51,971

Other financial liabilities (Ta

Other financial liabilities (Tables)	12 Months Ended
	Dec. 31, 2021
Disclosure of financial liabilities [abstract]
Disclosure of detailed information about other financial liabilities [Table Text Block]	Dec. 31, 2021 Dec. 31, 2020 Current Derivative liabilities $ 12,451 $ 15,312 Deferred Rosemont acquisition consideration 9,713 - Gold prepayment liability 71,394 - Agreements with communities recorded at amortized cost 7,144 9,401 100,702 24,713 Non-current Deferred Rosemont acquisition consideration 17,805 25,961 Gold prepayment liability 68,614 137,031 Wheaton refund liability (note 17) 5,424 - Agreements with communities recorded at amortized cost 29,129 31,386 120,972 194,378 $ 221,674 $ 219,091
Disclosure of detailed information about changes in other financial liabilities at amortized cost [Table Text Block]	Balance, January 1, 2020 $ 24,000 Net additions 116,233 Disbursements (98,375 ) Accretion 3,641 Effects of changes in foreign exchange (4,712 ) Balance, December 31, 2020 $ 40,787 Net additions 22,796 Disbursements (26,511 ) Accretion 2,811 Effects of changes in foreign exchange (3,610 ) Balance, December 31, 2021 $ 36,273

Lease Liability (Tables)

Lease Liability (Tables)	12 Months Ended
	Dec. 31, 2021
Lease liabilities [abstract]
Disclosure of detailed information about leasing activities for lessee [Table Text Block]	Balance, January 1, 2020 $ 81,947 Additional capitalized leases 17,759 Lease payments (35,980 ) Accretion and other movements (212 ) Balance, December 31, 2020 $ 63,514 Additional capitalized leases 49,695 Lease payments (37,719 ) Accretion and other movements 1 2,512 Balance, December 31, 2021 $ 78,002 Dec. 31, 2021 Dec. 31, 2020 Current $ 33,529 $ 33,473 Non-current 44,473 30,041 $ 78,002 $ 63,514
Disclosure of detailed information about expenses recognized to leases for which exemption applied [Table Text Block]	Year ended December 31, 2021 2020 Short-term leases $ 38,092 $ 40,253 Low value leases 407 353 Variable leases 58,626 57,389 Total $ 97,125 $ 97,995

Long-term debt (Tables)

Long-term debt (Tables)	12 Months Ended
	Dec. 31, 2021
Disclosure of detailed information about borrowings [line items]
Disclosure of borrowings [Table Text Block]	Dec. 31, 2021 Dec. 31, 2020 Senior unsecured notes (a) $ 1,185,805 $ 1,139,695 Less: Unamortized transaction costs - (5,531 ) (4,020 ) $ 1,180,274 $ 1,135,675
Senior unsecured notes [Member]
Disclosure of detailed information about borrowings [line items]
Disclosure of detailed information about borrowings [Table Text Block]	Balance, January 1, 2020 $ 991,558 Addition to Principal, net of $8,176 transaction costs 591,824 Principal repayments (400,000 ) Change in fair value of embedded derivative (prepayment option) (47,169 ) Write-down of unamortized transaction costs 2,315 Accretion of transaction costs and premiums 1,167 Balance, December 31, 2020 $ 1,139,695 Addition to Principal, net of $8,078 transaction costs 591,922 Principal repayments (600,000 ) Write-down of fair value of embedded derivative (prepayment option) 49,754 Write-down of unamortized transaction costs 2,480 Accretion of transaction costs and premiums 1,954 Balance, December 31, 2021 $ 1,185,805
Unamortized transaction costs - revolving credit facilities [Member]
Disclosure of detailed information about borrowings [line items]
Disclosure of detailed information about unamortized transaction costs revolving credit facilities [Table Text Block]	Balance, January 1, 2020 $ 6,303 Accretion of transaction costs (3,062 ) Write-down of unamortized transaction costs (1,502 ) Transaction costs 2,281 Balance, December 31, 2020 $ 4,020 Accretion of transaction costs (2,816 ) Transaction costs 4,327 Balance, December 31, 2021 1 $ 5,531

Deferred revenue (Tables)

Deferred revenue (Tables)	12 Months Ended
	Dec. 31, 2021
Disclosure Of Deferred Revenue [Abstract]
Disclosure of detailed information about changes in deferred revenue [Table Text Block]	Balance, January 1, 2020 $ 563,756 Amortization of deferred revenue Liability drawdown (67,263 ) Variable consideration adjustments - prior periods (6,668 ) Accretion on streaming arrangements Current year additions 60,362 Variable consideration adjustments - prior periods (3,692 ) Effects of changes in foreign exchange 189 Balance, December 31, 2020 $ 546,684 Amortization of deferred revenue Liability drawdown (71,519 ) Variable consideration adjustments - prior periods (1,617 ) Accretion on streaming arrangements (note 5g) Current year-to-date additions 42,060 Variable consideration adjustments - prior periods 594 Reclass of refund liability (note 14) (5,424 ) Stream deposit 4,000 Effects of changes in foreign exchange 548 Balance, December 31, 2021 $ 515,326
Disclosure of detailed information about deferred revenue [Table Text Block]	Dec. 31, 2021 Dec. 31, 2020 Current $ 88,963 $ 102,782 Non-current 426,363 443,902 $ 515,326 $ 546,684

Environmental and other provi_2

Environmental and other provisions (Tables)	12 Months Ended
	Dec. 31, 2021
Disclosure of other provisions [abstract]
Disclosure of detailed information about changes in provisions [Table Text Block]	Decommis-sioning, restoration and similar liabilities Deferred share units (note 23a) Restricted share units 1 (note 23a) Performan-ce share units (note 23a) Other 2 Total Balance, January 1, 2021 $ 343,132 $ 8,719 $ 10,449 $ 2,030 $ 1,144 $ 365,474 Net additional provisions made 172,023 1,233 5,523 2,993 9,182 190,954 Disbursements (21,663 ) (2,053 ) (6,143 ) - (5 ) (29,864 ) Unwinding of discount (note 5g) 4,988 - - - - 4,988 Effect of change in estimate to 3 (23,173 ) - - - - (23,173 ) Effect of change in discount rate (9,982 ) - - - - (9,982 ) Effect of foreign exchange 2,475 (18 ) 316 (10 ) (1 ) 2,762 Effect of change in share price - 226 744 389 - 1,359 Balance, December 31, 2021 $ 467,800 $ 8,107 $ 10,889 $ 5,402 $ 10,320 $ 502,518 Decommis-sioning, restoration and similar liabilities Deferred share units (note 23a) Restricted share units 1 Performan-ce share units (note 23a) Other Total Balance, January 1, 2020 $ 302,116 $ 3,876 $ 5,477 $ - $ 2,956 $ 314,425 Net additional provisions made 5,868 1,628 3,642 1,257 15 12,410 Disbursements (18,737 ) (497 ) (2,646 ) - (1,824 ) (23,704 ) Unwinding of discount (note 5g) 3,543 - - - - 3,543 Effect of change in discount rate 43,180 - - - - 43,180 Effect of foreign exchange 7,162 191 116 43 (3 ) 7,509 Effect of change in share price - 3,521 3,860 730 - 8,111 Balance, December 31, 2020 $ 343,132 $ 8,719 $ 10,449 $ 2,030 $ 1,144 $ 365,474
Disclosure of detailed information about provisions [Table Text Block]	December 31, 2021 Decommis-sioning, restoration and similar liabilities Deferred share units (note 23a) Restricted share units 1 (note 23a) Performan-ce share units (note 23a) Other Total Current (note 13) $ 16,759 $ 8,107 $ 5,061 $ 4,622 $ 6,468 $ 41,017 Non-current 451,041 - 5,828 780 3,852 461,501 $ 467,800 $ 8,107 $ 10,889 $ 5,402 $ 10,320 $ 502,518 December 31, 2020 Decommis-sioning, restoration and similar liabilities Deferred share units (note 23a) Restricted share units 1 Performan-ce share units (note 23a) Other Total Current (note 13) $ 20,308 $ 8,719 $ 4,648 $ - $ - $ 33,675 Non-current 322,824 - 5,801 2,030 1,144 331,799 $ 343,132 $ 8,719 $ 10,449 $ 2,030 $ 1,144 $ 365,474

Pension obligations (Tables)

Pension obligations (Tables)	12 Months Ended
	Dec. 31, 2021
Pension Obligations [Abstract]
Disclosure of additional information about defined benefit plans [Table Text Block]	Year ended Dec. 31, 2021 Dec. 31, 2020 Opening defined benefit obligation: $ 240,354 $ 243,733 Current service costs 11,295 11,044 Past service cost (note 5e) 4,989 - Interest cost 6,172 6,569 Benefits paid from plan (22,546 ) (35,384 ) Benefits paid from employer (866 ) (1,317 ) Participant contributions 34 48 Effects of movements in exchange rates 950 2,780 Remeasurement actuarial losses/(gains): Arising from changes in demographic assumptions 1,498 (1,461 ) Arising from changes in financial assumptions (24,663 ) 16,967 Arising from experience adjustments (848 ) (2,625 ) Closing defined benefit obligation $ 216,369 $ 240,354
Disclosure of detailed information about defined benefit plans, balance by member group [Table Text Block]	Dec. 31, 2021 Dec. 31, 2020 Active members $ 176,644 $ 211,861 Deferred members 2,538 2,198 Retired members 37,187 26,295 Closing defined benefit obligation $ 216,369 $ 240,354
Disclosure of detailed information about changes in fair value of plan assets [Table Text Block]	Year ended Dec. 31, 2021 Dec. 31, 2020 Opening fair value of plan assets: $ 203,486 $ 202,119 Interest income 5,387 5,695 Remeasurement adjustment: (Loss) return on plan assets (excluding amounts included in net interest expense) (306 ) 15,377 Contributions from the employer 12,750 12,987 Employer direct benefit payments 866 1,317 Contributions from plan participants 34 48 Benefit payment from employer (866 ) (1,317 ) Administrative expenses paid from plan assets (83 ) (77 ) Benefits paid (22,546 ) (35,384 ) Effects of changes in foreign exchange rates 923 2,721 Closing fair value of plan assets $ 199,645 $ 203,486
Disclosure of detailed information about net defined benefit liability (asset) [Table Text Block]	Dec. 31, 2021 Dec. 31, 2020 Present value of funded defined benefit obligation $ 197,546 $ 220,210 Fair value of plan assets (199,645 ) (203,486 ) Present value of unfunded defined benefit obligation 18,823 20,144 Net liability arising from defined benefit obligation $ 16,724 $ 36,868
Disclosure of detailed information about pension obligation [Table Text Block]	Dec. 31, 2021 Dec. 31, 2020 Pension obligation - current (note 13) $ 10,472 $ 13,552 Pension obligation - non-current 6,252 23,316 Total pension obligation $ 16,724 $ 36,868
Disclosure of detailed information about pension expense [Table Text Block]	Dec. 31, 2021 Dec. 31, 2020 Service costs: Current service cost $ 11,295 $ 11,044 Past service cost 4,989 - Total service cost 16,284 11,044 Net interest expense 785 874 Administration cost 83 77 Defined benefit pension expense $ 17,152 $ 11,995 Defined contribution pension expense $ 2,061 $ 1,791
Disclosure of detailed information about remeasurement on the net defined benefit liability [Table Text Block]	Dec. 31, 2021 Dec. 31, 2020 Loss (return) on plan assets (excluding amounts included in net interest expense) $ 306 $ (15,377 ) Actuarial losses (gains) arising from changes in demographic assumptions 1,498 (1,461 ) Actuarial (gains) losses arising from changes in financial assumptions (24,663 ) 16,967 Actuarial gains arising from experience adjustments (848 ) (2,625 ) Defined benefit gain related to remeasurement $ (23,707 ) $ (2,496 ) Total pension cost $ (4,494 ) $ 11,290
Disclosure of detailed information about defined benefit plan, assumptions used [Table Text Block]	2021 2020 Defined benefit cost: Discount rate - benefit obligations 2.54 % 3.08% Discount rate - service cost 2.66 % 3.10% Expected rate of salary increase 1 2.75 % 2.75% Average longevity at retirement age for current pensioners (years) 2 Males 20.3 20.3 Females 23.7 23.7 Defined benefit obligation: Discount rate 3.09 % 2.54% Expected rate of salary increase 1 2.75 % 2.75% Average longevity at retirement age for current pensioners (years) 2 Males 20.4 20.3 Females 23.7 23.7 Average longevity at retirement age for current employees (future pensioners) (years) 2 Males 22.2 22.2 Females 25.4 25.4
Disclosure of fair value of plan assets [Table Text Block]	December 31, 2021 Level 1 Level 2 Level 3 Total Investments: Money market instruments $ 2,045 $ - $ - $ 2,045 Pooled equity funds 78,092 - - 78,092 Pooled fixed income funds - 97,229 - 97,229 Alternative investment funds - 21,983 - 21,983 Balanced funds - 296 - 296 $ 80,137 $ 119,508 $ - $ 199,645 December 31, 2020 Level 1 Level 2 Level 3 Total Investments: Money market instruments $ 4,766 $ - $ - $ 4,766 Pooled equity funds 68,926 - - 68,926 Pooled fixed income funds - 98,922 - 98,922 Alternative investment funds - 30,323 - 30,323 Balanced funds - 549 - 549 $ 73,692 $ 129,794 $ - $ 203,486

Other employee benefits (Tables

Other employee benefits (Tables)	12 Months Ended
	Dec. 31, 2021
Other Employee Benefits [Abstract]
Disclosure of detailed information about other employee benefit plans [Table Text Block]	Year ended Dec. 31, 2021 Dec. 31, 2020 Opening defined benefit obligation $ 129,616 $ 116,696 Current service cost 1 3,861 4,140 Past service cost 134 - Interest cost 3,531 3,478 Effects of movements in exchange rates 639 2,423 Remeasurement actuarial losses/(gains): Arising from changes in demographic assumptions 2,601 (4,460 ) Arising from changes in financial assumptions (7,309 ) 10,043 Arising from experience adjustments (1,034 ) (489 ) Benefits paid (3,196 ) (2,215 ) Closing defined benefit obligation $ 128,843 $ 129,616
Disclosure of detailed information about other employee benefit plans, balance by member group [Table Text Block]	Dec. 31, 2021 Dec. 31, 2020 Active members $ 57,775 $ 68,983 Inactive members 71,068 60,633 Closing defined benefit obligation $ 128,843 $ 129,616
Disclosure of detailed information about changes in fair value of assets of other employee benefits plan [Table Text Block]	Dec. 31, 2021 Dec. 31, 2020 Employer contributions $ 3,196 $ 2,215 Benefits paid (3,196 ) (2,215 ) Closing fair value of assets $ - $ -
Disclosure of detailed information about net benefit liability for other employee benefits [Table Text Block]	Dec. 31, 2021 Dec. 31, 2020 Unfunded benefit obligation $ 128,843 $ 129,616 Vacation accrual and other - non-current 3,275 3,046 Net liability $ 132,118 $ 132,662
Disclosure of detailed information about other employee benefits plan [Table Text Block]	Dec. 31, 2021 Dec. 31, 2020 Other employee benefits liability - current (note 13) $ 3,530 $ 3,154 Other employee benefits liability - non-current 128,588 129,508 Net liability $ 132,118 $ 132,662
Disclosure of detailed information about employee future benefit expense [Table Text Block]	Dec. 31, 2021 Dec. 31, 2020 Current service cost 1 $ 3,995 $ 4,140 Net interest cost 3,531 3,478 Components recognized in consolidated income statements $ 7,526 $ 7,618
Disclosure of detailed information about remeasurement of other long term employee benefits [Table Text Block]	Dec. 31, 2021 Dec. 31, 2020 Remeasurement on the net defined benefit liability: Actuarial losses/(gains) arising from changes in demographic assumptions $ 2,601 $ (4,460 ) Actuarial (gains)/losses arising from changes in financial assumptions (7,309 ) 10,043 Actuarial gains arising from changes experience adjustments (1,034 ) (489 ) Components recognized in statements of comprehensive income $ (5,742 ) $ 5,094 Total other employee future benefit cost $ 1,784 $ 12,712
Disclosure of detailed information about other employee benefit plan, assumptions used [Table Text Block]	Dec. 31, 2021 Dec. 31, 2020 Defined benefit cost: Discount rate 2.76 % 3.17% Initial weighted average health care trend rate 5.66 % 5.68% Ultimate weighted average health care trend rate 4.00 % 4.00% Average longevity at retirement age for current pensioners (years) 1 Males 20.3 21.2 Females 23.7 23.9 Dec. 31, 2021 Dec. 31, 2020 Defined benefit obligation: Discount rate 3.30 % 2.76% Initial weighted average health care trend rate 6.00 % 5.66% Ultimate weighted average health care trend rate 4.00 % 4.00% Average longevity at retirement age for current pensioners (years) 1 Males 20.4 20.3 Females 23.7 23.7 Average longevity at retirement age for current employees (future pensioners) (years) 1 Males 22.3 22.2 Females 25.4 25.4

Income and mining taxes (Tables

Income and mining taxes (Tables)	12 Months Ended
	Dec. 31, 2021
Major components of tax expense (income) [abstract]
Disclosure of detailed information about effective income tax expense recovery [Table Text Block]	Year ended 2021 2020 Current: Income taxes $ 25,570 $ 4,458 Mining taxes 20,830 4,671 Adjustments in respect of prior years - (398 ) 46,400 8,731 Deferred: Income tax recoveries - origination, revaluation and/or reversal of temporary differences (17,772 ) (39,411 ) Mining tax expense (recoveries) - origination, revaluation and/or reversal of temporary difference 4,235 (3,331 ) Adjustments in respect of prior years 8,744 (494 ) (4,793 ) (43,236 ) $ 41,607 $ (34,505 )
Disclosure of detailed information about deferred taxes [Table Text Block]	Dec. 31, 2021 Dec. 31, 2020 Deferred income tax asset $ 133,584 $ 94,070 Deferred mining tax asset - 7,829 133,584 101,899 Deferred income tax liability (249,638 ) (220,568 ) Deferred mining tax liability (12,126 ) (8,865 ) (261,764 ) (229,433 ) Net deferred tax liability balance, end of year $ (128,180 ) $ (127,534 )
Disclosure of detailed information about changes in deferred tax assets and liabilities [Table Text Block]	Year ended Year ended Net deferred tax liability balance, beginning of year $ (127,534 ) $ (167,882 ) Deferred tax expense 4,793 43,236 OCI transactions (5,474 ) (759 ) Foreign currency translation on the deferred tax liability 35 (2,129 ) Net deferred tax liability balance, end of year $ (128,180 ) $ (127,534 )
Disclosure of detailed information about reconciliation to statutory tax rate [Table Text Block]	Year ended December 31, 2021 2020 Statutory tax rate 26.4% 26.3% Tax recovery at statutory rate $ (53,526 ) $ (47,047 ) Effect of: Deductions related to mining taxes (5,491 ) (1,369 ) Adjusted income taxes (59,017 ) (48,416 ) Mining tax expense 32,034 1,291 (26,983 ) (47,125 ) Permanent differences related to: Capital items 716 (160 ) Other income tax permanent differences 2,775 (1,165 ) Impact of remeasurement on decommissioning liability 33,731 7,094 Temporary income tax differences not recognized 4,483 1,100 Impact related to differences in tax rates in foreign operations 21,201 5,534 Impact of changes to statutory tax rates (706 ) 2,412 Foreign exchange on non-monetary items 4,593 (3,628 ) Impact related to tax assessments and tax return amendments 1,797 1,433 Tax expense (recovery) $ 41,607 $ (34,505 )
Disclosure of temporary differences recognized [Table Text Block]	Balance sheet Dec. 31, 2021 Dec. 31, Deferred income tax (liability) asset Property, plant and equipment $ (40,491 ) $ (88,368 ) Pension obligation 4,369 9,467 Other employee benefits 27,191 25,687 Decommissioning and restoration obligation 29,870 37,902 Non-capital losses 93,892 110,374 Share issuance and debt cost 17,984 8,972 Embedded derivative (prepayment option) - (13,137 ) Deferred revenue 1,661 (809 ) Other (892 ) 3,982 Deferred income tax asset 133,584 94,070 Deferred income tax liability (asset) Property, plant and equipment 322,325 292,858 Other employee benefits (654 ) 203 Asset retirement obligations (9,609 ) (1,588 ) Non-capital losses (58,777 ) (78,607 ) Other (3,647 ) 7,702 Deferred income tax liability 249,638 220,568 Deferred income tax liability $ (116,054 ) $ (126,498 )
Disclosure of detailed information about temporary differences - deferred mining tax assets and liabilities [Table Text Block]	Canada Dec. 31, 2021 Dec. 31, 2020 Property, plant and equipment $ (278 ) $ 7,829 Peru Dec. 31, 2021 Dec. 31, 2020 Property, plant and equipment $ (11,848 ) $ (8,865 )

Share capital (Tables)

Share capital (Tables)	12 Months Ended
	Dec. 31, 2021
Disclosure of classes of share capital [abstract]
Disclosure of detailed information about shares, activity [Table Text Block]	Year ended December 31, 2021 Year ended Common shares Amount Common shares Amount Balance, beginning of year 261,272,151 $ 1,777,340 261,272,151 $ 1,777,340 Exercise of options 326,161 1,508 — — Balance, end of year 261,598,312 $ 1,778,848 261,272,151 $ 1,777,340

Share-based compensation (Table

Share-based compensation (Tables)	12 Months Ended
	Dec. 31, 2021
Disclosure of terms and conditions of share-based payment arrangement [line items]
Disclosure of number and weighted average exercise prices of share options [Table Text Block]	Year ended Year ended Dec. 31, 2021 Dec. 31, 2020 Number of shares subject to option Weighted-average exercise price C$ Number of shares subject to option Weighted average exercise price C$ Balance, beginning of year 1,563,189 $ 3.77 - Number of units granted during the year 509,385 $ 10.42 1,581,385 $ 3.77 Exercised (326,161 ) $ 3.76 - $ - Forfeited (87,125 ) $ 5.79 (18,196 ) $ 3.76 Balance, end of year 1,659,288 $ 5.71 1,563,189 $ 3.77
Disclosure of fair value assumptions used in the black scholes valuation of share options explanatory [Table Text Block]	For options granted during the year ended Dec. 31, 2021 Dec. 31, 2020 Weighted average share price at grant date (CAD) $ 10.42 $ 3.77 Risk-free rate 1.02 % 1.14% Expected dividend yield 0.2 % 0.5% Expected stock price volatility (based on historical volatility) 60.5 % 57.0% Expected life of option (months) 84 84 Weighted average per share fair value of stock options granted (CAD) $ 6.06 $ 2.02
Disclosure of range of exercise prices of outstanding share options [Table Text Block]	Dec. 31, 2021 Range of Number of Weighted average Weighted Number of Weighted $3.76 - $3.92 1,176,399 5.15 $ 3.78 191,651 $ 3.79 $10.42 - $10.42 482,889 6.15 $ 10.42 - $ - Dec. 31, 2020 Range of Number of Weighted average Weighted Number of Weighted $3.76 - $3.92 1,156,189 6.15 $ 3.77 - $ -
Deferred Share Unit [Member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Disclosure of detailed information about number and weighted average exercise prices of other equity instruments [Table Text Block]	Year ended Dec. 31, 2021 Dec. 31, 2020 Granted during the year: Number of units 173,929 465,889 Weighted average price (C$/unit) $ 8.85 $ 4.10 Expenses recognized during the year 1 $ 1,459 $ 5,149 Payments made during the year (note 18) $ 2,053 $ 497
Restricted Share Unit [Member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Disclosure of detailed information about number and weighted average exercise prices of other equity instruments [Table Text Block]	Year ended Dec. 31, 2021 Dec. 31, 2020 Number of units, beginning of year 2,940,337 2,223,999 Number of units granted during the year 515,727 1,388,786 Credits for dividends 6,949 17,587 Number of units forfeited during the year (133,804 ) (44,678 ) Number of units vested (844,349 ) (645,357 ) Number of units, end of year 1 2,484,860 2,940,337 Weighted average price - granted (C$/unit) $ 10.42 $ 3.98 Expenses recognized during the year 2 $ 5,385 $ 6,750 Payments made during the year (note 18) $ 6,143 $ 2,646
Performance Share Unit [Member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Disclosure of detailed information about number and weighted average exercise prices of other equity instruments [Table Text Block]	Year ended Dec. 31, 2021 Dec. 31, 2020 Number of units, beginning of year 1,095,615 - Number of units granted during the year 406,656 1,089,569 Credits for dividends 3,960 6,046 Number of units, end of year 1,506,231 1,095,615 Weighted average price - granted (C$/unit) $ 10.42 $ 3.97 Expenses recognized during the year (note 5d) $ 3,382 $ 1,987 Payments made during the year (note 18) $ - $ -

Earnings per share (Tables)

Earnings per share (Tables)	12 Months Ended
	Dec. 31, 2021
Basic earnings per share [abstract]
Disclosure of earnings per share [Table Text Block]	Year ended Dec. 31, 2021 Dec. 31, 2020 Basic and diluted weighted average common shares outstanding 261,462,323 261,272,151

Financial instruments (Tables)

Financial instruments (Tables)	12 Months Ended
	Dec. 31, 2021
Disclosure of detailed information about financial instruments [abstract]
Disclosure of fair value measurement [Table Text Block]	Dec. 31, 2021 Dec. 31, 2020 FV CV FV CV Financial assets at amortized cost Cash 1 $ 270,989 $ 270,989 $ 439,135 $ 439,135 Restricted cash 1 437 437 337 337 Fair value through profit or loss Trade and other receivables 1, 2, 3 172,890 172,890 114,381 114,381 Non-hedge derivative assets 4 7,430 7,430 2,736 2,736 Investments 5 11,158 11,158 15,669 15,669 Total financial assets $ 462,904 $ 462,904 $ 572,258 $ 572,258 Financial liabilities at amortized cost Trade and other payables 1, 2 189,179 189,179 209,413 209,413 Deferred Rosemont acquisition consideration 8 27,518 27,518 25,961 25,961 Agreements with communities 6 33,947 36,273 41,912 40,787 Wheaton refund liability 10 5,424 5,424 - - Senior unsecured notes 7 1,239,018 1,185,805 1,277,124 1,139,695 Fair value through profit or loss Gold prepayment liability 9 140,008 140,008 137,031 137,031 Non-hedge derivative liabilities 4 12,451 12,451 15,312 15,312 Total financial liabilities $ 1,647,545 $ 1,596,658 $ 1,706,753 $ 1,568,199
Disclosure of detailed information about significant unobservable inputs used in fair value measurement of assets and liabilities [Table Text Block]	December 31, 2021 Level 1 Level 2 Level 3 Total Financial assets measured at fair value Financial assets at FVTPL: Non-hedge derivatives $ - $ 7,430 $ - $ 7,430 Investments 11,158 - - 11,158 $ 11,158 $ 7,430 $ - $ 18,588 Financial liabilities measured at fair value Financial liabilities at FVTPL: Non-hedge derivatives $ - $ 12,451 $ - $ 12,451 Gold prepayment liability - 140,008 - 140,008 Financial liabilities at amortized cost: Agreements with communities - - 33,947 33,947 Wheaton refund liability - - 5,424 5,424 Senior unsecured notes 1,239,018 - - 1,239,018 $ 1,239,018 $ 152,459 $ 39,371 $ 1,430,848 December 31, 2020 Level 1 Level 2 Level 3 Total Financial assets measured at fair value Financial assets at FVTPL: Non-hedge derivatives $ - $ 2,736 $ - $ 2,736 Investments 15,669 - - 15,669 $ 15,669 $ 2,736 $ - $ 18,405 Financial liabilities measured at fair value Financial liabilities at FVTPL: Non-hedge derivatives $ - $ 15,312 $ - $ 15,312 Gold prepayment liability - 137,031 - 137,031 Financial liabilities at amortized cost: Agreements with communities - - 41,912 41,912 Senior unsecured notes 1,277,124 - - 1,277,124 $ 1,277,124 $ 152,343 $ 41,912 $ 1,471,379
Disclosure of detailed information about net position of contracts awaiting final pricing [Table Text Block]	Metal in Sales awaiting final pricing Average YTD price ($/unit) Unit Dec. 31, 2021 Dec. 31, 2020 Dec. 31, 2021 Dec. 31, 2020 Copper pounds (in thousands) 75,681 47,901 4.42 3.52 Gold oz 27,304 18,106 1,828 1,894 Silver oz 125,800 123,380 23.33 26.35
Disclosure of detailed information about foreign currency risk [Table Text Block]	Dec. 31, 2021 Dec. 31, 2020 CAD 1 USD 2 PEN 3 CAD 1 USD 2 PEN 3 Cash $ 10,627 $ 34,439 $ 6,992 $ 7,791 $ 3,895 $ 4,141 Trade and other receivables 595 71,458 36,470 31 43,316 36,951 Other financial assets 11,158 - - 15,669 - - Trade and other payables (6,347 ) (3,001 ) (17,006 ) (6,104 ) (1,419 ) (34,622 ) Other financial liabilities - - (36,273 ) - - (40,787 ) $ 16,033 $ 102,896 $ (9,817 ) $ 17,387 $ 45,792 $ (34,317 )
Disclosure of detailed information about sensitivity analysis for foreign currency risk [Table Text Block]	December 31, 2021 Change of: Would have changed USD/CAD exchange rate 1 + 10% $ 4.8 million USD/CAD exchange rate 1 - 10% (5.7 ) million USD/PEN exchange rate 2 + 10% 0.6 million USD/PEN exchange rate 2 - 10% (0.7 ) million December 31, 2020 Change of: Would have changed USD/CAD exchange rate 1 + 10% $ 1.1 million USD/CAD exchange rate 1 - 10% (1.4 ) million USD/PEN exchange rate 2 + 10% 2.0 million USD/PEN exchange rate 2 - 10% (2.5 ) million
Disclosure of detailed information about commodity price risk [Table Text Block]	December 31, 2021 Change of: Would have changed Copper prices ($/lb) 1 + $0.30 $ 0.5 million Copper prices ($/lb) 1 - $0.30 (0.5 ) million Zinc prices ($/lb) 2 + $0.10 0.2 million Zinc prices ($/lb) 2 - $0.10 (0.2 ) million December 31, 2020 Change of: Would have changed Copper prices ($/lb) 1 + $0.30 $ (1.4 ) million Copper prices ($/lb) 1 - $0.30 1.4 million Zinc prices ($/lb) 2 + $0.10 0.3 million Zinc prices ($/lb) 2 - $0.10 (0.3 ) million
Disclosure of detailed information about share price risk [Table Text Block]	December 31, 2021 Change of: Would have changed 2021 Share prices + 25% $ 2.8 million Share prices - 25% (2.8 ) million December 31, 2020 Change of: Would have changed 2020 Share prices + 25% $ 3.9 million Share prices -25% (3.9 ) million
Disclosure of detailed information about interest rate risk [Table Text Block]	December 31, 2021 Change of: Would have changed Interest rates + 2.00% $ 5.4 million Interest rates - 2.00% (5.4 ) million December 31, 2020 Change of: Would have changed Interest rates + 2.00% $ (29.2 ) million Interest rates - 2.00% 39.7 million
Disclosure of detailed information about liquidity risk [Table Text Block]	Dec. 31, 2021 Carrying Contractual 12 months 13 - 36 37 - 60 More than Assets used to manage liquidity risk Cash $ 270,989 $ 270,989 $ 270,989 $ - $ - $ - Restricted cash 437 437 437 - - - Trade and other receivables 172,890 172,890 172,890 - - - Non-hedge derivative assets 7,430 7,430 7,430 - - - $ 451,746 $ 451,746 $ 451,746 $ - $ - $ - Non-derivative financial liabilities Trade and other payables, including embedded derivatives $ (189,179 ) $ (189,179 ) $ (189,179 ) $ - $ - $ - Agreements with communities 1 (36,273 ) (52,497 ) (9,282 ) (9,719 ) (5,220 ) (28,276 ) Deferred Rosemont acquisition consideration (27,518 ) (30,000 ) (10,000 ) (20,000 ) - - Long-term debt (1,185,805 ) (1,614,686 ) (68,348 ) (136,696 ) (717,767 ) (691,875 ) Gold prepayment obligation 2 (140,008 ) (140,008 ) (71,394 ) (68,614 ) - - Wheaton refund liability (5,424 ) (78,500 ) - - - (78,500 ) $ (1,584,207 ) $ (2,104,870 ) $ (348,203 ) $ (235,029 ) $ (722,987 ) $ (798,651 ) Derivative financial liabilities Non hedge derivative contracts $ (12,451 ) $ (12,451 ) $ (12,451 ) $ - $ - $ - $ (12,451 ) $ (12,451 ) $ (12,451 ) $ - $ - $ - Dec. 31, 2020 Carrying Contractual 12 months or 13 - 36 37 - 60 More than 60 Assets used to manage liquidity risk Cash $ 439,135 $ 439,135 $ 439,135 $ - $ - $ - Restricted cash 337 337 337 Trade and other receivables 114,381 114,381 114,381 - - - Non-hedge derivative assets 2,736 2,736 2,736 - - - $ 556,589 $ 556,589 $ 556,589 $ - $ - $ - Non-derivative financial liabilities Trade and other payables, including embedded derivatives $ (209,413 ) $ (209,413 ) $ (209,413 ) $ - $ - $ - Agreements with communities 1 (40,787 ) $ (58,837 ) (12,097 ) (9,483 ) (6,578 ) (30,679 ) Deferred Rosemont acquisition consideration (25,961 ) $ (30,000 ) - (20,000 ) (10,000 ) - Long-term debt, including embedded derivatives (1,139,695 ) $ (1,726,904 ) (87,966 ) (168,188 ) (742,125 ) (728,625 ) Gold prepayment obligation 2 (137,031 ) (137,031 ) - (137,031 ) - - $ (1,552,887 ) $ (2,162,185 ) $ (309,476 ) $ (334,702 ) $ (758,703 ) $ (759,304 ) Derivative financial liabilities Non-hedge derivative contracts $ (15,312 ) $ (15,312 ) $ (15,312 ) $ - $ - $ - $ (15,312 ) $ (15,312 ) $ (15,312 ) $ - $ - $ -

Commitments and contingencies (

Commitments and contingencies (Tables)	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements [Abstract]
Disclosure of maturity analysis of operating lease payments [Table Text Block]	2021 2020 Within one year $ 19,092 $ 58,173 After one year but not more than five years 2,631 2,192 More than five years - - $ 21,723 $ 60,365

Related parties (Tables)

Related parties (Tables)	12 Months Ended
	Dec. 31, 2021
Disclosure of transactions between related parties [abstract]
Disclosure of subsidiaries [Table Text Block]	Beneficial Name Jurisdiction Business Entity's Parent 2021 2020 HudBay Marketing & Sales Inc. Canada Marketing and sales HMI 100% 100% HudBay Peru Inc. British Columbia Holding company HMI 100% 100% HudBay Peru S.A.C. Peru Exploration/development Peru Inc. 100% 100% HudBay (BVI) Inc. British Virgin Islands Precious metals sales Peru Inc. 100% 100% Hudbay Arizona Inc. British Columbia Holding company HMI 100% 100% Rosemont Copper Company Arizona Exploration/development HudBay Arizona (US) Holding Corporation 100% 100%
Disclosure of information about key management personnel [Table Text Block]	2021 2020 Short-term employee benefits 1 $ 10,283 $ 7,951 Post-employment benefits 837 639 Long-term share-based awards 6,737 6,381 $ 17,857 $ 14,971

Supplementary cash flow infor_2

Supplementary cash flow information (Tables)	12 Months Ended
	Dec. 31, 2021
Supplementary Cash Flow Information [Abstract]
Disclosure of detailed information about other cash generated from / (used in) operating activities [Table Text Block]	Year ended 2021 2020 Loss on disposal of property, plant & equipment (note 5f) $ 7,038 $ 5,088 Closure cost adjustment - non-producing properties (note 5f) (4,602 ) 2,721 Share based compensation paid (6,782 ) (3,143 ) Pampacancha delivery obligation paid - (10,856 ) Restructuring - Manitoba (note 5f) 6,947 - Other 565 6,593 $ 3,166 $ 403
Disclosure of detailed information about supplemental cash flow information [Table Text Block]	Year ended 2021 2020 Change in: Trade and other receivables $ (60,978 ) $ (37,720 ) Other financial assets/liabilities (7,758 ) 4,077 Inventories (32,752 ) (2,867 ) Prepaid expenses 1,663 (3,722 ) Trade and other payables (11,549 ) 36,247 Provisions and other liabilities 7,328 1,602 $ (104,046 ) $ (2,383 )

Segmented information (Tables)

Segmented information (Tables)	12 Months Ended
	Dec. 31, 2021
Disclosure of operating segments [abstract]
Disclosure of segments [Table Text Block]	Year ended December 31, 2021 Manitoba Peru Arizona Corporate Total Revenue from external customers $ 740,454 $ 761,544 $ - $ - $ 1,501,998 Cost of sales Mine operating costs 459,399 360,183 - - 819,582 Depreciation and amortization 163,516 194,408 - - 357,924 Impairment - environmental obligation 193,473 - - - 193,473 Gross (loss) profit (75,934 ) 206,953 - - 131,019 Selling and administrative expenses - - - 43,011 43,011 Exploration and evaluation expenses 5,769 9,218 24,935 39 39,961 Other expenses (income) 10,620 10,491 13,399 (4,731 ) 29,779 Results from operating activities $ (92,323 ) $ 187,244 $ (38,334 ) $ (38,319 ) $ 18,268 Net interest expense on long term debt 74,748 Accretion on streaming arrangements 42,654 Change in fair value of financial instruments 54,514 Other net finance costs 49,103 Loss before tax (202,751 ) Tax expense 41,607 Loss for the year $ (244,358 ) Year ended December 31, 2020 Manitoba Peru Arizona Corporate Total Revenue from external customers $ 615,699 $ 476,719 $ - $ - $ 1,092,418 Cost of sales Mine operating costs 391,504 300,087 - - 691,591 Depreciation and amortization 177,552 184,275 - - 361,827 Gross profit (loss) 46,643 (7,643 ) - - 39,000 Selling and administrative expenses - - - 41,408 41,408 Exploration and evaluation expenses 6,491 6,295 3,870 540 17,196 Other expenses 8,382 4,901 2,066 2,234 17,583 Results from operating activities $ 31,770 $ (18,839 ) $ (5,936 ) $ (44,182 ) $ (37,187 ) Net interest expense on long term debt 82,712 Accretion on streaming arrangements 56,670 Change in fair value of financial instruments (29,370 ) Other net finance costs 31,890 Loss before tax (179,089 ) Tax recovery (34,505 ) Loss for the year $ (144,584 )
Disclosure of segments, assets and liabilities [Table Text Block]	December 31, 2021 Manitoba Peru Arizona Corporate Total Total assets $ 812,137 $ 2,624,251 $ 745,371 $ 434,472 $ 4,616,231 Total liabilities 655,095 1,023,186 75,782 1,385,340 3,139,403 Property, plant and equipment 1 706,330 2,256,687 735,127 42,822 3,740,966 December 31, 2020 Manitoba Peru Arizona Corporate Total Total assets $ 801,691 $ 2,535,939 $ 718,982 $ 610,033 $ 4,666,645 Total liabilities 562,013 973,756 76,926 1,354,144 2,966,839 Property, plant and equipment 1 699,884 2,290,097 709,939 31,735 3,731,655
Disclosure of segments, additions to property, plant and equipment [Table Text Block]	December 31, 2021 Manitoba Peru Arizona Corporate Total Additions to property, plant and equipment $ 224,300 $ 163,604 $ 25,982 $ 11,875 $ 425,761 December 31, 2020 Manitoba Peru Arizona Corporate Total Additions to property, plant and equipment $ 159,313 $ 208,805 $ 18,640 $ 32 $ 386,790
Disclosure of geographical areas, revenue by customer location [Table Text Block]	2021 2020 Revenue by customer location 1 Canada $ 515,967 $ 422,403 China 349,143 215,278 United States 219,853 206,906 Switzerland 166,261 55,703 Peru 82,598 56,437 Singapore 80,668 29,314 Germany 37,335 11,725 Japan 20,524 - Chile 10,773 9,967 Philippines 4,050 77,575 Other 14,826 7,110 $ 1,501,998 $ 1,092,418

Significant accounting polici_3

Significant accounting policies (Narrative) (Details)	12 Months Ended
	Dec. 31, 2021
Equipment [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Useful lives or depreciation rates, property, plant and equipment	straight-line over 1 to 20 years
Other plant assets [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Useful lives or depreciation rates, property, plant and equipment	straight-line over 1 to 20 years/unit-of-production
ROU Assets [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Useful lives or depreciation rates, property, plant and equipment	straight -line over 1 to 20 years

Revenue and expenses (Narrative

Revenue and expenses (Narrative) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021USD ($)Share	Dec. 31, 2020USD ($)Share
Revenue And Expenses [Line Items]
Variable consideration adjustment	$ 1,617	$ 6,668
Write-downs (recovery of cost of sales)	3,999	2,302
Inventory adjustments	5,445	2,302
Past service costs	4,989	$ 0
Increase in depreciation expense	$ 4,835
Stock options granted | Share	509,385	1,581,385
Employee share purchase plan, matching contribution, percentage	75.00%	75.00%
Gain on revaluation of liability	$ 4,602
Impairment loss	193,473
Peru [Member]
Revenue And Expenses [Line Items]
Write-downs (recovery of cost of sales)	$ (1,446)
Profit sharing plan, percentage	8.00%	8.00%
Manitoba [Member]
Revenue And Expenses [Line Items]
Write-downs (recovery of cost of sales)	$ 5,445
Profit sharing plan, percentage	10.00%	10.00%
Restructuring	$ 6,947
Bottom of range [member]
Revenue And Expenses [Line Items]
Employee share purchase plan, contributions, percentage of pre-tax base salary	1.00%	1.00%
Top of range [member]
Revenue And Expenses [Line Items]
Employee share purchase plan, contributions, percentage of pre-tax base salary	10.00%	10.00%

Revenue and expenses (Schedule

Revenue and expenses (Schedule of detailed information about revenue) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Analysis of income and expense [abstract]
Copper	$ 873,339	$ 563,910
Zinc	301,086	264,106
Gold	246,562	180,949
Silver	26,932	25,986
Molybdenum	37,487	25,627
Other	7,454	5,619
Revenue from sale of goods	1,492,860	1,066,197
Non-cash streaming arrangement items
Amortization of deferred revenue - gold	37,788	27,854
Amortization of deferred revenue - silver	33,731	39,409
Amortization of deferred revenue - variable consideration adjustments - prior periods	1,617	6,668
Amortization of deferred revenue	73,136	73,931
Pricing and volume adjustments	(8,568)	9,178
Revenue excluding treatment and refining charges	1,557,428	1,149,306
Treatment and refining charges	(55,430)	(56,888)
Revenue	$ 1,501,998	$ 1,092,418

Revenue and expenses (Schedul_2

Revenue and expenses (Schedule of depreciation and amortization expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Revenue And Expenses [Line Items]
Depreciation and amortization	$ 359,767	$ 363,603
Cost of sales [Member]
Revenue And Expenses [Line Items]
Depreciation and amortization	357,924	361,827
Selling and administrative expenses [Member]
Revenue And Expenses [Line Items]
Depreciation and amortization	$ 1,843	$ 1,776

Revenue and expenses (Schedul_3

Revenue and expenses (Schedule of detailed information about share-based expense (recoveries) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Revenue And Expenses [Line Items]
Share-based compensation expenses	$ 12,145	$ 15,008
Cost of sales [Member]
Revenue And Expenses [Line Items]
Share-based compensation expenses	1,347	1,400
Selling and administrative expenses [Member]
Revenue And Expenses [Line Items]
Share-based compensation expenses	10,428	13,130
Other [Member]
Revenue And Expenses [Line Items]
Share-based compensation expenses	370	478
Restricted Share Unit [Member]
Revenue And Expenses [Line Items]
Share-based compensation expenses	5,385	6,750
Restricted Share Unit [Member] | Cost of sales [Member]
Revenue And Expenses [Line Items]
Share-based compensation expenses	1,347	1,400
Restricted Share Unit [Member] | Selling and administrative expenses [Member]
Revenue And Expenses [Line Items]
Share-based compensation expenses	3,668	4,872
Restricted Share Unit [Member] | Other [Member]
Revenue And Expenses [Line Items]
Share-based compensation expenses	370	478
Deferred Share Unit [Member]
Revenue And Expenses [Line Items]
Share-based compensation expenses	1,459	5,149
Deferred Share Unit [Member] | Cost of sales [Member]
Revenue And Expenses [Line Items]
Share-based compensation expenses	0	0
Deferred Share Unit [Member] | Selling and administrative expenses [Member]
Revenue And Expenses [Line Items]
Share-based compensation expenses	1,459	5,149
Deferred Share Unit [Member] | Other [Member]
Revenue And Expenses [Line Items]
Share-based compensation expenses	0	0
Performance Share Unit [Member]
Revenue And Expenses [Line Items]
Share-based compensation expenses	3,382	1,987
Performance Share Unit [Member] | Cost of sales [Member]
Revenue And Expenses [Line Items]
Share-based compensation expenses	0	0
Performance Share Unit [Member] | Selling and administrative expenses [Member]
Revenue And Expenses [Line Items]
Share-based compensation expenses	3,382	1,987
Performance Share Unit [Member] | Other [Member]
Revenue And Expenses [Line Items]
Share-based compensation expenses	0	0
Stock Options [Member]
Revenue And Expenses [Line Items]
Share-based compensation expenses	1,919	1,122
Stock Options [Member] | Cost of sales [Member]
Revenue And Expenses [Line Items]
Share-based compensation expenses	0	0
Stock Options [Member] | Selling and administrative expenses [Member]
Revenue And Expenses [Line Items]
Share-based compensation expenses	1,919	1,122
Stock Options [Member] | Other [Member]
Revenue And Expenses [Line Items]
Share-based compensation expenses	$ 0	$ 0

Revenue and expenses (Schedul_4

Revenue and expenses (Schedule of detailed information about employee benefits expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Revenue And Expenses [Line Items]
Current employee benefits	$ 205,402	$ 179,486
Share-based payments	12,145	15,008
Employee share purchase plan	1,933	1,783
Defined benefit plans	11,433	11,671
Defined contribution plans	2,061	1,774
Past service costs	4,989	0
Other post-retirement employee benefits	7,526	9,305
Termination benefits	470	582
Employee benefits expense	245,959	219,609
Stock Options [Member]
Revenue And Expenses [Line Items]
Share-based payments	1,919	1,122
Restricted Share Unit [Member]
Revenue And Expenses [Line Items]
Share-based payments	5,385	6,750
Deferred Share Unit [Member]
Revenue And Expenses [Line Items]
Share-based payments	1,459	5,149
Performance Share Unit [Member]
Revenue And Expenses [Line Items]
Share-based payments	$ 3,382	$ 1,987

Revenue and expenses (Schedul_5

Revenue and expenses (Schedule of other operating expenses) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Revenue And Expenses [Line Items]
Other expenses	$ 29,779	$ 17,583
Regional costs [Member]
Revenue And Expenses [Line Items]
Other expenses	3,652	3,602
Loss on disposal of property, plant & equipment [Member]
Revenue And Expenses [Line Items]
Other expenses	7,038	5,088
Closure cost adjustment - non-producing properties [Member]
Revenue And Expenses [Line Items]
Other expenses	(4,602)	2,721
Allocation of community costs [Member]
Revenue And Expenses [Line Items]
Other expenses	1,768	2,880
Restructuring Manitoba [Member]
Revenue And Expenses [Line Items]
Other expenses	6,947	0
Copper World Preliminary Economic Assessment Study Costs [Member]
Revenue And Expenses [Line Items]
Other expenses	12,555	0
Other [Member]
Revenue And Expenses [Line Items]
Other expenses	$ 2,421	$ 3,292

Revenue and expenses (Schedul_6

Revenue and expenses (Schedule of finance income and expenses) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Net interest expense on long-term debt
Interest expense on long-term debt	$ 74,748	$ 82,712
Accretion on streaming arrangements
Current year additions	42,060	60,362
Variable consideration adjustments - prior periods	594	(3,692)
Accretion on streaming arrangements	42,654	56,670
Change in fair value of financial assets and liabilities at fair value through profit or loss
Embedded derivatives	49,754	(45,387)
Gold prepayment liability	293	20,141
Investments	4,467	(4,124)
Change in fair value of financial assets and liabilities at fair value through profit or loss	54,514	(29,370)
Other net finance costs
Net foreign exchange (gains) losses	1,403	(1,644)
Accretion on community agreements measured at amortized cost	2,811	3,641
Accretion on environmental provisions	4,988	3,543
Withholding taxes	7,727	8,267
Premium paid on redemption of notes	22,878	7,252
Write-down of unamortized transaction costs	2,480	3,817
Other finance expense	7,813	8,826
Interest income	(997)	(1,812)
Other net finance costs	49,103	31,890
Net finance expense	$ 221,019	$ 141,902

Trade and other receivables (Na

Trade and other receivables (Narrative) (Details)	12 Months Ended
	Dec. 31, 2021t
Trade and other receivables [abstract]
Weight of shipments	30,000

Trade and other receivables (Sc

Trade and other receivables (Schedule of detailed information about trade and other receivables) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Current
Trade receivables	$ 166,524	$ 107,787
Statutory receivables	31,191	28,445
Other receivables	6,366	4,967
Total current trade and other receivables	204,081	141,199
Non-current
Taxes receivable	16,084	16,941
Other receivables	0	1,627
Trade and other non-current receivables	16,084	18,568
Trade and other receivables	$ 220,165	$ 159,767

Inventories (Narrative) (Detail

Inventories (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Inventories [Line Items]
Cost of inventories recognised as expense during period	$ 1,069,309	$ 921,895
Write-downs (recovery of cost of sales)	3,999	$ 2,302
Decline in stockpile inventories	(6,784)
Increase in finished goods inventories	756
Peru [Member]
Inventories [Line Items]
Write-downs (recovery of cost of sales)	(1,446)
Manitoba [Member]
Inventories [Line Items]
Write-downs (recovery of cost of sales)	$ 5,445

Inventories (Schedule of detail

Inventories (Schedule of detailed information about inventories) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Current
Stockpile	$ 12,768	$ 13,906
Work in progress	5,647	6,364
Finished goods	78,958	72,923
Materials and supplies	61,080	49,912
Current Inventories	158,453	143,105
Non-current
Stockpile	34,156	16,704
Materials and supplies	3,417	5,302
Non current Inventories	37,573	22,006
Total Inventories	$ 196,026	$ 165,111

Other financial assets (Schedul

Other financial assets (Schedule of other financial assets) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Current
Derivative assets	$ 7,430	$ 2,736
Restricted cash	437	337
Other current financial assets	7,867	3,073
Non-current
Investments at fair value through profit or loss	11,158	15,669
Total other financial assets	$ 19,025	$ 18,742

Intangibles and other assets (N

Intangibles and other assets (Narrative) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Disclosure of detailed information about intangible assets [abstract]
Intangibles and other assets	$ 20,138	$ 21,173
Other assets	14,240	15,764
Intangible assets other than goodwill	$ 5,898	$ 5,409

Intangibles and other assets (S

Intangibles and other assets (Schedule of detailed information about intangible assets) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Disclosure of reconciliation of changes in intangible assets [line items]
Balance, beginning of year	$ 5,409
Balance, end of year	5,898	$ 5,409
Cost [Member]
Disclosure of reconciliation of changes in intangible assets [line items]
Balance, beginning of year	23,350	21,538
Additions	968	1,466
Disposals	0	0
Transfers	386	0
Effects of movement in exchange rates	64	346
Balance, end of year	24,768	23,350
Accumulated amortization [Member]
Disclosure of reconciliation of changes in intangible assets [line items]
Balance, beginning of year	(17,941)	(16,511)
Additions	(872)	(1,138)
Disposals	0	0
Effects of movement in exchange rates	(57)	(292)
Balance, end of year	$ (18,870)	$ (17,941)

Property, plant and equipment_2

Property, plant and equipment (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Dec. 31, 2021	Sep. 30, 2021	Dec. 31, 2021	Dec. 31, 2020
Disclosure of detailed information about property, plant and equipment [line items]
Impairment loss			$ 193,473
Increase in depreciation expense			4,835
Manitoba [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Impairment loss			193,473
Cash generating units [Member] | Arizona [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Capital works in progress - ROU assets (costs)	$ 5,112		$ 5,112
Cash generating units [Member] | Arizona and Manitoba [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Capital works in progress - ROU assets (costs)				$ 4,777
Cash generating units [Member] | Manitoba [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Impairment loss	$ 46,168	$ 147,305

Property, plant and equipment_3

Property, plant and equipment (Schedule of detailed information about property, plant and equipment) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Disclosure of detailed information about property, plant and equipment [line items]
Balance, beginning of year	$ 3,731,655
Additions	49,695	$ 17,759
Decommissioning and restoration	144,016	46,792
Balance, end of year	3,740,966	3,731,655
Cost [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance, beginning of year	6,261,704	5,806,084
Additions	346,335	303,653
Capitalized stripping and development	79,426	83,137
Decommissioning and restoration	144,016	46,792
Transfers and other movements	0	0
Disposals	(20,288)	(25,565)
Impairments	(193,473)
Effects of movement in exchange rates	6,362	47,603
Balance, end of year	6,624,082	6,261,704
Accumulated depreciation [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance, beginning of year	(2,530,049)	(2,143,525)
Depreciation for the year	(361,979)	(370,096)
Disposals	11,683	16,513
Effects of movement in exchange rates	(2,771)	(32,941)
Balance, end of year	(2,883,116)	(2,530,049)
Exploration and evaluation assets [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance, beginning of year	79,059
Balance, end of year	88,207	79,059
Exploration and evaluation assets [Member] | Cost [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance, beginning of year	79,059	69,903
Additions	9,084	809
Capitalized stripping and development	0	0
Decommissioning and restoration	0	0
Transfers and other movements	0	8,040
Disposals	0	0
Impairments	0
Effects of movement in exchange rates	64	307
Balance, end of year	88,207	79,059
Exploration and evaluation assets [Member] | Accumulated depreciation [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance, beginning of year	0	0
Depreciation for the year	0	0
Disposals	0	0
Effects of movement in exchange rates	0	0
Balance, end of year	0	0
Capital works in progress [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance, beginning of year	957,162
Balance, end of year	858,230	957,162
Capital works in progress [Member] | Cost [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance, beginning of year	957,162	733,874
Additions	268,090	256,251
Capitalized stripping and development	0	0
Decommissioning and restoration	(525)	263
Transfers and other movements	(357,381)	(36,668)
Disposals	(5,941)	0
Impairments	0
Effects of movement in exchange rates	(3,175)	3,442
Balance, end of year	858,230	957,162
Capital works in progress [Member] | Accumulated depreciation [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance, beginning of year	0	0
Depreciation for the year	0	0
Disposals	0	0
Effects of movement in exchange rates	0	0
Balance, end of year	0	0
Mining properties [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance, beginning of year	1,091,187
Balance, end of year	1,149,631	1,091,187
Mining properties [Member] | Cost [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance, beginning of year	2,217,461	2,146,583
Additions	1,731	311
Capitalized stripping and development	79,426	83,137
Decommissioning and restoration	4,630	6,849
Transfers and other movements	128,320	(41,256)
Disposals	0	0
Impairments	(1,054)
Effects of movement in exchange rates	3,486	21,837
Balance, end of year	2,434,000	2,217,461
Mining properties [Member] | Accumulated depreciation [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance, beginning of year	(1,126,274)	(963,530)
Depreciation for the year	(155,878)	(146,113)
Disposals	0	0
Effects of movement in exchange rates	(2,217)	(16,631)
Balance, end of year	(1,284,369)	(1,126,274)
Plant and equipment [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance, beginning of year	1,522,138
Balance, end of year	1,538,797	1,522,138
Plant and equipment [Member] | Cost [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance, beginning of year	2,793,719	2,653,752
Additions	17,735	28,523
Capitalized stripping and development	0	0
Decommissioning and restoration	139,911	39,680
Transfers and other movements	229,981	70,777
Disposals	(10,803)	(19,681)
Impairments	(192,419)
Effects of movement in exchange rates	5,795	20,668
Balance, end of year	2,983,919	2,793,719
Plant and equipment [Member] | Accumulated depreciation [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance, beginning of year	(1,271,581)	(1,069,687)
Depreciation for the year	(181,565)	(200,632)
Disposals	8,525	14,038
Effects of movement in exchange rates	(501)	(15,300)
Balance, end of year	(1,445,122)	(1,271,581)
Plant and equipment- ROU assets [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance, beginning of year	82,109
Balance, end of year	106,101	82,109
Plant and equipment- ROU assets [Member] | Cost [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance, beginning of year	214,303	201,972
Additions	49,695	17,759
Capitalized stripping and development	0	0
Decommissioning and restoration	0	0
Transfers and other movements	(920)	(893)
Disposals	(3,544)	(5,884)
Impairments	0
Effects of movement in exchange rates	192	1,349
Balance, end of year	259,726	214,303
Plant and equipment- ROU assets [Member] | Accumulated depreciation [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance, beginning of year	(132,194)	(110,308)
Depreciation for the year	(24,536)	(23,351)
Disposals	3,158	2,475
Effects of movement in exchange rates	(53)	(1,010)
Balance, end of year	$ (153,625)	$ (132,194)

Trade and other payables (Sched

Trade and other payables (Schedule of detailed information about trade and other payables) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Trade and other payables [abstract]
Trade payables	$ 84,279	$ 104,598
Accruals and payables	84,992	72,698
Accrued interest	16,120	30,766
Exploration and evaluation payables	3,788	1,351
Statutory payables	18,598	23,734
Trade and other payables	$ 207,777	$ 233,147

Other liabilities (Schedule of

Other liabilities (Schedule of other current liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Current assets
Environmental and other provisions	$ 41,017	$ 33,675
Pension liability	10,472	13,552
Other employee benefits	3,530	3,154
Unearned revenue	7,983	1,590
Other liabilities	$ 63,002	$ 51,971

Other financial liabilities (Na

Other financial liabilities (Narrative) (Details) $ in Thousands	May 07, 2020USD ($)Ounce$ / OZ	Dec. 31, 2021USD ($)	Dec. 31, 2020USD ($)
Disclosure of financial liabilities [abstract]
Discount rate on streaming agreement		9.00%
Proceeds from gold prepayment	$ 115,005	$ 0	$ 115,005
Gold ounces sold | Ounce	79,954
Gold forward curve average price per ounce | $ / OZ	1,682
Gains (losses) on financial liabilities at fair value through profit or loss		$ (2,977)	$ (22,026)

Other financial liabilities (Sc

Other financial liabilities (Schedule of detailed information about other financial liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Current
Derivative liabilities	$ 12,451	$ 15,312
Deferred Rosemont acquisition consideration	9,713	0
Gold prepayment liability	71,394	0
Agreements with communities recorded at amortized cost	7,144	9,401
Other financial liabilities, current	100,702	24,713
Non-current
Deferred Rosemont acquisition consideration	17,805	25,961
Gold prepayment liability	68,614	137,031
Wheaton refund liability	5,424	0
Agreements with communities recorded at amortized cost	29,129	31,386
Other financial liabilities, non-current	120,972	194,378
Other financial liabilities	$ 221,674	$ 219,091

Other financial liabilities (_2

Other financial liabilities (Schedule of detailed information about changes in other financial liabilities at amortized cost) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Disclosure of financial liabilities [abstract]
Beginning balance	$ 40,787	$ 24,000
Net additions	22,796	116,233
Disbursements	(26,511)	(98,375)
Accretion	2,811	3,641
Effects of changes in foreign exchange	(3,610)	(4,712)
Ending balance	$ 36,273	$ 40,787

Lease Liability (Narrative) (De

Lease Liability (Narrative) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021USD ($)
Disclosure of quantitative information about right-of-use assets [line items]
Additions to ROU leases	$ 1,844
Finance lease obligations [Member] | Bottom of range [member]
Disclosure of quantitative information about right-of-use assets [line items]
Borrowings, interest rate	2.50%
Finance lease obligations [Member] | Top of range [member]
Disclosure of quantitative information about right-of-use assets [line items]
Borrowings, interest rate	7.43%

Lease Liability (Schedule of ad

Lease Liability (Schedule of additional information about leasing activities for lessee) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Lease liabilities [abstract]
Beginning balance	$ 63,514	$ 81,947
Additional capitalized leases	49,695	17,759
Lease payments	(37,719)	(35,980)
Accretion and other movements	2,512	(212)
Ending balance	78,002	63,514
Current lease liabilities	33,529	33,473
Non-current lease liabilities	44,473	30,041
Lease Liabilities	$ 78,002	$ 63,514

Lease Liability (Schedule of ex

Lease Liability (Schedule of expenses recognized to leases for which exemption applied) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Lease liabilities [abstract]
Short-term leases	$ 38,092	$ 40,253
Low value leases	407	353
Variable leases	58,626	57,389
Total	$ 97,125	$ 97,995

Long-term debt (Narrative) (Det

Long-term debt (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Oct. 26, 2021	Mar. 08, 2021	Sep. 23, 2020	Aug. 31, 2020
Disclosure of detailed information about borrowings [line items]
Write-down of unamortized transaction costs	$ 2,480	$ 3,817
Premium paid on redemption of notes	22,878	7,252
Senior unsecured notes [Member]
Disclosure of detailed information about borrowings [line items]
Face amount of debt instruments	1,200,000
Write-down of unamortized transaction costs	2,480	2,315
Write-down of fair value of embedded derivative (prepayment option)	49,754
Senior Notes Due 2023 [Member]
Disclosure of detailed information about borrowings [line items]
Face amount of debt instruments					$ 400,000
Borrowings, interest rate					7.25%
Write-down of unamortized transaction costs		2,315
Premium paid on redemption of notes		7,252
Senior Notes Due 2025 [Member]
Disclosure of detailed information about borrowings [line items]
Face amount of debt instruments		$ 600,000
Borrowings, interest rate		7.625%
Write-down of unamortized transaction costs	2,480
Write-down of fair value of embedded derivative (prepayment option)	49,754
Premium paid on redemption of notes	22,878
Senior Notes Due 2026 [Member]
Disclosure of detailed information about borrowings [line items]
Face amount of debt instruments	$ 600,000			$ 600,000
Borrowings, interest rate	4.50%			4.50%
Senior Notes Due 2029 [Member]
Disclosure of detailed information about borrowings [line items]
Face amount of debt instruments	$ 600,000				$ 600,000
Borrowings, interest rate	6.125%				6.125%
Senior secured revolving credit facilities [Member]
Disclosure of detailed information about borrowings [line items]
Face amount of debt instruments		$ 400,000	$ 450,000			$ 550,000
Senior secured revolving credit facilities [Member] | Peru [Member]
Disclosure of detailed information about borrowings [line items]
Letters of credit issued to support reclamation or pension obligations	$ 11,470
Letters of credit	87,091
Senior secured revolving credit facilities [Member] | Manitoba [Member]
Disclosure of detailed information about borrowings [line items]
Letters of credit issued to support reclamation or pension obligations	91,583
Senior secured revolving credit facilities [Member] | Arizona [Member]
Disclosure of detailed information about borrowings [line items]
Surety bonds issued to support reclamation obligations	$ 28,291
Unamortized transaction costs - revolving credit facilities [Member]
Disclosure of detailed information about borrowings [line items]
Write-down of unamortized transaction costs		$ 1,502

Long-term debt (Schedule of bor

Long-term debt (Schedule of borrowings) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of detailed information about borrowings [line items]
Total debt	$ 1,180,274	$ 1,135,675
Senior unsecured notes [Member]
Disclosure of detailed information about borrowings [line items]
Total debt	1,185,805	1,139,695	$ 991,558
Unamortized transaction costs - revolving credit facilities [Member]
Disclosure of detailed information about borrowings [line items]
Less: Unamortized transaction costs - revolving credit facilities	$ (5,531)	$ (4,020)	$ (6,303)

Long-term debt (Schedule of det

Long-term debt (Schedule of detailed information about borrowings) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Disclosure of detailed information about borrowings [line items]
Borrowings, beginning balance	$ 1,135,675
Addition to Principal	591,922	$ 591,824
Principal repayments	(600,000)	(400,000)
Transaction costs	19,623	16,204
Write-down of unamortized transaction costs	2,480	3,817
Borrowings, ending balance	1,180,274	1,135,675
Senior unsecured notes [Member]
Disclosure of detailed information about borrowings [line items]
Borrowings, beginning balance	1,139,695	991,558
Addition to Principal	591,922	591,824
Principal repayments	(600,000)	(400,000)
Transaction costs	8,078	8,176
Change in fair value of embedded derivative (prepayment option)		(47,169)
Write-down of fair value of embedded derivative (prepayment option)	49,754
Write-down of unamortized transaction costs	2,480	2,315
Accretion of transaction costs and premiums	1,954	1,167
Borrowings, ending balance	$ 1,185,805	$ 1,139,695

Long-term debt (Schedule of d_2

Long-term debt (Schedule of detailed information about unamortized transaction costs - revolving credit facilities) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Disclosure of detailed information about borrowings [line items]
Write-down of unamortized transaction costs	$ (2,480)	$ (3,817)
Unamortized transaction costs - revolving credit facilities [Member]
Disclosure of detailed information about borrowings [line items]
Unamortized transaction costs, beginning balance	4,020	6,303
Accretion of transaction costs	(2,816)	(3,062)
Write-down of unamortized transaction costs		(1,502)
Transaction costs	4,327	2,281
Unamortized transaction costs, ending balance	$ 5,531	$ 4,020

Deferred revenue (Narrative) (D

Deferred revenue (Narrative) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021USD ($)$ / oz	Dec. 31, 2020USD ($)$ / oz$ / OZ	May 01, 2021$ / OZ	Apr. 30, 2021$ / OZ	Nov. 04, 2013USD ($)	Aug. 08, 2012USD ($)
Disclosure of disaggregation of revenue from contracts with customers [line items]
Deposits from customers					$ 885,000
Description of aggregate deposit payments	(i) 100% of payable gold and silver from the 777 mine until the end of 2016, and delivery of 50% of payable gold and 100% of payable silver for the remainder of the 777 mine life; and aggregate deposit payments of $429,900 against the delivery of (ii) 100% of payable silver and 50% of payable gold from Peru's production.
Description of additional deposit payments	In addition to the aggregate deposit payments of $885,000, as gold and silver is delivered under the stream agreements, Hudbay receives cash payments equal to the lesser of (i) the market price and (ii) $400 per ounce (for gold) and $5.90 per ounce (for silver), subject to 1% annual escalation after three years, from the inception of the agreement.
Discount rate on streaming agreement	9.00%
Stream deposit	$ 4,000
Amortization of deferred revenue - variable consideration adjustments - prior periods	1,617	$ 6,668
Variable consideration adjustment - increase of finance expense	594	(3,692)
Variable consideration adjustments - prior periods	$ (1,617)	$ 6,668
Stream transactions with 777 mine [Member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Deposits from customers						$ 455,100
Drawdown rate for gold | $ / oz	1,578	1,589
Drawdown rate for silver | $ / oz	30.38	30.63
Discount rate on streaming agreement	9.00%
Stream transactions with Constancia mine [Member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Deposits from customers					$ 429,900
Peru Stream Agreement [Member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Drawdown rate for gold | $ / OZ		976	762	990
Drawdown rate for silver | $ / OZ		21.52	15.64	21.86
Description of increased fixed gold recoveries	The amendment eliminates the requirement to deliver 8,020 ounces of gold to Wheaton for not mining four million tonnes of ore from the Pampacancha deposit by June 30, 2021. In consideration for the elimination of this delivery obligation, Hudbay has agreed to increase the fixed gold recoveries that apply to Constancia ore production from 55% to 70% until December 31, 2025, which matches the fixed recovery rate that applies to Pampacancha production.
Stream deposit	$ 4,000

Deferred revenue (Schedule of c

Deferred revenue (Schedule of changes in deferred revenue) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Disclosure Of Deferred Revenue [Abstract]
Stream accounting - Deferred revenue, beginning balance	$ 546,684	$ 563,756
Amortization of deferred revenue
Liability drawdown	(71,519)	(67,263)
Variable consideration adjustments - prior periods	(1,617)	6,668
Accretion on streaming arrangements
Current year additions	42,060	60,362
Variable consideration adjustments - prior periods	594	(3,692)
Reclass of refund liability	(5,424)
Stream deposit	4,000
Effects of changes in foreign exchange	548	189
Stream accounting - Deferred revenue, ending balance	$ 515,326	$ 546,684

Deferred revenue (Schedule of d

Deferred revenue (Schedule of detailed information about deferred revenue) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure Of Deferred Revenue [Abstract]
Current	$ 88,963	$ 102,782
Non-current	426,363	443,902
Deferred revenue	$ 515,326	$ 546,684	$ 563,756

Environmental and other provi_3

Environmental and other provisions (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Disclosure of other provisions [line items]
Impairment loss	$ 193,473
Bottom of range [Member]
Disclosure of other provisions [line items]
Provision estimates, discount rate used	0.39%	0.12%
Top of range [Member]
Disclosure of other provisions [line items]
Provision estimates, discount rate used	1.94%	1.65%

Environmental and other provi_4

Environmental and other provisions (Schedule of changes in provisions) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Disclosure of other provisions [line items]
Provisions, beginning balance	$ 365,474	$ 314,425
Net additional provisions made	190,954	12,410
Disbursements	(29,864)	(23,704)
Unwinding of discount	4,988	3,543
Effect of change in estimate to inflation rates	(23,173)
Effect of change in discount rate	(9,982)	43,180
Effect of foreign exchange	2,762	7,509
Effect of change in share price	1,359	8,111
Provisions, ending balance	502,518	365,474
Decommissioning, restoration and similar liabilities [Member]
Disclosure of other provisions [line items]
Provisions, beginning balance	343,132	302,116
Net additional provisions made	172,023	5,868
Disbursements	(21,663)	(18,737)
Unwinding of discount	4,988	3,543
Effect of change in estimate to inflation rates	(23,173)
Effect of change in discount rate	(9,982)	43,180
Effect of foreign exchange	2,475	7,162
Effect of change in share price	0	0
Provisions, ending balance	467,800	343,132
Deferred share units [Member]
Disclosure of other provisions [line items]
Provisions, beginning balance	8,719	3,876
Net additional provisions made	1,233	1,628
Disbursements	(2,053)	(497)
Unwinding of discount	0	0
Effect of change in estimate to inflation rates	0
Effect of change in discount rate	0	0
Effect of foreign exchange	(18)	191
Effect of change in share price	226	3,521
Provisions, ending balance	8,107	8,719
Restricted share units [Member]
Disclosure of other provisions [line items]
Provisions, beginning balance	10,449	5,477
Net additional provisions made	5,523	3,642
Disbursements	(6,143)	(2,646)
Unwinding of discount	0	0
Effect of change in estimate to inflation rates	0
Effect of change in discount rate	0	0
Effect of foreign exchange	316	116
Effect of change in share price	744	3,860
Provisions, ending balance	10,889	10,449
Performance share unit [Member]
Disclosure of other provisions [line items]
Provisions, beginning balance	2,030	0
Net additional provisions made	2,993	1,257
Disbursements	0	0
Unwinding of discount	0	0
Effect of change in estimate to inflation rates	0
Effect of change in discount rate	0	0
Effect of foreign exchange	(10)	43
Effect of change in share price	389	730
Provisions, ending balance	5,402	2,030
Other provisions [Member]
Disclosure of other provisions [line items]
Provisions, beginning balance	1,144	2,956
Net additional provisions made	9,182	15
Disbursements	(5)	(1,824)
Unwinding of discount	0	0
Effect of change in estimate to inflation rates	0
Effect of change in discount rate	0	0
Effect of foreign exchange	(1)	(3)
Effect of change in share price	0	0
Provisions, ending balance	$ 10,320	$ 1,144

Environmental and other provi_5

Environmental and other provisions (Schedule of detailed information about provisions) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of other provisions [line items]
Current provisions	$ 41,017	$ 33,675
Non-current provisions	461,501	331,799
Total provisions	502,518	365,474	$ 314,425
Decommissioning, restoration and similar liabilities [Member]
Disclosure of other provisions [line items]
Current provisions	16,759	20,308
Non-current provisions	451,041	322,824
Total provisions	467,800	343,132	302,116
Deferred share units [Member]
Disclosure of other provisions [line items]
Current provisions	8,107	8,719
Non-current provisions	0	0
Total provisions	8,107	8,719	3,876
Restricted share units [Member]
Disclosure of other provisions [line items]
Current provisions	5,061	4,648
Non-current provisions	5,828	5,801
Total provisions	10,889	10,449	5,477
Performance share unit [Member]
Disclosure of other provisions [line items]
Current provisions	4,622	0
Non-current provisions	780	2,030
Total provisions	5,402	2,030	0
Other provisions [Member]
Disclosure of other provisions [line items]
Current provisions	6,468	0
Non-current provisions	3,852	1,144
Total provisions	$ 10,320	$ 1,144	$ 2,956

Pension obligations (Narrative)

Pension obligations (Narrative) (Details) - Pension obligations [Member] $ in Thousands	12 Months Ended
	Dec. 31, 2021USD ($)Year	Dec. 31, 2020
Statements [Line Items]
Estimate of contributions expected to be paid to plan for next annual reporting period	$ 12,477
Weighted average duration of defined benefit obligation	19 years 2 months 12 days	21 years 2 months 12 days
Actuarial assumption of discount rates [Member]
Statements [Line Items]
Reasonably possible increase in actuarial assumption, basis points	50
Increase (decrease) in defined benefit obligation due to reasonably possible increase in actuarial assumption	$ (18,774)
Reasonably possible decrease in actuarial assumption, basis points	50
Increase (decrease) in defined benefit obligation due to reasonably possible decrease in actuarial assumption	$ 21,539
Actuarial assumption of expected rates of salary increases [Member]
Statements [Line Items]
Percentage of reasonably possible increase in actuarial assumption	1.00%
Increase (decrease) in defined benefit obligation due to reasonably possible increase in actuarial assumption	$ 2,824
Percentage of reasonably possible decrease in actuarial assumption	1.00%
Increase (decrease) in defined benefit obligation due to reasonably possible decrease in actuarial assumption	$ (2,522)
Actuarial assumptions of life expectancy [Member]
Statements [Line Items]
Reasonably possible increase in life expectancy (years) | Year	1
Increase (decrease) in defined benefit obligation due to reasonably possible increase in actuarial assumption	$ 1,795
Reasonably possible decrease in life expectancy (years) | Year	1
Increase (decrease) in defined benefit obligation due to reasonably possible decrease in actuarial assumption	$ (1,847)
Active members [Member]
Statements [Line Items]
Weighted average duration of defined benefit obligation	21 years	22 years 3 months 18 days
Deferred members [Member]
Statements [Line Items]
Weighted average duration of defined benefit obligation	23 years 6 months	21 years 10 months 24 days
Retired members [Member]
Statements [Line Items]
Weighted average duration of defined benefit obligation	10 years	12 years

Pension obligations (Schedule o

Pension obligations (Schedule of additional information about defined benefit plans) - (Details) - Pension obligations [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Pension Obligations [Line Items]
Opening defined benefit obligation	$ 240,354	$ 243,733
Current service costs	11,295	11,044
Past service cost	4,989	0
Interest cost	6,172	6,569
Benefits paid from plan	(22,546)	(35,384)
Benefits paid from employer	(866)	(1,317)
Participant contributions	34	48
Effects of movements in exchange rates	950	2,780
Arising from changes in demographic assumptions	1,498	(1,461)
Arising from changes in financial assumptions	(24,663)	16,967
Arising from experience adjustments	(848)	(2,625)
Closing defined benefit obligation	$ 216,369	$ 240,354

Pension obligations (Schedule_2

Pension obligations (Schedule of additional information about defined benefit plans, balance by member group) - (Details) - Pension obligations [Member] - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Pension Obligations [Line Items]
Closing defined benefit obligation	$ 216,369	$ 240,354	$ 243,733
Active members [Member]
Pension Obligations [Line Items]
Closing defined benefit obligation	176,644	211,861
Deferred members [Member]
Pension Obligations [Line Items]
Closing defined benefit obligation	2,538	2,198
Retired members [Member]
Pension Obligations [Line Items]
Closing defined benefit obligation	$ 37,187	$ 26,295

Pension obligations (Schedule_3

Pension obligations (Schedule of changes in fair value of plan assets) - (Details) - Pension obligations [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Pension Obligations [Line Items]
Opening fair value of plan assets	$ 203,486	$ 202,119
Interest income	5,387	5,695
(Loss) return on plan assets (excluding amounts included in net interest expense)	(306)	15,377
Contributions from the employer	12,750	12,987
Employer direct benefit payments	866	1,317
Contributions from plan participants	34	48
Benefit payment from employer	(866)	(1,317)
Administrative expenses paid from plan assets	(83)	(77)
Benefits paid	(22,546)	(35,384)
Effects of changes in foreign exchange rates	923	2,721
Closing fair value of plan assets	$ 199,645	$ 203,486

Pension obligations (Schedule_4

Pension obligations (Schedule of net defined benefit liability (asset)) - (Details) - Pension obligations [Member] - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Pension Obligations [Line Items]
Present value of funded defined benefit obligation	$ 197,546	$ 220,210
Fair value of plan assets	(199,645)	(203,486)	$ (202,119)
Present value of unfunded defined benefit obligation	18,823	20,144
Net liability arising from defined benefit obligation	$ 16,724	$ 36,868

Pension obligations (Schedule_5

Pension obligations (Schedule of detailed information about pension obligation) - (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Pension Obligations [Line Items]
Pension obligation - non-current	$ 6,252	$ 23,316
Pension obligations [Member]
Pension Obligations [Line Items]
Pension obligation - current	10,472	13,552
Pension obligation - non-current	6,252	23,316
Net liability	$ 16,724	$ 36,868

Pension obligations (Schedule_6

Pension obligations (Schedule of detailed information about pension expense) - (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Pension Obligations [Line Items]
Defined benefit pension expense	$ 11,433	$ 11,671
Defined contribution pension expense	2,061	1,774
Pension obligations [Member]
Pension Obligations [Line Items]
Current service cost	11,295	11,044
Past service cost	4,989	0
Total service cost	16,284	11,044
Net interest expense	785	874
Administration cost	83	77
Defined benefit pension expense	17,152	11,995
Defined contribution pension expense	$ 2,061	$ 1,791

Pension obligations (Schedule_7

Pension obligations (Schedule of detailed information about remeasurement on net defined benefit liability) - (Details) - Pension obligations [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Pension Obligations [Line Items]
Loss (return) on plan assets (excluding amounts included in net interest expense)	$ 306	$ (15,377)
Actuarial losses/(gains) arising from changes in demographic assumptions	1,498	(1,461)
Actuarial (gains) losses arising from changes in financial assumptions	(24,663)	16,967
Actuarial gains arising from changes experience adjustments	(848)	(2,625)
Defined benefit gain related to remeasurement	(23,707)	(2,496)
Total pension cost	$ (4,494)	$ 11,290

Pension obligations (Schedule_8

Pension obligations (Schedule of defined benefit plan, assumptions used) - (Details) - Pension obligations [Member] - USD ($)	Dec. 31, 2021	Dec. 31, 2020
Defined benefit cost [Member]
Pension Obligations [Line Items]
Expected rate of salary increase	2.75%	2.75%
Defined benefit cost [Member] | Benefit obligations [Member]
Pension Obligations [Line Items]
Discount rate	2.54%	3.08%
Defined benefit cost [Member] | Service cost [Member]
Pension Obligations [Line Items]
Discount rate	2.66%	3.10%
Defined benefit cost [Member] | Males [Member]
Pension Obligations [Line Items]
Average longevity at retirement age for current pensioners (years)	20.3	20.3
Defined benefit cost [Member] | Females [Member]
Pension Obligations [Line Items]
Average longevity at retirement age for current pensioners (years)	23.7	23.7
Defined benefit obligation [Member]
Pension Obligations [Line Items]
Discount rate	3.09%	2.54%
Expected rate of salary increase	2.75%	2.75%
Defined benefit obligation [Member] | Males [Member]
Pension Obligations [Line Items]
Average longevity at retirement age for current pensioners (years)	20.4	20.3
Average longevity at retirement age for current employees (future pensioners) (years)	22.2	22.2
Defined benefit obligation [Member] | Females [Member]
Pension Obligations [Line Items]
Average longevity at retirement age for current pensioners (years)	23.7	23.7
Average longevity at retirement age for current employees (future pensioners) (years)	25.4	25.4

Pension obligations (Schedule_9

Pension obligations (Schedule of fair value of plan assets) - (Details) - Pension obligations [Member] - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Pension Obligations [Line Items]
Plan assets, at fair value	$ 199,645	$ 203,486	$ 202,119
Level 1 [Member]
Pension Obligations [Line Items]
Plan assets, at fair value	80,137	73,692
Level 2 [Member]
Pension Obligations [Line Items]
Plan assets, at fair value	119,508	129,794
Level 3 [Member]
Pension Obligations [Line Items]
Plan assets, at fair value	0	0
Money market instruments [Member]
Pension Obligations [Line Items]
Cash and cash equivalents, amount contributed to fair value of plan assets	2,045	4,766
Money market instruments [Member] | Level 1 [Member]
Pension Obligations [Line Items]
Cash and cash equivalents, amount contributed to fair value of plan assets	2,045	4,766
Money market instruments [Member] | Level 2 [Member]
Pension Obligations [Line Items]
Cash and cash equivalents, amount contributed to fair value of plan assets	0	0
Money market instruments [Member] | Level 3 [Member]
Pension Obligations [Line Items]
Cash and cash equivalents, amount contributed to fair value of plan assets	0	0
Pooled equity funds [Member]
Pension Obligations [Line Items]
Investment funds, amount contributed to fair value of plan assets	78,092	68,926
Pooled equity funds [Member] | Level 1 [Member]
Pension Obligations [Line Items]
Investment funds, amount contributed to fair value of plan assets	78,092	68,926
Pooled equity funds [Member] | Level 2 [Member]
Pension Obligations [Line Items]
Investment funds, amount contributed to fair value of plan assets	0	0
Pooled equity funds [Member] | Level 3 [Member]
Pension Obligations [Line Items]
Investment funds, amount contributed to fair value of plan assets	0	0
Pooled fixed income funds [Member]
Pension Obligations [Line Items]
Investment funds, amount contributed to fair value of plan assets	97,229	98,922
Pooled fixed income funds [Member] | Level 1 [Member]
Pension Obligations [Line Items]
Investment funds, amount contributed to fair value of plan assets	0	0
Pooled fixed income funds [Member] | Level 2 [Member]
Pension Obligations [Line Items]
Investment funds, amount contributed to fair value of plan assets	97,229	98,922
Pooled fixed income funds [Member] | Level 3 [Member]
Pension Obligations [Line Items]
Investment funds, amount contributed to fair value of plan assets	0	0
Alternative investment funds [Member]
Pension Obligations [Line Items]
Investment funds, amount contributed to fair value of plan assets	21,983	30,323
Alternative investment funds [Member] | Level 1 [Member]
Pension Obligations [Line Items]
Investment funds, amount contributed to fair value of plan assets	0	0
Alternative investment funds [Member] | Level 2 [Member]
Pension Obligations [Line Items]
Investment funds, amount contributed to fair value of plan assets	21,983	30,323
Alternative investment funds [Member] | Level 3 [Member]
Pension Obligations [Line Items]
Investment funds, amount contributed to fair value of plan assets	0	0
Balanced Fund [Member]
Pension Obligations [Line Items]
Investment funds, amount contributed to fair value of plan assets	296	549
Balanced Fund [Member] | Level 1 [Member]
Pension Obligations [Line Items]
Investment funds, amount contributed to fair value of plan assets	0	0
Balanced Fund [Member] | Level 2 [Member]
Pension Obligations [Line Items]
Investment funds, amount contributed to fair value of plan assets	296	549
Balanced Fund [Member] | Level 3 [Member]
Pension Obligations [Line Items]
Investment funds, amount contributed to fair value of plan assets	$ 0	$ 0

Other employee benefits (Narrat

Other employee benefits (Narrative) (Details) - Other employee benefits [Member] $ in Thousands	12 Months Ended
	Dec. 31, 2021USD ($)Year	Dec. 31, 2020Year
Other Employee Benefits [Line Items]
Weighted average duration of non-pension post employment obligation | Year	18.6	19.4
Actuarial assumption of discount rates [Member]
Other Employee Benefits [Line Items]
Reasonably possible increase in actuarial assumption, basis points	50
Increase (decrease) in defined benefit obligation due to reasonably possible increase in actuarial assumption	$ (11,124)
Reasonably possible decrease in actuarial assumption, basis points	50
Increase (decrease) in defined benefit obligation due to reasonably possible decrease in actuarial assumption	$ 12,821
Actuarial assumption of health care cost trend rates [Member]
Other Employee Benefits [Line Items]
Percentage of reasonably possible increase in actuarial assumption	1.00%
Increase (decrease) in defined benefit obligation due to reasonably possible increase in actuarial assumption	$ 25,894
Percentage of reasonably possible decrease in actuarial assumption	1.00%
Increase (decrease) in defined benefit obligation due to reasonably possible decrease in actuarial assumption	$ (19,987)
Actuarial assumptions of life expectancy [Member]
Other Employee Benefits [Line Items]
Reasonably possible increase in life expectancy (years) | Year	1
Increase (decrease) in defined benefit obligation due to reasonably possible increase in actuarial assumption	$ 5,088
Reasonably possible decrease in life expectancy (years) | Year	1
Increase (decrease) in defined benefit obligation due to reasonably possible decrease in actuarial assumption	$ (5,147)
Active members [Member]
Other Employee Benefits [Line Items]
Weighted average duration of non-pension post employment obligation | Year	25.4	24.6
Inactive members [Member]
Other Employee Benefits [Line Items]
Weighted average duration of non-pension post employment obligation | Year	13.2	13.6

Other employee benefits (Schedu

Other employee benefits (Schedule of additional information about other employee benefit plans) - (Details) - Other employee benefits [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Other Employee Benefits [Line Items]
Opening defined benefit obligation	$ 129,616	$ 116,696
Current service costs	3,861	4,140
Past service cost	134	0
Interest cost	3,531	3,478
Effects of movements in exchange rates	639	2,423
Remeasurement actuarial losses/(gains):
Arising from changes in demographic assumptions	2,601	(4,460)
Arising from changes in financial assumptions	(7,309)	10,043
Arising from experience adjustments	(1,034)	(489)
Benefits paid	(3,196)	(2,215)
Closing defined benefit obligation	$ 128,843	$ 129,616

Other employee benefits (Sche_2

Other employee benefits (Schedule of additional information about other employee benefit plans, balance by member group) - (Details) - Other employee benefits [Member] - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Other Employee Benefits [Line Items]
Closing defined benefit obligation	$ 128,843	$ 129,616	$ 116,696
Active members [Member]
Other Employee Benefits [Line Items]
Closing defined benefit obligation	57,775	68,983
Inactive members [Member]
Other Employee Benefits [Line Items]
Closing defined benefit obligation	$ 71,068	$ 60,633

Other employee benefits (Sche_3

Other employee benefits (Schedule of changes in fair value of assets of other employee benefits plan) (Details) - Other employee benefits [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Other Employee Benefits [Line Items]
Employer contributions	$ 3,196	$ 2,215
Benefits paid	(3,196)	(2,215)
Closing fair value of assets	$ 0	$ 0

Other employee benefits (Sche_4

Other employee benefits (Schedule of net benefit liability for other employee benefits (Details) - Other employee benefits [Member] - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Other Employee Benefits [Line Items]
Unfunded benefit obligation	$ 128,843	$ 129,616	$ 116,696
Vacation accrual and other - non-current	3,275	3,046
Net liability	$ 132,118	$ 132,662

Other employee benefits (Sche_5

Other employee benefits (Schedule of detailed information about other employee benefits plan) (Details) - Other employee benefits [Member] - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Other Employee Benefits [Line Items]
Other employee benefits liability - current	$ 3,530	$ 3,154
Other employee benefits liability - non-current	128,588	129,508
Net liability	$ 132,118	$ 132,662

Other employee benefits (Sche_6

Other employee benefits (Schedule of detailed information about employee future benefit expense) (Details) - Other employee benefits [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Other Employee Benefits [Line Items]
Current service cost	$ 3,995	$ 4,140
Net interest expense	3,531	3,478
Components recognized in consolidated income statements	$ 7,526	$ 7,618

Other employee benefits (Sche_7

Other employee benefits (Schedule of detailed information about remeasurement of other long term employee benefits) (Details) - Other employee benefits [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Other Employee Benefits [Line Items]
Actuarial losses/(gains) arising from changes in demographic assumptions	$ 2,601	$ (4,460)
Actuarial (gains)/losses arising from changes in financial assumptions	(7,309)	10,043
Actuarial gains arising from changes experience adjustments	(1,034)	(489)
Components recognized in statements of comprehensive income	(5,742)	5,094
Total other employee future benefit cost	$ 1,784	$ 12,712

Other employee benefits (Sche_8

Other employee benefits (Schedule of other employee benefit plan, assumptions used (Details) - Other employee benefits [Member] - USD ($)	Dec. 31, 2021	Dec. 31, 2020
Defined benefit cost [Member]
Other Employee Benefits [Line Items]
Discount rate	2.76%	3.17%
Defined benefit cost [Member] | Initial [Member]
Other Employee Benefits [Line Items]
Weighted average health care trend rate	5.66%	5.68%
Defined benefit cost [Member] | Ultimate [Member]
Other Employee Benefits [Line Items]
Weighted average health care trend rate	4.00%	4.00%
Defined benefit cost [Member] | Males [Member]
Other Employee Benefits [Line Items]
Average longevity at retirement age for current pensioners (years)	20.3	21.2
Defined benefit cost [Member] | Females [Member]
Other Employee Benefits [Line Items]
Average longevity at retirement age for current pensioners (years)	23.7	23.9
Defined benefit obligation [Member]
Other Employee Benefits [Line Items]
Discount rate	3.30%	2.76%
Defined benefit obligation [Member] | Initial [Member]
Other Employee Benefits [Line Items]
Weighted average health care trend rate	6.00%	5.66%
Defined benefit obligation [Member] | Ultimate [Member]
Other Employee Benefits [Line Items]
Weighted average health care trend rate	4.00%	4.00%
Defined benefit obligation [Member] | Males [Member]
Other Employee Benefits [Line Items]
Average longevity at retirement age for current pensioners (years)	20.4	20.3
Average longevity at retirement age for current employees (future pensioners) (years)	22.3	22.2
Defined benefit obligation [Member] | Females [Member]
Other Employee Benefits [Line Items]
Average longevity at retirement age for current pensioners (years)	23.7	23.7
Average longevity at retirement age for current employees (future pensioners) (years)	25.4	25.4

Income and mining taxes (Narrat

Income and mining taxes (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Description of expiry date of deductible temporary differences, unused tax losses and unused tax credits	The Canadian non-capital losses were incurred between 2006 and 2021 and have a twenty-year carry forward period. The United States net operating losses were incurred between 2004 and 2021 and have a twenty-year carry forward period. Peruvian net operating losses were incurred in 2021 and may be carried forward and set off against 50% of future profits without any time restrictions.
Non-capital losses [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Unused tax losses for which no deferred tax asset recognised	$ 23,500	$ 115,900
Capital losses [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Unused tax losses for which no deferred tax asset recognised	170,800	166,200
Other [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deductible temporary differences for which no deferred tax asset is recognised	586,800	91,900
Mining tax effect of temporary differences recognized [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deductible temporary differences for which no deferred tax asset is recognised	$ 18,159	$ 7,544

Income and mining taxes (Schedu

Income and mining taxes (Schedule of detailed information about effective income tax expense recovery) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Major components of tax expense (income) [abstract]
Current income tax expense	$ 25,570	$ 4,458
Mining taxes	20,830	4,671
Adjustments in respect of prior years	0	(398)
Current tax expense (income) and adjustments for current tax of prior periods	46,400	8,731
Income tax recoveries - origination, revaluation and/or reversal of temporary differences	(17,772)	(39,411)
Mining tax recoveries - origination, revaluation and/or reversal of temporary difference	4,235	(3,331)
Adjustments in respect of prior years	8,744	(494)
Deferred tax expense (income)	(4,793)	(43,236)
Tax expense (recovery)	$ 41,607	$ (34,505)

Income and mining taxes (Sche_2

Income and mining taxes (Schedule of deferred taxes) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax asset	$ 133,584	$ 101,899
Deferred tax liability	(261,764)	(229,433)
Net deferred tax asset (liability)	(128,180)	(127,534)	$ (167,882)
Income tax effect of temporary differences [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax asset	133,584	94,070
Deferred tax liability	(249,638)	(220,568)
Net deferred tax asset (liability)	(116,054)	(126,498)
Mining tax effect of temporary differences recognized [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax asset	0	7,829
Deferred tax liability	$ (12,126)	$ (8,865)

Income and mining taxes (Sche_3

Income and mining taxes (Schedule of changes in deferred tax assets and liabilities) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Major components of tax expense (income) [abstract]
Net deferred tax liability balance, beginning of year	$ (127,534)	$ (167,882)
Deferred tax expense	4,793	43,236
OCI transactions	(5,474)	759
Foreign currency translation on the deferred tax liability	35	(2,129)
Net deferred tax liability balance, end of year	$ (128,180)	$ (127,534)

Income and mining taxes (Sche_4

Income and mining taxes (Schedule of reconciliation to statutory tax rate) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Major components of tax expense (income) [abstract]
Statutory tax rate	26.40%	26.30%
Tax recovery at statutory rate	$ (53,526)	$ (47,047)
Effect of Deductions related to mining taxes	(5,491)	(1,369)
Adjusted income taxes	(59,017)	(48,416)
Mining tax expense (recovery)	32,034	1,291
Adjusted income tax expense after mining tax expense (recovery)	(26,983)	(47,125)
Permanent differences related to capital items	716	(160)
Permanent differences related to other income tax permanent differences	2,775	(1,165)
Impact of remeasurement on decommissioning liability	33,731	7,094
Temporary income tax differences not recognized	4,483	1,100
Impact related to differences in tax rates in foreign operations	21,201	5,534
Impact of changes to statutory tax rates	(706)	2,412
Foreign exchange on non-monetary items	4,593	(3,628)
Impact related to tax assessments and tax return amendments	1,797	1,433
Tax expense (recovery)	$ 41,607	$ (34,505)

Income and mining taxes (Sche_5

Income and mining taxes (Schedule of temporary differences recognized) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred income tax (liability) asset	$ (128,180)	$ (127,534)	$ (167,882)
Property, plant and equipment [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred income tax asset	(40,491)	(88,368)
Deferred income tax liability	322,325	292,858
Pension obligation [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred income tax asset	4,369	9,467
Other employee benefits [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred income tax asset	27,191	25,687
Deferred income tax liability	(654)	203
Decommissioning and restoration obligation [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred income tax asset	29,870	37,902
Asset retirement obligations [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred income tax liability	(9,609)	(1,588)
Non-capital losses [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred income tax asset	93,892	110,374
Deferred income tax liability	(58,777)	(78,607)
Share issue and debt costs [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred income tax asset	17,984	8,972
Embedded derivative (prepayment option) [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred income tax asset	0	(13,137)
Deferred revenue [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred income tax asset	1,661	(809)
Other [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred income tax asset	(892)	3,982
Deferred income tax liability	(3,647)	7,702
Income tax effect of temporary differences [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred income tax asset	133,584	94,070
Deferred income tax liability	249,638	220,568
Deferred income tax (liability) asset	$ (116,054)	$ (126,498)

Income and mining taxes (Sche_6

Income and mining taxes (Schedule of temporary differences - deferred mining tax assets and liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Net deferred tax asset (liability)	$ (128,180)	$ (127,534)	$ (167,882)
Mining tax effect of temporary differences recognized [Member] | Canada [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Net deferred tax asset (liability)	(278)	7,829
Mining tax effect of temporary differences recognized [Member] | Peru [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Net deferred tax asset (liability)	$ (11,848)	$ (8,865)

Share capital (Narrative) (Deta

Share capital (Narrative) (Details) $ in Thousands	1 Months Ended				12 Months Ended
	Sep. 24, 2021USD ($)	Mar. 26, 2021USD ($)	Sep. 25, 2020USD ($)	Mar. 27, 2020USD ($)	Dec. 31, 2021$ / shares	Dec. 31, 2021USD ($)	Dec. 31, 2020USD ($)
Disclosure of classes of share capital [line items]
Dividends declared, amount per share | $ / shares					$ 0.01
Dividends paid | $	$ 2,056	$ 2,090	$ 1,979	$ 1,804		$ 4,146	$ 3,783

Share capital (Schedule of deta

Share capital (Schedule of detailed information about shares activity) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Disclosure of classes of share capital [line items]
Beginning Balance	$ 1,699,806	$ 1,848,123
Ending Balance	$ 1,476,828	$ 1,699,806
Share capital [Member]
Disclosure of classes of share capital [line items]
Balance, beginning of year	261,272,151	261,272,151
Beginning Balance	$ 1,777,340	$ 1,777,340
Exercise of options	$ 1,508	$ 0
Exercise of options (shares)	326,161	0
Balance, end of year	261,598,312	261,272,151
Ending Balance	$ 1,778,848	$ 1,777,340

Share-based compensation (Narra

Share-based compensation (Narrative) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021USD ($)Shareshares	Dec. 31, 2020USD ($)Shareshares
Disclosure of terms and conditions of share-based payment arrangement [line items]
Stock options granted | Share	509,385	1,581,385
Deferred Share Unit [Member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Liability related to share unit plans	$ 8,107	$ 8,719
Restricted Share Unit [Member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Liability related to share unit plans	$ 10,889	$ 10,449
Restricted share units vested, but unreleased and unpaid | shares	778,224	738,002
Performance Share Unit [Member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Liability related to share unit plans	$ 5,402	$ 2,030
Stock option plan [Member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Description of stock option plan, number of options authorized	The Company's stock option plan was approved in June 2005 and amended in May 2008 (the "Plan"). Under the amended Plan, the Company may grant to employees, officers, directors or consultants of the Company or its affiliates options to purchase up to a maximum of 13 million common shares of Hudbay. The Company has determined that the appropriate accounting treatment is to classify the stock options as equity settled transactions.
Maximum number of common shares purchaseable under stock option plan | shares	13,000,000

Share-based compensation (Sched

Share-based compensation (Schedule of number and weighted average exercise prices of other equity instruments) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021$ / shares	Dec. 31, 2021USD ($)	Dec. 31, 2020$ / shares	Dec. 31, 2020USD ($)
Deferred Share Unit [Member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of units granted during the year		173,929		465,889
Weighted average price (C$/unit) | $ / shares	$ 8.85		$ 4.10
Expenses recognized during the year		$ 1,459		$ 5,149
Payments made during the year		$ 2,053		$ 497
Restricted Share Unit [Member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of restricted share units, beginning of year		2,940,337		2,223,999
Number of units granted during the year		515,727		1,388,786
Credits for dividends		6,949		17,587
Number of units forfeited during the year		(133,804)		(44,678)
Number of units vested		(844,349)		(645,357)
Number of restricted share units, end of year		2,484,860		2,940,337
Weighted average price (C$/unit) | $ / shares	10.42		3.98
Expenses recognized during the year		$ 5,385		$ 6,750
Payments made during the year		$ 6,143		$ 2,646
Performance Share Unit [Member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of performance units, beginning of year		1,095,615		0
Number of units granted during the year		406,656		1,089,569
Credits for dividends		3,960		6,046
Number of performance units, end of year		1,506,231		1,095,615
Weighted average price (C$/unit) | $ / shares	$ 10.42		$ 3.97
Expenses recognized during the year		$ 3,382		$ 1,987
Payments made during the year		$ 0		$ 0

Share-based compensation (Sch_2

Share-based compensation (Schedule of number and weighted average exercise prices of share options) (Details)	12 Months Ended
	Dec. 31, 2021Share$ / shares	Dec. 31, 2020Share$ / shares
Disclosure of terms and conditions of share-based payment arrangement [abstract]
Number of shares subject to option, beginning of year | Share	1,563,189	0
Weighted average exercise price of share options outstanding at beginning of period | $ / shares	$ 3.77
Number of units granted during the year | Share	509,385	1,581,385
Weighted average exercise price of options granted | $ / shares	$ 10.42	$ 3.77
Number of shares subject to option, exercised | Share	(326,161)	0
Weighted average exercise price of options exercised | $ / shares	$ 3.76	$ 0
Stock options forfeited | Share	(87,125)	(18,196)
Weighted average exercise price of options forfeited | $ / shares	$ 5.79	$ 3.76
Number of shares subject to option, end of year | Share	1,659,288	1,563,189
Weighted average exercise price of share options outstanding at end of period | $ / shares	$ 5.71	$ 3.77

Share-based compensation (Sch_3

Share-based compensation (Schedule of weighted average fair value assumptions used in the Black-Scholes valuation) (Details)	12 Months Ended
	Dec. 31, 2021Month$ / shares	Dec. 31, 2020Month$ / shares
Disclosure of terms and conditions of share-based payment arrangement [abstract]
Weighted average share price at grant date (CAD)	$ 10.42	$ 3.77
Risk-free rate	1.02%	1.14%
Expected dividend yield	0.20%	0.50%
Expected stock price volatility (based on historical volatility)	60.50%	57.00%
Expected life of option (months) | Month	84	84
Weighted average per share fair value of stock options granted (CAD)	$ 6.06	$ 2.02

Share-based compensation (Sch_4

Share-based compensation (Schedule of range of exercise prices of share options) (Details)	12 Months Ended
	Dec. 31, 2021Share$ / shares	Dec. 31, 2020Share$ / shares	Dec. 31, 2019Share
Disclosure of range of exercise prices of outstanding share options [line items]
Number of options outstanding | Share	1,659,288	1,563,189	0
Weighted average exercise price	$ 5.71	$ 3.77
Range of exercise prices $3.76 - $3.92 [Member]
Disclosure of range of exercise prices of outstanding share options [line items]
Number of options outstanding | Share	1,176,399	1,156,189
Weighted average remaining contractual life (years)	5 years 1 month 24 days	6 years 1 month 24 days
Weighted average exercise price	$ 3.78	$ 3.77
Number of options exercisable | Share	191,651	0
Weighted average share price at exercise date	$ 3.79	$ 0
Range of exercise prices $3.76 - $3.92 [Member] | Bottom of range [Member]
Disclosure of range of exercise prices of outstanding share options [line items]
Weighted average exercise price	3.76	3.76
Range of exercise prices $3.76 - $3.92 [Member] | Top of range [Member]
Disclosure of range of exercise prices of outstanding share options [line items]
Weighted average exercise price	$ 3.92	$ 3.92
Range of exercise prices $$10.42 - $10.42 [Member]
Disclosure of range of exercise prices of outstanding share options [line items]
Number of options outstanding | Share	482,889
Weighted average remaining contractual life (years)	6 years 1 month 24 days
Weighted average exercise price	$ 10.42
Number of options exercisable | Share	0
Weighted average share price at exercise date	$ 0
Range of exercise prices $$10.42 - $10.42 [Member] | Bottom of range [Member]
Disclosure of range of exercise prices of outstanding share options [line items]
Weighted average exercise price	10.42
Range of exercise prices $$10.42 - $10.42 [Member] | Top of range [Member]
Disclosure of range of exercise prices of outstanding share options [line items]
Weighted average exercise price	$ 10.42

Earnings per share (Narrative)

Earnings per share (Narrative) (Details) - shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Basic earnings per share [abstract]
Weighted average stock options with potential future dilutive effect not included in calculation of diluted earnings per share	640,089	1,292,840
Diluted weighted average common shares outstanding	261,462,323	261,272,151

Earnings per share (Schedule of

Earnings per share (Schedule of earnings per share) (Details) - shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Basic earnings per share [abstract]
Basic and diluted weighted average common shares outstanding	261,462,323	261,272,151

Capital management (Narrative)

Capital management (Narrative) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statements [Line Items]
Long-term debt	$ 1,180,274	$ 1,135,675
Cash and cash equivalents	$ 270,989	$ 439,135	$ 396,146

Financial instruments (Narrativ

Financial instruments (Narrative) (Details) $ in Thousands, lb in Millions	12 Months Ended
	Dec. 31, 2021USD ($)lb$ / lbs	Dec. 31, 2020USD ($)lb$ / lbs
Disclosure of detailed information about financial instruments [line items]
Prepayment option - embedded derivative	$ 0	$ 49,754
Gold prepayment revaluation	$ (2,684)	$ (1,885)
Discount rate on streaming agreement	9.00%
Pounds of copper fixed for floating swaps | lb	72.8	43.4
Average price recorded for copper fixed for floating swaps | $ / lbs	4.34	3.22
Pounds of zinc forward sales contracts | lb	3.1	3.5
Derivative financial assets	$ 7,430	$ 2,736
Derivative financial liabilities	12,451	15,312
Gold prepayment liability	$ 140,008	$ 137,031
Deposits and other investments with Schedule 1 Canadian banks, as a percentage of total cash and cash equivalents	76.00%	90.00%
Percentage of entity's trade receivables that are insured	96.00%	95.00%
Credit insurance deductible	10.00%
Copper fixed for floating swaps [Member]
Disclosure of detailed information about financial instruments [line items]
Derivative financial liabilities	$ 5,440	$ 13,198
Non-hedge derivative zinc contracts [Member]
Disclosure of detailed information about financial instruments [line items]
Derivative financial assets	$ 419	$ 622
Non-hedge derivative zinc contracts [Member] | Bottom of range [member]
Disclosure of detailed information about financial instruments [line items]
Range of zinc forward sales contracts prices | $ / lbs	1.44	0.87
Non-hedge derivative zinc contracts [Member] | Top of range [member]
Disclosure of detailed information about financial instruments [line items]
Range of zinc forward sales contracts prices | $ / lbs	1.52	1.30
Provisional pricing - copper and zinc [Member]
Disclosure of detailed information about financial instruments [line items]
Derivative financial assets	$ 6,500	$ 21,295
Customer 1 [Member]
Disclosure of detailed information about financial instruments [line items]
Percentage of receivables that represent largest customers	29.00%	40.00%
Customer 2 [Member]
Disclosure of detailed information about financial instruments [line items]
Percentage of receivables that represent largest customers	23.00%	16.00%

Financial instruments (Schedule

Financial instruments (Schedule of fair value measurement) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of fair value measurement of assets [line items]
Cash and cash equivalents	$ 270,989	$ 439,135	$ 396,146
Non-hedge derivative assets	7,430	2,736
Prepayment option - embedded derivative	0	49,754
Investments	11,158	15,669
Deferred Rosemont acquisition consideration	17,805	25,961
Finance leases	78,002	63,514	$ 81,947
Agreements with communities	33,947	41,912
Wheaton refund liability	5,424	0
Senior unsecured notes	1,239,018	1,277,124
Gold prepayment liability	140,008	137,031
Non-hedge derivative liabilities	12,451	15,312
Fair value [Member]
Disclosure of fair value measurement of assets [line items]
Cash and cash equivalents	270,989	439,135
Restricted cash	437	337
Trade and other receivables	172,890	114,381
Non-hedge derivative assets	7,430	2,736
Investments	11,158	15,669
Total financial assets	462,904	572,258
Trade and other payables	189,179	209,413
Deferred Rosemont acquisition consideration	27,518	25,961
Agreements with communities	33,947	41,912
Wheaton refund liability	5,424	0
Senior unsecured notes	1,239,018	1,277,124
Gold prepayment liability	140,008	137,031
Non-hedge derivative liabilities	12,451	15,312
Total financial liabilities	1,647,545	1,706,753
Carrying Amounts [Member]
Disclosure of fair value measurement of assets [line items]
Cash and cash equivalents	270,989	439,135
Restricted cash	437	337
Trade and other receivables	172,890	114,381
Non-hedge derivative assets	7,430	2,736
Investments	11,158	15,669
Total financial assets	462,904	572,258
Trade and other payables	189,179	209,413
Deferred Rosemont acquisition consideration	27,518	25,961
Agreements with communities	36,273	40,787
Wheaton refund liability	5,424	0
Senior unsecured notes	1,185,805	1,139,695
Gold prepayment liability	140,008	137,031
Non-hedge derivative liabilities	12,451	15,312
Total financial liabilities	$ 1,596,658	$ 1,568,199

Financial instruments (Schedu_2

Financial instruments (Schedule of significant unobservable inputs used in fair value measurement of assets and liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Disclosure of fair value measurement of assets [line items]
Non-hedge derivatives	$ 7,430	$ 2,736
Investments at FVTPL	11,158	15,669
Financial assets measured at fair value	18,588	18,405
Non-hedge derivatives	12,451	15,312
Gold prepayment liability	140,008	137,031
Agreements with communities	33,947	41,912
Wheaton refund liability	5,424	0
Senior unsecured notes	1,239,018	1,277,124
Financial liabilities measured at fair value	1,430,848	1,471,379
Level 1 [Member]
Disclosure of fair value measurement of assets [line items]
Non-hedge derivatives	0	0
Investments at FVTPL	11,158	15,669
Financial assets measured at fair value	11,158	15,669
Non-hedge derivatives	0	0
Gold prepayment liability	0	0
Agreements with communities	0	0
Wheaton refund liability	0
Senior unsecured notes	1,239,018	1,277,124
Financial liabilities measured at fair value	1,239,018	1,277,124
Level 2 [Member]
Disclosure of fair value measurement of assets [line items]
Non-hedge derivatives	7,430	2,736
Investments at FVTPL	0	0
Financial assets measured at fair value	7,430	2,736
Non-hedge derivatives	12,451	15,312
Gold prepayment liability	140,008	137,031
Agreements with communities	0	0
Wheaton refund liability	0
Senior unsecured notes	0	0
Financial liabilities measured at fair value	152,459	152,343
Level 3 [Member]
Disclosure of fair value measurement of assets [line items]
Non-hedge derivatives	0	0
Investments at FVTPL	0	0
Financial assets measured at fair value	0	0
Non-hedge derivatives	0	0
Gold prepayment liability	0	0
Agreements with communities	33,947	41,912
Wheaton refund liability	5,424
Senior unsecured notes	0	0
Financial liabilities measured at fair value	$ 39,371	$ 41,912

Financial instruments (Schedu_3

Financial instruments (Schedule of net position consisted of contracts awaiting final pricing) (Details) - Embedded Derivatives [Member] lb in Thousands	Dec. 31, 2021lboz$ / OZ$ / lbs	Dec. 31, 2020lboz$ / OZ$ / lbs
Copper [Member]
Disclosure of risk management strategy related to hedge accounting [line items]
Sales awaiting final pricing | lb	75,681	47,901
Average YTD price ($/unit) | $ / lbs	4.42	3.52
Gold [Member]
Disclosure of risk management strategy related to hedge accounting [line items]
Sales awaiting final pricing | oz	27,304	18,106
Average YTD price ($/unit) | $ / OZ	1,828	1,894
Silver [Member]
Disclosure of risk management strategy related to hedge accounting [line items]
Sales awaiting final pricing | oz	125,800	123,380
Average YTD price ($/unit) | $ / OZ	23.33	26.35

Financial instruments (Schedu_4

Financial instruments (Schedule of detailed information about foreign currency risk) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of detailed information about financial instruments [line items]
Cash and cash equivalents	$ 270,989	$ 439,135	$ 396,146
Other financial assets	19,025	18,742
Other financial liabilities	(221,674)	(219,091)
Currency risk [Member] | Amounts Held In CAD [Member]
Disclosure of detailed information about financial instruments [line items]
Cash and cash equivalents	10,627	7,791
Trade and other receivables	595	31
Other financial assets	11,158	15,669
Trade and other payables	(6,347)	(6,104)
Other financial liabilities	0	0
Net financial asset (liability)	16,033	17,387
Currency risk [Member] | Amounts Held In USD [Member]
Disclosure of detailed information about financial instruments [line items]
Cash and cash equivalents	34,439	3,895
Trade and other receivables	71,458	43,316
Other financial assets	0	0
Trade and other payables	(3,001)	(1,419)
Other financial liabilities	0	0
Net financial asset (liability)	102,896	45,792
Currency risk [Member] | Amounts Held In PEN [Member]
Disclosure of detailed information about financial instruments [line items]
Cash and cash equivalents	6,992	4,141
Trade and other receivables	36,470	36,951
Other financial assets	0	0
Trade and other payables	(17,006)	(34,622)
Other financial liabilities	(36,273)	(40,787)
Net financial asset (liability)	$ (9,817)	$ (34,317)

Financial instruments (Schedu_5

Financial instruments (Schedule of foreign currency risk) (Details) - Currency risk [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
USD / CAD exchange rate [Member]
Disclosure of detailed information about financial instruments [line items]
Sensitivity analysis, variance, percentage	10.00%	10.00%
Effect of variance increase on after-tax profit	$ 4.8	$ 1.1
Effect of variance decrease on after-tax profit	$ (5.7)	$ (1.4)
USD / PEN exchange rate [Member]
Disclosure of detailed information about financial instruments [line items]
Sensitivity analysis, variance, percentage	10.00%	10.00%
Effect of variance increase on after-tax profit	$ 0.6	$ 2
Effect of variance decrease on after-tax profit	$ (0.7)	$ (2.5)

Financial instruments - (Schedu

Financial instruments - (Schedule of commodity price risk) (Details) - Commodity price risk [Member] $ in Millions	12 Months Ended
	Dec. 31, 2021USD ($)$ / lbs	Dec. 31, 2020USD ($)$ / lbs
Copper prices [Member]
Disclosure of detailed information about financial instruments [line items]
Sensitivity analysis, variance, price | $ / lbs	0.30	0.30
Effect of variance increase on after-tax profit	$ 0.5	$ (1.4)
Effect of variance decrease on after-tax profit	$ (0.5)	$ 1.4
Zinc prices [Member]
Disclosure of detailed information about financial instruments [line items]
Sensitivity analysis, variance, price | $ / lbs	0.10	0.10
Effect of variance increase on after-tax profit	$ 0.2	$ 0.3
Effect of variance decrease on after-tax profit	$ (0.2)	$ (0.3)

Financial instruments - (Sche_2

Financial instruments - (Schedule of share price risk) (Details) - Share price risk [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Disclosure of detailed information about financial instruments [line items]
Sensitivity analysis, variance, percentage	25.00%	25.00%
Effect of variance increase on after-tax profit	$ 2.8	$ 3.9
Effect of variance decrease on after-tax profit	$ (2.8)	$ (3.9)

Financial instruments - (Sche_3

Financial instruments - (Schedule of interest rate risk) (Details) - Interest rate risk [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Disclosure of detailed information about financial instruments [line items]
Sensitivity analysis, variance, percentage	2.00%	2.00%
Effect of variance increase on after-tax profit	$ 5.4	$ (29.2)
Effect of variance decrease on after-tax profit	$ (5.4)	$ 39.7

Financial instruments - (Sche_4

Financial instruments - (Schedule of liquidity risk) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of detailed information about financial instruments [line items]
Cash and cash equivalents	$ 270,989	$ 439,135	$ 396,146
Non-hedge derivative assets	7,430	2,736
Agreements with communities	33,947	41,912
Long-term debt, including embedded derivative	(1,180,274)	(1,135,675)
Gold prepayment obligation	(140,008)	(137,031)
Wheaton refund liability	(5,424)	0
Finance lease liabilities	(78,002)	(63,514)	$ (81,947)
Derivative financial liabilities	(12,451)	(15,312)
Carrying amount [Member]
Disclosure of detailed information about financial instruments [line items]
Cash and cash equivalents	270,989	439,135
Restricted cash	437	337
Trade and other receivables	172,890	114,381
Non-hedge derivative assets	7,430	2,736
Assets used to manage liquidity risk	451,746	556,589
Trade and other payables, including embedded derivative	(189,179)	(209,413)
Agreements with communities	(36,273)	(40,787)
Deferred Rosemont acquisition consideration	(27,518)	(25,961)
Long-term debt, including embedded derivative	(1,185,805)	(1,139,695)
Gold prepayment obligation	(140,008)	(137,031)
Wheaton refund liability	(5,424)
Non-derivative financial liabilities	(1,584,207)	(1,552,887)
Non-hedge derivative contracts	(12,451)	(15,312)
Derivative financial liabilities	(12,451)	(15,312)
Contractual cash flows [Member]
Disclosure of detailed information about financial instruments [line items]
Cash and cash equivalents	270,989	439,135
Restricted cash	437	337
Trade and other receivables	172,890	114,381
Non-hedge derivative assets	7,430	2,736
Assets used to manage liquidity risk	451,746	556,589
Trade and other payables, including embedded derivative	(189,179)	(209,413)
Agreements with communities	(52,497)	(58,837)
Deferred Rosemont acquisition consideration	(30,000)	(30,000)
Long-term debt, including embedded derivative	(1,614,686)	(1,726,904)
Gold prepayment obligation	(140,008)	(137,031)
Wheaton refund liability	(78,500)
Non-derivative financial liabilities	(2,104,870)	(2,162,185)
Non-hedge derivative contracts	(12,451)	(15,312)
Derivative financial liabilities	(12,451)	(15,312)
12 months or less [Member]
Disclosure of detailed information about financial instruments [line items]
Cash and cash equivalents	270,989	439,135
Restricted cash	437	337
Trade and other receivables	172,890	114,381
Non-hedge derivative assets	7,430	2,736
Assets used to manage liquidity risk	451,746	556,589
Trade and other payables, including embedded derivative	(189,179)	(209,413)
Agreements with communities	(9,282)	(12,097)
Deferred Rosemont acquisition consideration	(10,000)	0
Long-term debt, including embedded derivative	(68,348)	(87,966)
Gold prepayment obligation	(71,394)	0
Wheaton refund liability	0
Non-derivative financial liabilities	(348,203)	(309,476)
Non-hedge derivative contracts	(12,451)	(15,312)
Derivative financial liabilities	(12,451)	(15,312)
13-36 months [Member]
Disclosure of detailed information about financial instruments [line items]
Cash and cash equivalents	0	0
Restricted cash	0
Trade and other receivables	0	0
Non-hedge derivative assets	0	0
Assets used to manage liquidity risk	0	0
Trade and other payables, including embedded derivative	0	0
Agreements with communities	(9,719)	(9,483)
Deferred Rosemont acquisition consideration	(20,000)	(20,000)
Long-term debt, including embedded derivative	(136,696)	(168,188)
Gold prepayment obligation	(68,614)	(137,031)
Wheaton refund liability	0
Non-derivative financial liabilities	(235,029)	(334,702)
Non-hedge derivative contracts	0	0
Derivative financial liabilities	0	0
37-60 months [Member]
Disclosure of detailed information about financial instruments [line items]
Cash and cash equivalents	0	0
Restricted cash	0
Trade and other receivables	0	0
Non-hedge derivative assets	0	0
Assets used to manage liquidity risk	0	0
Trade and other payables, including embedded derivative	0	0
Agreements with communities	(5,220)	(6,578)
Deferred Rosemont acquisition consideration	0	(10,000)
Long-term debt, including embedded derivative	(717,767)	(742,125)
Gold prepayment obligation	0	0
Wheaton refund liability	0
Non-derivative financial liabilities	(722,987)	(758,703)
Non-hedge derivative contracts	0	0
Derivative financial liabilities	0	0
More than 60 months [Member]
Disclosure of detailed information about financial instruments [line items]
Cash and cash equivalents	0	0
Restricted cash	0
Trade and other receivables	0	0
Non-hedge derivative assets	0	0
Assets used to manage liquidity risk	0	0
Trade and other payables, including embedded derivative	0	0
Agreements with communities	(28,276)	(30,679)
Deferred Rosemont acquisition consideration	0	0
Long-term debt, including embedded derivative	(691,875)	(728,625)
Gold prepayment obligation	0	0
Wheaton refund liability	(78,500)
Non-derivative financial liabilities	(798,651)	(759,304)
Non-hedge derivative contracts	0	0
Derivative financial liabilities	$ 0	$ 0

Commitments and contingencies_2

Commitments and contingencies (Narrative) (Details) $ in Thousands	Dec. 31, 2021USD ($)
Canada [Member]
Statements [Line Items]
Capital commitments	$ 37,476
Canada [Member] | Amounts which can be terminated [Member]
Statements [Line Items]
Capital commitments	32,709
Peru [Member] | Amounts which can be terminated [Member]
Statements [Line Items]
Capital commitments	31,918
Rosemont project in Arizona [Member]
Statements [Line Items]
Capital commitments	180,441
Rosemont project in Arizona [Member] | Amounts which can be terminated [Member]
Statements [Line Items]
Capital commitments	$ 87,928

Commitments and contingencies -

Commitments and contingencies - (Schedule of maturity analysis of operating lease payments) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Disclosure of maturity analysis of operating lease payments [line items]
Minimum lease payments payable under non-cancellable operating lease	$ 21,723	$ 60,365
Within one year [Member]
Disclosure of maturity analysis of operating lease payments [line items]
Minimum lease payments payable under non-cancellable operating lease	19,092	58,173
After one year but not more than five years [Member]
Disclosure of maturity analysis of operating lease payments [line items]
Minimum lease payments payable under non-cancellable operating lease	2,631	2,192
More than five years [Member]
Disclosure of maturity analysis of operating lease payments [line items]
Minimum lease payments payable under non-cancellable operating lease	$ 0	$ 0

Related parties - (Schedule of

Related parties - (Schedule of Subsidiaries) (Details)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
HudBay Marketing & Sales Inc. [Member]
Disclosure of transactions between related parties [line items]
Beneficial ownership of ultimate controlling party (HudBay Minerals Inc.)	100.00%	100.00%
HudBay Peru Inc. [Member]
Disclosure of transactions between related parties [line items]
Beneficial ownership of ultimate controlling party (HudBay Minerals Inc.)	100.00%	100.00%
HudBay Peru S.A.C. [Member]
Disclosure of transactions between related parties [line items]
Beneficial ownership of ultimate controlling party (HudBay Minerals Inc.)	100.00%	100.00%
HudBay (BVI) Inc. [Member]
Disclosure of transactions between related parties [line items]
Beneficial ownership of ultimate controlling party (HudBay Minerals Inc.)	100.00%	100.00%
Hudbay Arizona Inc. [Member]
Disclosure of transactions between related parties [line items]
Beneficial ownership of ultimate controlling party (HudBay Minerals Inc.)	100.00%	100.00%
Rosemont Copper Company [Member]
Disclosure of transactions between related parties [line items]
Beneficial ownership of ultimate controlling party (HudBay Minerals Inc.)	100.00%	100.00%

Related parties - (Schedule o_2

Related parties - (Schedule of Information about key management personnel) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Disclosure of transactions between related parties [abstract]
Short-term employee benefits	$ 10,283	$ 7,951
Post-employment benefits	837	639
Long-term share-based awards	6,737	6,381
Total key management personnel compensation	$ 17,857	$ 14,971

Supplementary cash flow infor_3

Supplementary cash flow information (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Supplementary Cash Flow Information [Line Items]
Increase to property, plant and equipment assets due to remeasurements of decommissioning and restoration liabilities	$ 144,016	$ 46,792
Additions	49,695	17,759
Plant and equipment- ROU assets [Member] | Cost [Member]
Supplementary Cash Flow Information [Line Items]
Additions	49,695	17,759
Agreements With Communities [Member]
Supplementary Cash Flow Information [Line Items]
Additions	$ 22,796	$ 116,233

Supplementary cash flow infor_4

Supplementary cash flow information (Schedule of other cash generated from / (used in) operating activities) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Revenue And Expenses [Line Items]
Other cash generated from / (used in) operating activities	$ 3,166	$ 403
Loss on disposal of property, plant & equipment [Member]
Revenue And Expenses [Line Items]
Other cash generated from / (used in) operating activities	7,038	5,088
Closure cost adjustment - non-producing properties [Member]
Revenue And Expenses [Line Items]
Other cash generated from / (used in) operating activities	(4,602)	2,721
Share based compensation paid [Member]
Revenue And Expenses [Line Items]
Other cash generated from / (used in) operating activities	(6,782)	(3,143)
Pampacancha delivery obligation paid [Member]
Revenue And Expenses [Line Items]
Other cash generated from / (used in) operating activities	0	(10,856)
Restructuring - Manitoba [Member]
Revenue And Expenses [Line Items]
Other cash generated from / (used in) operating activities	6,947	0
Other [Member]
Revenue And Expenses [Line Items]
Other cash generated from / (used in) operating activities	$ 565	$ 6,593

Supplementary cash flow infor_5

Supplementary cash flow information (Schedule of change in non-cash working capital) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Supplementary Cash Flow Information [Abstract]
Trade and other receivables	$ (60,978)	$ (37,720)
Other financial assets/liabilities	(7,758)	4,077
Inventories	(32,752)	(2,867)
Prepaid expenses	1,663	(3,722)
Trade and other payables	(11,549)	36,247
Provisions and other liabilities	7,328	1,602
Increase (decrease) in working capital	$ (104,046)	$ (2,383)

Segmented information (Narrativ

Segmented information (Narrative) (Details)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Customer 1 [Member]
Disclosure of major customers [line items]
Percentage of entity's revenue	28.00%	36.00%
Customer 2 [Member]
Disclosure of major customers [line items]
Percentage of entity's revenue	11.00%	17.00%
Customer 3 [Member]
Disclosure of major customers [line items]
Percentage of entity's revenue	5.00%	13.00%
Customer 4 [Member]
Disclosure of major customers [line items]
Percentage of entity's revenue	5.00%	7.00%
Customer 5 [Member]
Disclosure of major customers [line items]
Percentage of entity's revenue	5.00%	7.00%
Customer 6 [Member]
Disclosure of major customers [line items]
Percentage of entity's revenue		5.00%
Customer 7 [Member]
Disclosure of major customers [line items]
Percentage of entity's revenue		5.00%
Customer 8 [Member]
Disclosure of major customers [line items]
Percentage of entity's revenue		5.00%

Segmented information (Schedule

Segmented information (Schedule of segments) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Disclosure of operating segments [line items]
Revenue from external customers	$ 1,501,998	$ 1,092,418
Cost of sales
Mine operating costs	819,582	691,591
Depreciation and amortization	357,924	361,827
Impairment - environmental obligation	193,473
Gross (loss) profit	131,019	39,000
Selling and administrative expenses	43,011	41,408
Exploration and evaluation expenses	39,961	17,196
Other expenses (income)	29,779	17,583
Results from operating activities	18,268	(37,187)
Net interest expense on long term debt	74,748	82,712
Accretion on streaming arrangements	42,654	56,670
Change in fair value of financial instruments	54,514	(29,370)
Other net finance costs	49,103	31,890
Loss before tax	(202,751)	(179,089)
Tax expense (recovery)	41,607	(34,505)
Loss for the year	(244,358)	(144,584)
Manitoba [Member]
Disclosure of operating segments [line items]
Revenue from external customers	740,454	615,699
Cost of sales
Mine operating costs	459,399	391,504
Depreciation and amortization	163,516	177,552
Impairment - environmental obligation	193,473
Gross (loss) profit	(75,934)	46,643
Selling and administrative expenses	0	0
Exploration and evaluation expenses	5,769	6,491
Other expenses (income)	10,620	8,382
Results from operating activities	(92,323)	31,770
Peru [Member]
Disclosure of operating segments [line items]
Revenue from external customers	761,544	476,719
Cost of sales
Mine operating costs	360,183	300,087
Depreciation and amortization	194,408	184,275
Impairment - environmental obligation	0
Gross (loss) profit	206,953	(7,643)
Selling and administrative expenses	0	0
Exploration and evaluation expenses	9,218	6,295
Other expenses (income)	10,491	4,901
Results from operating activities	187,244	(18,839)
Arizona [Member]
Disclosure of operating segments [line items]
Revenue from external customers	0	0
Cost of sales
Mine operating costs	0	0
Depreciation and amortization	0	0
Impairment - environmental obligation	0
Gross (loss) profit	0	0
Selling and administrative expenses	0	0
Exploration and evaluation expenses	24,935	3,870
Other expenses (income)	13,399	2,066
Results from operating activities	(38,334)	(5,936)
Corporate and other activities [Member]
Disclosure of operating segments [line items]
Revenue from external customers	0	0
Cost of sales
Mine operating costs	0	0
Depreciation and amortization	0	0
Impairment - environmental obligation	0
Gross (loss) profit	0	0
Selling and administrative expenses	43,011	41,408
Exploration and evaluation expenses	39	540
Other expenses (income)	(4,731)	2,234
Results from operating activities	$ (38,319)	$ (44,182)

Segmented information (Schedu_2

Segmented information (Schedule of segments, assets and liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Disclosure of operating segments [line items]
Total assets	$ 4,616,231	$ 4,666,645
Total liabilities	3,139,403	2,966,839
Property, plant and equipment	3,740,966	3,731,655
Manitoba [Member]
Disclosure of operating segments [line items]
Total assets	812,137	801,691
Total liabilities	655,095	562,013
Property, plant and equipment	706,330	699,884
Peru [Member]
Disclosure of operating segments [line items]
Total assets	2,624,251	2,535,939
Total liabilities	1,023,186	973,756
Property, plant and equipment	2,256,687	2,290,097
Arizona [Member]
Disclosure of operating segments [line items]
Total assets	745,371	718,982
Total liabilities	75,782	76,926
Property, plant and equipment	735,127	709,939
Corporate and other activities [Member]
Disclosure of operating segments [line items]
Total assets	434,472	610,033
Total liabilities	1,385,340	1,354,144
Property, plant and equipment	42,822	31,735
Corporate and other activities [Member] | Nevada [Member]
Disclosure of operating segments [line items]
Property, plant and equipment	$ 28,300	$ 27,500

Segmented information (Schedu_3

Segmented information (Schedule of segments, additions to property, plant and equipment) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Disclosure of operating segments [line items]
Additions to property, plant and equipment	$ 425,761	$ 386,790
Manitoba [Member]
Disclosure of operating segments [line items]
Additions to property, plant and equipment	224,300	159,313
Peru [Member]
Disclosure of operating segments [line items]
Additions to property, plant and equipment	163,604	208,805
Arizona [Member]
Disclosure of operating segments [line items]
Additions to property, plant and equipment	25,982	18,640
Corporate and other activities [Member]
Disclosure of operating segments [line items]
Additions to property, plant and equipment	$ 11,875	$ 32

Segmented information (Schedu_4

Segmented information (Schedule of geographical areas, revenue by customer location) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Disclosure of operating segments [line items]
Revenue from external customers	$ 1,501,998	$ 1,092,418
Canada [Member]
Disclosure of operating segments [line items]
Revenue from external customers	515,967	422,403
China [Member]
Disclosure of operating segments [line items]
Revenue from external customers	349,143	215,278
United States [Member]
Disclosure of operating segments [line items]
Revenue from external customers	219,853	206,906
Switzerland [Member]
Disclosure of operating segments [line items]
Revenue from external customers	166,261	55,703
Peru [Member]
Disclosure of operating segments [line items]
Revenue from external customers	82,598	56,437
Singapore [Member]
Disclosure of operating segments [line items]
Revenue from external customers	80,668	29,314
Germany [Member]
Disclosure of operating segments [line items]
Revenue from external customers	37,335	11,725
Japan [Member]
Disclosure of operating segments [line items]
Revenue from external customers	20,524	0
Chile [Member]
Disclosure of operating segments [line items]
Revenue from external customers	10,773	9,967
Philippines [Member]
Disclosure of operating segments [line items]
Revenue from external customers	4,050	77,575
Other [Member]
Disclosure of operating segments [line items]
Revenue from external customers	$ 14,826	$ 7,110