Wheaton Precious Metals (WPM) 40-F 30 Mar 20 2019 FY Annual report (Canada) Financial data

Cover Page

Cover Page	12 Months Ended
	Dec. 31, 2019shares
Cover [Abstract]
Document Type	40-F
Document Annual Report	true
Amendment Flag	false
Document Period End Date	Dec. 31, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY
Trading Symbol	WPM
Document Registration Statement	false
Entity Registrant Name	WHEATON PRECIOUS METALS CORP.
Entity Central Index Key	0001323404
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity Emerging Growth Company	false
Security Exchange Name	NYSE
Entity Common Stock, Shares Outstanding	448,150,003
Entity Address, State or Province	DE
Entity Interactive Data Current	Yes
Title of 12(b) Security	Common Shares

Consolidated Statements of Earn

Consolidated Statements of Earnings - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Profit or loss [abstract]
Sales	$ 861,332	$ 794,012
Cost of sales
Cost of sales, excluding depletion	258,559	245,794
Depletion	256,826	252,287
Total cost of sales	515,385	498,081
Gross margin	345,947	295,931
General and administrative	54,507	51,650
Impairment of mineral stream interests	165,912
Earnings from operations	125,528	244,281
Gain on disposal of mineral stream interest	0	(245,715)
Other (income) expense	(274)	5,826
Earnings before finance costs and income taxes	125,802	484,170
Finance costs	48,730	41,187
Earnings before income taxes	77,072	442,983
Income tax recovery (expense)	9,066	(15,868)
Net earnings	$ 86,138	$ 427,115
Basic earnings per share	$ 0.19	$ 0.96
Diluted earnings per share	$ 0.19	$ 0.96
Weighted average number of shares outstanding
Basic	446,021	443,407
Diluted	446,930	443,862

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018
Statement of comprehensive income [abstract]
Net earnings		$ 86,138	$ 427,115
Items that will not be reclassified to net earnings
Gain (loss) on LTIs	[1]	161,936	(39,985)
Income tax recovery (expense) related to LTIs	[1]	(9,623)	(2,662)
Total other comprehensive income (loss)	[2]	152,313	(42,647)
Total comprehensive income		$ 238,451	$ 384,468
[1]	LTIs = long-term investments – common shares held.
[2]	Definitions as follows: “OCI” = Other Comprehensive Income (Loss); “SBC” = Equity Settled Stock Based Compensation; “Options” = Share Purchase Options; “RSUs” = Restricted Share Units; “LTI’s” = Long-Term Investments; “Warrants” = Share Purchase Warrants.

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Current assets
Cash and cash equivalents	$ 103,986	$ 75,767
Accounts receivable	7,138	2,186
Current taxes receivable	124	210
Other	43,504	1,541
Total current assets	154,752	79,704
Non-current assets
Mineral stream interests	5,734,106	6,156,839
Early deposit mineral stream interests	31,741	30,241
Mineral royalty interest	3,036	9,107
Long-term equity investments	309,757	164,753
Investment in associates	882	2,562
Convertible notes receivable	21,856	12,899
Property, plant and equipment	7,311	3,626
Other	14,566	10,315
Total non-current assets	6,123,255	6,390,342
Total assets	6,278,007	6,470,046
Current liabilities
Accounts payable and accrued liabilities	11,794	19,883
Current taxes payable	0	3,361
Current portion of performance share units	10,668	5,578
Current portion of lease liabilities	724	0
Other	41,514	19
Total current liabilities	64,700	28,841
Non-current liabilities
Bank debt	874,500	1,264,000
Lease liabilities	3,528	0
Deferred income taxes	148	111
Performance share units	8,401	5,178
Pension liability	810	0
Total non-current liabilities	887,387	1,269,289
Total liabilities	952,087	1,298,130
Shareholders' equity
Issued capital	3,599,203	3,516,437
Reserves	160,701	7,893
Retained earnings	1,566,016	1,647,586
Total shareholders' equity	5,325,920	5,171,916
Total liabilities and shareholders' equity	$ 6,278,007	$ 6,470,046

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Operating activities
Net earnings	$ 86,138	$ 427,115
Adjustments for Depreciation and depletion	258,730	253,343
Gain on disposal of mineral stream interest	0	(245,715)
Gain on disposal of mineral royalty interest	(2,929)	0
Impairment charges	167,561	0
Interest expense	44,942	35,839
Equity settled stock based compensation	5,691	5,432
Performance share units	7,834	9,517
Pension expense	810	0
Income tax expense (recovery)	(9,066)	15,868
Loss on fair value adjustment of share purchase warrants held	16	124
Share in losses of associate	164	432
Fair value (gain) loss on convertible note receivable	1,043	2,878
Investment income recognized in net (loss) earnings	(875)	(829)
Other	20	(46)
Change in non-cash working capital	(11,837)	8,964
Cash generated from operations before income taxes and interest	548,242	512,922
Income taxes paid	(5,380)	(960)
Interest paid	(42,059)	(35,373)
Interest received	817	824
Cash generated from operating activities	501,620	477,413
Financing activities
Bank debt repaid	(389,500)	(330,500)
Bank debt drawn	0	824,500
Credit facility extension fees	(1,106)	(1,205)
Share purchase options exercised	37,038	1,027
Lease payments	(637)	0
Dividends paid	(129,986)	(132,915)
Cash (used for) generated from financing activities	(484,191)	360,907
Investing activities
Mineral stream interests	(183)	(1,116,955)
Early deposit mineral stream interests	(1,500)	(8,709)
Proceeds on disposal of mineral royalty interest	9,000	0
Net proceeds on disposal of mineral stream interests	0	226,000
Acquisition of long-term investments	(909)	(5,863)
Acquisition of convertible note receivable	(10,000)	0
Investment in associate	(133)	0
Proceeds on disposal of long-term investments	17,824	47,734
Investment in subscription rights	(1,524)	0
Dividend income received	59	80
Other	(2,004)	(3,613)
Cash used for investing activities	10,630	(861,326)
Effect of exchange rate changes on cash and cash equivalents	160	252
Increase (decrease) in cash and cash equivalents	28,219	(22,754)
Cash and cash equivalents, beginning of year	75,767	98,521
Cash and cash equivalents, end of year	$ 103,986	$ 75,767

Consolidated Statements of Shar

Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands		Total	Number of Shares [member]		Issued Capital [member]	Share Purchase Warrants Reserve [member]	Share Purchase Options Reserve [member]	Reserves Restricted Share Units Reserve [member]	LTI revaluation reserve (net of tax) [member]		Total Reserves [member]		Retained Earnings [member]
Balance at beginning of period at Dec. 31, 2017		$ 4,899,664			$ 3,472,029	$ 83,077	$ 28,799	$ 5,178	$ (40,047)	[1]	$ 77,007		$ 1,350,628
Balance, shares at beginning of period at Dec. 31, 2017		442,724,309	442,724,000
Total comprehensive income
Net earnings		$ 427,115											427,115
OCI	[1]	(42,647)							(42,647)		(42,647)
Total comprehensive income (loss)		384,468							(42,647)	[1]	(42,647)		427,115
Income tax recovery (expense)		14,389			14,389
SBC expense	[1]	5,432					2,401	3,031			5,432
Options exercised	[1]	$ 878			1,076		(198)				(198)
Options exercised, shares		46,800	47,000	[1]
RSUs released	[1]				2,239			(2,239)			(2,239)
RSUs released, shares		104,178	104,000	[1]
Dividends (Note 19.2)		$ (132,915)			26,704								(159,619)
Dividends (Note 19.2), shares		1,461,074	1,461,000
Realized gain on disposal of LTIs (Note 16)		$ 34,061							(29,462)	[1]	(29,462)	[1]	29,462	[1]
Balance end of period at Dec. 31, 2018		$ 5,171,916			$ 3,516,437	83,077	31,002	5,970	(112,156)	[1]	7,893		1,647,586
Balance, shares at end of period at Dec. 31, 2018		444,336,361	444,336,000		444,336,361
Total comprehensive income
Net earnings		$ 86,138											86,138
OCI	[1]	152,313							152,313		152,313
Total comprehensive income (loss)		238,451							152,313	[1]	152,313		86,138
Income tax recovery (expense)		376			$ 376
SBC expense	[1]	5,691					2,474	3,217			5,691
Options exercised	[1]	$ 39,473			48,939		(9,466)				(9,466)
Options exercised, shares		2,039,735	2,040,000	[1]
RSUs released	[1]				2,782			(2,782)			(2,782)
RSUs released, shares		133,670	134,000	[1]
Dividends (Note 19.2)		$ (129,987)			30,669								(160,656)
Dividends (Note 19.2), shares		1,261,667	1,261,000
Realized gain on disposal of LTIs (Note 16)		$ (7,282)							7,052	[1]	7,052	[1]	(7,052)	[1]
Balance end of period at Dec. 31, 2019		$ 5,325,920			$ 3,599,203	$ 83,077	$ 24,010	$ 6,405	$ 47,209	[1]	$ 160,701		$ 1,566,016
Balance, shares at end of period at Dec. 31, 2019		447,771,433	447,771,000		447,771,433
[1]	Definitions as follows: “OCI” = Other Comprehensive Income (Loss); “SBC” = Equity Settled Stock Based Compensation; “Options” = Share Purchase Options; “RSUs” = Restricted Share Units; “LTI’s” = Long-Term Investments; “Warrants” = Share Purchase Warrants.

Description of Business and Nat

Description of Business and Nature of Operations	12 Months Ended
	Dec. 31, 2019
Text block [abstract]
Description of Business and Nature of Operations	1. Description of Business and Nature of Operations Wheaton Precious Metals Corp. is a precious metal streaming company which generates its revenue primarily from the sale of precious metals (gold, silver and palladium). Wheaton Precious Metals Corp. (“Wheaton” or the “Company”), which is the ultimate parent company of its consolidated group, is incorporated and domiciled in Canada, and its principal place of business is at Suite 3500 - 1021 West Hastings Street, Vancouver, British Columbia, V6E 0C3. The Company trades on the Toronto Stock Exchange (“TSX”) and the New York Stock Exchange (“NYSE”) under the symbol WPM. The Company has entered into 23 long-term purchase agreements (three of which are early deposit agreements), with 17 different mining companies, for the purchase of precious metals and cobalt (“precious metal purchase agreements” or “PMPA”) relating to 20 mining assets which are currently operating, 9 which are at various stages of development and 1 which has been placed in care and maintenance, located in 11 countries. Pursuant to the PMPAs, Wheaton acquires metal production from the counterparties for an initial upfront payment plus an additional cash payment for each ounce or pound delivered which is fixed by contract, generally at or below the prevailing market price. The consolidated financial statements of the Company for the year ended December 31, 2019 were authorized for issue as of March 11, 2020 in accordance with a resolution of the Board of Directors.

Basis of Presentation and State

Basis of Presentation and Statement of Compliance	12 Months Ended
	Dec. 31, 2019
Text block [abstract]
Basis of Presentation and Statement of Compliance	2. Basis of Presentation and 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”) on a historical cost basis, except for financial assets which are not held for the purpose of collecting contractual cash flows on specified dates and derivative assets and derivative liabilities which have been measured at fair value as at the relevant balance sheet date. The consolidated financial statements are presented in United States (“US”) dollars, which is the Company’s functional currency, and all values are expressed in thousands unless otherwise noted. References to “Cdn$” refer to Canadian dollars. The preparation of financial statements in accordance with IFRS requires the use of certain accounting estimates. It also requires management to exercise judgment in applying the Company’s accounting policies. The areas involving a higher degree of judgment or complexity, or areas where assumptions and estimates are significant to the financial statements are disclosed in Note 4.

Significant Accounting Policies

Significant Accounting Policies	12 Months Ended
	Dec. 31, 2019
Text block [abstract]
Significant Accounting Policies	3. Significant Accounting Policies 3.1. New Accounting Standards Effective in 2019 IFRS 16 – Leases: General Impact of Application of IFRS 16 - Leases On January 1, 2019, the Company adopted IFRS 16 – Leases (“IFRS16”), which supersedes IAS 17 – Leases (“IAS 17”). IFRS 16 removes the distinction between operating leases and finance leases and instead has all leases accounted for as a finance lease which requires the recognition of a right-of-use right-of-use The Company determined that it had two leases which are subject to the provisions of IFRS 16, specifically related to its offices in Vancouver, Canada and the Cayman Islands. As a result, at January 1, 2019, the Company recognized an additional $5 million of right-of-use The Company has applied the new standard on a modified retrospective basis with no restatement of the prior periods. A reconciliation of the lease commitment relative to these two leases as reported on the financial statements for the year ended December 31, 2018 and the lease liability which has been reflected on the balance sheet effective January 1, 2019 is as follows: (in thousands) Total lease commitment as disclosed at December 31, 2018 $ 3,785 Extension option reasonably certain to be exercised 1 1,530 Less: Discounting using the incremental borrowing rate 2 (636 ) Lease liability as at January 1, 2019 $ 4,679 Lease liability is comprised of: Current portion $ 637 Long-term portion 4,042 Lease liability as at January 1, 2019 $ 4,679 1) The Company’s office lease in the Cayman Islands contains two optional extension periods. Upon applying IFRS 16, the Company concluded it was reasonably certain to exercise the first extension period. The second extension period, which covers a term of 5 years, was not included in the calculation of the lease liability. 2) The future cash outflows were discounted using the Company’s estimated incremental borrowing rate ranging from 3.9764% to 4.3340%. IFRIC 23 – Uncertainty over Income Tax Treatments: On January 1, 2019, the Company adopted IFRIC 23 – Uncertainty over Income Tax Treatments. IFRIC 23 provides guidance on the accounting for current and deferred tax liabilities and assets in circumstances in which there is uncertainty over income tax treatments. The adoption of this guidance did not have a material impact on the Company’s Consolidated Statement of Earnings. 3.2. Principles of Consolidation The consolidated financial statements include the accounts of the Company and its 100% owned subsidiaries Wheaton Precious Metals International Ltd., Silver Wheaton Luxembourg S.a.r.l. and Wheaton Precious Metals (Cayman) Co. Subsidiaries are fully consolidated from the date on which the Company obtains a controlling interest. Control is defined as an investor’s power over an investee with exposure, or rights, to variable returns from the investee and the ability to affect the investor’s returns through its power over the investee. Subsidiaries are included in the consolidated financial results of the Company from the effective date of acquisition up to the effective date of disposition or loss of control. The financial statements of the subsidiaries are prepared for the same reporting period as the parent company, using consistent accounting policies. Balances, transactions, income and expenses between the Company and its subsidiaries are eliminated on consolidation. 3.3. Cash and Cash Equivalents Cash and cash equivalents include cash and highly liquid money market investments including short-term deposits, treasury bills, commercial paper, bankers’ depository notes and bankers’ acceptances with terms to maturity of less than three months. 3.4. Revenue Recognition Revenue relating to the sale of precious metals is recognized when control of the precious metal is transferred to the customer in an amount that reflects the consideration the Company expects to receive in exchange for those products. In determining whether the Company has satisfied a performance obligation, it considers the indicators of the transfer of control, which include, but are not limited to, whether: the Company has a present right to payment; the customer has legal title to the asset; the Company has transferred physical possession of the asset to the customer; and the customer has the significant risks and rewards of ownership of the asset. Under certain PMPAs, precious metal is acquired from the mine operator in the form of gold, silver or palladium credits, which is then sold through a network of third party brokers or dealers. Revenue from precious metal credit sales is recognized at the time of the sale of such credits, which is also the date that control of the precious metal is transferred to the customer. The Company will occasionally enter into forward contracts in relation to precious metal deliveries that it is highly confident will occur within a given quarter. No forward contracts were outstanding at December 31, 2019 or December 31, 2018. The sales price is fixed at the delivery date based on either the terms of these short-term forward sales contracts or the spot price of the precious metal. Under certain PMPAs, precious metal is acquired from the mine operator in concentrate form, which is then sold under the terms of the concentrate sales contracts to third-party smelters or traders. Where the Company acquires precious metals in concentrate form, final precious metal prices are set on a specified future quotational period (the “Quotational Period”) pursuant to the concentrate sales contracts with third-party smelters, typically one to three months after the shipment date, based on market prices for precious metals. The contracts, in general, provide for a provisional payment based upon provisional assays and quoted precious metal prices. Final settlement is based upon the average applicable price for the Quotational Period applied to the actual number of precious metal ounces recovered calculated using confirmed smelter weights and settlement assays. Revenues and the associated cost of sales are recorded on a gross basis under these contracts at the time title passes to the buyer, which is also the date that control of the precious metal is transferred to the customer. The Company has concluded that the adjustments relating to the final assay results for the quantity of concentrate sold and the retroactive pricing adjustment for the Quotational Period are not significant and do not constrain the recognition of revenue. 3.5. Financial Instruments Financial assets and financial liabilities are recognized when the Company becomes a party to the contractual provisions of the instrument. Financial assets and financial liabilities are initially measured at fair value. Transaction costs that are directly attributable to the acquisition or issue of financial assets and financial liabilities (other than financial assets and financial liabilities at fair value through net earnings) are added to or deducted from the fair value of the financial assets or financial liabilities, as appropriate, on initial recognition. Transaction costs directly attributable to the acquisition of financial assets or financial liabilities at fair value through net earnings are recognized immediately in net earnings. 3.6. Financial Assets Financial assets are subsequently measured at either amortized cost or fair value, depending on the classification of the financial assets. Financial Assets at Fair Value Through Other Comprehensive Income (“FVTOCI”) The Company’s long-term investments in common shares held are for long-term strategic purposes and not for trading. Upon the adoption of IFRS 9, Financial Instruments (“IFRS 9”), the Company made an irrevocable election to designate these long-term investments in common shares held as FVTOCI as it believes that this provides a more meaningful presentation for long-term strategic investments, rather than reflecting changes in fair value in net earnings. Long-term investments in common shares held are initially measured at fair value. Subsequently, they are measured at fair value with gains and losses arising from changes in fair value recognized as a component of other comprehensive income (“OCI”) and accumulated in the long-term investment revaluation reserve. The cumulative gain or loss will not be reclassified to net earnings on disposal of these long-term investments but is reclassified to retained earnings. Dividends on these long-term investments in common shares held are recognized as a component of net earnings in the period they are received under the classification Other (Income) Expense. Financial Assets at Fair Value Through Net Earnings (“FVTNE”) Cash and cash equivalents are stated at FVTNE. Warrants held by the Company for long-term investment purposes are classified as FVTNE. These warrants are measured at fair value at the end of each reporting period, with any gains or losses arising on remeasurement recognized as a component of net earnings under the classification Other (Income) Expense. Convertible notes receivable (Note 15) are classified as FVTNE and are measured at fair value at the end of each reporting period by discounting the stream of future interest and principal payments at the rate of interest prevailing at the balance sheet date for instruments of similar term and risk (the market interest rate), and adding this value to the value of the convertibility feature which is estimated using a Black-Scholes model based on assumptions including risk free interest rate, expected dividend yield, expected volatility and expected remaining life of the respective convertible notes receivable. The resulting gains or losses (if any) arising on remeasurement is recognized as a component of net earnings under the classification Other (Income) Expense. As discussed in Note 3.4, the Company’s provisionally priced sales contain an embedded derivative that is reflected at fair value at the end of each reporting period. Fair value gains and losses related to the embedded derivative are included in revenue in the period they occur. Financial Assets at Amortized Cost The non-revolving non-interest non-revolving Foreign Exchange Gains and Losses The fair value of financial assets denominated in a foreign currency is determined in that foreign currency and translated at the spot rate at the end of each reporting period. The foreign exchange component forms part of its fair value gain or loss. Therefore, ● For financial assets that are classified as FVTNE, the foreign exchange component is recognized as a component of net earnings; ● For financial assets that are classified as FVTOCI, the foreign exchange component is recognized as a component of OCI; and ● For financial assets that are denominated in a foreign currency and are measured at amortized cost at the end of each reporting period, the foreign exchange gains and losses are determined based on the amortized cost of the instruments and are recognized as a component of net earnings. Derecognition of Financial Assets The Company derecognizes a financial asset only when the contractual rights to cash flows from the asset expire, or when it transfers the financial asset and substantially all the risks and rewards of ownership of the asset to another entity. If the Company neither transfers nor retains substantially all the risks and rewards of ownership and continues to control the transferred asset, the Company recognizes its retained interest in the asset and an associated liability for amounts it may have to pay. If the Company retains substantially all the risks and rewards of ownership of a transferred financial asset, the Company continues to recognize the financial asset and also recognizes a collateralized borrowing for the proceeds received. On derecognition of a financial asset that is classified as FVTOCI, the cumulative gain or loss (net of tax) previously accumulated in the long-term investment revaluation reserve is not reclassified to net earnings, but is reclassified to retained earnings. 3.7. Financial Liabilities and Equity Instruments Debt and equity instruments issued by the Company are classified as either financial liabilities or as equity in accordance with the substance of the contractual arrangements and the definition of a financial liability and equity instrument. All financial liabilities are subsequently measured at amortized cost using the effective interest method or at FVTNE, depending on the classification of the instrument. Equity Instruments An equity instrument is a contract that evidences a residual interest in the assets of an entity after deducting all of its liabilities. Equity instruments issued by the Company are recognized at the proceeds received less direct issue costs (net of any current or deferred income tax recovery attributable to such costs). Share Purchase Warrants Issued Share purchase warrants issued with an exercise price denominated in the Company’s functional currency (US dollars) are considered equity instruments with the consideration received reflected within shareholders’ equity under the classification of share purchase warrants reserve. Upon exercise, the original consideration is reallocated from share purchase warrants reserve to issued share capital along with the associated exercise price. Bank Debt Bank debt is initially measured at fair value, net of transaction costs, and is subsequently measured at amortized cost using the effective interest method. The effective interest method is a method of calculating the amortized cost of a financial liability and of allocating interest expense over the relevant period. The effective interest rate is the rate that exactly discounts estimated future cash payments through the expected life of the financial liability, or (where appropriate) a shorter period, to the net carrying amount on initial recognition. Other Financial Liabilities Accounts payable and accrued liabilities are stated at amortized cost, which approximate fair values due to the short terms to maturity. Foreign Exchange Gains and Losses The fair value of financial liabilities denominated in a foreign currency is determined in that foreign currency and translated at the spot rate at the end of each reporting period. Therefore, ● For financial liabilities that are denominated in a foreign currency and are measured at amortized cost at the end of each reporting period, the foreign exchange gains and losses are determined based on the amortized cost of the instruments and are recognized as a component of net earnings; and ● For financial liabilities that are classified as FVTNE, the foreign exchange component forms part of the fair value gains or losses and is recognized as a component of net earnings. Derecognition of Financial Liabilities The Company derecognizes financial liabilities when the Company’s obligations are discharged, cancelled or they expire. The difference between the carrying amount of the financial liability derecognized and the consideration paid and payable, including any non-cash 3.8. Mineral Stream Interests Agreements for which settlement is called for in gold, silver, palladium or cobalt, the amount of which is based on production at the mines, are stated at cost less accumulated depletion and accumulated impairment charges, if any. The cost of the asset is comprised of its purchase price, any closing costs directly attributable to acquiring the asset, and, for qualifying assets, borrowing costs. The purchase price is the aggregate cash amount paid and the fair value of any other non-cash Depletion The cost of these mineral stream interests is separately allocated to reserves, resources and exploration potential. The value allocated to reserves is classified as depletable and is depleted on a unit-of-production non-depletable Asset Impairment Management considers each PMPA to be a separate cash generating unit (“CGU”), which is the lowest level for which cash inflows are largely independent of those of other assets. At the end of each reporting period, the Company assesses each PMPA to determine whether any indication of impairment exists. If such an indication exists, the recoverable amount of the PMPA is estimated in order to determine the extent of the impairment (if any). The recoverable amount of each PMPA is the higher of fair value less cost of disposal (“FVLCD”) and value in use (“VIU”). In determining the recoverable amounts of each of the Company’s CGU’s, the Company uses the FVLCD as this will generally be greater than or equal to the VIU. To determine the FVLCD that could be received from each PMPA in an arm’s length transaction at the measurement date, the Company estimates a range of potential values using the net asset value (“NAV”) methodology and the net present value (“NPV”) methodology (as described below), and then selects a value within this range which is the most representative of the estimated recoverable amount of the stream. NAV is estimated by using an appropriate discount rate to calculate the present value of the expected future cash flows associated with each mineral category. The values are adjusted for each mineral category dependent on the likelihood of conversion from resources to reserves. A market multiple is applied to the NAV computed in order to assess the estimated fair value. Precious metal companies typically trade at a market capitalization that is based on a multiple of their underlying NAV, with this market multiple being generally understood to take account of a variety of additional value and risk factors such as the ability to find and produce more metal than what is currently included in the life of mine plan, the benefit of precious metal price optionality, the potential remaining mine life and adjustments for relative mine and country risk. Consequently, a market participant would generally apply a NAV multiple when estimating the fair value of a precious metal interest. NPV is estimated by using a nominal discount rate to calculate the present value of expected future cash flows. The expected future cash flows are management’s best estimates of expected future revenues and costs. Under each valuation methodology, expected future revenues reflect an estimate of future payable production for each mine at which the Company has a PMPA based on detailed life of mine plans received from each of the partners. Expected future revenues also reflect management’s estimated long-term metal prices. Estimated future cash costs are generally fixed based on the terms of each PMPA as disclosed in Note 29. If the carrying amount of the PMPA exceeds its recoverable amount, the PMPA is considered impaired and an impairment charge is reflected as a component of net earnings so as to reduce the carrying amount to its recoverable value. A previously recognized impairment charge is reversed only if there has been an indicator of a potential impairment reversal and the resulting assessment of the PMPA’s recoverable amount exceeds its carrying value. If this is the case, the carrying amount of the PMPA is increased to its recoverable amount. The increased amount cannot exceed the carrying amount that would have been determined, net of depletion, had no impairment charge been recognized for the PMPA in prior years. Such reversal is reflected as a component of net earnings. 3.9. Investments in Associates Investments over which the Company exercises significant influence and that the Company does not control or jointly control are associates. Investments in associates are accounted for using the equity method, except when classified as held for sale. The equity method involves recording the initial investment at cost and subsequently adjusting the carrying value of the investment for the Company’s proportionate share of the profit or loss, other comprehensive income or loss and any other changes in the associate’s net assets such as dividends. The Company’s proportionate share of the associate’s profit or loss and other comprehensive income or loss is based on its most recent publicly available financial statements. Adjustments are made to align any inconsistencies between the Company’s accounting policies and the associate’s policies before applying the equity method. Adjustments are also made to account for depreciable assets based on their fair values at the acquisition date of the investment and for any impairment losses recognized by the associate. If the Company’s share of the associate’s losses equals or exceeds the Company’s investment in the associate, recognition of further losses is discontinued. After the Company’s interest is reduced to zero, additional losses will be provided for and a liability recognized only to the extent that the Company has incurred legal or constructive obligations to provide additional funding or make payments on behalf of the associate. If the associate subsequently reports profits, the Company resumes recognizing the Company’s share of those profits only after the Company’s share of the profits equals the Company’s share of losses not recognized. At each balance sheet date, management considers whether there is objective evidence of impairment in associates. If there is such evidence, management determines the amount of impairment to record, if any, in relation to the associate. 3.10. Borrowing and Debt Issue Costs Borrowing costs allocable to qualifying assets, which are assets that necessarily take a substantial period of preparation for their intended use, are capitalized and included in the carrying amounts of the related assets until such time as the assets are substantially ready for their intended use. Borrowing costs that do not relate to the acquisition or construction of qualifying assets are reflected as a component of net earnings under the classification Finance Costs, as incurred. Debt issue costs on non-revolving 3.11. Stock Based Payment Transactions The Company recognizes a stock based compensation expense for all share purchase options and restricted share units (“RSUs”) awarded to employees, officers and directors based on the fair values of the share purchase options and RSUs at the date of grant. The fair values of share purchase options and RSUs at the date of grant are expensed over the vesting periods of the share purchase options and RSUs, respectively, with a corresponding increase to equity. The fair value of share purchase options is determined using the Black-Scholes option pricing model with market related inputs as of the date of grant. Share purchase options with graded vesting schedules are accounted for as separate grants with different vesting periods and fair values. The fair value of RSUs is the market value of the underlying shares at the date of grant. At the end of each reporting period, the Company re-assesses The Company recognizes a stock based compensation expense for performance share units (“PSUs”) which are awarded to eligible employees and are settled in cash. Compensation expense for the PSUs is recorded on a straight-line basis over the three year vesting period. This estimated expense is reflected as a component of net earnings over the vesting period of the PSUs with the related obligation recorded as a liability on the balance sheet. The amount of compensation expense is adjusted at the end of each reporting period to reflect (i) the fair market value of common shares; (ii) the number of PSUs anticipated to vest; and (iii) the anticipated performance factor. 3.12. Income Taxes Income tax expense comprises current and deferred income tax. Current and deferred income taxes are recognized as a component of net earnings except to the extent that it relates to items recognized directly in equity or as a component of OCI. Current income tax is the expected tax payable on the taxable income for the year, using tax rates enacted or substantively enacted at the end of the reporting period, and any adjustment to tax payable in respect of previous years. Deferred income tax is recognized using the liability method on temporary differences arising between the tax bases of assets and liabilities and their carrying amounts in the consolidated financial statements. Deferred income tax assets and liabilities are measured using tax rates and laws that have been enacted or substantively enacted at the end of the reporting period and which are expected to apply when the related deferred income tax assets are realized or the deferred income tax liabilities are settled. Deferred income tax liabilities are generally recognized for all taxable temporary differences. Deferred income tax assets are generally recognized for all deductible temporary differences and the carry forward of unused tax losses and tax credits to the extent that it is probable that sufficient future taxable income, including income arising from reversing taxable temporary differences and tax planning opportunities, will be available against which those deductible temporary differences and the carry forward of unused tax losses and tax credits can be utilized. Deferred income tax liabilities are recognized for taxable temporary differences arising on investments in subsidiaries except where the reversal of the temporary difference can be controlled and it is probable that the difference will not reverse in the foreseeable future. Deferred income tax assets arising from deductible temporary differences associated with such investments are only recognized to the extent that it is probable that there will be sufficient taxable income against which to utilize the benefits of the temporary differences and they are expected to reverse in the foreseeable future. The carrying amount of deferred income tax assets are reviewed at the end of each reporting period and reduced to the extent that it is no longer probable that sufficient taxable income, including income arising from reversing taxable temporary differences and tax planning opportunities, will be available to allow all or part of the deferred income tax assets to be recovered. Deferred income tax assets and liabilities are not recognized for temporary differences arising from the initial recognition (other than in a business combination) of assets and liabilities in a transaction which does not affect either the accounting income or the taxable income. In addition, deferred income tax liabilities are not recognized if the temporary difference arises from the initial recognition of goodwill. 3.13. Earnings Per Share Earnings per share calculations are based on the weighted average number of common shares and common share equivalents issued and outstanding during the year. Diluted earnings per share is calculated using the treasury method which requires the calculation of diluted earnings per share by assuming that outstanding share purchase options and warrants with an exercise price that exceeds the average market price of the common shares for the period are exercised, and the proceeds are used to repurchase shares of the Company at the average market price of the common shares for the period. 3.14. Foreign Currency Translation The functional currency is the currency of the primary economic environment in which an entity operates. The consolidated financial statements are presented in US dollars, which is the functional currency of the Company and its subsidiaries. Foreign currency monetary assets and liabilities are translated into US dollars at the exchange rates prevailing at the balance sheet date. Non-monetary 3.15. Leasing The Company as the Lessee At inception of a contract, the Company assesses whether the contract is, or contains, a lease. A contract is, or contains, a lease if the contract conveys the right to use an identified asset for a period of time in exchange for consideration. The Company recognizes a right-of-use The lease liability is initially measured at the present value of the lease payments that are not paid at the commencement date discounted by using the rate implicit in the lease. If this rate cannot be readily determined, the Company uses its incremental borrowing rate. The lease liability is subsequently measured by increasing the carrying amount to reflect interest on the lease liability (using the effective interest method) and by reducing the carrying amount to reflect the lease payments made. The Company re-measures right-of-use re-measured The right-of-use 3.16. Property, plant and equipment Property, plant and equipment are measured at cost less accumulated depreciation. The cost includes the original purchase price of the asset and the costs attributable to bringing the asset to its working condition for its intended use. Depreciation is based on cost and is calculated on a straight-line basis over the estimated economic life of the asset. The right of use asset discussed in Note 3.15 and the leasehold improvements are depreciated over the life of the lease term. Other assets, which include computer software, computer equipment, office furniture and office equipment, are depreciated over their estimated economic life, which ranges from 3 to 10 years. 3.17. Provisions Provisions are recognized when the Company has a present obligation (legal or constructive) as a result of a past event, it is probable that the Company will be required to settle the obligation, and a reliable estimate can be made of the amount required to settle the obligation. The amount recognized as a provision is the best estimate of the consideration required to settle the present obligation at the end of the reporting period, taking into account the risks and uncertainties surrounding the obligation. Where a provision is measured using the cash flows estimated to settle the present obligation, its carrying amount is the present value of those cash flows. When some or all of the economic benefits required to settle a provision are expected to be recovered from a third party, a receivable is recognized as an asset if it is virtually certain that reimbursement will be received and the amount of the receivable can be measured reliably. 3.18. Post-Employment Benefit Costs The Company provides a Supplemental Employee Retirement Plan (“SERP) to all qualified employees. The SERP is an unregistered and unfunded defined contribution plan under which the Company makes a fixed notional contribution to an account maintained by the Company. Any benefits under the SERP have a vesting period of five years from the first date of employment. The notional contributions are recognized as employee benefit expense in earnings in the periods during which services are rendered by employees. 3.19. Future Changes to Accounting Policies The IASB has issued the following new or amended standards: Standards required to be applied for periods beginning on or after January 1, 2020: ● Amendment to IFRS 3 - Business Combinations - The amendments to IFRS 3 clarify the definition of a business and includes an optional concentration test to determine whether an acquired set of activities and assets is a business. The amendments are effective for business combinations and asset acquisitions occurring on or after January 1, 2020. The Company will apply these amendments to future acquisition transactions

Key Sources of Estimation Uncer

Key Sources of Estimation Uncertainty and Critical Accounting Judgments	12 Months Ended
	Dec. 31, 2019
Text block [abstract]
Key Sources of Estimation Uncertainty and Critical Accounting Judgments	4. Key Sources of Estimation Uncertainty and Critical Accounting Judgments The preparation of the Company’s consolidated financial statements in conformity with IFRS requires management to make judgments, estimates and assumptions that affect the reported amounts of assets, liabilities and contingent liabilities at the date of the consolidated financial statements and reported amounts of revenues and expenses during the reporting period. Estimates and assumptions are continuously evaluated and are based on management’s experience and other factors, including expectations of future events that are believed to be reasonable under the circumstances. However, actual outcomes can differ from these estimates. Information about significant areas of estimation uncertainty and judgments made by management in preparing the consolidated financial statements are described below. Key Sources of Estimation Uncertainty 4.1. Attributable Reserve, Resource and Exploration Potential Estimates Mineral stream interests are significant assets of the Company, with a carrying value of $5.8 billion at December 31, 2019. This amount represents the capitalized expenditures related to the acquisition of the mineral stream interests, net of accumulated depletion and accumulated impairment charges, if any. The Company estimates the reserves, resources and exploration potential relating to each agreement. Reserves are estimates of the amount of metals contained in ore that can be economically and legally extracted from the mining properties in respect of which the Company has PMPAs. Resources are estimates of the amount of metals contained in mineralized material for which there is a reasonable prospect for economic extraction from the mining properties in respect of which the Company has PMPAs. Exploration potential represents an estimate of additional reserves and resources which may be discovered through the mine operator’s exploration program. The Company adjusts its estimates of reserves, resources (where applicable) and exploration potential (where applicable) to reflect the Company’s percentage entitlement to metals produced from such mines. The Company compiles its estimates of its reserves and resources based on information supplied by appropriately qualified persons relating to the geological data on the size, density and grade of the ore body, and require complex geological and geostatistical judgments to interpret the data. The estimation of recoverable reserves and resources is based upon factors such as estimates of foreign exchange rates, commodity prices, future capital requirements, and production costs along with geological assumptions and judgments made in estimating the size and grade of the ore body. The Company estimates exploration potential based on assumptions surrounding the ore body continuity which requires judgment as to future success of any exploration programs undertaken by the mine operator. Changes in the reserve estimates, resource estimates or exploration potential estimates may impact upon the carrying value of the Company’s mineral stream interests and depletion charges. 4.2. Depletion As described in Note 3.8, the Company’s mineral stream interests are separately allocated to reserves, resources and exploration potential. The value allocated to reserves is classified as depletable and is depleted on a unit-of-production non-depletable 4.3. Impairment of Assets As more fully described in Note 3.8, the Company assesses each PMPA at the end of every reporting period to determine whether any indication of impairment or impairment reversal exists. If such an indication exists, the recoverable amount of the PMPA is estimated in order to determine the extent of the impairment or impairment reversal (if any). The calculation of the recoverable amount requires the use of estimates and assumptions such as long-term commodity prices, discount rates, recoverable ounces of attributable metals, and operating performance. The price of precious metals and cobalt has been extremely volatile over the past several years. The Company monitors spot and forward metal prices and if necessary re-evaluates re-evaluate 4.4. Valuation of Stock Based Compensation As more fully described in Note 3.11, the Company has various forms of stock based compensation, including share purchase options, restricted share units (“RSUs”) and performance share units (“PSUs”). The calculation of the fair value of share purchase options, RSUs and PSUs issued requires the use of estimates as more fully described in Notes 20.2, 20.3, and 21.1, respectively. 4.5. Valuation of Convertible Notes Receivable As more fully described in Notes 3.6 and 5.8.3, the Company measures its convertible notes receivable at fair value for financial reporting purposes. This calculation requires the use of estimates and assumptions such as rate of interest prevailing at the balance sheet date for instruments of similar term and risk, expected dividend yield, expected volatility and expected remaining life of the convertible notes receivable. 4.6. Valuation of Minto Derivative Liability As more fully described in Note 5.8.3, the Company’s Minto PMPA has a pricing mechanism whereby there is an increase to the production payment per ounce of gold delivered to Wheaton over the current fixed price in periods where the market price of copper is lower than $2.50 per pound. As this pricing mechanism meets the definition of a derivative, it is reflected at fair value for financial reporting purposes. This calculation requires the use of estimates and assumptions such as long-term price of copper, recoverable ounces of gold and operating performance. 4.7. Contingencies Due to the size, complexity and nature of the Company’s operations, various legal and tax matters are outstanding from time to time, including those matters described in Note 29. By their nature, contingencies will only be resolved when one or more future events occur or fail to occur. The assessment of contingencies inherently involves the exercise of significant judgment and estimates of the outcome of future events. If the Company is unable to resolve any of these matters favorably, there may be a material adverse impact on the Company’s financial performance, cash flows or results of operations. In the event that management’s estimate of the future resolution of these matters changes, the Company will recognize the effects of the changes in its consolidated financial statements in the appropriate period relative to when such changes occur. Critical Accounting Judgments 4.8. Functional Currency The functional currency for the Company and each of its subsidiaries is the currency of the primary economic environment in which the entity operates. As a result of the following factors, the Company has determined that the functional currency of each entity is the US dollar: ● The entities’ revenues are denominated in US dollars; ● The entities’ cash cost of sales are denominated in US dollars; ● The majority of the entities’ cash is held in US dollars; and ● The Company generally seeks to raise capital in US dollars. Determination of the functional currency may involve certain judgments to determine the primary economic environment and the Company reconsiders the functional currency of its entities if there is a change in events and conditions which determined the primary economic environment. 4.9. Significant Influence over Kutcho Note 14 describes Kutcho as an associate though the Company only owns a 10% ownership interest in Kutcho. The Company has determined it has significant influence over Kutcho by virtue of the convertible instruments of Kutcho that the Company owns. 4.10. Income Taxes The interpretation and application of existing tax laws, regulations or rules in Canada, the Cayman Islands, Barbados, Luxembourg, the Netherlands or any of the countries in which the Company’s subsidiaries or the mining operations are located or to which deliveries of precious metals, precious metal credits or cobalt are made requires the use of judgment. The likelihood that tax positions taken will be sustained is assessed based on facts and circumstances of the relevant tax position considering all available evidence. Differing interpretation of these laws, regulations or rules could result in an increase in the Company’s taxes, or other governmental charges, duties or impositions. Refer to Note 29 for more information. In assessing the probability of realizing deferred income tax assets, the Company makes estimates related to expectations of future taxable income, including the expected timing of reversals of existing temporary differences. Such estimates are based on forecasted cash flows from operations which require the use of estimates and assumptions such as long-term commodity prices and recoverable metal ounces. The amount of deferred income tax assets recognized on the balance sheet could be reduced if the actual taxable income differs significantly from expected taxable income. The Company reassesses its deferred income tax assets at the end of each reporting period. 4.11. Leases As more fully described in Note 3.1, on January 1, 2019, the Company adopted IFRS 16 – Leases. Under IFRS 16, the Company assesses whether a contract contains a lease and, if so, recognizes a lease liability by discounting the future lease payments by using the Company’s estimated incremental borrowing rate. If the lease agreement contains an option to extend the lease, the Company must assess the likelihood of whether that option will be exercised. The determination of whether an option to extend a lease will be exercised requires significant management judgment, and providing the Company concludes that it is reasonably certain that the option to extend will be exercised, the lease payments during the extension period will comprise part of the right-of-use

Financial Instruments

Financial Instruments	12 Months Ended
	Dec. 31, 2019
Text block [abstract]
Financial Instruments	5. Financial Instruments 5.1. Capital Risk Management The Company manages its capital to ensure that it will be able to continue as a going concern while maximizing the return to stakeholders through the optimization of the debt and equity balance. The capital structure of the Company consists of debt (Note 18) and equity attributable to common shareholders, comprising of issued capital (Note 19), accumulated reserves (Note 20) and retained earnings. The Company is not subject to any externally imposed capital requirements with the exception of complying with the minimum tangible net worth covenant under the credit agreement governing bank debt (Note 18). The Company is in compliance with the debt covenants at December 31, 2019, as described in Note 18.1. 5.2. Categories of Financial Assets and Liabilities The non-revolving non-interest non-revolving Note December 31 December 31 (in thousands) 2019 2018 Financial assets Financial assets mandatorily measured at FVTNE Cash and cash equivalents $ 103,986 $ 75,767 Trade receivables from provisional concentrate sales, net of fair value adjustment 6, 9 4,350 1,332 Convertible notes receivable 15 21,856 12,899 Investments in equity instruments designated as at FVTOCI Long-term investments - common shares held 16 309,757 164,753 Financial assets measured at amortized cost Non-revolving 25 431 - Other accounts receivable 9 2,788 854 Class action settlement recoverable 25, 29 41,500 - Total financial assets $ 484,668 $ 255,605 Financial liabilities Financial liabilities at amortized cost Accounts payable and accrued liabilities 11,794 19,883 Bank debt 18 874,500 1,264,000 Pension liability 28 810 - Class action settlement 29 41,500 - Total financial liabilities $ 928,604 $ 1,283,883 5.3. Credit Risk Credit risk is the risk that the counterparty to a financial instrument will cause a financial loss for the Company by failing to discharge its obligations. To mitigate exposure to credit risk on financial assets, the Company has established policies to limit the concentration of credit risk, to ensure counterparties demonstrate minimum acceptable credit worthiness and to ensure liquidity of available funds. The Company closely monitors its financial assets and does not have any significant concentration of credit risk. The Company invests surplus cash in short-term, high credit quality, money market instruments. In addition, counterparties used to sell precious metals are all large, international organizations with strong credit ratings and the balance of trade receivables owed to the Company in the ordinary course of business is not significant. Therefore, credit risk associated with trade receivables at December 31, 2019 is considered to be negligible. The Company’s maximum exposure to credit risk related to its financial assets is as follows: December 31 December 31 (in thousands) Note 2019 2018 Cash and cash equivalents $ 103,986 $ 75,767 Trade receivables from provisional concentrate sales, net of fair value adjustment 9 4,350 1,332 Other accounts receivables 9 2,788 854 Non-revolving 25 431 - Convertible notes receivable 15 21,856 12,899 Class action settlement recoverable 25, 29 41,500 - Maximum exposure to credit risk related to financial assets $ 174,911 $ 90,852 As it relates to the non-revolving 5.4. Liquidity Risk The Company has in place a rigorous planning and budgeting process to help determine the funds required to support the Company’s normal operating requirements on an ongoing basis and its expansionary plans. The Company ensures that there are sufficient committed loan facilities to meet its short-term business requirements, taking into account its anticipated cash flows from operations and its holdings of cash and cash equivalents. As at December 31, 2019, the Company had cash and cash equivalents of $104 million (December 31, 2018 - $76 million) and working capital of $90 million (December 31, 2018 - $51 million). The Company holds equity investments of several companies (Note 16) with a combined market value at December 31, 2019 of $310 million (December 31, 2018 - $165 million). The daily exchange traded volume of these shares, including the shares underlying the warrants, is not sufficient for the Company to liquidate its position in a short period of time without potentially affecting the market value of the shares. These shares and warrants are held for strategic purposes and are considered long-term investments and therefore, as part of the Company’s planning, budgeting and liquidity analysis process, these investments are not relied upon to provide operational liquidity. The following table summarizes the timing associated with the Company’s remaining contractual payments relating to its financial liabilities. The table reflects the undiscounted cash flows of financial liabilities based on the earliest date on which the Company can be required to pay (assuming that the Company is in compliance with all of its obligations). The table includes both interest and principal cash flows. To the extent that applicable interest rates are floating in nature, the interest charges are estimated based on market-based forward interest rate curves at the end of the reporting period. As at December 31, 2019 (in thousands) 2020 2021 - 2023 2024 - 2025 After 2025 Total Non-derivative Bank debt ¹ $ - $ - $ 874,500 $ - $ 874,500 Interest on bank debt ² 25,363 68,061 5,877 - 99,301 Accounts payable and accrued liabilities 11,794 - - - 11,794 Performance share units 3 10,668 6,895 1,506 - 19,069 Pension liability 4 810 - - - 810 Lease liability 724 2,413 1,115 - 4,252 Class action settlement 5 41,500 - - - 41,500 Total $ 90,859 $ 77,369 $ 882,998 $ - $ 1,051,226 1) Assumes the principal balance outstanding at December 31, 2019 does not change until the debt maturity date. On February 27, 2020, the term of the revolving credit facility was extended by an additional year, with the facility now maturing on February 27, 2025. 2) As the applicable interest rates are floating in nature, the interest charges are estimated based on market-based forward interest rate curves at the end of the reporting period combined with the assumption that the principal balance outstanding at December 31, 2019 does not change until the debt maturity date. 3) Assumes a weighted average performance factor of 186% (see Note 20.1). 4) As described in Note 28, any benefits under the SERP will be paid out to the employee over a 10-year period, or at the employee’s election, a shorter period upon the employee’s retirement from the Company. 5) As more fully described in Note 29, the class action settlement will be fully funded by the Company’s insurance carriers and the other Defendants. The Company will not be required to pay any portion of the settlement. The recoverable amount has been reflected as a component of Other current assets (Note 25). 5.5. Currency Risk The Company undertakes certain transactions denominated in Canadian dollars, including certain operating expenses and the acquisition of strategic long-term investments. As a result, the Company is exposed to fluctuations in the value of the Canadian dollar relative to the United States dollar. The carrying amounts of the Company’s Canadian dollar denominated monetary assets and monetary liabilities at the end of the reporting period are as follows: December 31 December 31 (in thousands) 2019 2018 Monetary assets Cash and cash equivalents $ 4,148 $ 731 Accounts receivable 2,519 637 Long-term investments - common shares held 309,757 161,421 Convertible note receivable 11,837 12,899 Non-revolving 431 - Other long-term assets 3,450 1,105 Total Canadian dollar denominated monetary assets $ 332,142 $ 176,793 Monetary liabilities Accounts payable and accrued liabilities $ 6,059 $ 16,128 Current taxes payable - 3,361 Performance share units 15,423 8,808 Lease liability 2,748 - Pension liability 810 - Total Canadian dollar denominated monetary liabilities $ 25,040 $ 28,297 The following tables detail the Company’s sensitivity to a 10% increase or decrease in the Canadian dollar relative to the United States dollar, representing the sensitivity used when reporting foreign currency risk internally to key management personnel and represents management’s assessment of the reasonably possible change in exchange rates. As at December 31, 2019 Change in Canadian Dollar (in thousands) 10% Increase 10% Decrease Increase (decrease) in net earnings $ (265 ) $ 265 Increase (decrease) in other comprehensive income 30,976 (30,976 ) Increase (decrease) in total comprehensive income $ 30,711 $ (30,711 ) As at December 31, 2018 Change in Canadian Dollar (in thousands) 10% Increase 10% Decrease Increase (decrease) in net earnings $ (1,292 ) $ 1,292 Increase (decrease) in other comprehensive income 16,142 (16,142) Increase (decrease) in total comprehensive income $ 14,850 $ (14,850) 5.6. Interest Rate Risk The Company is exposed to interest rate risk on its outstanding borrowings and short-term investments. Presently, all of the Company’s outstanding borrowings are at floating interest rates. The Company monitors its exposure to interest rates and has not entered into any derivative contracts to manage this risk. During the year ended December 31, 2019, the weighted average effective interest rate paid by the Company on its outstanding borrowings was 4.07% (2018 – 3.57%). During the years ended December 31, 2019 and December 31, 2018, a fluctuation in interest rates of 100 basis points (1 percent) would have impacted the amount of interest expensed by approximately $11 million and $10 million, respectively. 5.7. Other Price Risk The Company is exposed to equity price risk as a result of holding long-term investments in common shares of various companies. The Company does not actively trade these investments. If equity prices had been 10% higher or lower at the respective balance sheet date, other comprehensive income for the years ended December 31, 2019 and December 31, 2018 would have increased/decreased by approximately $31 million and $16 million, respectively, as a result of changes in the fair value of common shares held. 5.8. Fair Value Estimation The Company classifies its fair value measurements within a fair value hierarchy, which reflects the significance of the inputs used in making the measurements as defined in IFRS 13 – Fair Value Measurements (“IFRS 13”). Level 1 - Unadjusted quoted prices at the measurement date for identical assets or liabilities in active markets. Level 2 - Observable inputs other than quoted prices included in Level 1, such as quoted prices for similar assets and liabilities in active markets; quoted prices for identical or similar assets and liabilities in markets that are not active; or other inputs that are observable or can be corroborated by observable market data. Level 3 - Unobservable inputs which are supported by little or no market activity. The following table sets forth the Company’s financial assets and liabilities measured at fair value by level within the fair value hierarchy. As required by IFRS 13, assets and liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement. December 31, 2019 (in thousands) Note Total Level 1 Level 2 Level 3 Cash and cash equivalents $ 103,986 $ 103,986 $ - $ - Trade receivables from provisional concentrate sales, net of fair value adjustment 9 4,350 - 4,350 - Long-term investments - common shares held 16 309,757 309,757 - - Convertible notes receivable 15 21,856 - - 21,856 $ 439,949 $ 413,743 $ 4,350 $ 21,856 December 31, 2018 (in thousands) Total Level 1 Level 2 Level 3 Cash and cash equivalents $ 75,767 $ 75,767 $ - $ - Trade receivables from provisional concentrate sales, net of fair value adjustment 9 1,332 - 1,332 - Long-term investments - common shares held 16 164,753 164,753 - - Convertible note receivable 15 12,899 - - 12,899 $ 254,751 $ 240,520 $ 1,332 $ 12,899 The non-revolving non-interest non-revolving The Company’s bank debt (Note 18.1) is reported at amortized cost using the effective interest method. The carrying value of the bank debt approximates its fair value. 5.8.1. Valuation Techniques for Level 1 Assets Cash and Cash Equivalents The Company’s cash and cash equivalents are valued using quoted market prices in active markets and, as such, are classified within Level 1 of the fair value hierarchy. Long-Term Investments in Common Shares Held The Company’s long-term investments in common shares held are valued using quoted market prices in active markets and, as such, are classified within Level 1 of the fair value hierarchy. The fair value of the long-term investments in common shares held is calculated as the quoted market price of the common share multiplied by the quantity of shares held by the Company. 5.8.2. Valuation Techniques for Level 2 Assets Accounts Receivable Arising from Sales of Metal Concentrates The Company’s trade receivables and accrued liabilities from provisional concentrate sales are valued based on forward prices of gold and silver to the expected date of final settlement (Note 6). As such, these receivables and/or liabilities are classified within Level 2 of the fair value hierarchy. 5.8.3. Valuation Techniques for Level 3 Assets Convertible Notes Receivable The fair value of the convertible notes receivable (Note 15), which are not traded in an active market, is determined by discounting the stream of future interest and principal payments at the rate of interest prevailing at the balance sheet date for instruments of similar term and risk (the market interest rate), and adding this value to the value of the convertibility feature which is estimated using a Black-Scholes model based on assumptions including risk free interest rate, expected dividend yield, expected volatility and expected remaining life of the respective convertible notes receivable. As the expected volatility and market interest rate are not observable inputs, the convertible notes receivable are classified within Level 3 of the fair value hierarchy and any changes in fair value are reflected on the Consolidated Statement of Earnings under the classification Other (Income) Expense (Note 8). Relative to the Kutcho Convertible Note, management estimates that the market interest rate on similar borrowings without the conversion feature was approximately 21% and has used an implied volatility of 30% in valuing the convertibility feature. Relative to the Gold X Convertible Note, management estimates that the market interest rate on similar borrowings without the conversion feature was approximately 12% and has used an implied volatility of 30% in valuing the convertibility feature. Holding all other variables constant, a fluctuation in interest rates of 1% and a fluctuation in the implied volatility used of 5% would have impacted the valuation as below: As at December 31, 2019 Change in interest rate Change in volatility (in thousands) Increase Decrease Increase Decrease Kutcho Convertible Note $ (515 ) $ 542 $ 72 $ (41 ) Gold X Convertible Note (262 ) 270 191 (172 ) Minto Derivative Liability The production payment per ounce of gold delivered to Wheaton under the Minto PMPA is to be increased over the fixed price in periods where the market price of copper is lower than $2.50 per pound. As this pricing mechanism meets the definition of a derivative, it is reflected at fair value for financial reporting purposes. At December 31, 2019 and December 31, 2018, the Company estimated the fair value of this derivative liability to be $NIL.

Revenue

Revenue	12 Months Ended
	Dec. 31, 2019
Text block [abstract]
Revenue	6. Revenue Years Ended December 31 (in thousands) 2019 2018 Sales Gold Gold credit sales $ 535,766 62 % $ 431,618 54% Concentrate sales 5,279 1 % 9,575 1% $ 541,045 63 % $ 441,193 55% Silver Silver credit sales $ 225,316 26 % $ 290,152 37% Concentrate sales 63,085 7 % 53,427 7% $ 288,401 33 % $ 343,579 44% Palladium Palladium credit sales $ 31,886 4 % $ 9,240 1% Total sales revenue $ 861,332 100 % $ 794,012 100% Gold, Silver and Palladium Credit Sales Under certain PMPAs, precious metal is acquired from the mine operator in the form of precious metal credits, which is then sold through a network of third party brokers or dealers. Revenue from precious metal credit sales is recognized at the time of the sale of such credits, which is also the date that control of the precious metal is transferred to the customer. During the year ended December 31, 2019, sales to two financial institutions accounted for 33% and 25% of the Company’s revenue as compared to sales to three financial institutions that accounted for 29%, 22% and 13% of the Company’s revenue during the comparable period of the previous year. The Company would not be materially affected should any of these financial institutions cease to buy precious metal credits from the Company as these sales would be redirected to alternate financial institutions. The Company will occasionally enter into forward contracts in relation to precious metal deliveries that it is highly confident will occur within a given quarter. No forward contracts were outstanding at December 31, 2019 or December 31, 2018. The sales price is fixed at the delivery date based on either the terms of these short-term forward sales contracts or the spot price of precious metal. Concentrate Sales Under certain PMPAs, gold and/or silver is acquired from the mine operator in concentrate form, which is then sold under the terms of the concentrate sales contracts to third-party smelters or traders. Where the Company acquires precious metal in concentrate form, final precious metal prices are set on a specified future quotational period (the “Quotational Period”) pursuant to the concentrate sales contracts with third-party smelters, typically one to three months after the shipment date, based on market prices for precious metal. The contracts, in general, provide for a provisional payment based upon provisional assays and quoted gold and silver prices. Final settlement is based upon the average applicable price for the Quotational Period applied to the actual number of precious metal ounces recovered calculated using confirmed smelter weights and settlement assays. Revenues and the associated cost of sales are recorded on a gross basis under these contracts at the time title passes to the buyer, which is also the date that control of the precious metal is transferred to the customer. The Company has concluded that the adjustments relating to the final assay results for the quantity of concentrate sold and the retroactive pricing adjustment for the Quotational Period are not significant and do not constrain the recognition of revenue. At December 31, 2019, the Company had outstanding provisionally priced sales of $8 million (December 31, 2018 - $7 million) where the quotational period pricing was estimated based on the forward price for silver (December 31, 2018 - gold and silver). These sales consisted of 0.5 million ounces of silver (December 31, 2018 - 500 ounces of gold and 0.4 million ounces of silver) which had a fair value gain adjustment of approximately $0.5 million (December 31, 2018 - $0.5 million) associated with the embedded derivative. For each one cent per ounce increase or decrease in the realized silver price, revenue would increase or decrease by approximately $4,600 (December 31, 2018 - for each one dollar per ounce increase or decrease in the realized gold price, revenue would increase or decrease by approximately $500 and for each one cent per ounce increase or decrease in the realized silver price, revenue would increase or decrease by approximately $4,500).

General and Administrative

General and Administrative	12 Months Ended
	Dec. 31, 2019
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General and Administrative	7. General and Administrative Years Ended December 31 (in thousands) Note 2019 2018 Salaries and benefits Salaries and benefits, excluding PSUs $ 13,840 $ 14,397 PSUs 1 21.1 17,174 9,517 Total salaries and benefits $ 31,014 $ 23,914 Depreciation 1,903 1,057 Donations 2,946 2,610 Professional fees 2,496 8,559 Other 10,457 10,078 General and administrative before equity settled stock based compensation $ 48,816 $ 46,218 Equity settled stock based compensation 2 Stock options 20.2 $ 2,474 $ 2,401 RSUs 20.3 3,217 3,031 Total equity settled stock based compensation $ 5,691 $ 5,432 Total general and administrative $ 54,507 $ 51,650 1) The PSU accrual related to the anticipated fair value of the PSUs issued uses a weighted average performance factor of 186% during the year ended December 31, 2019 as compared to 141% during the comparable period of 2018. 2) Equity settled stock based compensation is a non-cash

Other (Income) Expense

Other (Income) Expense	12 Months Ended
	Dec. 31, 2019
Text block [abstract]
Other (Income) Expense	8. Other (Income) Expense Years Ended December 31 (in thousands) Note 2019 2018 Interest income $ (816 ) $ (750 ) Dividends received from equity investments designated as FVTOCI ¹ relating to investments held at the end of the reporting period 16 - (78 ) Dividends received from equity investments designated as FVTOCI ¹ relating to investments disposed of during the period 16 (59 ) - Guarantee fees - Primero Revolving Credit Facility - (858 ) Fees for contract amendments and reconciliations - (248 ) Share of losses of associate 14 164 432 Impairment loss - investment in associate 14 1,649 - Foreign exchange loss (gain) 1,028 (144 ) Gain on disposal of mineral royalty interest 13 (2,929 ) - Interest and penalties related to CRA Settlement 2 24 (225 ) 4,317 Net (gain) loss arising on financial assets mandatorily measured at FVTPL ³ (Gain) loss on fair value adjustment of share purchase warrants held 16 16 124 (Gain) loss on fair value adjustment of convertible notes receivable 15 1,043 2,878 Other (145 ) 153 Total other (income) expense $ (274 ) $ 5,826 1) FVTOCI refers to Fair Value Through Other Comprehensive Income. 2) Please see Note 24 for more information. 3) FVTPL refers to Fair Value Through Profit or Loss.

Accounts Receivable

Accounts Receivable	12 Months Ended
	Dec. 31, 2019
Text block [abstract]
Accounts Receivable	9. Accounts Receivable December 31 December 31 (in thousands) Note 2019 2018 Trade receivables from provisional concentrate sales, net of fair value adjustment 6 $ 4,350 $ 1,332 Other accounts receivable 2,788 854 Total accounts receivable $ 7,138 $ 2,186

Mineral Stream Interests

Mineral Stream Interests	12 Months Ended
	Dec. 31, 2019
Text block [abstract]
Mineral Stream Interests	10. Mineral Stream Interests Year Ended December 31, 2019 Cost Accumulated Depletion & Impairment 1 Carrying Amount Dec 31, 2019 (in thousands) Balance Jan 1, 2019 Additions (Reductions) Balance Dec 31, 2019 Balance Jan 1, 2019 Depletion Impairment Balance Dec 31, 2019 Gold interests Salobo $ 3,059,876 $ - $ 3,059,876 $ (353,816 ) $ (100,803 ) $ - $ (454,619 ) $ 2,605,257 Sudbury 2 623,864 - 623,864 (257,401 ) (22,420 ) - (279,821 ) 344,043 Constancia 136,058 - 136,058 (18,511 ) (7,141 ) - (25,652 ) 110,406 San Dimas 220,429 - 220,429 (12,234 ) (13,828 ) - (26,062 ) 194,367 Stillwater 3 239,357 (5 ) 239,352 (2,925 ) (6,433 ) - (9,358 ) 229,994 Other 4 402,232 - 402,232 (380,873 ) (8,191 ) - (389,064 ) 13,168 $ 4,681,816 $ (5 ) $ 4,681,811 $ (1,025,760 ) $ (158,816 ) $ - $ (1,184,576 ) $ 3,497,235 Silver interests Peñasquito $ 524,626 - 524,626 $ (135,904 ) $ (14,020 ) $ - $ (149,924 ) $ 374,702 Antamina 900,343 - 900,343 (190,266 ) (41,267 ) - (231,533 ) 668,810 Constancia 302,948 - 302,948 (56,717 ) (18,044 ) - (74,761 ) 228,187 Other 5 1,283,039 15 1,283,054 (780,401 ) (14,960 ) - (795,361 ) 487,693 $ 3,010,956 $ 15 $ 3,010,971 $ (1,163,288 ) $ (88,291 ) $ - $ (1,251,579 ) $ 1,759,392 Palladium interests Stillwater 3 $ 263,726 $ (5 ) $ 263,721 $ (4,033 ) $ (9,719 ) $ - $ (13,752 ) $ 249,969 Cobalt interests Voisey’s Bay $ 393,422 $ - $ 393,422 $ - $ - $ (165,912 ) $ (165,912 ) $ 227,510 $ 8,349,920 $ 5 $ 8,349,925 $ (2,193,081 ) $ (256,826 ) $ (165,912 ) $ (2,615,819 ) $ 5,734,106 1) Includes cumulative impairment charges to December 31, 2019 as follows: Keno Hill silver interest - $11 million; Pascua-Lama silver interest - $338 million; 777 silver interest - $64 million; 777 gold interest - $151 million; Sudbury gold interest - $120 million; and Voisey’s Bay cobalt interest - $166 million. 2) Comprised of the Coleman, Copper Cliff, Garson, Stobie, Creighton, Totten and Victor gold interests. 3) Comprised of the Stillwater and East Boulder gold and palladium interests. 4) Comprised of the Minto, Rosemont and 777 gold interests. 5) Comprised of the Los Filos, Zinkgruvan, Yauliyacu, Stratoni, Keno Hill, Neves-Corvo, Minto, Aljustrel, Loma de La Plata, Pascua-Lama, Rosemont and 777 silver interests. Year Ended December 31, 2018 Cost Accumulated Depletion & Impairment 1 Carrying Amount Dec 31, 2018 (in thousands) Balance Jan 1, 2018 Additions Disposal Balance Dec 31, 2018 Balance Jan 1, 2018 Depletion Disposal Balance Dec 31, 2018 Gold interests Salobo $ 3,059,876 $ - $ - $ 3,059,876 $ (251,144 ) $ (102,672 ) $ - $ (353,816 ) $ 2,706,060 Sudbury 2 623,864 - - 623,864 (243,876 ) (13,525 ) - (257,401 ) 366,463 Constancia 136,058 - - 136,058 (14,007 ) (4,504 ) - (18,511 ) 117,547 San Dimas - 220,429 - 220,429 - (12,234 ) - (12,234 ) 208,195 Stillwater 3 - 239,357 - 239,357 - (2,925 ) - (2,925 ) 236,432 Other 4 402,232 - - 402,232 (370,414 ) (10,459 ) - (380,873 ) 21,359 $ 4,222,030 $ 459,786 $ - $ 4,681,816 $ (879,441 ) $ (146,319 ) $ - $ (1,025,760 ) $ 3,656,056 Silver interests San Dimas $ 190,331 $ - $ (190,331 ) $ - $ (55,469 ) $ (3,575 ) $ 59,044 $ - $ - Peñasquito 524,626 - - 524,626 (121,376 ) (14,528 ) - (135,904 ) 388,722 Antamina 900,343 - - 900,343 (142,705 ) (47,561 ) - (190,266 ) 710,077 Constancia 302,948 - - 302,948 (41,145 ) (15,572 ) - (56,717 ) 246,231 Other 5 1,282,837 202 - 1,283,039 (759,702 ) (20,699 ) - (780,401 ) 502,638 $ 3,201,085 $ 202 $ (190,331 ) $ 3,010,956 $ (1,120,397 ) $ (101,935 ) $ 59,044 $ (1,163,288 ) $ 1,847,668 Palladium interests Stillwater 3 $ - $ 263,726 - $ 263,726 $ - $ (4,033 ) - $ (4,033 ) $ 259,693 Cobalt interests Voisey’s Bay $ - $ 393,422 - $ 393,422 $ - $ - - $ - $ 393,422 $ 7,423,115 $ 1,117,136 $ (190,331 ) $ 8,349,920 $ (1,999,838 ) $ (252,287 ) $ 59,044 $ (2,193,081 ) $ 6,156,839 1) Includes cumulative impairment charges to December 31, 2018 as follows: Keno Hill silver interest - $11 million; Pascua-Lama silver interest - $338 million; 777 silver interest - $64 million; 777 gold interest - $151 million; and Sudbury gold interest - $120 million. 2) Comprised of the Coleman, Copper Cliff, Garson, Stobie, Creighton, Totten and Victor gold interests. 3) Comprised of the Stillwater and East Boulder gold and palladium interests. 4) Comprised of the Minto, Rosemont and 777 gold interests. 5) Comprised of the currently owned Los Filos, Zinkgruvan, Yauliyacu, Stratoni, Keno Hill, Neves-Corvo, Minto, Aljustrel, Loma de La Plata, Pascua-Lama, Rosemont and 777 silver interests in addition to the Lagunas Norte, Pierina and Veladero silver interests, all of which expired on March 31, 2018. The value allocated to reserves is classified as depletable upon a mining operation achieving first production and is depleted on a unit-of-production non-depletable December 31, 2019 December 31, 2018 (in thousands) Depletable Non- Depletable Total Depletable Non- Depletable Total Gold interests Salobo $ 2,078,666 $ 526,591 $ 2,605,257 $ 2,171,292 $ 534,768 $ 2,706,060 Sudbury 1 290,841 53,202 344,043 308,041 58,422 366,463 Constancia 101,263 9,143 110,406 108,403 9,144 117,547 San Dimas 87,593 106,774 194,367 101,421 106,774 208,195 Stillwater 2 203,163 26,831 229,994 209,569 26,863 236,432 Other 3 13,168 - 13,168 21,359 - 21,359 $ 2,774,694 $ 722,541 $ 3,497,235 $ 2,920,085 $ 735,971 $ 3,656,056 Silver interests Peñasquito $ 287,493 $ 87,209 $ 374,702 $ 284,194 $ 104,528 $ 388,722 Antamina 322,148 346,662 668,810 353,679 356,398 710,077 Constancia 212,173 16,014 228,187 230,983 15,248 246,231 Other 4 83,687 404,006 487,693 87,386 415,252 502,638 $ 905,501 $ 853,891 $ 1,759,392 $ 956,242 $ 891,426 $ 1,847,668 Palladium interests Stillwater 3 $ 238,485 $ 11,484 $ 249,969 $ 248,299 $ 11,394 $ 259,693 Cobalt interests Voisey’s Bay $ - $ 227,510 $ 227,510 $ - $ 393,422 $ 393,422 $ 3,918,680 $ 1,815,426 $ 5,734,106 $ 4,124,626 $ 2,032,213 $ 6,156,839 1) Comprised of the Coleman, Copper Cliff, Garson, Stobie, Creighton, Totten and Victor gold interests. 2) Comprised of the Stillwater and East Boulder gold and palladium interests. 3) Comprised of the Minto, Rosemont and 777 gold interests. 4) Comprised of the Los Filos, Zinkgruvan, Yauliyacu, Stratoni, Keno Hill, Neves-Corvo, Minto, Aljustrel, Loma de La Plata, Pascua-Lama, Rosemont and 777 silver interests. Termination of the San Dimas Silver Interest and Acquisition of the San Dimas Gold Interest On May 10, 2018, First Majestic Silver Corp. (“First Majestic”) completed the acquisition of all the issued and outstanding common shares of Primero Mining Corp. (“Primero”) (the “Acquisition”). The Company had a silver purchase agreement with Primero (the “San Dimas SPA”), under which the Company acquired 100% of the payable silver produced at San Dimas up to 6 million ounces annually, and 50% of any excess for the life of the mine. In connection with the Acquisition, on May 10, 2018, the Company terminated the San Dimas SPA and entered into a new precious metal purchase agreement with First Majestic relating to the San Dimas mine (the “San Dimas PMPA”). As consideration for terminating the San Dimas SPA, the Company received a cash payment of $220 million and 20,914,590 First Majestic common shares with a fair value of $151 million (the “First Majestic Shares” 1 1 The First Majestic Shares are subject to volume selling restrictions. (in thousands) Cash received $ 220,000 Fair value of First Majestic shares received 151,000 Fee from Goldcorp in exchange for release from the guarantee of deliveries relative to San Dimas 10,000 Total net proceeds from the disposal of the San Dimas SPA $ 381,000 Less: carrying value plus closing costs (135,285 ) Gain on disposal of the San Dimas SPA $ 245,715 Under the terms of the new San Dimas PMPA, for which the Company paid total upfront cash consideration of $220 million, the Company is entitled to an amount equal to 25% of the payable gold production plus an additional amount of gold equal to 25% of the payable silver production converted to gold at a fixed gold to silver exchange ratio of 70:1. 1 Acquisition of the Voisey’s Bay Cobalt Interest On June 11, 2018, the Company entered into an agreement (the “Voisey’s Bay PMPA”) to acquire from Vale S.A. (“Vale”) an amount of cobalt equal to 42.4% of the cobalt production from its Voisey’s Bay mine, located in Canada, until the delivery of 31 million pounds of cobalt and 21.2% of cobalt production thereafter for the life of mine for a total upfront cash payment of $390 million. In addition, Wheaton will make ongoing payments of 18% of the spot price of cobalt per pound of cobalt delivered under the agreement until the market value of cobalt delivered to Wheaton, net of the per pound cash payment, exceeds the initial upfront cash deposit, and 22% of the spot price of cobalt thereafter. Payable rates for cobalt in concentrate have generally been fixed at 93.3%. Deliveries under the contract are scheduled to begin effective January 1, 2021. Acquisition of the Stillwater Gold and Palladium Interest On July 16, 2018, the Company entered into an agreement with Sibanye Gold Limited (“Sibanye-Stillwater”) to acquire an amount of gold and palladium equal to a fixed percentage of production from the Stillwater and East Boulder mines located in Montana in the United States (collectively referred to as the “Stillwater” mines) for a total upfront cash payment of $500 million. The Company is entitled to the attributable gold and palladium production for which an offtaker payment is received after July 1, 2018 at a fixed payable rate of 99% for gold and 99.6% for palladium. Under the terms of the agreement, the Company has acquired an amount of gold equal to 100% of the gold production for the life of the mine and an amount of palladium equal to 4.5% of the palladium production until 375,000 ounces are delivered to the Company, 2.25% of Stillwater palladium production thereafter until 550,000 ounces are delivered and 1% of Stillwater palladium production thereafter for the life of mine. In addition to the initial upfront cash consideration, the Company will make ongoing payments of 18% of the spot price of gold and palladium for each ounce of gold and palladium delivered under the agreement until the market value of gold and palladium delivered to Wheaton, net of the per ounce cash payment, exceeds the initial upfront cash deposit, and 22% of the spot price thereafter 2 1 If the average gold to silver price ratio decreases to less than 50:1 or increases to more than 90:1 for a period of 6 months or more, then the “70” shall be revised to “50” or “90”, as the case may be, until such time as the average gold to silver price ratio is between 50:1 to 90:1 for a period of 6 months or more in which event the “70” shall be reinstated. 2 The production payment is subject to further downward adjustment based upon Sibanye-Stillwater’s leverage ratios.

Impairment of Mineral Stream In

Impairment of Mineral Stream Interests	12 Months Ended
	Dec. 31, 2019
Text block [abstract]
Impairment of Mineral Stream Interests	11. Impairment of Mineral Stream Interests As more fully described in Note 3.8, at every reporting period the Company assesses each PMPA to determine whether any indication of impairment or impairment reversal exists. Based on the Company’s analysis, the following PMPAs were determined to be impaired: Years Ended December 31 (in thousands) 2019 2018 Cobalt Interests Voisey’s Bay $ 165,912 $ - Total impairment charges $ 165,912 $ - Voisey’s Bay - Indicator of Impairment at June 30, 2019 As described in Note 10, on June 11, 2018, the Company entered into the Voisey’s Bay PMPA. Concurrently, Vale also entered into a streaming agreement with Cobalt 27 Capital Corp. (“Cobalt 27”) on the Voisey’s Bay mine with similar terms and conditions to the Voisey’s Bay PMPA. On June 18, 2019, Cobalt 27 announced that it had entered into an agreement with Pala Investments Limited (“Pala”) whereby Pala would acquire 100% of Cobalt 27’s issued and outstanding common shares. The estimated implied price paid by Pala for Cobalt 27’s streaming agreement on the Voisey’s Bay mine was significantly lower than the original upfront cash payment paid by Cobalt 27 to Vale at the time their agreement was entered into. The implied purchase price paid by Pala to acquire Cobalt 27’s Voisey’s Bay stream was determined to be an indicator of impairment relative to the Company’s Voisey’s Bay PMPA. The Voisey’s Bay PMPA had a carrying value at June 30, 2019 of $393 million. Management estimated that the recoverable amount at June 30, 2019 under the Voisey’s Bay PMPA was $227 million, representing its FVLCD and resulting in an impairment charge of $166 million. The recoverable amount related to the Voisey’s Bay PMPA was estimated using an average discount rate of 7% and the market price of cobalt of $14.83 per pound. As this valuation technique requires the use of estimates and assumptions such as commodity prices, discount rates, recoverable pounds of cobalt and operating performance, it is classified within Level 3 of the fair value hierarchy. During the six months ended December 31, 2019, there were no further indications of impairment or any indications of impairment reversal that resulted in a reassessment of the recoverable value of the Voisey’s Bay PMPA.

Early Deposit Mineral Stream In

Early Deposit Mineral Stream Interests	12 Months Ended
	Dec. 31, 2019
Text block [abstract]
Early Deposit Mineral Stream Interests	12. Early Deposit Mineral Stream Interests Early deposit mineral stream interests represent agreements relative to early stage development projects whereby Wheaton can choose not to proceed with the agreement once certain documentation has been received including, but not limited to, feasibility studies, environmental studies and impact assessment studies (please see Note 29 for more information). Once Wheaton has elected to proceed with the agreement, the carrying value of the stream will be transferred to Mineral Stream Interests. The following table summarizes the early deposit mineral stream interests currently owned by the Company: Attributable Production to be Purchased Early Deposit Mineral Stream Interests Mine Owner Location of Mine Upfront Consideration 1 Upfront Consideration to be Paid 1, 2 Total Upfront Consideration¹ Gold Silver Term of Agreement Toroparu Gold X Guyana $ 15,500 $ 138,000 $ 153,500 10% 50% Life of Mine Cotabambas Panoro Peru 8,500 131,500 140,000 25% ³ 100% ³ Life of Mine Kutcho Kutcho Canada 7,000 58,000 65,000 100% 4 100% 4 Life of Mine $ 31,000 $ 327,500 $ 358,500 1) Expressed in thousands of United States dollars; excludes closing costs and capitalized interest, where applicable. 2) Please refer to Note 29 for details of when the remaining upfront consideration to be paid becomes due. 3) Once 90 million silver equivalent ounces attributable to Wheaton have been produced, the attributable production to be purchased will decrease to 16.67% of gold production and 66.67% of silver production for the life of mine. 4) Once 51,000 ounces of gold and 5.6 million ounces of silver have been delivered to Wheaton, the stream will decrease to 66.67% of gold and silver production for the life of mine.

Mineral Royalty Interest

Mineral Royalty Interest	12 Months Ended
	Dec. 31, 2019
Text block [abstract]
Mineral Royalty Interest	13. Mineral Royalty Interest On August 7, 2014, the Company purchased a 1.5% net smelter return royalty interest (the “Royalty”) in the Metates properties located in Mexico from Chesapeake Gold Corp. (“Chesapeake”) for the life of mine. Under the terms of the agreement, the Company paid total upfront cash consideration of $9 million. In accordance with the terms of the agreement, on August 7, 2019, Chesapeake exercised its option to re-acquire two-thirds two-thirds To date, no revenue has been recognized and no depletion has been taken with respect to this royalty agreement.

Investment in Associate

Investment in Associate	12 Months Ended
	Dec. 31, 2019
Text block [abstract]
Investment in Associate	14. Investment in Associate Kutcho On June 6, 2019, the Company acquired 1 million common shares and warrants to acquire an additional 1 million common shares of Kutcho Copper Corp. (“Kutcho”) for Cdn$0.2 million, resulting in the Company owning 7,153,846 common shares and warrants to acquire an additional 4,076,923 common shares of Kutcho. Additionally, the Company holds a Cdn$20 million subordinated secured convertible term debt loan agreement bearing interest at 10% per annum with Kutcho (the “Kutcho Convertible Note” – see Note 15). As at December 31, 2019, Kutcho had 68,247,628 shares issued and outstanding, resulting in Wheaton owning approximately 10% of Kutcho on a non-diluted non-fully non-diluted Kutcho’s principal address is 1030 West Georgia Street, Suite 717, Vancouver, British Columbia, Canada, V6E 2Y3. Indicator of Impairment Since the original investment in Kutcho on December 14, 2017, the value of Kutcho’s shares have had a significant decline in value. This decline in value was determined to be an indicator of impairment relative to the Company’s investment in Kutcho. During the year, the Company recorded an impairment charge of $1.6 million to its recoverable amount of $1 million. The recoverable amount, which represents Kutcho’s FVLCD, was calculated as the quoted market price of the common share multiplied by the quantity of shares held by the Company, and as such is classified within Level 1 of the fair value hierarchy. A continuity schedule of the Kutcho Investment in Associate from January 1, 2018 to December 31, 2019 is presented below: (in thousands) Investment in At January 1, 2018 $ 2,994 Share of losses (432) At December 31, 2018 $ 2,562 Amount invested 133 Share of losses (164) Impairment (1,649) At December 31, 2019 $ 882

Convertible Notes Receivable

Convertible Notes Receivable	12 Months Ended
	Dec. 31, 2019
Text block [abstract]
Convertible Note Receivable	15. Convertible Notes Receivable Kutcho Copper Corp. Effective December 14, 2017, in connection with the Kutcho Early Deposit Agreement (Note 12), the Company advanced to Kutcho $16 million (Cdn$20 million) and received the Kutcho Convertible Note. The Kutcho Convertible Note, which has a seven year term to maturity, carries interest at 10% per annum, compounded and payable semi-annually. Kutcho elected to defer the first three interest payments until December 31, 2019 and, as per an amendment entered into on November 27, 2019, can defer this interest in addition to the fourth interest payment for an additional period not to exceed 4 years. The deferred interest carries interest at 15% per annum, compounded semi-annually. As part of the November 27, 2019 amendment, Wheaton forfeited its option to convert the outstanding deferred interest into common shares of Kutcho. At any time prior to the maturity date, the Company has the right to convert all or any part of the outstanding amount of the Kutcho Convertible Note, excluding outstanding deferred interest, into common shares of Kutcho at Cdn$0.8125 per share. Kutcho has the right to repay the Kutcho Convertible Note early, subject to the applicable pre-payment ● 25% of the outstanding amount if pre-paid ● 20% of the outstanding amount if pre-paid ● 15% of the outstanding amount if pre-paid Gold X Mining Corp. Effective December 24, 2019, in connection with the Toroparu Early Deposit Agreement (Note 12), the Company advanced $10 million to Gold X as part of a $20 million 10% secured convertible debenture private placement offering completed by Gold X (the “Gold X Convertible Note”). The Gold X Convertible Note, which has a three-year term to maturity, carries interest at 10% per annum, compounded semi-annually and payable annually. Gold X has the option to defer the interest payments until December 4, 2022, being the maturity date. Wheaton can, at its option, convert the deferred interest into common shares of Gold X. At any time prior to the maturity date, the Company has the right to convert all or any part of the outstanding amount of the Gold X Convertible Note, converted into Canadian dollars using the exchange rate published by the Bank of Canada on the business day prior to the conversion, into common shares of Gold X at Cdn$3.20 per share. Convertible Notes Receivable Valuation Summary The Kutcho Convertible Note and Gold X Convertible Note are revalued quarterly by discounting the stream of future interest and principal payments at the rate of interest prevailing at the balance sheet date for instruments of similar term and risk, and adding this value to the value of the convertibility feature which is estimated using a Black-Scholes model based on assumptions including risk free interest rate, expected dividend yield, expected volatility and expected remaining life of the respective notes. A continuity schedule of these convertible notes from January 1, 2018 to December 31, 2019 is presented below: (in thousands) Kutcho Convertible Note Gold X Convertible Note Total At January 1, 2018 $ 15,777 $ - $ 15,777 Fair value gain (loss) reflected in net earnings (2,878) - (2,878) At December 31, 2018 $ 12,899 $ - $ 12,899 Amount advanced - 10,000 10,000 Fair value gain (loss) reflected in net earnings (1,062) 19 (1,043) At December 31, 2019 $ 11,837 $ 10,019 $ 21,856

Long-Term Equity Investments

Long-Term Equity Investments	12 Months Ended
	Dec. 31, 2019
Text block [abstract]
Long-Term Equity Investments	16. Long-Term Equity Investments Common Shares Held December 31, 2019 (in thousands, except shares owned) Shares Owned Percentage of Outstanding Fair Value Fair Value Realized Bear Creek 13,264,305 12.84% $ 27,983 $ 17,871 $ - Sabina 11,700,000 3.95% 17,296 6,747 - First Majestic 20,239,590 9.73% 248,137 130,346 521 Other 16,341 6,972 (7,803) Total $ 309,757 $ 161,936 $ (7,282) December 31, 2018 (in thousands, except shares owned) Shares Owned Percentage of Fair Value Fair Value Realized Bear Creek 13,264,305 13% $ 10,112 $ (11,247 ) $ - Sabina 11,700,000 4% 10,549 (10,622 ) - Arizona Mining n.a. n.a. - 20,153 34,061 First Majestic 20,914,590 11% 123,187 (27,813 ) - Other 20,905 (10,456 ) - Total $ 164,753 $ (39,985 ) $ 34,061 The Company’s long-term investments in common shares (“LTI’s”) are held for long-term strategic purposes and not for trading purposes. As such, the Company has elected to reflect any fair value adjustments, net of tax, as a component of other comprehensive income (“OCI”). The cumulative gain or loss will not be reclassified to net earnings on disposal of these long-term investments. While long-term investments in warrants are also held for long-term strategic purposes, they meet the definition of a derivative and therefore are classified as financial assets with fair value adjustments being recorded as a component of net earnings under the classification Other (Income) Expense. Warrants that do not have a quoted market price are valued using a Black-Scholes option pricing model. By holding these long-term investments, the Company is inherently exposed to various risk factors including currency risk, market price risk and liquidity risk. Acquisitions of Long-Term Equity Investments In connection with the termination of the San Dimas SPA (Note 10), on May 10, 2018, the Company received 20,914,590 First Majestic common shares with a fair value of $151 million. On April 25, 2018, the Company made a strategic investment of $1 million by participating in a private placement undertaken by Tradewind Markets, Inc. (“Tradewind”), a financial technology company that uses blockchain to speed up and streamline digital gold and silver trading. On July 17, 2018, the Company acquired 7,093,392 common shares of Adventus Zinc Corporation (“Adventus”) in a private placement transaction, for total consideration of Cdn$6 million, representing 9.99% of Adventus’ issued and outstanding common shares. Concurrently, the Company paid an additional Cdn$1 million to acquire a right of first refusal on any new streaming or royalty transactions on precious metals on the Adventus existing properties in Ecuador and a right of first offer on any subsequently acquired properties in Ecuador (the “Adventus ROFR”). On May 17, 2019, the Company acquired an additional 1,371,711 common shares of Adventus in a private placement transaction for total consideration of Cdn$1 million, thus maintaining the Company’s ownership position. The shares of Tradewind and Adventus have been classified as part of the Other long-term investments in these financial statements, while the Adventus ROFR has been classified as a component of Other non-current Disposal of Long-Term Equity Investments On August 10, 2018, South32 Limited announced that it had completed its acquisition of all the issued and outstanding common shares of Arizona Mining Inc. (“Arizona Mining”), which resulted in a disposition of the Company’s investment in Arizona Mining for total proceeds of $48 million (Cdn$62 million), and a realized gain of $34 million. During the year ended December 31, 2019, the Company disposed of 675,000 shares of First Majestic reducing its ownership position to under 10% of the issued and outstanding common shares. The Company received total proceeds of $5 million and realized a gain on disposal of $0.5 million. During the year ended December 31, 2019, the Company disposed of several investments which had been classified as “Other” long-term equity investments as they were no longer considered to have strategic value. The Company received total proceeds of $13 million and realized a loss on disposal of $8 million.

Property, Plant and Equipment

Property, Plant and Equipment	12 Months Ended
	Dec. 31, 2019
Text block [abstract]
Property, Plant and Equipment	17. Property, Plant and Equipment December 31, 2019 (in thousands) Leasehold Right of Use Other Total Cost Balance - January 1, 2019 $ 4,378 $ - $ 3,318 $ 7,696 Additions upon adoption of IFRS 16 - 4,679 - 4,679 Additions 9 59 547 615 Disposals (7) - (29) (36) Balance - December 31, 2019 $ 4,380 $ 4,738 $ 3,836 $ 12,954 Accumulated Depreciation Balance - January 1, 2019 $ (2,024) $ - $ (2,046) $ (4,070) Disposals 7 - 29 36 Depreciation (501) (704) (404) (1,609) Balance - December 31, 2019 $ (2,518) $ (704) $ (2,421) $ (5,643) Net book value - December 31, 2019 $ 1,862 $ 4,034 $ 1,415 $ 7,311

Credit Facilities

Credit Facilities	12 Months Ended
	Dec. 31, 2019
Text block [abstract]
Credit Facilities	18. Credit Facilities 18.1. Bank Debt (in thousands) December 31 December 31 Current portion $ - $ - Long-term portion 874,500 1,264,000 Gross bank debt outstanding 1 $ 874,500 $ 1,264,000 1) There is $5 million unamortized debt issue costs associated with the Revolving Facility which have been recorded as a long-term asset under the classification Other (see Note 26). On February 27, 2020, the term of the Company’s $2 billion revolving term loan (“Revolving Facility”) was extended by an additional year, with the facility now maturing on February 27, 2025. The Company incurred fees of $1 million in relation to this extension. The Company’s Revolving Facility has financial covenants which require the Company to maintain: (i) a net debt to tangible net worth ratio of less than or equal to 0.75:1; and (ii) an interest coverage ratio of greater than or equal to 3.00:1. Only cash interest expenses are included for the purposes of calculating the interest coverage ratio. The Company is in compliance with these debt covenants as at December 31, 2019. Effective February 27, 2020, the Company’s option, amounts drawn under the Revolving Facility incur interest based on the Company’s leverage ratio at either (i) LIBOR plus 1.00% to 2.05%; or (ii) the Bank of Nova Scotia’s Base Rate plus 0.00% to 1.05%. Undrawn amounts under the Revolving Facility are subject to a stand-by The Revolving Facility, which is classified as a financial liability and reported at amortized cost using the effective interest method, can be drawn down at any time to finance acquisitions, investments or for general corporate purposes. 18.2. Letters of Guarantee On March 15, 2016, the Company entered into a letter of guarantee in favour of Her Majesty the Queen in Right of Canada, as represented by the Minister of National Revenue in the amount of Cdn$192 million. On March 15, 2017 and 2018, additional letters of guarantee in the amount of Cdn$11 million and Cdn$10 million, respectively, were delivered to the Canada Revenue Agency (“CRA”) as security for additional estimated interest for the respective following year. The letters of guarantee, which carried an annual fee of 100 basis points, were cancelled effective December 18, 2018. 18.3. Lease Liabilities The lease liability relative to the Company’s offices located in Vancouver, Canada and the Cayman Islands is as follows: (in thousands) December 31 December 31 Current portion $ 724 $ - Long-term portion 3,528 - Total lease liabilities $ 4,252 $ - The maturity analysis of these leases is as follows: December 31 (in thousands) 2019 Not later than 1 year $ 724 Later than 1 year and not later than 5 years 3,294 Later than 5 years 234 Total lease liabilities $ 4,252 18.4. Finance Costs A summary of the Company’s finance costs relative to the above facilities during the period is as follows: Years Ended December 31 (in thousands) Note 2019 2018 Interest Expense During Period Average principal outstanding during period $ 1,099,846 $ 1,005,222 Average effective interest rate during period 18.1 4.07% 3.57% Total interest expense incurred during period $ 44,767 $ 35,839 Costs related to undrawn credit facilities 18.1 3,834 3,707 Interest expense - lease liabilities 18.3 175 - Letters of guarantee 18.2 (46) 1,641 Total finance costs $ 48,730 $ 41,187

Issued Capital

Issued Capital	12 Months Ended
	Dec. 31, 2019
Text block [abstract]
Issued Capital	19. Issued Capital December 31 December 31 (in thousands) Note 2019 2018 Issued capital Share capital issued and outstanding: 447,771,433 common shares (December 31, 2018: 444,336,361 common shares) 19.1 $ 3,599,203 $ 3,516,437 19.1. Shares Issued The Company is authorized to issue an unlimited number of common shares having no par value and an unlimited number of preference shares issuable in series. As at December 31, 2019, the Company had no preference shares outstanding. A continuity schedule of the Company’s issued and outstanding common shares from January 1, 2018 to December 31, 2019 is presented below: Number of Shares Weighted Average Price At January 1, 2018 442,724,309 Share purchase options exercised 1 46,800 Cdn$24.28 Restricted share units released 1 104,178 $0.00 Dividend reinvestment plan 2 1,461,074 US$18.28 At December 31, 2018 444,336,361 Share purchase options exercised 1 2,039,735 Cdn$25.79 Restricted share units released 1 133,670 $0.00 Dividend reinvestment plan 2 1,261,667 US$24.31 At December 31, 2019 447,771,433 1) The weighted average price of share purchase options exercised and restricted share units released represents the respective exercise price. 2) The Company has implemented a dividend reinvestment plan (“DRIP”) whereby shareholders can elect to have dividends reinvested directly into additional Wheaton common shares. The weighted average price for common shares issued under the DRIP represents the volume weighted average price of the common shares on the five trading days preceding the dividend payment date, less a discount of 3%. 19.2. Dividends Declared Years Ended December 31 (in thousands, except per share amounts) 2019 2018 Dividends declared per share $ 0.36 $ 0.36 Average number of shares eligible for dividend 446,267 443,386 Total dividends paid $ 160,656 $ 159,619 Paid as follows: Cash $ 129,986 81% $ 132,915 83% DRIP 1 30,670 19% 26,704 17% Total dividends paid $ 160,656 100% $ 159,619 100% Shares issued under the DRIP 1,262 1,461 1) The Company has implemented a DRIP whereby shareholders can elect to have dividends reinvested directly into additional Wheaton common shares. 2) As at December 31, 2019, cumulative dividends of $1,078 million have been declared and paid by the Company.

Reserves

Reserves	12 Months Ended
	Dec. 31, 2019
Text block [abstract]
Reserves	20. Reserves Note December 31 December 31 (in thousands) 2019 2018 Reserves Share purchase warrants 20.1 $ 83,077 $ 83,077 Share purchase options 20.2 24,010 31,002 Restricted share units 20.3 6,405 5,970 Long-term investment revaluation reserve, net of tax 20.4 47,209 (112,156 ) Total reserves $ 160,701 $ 7,893 20.1. Share Purchase Warrants The Company’s share purchase warrants (“warrants”) are presented below: Number of Weighted Exchange Share Warrants outstanding 10,000,000 $43.75 1.00 $ 83,077 The warrants, which expire on February 28, 2023, were valued using a Black-Scholes option pricing model. Each warrant entitles the holder the right to purchase one of the Company’s common shares. 20.2. Share Purchase Options The Company has established an equity settled share purchase option plan whereby the Company’s Board of Directors may, from time to time, grant options to employees or consultants. The maximum term of any share purchase option may be ten years, but generally options are granted with a term to expiry of five years. The exercise price of an option is not less than the closing price on the TSX on the last trading day preceding the grant date. The vesting period of the options is determined at the discretion of the Company’s Board of Directors at the time the options are granted, but generally vest over a period of two years. Each share purchase option converts into one common share of Wheaton on exercise. No amounts are paid or payable by the recipient on receipt of the option. The options do not carry rights to dividends or voting rights. Options may be exercised at any time from the date of vesting to the date of their expiry, subject to certain black-out The Company expenses the fair value of share purchase options that are expected to vest on a straight-line basis over the vesting period using the Black-Scholes option pricing model to estimate the fair value for each option at the date of grant. The Black-Scholes model was developed for use in estimating the fair value of traded options that have no vesting restrictions. The model requires the use of subjective assumptions, including expected share price volatility. Historical data has been considered in setting the assumptions. Expected volatility is determined by considering the trailing 30-month Years Ended December 31 2019 2018 Black-Scholes weighted average assumptions Grant date share price and exercise price Cdn$32.88 Cdn$26.25 Expected dividend yield 1.49% 1.73% Expected volatility 31% 35% Risk-free interest rate 1.60% 1.91% Expected option life, in years 2.5 2.5 Weighted average fair value per option granted Cdn$6.10 Cdn$5.49 Number of options issued during the period 583,500 549,210 Total fair value of options issued (000’s) $ 2,652 $ 2,347 The following table summarizes information about the options outstanding and exercisable at December 31, 2019: Exercise Price (Cdn$) Exercisable Options Non-Exercisable Options Total Options Outstanding Weighted Remaining Contractual Life $23.26 691,250 - 691,250 1.2 years $23.27¹ 58,850 - 58,850 1.2 years $24.11 8,440 - 8,440 2.6 years $25.48 115,000 - 115,000 0.2 years $26.24 203,240 219,510 422,750 3.2 years $26.26¹ 5,900 - 5,900 0.2 years $26.51¹ 29,450 49,320 78,770 3.2 years $26.79¹ 47,900 - 47,900 2.2 years $27.03 - 2,230 2,230 4.3 years $27.51 380,900 - 380,900 2.2 years $27.60 1,820 - 1,820 2.4 years $28.43¹ 1,095 1,095 2,190 3.3 years $30.82 - 5,970 5,970 4.4 years $31.89¹ - 95,480 95,480 4.2 years $32.93 - 469,040 469,040 4.2 years $39.52 8,000 - 8,000 1.6 years 1,551,845 842,645 2,394,490 2.5 years 1) US$ share purchase options converted to Cdn$ using the exchange rate of 1.2988, being the Cdn$/US$ exchange rate at December 31, 2019. At December 31, 2019, there were 2,394,490 share purchase options outstanding with a weighted average exercise price of Cdn$27.08 per option. For the comparable period in 2018, there were 3,883,350 share purchase options outstanding with a weighted average exercise price of Cdn$25.71 per option. A continuity schedule of the Company’s outstanding share purchase options from January 1, 2018 to December 31, 2019 is presented below: Number of Options Outstanding Weighted Average Exercise Price At January 1, 2018 4,232,260 Cdn$26.71 Granted (fair value - $2 million or Cdn$5.49 per option) 549,210 26.25 Exercised (46,800 ) 24.28 Forfeited (7,320 ) 29.24 Expired (844,000 ) 32.70 At December 31, 2018 3,883,350 Cdn$25.71 Granted (fair value - $3 million or Cdn$6.10 per option) 583,500 32.88 Exercised (2,039,735 ) 25.79 Forfeited (15,475 ) 31.04 Expired (17,150 ) 30.69 At December 31, 2019 2,394,490 Cdn$27.08 As it relates to share purchase options, during the year ended December 31, 2019, the weighted average share price at the time of exercise was Cdn$34.83 per share, as compared to Cdn$28.10 per share per share during the comparable period in 2018. 20.3. Restricted Share Units (“RSUs”) The Company has established an RSU plan whereby RSUs will be issued to eligible employees or directors as determined by the Company’s Board of Directors or the Company’s Compensation Committee. RSUs give the holder the right to receive a specified number of common shares at the specified vesting date. RSUs generally vest over a period of two years. Compensation expense related to RSUs is recognized over the vesting period based upon the fair value of the Company’s common shares on the grant date and the awards that are expected to vest. The fair value is calculated with reference to the closing price of the Company’s common shares on the TSX on the business day prior to the date of grant. RSU holders receive a cash payment based on the dividends paid on the Company’s common shares in the event that the holder of a vested RSU has elected to defer the release of the RSU to a future date. This cash payment is reflected as a component of net earnings under the classification General and Administrative. A continuity schedule of the Company’s restricted share units outstanding from January 1, 2018 to December 31, 2019 is presented below: Number of RSUs Outstanding Weighted Average Intrinsic Value at At January 1, 2018 313,846 $20.71 Granted (fair value - $3 million) 161,060 20.42 Released (104,178) 21.49 Forfeited (595) 20.48 At December 31, 2018 370,133 $20.36 Granted (fair value - $3 million) 132,620 24.51 Released (133,670) 20.82 Forfeited (2,760) 23.19 At December 31, 2019 366,323 $21.67 During the year ended December 31, 2019, the Company issued 132,620 RSUs with a fair value of $3 million or Cdn$32.89 per RSU. For the same period in 2018, the Company issued 161,060 RSUs with a fair value of $3 million or Cdn$26.25 per RSU. As of December 31, 2019, there were 366,323 RSUs outstanding. For the comparable period in 2018, there were 370,133 RSUs outstanding. 20.4. Long-Term Investment Revaluation Reserve The Company’s long-term investments in common shares (Note 16) are held for long-term strategic purposes and not for trading purposes. The Company has chosen to designate these long-term investments in common shares as financial assets with fair value adjustments being recorded as a component of OCI as it believes that this provides a more meaningful presentation for long-term strategic investments, rather than reflecting changes in fair value as a component of net earnings. As some of these long-term investments are denominated in Canadian dollars, changes in their fair value is affected by both the change in share price in addition to changes in the Cdn$/US$ exchange rate. Where the fair value of a long-term investment in common shares held exceeds its tax cost, the Company recognizes a deferred income tax liability. To the extent that the value of the long-term investment subsequently declines, the deferred income tax liability is reduced. However, where the fair value of the long-term investment decreases below the tax cost, the Company does not recognize a deferred income tax asset on the unrealized capital loss unless it is probable that the Company will generate future capital gains to offset the loss. A continuity schedule of the Company’s long-term investment revaluation reserve from January 1, 2018 to December 31, 2019 is presented below: (in thousands) Change in Deferred Total At January 1, 2018 $ (38,110) $ (1,937) $ (40,047) Unrealized gain (loss) on LTIs 1 (39,985) (2,662) (42,647) Reallocate reserve to retained earnings upon disposal of LTIs 1 (34,061) 4,599 (29,462) At December 31, 2018 $ (112,156) $ - $ (112,156) Unrealized gain (loss) on LTIs 1 161,936 (9,623) 152,313 Reallocate reserve to retained earnings upon disposal of LTIs 1 16 7,282 (230) 7,052 At December 31, 2019 $ 57,062 $ (9,853) $ 47,209 1) LTIs refers to long-term investments in common shares held.

Stock Based Compensation

Stock Based Compensation	12 Months Ended
	Dec. 31, 2019
Text block [abstract]
Stock Based Compensation	21. Stock Based Compensation The Company’s stock based compensation consists of share purchase options (Note 20.2), restricted share units (Note 20.3) and performance share units (Note 21.1). The accrued value of share purchase options and restricted share units are reflected as reserves in the shareholder’s equity section of the Company’s balance sheet while the accrued value associated with performance share units is reflected as an accrued liability. 21.1. Performance Share Units (“PSUs”) The Company has established a Performance Share Unit Plan (“the PSU plan”) whereby PSUs will be issued to eligible employees as determined by the Company’s Board of Directors or the Company’s Compensation Committee. PSUs issued under the PSU plan entitle the holder to a cash payment at the end of a three year performance period equal to the number of PSUs granted, multiplied by a performance factor and multiplied by the fair market value of a Wheaton common share on the expiry of the performance period. The performance factor can range from 0% to 200% and is determined by comparing the Company’s total shareholder return to those achieved by various peer companies, the Philadelphia Gold and Silver Index and the price of gold and silver. Compensation expense for the PSUs is recorded on a straight-line basis over the three year vesting period. The amount of compensation expense is adjusted at the end of each reporting period to reflect (i) the fair value of common shares; (ii) the number of PSUs anticipated to vest; and (iii) the anticipated performance factor. During the year ended December 31, 2019, the Company issued 191,410 PSUs as compared to 220,260 PSUs during the comparable period of the previous year. A continuity schedule of the Company’s outstanding PSUs (assuming a performance factor of 100% is achieved over the performance period) and the Company’s PSU accrual from January 1, 2018 to December 31, 2019 is presented below: (in thousands, except for number of PSUs outstanding) Number of Outstanding PSU accrual At January 1, 2018 656,599 $ 1,430 Granted 220,260 - Accrual related to the fair value of the PSUs outstanding - 9,517 Foreign exchange adjustment - (185) Paid 1 (218,615) - Forfeited (2,517) (6) At December 31, 2018 655,727 $ 10,756 Granted 191,410 - Accrual related to the fair value of the PSUs outstanding - 17,174 Foreign exchange adjustment - 479 Paid (229,050) (9,325) Forfeited (13,395) (15) At December 31, 2019 604,692 $ 19,069 1) The PSUs paid out during 2018 had a performance factor of 0% resulting in a cash disbursement of $Nil. A summary of the PSUs outstanding at December 31, 2019 is as follows: Year of Grant Year of Maturity Number outstanding Estimated Value Anticipated Performance Factor at Maturity Percent of Dec 31, 2019 PSU Liability at Dec 31, 2019 2017 2020 204,142 $28.46 199% 92% $ 10,668 2018 2021 213,820 $28.46 192% 59% 6,895 2019 2022 186,730 $28.45 111% 26% 1,506 604,692 $ 19,069

Earnings per Share ("EPS") and

Earnings per Share ("EPS") and Diluted Earnings per Share ("Diluted EPS")	12 Months Ended
	Dec. 31, 2019
Profit or loss [abstract]
Earnings per Share ("EPS") and Diluted Earnings per Share ("Diluted EPS")	22. Earnings per Share (“EPS”) and Diluted Earnings per Share (“Diluted EPS”) Diluted earnings per share is calculated using the treasury method which assumes that outstanding share purchase options and warrants, with exercise prices that are lower than the average market price of the Company’s common shares for the relevant period, are exercised and the proceeds are used to purchase shares of the Company at the average market price of the common shares for the relevant period. Diluted EPS is calculated based on the following weighted average number of shares outstanding: Years Ended December 31 (in thousands) 2019 2018 Basic weighted average number of shares outstanding 446,021 443,407 Effect of dilutive securities Share purchase options 627 81 Restricted share units 282 374 Diluted weighted average number of shares outstanding 446,930 443,862 The following table lists the number of share purchase options and share purchase warrants excluded from the computation of diluted earnings per share because the exercise prices exceeded the average market value of the common shares of Cdn$32.40, compared to Cdn$25.32 for the comparable period in 2018. Years Ended December 31 (in thousands) 2019 2018 Share purchase options 477 2,801 Share purchase warrants 10,000 10,000 Total 10,477 12,801

Supplemental Cash Flow Informat

Supplemental Cash Flow Information	12 Months Ended
	Dec. 31, 2019
Text block [abstract]
Supplemental Cash Flow Information	23. Supplemental Cash Flow Information Change in Non-Cash Years Ended December 31 (in thousands) 2019 2018 Change in non-cash Accounts receivable $ (2,514) $ 828 Accounts payable and accrued liabilities (9,791) 7,977 Other 468 159 Total change in non-cash $ (11,837) $ 8,964 Cash Outflow Relative to Leases During the year ended December 31, 2019, the total cash outflows relative to the Company’s leases were $804,000. Non-Cash As more fully described in note 10, during 2018 the Company received 20,914,590 First Majestic common shares with a fair value of $151 million as partial consideration for the termination of the previously owned San Dimas SPA. Non-Cash As more fully described in Note 19.2, during the year ended December 31, 2019, the Company declared and paid dividends to its shareholders in the amount of $0.36 per common share for total dividends of $161 million. Approximately 19% of shareholders elected to have their dividends reinvested in common shares of the Company under the Company’s dividend reinvestment plan (“DRIP”). As a result, $130 million of dividend payments were made in cash and $31 million in common shares issued. For the comparable period in 2018, the Company declared and paid dividends to its shareholders in the amount of $0.36 per common share for total dividends of $160 million, with the payment being comprised of $133 million in cash and $27 million in common shares issued.

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2019
Text block [abstract]
Income Taxes	24. Income Taxes A summary of the Company’s income tax expense (recovery) is as follows: Income tax recognized in net earnings is comprised of the following: Years Ended December 31 (in thousands) 2019 2018 Current income tax expense related to foreign jurisdictions $ 73 $ 86 Deferred income tax expense (recovery) related to: Origination and reversal of temporary differences $ 7,311 $ 841 Write down (reversal of write down) or recognition of prior period temporary differences (16,521) (5,393) Total deferred income tax expense (recovery) from operations $ (9,210) $ (4,552) Total income tax expense (recovery) from operations $ (9,137) $ (4,466) Income tax expense related to CRA Settlement 1 Current income tax expense related to CRA Settlement $ 71 $ 4,020 Reversal of previously recognized non-capital - 3,848 Income tax expense offset by previously unrecognized non-capital - 12,466 Total income tax expense related to CRA Settlement 2 $ 71 $ 20,334 Income tax expense (recovery) recognized in net earnings $ (9,066) $ 15,868 1) Reference to the CRA Settlement refers to the settlement of the 2005 to 2010 tax dispute and the application of the CRA Settlement principles to the 2011 to 2017 taxation years. Refer to the discussion on page 109 for more information. 2) The figures for 2018 are net of an $18 million tax benefit relating to non-capital Income tax recognized as a component of OCI is comprised of the following: Years Ended December 31 (in thousands) 2019 2018 Income tax expense (recovery) related to LTIs - common shares held $ 9,623 $ 2,662 Income tax recognized directly in equity is comprised of the following: Years Ended December 31 (in thousands) 2019 2018 Income tax expense (recovery) related to share issue costs Origination and reversal of temporary differences $ - $ 1,078 Write down (reversal of write down) or recognition of prior period temporary differences $ (376) $ (3,001) Income tax expense (recovery) from operations $ (376) $ (1,923) Income tax recovery related to CRA Settlement Benefit of previously unrecognized non-capital $ - $ (12,466) Income tax expense (recovery) recognized in equity $ (376) $ (14,389) The provision for income taxes differs from the amount that would be obtained by applying the statutory income tax rate to consolidated earnings before income taxes due to the following: Years Ended December 31 (in thousands) 2019 2018 Earnings before income taxes $ 77,072 $ 442,983 Canadian federal and provincial income tax rates 27.00% 27.00% Income tax expense (recovery) based on above rates $ 20,809 $ 119,605 Non-deductible 3,291 4,676 Differences in tax rates in foreign jurisdictions (78,724) (133,361) Impact of CRA Settlement 71 20,334 Current period unrecognized temporary differences - impairment of mineral stream interests 44,796 - Current period unrecognized temporary differences - other 17,212 10,007 Write down (reversal of write down) or recognition of prior period temporary differences (16,521) (5,393) Income tax expense (recovery) $ (9,066) $ 15,868 The majority of the Company’s income generating activities, including the sale of precious metals, is conducted by its 100% owned subsidiary Wheaton Precious Metals International Ltd., which operates in the Cayman Islands and is not subject to income tax. The recognized deferred income tax assets and liabilities are offset on the balance sheet and relate to Canada, except for the foreign withholding tax. The movement in deferred income tax assets and liabilities for the years ended December 31, 2019 and December 31, 2018, respectively, is shown below: Year Ended December 31, 2019 Recognized deferred income tax assets and liabilities Opening Recovery Recovery Recovery Closing Balance Deferred tax assets Non-capital 1 $ 3,823 $ 4,497 $ - $ 436 $ 8,756 Capital loss carryforward 2 - 4,503 4,450 - 8,953 Other 3 387 307 - - 694 Deferred tax liabilities Interest capitalized for accounting (87) - - - (87) Debt and share financing fees 4 (591) (60) - (60) (711) Unrealized gains on long-term investments - - (14,073) - (14,073) Mineral stream interests 5 (3,532) - - - (3,532) Foreign withholding tax (111) (37) - - (148) Total $ (111) $ 9,210 $ (9,623) $ 376 $ (148) 1) As at December 31, 2019, the Company had recognized the tax effect on $32 million of non-capital 2) As at December 31, 2019, the Company had recognized the tax effect on $33 million of net capital losses to offset unrealized taxable capital gains on long-term investments. 3) Other includes capital assets, charitable donation carryforward, and PSU and pension liabilities. 4) Debt and share financing fees are deducted over a five year period for Canadian income tax purposes. For accounting purposes, debt financing fees are deducted over the term of the credit facility and share financing fees are charged directly to issued capital. 5) The Company’s position, as reflected in its filed Canadian income tax returns and consistent with the terms of the PMPAs, is that the cost of the precious metal acquired under the Canadian PMPAs is equal to the market value while a deposit is outstanding (where applicable to an agreement), and the cash cost thereafter. For accounting purposes, the cost of the mineral stream interests is depleted on a unit-of-production Year Ended December 31, 2018 Recognized deferred income tax assets and liabilities Opening Balance Recovery LTI Recovery Recovery Closing Balance Deferred tax assets Non-capital $ 3,848 $ (2,057) $ - $ - $ 2,032 $ 3,823 Capital loss carryforward 1,965 2,633 (4,598) - - - Other 147 240 - - - 387 Deferred tax liabilities Interest capitalized for accounting (87) - - - - (87) Debt and share financing fees (375) (107) - - (109) (591) Kutcho Convertible Note (29) 29 - - - - Unrealized gains on long-term investments (1,937) 1 4,598 (2,662) - - Mineral stream interests (3,532) - - - - (3,532) Foreign withholding tax (76) (35) - - - (111) Total $ (76) $ 704 $ - $ (2,662) $ 1,923 $ (111) Deferred income tax assets in Canada not recognized are shown below: (in thousands) December 31 December 31 Non-capital 1 $ 19,145 $ 7,209 Debt and equity financing fees 1,383 4,474 Mineral stream interests 107,785 67,717 Other 4,282 3,656 Capital loss carryforward - 7,723 Kutcho Convertible Note 951 648 Unrealized losses on long-term investments 6,733 15,907 Total $ 140,279 $ 107,334 1) As at December 31, 2019, the Company had not recognized the tax effect on $71 million of non-capital At December 31, 2019, the Company has available non-capital non-capital Settlement of the Canada Revenue Agency International Tax Dispute - 2018 On December 13, 2018, the Company reached a settlement with the CRA which provided for a final resolution of the Company’s tax appeal in connection with the reassessment of the 2005 to 2010 taxation years under transfer pricing rules related to the income generated by the Company’s foreign subsidiaries outside of Canada (the “CRA Settlement”). Under the terms of the CRA Settlement, income earned outside of Canada by the Company’s foreign subsidiaries will not be subject to income tax in Canada. The CRA Settlement principles also apply to all taxation years after 2010, subject to there being no material change in facts or change in law or jurisprudence. From time to time there may be proposed legislative changes to law or outstanding legal actions that may have an impact on applicable law or jurisprudence, the outcome, applicability and impact of which is not known or determinable by the Company. After the application of non-capital A significant component of the non-capital 5-year The 2012 to 2015 taxation years remain under audit for international transactions and the 2016 to 2019 taxation years remain open to audit.

Other Current Assets

Other Current Assets	12 Months Ended
	Dec. 31, 2019
Miscellaneous current assets [abstract]
Other Current Assets	25. Other Current Assets The composition of other current assets is shown below: December 31 December 31 (in thousands) Note 2019 2018 Non-revolving $ 431 $ - Prepaid expenses 1,492 1,508 Class action settlement recoverable 29 41,500 - Other 81 33 Total other current assets $ 43,504 $ 1,541 Non-revolving On November 25, 2019, the Company entered into a non-revolving

Other Long-Term Assets

Other Long-Term Assets	12 Months Ended
	Dec. 31, 2019
Text block [abstract]
Other Long-Term Assets	26. Other Long-Term Assets The composition of other long-term assets is shown below: December 31 December 31 (in thousands) Note 2019 2018 Intangible assets $ 3,419 $ 3,291 Debt issue costs - Revolving Facility 18.1 5,154 5,507 Adventus ROFR 16 615 615 Subscription rights 1,524 - Other 3,854 902 Total other long-term assets $ 14,566 $ 10,315 Subscription Rights During December 2019, the Company acquired 1 million subscription rights relative to Caldas Finance Corp. for $1.5 million (Cdn$2 million). On February 28, 2020, upon the successful transfer of the Marmato project assets located in Colombia by Gran Colombia Gold Corp. to Caldas Finance and the completion of a reverse takeover transaction between Caldas Finance and Bluenose Gold Corp. to form a new public company, Caldas Gold Corp., the subscription receipts were automatically converted into common shares and warrants of Caldas Gold Corp. The value of these shares and warrants will be reflected as a component of Other long-term equity investments.

Related Party Transactions

Related Party Transactions	12 Months Ended
	Dec. 31, 2019
Text block [abstract]
Related Party Transactions	27. Related Party Transactions Compensation of Key Management Personnel Key management personnel compensation, including directors, is as follows: Years Ended December 31 (in thousands) 2019 2018 Short-term benefits 1 $ 6,599 $ 7,402 Post-employment benefits 661 56 PSUs 2 10,643 6,001 Equity settled stock based compensation (a non-cash 3 3,709 3,559 Total executive compensation $ 21,612 $ 17,018 1) Short-term employee benefits include salaries, bonuses payable within twelve months of the balance sheet date and other annual employee benefits. 2) As more fully disclosed in Note 21.1, PSU compensation expense is recorded on a straight-line basis over the three year vesting period, with the expense being adjusted at the end of each reporting period to reflect (i) the fair value of common shares; (ii) the number of PSUs anticipated to vest; and (iii) the anticipated performance factor. 3) As more fully disclosed in Notes 20.2 and 20.3, equity settled stock based compensation expense is recorded on a straight-line basis over the vesting period.

Post-Employment Benefit Costs

Post-Employment Benefit Costs	12 Months Ended
	Dec. 31, 2019
Text block [abstract]
Post-Employment Benefit Costs	28. Post-Employment Benefit Costs The Company sponsors a Group Registered Retirement Savings Plan (“RRSP”) for all qualified employees. Participants in the plan can elect to contribute up to the lesser of (i) 50% of the RRSP contribution limit as established under the Income Tax Act (Canada) or (ii) 9% of their annual base salary, and the Company will match this contribution. The assets of the Group RRSP are held separately from those of the Company in independently administered funds. During 2019, the Company implemented an unregistered and unfunded defined contribution plan (known as the Supplemental Employee Retirement Plan, or the “SERP”) for all qualified employees. Under the terms of the SERP, benefits accumulate equal to 10% (or 15% for certain senior employees) of the employee’s base salary plus target bonus, less amounts contributed by the Company under the Group RRSP plan. Interest on this benefit accrues annually based on the 5-year 10-year A summary of the Company’s post-employment benefit costs during the years ended December 31, 2019 and 2018 is summarized below: Years Ended December 31 (in thousands) 2019 2018 Post-employment benefits Supplemental Employee Retirement Plan (SERP) $ 810 $ - Group RRSP 223 226 Total post-employment benefits $ 1,033 $ 226

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2019
Text block [abstract]
Commitments and Contingencies	29. Commitments and Contingencies Mineral Stream Interests The following table summarizes the Company’s commitments to make per-ounce Mineral Stream Interests Attributable Payable Production to be Per Unit of Measurement Cash Payment 1, 2 Term of Date of Gold Silver Palladium Cobalt Gold Silver Palladium Cobalt Peñasquito 0% 25% 0% 0% n/a $ 4.26 n/a n/a Life of Mine 24-Jul-07 Constancia 50% ³ 100% 0% 0% $ 404 4 $ 5.96 4 n/a n/a Life of Mine 8-Aug-12 Salobo 75% 0% 0% 0% $ 408 n/a n/a n/a Life of Mine 28-Feb-13 Sudbury 70% 0% 0% 0% $ 400 n/a n/a n/a 20 years 28-Feb-13 Antamina 0% 33.75% 0% 0% n/a variable 5 n/a n/a Life of Mine 3-Nov-15 San Dimas variable 6 0% 6 0% 0% $ 606 n/a n/a n/a Life of Mine 10-May-18 Stillwater 100% 0% 4.5% 7 0% variable 8 n/a variable 8 n/a Life of Mine 16-Jul-18 Voisey’s Bay 0% 0% 0% 42.4% 9 n/a n/a n/a variable 10 Life of Mine 11-Jun-18 Other Los Filos 0% 100% 0% 0% n/a $ 4.43 n/a n/a 25 years 15-Oct-04 Zinkgruvan 0% 100% 0% 0% n/a $ 4.43 n/a n/a Life of Mine 8-Dec-04 Yauliyacu 0% 100% ¹¹ 0% 0% n/a $ 8.89 ¹² n/a n/a Life of Mine 23-Mar-06 Stratoni 0% 100% 0% 0% n/a $ 9.33 ¹³ n/a n/a Life of Mine 23-Apr-07 Neves-Corvo 0% 100% 0% 0% n/a $ 4.30 n/a n/a 50 years 5-Jun-07 Aljustrel 0% 100% 14 0% 0% n/a variable 15 n/a n/a 50 years 5-Jun-07 Minto 100% 16 100% 0% 0% variable 17 $ 4.27 n/a n/a Life of Mine 20-Nov-08 Keno Hill 0% 25% 0% 0% n/a variable 18 n/a n/a Life of Mine 2-Oct-08 Pascua-Lama 0% 25% 0% 0% n/a $ 3.90 n/a n/a Life of Mine 8-Sep-09 Rosemont 100% 100% 0% 0% $ 450 $ 3.90 n/a n/a Life of Mine 10-Feb-10 Loma de La Plata 0% 12.5% 0% 0% n/a $ 4.00 n/a n/a Life of Mine n/a 19 777 50% 100% 0% 0% $ 420 4 $ 6.20 4 n/a n/a Life of Mine 8-Aug-12 Early Deposit Toroparu 10% 50% 0% 0% $ 400 $ 3.90 n/a n/a Life of Mine 11-Nov-13 Cotabambas 25% 20 100% 20 0% 0% $ 450 $ 5.90 n/a n/a Life of Mine 21-Mar-16 Kutcho 100% ²¹ 100% ²¹ 0% 0% variable ²² variable ²² n/a n/a Life of Mine 14-Dec-17 1) Subject to an annual inflationary adjustment with the exception of Loma de La Plata and Sudbury. 2) All amounts are measured on a per ounce basis with the exception of cobalt which is measured on a per pound basis. Should the prevailing market price for the applicable metal be lower than this amount, the per ounce or per pound cash payment will be reduced to the prevailing market price, with the exception of Yauliyacu where the per ounce cash payment will not be reduced below $4.35 per ounce, subject to an annual inflationary factor. 3) Gold recoveries will be set at 55% for the Constancia deposit and 70% for the Pampacancha deposit until 265,000 ounces of gold have been delivered to the Company. 4) Subject to an increase to $9.90 per ounce of silver and $550 per ounce of gold after the initial 40-year 5) The Company is committed to pay Glencore 20% of the spot price of silver for each ounce of silver delivered under the Antamina PMPA. 6) Under the terms of the San Dimas PMPA, the Company is entitled to an amount equal to 25% of the payable gold production plus an additional amount of gold equal to 25% of the payable silver production converted to gold at a fixed gold to silver exchange ratio of 70:1 from the San Dimas mine. If the average gold to silver price ratio decreases to less than 50:1 or increases to more than 90:1 for a period of 6 months or more, then the “70” shall be revised to “50” or “90”, as the case may be, until such time as the average gold to silver price ratio is between 50:1 to 90:1 for a period of 6 months or more in which event the “70” shall be reinstated. 7) The Company is committed to purchase 4.5% of Stillwater palladium production until 375,000 ounces are delivered to the Company, thereafter 2.25% of Stillwater palladium production until 550,000 ounces are delivered to the Company and 1% of Stillwater palladium production thereafter for the life of mine. 8) The Company is committed to pay Sibanye 18% of the spot price of gold and palladium for each ounce of gold and palladium delivered under the Stillwater PMPA until the market value of gold and palladium delivered to Wheaton, net of the per ounce cash payment, exceeds the initial upfront cash deposit, and 22% of the spot price thereafter. 9) Once the Company has received 31 million pounds of cobalt, the Company’s attributable cobalt production to be purchased will be reduced to 21.2%. 10) The Company is committed to pay Vale 18% of the spot price of cobalt per pound of cobalt delivered under the agreement until the market value of cobalt delivered to Wheaton, net of the per pound cash payment, exceeds the initial upfront cash deposit, and 22% of the spot price thereafter. 11) The Company is committed to purchase from Glencore an amount equal to 100% of the first 1.5 million ounces of payable silver produced at Yauliyacu per annum and 50% of any excess. 12) Should the market price of silver exceed $20 per ounce, in addition to the $8.89 per ounce, the Company is committed to pay Glencore an additional amount for each ounce of silver delivered equal to 50% of the excess, to a maximum of $10 per ounce, such that when the market price of silver is $40 or above, the Company will pay Glencore $18.89 per ounce of silver delivered. 13) In October 2015, in order to incentivize additional exploration and potentially extend the limited remaining mine life of Stratoni, Wheaton and Eldorado Gold agreed to modify the Stratoni PMPA. The primary modification is to increase the production price per ounce of silver delivered to Wheaton over the current fixed price by one of the following amounts: (i) $2.50 per ounce of silver delivered if 10,000 meters of drilling is completed outside of the existing ore body and within Wheaton’s defined area of interest (“Expansion Drilling”); (ii) $5.00 per ounce of silver delivered if 20,000 meters of Expansion Drilling is completed; and (iii) $7.00 per ounce of silver delivered if 30,000 meters of Expansion Drilling is completed. Drilling in all three cases must be completed by December 31, 2020, in order for the agreed upon increase in production price to be initiated. The figures in the above table reflect the fact that Eldorado completed 20,000 meters of Expansion Drilling in June 2019. 14) Wheaton only has the rights to silver contained in concentrate containing less than 15% copper at the Aljustrel mine. 15) In respect of the Aljustrel PMPA, the Company is committed to pay Almina 50% of the amount received under the respective concentrate sales contracts. 16) The Company is committed to acquire 100% of the first 30,000 ounces of gold produced per annum and 50% thereafter. 17) The Company has amended the Minto PMPA such that the per ounce cash payment per ounce of gold delivered will be 75% of the spot price of gold for each ounce of gold delivered under the Minto PMPA. This amended pricing will end on the earlier of (i) 14 months after the first delivery is due; or (ii) once 11,000 ounces of gold have been delivered to the Company. Once this amended pricing ends, the per ounce cash payment per ounce of gold delivered will be $325, subject to an increase in periods where the market price of copper is lower than $2.50 per pound. 18) The production payment related to the Keno Hill silver interest is a function of the silver head grade and silver spot price in the month in which the silver is produced. 19) Terms of the agreement not yet finalized. 20) Once 90 million silver equivalent ounces attributable to Wheaton have been produced, the attributable production to be purchased will decrease to 16.67% of gold production and 66.67% of silver production for the life of mine. 21) Once 51,000 ounces of gold and 5.6 million ounces of silver have been delivered to Wheaton, attributable production to be purchased will decrease to 66.67% of gold and silver production for the life of mine. 22) The Company is committed to pay Kutcho 20% of the spot price of gold and silver for each ounce of gold and silver delivered under the Kutcho Early Deposit Agreement. Other Contractual Obligations and Contingencies Obligations With Scheduled Payment Dates (in thousands) 2020 2021 - 2023 2024 - 2025 After 2025 Sub-Total Other Total Bank debt 1 $ - $ - $ 874,500 $ - $ 874,500 $ - $ 874,500 Interest 2 25,363 68,061 5,877 - 99,301 - 99,301 Payments for mineral stream interests 3 Rosemont 4 - - - - - 231,150 231,150 Loma de La Plata - - - - - 32,400 32,400 Payments for early deposit mineral stream interest Toroparu - - - - - 138,000 138,000 Cotabambas 1,500 4,000 - - 5,500 126,000 131,500 Kutcho - - - - - 58,000 58,000 Non-revolving 5 564 - - - 564 - 564 Leases liabilities 865 2,675 1,144 - 4,684 - 4,684 Total contractual obligations $ 28,292 $ 74,736 $ 881,521 $ - $ 984,549 $ 585,550 $ 1,570,099 1) At December 31, 2019, the Company had $875 million drawn and outstanding on the Revolving Facility. 2) As the applicable interest rates are floating in nature, the interest charges are estimated based on market-based forward interest rate curves at the end of the reporting period combined with the assumption that the principal balance outstanding at December 31, 2019 does not change until the debt maturity date. 3) Does not reflect the contingent payment due related to the Salobo gold purchase agreement (see the Salobo section on the following page). 4) Includes contingent transaction costs of $1 million. 5) Represents the maximum amount available to Kutcho under the non-revolving Rosemont Effective February 8, 2019, the Company amended the Rosemont PMPA. In connection with the amended Rosemont PMPA, the Company is committed to pay Hudbay total upfront cash payments of $230 million in two installments, with the first $50 million being advanced upon Hudbay’s receipt of permitting for the Rosemont project and other customary conditions and the balance of $180 million being advanced once project costs incurred on the Rosemont project exceed $98 million. Under the amendment, the Company is now permitted to elect to pay the deposit in cash or the delivery of common shares and Hudbay has provided a corporate guarantee. Additionally, the Company will be entitled to certain delay payments, including where construction ceases in any material respect, or if completion is not achieved within agreed upon timelines. On August 1, 2019, Hudbay announced that the U.S. District Court for the District of Arizona (“Court”) issued a ruling in the lawsuits challenging the U.S. Forest Service’s issuance of the Final Record of Decision (“FROD”) for the Rosemont project in Arizona. The Court ruled to vacate and remand the FROD such that Rosemont cannot proceed with construction at this time. Hudbay states that they will be appealing the Court’s decision to the U.S. Ninth Circuit Court of Appeals. Loma de La Plata In connection with the Loma de La Plata PMPA, the Company is committed to pay Pan American Silver Corp. (“Pan American”) total upfront cash payments of $32 million following the satisfaction of certain conditions, including Pan American receiving all necessary permits to proceed with the mine construction. Toroparu In connection with the Toroparu Early Deposit Agreement, the Company is committed to pay Gold X an additional $138 million, payable on an installment basis to partially fund construction of the mine. Following the delivery of certain feasibility documentation or after December 31, 2020 if the feasibility documentation has not been delivered to Wheaton by such date, Wheaton may elect not to proceed with the agreement or not pay the balance of the upfront consideration and reduce the gold stream percentage from 10% to 0.909% and the silver stream percentage from 50% to nil. If Wheaton elects to terminate, Wheaton will be entitled to a return of the amounts advanced less $2 million which is non-refundable non-refundable. re-scoping Cotabambas In connection with the Cotabambas Early Deposit Agreement, the Company is committed to pay Panoro a total cash consideration of $140 million, of which $9 million has been paid to date. Once certain conditions have been met, the Company will advance an additional $5 million to Panoro, spread over up to five years. Following the delivery of a bankable definitive feasibility study, environmental study and impact assessment, and other related documents (collectively, the “Cotabambas Feasibility Documentation”), and receipt of permits and construction commencing, the Company may then advance the remaining deposit or elect to terminate the Cotabambas Early Deposit Agreement. If the Company elects to terminate, the Company will be entitled to a return of the portion of the amounts advanced less $2 million payable upon certain triggering events occurring. Kutcho In connection with the Kutcho Early Deposit Agreement, the Company is committed to pay Kutcho a total cash consideration of $65 million, of which $7 million has been paid to date. The remaining $58 million will be advanced on an installment basis to partially fund construction of the mine once certain conditions have been satisfied. The Company will be required to make an additional payment to Kutcho, of up to $20 million, if processing throughput is increased to 4,500 tonnes per day or more within 5 years of attaining commercial production. Salobo The Salobo mine currently has a mill throughput capacity of 24 million tonnes per annum (“Mtpa”). In October 2018, Vale’s Board of Directors approved the investment in the Salobo III mine expansion (the “Salobo Expansion”). The Salobo Expansion is proposed to include a third concentrator line and will use Salobo’s existing infrastructure. Vale anticipates that the Salobo Expansion, which is scheduled to start up in the first half of 2022 with a ramp-up If actual throughput is expanded above 28 Mtpa, then under the terms of the Salobo PMPA, Wheaton will be required to make an additional set payment to Vale based on the size of the expansion, the timing of completion and the grade of the material processed. The set payment ranges from $113 million if throughput is expanded beyond 28 Mtpa by January 1, 2036 up to $953 million if throughput is expanded beyond 40 Mtpa by January 1, 2021. Assuming the Salobo III expansion project achieves 12 Mtpa of additional processing capacity (bringing total processing capacity at Salobo to 36 Mtpa) by the end of 2023, the Company would expect to pay an estimated expansion payment of between $550 million to $670 million. The actual amount and timing of any expansion payment may significantly differ from this estimate depending on the size, timing and processed grade of any expansion. Canada Revenue Agency – Canada Revenue Agency – 2013-2015 Taxation Years - Domestic Reassessments The Company has received Notices of Reassessment for the 2013 to 2015 taxation years in which the CRA is seeking to change the timing of the deduction of upfront payments with respect to the Company’s PMPAs relating to Canadian mining assets, so that the cost of precious metal acquired under these Canadian PMPAs is equal to the cash cost paid on delivery plus an amortized amount of the upfront payment determined on a units-of-production Management believes the Company’s position, as reflected in its filed Canadian income tax returns and consistent with the terms of the PMPAs, that the cost of the precious metal acquired under the Canadian PMPAs is equal to the market value while a deposit is outstanding, and the cash cost thereafter is correct. The Company has filed Notices of Objection and paid 50% of the disputed amounts in order challenge the Domestic Reassessments. The 2016 to 2019 taxation years remain open to a domestic audit. If CRA were to apply the methodology in the Domestic Reassessments to taxation years subsequent to 2015, the Company estimates that losses would arise that could be carried back to reduce tax and interest relating to the Domestic Reassessments to approximately $2 million. U.S. Shareholder Class Action During July 2015, after the Company disclosed that the CRA was proposing that they would issue notices of reassessment for federal and provincial tax, transfer pricing penalties, interest and other penalties for the 2005-2010 taxation years (the “Reassessments”), two putative securities class action lawsuits were filed against the Company in the U.S. District Court for the Central District of California in connection with the proposal (the “Complaints”). On October 19, 2015, the Complaints were consolidated into one action, In re Silver Wheaton Securities Litigation, as against the Company, Randy Smallwood, President & Chief Executive Officer, Gary Brown, Senior Vice President & Chief Financial Officer and Peter Barnes, former Chief Executive Officer (together the “Initial Defendants”) and a lead plaintiff (the “Plaintiff”) was selected. The Plaintiff filed a consolidated amended complaint in December 2015, which focuses on the Reassessments and asserted claims under Sections 10(b) and 20(a) of the Securities Exchange Act of 1934 (“Exchange Act”). On March 27, 2018, the court granted Plaintiff’s motion for leave to file a Second Amended Complaint, which alleges that Initial Defendants made false and/or misleading statements, as well as failed to disclose material adverse facts about the Company’s business, operations, prospects and performance in violation of Sections 10(b) and 20(a) of the Exchange Act, and adds a claim under Section 10(b) against our auditors (together with the “Initial Defendants, the “Defendants”). On February 11, 2020, the parties to the Second Amended Complaint filed a stipulation of settlement with the court that, if approved by the court, will settle the lawsuit for $41.5 million, without admission of liability by any of the Defendants. This settlement amount has been reflected as a component of Other current liabilities on the balance sheet with an offsetting recoverable for the same amount being reflected as a component of Other current assets as the settlement will be fully funded by the Company’s insurance carriers and the other Defendants. The Company will not be required to pay any portion of the settlement. Canadian Shareholder Class Action By Notice of Action dated August 10, 2016 (as amended September 2, 2016), proposed representative plaintiff Suzan Poirier commenced proceedings pursuant to the Class Proceedings Act (Ontario) in the Ontario Superior Court of Justice against Wheaton Precious Metals Corp., Randy Smallwood, President and Chief Executive Officer and Gary Brown, Senior Vice President & Chief Financial Officer. The statement of claim filed alleges, among other things, misrepresentation pursuant to primary and secondary market civil liability provisions under the Securities Act (Ontario), common law negligence and negligent misrepresentation. The claim focuses on the Reassessments. The statement of claim purports to be brought on behalf of persons who (i) acquired Wheaton common shares in Wheaton’s March 2015 public offering, and (ii) acquired Wheaton common shares in the secondary market, other than in the United States, during an alleged class period of August 14, 2013 to July 6, 2015 inclusive. The Company believes that the allegations are without merit and intends to vigorously defend against this matter. No amounts have been recorded for potential liability arising from this claim as no value has been specified in the statement of claim and the Company cannot reasonably predict the outcome. Other Due to the size, complexity and nature of the Company’s operations, various legal and tax matters are outstanding from time to time, including audits, disputes and the matters disclosed in Note 24. By their nature, contingencies will only be resolved when one or more future events occur or fail to occur. The assessment of contingencies inherently involves the exercise of significant judgment and estimates of the outcome of future events. If the Company is unable to resolve any of these matters favorably, there may be a material adverse impact on the Company’s financial performance, cash flows or results of operations. In the event that management’s estimate of the future resolution of these matters changes, the Company will recognize the effects of the changes in its consolidated financial statements in the appropriate period relative to when such changes occur.

Segmented Information

Segmented Information	12 Months Ended
	Dec. 31, 2019
Text block [abstract]
Segmented Information	30. Segmented Information Operating Segments The Company’s reportable operating segments, which are the components of the Company’s business where discrete financial information is available and which are evaluated on a regular basis by the Company’s Chief Executive Officer (“CEO”), who is the Company’s chief operating decision maker, for the purpose of assessing performance, are summarized in the tables below: Year Ended December 31, 2019 (in thousands) Sales Cost of Sales Depletion Gross Margin Impairment 1 Net (Loss) Earnings Cash Flow Total Assets Gold Salobo 5 $ 365,448 $ 106,282 $ 100,803 $ 158,363 $ - $ 158,363 $ 259,166 $ 2,605,257 Sudbury 2, 5 38,234 10,946 22,420 4,868 - 4,868 27,385 344,043 Constancia 5 27,613 7,945 7,141 12,527 - 12,527 19,668 110,406 San Dimas 62,528 26,994 13,828 21,706 - 21,706 35,534 194,367 Stillwater 17,303 3,094 6,433 7,776 - 7,776 14,209 229,994 Other 3, 5 29,919 8,736 8,191 12,992 - 12,992 21,561 13,168 Total gold interests $ 541,045 $ 163,997 $ 158,816 $ 218,232 $ - $ 218,232 $ 377,523 $ 3,497,235 Silver Peñasquito $ 74,578 $ 19,267 $ 14,020 $ 41,291 $ - $ 41,291 $ 55,310 $ 374,702 Antamina 5 76,328 15,322 41,267 19,739 - 19,739 61,007 668,810 Constancia 38,895 14,258 18,044 6,593 - 6,593 24,637 228,187 Other 4, 5 98,600 40,059 14,960 43,581 - 43,581 55,509 487,693 Total silver interests $ 288,401 $ 88,906 $ 88,291 $ 111,204 $ - $ 111,204 $ 196,463 $ 1,759,392 Palladium Stillwater $ 31,886 $ 5,656 $ 9,719 $ 16,511 $ - $ 16,511 $ 26,230 $ 249,969 Cobalt Voisey’s Bay 5 $ - $ - $ - $ - $ 165,912 $ (165,912) $ - $ 227,510 Total mineral stream interests $ 861,332 $ 258,559 $ 256,826 $ 345,947 $ 165,912 $ 180,035 $ 600,216 $ 5,734,106 Other General and administrative $ (54,507) $ (46,292) Finance costs (48,730) (44,733) Other 274 (2,191) Income tax 9,066 (5,380) Total other $ (93,897) $ (98,596) $ 543,901 Consolidated $ 86,138 $ 501,620 $ 6,278,007 1) See Note 11 for more information. 2) Comprised of the operating Coleman, Copper Cliff, Garson, Creighton and Totten gold interests as well as the non-operating 3) Where a gold interest represents less than 10% of the Company’s sales, gross margin or aggregate asset book value and is not evaluated on a regular basis by the Company’s CEO for the purpose of assessing performance, the gold interest has been summarized under Other gold interests. Other gold interests are comprised of the operating 777 and Minto gold interests and the non-operating 4) Where a silver interest represents less than 10% of the Company’s sales, gross margin or aggregate asset book value and is not evaluated on a regular basis by the Company’s CEO for the purpose of assessing performance, the silver interest has been summarized under Other silver interests. Other silver interests are comprised of the operating Los Filos, Zinkgruvan, Yauliyacu, Stratoni, Neves-Corvo, Aljustrel, Minto and 777 silver interests and the non-operating 5) As it relates to mine operator concentration risk: a. The counterparty obligations under the Salobo, Sudbury and Voisey’s Bay PMPAs are guaranteed by the parent company Vale. Total revenues relative to Vale during the year ended December 31, 2019 were 47% of the Company’s total revenue. b. The counterparty obligations under the Antamina PMPA and the Yauliyacu PMPA (which is included as part of Other silver interests) are guaranteed by the parent company Glencore plc (“Glencore”) and its subsidiary. Total revenues relative to Glencore during the year ended December 31, 2019 were 12% of the Company’s total revenue. c. The counterparty obligations under the Constancia PMPA and the 777 PMPA (which is included as part of Other gold and silver interests) are guaranteed by the parent company Hudbay Minerals Inc. (“Hudbay”). Total revenues relative to Hudbay during the year ended December 31, 2019 were 11% of the Company’s total revenue. Should any of these mine operators become unable or unwilling to fulfill their obligations under their agreements with the Company, there could be a material adverse impact on the Company including, but not limited to, the Company’s revenue, net income and cash flows from operations. Year Ended December 31, 2018 (in thousands) Sales Cost of Sales Depletion Net Earnings Cash Flow From Operations Total Assets Gold Salobo 5 $ 336,474 $ 106,347 $ 102,672 $ 127,455 $ 230,126 $ 2,706,060 Sudbury 1, 5 21,785 6,804 13,525 1,456 14,959 366,463 Constancia 5 15,259 4,818 4,504 5,937 10,441 117,547 San Dimas 26,943 13,177 12,234 1,532 13,766 208,195 Stillwater 6,777 1,215 2,925 2,637 5,562 236,432 Other 2, 5 33,955 10,367 10,459 13,129 22,162 21,359 Total gold interests $ 441,193 $ 142,728 $ 146,319 $ 152,146 $ 297,016 $ 3,656,056 Silver San Dimas 3 $ 40,594 $ 10,549 $ 3,575 $ 26,470 $ 30,045 $ - Peñasquito 5 77,691 20,501 14,528 42,662 57,190 388,722 Antamina 5 86,408 17,265 47,561 21,582 69,143 710,077 Constancia 5 34,082 12,863 15,572 5,647 21,219 246,231 Other 4 104,804 40,232 20,699 43,873 64,645 502,638 Total silver interests $ 343,579 $ 101,410 $ 101,935 $ 140,234 $ 242,242 $ 1,847,668 Palladium Stillwater $ 9,240 $ 1,656 $ 4,033 $ 3,551 $ 7,584 $ 259,693 Cobalt Voisey’s Bay 5 $ - $ - $ - $ - $ - $ 393,422 Total mineral stream interests $ 794,012 $ 245,794 $ 252,287 $ 295,931 $ 546,842 $ 6,156,839 Other General and administrative $ (51,650) $ (29,564) Finance costs (41,187) (40,363) Gain on disposal of San Dimas SPA 3 245,715 - Other (5,826) 1,458 Income tax (15,868) (960) Total other $ 131,184 $ (69,429) $ 313,207 Consolidated $ 427,115 $ 477,413 $ 6,470,046 1) Comprised of the operating Coleman, Copper Cliff, Garson, Creighton and Totten gold interests as well as the non-operating 2) Where a gold interest represents less than 10% of the Company’s sales, gross margin or aggregate asset book value and is not evaluated on a regular basis by the Company’s CEO for the purpose of assessing performance, the gold interest has been summarized under Other gold interests. Other gold interests are comprised of the operating Minto and 777 gold interests and the non-operating 3) On May 10, 2018, the Company terminated the San Dimas SPA and concurrently entered into the new San Dimas PMPA. 4) Where a silver interest represents less than 10% of the Company’s sales, gross margin or aggregate asset book value and is not evaluated on a regular basis by the Company’s CEO for the purpose of assessing performance, the silver interest has been summarized under Other silver interests. Other silver interests are comprised of the operating Los Filos, Zinkgruvan, Yauliyacu, Stratoni, Neves-Corvo, Minto, and 777 silver interests, the non-operating 5) As it relates to mine operator concentration risk: a. The counterparty obligations under the Salobo, Sudbury and Voisey’s Bay PMPAs are guaranteed by the parent company Vale. Total revenues relative to Vale during the year ended December 31, 2018 were 45% of the Company’s total revenue. b. The counterparty obligations under the Antamina PMPA and the Yauliyacu PMPA (which is included as part of Other silver interests) are guaranteed by the parent company Glencore plc (“Glencore”) and its subsidiary. Total revenues relative to Glencore during the year ended December 31, 2018 were 15% of the Company’s total revenue. c. The counterparty obligations under the Peñasquito PMPA and the Los Filos PMPA (which is included as part of Other silver interests) are guaranteed by Goldcorp. Total revenues relative to Goldcorp during the year ended December 31, 2018 were 10% of the Company’s total revenue. d. The counterparty obligations under the Constancia PMPA and the 777 PMPA (which is included as part of Other gold and silver interests) are guaranteed by the parent company Hudbay Minerals Inc. (“Hudbay”). Total revenues relative to Hudbay during the year ended December 31, 2018 were 10% of the Company’s total revenue. Should any of these mine operators become unable or unwilling to fulfill their obligations under their agreements with the Company, there could be a material adverse impact on the Company including, but not limited to, the Company’s revenue, net income and cash flows from operations. Geographical Areas The Company’s geographical information, which is based on the location of the mining operations to which the mineral stream interests relate, are summarized in the tables below: Carrying Amount at December 31, 2019 (in thousands) Sales Gold Interests Silver Interests Palladium Interests Cobalt Interests Total North America Canada $ 74,307 9% $ 357,212 $ 32,124 $ - $ 227,510 $ 616,846 11% United States 49,189 6% 229,994 566 249,969 - 480,529 8% Mexico 139,275 16% 194,365 376,020 - - 570,385 10% Europe Greece 9,339 1% - 1,990 - - 1,990 0% Portugal 28,012 3% - 21,355 - - 21,355 0% Sweden 25,250 3% - 35,059 - - 35,059 1% South America Argentina/Chile 1 - 0% - 264,403 - - 264,403 5% Brazil 365,448 42% 2,605,258 - - - 2,605,258 45% Peru 170,512 20% 110,406 1,027,875 - - 1,138,281 20% Consolidated $ 861,332 100% $ 3,497,235 $ 1,759,392 $ 249,969 $ 227,510 $ 5,734,106 100% 1) Includes the Pascua-Lama project, which straddles the border of Argentina and Chile. Carrying Amount at December 31, 2018 (in thousands) Sales Gold Interests Silver Interests Palladium Interests Cobalt Interests Total North America Canada $ 64,589 8% $ 387,823 $ 33,901 $ - $ 393,422 $ 815,146 13% United States 16,018 1% 236,432 551 259,693 - 496,676 8% Mexico 147,274 19% 208,194 390,079 - - 598,273 10% Europe Greece 8,020 1% - 5,884 - - 5,884 0% Portugal 20,484 3% - 22,420 - - 22,420 0% Sweden 24,188 3% - 37,371 - - 37,371 1% South America Argentina/Chile 1 4,444 1% - 264,401 - - 264,401 4% Brazil 336,474 42% 2,706,061 - - - 2,706,061 44% Peru 172,521 22% 117,546 1,093,061 - - 1,210,607 20% Consolidated $ 794,012 100% $ 3,656,056 $ 1,847,668 $ 259,693 $ 393,422 $ 6,156,839 100% 1) Includes the Pascua-Lama project, which straddles the border of Argentina and Chile.

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 31, 2019
Text block [abstract]
Subsequent Events	31. Subsequent Events Declaration of Dividend Under the Company’s dividend policy, the quarterly dividend per common share is targeted to equal approximately 30% of the average cash flow generated by operating activities in the previous four quarters divided by the Company’s then outstanding common shares, all rounded to the nearest cent. To minimize volatility in quarterly dividends, the Company has set a minimum quarterly dividend of $0.10 per common share for the duration of 2020. The declaration, timing, amount and payment of future dividends remain at the discretion of the Board of Directors. On March 11, 2020, the Board of Directors declared a dividend in the amount of $0.10 per common share, with this dividend being payable to shareholders of record on March 26, 2020 and is expected to be distributed on or about April 9, 2020. The Company has implemented a dividend reinvestment plan (“DRIP”) whereby shareholders can elect to have dividends reinvested directly into additional Wheaton common shares at a discount of 1% of the Average Market Price, as defined in the DRIP.

Significant Accounting Polici_2

Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2019
Text block [abstract]
IFRS 16 Leases	IFRS 16 – Leases: General Impact of Application of IFRS 16 - Leases On January 1, 2019, the Company adopted IFRS 16 – Leases (“IFRS16”), which supersedes IAS 17 – Leases (“IAS 17”). IFRS 16 removes the distinction between operating leases and finance leases and instead has all leases accounted for as a finance lease which requires the recognition of a right-of-use right-of-use The Company determined that it had two leases which are subject to the provisions of IFRS 16, specifically related to its offices in Vancouver, Canada and the Cayman Islands. As a result, at January 1, 2019, the Company recognized an additional $5 million of right-of-use The Company has applied the new standard on a modified retrospective basis with no restatement of the prior periods. A reconciliation of the lease commitment relative to these two leases as reported on the financial statements for the year ended December 31, 2018 and the lease liability which has been reflected on the balance sheet effective January 1, 2019 is as follows: (in thousands) Total lease commitment as disclosed at December 31, 2018 $ 3,785 Extension option reasonably certain to be exercised 1 1,530 Less: Discounting using the incremental borrowing rate 2 (636 ) Lease liability as at January 1, 2019 $ 4,679 Lease liability is comprised of: Current portion $ 637 Long-term portion 4,042 Lease liability as at January 1, 2019 $ 4,679 1) The Company’s office lease in the Cayman Islands contains two optional extension periods. Upon applying IFRS 16, the Company concluded it was reasonably certain to exercise the first extension period. The second extension period, which covers a term of 5 years, was not included in the calculation of the lease liability. 2) The future cash outflows were discounted using the Company’s estimated incremental borrowing rate ranging from 3.9764% to 4.3340%.
IFRIC 23 uncertainty over income tax treatments	IFRIC 23 – Uncertainty over Income Tax Treatments: On January 1, 2019, the Company adopted IFRIC 23 – Uncertainty over Income Tax Treatments. IFRIC 23 provides guidance on the accounting for current and deferred tax liabilities and assets in circumstances in which there is uncertainty over income tax treatments. The adoption of this guidance did not have a material impact on the Company’s Consolidated Statement of Earnings.
Principles of Consolidation	3.2. Principles of Consolidation The consolidated financial statements include the accounts of the Company and its 100% owned subsidiaries Wheaton Precious Metals International Ltd., Silver Wheaton Luxembourg S.a.r.l. and Wheaton Precious Metals (Cayman) Co. Subsidiaries are fully consolidated from the date on which the Company obtains a controlling interest. Control is defined as an investor’s power over an investee with exposure, or rights, to variable returns from the investee and the ability to affect the investor’s returns through its power over the investee. Subsidiaries are included in the consolidated financial results of the Company from the effective date of acquisition up to the effective date of disposition or loss of control. The financial statements of the subsidiaries are prepared for the same reporting period as the parent company, using consistent accounting policies. Balances, transactions, income and expenses between the Company and its subsidiaries are eliminated on consolidation.
Cash and Cash Equivalents	3.3. Cash and Cash Equivalents Cash and cash equivalents include cash and highly liquid money market investments including short-term deposits, treasury bills, commercial paper, bankers’ depository notes and bankers’ acceptances with terms to maturity of less than three months.
Revenue Recognition	3.4. Revenue Recognition Revenue relating to the sale of precious metals is recognized when control of the precious metal is transferred to the customer in an amount that reflects the consideration the Company expects to receive in exchange for those products. In determining whether the Company has satisfied a performance obligation, it considers the indicators of the transfer of control, which include, but are not limited to, whether: the Company has a present right to payment; the customer has legal title to the asset; the Company has transferred physical possession of the asset to the customer; and the customer has the significant risks and rewards of ownership of the asset. Under certain PMPAs, precious metal is acquired from the mine operator in the form of gold, silver or palladium credits, which is then sold through a network of third party brokers or dealers. Revenue from precious metal credit sales is recognized at the time of the sale of such credits, which is also the date that control of the precious metal is transferred to the customer. The Company will occasionally enter into forward contracts in relation to precious metal deliveries that it is highly confident will occur within a given quarter. No forward contracts were outstanding at December 31, 2019 or December 31, 2018. The sales price is fixed at the delivery date based on either the terms of these short-term forward sales contracts or the spot price of the precious metal. Under certain PMPAs, precious metal is acquired from the mine operator in concentrate form, which is then sold under the terms of the concentrate sales contracts to third-party smelters or traders. Where the Company acquires precious metals in concentrate form, final precious metal prices are set on a specified future quotational period (the “Quotational Period”) pursuant to the concentrate sales contracts with third-party smelters, typically one to three months after the shipment date, based on market prices for precious metals. The contracts, in general, provide for a provisional payment based upon provisional assays and quoted precious metal prices. Final settlement is based upon the average applicable price for the Quotational Period applied to the actual number of precious metal ounces recovered calculated using confirmed smelter weights and settlement assays. Revenues and the associated cost of sales are recorded on a gross basis under these contracts at the time title passes to the buyer, which is also the date that control of the precious metal is transferred to the customer. The Company has concluded that the adjustments relating to the final assay results for the quantity of concentrate sold and the retroactive pricing adjustment for the Quotational Period are not significant and do not constrain the recognition of revenue.
Financial Instruments	3.5. Financial Instruments Financial assets and financial liabilities are recognized when the Company becomes a party to the contractual provisions of the instrument. Financial assets and financial liabilities are initially measured at fair value. Transaction costs that are directly attributable to the acquisition or issue of financial assets and financial liabilities (other than financial assets and financial liabilities at fair value through net earnings) are added to or deducted from the fair value of the financial assets or financial liabilities, as appropriate, on initial recognition. Transaction costs directly attributable to the acquisition of financial assets or financial liabilities at fair value through net earnings are recognized immediately in net earnings.
Financial Assets	3.6. Financial Assets Financial assets are subsequently measured at either amortized cost or fair value, depending on the classification of the financial assets. Financial Assets at Fair Value Through Other Comprehensive Income (“FVTOCI”) The Company’s long-term investments in common shares held are for long-term strategic purposes and not for trading. Upon the adoption of IFRS 9, Financial Instruments (“IFRS 9”), the Company made an irrevocable election to designate these long-term investments in common shares held as FVTOCI as it believes that this provides a more meaningful presentation for long-term strategic investments, rather than reflecting changes in fair value in net earnings. Long-term investments in common shares held are initially measured at fair value. Subsequently, they are measured at fair value with gains and losses arising from changes in fair value recognized as a component of other comprehensive income (“OCI”) and accumulated in the long-term investment revaluation reserve. The cumulative gain or loss will not be reclassified to net earnings on disposal of these long-term investments but is reclassified to retained earnings. Dividends on these long-term investments in common shares held are recognized as a component of net earnings in the period they are received under the classification Other (Income) Expense. Financial Assets at Fair Value Through Net Earnings (“FVTNE”) Cash and cash equivalents are stated at FVTNE. Warrants held by the Company for long-term investment purposes are classified as FVTNE. These warrants are measured at fair value at the end of each reporting period, with any gains or losses arising on remeasurement recognized as a component of net earnings under the classification Other (Income) Expense. Convertible notes receivable (Note 15) are classified as FVTNE and are measured at fair value at the end of each reporting period by discounting the stream of future interest and principal payments at the rate of interest prevailing at the balance sheet date for instruments of similar term and risk (the market interest rate), and adding this value to the value of the convertibility feature which is estimated using a Black-Scholes model based on assumptions including risk free interest rate, expected dividend yield, expected volatility and expected remaining life of the respective convertible notes receivable. The resulting gains or losses (if any) arising on remeasurement is recognized as a component of net earnings under the classification Other (Income) Expense. As discussed in Note 3.4, the Company’s provisionally priced sales contain an embedded derivative that is reflected at fair value at the end of each reporting period. Fair value gains and losses related to the embedded derivative are included in revenue in the period they occur. Financial Assets at Amortized Cost The non-revolving non-interest non-revolving Foreign Exchange Gains and Losses The fair value of financial assets denominated in a foreign currency is determined in that foreign currency and translated at the spot rate at the end of each reporting period. The foreign exchange component forms part of its fair value gain or loss. Therefore, ● For financial assets that are classified as FVTNE, the foreign exchange component is recognized as a component of net earnings; ● For financial assets that are classified as FVTOCI, the foreign exchange component is recognized as a component of OCI; and ● For financial assets that are denominated in a foreign currency and are measured at amortized cost at the end of each reporting period, the foreign exchange gains and losses are determined based on the amortized cost of the instruments and are recognized as a component of net earnings. Derecognition of Financial Assets The Company derecognizes a financial asset only when the contractual rights to cash flows from the asset expire, or when it transfers the financial asset and substantially all the risks and rewards of ownership of the asset to another entity. If the Company neither transfers nor retains substantially all the risks and rewards of ownership and continues to control the transferred asset, the Company recognizes its retained interest in the asset and an associated liability for amounts it may have to pay. If the Company retains substantially all the risks and rewards of ownership of a transferred financial asset, the Company continues to recognize the financial asset and also recognizes a collateralized borrowing for the proceeds received. On derecognition of a financial asset that is classified as FVTOCI, the cumulative gain or loss (net of tax) previously accumulated in the long-term investment revaluation reserve is not reclassified to net earnings, but is reclassified to retained earnings.
Financial Liabilities and Equity Instruments	3.7. Financial Liabilities and Equity Instruments Debt and equity instruments issued by the Company are classified as either financial liabilities or as equity in accordance with the substance of the contractual arrangements and the definition of a financial liability and equity instrument. All financial liabilities are subsequently measured at amortized cost using the effective interest method or at FVTNE, depending on the classification of the instrument. Equity Instruments An equity instrument is a contract that evidences a residual interest in the assets of an entity after deducting all of its liabilities. Equity instruments issued by the Company are recognized at the proceeds received less direct issue costs (net of any current or deferred income tax recovery attributable to such costs). Share Purchase Warrants Issued Share purchase warrants issued with an exercise price denominated in the Company’s functional currency (US dollars) are considered equity instruments with the consideration received reflected within shareholders’ equity under the classification of share purchase warrants reserve. Upon exercise, the original consideration is reallocated from share purchase warrants reserve to issued share capital along with the associated exercise price. Bank Debt Bank debt is initially measured at fair value, net of transaction costs, and is subsequently measured at amortized cost using the effective interest method. The effective interest method is a method of calculating the amortized cost of a financial liability and of allocating interest expense over the relevant period. The effective interest rate is the rate that exactly discounts estimated future cash payments through the expected life of the financial liability, or (where appropriate) a shorter period, to the net carrying amount on initial recognition. Other Financial Liabilities Accounts payable and accrued liabilities are stated at amortized cost, which approximate fair values due to the short terms to maturity. Foreign Exchange Gains and Losses The fair value of financial liabilities denominated in a foreign currency is determined in that foreign currency and translated at the spot rate at the end of each reporting period. Therefore, ● For financial liabilities that are denominated in a foreign currency and are measured at amortized cost at the end of each reporting period, the foreign exchange gains and losses are determined based on the amortized cost of the instruments and are recognized as a component of net earnings; and ● For financial liabilities that are classified as FVTNE, the foreign exchange component forms part of the fair value gains or losses and is recognized as a component of net earnings. Derecognition of Financial Liabilities The Company derecognizes financial liabilities when the Company’s obligations are discharged, cancelled or they expire. The difference between the carrying amount of the financial liability derecognized and the consideration paid and payable, including any non-cash
Mineral Stream Interests	3.8. Mineral Stream Interests Agreements for which settlement is called for in gold, silver, palladium or cobalt, the amount of which is based on production at the mines, are stated at cost less accumulated depletion and accumulated impairment charges, if any. The cost of the asset is comprised of its purchase price, any closing costs directly attributable to acquiring the asset, and, for qualifying assets, borrowing costs. The purchase price is the aggregate cash amount paid and the fair value of any other non-cash Depletion The cost of these mineral stream interests is separately allocated to reserves, resources and exploration potential. The value allocated to reserves is classified as depletable and is depleted on a unit-of-production non-depletable Asset Impairment Management considers each PMPA to be a separate cash generating unit (“CGU”), which is the lowest level for which cash inflows are largely independent of those of other assets. At the end of each reporting period, the Company assesses each PMPA to determine whether any indication of impairment exists. If such an indication exists, the recoverable amount of the PMPA is estimated in order to determine the extent of the impairment (if any). The recoverable amount of each PMPA is the higher of fair value less cost of disposal (“FVLCD”) and value in use (“VIU”). In determining the recoverable amounts of each of the Company’s CGU’s, the Company uses the FVLCD as this will generally be greater than or equal to the VIU. To determine the FVLCD that could be received from each PMPA in an arm’s length transaction at the measurement date, the Company estimates a range of potential values using the net asset value (“NAV”) methodology and the net present value (“NPV”) methodology (as described below), and then selects a value within this range which is the most representative of the estimated recoverable amount of the stream. NAV is estimated by using an appropriate discount rate to calculate the present value of the expected future cash flows associated with each mineral category. The values are adjusted for each mineral category dependent on the likelihood of conversion from resources to reserves. A market multiple is applied to the NAV computed in order to assess the estimated fair value. Precious metal companies typically trade at a market capitalization that is based on a multiple of their underlying NAV, with this market multiple being generally understood to take account of a variety of additional value and risk factors such as the ability to find and produce more metal than what is currently included in the life of mine plan, the benefit of precious metal price optionality, the potential remaining mine life and adjustments for relative mine and country risk. Consequently, a market participant would generally apply a NAV multiple when estimating the fair value of a precious metal interest. NPV is estimated by using a nominal discount rate to calculate the present value of expected future cash flows. The expected future cash flows are management’s best estimates of expected future revenues and costs. Under each valuation methodology, expected future revenues reflect an estimate of future payable production for each mine at which the Company has a PMPA based on detailed life of mine plans received from each of the partners. Expected future revenues also reflect management’s estimated long-term metal prices. Estimated future cash costs are generally fixed based on the terms of each PMPA as disclosed in Note 29. If the carrying amount of the PMPA exceeds its recoverable amount, the PMPA is considered impaired and an impairment charge is reflected as a component of net earnings so as to reduce the carrying amount to its recoverable value. A previously recognized impairment charge is reversed only if there has been an indicator of a potential impairment reversal and the resulting assessment of the PMPA’s recoverable amount exceeds its carrying value. If this is the case, the carrying amount of the PMPA is increased to its recoverable amount. The increased amount cannot exceed the carrying amount that would have been determined, net of depletion, had no impairment charge been recognized for the PMPA in prior years. Such reversal is reflected as a component of net earnings.
Investments in Associates	3.9. Investments in Associates Investments over which the Company exercises significant influence and that the Company does not control or jointly control are associates. Investments in associates are accounted for using the equity method, except when classified as held for sale. The equity method involves recording the initial investment at cost and subsequently adjusting the carrying value of the investment for the Company’s proportionate share of the profit or loss, other comprehensive income or loss and any other changes in the associate’s net assets such as dividends. The Company’s proportionate share of the associate’s profit or loss and other comprehensive income or loss is based on its most recent publicly available financial statements. Adjustments are made to align any inconsistencies between the Company’s accounting policies and the associate’s policies before applying the equity method. Adjustments are also made to account for depreciable assets based on their fair values at the acquisition date of the investment and for any impairment losses recognized by the associate. If the Company’s share of the associate’s losses equals or exceeds the Company’s investment in the associate, recognition of further losses is discontinued. After the Company’s interest is reduced to zero, additional losses will be provided for and a liability recognized only to the extent that the Company has incurred legal or constructive obligations to provide additional funding or make payments on behalf of the associate. If the associate subsequently reports profits, the Company resumes recognizing the Company’s share of those profits only after the Company’s share of the profits equals the Company’s share of losses not recognized. At each balance sheet date, management considers whether there is objective evidence of impairment in associates. If there is such evidence, management determines the amount of impairment to record, if any, in relation to the associate.
Borrowing and Debt Issue Costs	3.10. Borrowing and Debt Issue Costs Borrowing costs allocable to qualifying assets, which are assets that necessarily take a substantial period of preparation for their intended use, are capitalized and included in the carrying amounts of the related assets until such time as the assets are substantially ready for their intended use. Borrowing costs that do not relate to the acquisition or construction of qualifying assets are reflected as a component of net earnings under the classification Finance Costs, as incurred. Debt issue costs on non-revolving
Stock Based Payment Transactions	3.11. Stock Based Payment Transactions The Company recognizes a stock based compensation expense for all share purchase options and restricted share units (“RSUs”) awarded to employees, officers and directors based on the fair values of the share purchase options and RSUs at the date of grant. The fair values of share purchase options and RSUs at the date of grant are expensed over the vesting periods of the share purchase options and RSUs, respectively, with a corresponding increase to equity. The fair value of share purchase options is determined using the Black-Scholes option pricing model with market related inputs as of the date of grant. Share purchase options with graded vesting schedules are accounted for as separate grants with different vesting periods and fair values. The fair value of RSUs is the market value of the underlying shares at the date of grant. At the end of each reporting period, the Company re-assesses The Company recognizes a stock based compensation expense for performance share units (“PSUs”) which are awarded to eligible employees and are settled in cash. Compensation expense for the PSUs is recorded on a straight-line basis over the three year vesting period. This estimated expense is reflected as a component of net earnings over the vesting period of the PSUs with the related obligation recorded as a liability on the balance sheet. The amount of compensation expense is adjusted at the end of each reporting period to reflect (i) the fair market value of common shares; (ii) the number of PSUs anticipated to vest; and (iii) the anticipated performance factor.
Income Taxes	3.12. Income Taxes Income tax expense comprises current and deferred income tax. Current and deferred income taxes are recognized as a component of net earnings except to the extent that it relates to items recognized directly in equity or as a component of OCI. Current income tax is the expected tax payable on the taxable income for the year, using tax rates enacted or substantively enacted at the end of the reporting period, and any adjustment to tax payable in respect of previous years. Deferred income tax is recognized using the liability method on temporary differences arising between the tax bases of assets and liabilities and their carrying amounts in the consolidated financial statements. Deferred income tax assets and liabilities are measured using tax rates and laws that have been enacted or substantively enacted at the end of the reporting period and which are expected to apply when the related deferred income tax assets are realized or the deferred income tax liabilities are settled. Deferred income tax liabilities are generally recognized for all taxable temporary differences. Deferred income tax assets are generally recognized for all deductible temporary differences and the carry forward of unused tax losses and tax credits to the extent that it is probable that sufficient future taxable income, including income arising from reversing taxable temporary differences and tax planning opportunities, will be available against which those deductible temporary differences and the carry forward of unused tax losses and tax credits can be utilized. Deferred income tax liabilities are recognized for taxable temporary differences arising on investments in subsidiaries except where the reversal of the temporary difference can be controlled and it is probable that the difference will not reverse in the foreseeable future. Deferred income tax assets arising from deductible temporary differences associated with such investments are only recognized to the extent that it is probable that there will be sufficient taxable income against which to utilize the benefits of the temporary differences and they are expected to reverse in the foreseeable future. The carrying amount of deferred income tax assets are reviewed at the end of each reporting period and reduced to the extent that it is no longer probable that sufficient taxable income, including income arising from reversing taxable temporary differences and tax planning opportunities, will be available to allow all or part of the deferred income tax assets to be recovered. Deferred income tax assets and liabilities are not recognized for temporary differences arising from the initial recognition (other than in a business combination) of assets and liabilities in a transaction which does not affect either the accounting income or the taxable income. In addition, deferred income tax liabilities are not recognized if the temporary difference arises from the initial recognition of goodwill.
Earnings Per Share	3.13. Earnings Per Share Earnings per share calculations are based on the weighted average number of common shares and common share equivalents issued and outstanding during the year. Diluted earnings per share is calculated using the treasury method which requires the calculation of diluted earnings per share by assuming that outstanding share purchase options and warrants with an exercise price that exceeds the average market price of the common shares for the period are exercised, and the proceeds are used to repurchase shares of the Company at the average market price of the common shares for the period.
Foreign Currency Translation	3.14. Foreign Currency Translation The functional currency is the currency of the primary economic environment in which an entity operates. The consolidated financial statements are presented in US dollars, which is the functional currency of the Company and its subsidiaries. Foreign currency monetary assets and liabilities are translated into US dollars at the exchange rates prevailing at the balance sheet date. Non-monetary
Leasing	3.15. Leasing The Company as the Lessee At inception of a contract, the Company assesses whether the contract is, or contains, a lease. A contract is, or contains, a lease if the contract conveys the right to use an identified asset for a period of time in exchange for consideration. The Company recognizes a right-of-use The lease liability is initially measured at the present value of the lease payments that are not paid at the commencement date discounted by using the rate implicit in the lease. If this rate cannot be readily determined, the Company uses its incremental borrowing rate. The lease liability is subsequently measured by increasing the carrying amount to reflect interest on the lease liability (using the effective interest method) and by reducing the carrying amount to reflect the lease payments made. The Company re-measures right-of-use re-measured The right-of-use
Property, plant and equipment	3.16. Property, plant and equipment Property, plant and equipment are measured at cost less accumulated depreciation. The cost includes the original purchase price of the asset and the costs attributable to bringing the asset to its working condition for its intended use. Depreciation is based on cost and is calculated on a straight-line basis over the estimated economic life of the asset. The right of use asset discussed in Note 3.15 and the leasehold improvements are depreciated over the life of the lease term. Other assets, which include computer software, computer equipment, office furniture and office equipment, are depreciated over their estimated economic life, which ranges from 3 to 10 years.
Provisions	3.17. Provisions Provisions are recognized when the Company has a present obligation (legal or constructive) as a result of a past event, it is probable that the Company will be required to settle the obligation, and a reliable estimate can be made of the amount required to settle the obligation. The amount recognized as a provision is the best estimate of the consideration required to settle the present obligation at the end of the reporting period, taking into account the risks and uncertainties surrounding the obligation. Where a provision is measured using the cash flows estimated to settle the present obligation, its carrying amount is the present value of those cash flows. When some or all of the economic benefits required to settle a provision are expected to be recovered from a third party, a receivable is recognized as an asset if it is virtually certain that reimbursement will be received and the amount of the receivable can be measured reliably.
Post-Employment Benefit Costs	3.18. Post-Employment Benefit Costs The Company provides a Supplemental Employee Retirement Plan (“SERP) to all qualified employees. The SERP is an unregistered and unfunded defined contribution plan under which the Company makes a fixed notional contribution to an account maintained by the Company. Any benefits under the SERP have a vesting period of five years from the first date of employment. The notional contributions are recognized as employee benefit expense in earnings in the periods during which services are rendered by employees.
Future Changes in Accounting Policies	3.19. Future Changes to Accounting Policies The IASB has issued the following new or amended standards: Standards required to be applied for periods beginning on or after January 1, 2020: ● Amendment to IFRS 3 - Business Combinations - The amendments to IFRS 3 clarify the definition of a business and includes an optional concentration test to determine whether an acquired set of activities and assets is a business. The amendments are effective for business combinations and asset acquisitions occurring on or after January 1, 2020. The Company will apply these amendments to future acquisition transactions

Significant Accounting Polici_3

Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2019
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Schedule lease liability	A reconciliation of the lease commitment relative to these two leases as reported on the financial statements for the year ended December 31, 2018 and the lease liability which has been reflected on the balance sheet effective January 1, 2019 is as follows: (in thousands) Total lease commitment as disclosed at December 31, 2018 $ 3,785 Extension option reasonably certain to be exercised 1 1,530 Less: Discounting using the incremental borrowing rate 2 (636 ) Lease liability as at January 1, 2019 $ 4,679 Lease liability is comprised of: Current portion $ 637 Long-term portion 4,042 Lease liability as at January 1, 2019 $ 4,679 1) The Company’s office lease in the Cayman Islands contains two optional extension periods. Upon applying IFRS 16, the Company concluded it was reasonably certain to exercise the first extension period. The second extension period, which covers a term of 5 years, was not included in the calculation of the lease liability. 2) The future cash outflows were discounted using the Company’s estimated incremental borrowing rate ranging from 3.9764% to 4.3340%.

Financial Instruments (Tables)

Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2019
Text block [abstract]
Classification of Financial Assets and Liabilities	The following table summarizes the classification of the Company’s financial assets and liabilities: Note December 31 December 31 (in thousands) 2019 2018 Financial assets Financial assets mandatorily measured at FVTNE Cash and cash equivalents $ 103,986 $ 75,767 Trade receivables from provisional concentrate sales, net of fair value adjustment 6, 9 4,350 1,332 Convertible notes receivable 15 21,856 12,899 Investments in equity instruments designated as at FVTOCI Long-term investments - common shares held 16 309,757 164,753 Financial assets measured at amortized cost Non-revolving 25 431 - Other accounts receivable 9 2,788 854 Class action settlement recoverable 25, 29 41,500 - Total financial assets $ 484,668 $ 255,605 Financial liabilities Financial liabilities at amortized cost Accounts payable and accrued liabilities 11,794 19,883 Bank debt 18 874,500 1,264,000 Pension liability 28 810 - Class action settlement 29 41,500 - Total financial liabilities $ 928,604 $ 1,283,883
Maximum Exposure to Credit Risk Related to Financial Assets	The Company’s maximum exposure to credit risk related to its financial assets is as follows: December 31 December 31 (in thousands) Note 2019 2018 Cash and cash equivalents $ 103,986 $ 75,767 Trade receivables from provisional concentrate sales, net of fair value adjustment 9 4,350 1,332 Other accounts receivables 9 2,788 854 Non-revolving 25 431 - Convertible notes receivable 15 21,856 12,899 Class action settlement recoverable 25, 29 41,500 - Maximum exposure to credit risk related to financial assets $ 174,911 $ 90,852
Timing Associated with Remaining Contractual Payments Relating to Financial Liabilities	The table includes both interest and principal cash flows. To the extent that applicable interest rates are floating in nature, the interest charges are estimated based on market-based forward interest rate curves at the end of the reporting period. As at December 31, 2019 (in thousands) 2020 2021 - 2023 2024 - 2025 After 2025 Total Non-derivative Bank debt ¹ $ - $ - $ 874,500 $ - $ 874,500 Interest on bank debt ² 25,363 68,061 5,877 - 99,301 Accounts payable and accrued liabilities 11,794 - - - 11,794 Performance share units 3 10,668 6,895 1,506 - 19,069 Pension liability 4 810 - - - 810 Lease liability 724 2,413 1,115 - 4,252 Class action settlement 5 41,500 - - - 41,500 Total $ 90,859 $ 77,369 $ 882,998 $ - $ 1,051,226 1) Assumes the principal balance outstanding at December 31, 2019 does not change until the debt maturity date. On February 27, 2020, the term of the revolving credit facility was extended by an additional year, with the facility now maturing on February 27, 2025. 2) As the applicable interest rates are floating in nature, the interest charges are estimated based on market-based forward interest rate curves at the end of the reporting period combined with the assumption that the principal balance outstanding at December 31, 2019 does not change until the debt maturity date. 3) Assumes a weighted average performance factor of 186% (see Note 20.1). 4) As described in Note 28, any benefits under the SERP will be paid out to the employee over a 10-year period, or at the employee’s election, a shorter period upon the employee’s retirement from the Company. 5) As more fully described in Note 29, the class action settlement will be fully funded by the Company’s insurance carriers and the other Defendants. The Company will not be required to pay any portion of the settlement. The recoverable amount has been reflected as a component of Other current assets (Note 25).
Summary of Carrying Amounts of Canadian Dollar Denominated Monetary Assets and Monetary Liabilities	The carrying amounts of the Company’s Canadian dollar denominated monetary assets and monetary liabilities at the end of the reporting period are as follows: December 31 December 31 (in thousands) 2019 2018 Monetary assets Cash and cash equivalents $ 4,148 $ 731 Accounts receivable 2,519 637 Long-term investments - common shares held 309,757 161,421 Convertible note receivable 11,837 12,899 Non-revolving 431 - Other long-term assets 3,450 1,105 Total Canadian dollar denominated monetary assets $ 332,142 $ 176,793 Monetary liabilities Accounts payable and accrued liabilities $ 6,059 $ 16,128 Current taxes payable - 3,361 Performance share units 15,423 8,808 Lease liability 2,748 - Pension liability 810 - Total Canadian dollar denominated monetary liabilities $ 25,040 $ 28,297
Summary of Sensitivity to 10% Increase or Decrease in Canadian Dollar	The following tables detail the Company’s sensitivity to a 10% increase or decrease in the Canadian dollar relative to the United States dollar, representing the sensitivity used when reporting foreign currency risk internally to key management personnel and represents management’s assessment of the reasonably possible change in exchange rates. As at December 31, 2019 Change in Canadian Dollar (in thousands) 10% Increase 10% Decrease Increase (decrease) in net earnings $ (265 ) $ 265 Increase (decrease) in other comprehensive income 30,976 (30,976 ) Increase (decrease) in total comprehensive income $ 30,711 $ (30,711 ) As at December 31, 2018 Change in Canadian Dollar (in thousands) 10% Increase 10% Decrease Increase (decrease) in net earnings $ (1,292 ) $ 1,292 Increase (decrease) in other comprehensive income 16,142 (16,142) Increase (decrease) in total comprehensive income $ 14,850 $ (14,850)
Summary of Financial Assets and Liabilities Measured at Fair Value by Level within Fair Value Hierarchy	The following table sets forth the Company’s financial assets and liabilities measured at fair value by level within the fair value hierarchy. As required by IFRS 13, assets and liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement. December 31, 2019 (in thousands) Note Total Level 1 Level 2 Level 3 Cash and cash equivalents $ 103,986 $ 103,986 $ - $ - Trade receivables from provisional concentrate sales, net of fair value adjustment 9 4,350 - 4,350 - Long-term investments - common shares held 16 309,757 309,757 - - Convertible notes receivable 15 21,856 - - 21,856 $ 439,949 $ 413,743 $ 4,350 $ 21,856 December 31, 2018 (in thousands) Total Level 1 Level 2 Level 3 Cash and cash equivalents $ 75,767 $ 75,767 $ - $ - Trade receivables from provisional concentrate sales, net of fair value adjustment 9 1,332 - 1,332 - Long-term investments - common shares held 16 164,753 164,753 - - Convertible note receivable 15 12,899 - - 12,899 $ 254,751 $ 240,520 $ 1,332 $ 12,899
Summary of Sensitivity Analysis of Fair Value Measurement to Changes in Unobservable Inputs, Assets	Holding all other variables constant, a fluctuation in interest rates of 1% and a fluctuation in the implied volatility used of 5% would have impacted the valuation as below: As at December 31, 2019 Change in interest rate Change in volatility (in thousands) Increase Decrease Increase Decrease Kutcho Convertible Note $ (515 ) $ 542 $ 72 $ (41 ) Gold X Convertible Note (262 ) 270 191 (172 )

Revenue (Tables)

Revenue (Tables)	12 Months Ended
	Dec. 31, 2019
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Summary of Revenue	Years Ended December 31 (in thousands) 2019 2018 Sales Gold Gold credit sales $ 535,766 62 % $ 431,618 54% Concentrate sales 5,279 1 % 9,575 1% $ 541,045 63 % $ 441,193 55% Silver Silver credit sales $ 225,316 26 % $ 290,152 37% Concentrate sales 63,085 7 % 53,427 7% $ 288,401 33 % $ 343,579 44% Palladium Palladium credit sales $ 31,886 4 % $ 9,240 1% Total sales revenue $ 861,332 100 % $ 794,012 100%

General and Administrative (Tab

General and Administrative (Tables)	12 Months Ended
	Dec. 31, 2019
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Summary of General and Administrative Expense	Years Ended December 31 (in thousands) Note 2019 2018 Salaries and benefits Salaries and benefits, excluding PSUs $ 13,840 $ 14,397 PSUs 1 21.1 17,174 9,517 Total salaries and benefits $ 31,014 $ 23,914 Depreciation 1,903 1,057 Donations 2,946 2,610 Professional fees 2,496 8,559 Other 10,457 10,078 General and administrative before equity settled stock based compensation $ 48,816 $ 46,218 Equity settled stock based compensation 2 Stock options 20.2 $ 2,474 $ 2,401 RSUs 20.3 3,217 3,031 Total equity settled stock based compensation $ 5,691 $ 5,432 Total general and administrative $ 54,507 $ 51,650 1) The PSU accrual related to the anticipated fair value of the PSUs issued uses a weighted average performance factor of 186% during the year ended December 31, 2019 as compared to 141% during the comparable period of 2018. 2) Equity settled stock based compensation is a non-cash

Other (Income) Expense (Tables)

Other (Income) Expense (Tables)	12 Months Ended
	Dec. 31, 2019
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Summary of Other (Income) Expense	Years Ended December 31 (in thousands) Note 2019 2018 Interest income $ (816 ) $ (750 ) Dividends received from equity investments designated as FVTOCI ¹ relating to investments held at the end of the reporting period 16 - (78 ) Dividends received from equity investments designated as FVTOCI ¹ relating to investments disposed of during the period 16 (59 ) - Guarantee fees - Primero Revolving Credit Facility - (858 ) Fees for contract amendments and reconciliations - (248 ) Share of losses of associate 14 164 432 Impairment loss - investment in associate 14 1,649 - Foreign exchange loss (gain) 1,028 (144 ) Gain on disposal of mineral royalty interest 13 (2,929 ) - Interest and penalties related to CRA Settlement 2 24 (225 ) 4,317 Net (gain) loss arising on financial assets mandatorily measured at FVTPL ³ (Gain) loss on fair value adjustment of share purchase warrants held 16 16 124 (Gain) loss on fair value adjustment of convertible notes receivable 15 1,043 2,878 Other (145 ) 153 Total other (income) expense $ (274 ) $ 5,826 1) FVTOCI refers to Fair Value Through Other Comprehensive Income. 2) Please see Note 24 for more information. 3) FVTPL refers to Fair Value Through Profit or Loss.

Accounts Receivable (Tables)

Accounts Receivable (Tables)	12 Months Ended
	Dec. 31, 2019
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Summary of Accounts Receivable	December 31 December 31 (in thousands) Note 2019 2018 Trade receivables from provisional concentrate sales, net of fair value adjustment 6 $ 4,350 $ 1,332 Other accounts receivable 2,788 854 Total accounts receivable $ 7,138 $ 2,186

Mineral Stream Interests (Table

Mineral Stream Interests (Tables)	12 Months Ended
	Dec. 31, 2019
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Schedule of Mineral Stream Interests	Year Ended December 31, 2019 Cost Accumulated Depletion & Impairment 1 Carrying Amount Dec 31, 2019 (in thousands) Balance Jan 1, 2019 Additions (Reductions) Balance Dec 31, 2019 Balance Jan 1, 2019 Depletion Impairment Balance Dec 31, 2019 Gold interests Salobo $ 3,059,876 $ - $ 3,059,876 $ (353,816 ) $ (100,803 ) $ - $ (454,619 ) $ 2,605,257 Sudbury 2 623,864 - 623,864 (257,401 ) (22,420 ) - (279,821 ) 344,043 Constancia 136,058 - 136,058 (18,511 ) (7,141 ) - (25,652 ) 110,406 San Dimas 220,429 - 220,429 (12,234 ) (13,828 ) - (26,062 ) 194,367 Stillwater 3 239,357 (5 ) 239,352 (2,925 ) (6,433 ) - (9,358 ) 229,994 Other 4 402,232 - 402,232 (380,873 ) (8,191 ) - (389,064 ) 13,168 $ 4,681,816 $ (5 ) $ 4,681,811 $ (1,025,760 ) $ (158,816 ) $ - $ (1,184,576 ) $ 3,497,235 Silver interests Peñasquito $ 524,626 - 524,626 $ (135,904 ) $ (14,020 ) $ - $ (149,924 ) $ 374,702 Antamina 900,343 - 900,343 (190,266 ) (41,267 ) - (231,533 ) 668,810 Constancia 302,948 - 302,948 (56,717 ) (18,044 ) - (74,761 ) 228,187 Other 5 1,283,039 15 1,283,054 (780,401 ) (14,960 ) - (795,361 ) 487,693 $ 3,010,956 $ 15 $ 3,010,971 $ (1,163,288 ) $ (88,291 ) $ - $ (1,251,579 ) $ 1,759,392 Palladium interests Stillwater 3 $ 263,726 $ (5 ) $ 263,721 $ (4,033 ) $ (9,719 ) $ - $ (13,752 ) $ 249,969 Cobalt interests Voisey’s Bay $ 393,422 $ - $ 393,422 $ - $ - $ (165,912 ) $ (165,912 ) $ 227,510 $ 8,349,920 $ 5 $ 8,349,925 $ (2,193,081 ) $ (256,826 ) $ (165,912 ) $ (2,615,819 ) $ 5,734,106 1) Includes cumulative impairment charges to December 31, 2019 as follows: Keno Hill silver interest - $11 million; Pascua-Lama silver interest - $338 million; 777 silver interest - $64 million; 777 gold interest - $151 million; Sudbury gold interest - $120 million; and Voisey’s Bay cobalt interest - $166 million. 2) Comprised of the Coleman, Copper Cliff, Garson, Stobie, Creighton, Totten and Victor gold interests. 3) Comprised of the Stillwater and East Boulder gold and palladium interests. 4) Comprised of the Minto, Rosemont and 777 gold interests. 5) Comprised of the Los Filos, Zinkgruvan, Yauliyacu, Stratoni, Keno Hill, Neves-Corvo, Minto, Aljustrel, Loma de La Plata, Pascua-Lama, Rosemont and 777 silver interests. Year Ended December 31, 2018 Cost Accumulated Depletion & Impairment 1 Carrying Amount Dec 31, 2018 (in thousands) Balance Jan 1, 2018 Additions Disposal Balance Dec 31, 2018 Balance Jan 1, 2018 Depletion Disposal Balance Dec 31, 2018 Gold interests Salobo $ 3,059,876 $ - $ - $ 3,059,876 $ (251,144 ) $ (102,672 ) $ - $ (353,816 ) $ 2,706,060 Sudbury 2 623,864 - - 623,864 (243,876 ) (13,525 ) - (257,401 ) 366,463 Constancia 136,058 - - 136,058 (14,007 ) (4,504 ) - (18,511 ) 117,547 San Dimas - 220,429 - 220,429 - (12,234 ) - (12,234 ) 208,195 Stillwater 3 - 239,357 - 239,357 - (2,925 ) - (2,925 ) 236,432 Other 4 402,232 - - 402,232 (370,414 ) (10,459 ) - (380,873 ) 21,359 $ 4,222,030 $ 459,786 $ - $ 4,681,816 $ (879,441 ) $ (146,319 ) $ - $ (1,025,760 ) $ 3,656,056 Silver interests San Dimas $ 190,331 $ - $ (190,331 ) $ - $ (55,469 ) $ (3,575 ) $ 59,044 $ - $ - Peñasquito 524,626 - - 524,626 (121,376 ) (14,528 ) - (135,904 ) 388,722 Antamina 900,343 - - 900,343 (142,705 ) (47,561 ) - (190,266 ) 710,077 Constancia 302,948 - - 302,948 (41,145 ) (15,572 ) - (56,717 ) 246,231 Other 5 1,282,837 202 - 1,283,039 (759,702 ) (20,699 ) - (780,401 ) 502,638 $ 3,201,085 $ 202 $ (190,331 ) $ 3,010,956 $ (1,120,397 ) $ (101,935 ) $ 59,044 $ (1,163,288 ) $ 1,847,668 Palladium interests Stillwater 3 $ - $ 263,726 - $ 263,726 $ - $ (4,033 ) - $ (4,033 ) $ 259,693 Cobalt interests Voisey’s Bay $ - $ 393,422 - $ 393,422 $ - $ - - $ - $ 393,422 $ 7,423,115 $ 1,117,136 $ (190,331 ) $ 8,349,920 $ (1,999,838 ) $ (252,287 ) $ 59,044 $ (2,193,081 ) $ 6,156,839 1) Includes cumulative impairment charges to December 31, 2018 as follows: Keno Hill silver interest - $11 million; Pascua-Lama silver interest - $338 million; 777 silver interest - $64 million; 777 gold interest - $151 million; and Sudbury gold interest - $120 million. 2) Comprised of the Coleman, Copper Cliff, Garson, Stobie, Creighton, Totten and Victor gold interests. 3) Comprised of the Stillwater and East Boulder gold and palladium interests. 4) Comprised of the Minto, Rosemont and 777 gold interests. 5) Comprised of the currently owned Los Filos, Zinkgruvan, Yauliyacu, Stratoni, Keno Hill, Neves-Corvo, Minto, Aljustrel, Loma de La Plata, Pascua-Lama, Rosemont and 777 silver interests in addition to the Lagunas Norte, Pierina and Veladero silver interests, all of which expired on March 31, 2018.
Classification of Mining Interest Between Depletable and Non-depletable	December 31, 2019 December 31, 2018 (in thousands) Depletable Non- Depletable Total Depletable Non- Depletable Total Gold interests Salobo $ 2,078,666 $ 526,591 $ 2,605,257 $ 2,171,292 $ 534,768 $ 2,706,060 Sudbury 1 290,841 53,202 344,043 308,041 58,422 366,463 Constancia 101,263 9,143 110,406 108,403 9,144 117,547 San Dimas 87,593 106,774 194,367 101,421 106,774 208,195 Stillwater 2 203,163 26,831 229,994 209,569 26,863 236,432 Other 3 13,168 - 13,168 21,359 - 21,359 $ 2,774,694 $ 722,541 $ 3,497,235 $ 2,920,085 $ 735,971 $ 3,656,056 Silver interests Peñasquito $ 287,493 $ 87,209 $ 374,702 $ 284,194 $ 104,528 $ 388,722 Antamina 322,148 346,662 668,810 353,679 356,398 710,077 Constancia 212,173 16,014 228,187 230,983 15,248 246,231 Other 4 83,687 404,006 487,693 87,386 415,252 502,638 $ 905,501 $ 853,891 $ 1,759,392 $ 956,242 $ 891,426 $ 1,847,668 Palladium interests Stillwater 3 $ 238,485 $ 11,484 $ 249,969 $ 248,299 $ 11,394 $ 259,693 Cobalt interests Voisey’s Bay $ - $ 227,510 $ 227,510 $ - $ 393,422 $ 393,422 $ 3,918,680 $ 1,815,426 $ 5,734,106 $ 4,124,626 $ 2,032,213 $ 6,156,839 1) Comprised of the Coleman, Copper Cliff, Garson, Stobie, Creighton, Totten and Victor gold interests. 2) Comprised of the Stillwater and East Boulder gold and palladium interests. 3) Comprised of the Minto, Rosemont and 777 gold interests. 4) Comprised of the Los Filos, Zinkgruvan, Yauliyacu, Stratoni, Keno Hill, Neves-Corvo, Minto, Aljustrel, Loma de La Plata, Pascua-Lama, Rosemont and 777 silver interests.
Disclosure of Gain on Disposal of Mineral Stream Interest	(in thousands) Cash received $ 220,000 Fair value of First Majestic shares received 151,000 Fee from Goldcorp in exchange for release from the guarantee of deliveries relative to San Dimas 10,000 Total net proceeds from the disposal of the San Dimas SPA $ 381,000 Less: carrying value plus closing costs (135,285 ) Gain on disposal of the San Dimas SPA $ 245,715

Impairment of Mineral Stream _2

Impairment of Mineral Stream Interests (Tables)	12 Months Ended
	Dec. 31, 2019
Text block [abstract]
Schedule of Impairment of Mineral Stream Interests	Years Ended December 31 (in thousands) 2019 2018 Cobalt Interests Voisey’s Bay $ 165,912 $ - Total impairment charges $ 165,912 $ -

Early Deposit Mineral Stream _2

Early Deposit Mineral Stream Interests (Tables)	12 Months Ended
	Dec. 31, 2019
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Summary of Early Deposit Mineral Stream Interests	The following table summarizes the early deposit mineral stream interests currently owned by the Company: Attributable Production to be Purchased Early Deposit Mineral Stream Interests Mine Owner Location of Mine Upfront Consideration 1 Upfront Consideration to be Paid 1, 2 Total Upfront Consideration¹ Gold Silver Term of Agreement Toroparu Gold X Guyana $ 15,500 $ 138,000 $ 153,500 10% 50% Life of Mine Cotabambas Panoro Peru 8,500 131,500 140,000 25% ³ 100% ³ Life of Mine Kutcho Kutcho Canada 7,000 58,000 65,000 100% 4 100% 4 Life of Mine $ 31,000 $ 327,500 $ 358,500 1) Expressed in thousands of United States dollars; excludes closing costs and capitalized interest, where applicable. 2) Please refer to Note 29 for details of when the remaining upfront consideration to be paid becomes due. 3) Once 90 million silver equivalent ounces attributable to Wheaton have been produced, the attributable production to be purchased will decrease to 16.67% of gold production and 66.67% of silver production for the life of mine. 4) Once 51,000 ounces of gold and 5.6 million ounces of silver have been delivered to Wheaton, the stream will decrease to 66.67% of gold and silver production for the life of mine.

Investment in Associate (Tables

Investment in Associate (Tables)	12 Months Ended
	Dec. 31, 2019
Text block [abstract]
Disclosure of Investment in Associate	A continuity schedule of the Kutcho Investment in Associate from January 1, 2018 to December 31, 2019 is presented below: (in thousands) Investment in At January 1, 2018 $ 2,994 Share of losses (432) At December 31, 2018 $ 2,562 Amount invested 133 Share of losses (164) Impairment (1,649) At December 31, 2019 $ 882

Convertible Notes Receivable (T

Convertible Notes Receivable (Tables)	12 Months Ended
	Dec. 31, 2019
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Schedule of the Company's Convertible Note Receivable	A continuity schedule of these convertible notes from January 1, 2018 to December 31, 2019 is presented below: (in thousands) Kutcho Convertible Note Gold X Convertible Note Total At January 1, 2018 $ 15,777 $ - $ 15,777 Fair value gain (loss) reflected in net earnings (2,878) - (2,878) At December 31, 2018 $ 12,899 $ - $ 12,899 Amount advanced - 10,000 10,000 Fair value gain (loss) reflected in net earnings (1,062) 19 (1,043) At December 31, 2019 $ 11,837 $ 10,019 $ 21,856

Long-Term Equity Investments (T

Long-Term Equity Investments (Tables)	12 Months Ended
	Dec. 31, 2019
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Summary of Long-Term Equity Investments	Common Shares Held December 31, 2019 (in thousands, except shares owned) Shares Owned Percentage of Outstanding Fair Value Fair Value Realized Bear Creek 13,264,305 12.84% $ 27,983 $ 17,871 $ - Sabina 11,700,000 3.95% 17,296 6,747 - First Majestic 20,239,590 9.73% 248,137 130,346 521 Other 16,341 6,972 (7,803) Total $ 309,757 $ 161,936 $ (7,282) December 31, 2018 (in thousands, except shares owned) Shares Owned Percentage of Fair Value Fair Value Realized Bear Creek 13,264,305 13% $ 10,112 $ (11,247 ) $ - Sabina 11,700,000 4% 10,549 (10,622 ) - Arizona Mining n.a. n.a. - 20,153 34,061 First Majestic 20,914,590 11% 123,187 (27,813 ) - Other 20,905 (10,456 ) - Total $ 164,753 $ (39,985 ) $ 34,061

Property, Plant and Equipment (

Property, Plant and Equipment (Tables)	12 Months Ended
	Dec. 31, 2019
Text block [abstract]
Summary of Property, Plant and Equipment	December 31, 2019 (in thousands) Leasehold Right of Use Other Total Cost Balance - January 1, 2019 $ 4,378 $ - $ 3,318 $ 7,696 Additions upon adoption of IFRS 16 - 4,679 - 4,679 Additions 9 59 547 615 Disposals (7) - (29) (36) Balance - December 31, 2019 $ 4,380 $ 4,738 $ 3,836 $ 12,954 Accumulated Depreciation Balance - January 1, 2019 $ (2,024) $ - $ (2,046) $ (4,070) Disposals 7 - 29 36 Depreciation (501) (704) (404) (1,609) Balance - December 31, 2019 $ (2,518) $ (704) $ (2,421) $ (5,643) Net book value - December 31, 2019 $ 1,862 $ 4,034 $ 1,415 $ 7,311

Credit Facilities (Tables)

Credit Facilities (Tables)	12 Months Ended
	Dec. 31, 2019
Text block [abstract]
Details of Bank Debt	(in thousands) December 31 December 31 Current portion $ - $ - Long-term portion 874,500 1,264,000 Gross bank debt outstanding 1 $ 874,500 $ 1,264,000 1) There is $5 million unamortized debt issue costs associated with the Revolving Facility which have been recorded as a long-term asset under the classification Other (see Note 26).
Summary of Lease Liabilities Explanatory	The lease liability relative to the Company’s offices located in Vancouver, Canada and the Cayman Islands is as follows: (in thousands) December 31 December 31 Current portion $ 724 $ - Long-term portion 3,528 - Total lease liabilities $ 4,252 $ -
Summary of Finance Lease Maturity Analys is Explanatory	The maturity analysis of these leases is as follows: December 31 (in thousands) 2019 Not later than 1 year $ 724 Later than 1 year and not later than 5 years 3,294 Later than 5 years 234 Total lease liabilities $ 4,252
Summary of Company's Finance Costs	A summary of the Company’s finance costs relative to the above facilities during the period is as follows: Years Ended December 31 (in thousands) Note 2019 2018 Interest Expense During Period Average principal outstanding during period $ 1,099,846 $ 1,005,222 Average effective interest rate during period 18.1 4.07% 3.57% Total interest expense incurred during period $ 44,767 $ 35,839 Costs related to undrawn credit facilities 18.1 3,834 3,707 Interest expense - lease liabilities 18.3 175 - Letters of guarantee 18.2 (46) 1,641 Total finance costs $ 48,730 $ 41,187

Issued Capital (Tables)

Issued Capital (Tables)	12 Months Ended
	Dec. 31, 2019
Text block [abstract]
Summary of Capital Issued	December 31 December 31 (in thousands) Note 2019 2018 Issued capital Share capital issued and outstanding: 447,771,433 common shares (December 31, 2018: 444,336,361 common shares) 19.1 $ 3,599,203 $ 3,516,437
Summary of Common Shares Issued and Outstanding	A continuity schedule of the Company’s issued and outstanding common shares from January 1, 2018 to December 31, 2019 is presented below: Number of Shares Weighted Average Price At January 1, 2018 442,724,309 Share purchase options exercised 1 46,800 Cdn$24.28 Restricted share units released 1 104,178 $0.00 Dividend reinvestment plan 2 1,461,074 US$18.28 At December 31, 2018 444,336,361 Share purchase options exercised 1 2,039,735 Cdn$25.79 Restricted share units released 1 133,670 $0.00 Dividend reinvestment plan 2 1,261,667 US$24.31 At December 31, 2019 447,771,433 1) The weighted average price of share purchase options exercised and restricted share units released represents the respective exercise price. 2) The Company has implemented a dividend reinvestment plan (“DRIP”) whereby shareholders can elect to have dividends reinvested directly into additional Wheaton common shares. The weighted average price for common shares issued under the DRIP represents the volume weighted average price of the common shares on the five trading days preceding the dividend payment date, less a discount of 3%.
Schedule of Dividends Declared	Years Ended December 31 (in thousands, except per share amounts) 2019 2018 Dividends declared per share $ 0.36 $ 0.36 Average number of shares eligible for dividend 446,267 443,386 Total dividends paid $ 160,656 $ 159,619 Paid as follows: Cash $ 129,986 81% $ 132,915 83% DRIP 1 30,670 19% 26,704 17% Total dividends paid $ 160,656 100% $ 159,619 100% Shares issued under the DRIP 1,262 1,461 1) The Company has implemented a DRIP whereby shareholders can elect to have dividends reinvested directly into additional Wheaton common shares. 2) As at December 31, 2019, cumulative dividends of $1,078 million have been declared and paid by the Company.

Reserves (Tables)

Reserves (Tables)	12 Months Ended
	Dec. 31, 2019
Text block [abstract]
Summary of Reserves	Note December 31 December 31 (in thousands) 2019 2018 Reserves Share purchase warrants 20.1 $ 83,077 $ 83,077 Share purchase options 20.2 24,010 31,002 Restricted share units 20.3 6,405 5,970 Long-term investment revaluation reserve, net of tax 20.4 47,209 (112,156 ) Total reserves $ 160,701 $ 7,893
Summary of Share Purchase Warrants	The Company’s share purchase warrants (“warrants”) are presented below: Number of Weighted Exchange Share Warrants outstanding 10,000,000 $43.75 1.00 $ 83,077
Summary of Fair Value of Share Purchase Options	The weighted average fair value of share purchase options granted and principal assumptions used in applying the Black-Scholes option pricing model are as follows: Years Ended December 31 2019 2018 Black-Scholes weighted average assumptions Grant date share price and exercise price Cdn$32.88 Cdn$26.25 Expected dividend yield 1.49% 1.73% Expected volatility 31% 35% Risk-free interest rate 1.60% 1.91% Expected option life, in years 2.5 2.5 Weighted average fair value per option granted Cdn$6.10 Cdn$5.49 Number of options issued during the period 583,500 549,210 Total fair value of options issued (000’s) $ 2,652 $ 2,347
Disclosure of Information About Options Outstanding and Exercisable	The following table summarizes information about the options outstanding and exercisable at December 31, 2019: Exercise Price (Cdn$) Exercisable Options Non-Exercisable Options Total Options Outstanding Weighted Remaining Contractual Life $23.26 691,250 - 691,250 1.2 years $23.27¹ 58,850 - 58,850 1.2 years $24.11 8,440 - 8,440 2.6 years $25.48 115,000 - 115,000 0.2 years $26.24 203,240 219,510 422,750 3.2 years $26.26¹ 5,900 - 5,900 0.2 years $26.51¹ 29,450 49,320 78,770 3.2 years $26.79¹ 47,900 - 47,900 2.2 years $27.03 - 2,230 2,230 4.3 years $27.51 380,900 - 380,900 2.2 years $27.60 1,820 - 1,820 2.4 years $28.43¹ 1,095 1,095 2,190 3.3 years $30.82 - 5,970 5,970 4.4 years $31.89¹ - 95,480 95,480 4.2 years $32.93 - 469,040 469,040 4.2 years $39.52 8,000 - 8,000 1.6 years 1,551,845 842,645 2,394,490 2.5 years 1) US$ share purchase options converted to Cdn$ using the exchange rate of 1.2988, being the Cdn$/US$ exchange rate at December 31, 2019.
Disclosure of Outstanding Share Purchase Options	A continuity schedule of the Company’s outstanding share purchase options from January 1, 2018 to December 31, 2019 is presented below: Number of Options Outstanding Weighted Average Exercise Price At January 1, 2018 4,232,260 Cdn$26.71 Granted (fair value - $2 million or Cdn$5.49 per option) 549,210 26.25 Exercised (46,800 ) 24.28 Forfeited (7,320 ) 29.24 Expired (844,000 ) 32.70 At December 31, 2018 3,883,350 Cdn$25.71 Granted (fair value - $3 million or Cdn$6.10 per option) 583,500 32.88 Exercised (2,039,735 ) 25.79 Forfeited (15,475 ) 31.04 Expired (17,150 ) 30.69 At December 31, 2019 2,394,490 Cdn$27.08
Disclosure of Restricted Share Units Reserve	A continuity schedule of the Company’s restricted share units outstanding from January 1, 2018 to December 31, 2019 is presented below: Number of RSUs Outstanding Weighted Average Intrinsic Value at At January 1, 2018 313,846 $20.71 Granted (fair value - $3 million) 161,060 20.42 Released (104,178) 21.49 Forfeited (595) 20.48 At December 31, 2018 370,133 $20.36 Granted (fair value - $3 million) 132,620 24.51 Released (133,670) 20.82 Forfeited (2,760) 23.19 At December 31, 2019 366,323 $21.67
Disclosure of Long Term Investment Revaluation Reserve	A continuity schedule of the Company’s long-term investment revaluation reserve from January 1, 2018 to December 31, 2019 is presented below: (in thousands) Change in Deferred Total At January 1, 2018 $ (38,110) $ (1,937) $ (40,047) Unrealized gain (loss) on LTIs 1 (39,985) (2,662) (42,647) Reallocate reserve to retained earnings upon disposal of LTIs 1 (34,061) 4,599 (29,462) At December 31, 2018 $ (112,156) $ - $ (112,156) Unrealized gain (loss) on LTIs 1 161,936 (9,623) 152,313 Reallocate reserve to retained earnings upon disposal of LTIs 1 16 7,282 (230) 7,052 At December 31, 2019 $ 57,062 $ (9,853) $ 47,209 1) LTIs refers to long-term investments in common shares held.

Stock Based Compensation (Table

Stock Based Compensation (Tables)	12 Months Ended
	Dec. 31, 2019
Text block [abstract]
Schedule of the Company's Outstanding PSUs	A continuity schedule of the Company’s outstanding PSUs (assuming a performance factor of 100% is achieved over the performance period) and the Company’s PSU accrual from January 1, 2018 to December 31, 2019 is presented below: (in thousands, except for number of PSUs outstanding) Number of Outstanding PSU accrual At January 1, 2018 656,599 $ 1,430 Granted 220,260 - Accrual related to the fair value of the PSUs outstanding - 9,517 Foreign exchange adjustment - (185) Paid 1 (218,615) - Forfeited (2,517) (6) At December 31, 2018 655,727 $ 10,756 Granted 191,410 - Accrual related to the fair value of the PSUs outstanding - 17,174 Foreign exchange adjustment - 479 Paid (229,050) (9,325) Forfeited (13,395) (15) At December 31, 2019 604,692 $ 19,069 1) The PSUs paid out during 2018 had a performance factor of 0% resulting in a cash disbursement of $Nil.
Schedule of Performance Share Units Outstanding	A summary of the PSUs outstanding at December 31, 2019 is as follows: Year of Grant Year of Maturity Number outstanding Estimated Value Anticipated Performance Factor at Maturity Percent of Dec 31, 2019 PSU Liability at Dec 31, 2019 2017 2020 204,142 $28.46 199% 92% $ 10,668 2018 2021 213,820 $28.46 192% 59% 6,895 2019 2022 186,730 $28.45 111% 26% 1,506 604,692 $ 19,069

Earnings per Share ("EPS") an_2

Earnings per Share ("EPS") and Diluted Earnings per Share ("Diluted EPS") (Tables)	12 Months Ended
	Dec. 31, 2019
Profit or loss [abstract]
Summary of Diluted EPS Calculated Based on Weighted Average Number of Shares Outstanding	Diluted EPS is calculated based on the following weighted average number of shares outstanding: Years Ended December 31 (in thousands) 2019 2018 Basic weighted average number of shares outstanding 446,021 443,407 Effect of dilutive securities Share purchase options 627 81 Restricted share units 282 374 Diluted weighted average number of shares outstanding 446,930 443,862
Summary of Share Purchase Options and Share Purchase Warrants Excluded From Computation of Diluted Earnings Per Share	The following table lists the number of share purchase options and share purchase warrants excluded from the computation of diluted earnings per share because the exercise prices exceeded the average market value of the common shares of Cdn$32.40, compared to Cdn$25.32 for the comparable period in 2018. Years Ended December 31 (in thousands) 2019 2018 Share purchase options 477 2,801 Share purchase warrants 10,000 10,000 Total 10,477 12,801

Supplemental Cash Flow Inform_2

Supplemental Cash Flow Information (Tables)	12 Months Ended
	Dec. 31, 2019
Text block [abstract]
Summary of Cash Flow Information	Change in Non-Cash Years Ended December 31 (in thousands) 2019 2018 Change in non-cash Accounts receivable $ (2,514) $ 828 Accounts payable and accrued liabilities (9,791) 7,977 Other 468 159 Total change in non-cash $ (11,837) $ 8,964

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2019
Text block [abstract]
Schedule of Income Tax Expense (Recovery)	Income tax recognized in net earnings is comprised of the following: Years Ended December 31 (in thousands) 2019 2018 Current income tax expense related to foreign jurisdictions $ 73 $ 86 Deferred income tax expense (recovery) related to: Origination and reversal of temporary differences $ 7,311 $ 841 Write down (reversal of write down) or recognition of prior period temporary differences (16,521 ) (5,393 ) Total deferred income tax expense (recovery) from operations $ (9,210 ) $ (4,552 ) Total income tax expense (recovery) from operations $ (9,137 ) $ (4,466 ) Income tax expense related to CRA Settlement 1 Current income tax expense related to CRA Settlement $ 71 $ 4,020 Reversal of previously recognized non-capital - 3,848 Income tax expense offset by previously unrecognized non-capital - 12,466 Total income tax expense related to CRA Settlement 2 $ 71 $ 20,334 Income tax expense (recovery) recognized in net earnings $ (9,066 ) $ 15,868 1) Reference to the CRA Settlement refers to the settlement of the 2005 to 2010 tax dispute and the application of the CRA Settlement principles to the 2011 to 2017 taxation years. Refer to the discussion 9 2) The figures for 2018 are net non-capital
Schedule of Income Tax Recognized as Component of OCI	Income tax recognized as a component of OCI is comprised of the following: Years Ended December 31 (in thousands) 2019 2018 Income tax expense (recovery) related to LTIs - $ 9,623 $ 2,662
Schedule of Income Tax Recognized Directly in Equity	Income tax recognized directly in equity is comprised of the following: Years Ended December 31 (in thousands) 2019 2018 Income tax expense (recovery) related to share issue costs Origination and reversal of temporary differences $ - $ 1,078 Write down (reversal of write down) or recognition of prior period temporary differences $ (376 ) $ (3,001 ) Income tax expense (recovery) from operations $ (376 ) $ (1,923 ) Income tax recovery related to CRA Settlement Benefit of previously unrecognized non-capital losses related to share issue costs $ - $ (12,466 ) Income tax expense (recovery) recognized in equity $ (376 ) $ (14,389 )
Schedule of Provision for Income taxes	The provision for income taxes differs from the amount that would be obtained by applying the statutory income tax rate to consolidated earnings before income taxes due to the following: Years Ended December 31 (in thousands) 2019 2018 Earnings before income taxes $ 77,072 $ 442,983 Canadian federal and provincial income tax rates 27.00 % 27.00 % Income tax expense (recovery) based on above rates $ 20,809 $ 119,605 Non-deductible 3,291 4,676 Differences in tax rates in foreign jurisdictions (78,724 ) (133,361 ) Impact of CRA Settlement 71 20,334 Current period unrecognized temporary differences - impairment of mineral stream interests 44,796 - Current period unrecognized temporary differences - 17,212 10,007 Write down (reversal of write down) or recognition of prior period temporary differences (16,521 ) (5,393 ) Income tax expense (recovery) $ (9,066 ) $ 15,868
Deferred Income Tax Assets and Liabilities Recognized	The recognized deferred income tax assets and liabilities are offset on the balance sheet and relate to Canada, except for the foreign withholding tax. The movement in deferred income tax assets and liabilities for the years ended December 31, 2019 and December 31, 2018, respectively, is shown below: Year Ended December 31, 2019 Recognized deferred income tax assets and liabilities Opening Recovery Recovery Recovery Closing Deferred tax assets Non-capital 1 $ 3,823 $ 4,497 $ - $ 436 $ 8,756 Capital loss carryforward 2 - 4,503 4,450 - 8,953 Other 3 387 307 - - 694 Deferred tax liabilities Interest capitalized for accounting (87 ) - - - (87 ) Debt and share financing fees 4 (591 ) (60 ) - (60 ) (711 ) Unrealized gains on long-term investments - - (14,073 ) - (14,073 ) Mineral stream interests 5 (3,532 ) - - - (3,532 ) Foreign withholding tax (111 ) (37 ) - - (148 ) Total $ (111 ) $ 9,210 $ (9,623 ) $ 376 $ (148 ) 1) As at December 31, 2019, the Company had recognized the tax effect on $32 million of non-capital 2 ) As at December 31, 2 019, the the tax effect on of net capital losses to offset unrealized taxable capital gains on long-term investments. 3) Other includes capital assets, charitable donation carryforward, and PSU and pension liabilities. 4) Debt and share financing fees are deducted over a five year period for Canadian income tax purposes. For accounting purposes, debt financing fees are deducted over the term of the credit facility and share financing fees are charged directly to issued capital. 5) The Company’s position, as reflected in its filed Canadian income tax returns and consistent with the terms of the PMPAs, is that the cost of the precious metal acquired under the Canadian PMPAs is equal to the market value while a deposit is outstanding (where applicable to an agreement), and the cash cost thereafter. For accounting purposes, the cost of the mineral stream interests is depleted on a unit-of-production Year Ended December 31, 2018 Recognized deferred income tax assets and liabilities Opening Recovery LTI Recovery Recovery Closing Deferred tax assets Non-capital $ 3,848 $ (2,057 ) $ - $ - $ 2,032 $ 3,823 Capital loss carryforward 1,965 2,633 (4,598 ) - - - Other 147 240 - - - 387 Deferred tax liabilities Interest capitalized for accounting (87 ) - - - - (87 ) Debt and share financing fees (375 ) (107 ) - - (109 ) (591 ) Kutcho Convertible Note (29 ) 29 - - - - Unrealized gains on long-term investments (1,937 ) 1 4,598 (2,662 ) - - Mineral stream interests (3,532 ) - - - - (3,532 ) Foreign withholding tax (76 ) (35 ) - - - (111 ) Total $ (76 ) $ 704 $ - $ (2,662 ) $ 1,923 $ (111 )
Schedule of Deferred Income Tax Assets Unrecognized	Deferred income tax assets in Canada not recognized are shown below: (in thousands) December 31 December 31 Non-capital 1 $ 19,145 $ 7,209 Debt and equity financing fees 1,383 4,474 Mineral stream interests 107,785 67,717 Other 4,282 3,656 Capital loss carryforward - 7,723 Kutcho Convertible Note 951 648 Unrealized losses on long-term investments 6,733 15,907 Total $ 140,279 $ 107,334 1) As at December 31, 2019, the Company had not recognized the tax effect on $71 million of non-capital

Other Current Assets (Tables)

Other Current Assets (Tables)	12 Months Ended
	Dec. 31, 2019
Miscellaneous current assets [abstract]
Disclosure of other current assets	The composition of other current assets is shown below: December 31 December 31 (in thousands) Note 2019 2018 Non-revolving $ 431 $ - Prepaid expenses 1,492 1,508 Class action settlement recoverable 29 41,500 - Other 81 33 Total other current assets $ 43,504 $ 1,541

Other Long-Term Assets (Tables)

Other Long-Term Assets (Tables)	12 Months Ended
	Dec. 31, 2019
Text block [abstract]
Composition of other long term assets table explanatory	The composition of other long-term assets is shown below: December 31 December 31 (in thousands) Note 2019 2018 Intangible assets $ 3,419 $ 3,291 Debt issue costs - Revolving Facility 18.1 5,154 5,507 Adventus ROFR 16 615 615 Subscription rights 1,524 - Other 3,854 902 Total other long-term assets $ 14,566 $ 10,315

Related Party Transactions (Tab

Related Party Transactions (Tables)	12 Months Ended
	Dec. 31, 2019
Text block [abstract]
Schedule of Key Management Personnel Compensation, Including Directors	Key management personnel compensation, including directors, is as follows: Years Ended December 31 (in thousands) 2019 2018 Short-term benefits 1 $ 6,599 $ 7,402 Post-employment benefits 661 56 PSUs 2 10,643 6,001 Equity settled stock based compensation (a non-cash 3 3,709 3,559 Total executive compensation $ 21,612 $ 17,018 1) Short-term employee benefits include salaries, bonuses payable within twelve months of the balance sheet date and other annual employee benefits. 2) As more fully disclosed in Note 21.1, PSU compensation expense is recorded on a straight-line basis over the three year vesting period, with the expense being adjusted at the end of each reporting period to reflect (i) the fair value of common shares; (ii) the number of PSUs anticipated to vest; and (iii) the anticipated performance factor. 3) As more fully disclosed in Notes 20.2 and 20.3, equity settled stock based compensation expense is recorded on a straight-line basis over the vesting period.

Post-Employment Benefit Costs (

Post-Employment Benefit Costs (Tables)	12 Months Ended
	Dec. 31, 2019
Text block [abstract]
Schedule of post employment benefits	A summary of the Company’s post-employment benefit costs during the years ended December 31, 2019 and 2018 is summarized below: Years Ended December 31 (in thousands) 2019 2018 Post-employment benefits Supplemental Employee Retirement Plan (SERP) $ 810 $ - Group RRSP 223 226 Total post-employment benefits $ 1,033 $ 226

Commitments and Contingencies (

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2019
Text block [abstract]
Summary of Commitments to Purchase Mineral Stream	The following table summarizes the Company’s commitments to make per-ounce Mineral Stream Interests Attributable Payable Production to be Per Unit of Measurement Cash Payment 1, 2 Term of Date of Gold Silver Palladium Cobalt Gold Silver Palladium Cobalt Peñasquito 0% 25% 0% 0% n/a $ 4.26 n/a n/a Life of Mine 24-Jul-07 Constancia 50% ³ 100% 0% 0% $ 404 4 $ 5.96 4 n/a n/a Life of Mine 8-Aug-12 Salobo 75% 0% 0% 0% $ 408 n/a n/a n/a Life of Mine 28-Feb-13 Sudbury 70% 0% 0% 0% $ 400 n/a n/a n/a 20 years 28-Feb-13 Antamina 0% 33.75% 0% 0% n/a variable 5 n/a n/a Life of Mine 3-Nov-15 San Dimas variable 6 0% 6 0% 0% $ 606 n/a n/a n/a Life of Mine 10-May-18 Stillwater 100% 0% 4.5% 7 0% variable 8 n/a variable 8 n/a Life of Mine 16-Jul-18 Voisey’s Bay 0% 0% 0% 42.4% 9 n/a n/a n/a variable 10 Life of Mine 11-Jun-18 Other Los Filos 0% 100% 0% 0% n/a $ 4.43 n/a n/a 25 years 15-Oct-04 Zinkgruvan 0% 100% 0% 0% n/a $ 4.43 n/a n/a Life of Mine 8-Dec-04 Yauliyacu 0% 100% ¹¹ 0% 0% n/a $ 8.89 ¹² n/a n/a Life of Mine 23-Mar-06 Stratoni 0% 100% 0% 0% n/a $ 9.33 ¹³ n/a n/a Life of Mine 23-Apr-07 Neves-Corvo 0% 100% 0% 0% n/a $ 4.30 n/a n/a 50 years 5-Jun-07 Aljustrel 0% 100% 14 0% 0% n/a variable 15 n/a n/a 50 years 5-Jun-07 Minto 100% 16 100% 0% 0% variable 17 $ 4.27 n/a n/a Life of Mine 20-Nov-08 Keno Hill 0% 25% 0% 0% n/a variable 18 n/a n/a Life of Mine 2-Oct-08 Pascua-Lama 0% 25% 0% 0% n/a $ 3.90 n/a n/a Life of Mine 8-Sep-09 Rosemont 100% 100% 0% 0% $ 450 $ 3.90 n/a n/a Life of Mine 10-Feb-10 Loma de La Plata 0% 12.5% 0% 0% n/a $ 4.00 n/a n/a Life of Mine n/a 19 777 50% 100% 0% 0% $ 420 4 $ 6.20 4 n/a n/a Life of Mine 8-Aug-12 Early Deposit Toroparu 10% 50% 0% 0% $ 400 $ 3.90 n/a n/a Life of Mine 11-Nov-13 Cotabambas 25% 20 100% 20 0% 0% $ 450 $ 5.90 n/a n/a Life of Mine 21-Mar-16 Kutcho 100% ²¹ 100% ²¹ 0% 0% variable ²² variable ²² n/a n/a Life of Mine 14-Dec-17 1) Subject to an annual inflationary adjustment with the exception of Loma de La Plata and Sudbury. 2) All amounts are measured on a per ounce basis with the exception of cobalt which is measured on a per pound basis. Should the prevailing market price for the applicable metal be lower than this amount, the per ounce or per pound cash payment will be reduced to the prevailing market price, with the exception of Yauliyacu where the per ounce cash payment will not be reduced below $4.35 per ounce, subject to an annual inflationary factor. 3) Gold recoveries will be set at 55% for the Constancia deposit and 70% for the Pampacancha deposit until 265,000 ounces of gold have been delivered to the Company. 4) Subject to an increase to $9.90 per ounce of silver and $550 per ounce of gold after the initial 40-year 5) The Company is committed to pay Glencore 20% of the spot price of silver for each ounce of silver delivered under the Antamina PMPA. 6) Under the terms of the San Dimas PMPA, the Company is entitled to an amount equal to 25% of the payable gold production plus an additional amount of gold equal to 25% of the payable silver production converted to gold at a fixed gold to silver exchange ratio of 70:1 from the San Dimas mine. If the average gold to silver price ratio decreases to less than 50:1 or increases to more than 90:1 for a period of 6 months or more, then the “70” shall be revised to “50” or “90”, as the case may be, until such time as the average gold to silver price ratio is between 50:1 to 90:1 for a period of 6 months or more in which event the “70” shall be reinstated. 7) The Company is committed to purchase 4.5% of Stillwater palladium production until 375,000 ounces are delivered to the Company, thereafter 2.25% of Stillwater palladium production until 550,000 ounces are delivered to the Company and 1% of Stillwater palladium production thereafter for the life of mine. 8) The Company is committed to pay Sibanye 18% of the spot price of gold and palladium for each ounce of gold and palladium delivered under the Stillwater PMPA until the market value of gold and palladium delivered to Wheaton, net of the per ounce cash payment, exceeds the initial upfront cash deposit, and 22% of the spot price thereafter. 9) Once the Company has received 31 million pounds of cobalt, the Company’s attributable cobalt production to be purchased will be reduced to 21.2%. 10) The Company is committed to pay Vale 18% of the spot price of cobalt per pound of cobalt delivered under the agreement until the market value of cobalt delivered to Wheaton, net of the per pound cash payment, exceeds the initial upfront cash deposit, and 22% of the spot price thereafter. 11) The Company is committed to purchase from Glencore an amount equal to 100% of the first 1.5 million ounces of payable silver produced at Yauliyacu per annum and 50% of any excess. 12) Should the market price of silver exceed $20 per ounce, in addition to the $8.89 per ounce, the Company is committed to pay Glencore an additional amount for each ounce of silver delivered equal to 50% of the excess, to a maximum of $10 per ounce, such that when the market price of silver is $40 or above, the Company will pay Glencore $18.89 per ounce of silver delivered. 13) In October 2015, in order to incentivize additional exploration and potentially extend the limited remaining mine life of Stratoni, Wheaton and Eldorado Gold agreed to modify the Stratoni PMPA. The primary modification is to increase the production price per ounce of silver delivered to Wheaton over the current fixed price by one of the following amounts: (i) $2.50 per ounce of silver delivered if 10,000 meters of drilling is completed outside of the existing ore body and within Wheaton’s defined area of interest (“Expansion Drilling”); (ii) $5.00 per ounce of silver delivered if 20,000 meters of Expansion Drilling is completed; and (iii) $7.00 per ounce of silver delivered if 30,000 meters of Expansion Drilling is completed. Drilling in all three cases must be completed by December 31, 2020, in order for the agreed upon increase in production price to be initiated. The figures in the above table reflect the fact that Eldorado completed 20,000 meters of Expansion Drilling in June 2019. 14) Wheaton only has the rights to silver contained in concentrate containing less than 15% copper at the Aljustrel mine. 15) In respect of the Aljustrel PMPA, the Company is committed to pay Almina 50% of the amount received under the respective concentrate sales contracts. 16) The Company is committed to acquire 100% of the first 30,000 ounces of gold produced per annum and 50% thereafter. 17) The Company has amended the Minto PMPA such that the per ounce cash payment per ounce of gold delivered will be 75% of the spot price of gold for each ounce of gold delivered under the Minto PMPA. This amended pricing will end on the earlier of (i) 14 months after the first delivery is due; or (ii) once 11,000 ounces of gold have been delivered to the Company. Once this amended pricing ends, the per ounce cash payment per ounce of gold delivered will be $325, subject to an increase in periods where the market price of copper is lower than $2.50 per pound. 18) The production payment related to the Keno Hill silver interest is a function of the silver head grade and silver spot price in the month in which the silver is produced. 19) Terms of the agreement not yet finalized. 20) Once 90 million silver equivalent ounces attributable to Wheaton have been produced, the attributable production to be purchased will decrease to 16.67% of gold production and 66.67% of silver production for the life of mine. 21) Once 51,000 ounces of gold and 5.6 million ounces of silver have been delivered to Wheaton, attributable production to be purchased will decrease to 66.67% of gold and silver production for the life of mine. 22) The Company is committed to pay Kutcho 20% of the spot price of gold and silver for each ounce of gold and silver delivered under the Kutcho Early Deposit Agreement.
Summary of Other Contractual Obligations and Contingencies	Other Contractual Obligations and Contingencies Obligations With Scheduled Payment Dates (in thousands) 2020 2021 - 2023 2024 - 2025 After 2025 Sub-Total Other Total Bank debt 1 $ - $ - $ 874,500 $ - $ 874,500 $ - $ 874,500 Interest 2 25,363 68,061 5,877 - 99,301 - 99,301 Payments for mineral stream interests 3 Rosemont 4 - - - - - 231,150 231,150 Loma de La Plata - - - - - 32,400 32,400 Payments for early deposit mineral stream interest Toroparu - - - - - 138,000 138,000 Cotabambas 1,500 4,000 - - 5,500 126,000 131,500 Kutcho - - - - - 58,000 58,000 Non-revolving 5 564 - - - 564 - 564 Leases liabilities 865 2,675 1,144 - 4,684 - 4,684 Total contractual obligations $ 28,292 $ 74,736 $ 881,521 $ - $ 984,549 $ 585,550 $ 1,570,099 1) At December 31, 2019, the Company had $875 million drawn and outstanding on the Revolving Facility. 2) As the applicable interest rates are floating in nature, the interest charges are estimated based on market-based forward interest rate curves at the end of the reporting period combined with the assumption that the principal balance outstanding at December 31, 2019 does not change until the debt maturity date. 3) Does not reflect the contingent payment due related to the Salobo gold purchase agreement (see the Salobo section on the following page). 4) Includes contingent transaction costs of $1 million. 5) Represents the maximum amount available to Kutcho under the non-revolving

Segmented Information (Tables)

Segmented Information (Tables)	12 Months Ended
	Dec. 31, 2019
Text block [abstract]
Schedule of Operating Segments	The Company’s reportable operating segments, which are the components of the Company’s business where discrete financial information is available and which are evaluated on a regular basis by the Company’s Chief Executive Officer (“CEO”), who is the Company’s chief operating decision maker, for the purpose of assessing performance, are summarized in the tables below: Year Ended December 31, 2019 (in thousands) Sales Cost of Sales Depletion Gross Margin Impairment 1 Net (Loss) Earnings Cash Flow Total Assets Gold Salobo 5 $ 365,448 $ 106,282 $ 100,803 $ 158,363 $ - $ 158,363 $ 259,166 $ 2,605,257 Sudbury 2, 5 38,234 10,946 22,420 4,868 - 4,868 27,385 344,043 Constancia 5 27,613 7,945 7,141 12,527 - 12,527 19,668 110,406 San Dimas 62,528 26,994 13,828 21,706 - 21,706 35,534 194,367 Stillwater 17,303 3,094 6,433 7,776 - 7,776 14,209 229,994 Other 3, 5 29,919 8,736 8,191 12,992 - 12,992 21,561 13,168 Total gold interests $ 541,045 $ 163,997 $ 158,816 $ 218,232 $ - $ 218,232 $ 377,523 $ 3,497,235 Silver Peñasquito $ 74,578 $ 19,267 $ 14,020 $ 41,291 $ - $ 41,291 $ 55,310 $ 374,702 Antamina 5 76,328 15,322 41,267 19,739 - 19,739 61,007 668,810 Constancia 38,895 14,258 18,044 6,593 - 6,593 24,637 228,187 Other 4, 5 98,600 40,059 14,960 43,581 - 43,581 55,509 487,693 Total silver interests $ 288,401 $ 88,906 $ 88,291 $ 111,204 $ - $ 111,204 $ 196,463 $ 1,759,392 Palladium Stillwater $ 31,886 $ 5,656 $ 9,719 $ 16,511 $ - $ 16,511 $ 26,230 $ 249,969 Cobalt Voisey’s Bay 5 $ - $ - $ - $ - $ 165,912 $ (165,912) $ - $ 227,510 Total mineral stream interests $ 861,332 $ 258,559 $ 256,826 $ 345,947 $ 165,912 $ 180,035 $ 600,216 $ 5,734,106 Other General and administrative $ (54,507) $ (46,292) Finance costs (48,730) (44,733) Other 274 (2,191) Income tax 9,066 (5,380) Total other $ (93,897) $ (98,596) $ 543,901 Consolidated $ 86,138 $ 501,620 $ 6,278,007 1) See Note 11 for more information. 2) Comprised of the operating Coleman, Copper Cliff, Garson, Creighton and Totten gold interests as well as the non-operating 3) Where a gold interest represents less than 10% of the Company’s sales, gross margin or aggregate asset book value and is not evaluated on a regular basis by the Company’s CEO for the purpose of assessing performance, the gold interest has been summarized under Other gold interests. Other gold interests are comprised of the operating 777 and Minto gold interests and the non-operating 4) Where a silver interest represents less than 10% of the Company’s sales, gross margin or aggregate asset book value and is not evaluated on a regular basis by the Company’s CEO for the purpose of assessing performance, the silver interest has been summarized under Other silver interests. Other silver interests are comprised of the operating Los Filos, Zinkgruvan, Yauliyacu, Stratoni, Neves-Corvo, Aljustrel, Minto and 777 silver interests and the non-operating 5) As it relates to mine operator concentration risk: a. The counterparty obligations under the Salobo, Sudbury and Voisey’s Bay PMPAs are guaranteed by the parent company Vale. Total revenues relative to Vale during the year ended December 31, 2019 were 47% of the Company’s total revenue. b. The counterparty obligations under the Antamina PMPA and the Yauliyacu PMPA (which is included as part of Other silver interests) are guaranteed by the parent company Glencore plc (“Glencore”) and its subsidiary. Total revenues relative to Glencore during the year ended December 31, 2019 were 12% of the Company’s total revenue. c. The counterparty obligations under the Constancia PMPA and the 777 PMPA (which is included as part of Other gold and silver interests) are guaranteed by the parent company Hudbay Minerals Inc. (“Hudbay”). Total revenues relative to Hudbay during the year ended December 31, 2019 were 11% of the Company’s total revenue. Should any of these mine operators become unable or unwilling to fulfill their obligations under their agreements with the Company, there could be a material adverse impact on the Company including, but not limited to, the Company’s revenue, net income and cash flows from operations. Year Ended December 31, 2018 (in thousands) Sales Cost of Sales Depletion Net Earnings Cash Flow From Operations Total Assets Gold Salobo 5 $ 336,474 $ 106,347 $ 102,672 $ 127,455 $ 230,126 $ 2,706,060 Sudbury 1, 5 21,785 6,804 13,525 1,456 14,959 366,463 Constancia 5 15,259 4,818 4,504 5,937 10,441 117,547 San Dimas 26,943 13,177 12,234 1,532 13,766 208,195 Stillwater 6,777 1,215 2,925 2,637 5,562 236,432 Other 2, 5 33,955 10,367 10,459 13,129 22,162 21,359 Total gold interests $ 441,193 $ 142,728 $ 146,319 $ 152,146 $ 297,016 $ 3,656,056 Silver San Dimas 3 $ 40,594 $ 10,549 $ 3,575 $ 26,470 $ 30,045 $ - Peñasquito 5 77,691 20,501 14,528 42,662 57,190 388,722 Antamina 5 86,408 17,265 47,561 21,582 69,143 710,077 Constancia 5 34,082 12,863 15,572 5,647 21,219 246,231 Other 4 104,804 40,232 20,699 43,873 64,645 502,638 Total silver interests $ 343,579 $ 101,410 $ 101,935 $ 140,234 $ 242,242 $ 1,847,668 Palladium Stillwater $ 9,240 $ 1,656 $ 4,033 $ 3,551 $ 7,584 $ 259,693 Cobalt Voisey’s Bay 5 $ - $ - $ - $ - $ - $ 393,422 Total mineral stream interests $ 794,012 $ 245,794 $ 252,287 $ 295,931 $ 546,842 $ 6,156,839 Other General and administrative $ (51,650) $ (29,564) Finance costs (41,187) (40,363) Gain on disposal of San Dimas SPA 3 245,715 - Other (5,826) 1,458 Income tax (15,868) (960) Total other $ 131,184 $ (69,429) $ 313,207 Consolidated $ 427,115 $ 477,413 $ 6,470,046 1) Comprised of the operating Coleman, Copper Cliff, Garson, Creighton and Totten gold interests as well as the non-operating 2) Where a gold interest represents less than 10% of the Company’s sales, gross margin or aggregate asset book value and is not evaluated on a regular basis by the Company’s CEO for the purpose of assessing performance, the gold interest has been summarized under Other gold interests. Other gold interests are comprised of the operating Minto and 777 gold interests and the non-operating 3) On May 10, 2018, the Company terminated the San Dimas SPA and concurrently entered into the new San Dimas PMPA. 4) Where a silver interest represents less than 10% of the Company’s sales, gross margin or aggregate asset book value and is not evaluated on a regular basis by the Company’s CEO for the purpose of assessing performance, the silver interest has been summarized under Other silver interests. Other silver interests are comprised of the operating Los Filos, Zinkgruvan, Yauliyacu, Stratoni, Neves-Corvo, Minto, and 777 silver interests, the non-operating 5) As it relates to mine operator concentration risk: a. The counterparty obligations under the Salobo, Sudbury and Voisey’s Bay PMPAs are guaranteed by the parent company Vale. Total revenues relative to Vale during the year ended December 31, 2018 were 45% of the Company’s total revenue. b. The counterparty obligations under the Antamina PMPA and the Yauliyacu PMPA (which is included as part of Other silver interests) are guaranteed by the parent company Glencore plc (“Glencore”) and its subsidiary. Total revenues relative to Glencore during the year ended December 31, 2018 were 15% of the Company’s total revenue. c. The counterparty obligations under the Peñasquito PMPA and the Los Filos PMPA (which is included as part of Other silver interests) are guaranteed by Goldcorp. Total revenues relative to Goldcorp during the year ended December 31, 2018 were 10% of the Company’s total revenue. d. The counterparty obligations under the Constancia PMPA and the 777 PMPA (which is included as part of Other gold and silver interests) are guaranteed by the parent company Hudbay Minerals Inc. (“Hudbay”). Total revenues relative to Hudbay during the year ended December 31, 2018 were 10% of the Company’s total revenue. Should any of these mine operators become unable or unwilling to fulfill their obligations under their agreements with the Company, there could be a material adverse impact on the Company including, but not limited to, the Company’s revenue, net income and cash flows from operations.
Schedule of Company's Geographical Information	The Company’s geographical information, which is based on the location of the mining operations to which the mineral stream interests relate, are summarized in the tables below: Carrying Amount at December 31, 2019 (in thousands) Sales Gold Interests Silver Interests Palladium Interests Cobalt Interests Total North America Canada $ 74,307 9% $ 357,212 $ 32,124 $ - $ 227,510 $ 616,846 11% United States 49,189 6% 229,994 566 249,969 - 480,529 8% Mexico 139,275 16% 194,365 376,020 - - 570,385 10% Europe Greece 9,339 1% - 1,990 - - 1,990 0% Portugal 28,012 3% - 21,355 - - 21,355 0% Sweden 25,250 3% - 35,059 - - 35,059 1% South America Argentina/Chile 1 - 0% - 264,403 - - 264,403 5% Brazil 365,448 42% 2,605,258 - - - 2,605,258 45% Peru 170,512 20% 110,406 1,027,875 - - 1,138,281 20% Consolidated $ 861,332 100% $ 3,497,235 $ 1,759,392 $ 249,969 $ 227,510 $ 5,734,106 100% 1) Includes the Pascua-Lama project, which straddles the border of Argentina and Chile. Carrying Amount at December 31, 2018 (in thousands) Sales Gold Interests Silver Interests Palladium Interests Cobalt Interests Total North America Canada $ 64,589 8% $ 387,823 $ 33,901 $ - $ 393,422 $ 815,146 13% United States 16,018 1% 236,432 551 259,693 - 496,676 8% Mexico 147,274 19% 208,194 390,079 - - 598,273 10% Europe Greece 8,020 1% - 5,884 - - 5,884 0% Portugal 20,484 3% - 22,420 - - 22,420 0% Sweden 24,188 3% - 37,371 - - 37,371 1% South America Argentina/Chile 1 4,444 1% - 264,401 - - 264,401 4% Brazil 336,474 42% 2,706,061 - - - 2,706,061 44% Peru 172,521 22% 117,546 1,093,061 - - 1,210,607 20% Consolidated $ 794,012 100% $ 3,656,056 $ 1,847,668 $ 259,693 $ 393,422 $ 6,156,839 100% 1) Includes the Pascua-Lama project, which straddles the border of Argentina and Chile.

Description of Business and N_2

Description of Business and Nature of Operations - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2019AgreementAsset
Description of business and nature of operations [abstract]
Number of long-term purchase agreements | Agreement	23
Number of early deposit long-term purchase agreements | Agreement	3
Number of mining companies engaged in precious metal purchase agreements | Agreement	17
Number of currently operating mining assets	20
Number of mining assets under various stages of development	9
Number of countries operating mining assets	11
Number of mining assets placed in care and maintenance	1

Significant Accounting Polici_4

Significant Accounting Policies - Additional Information (Detail)	Jan. 01, 2019USD ($)	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)
Disclosure of significant accounting policies [line items]
Proportion of ownership interest in subsidiary		100.00%
Cash and cash equivalents maximum maturity period		3 months
Vesting period		3 years
Lease liability		$ 4,252,000
Bottom of range [member]
Disclosure of significant accounting policies [line items]
Useful life measured as period of time, property, plant and equipment		3 years
Top of range [member]
Disclosure of significant accounting policies [line items]
Useful life measured as period of time, property, plant and equipment		10 years
Performance share units (PSUs) [member]
Disclosure of significant accounting policies [line items]
Vesting period		3 years
Adoption of IFRS 16 [member]
Disclosure of significant accounting policies [line items]
Right of uses assets	$ 5,000,000
Number Of Leases	2
Lease liability	$ 4,679,000
Forward contract [member]
Disclosure of significant accounting policies [line items]
Forward contracts		$ 0	$ 0
Wheaton Precious Metals International Ltd [member]
Disclosure of significant accounting policies [line items]
Proportion of ownership interest in subsidiary		100.00%
Wheaton Precious Metals (Cayman) Co [member]
Disclosure of significant accounting policies [line items]
Proportion of ownership interest in subsidiary		100.00%
Silver Wheaton Luxembourg S.a.r.l [member]
Disclosure of significant accounting policies [line items]
Proportion of ownership interest in subsidiary		100.00%

Significant Accounting Polici_5

Significant Accounting Policies - Schedule of Lease Liability (Detail) - USD ($) $ in Thousands	Jan. 01, 2019	Dec. 31, 2019	Dec. 31, 2018
Disclosure of significant accounting policies [line items]
Lease commitment			$ 3,785
Current portion		$ 724	0
Long-term portion		3,528	$ 0
Lease liability		$ 4,252
Adoption of IFRS 16 [member]
Disclosure of significant accounting policies [line items]
Extension option reasonably certain to be exercised	$ 1,530
Less: Discounting using the incremental borrowing rate	(636)
Current portion	637
Long-term portion	4,042
Lease liability	$ 4,679

Significant Accounting Polici_6

Significant Accounting Policies - Schedule of Lease Liability (Parenthetical) (Detail) - Adoption of IFRS 16 [member]	Jan. 01, 2019
Disclosure of significant accounting policies [line items]
Extension Period	5 years
Bottom of range [member]
Disclosure of significant accounting policies [line items]
Estimated incremental borrowing rate	3.9764%
Top of range [member]
Disclosure of significant accounting policies [line items]
Estimated incremental borrowing rate	4.334%

Key Sources of Estimation Unc_2

Key Sources of Estimation Uncertainty and Critical Accounting Judgments - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Disclosure of key sources of estimation uncertainty [line items]
Mineral stream interests	$ 5,734,106,000	$ 6,156,839,000
Kutcho Copper Corp [member]
Disclosure of key sources of estimation uncertainty [line items]
Percentage of ownership interest in associate	10.00%
Minto derivative liability [member] | Consensus pricing [member]
Disclosure of key sources of estimation uncertainty [line items]
Analyst consensus copper price per pound exceeds	$ 2.50

Financial Instruments - Classif

Financial Instruments - Classification of Financial Assets and Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Financial assets
Cash and cash equivalents	$ 103,986	$ 75,767	$ 98,521
Trade receivables from provisional concentrate sales, net of fair value adjustment	4,350	1,332
Convertible note receivable	21,856	12,899
Long-term investments - common shares held	309,757	164,753
Class Action Settlement Recoverable	41,500
Total financial assets	484,668	255,605
Financial liabilities
Accounts payable and accrued liabilities	11,794	19,883
Bank debt	874,500	1,264,000
Pension liability	810	0
Total financial liabilities	928,604	1,283,883
Financial assets at fair value through net earnings, category [member]
Financial assets
Cash and cash equivalents	103,986	75,767
Trade receivables from provisional concentrate sales, net of fair value adjustment	4,350	1,332
Convertible note receivable	21,856	12,899
Financial assets at fair value through other comprehensive income, category [member]
Financial assets
Long-term investments - common shares held	309,757	164,753
Financial assets at amortized cost, category [member]
Financial assets
Non-revolving term loan	431
Other accounts receivable	2,788	854
Class Action Settlement Recoverable	41,500
Financial liabilities at amortized cost, category [member]
Financial liabilities
Accounts payable and accrued liabilities	11,794	19,883
Bank debt	874,500	$ 1,264,000
Pension liability	810
Class Action Settlement	$ 41,500

Financial Instruments - Maximum

Financial Instruments - Maximum Exposure to Credit Risk Related to Financial Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disclosure of detailed information about financial instruments [line items]
Cash and cash equivalents	$ 103,986	$ 75,767	$ 98,521
Trade receivables from provisional concentrate sales, net of fair value adjustment	4,350	1,332
Convertible note receivable	21,856	12,899
Class Action Settlement Recoverable	41,500
Maximum exposure to credit risk [member]
Disclosure of detailed information about financial instruments [line items]
Cash and cash equivalents	103,986	75,767
Trade receivables from provisional concentrate sales, net of fair value adjustment	4,350	1,332
Other accounts receivables	2,788	854
Non-revolving term loan	431
Convertible note receivable	21,856	12,899
Class Action Settlement Recoverable	41,500
Maximum exposure to credit risk related to financial assets	$ 174,911	$ 90,852

Financial Instruments - Additio

Financial Instruments - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disclosure of detailed information about financial instruments [line items]
Cash and cash equivalents	$ 103,986,000	$ 75,767,000	$ 98,521,000
Working capital	90,000,000	51,000,000
Long-term investments-equity investments held	$ 309,757,000	164,753,000
Change in interest rate, percentage	1.00%
Increased/decreased in other comprehensive income on assumption	$ 31,000,000	$ 16,000,000
Interest rate risk [member]
Disclosure of detailed information about financial instruments [line items]
Weighted average effective interest rate paid on its outstanding borrowings, percentage	4.07%	3.57%
Change in interest rate, percentage		1.00%
Impacted in interest expense due to fluctuation in interest rates	$ 11,000,000	$ 10,000,000
Minto derivative liability [member]
Disclosure of detailed information about financial instruments [line items]
Minimum market price of copper before Minto top up payment is required	2.50	2.50
Fair value of Minto derivative liability	0	0
Financial assets at fair value through other comprehensive income, category [member]
Disclosure of detailed information about financial instruments [line items]
Long-term investments-equity investments held	$ 309,757,000	$ 164,753,000
Kutcho [member]
Disclosure of detailed information about financial instruments [line items]
Interest rate	21.00%
Volatility rate	30.00%
Non convertible debt interest rate, fluctuation	1.00%
Convertible debt volatility rate, fluctuation	5.00%
Gold X [Member]
Disclosure of detailed information about financial instruments [line items]
Interest rate	12.00%
Volatility rate	30.00%
Non convertible debt interest rate, fluctuation	1.00%
Convertible debt volatility rate, fluctuation	5.00%

Financial Instruments - Timing

Financial Instruments - Timing Associated with Remaining Contractual Payments Relating to Financial Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Non-derivative financial liabilities
Bank debt	$ 874,500	$ 1,264,000
Accounts payable and accrued liabilities	11,794	$ 19,883
Non-Derivative Financial Instrument [Member]
Non-derivative financial liabilities
Bank debt	874,500
Interest on bank debt	99,301
Accounts payable and accrued liabilities	11,794
Performance share units	19,069
Pension liability	810
Lease liability	4,252
Class Action Settlement	41,500
Financial liabilities and contractual commitments, undiscounted cash flows	1,051,226
Non-Derivative Financial Instrument [Member] | 2020 [member]
Non-derivative financial liabilities
Bank debt	0
Interest on bank debt	25,363
Accounts payable and accrued liabilities	11,794
Performance share units	10,668
Pension liability	810
Lease liability	724
Class Action Settlement	41,500
Financial liabilities and contractual commitments, undiscounted cash flows	90,859
Non-Derivative Financial Instrument [Member] | 2021-2023 [member]
Non-derivative financial liabilities
Bank debt	0
Interest on bank debt	68,061
Accounts payable and accrued liabilities	0
Performance share units	6,895
Pension liability	0
Lease liability	2,413
Class Action Settlement
Financial liabilities and contractual commitments, undiscounted cash flows	77,369
Non-Derivative Financial Instrument [Member] | 2024 - 2025 [member]
Non-derivative financial liabilities
Bank debt	874,500
Interest on bank debt	5,877
Accounts payable and accrued liabilities	0
Performance share units	1,506
Pension liability	0
Lease liability	1,115
Class Action Settlement
Financial liabilities and contractual commitments, undiscounted cash flows	882,998
Non-Derivative Financial Instrument [Member] | 2025 [member]
Non-derivative financial liabilities
Bank debt	0
Interest on bank debt	0
Accounts payable and accrued liabilities	0
Performance share units	0
Pension liability	0
Lease liability	0
Class Action Settlement
Financial liabilities and contractual commitments, undiscounted cash flows	$ 0

Financial Instruments - Timin_2

Financial Instruments - Timing Associated with Remaining Contractual Payments Relating to Financial Liabilities (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2019
Revolving facility [member]
Disclosure of detailed information about financial commitments [line items]
Revolving credit facility extended maturity	February 27, 2025

Financial Instruments - Summary

Financial Instruments - Summary of Carrying Amounts of Canadian Dollar Denominated Monetary Assets and Monetary Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Monetary assets
Cash and cash equivalents	$ 103,986	$ 75,767	$ 98,521
Accounts receivable	7,138	2,186
Long-term investments - common shares held	309,757	164,753
Convertible note receivable	21,856	12,899
Other long-term assets	14,566	10,315
Monetary liabilities
Accounts payable and accrued liabilities	11,794	19,883
Current taxes payable	0	3,361
Lease Liability	4,252
Pension Liability	810	0
Currency risk [member]
Monetary assets
Cash and cash equivalents	4,148	731
Accounts receivable	2,519	637
Long-term investments - common shares held	309,757	161,421
Convertible note receivable	11,837	12,899
Non-revolving term loan	431
Other long-term assets	3,450	1,105
Total Canadian dollar denominated monetary assets	332,142	176,793
Monetary liabilities
Accounts payable and accrued liabilities	6,059	16,128
Current taxes payable		3,361
Performance share units	15,423	8,808
Lease Liability	2,748
Pension Liability	810
Total Canadian dollar denominated monetary liabilities	$ 25,040	$ 28,297

Financial Instruments - Summa_2

Financial Instruments - Summary of Sensitivity to 10% Increase or Decrease in Canadian Dollar Relative to United States Dollar (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Disclosure of sensitivity to ten percentage increase or decrease in exchange rate [abstract]
Increase (decrease) in net earnings	$ (265)	$ (1,292)
Increase (decrease) in other comprehensive income	30,976	16,142
Increase (decrease) in total comprehensive income	30,711	14,850
Increase (decrease) in net earnings	265	1,292
Increase (decrease) in other comprehensive income	(30,976)	(16,142)
Increase (decrease) in total comprehensive income	$ (30,711)	$ (14,850)

Financial Instruments - Summa_3

Financial Instruments - Summary of Financial Assets and Liabilities Measured at Fair Value by Level within Fair Value Hierarchy (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disclosure of fair value measurements of assets and liabilities [line items]
Cash and cash equivalents	$ 103,986	$ 75,767	$ 98,521
Trade receivables from provisional concentrate sales, net of fair value adjustment	4,350	1,332
Long-term investments - common shares held	309,757	164,753
Convertible note receivable	21,856	12,899
Total net financial assets measured at fair value	439,949	254,751
Investments in equity instruments designated at fair value through other comprehensive income [member]
Disclosure of fair value measurements of assets and liabilities [line items]
Long-term investments - common shares held	309,757	164,753
Level 1 [member]
Disclosure of fair value measurements of assets and liabilities [line items]
Cash and cash equivalents	103,986	75,767
Trade receivables from provisional concentrate sales, net of fair value adjustment	0
Convertible note receivable	0
Total net financial assets measured at fair value	413,743	240,520
Level 1 [member] | Investments in equity instruments designated at fair value through other comprehensive income [member]
Disclosure of fair value measurements of assets and liabilities [line items]
Long-term investments - common shares held	309,757	164,753
Level 2 [member]
Disclosure of fair value measurements of assets and liabilities [line items]
Cash and cash equivalents	0
Trade receivables from provisional concentrate sales, net of fair value adjustment	4,350	1,332
Convertible note receivable	0
Total net financial assets measured at fair value	4,350	1,332
Level 2 [member] | Investments in equity instruments designated at fair value through other comprehensive income [member]
Disclosure of fair value measurements of assets and liabilities [line items]
Long-term investments - common shares held	0
Level 3 [member]
Disclosure of fair value measurements of assets and liabilities [line items]
Cash and cash equivalents	0
Trade receivables from provisional concentrate sales, net of fair value adjustment	0
Convertible note receivable	21,856	12,899
Total net financial assets measured at fair value	21,856	$ 12,899
Level 3 [member] | Investments in equity instruments designated at fair value through other comprehensive income [member]
Disclosure of fair value measurements of assets and liabilities [line items]
Long-term investments - common shares held	$ 0

Financial Instruments - Summa_4

Financial Instruments - Summary of Sensitivity Analysis of Fair Value Measurement to Changes in Unobservable Inputs (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)
Interest rate, measurement input [member] | Kutcho convertible note [member]
Disclosure of sensitivity analysis of fair value measurement to changes in unobservable inputs [line items]
Increase In Fair Value Measurement Due To Reasonably Possible Increase In Unobservable Input	$ (515)
Decrease In Fair Value Measurement Due To Reasonably Possible Increase In Unobservable Input	542
Interest rate, measurement input [member] | Gold X Convertible Note [Member]
Disclosure of sensitivity analysis of fair value measurement to changes in unobservable inputs [line items]
Increase In Fair Value Measurement Due To Reasonably Possible Increase In Unobservable Input	(262)
Decrease In Fair Value Measurement Due To Reasonably Possible Increase In Unobservable Input	270
Volatility Measurement Input [Member] | Kutcho convertible note [member]
Disclosure of sensitivity analysis of fair value measurement to changes in unobservable inputs [line items]
Increase In Fair Value Measurement Due To Reasonably Possible Increase In Unobservable Input	72
Decrease In Fair Value Measurement Due To Reasonably Possible Increase In Unobservable Input	(41)
Volatility Measurement Input [Member] | Gold X Convertible Note [Member]
Disclosure of sensitivity analysis of fair value measurement to changes in unobservable inputs [line items]
Increase In Fair Value Measurement Due To Reasonably Possible Increase In Unobservable Input	191
Decrease In Fair Value Measurement Due To Reasonably Possible Increase In Unobservable Input	$ (172)

Revenue - Summary of Revenue (D

Revenue - Summary of Revenue (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Revenue [abstract]
Gold credit sales	$ 535,766	$ 431,618
Concentrate sales	5,279	9,575
Revenue from sale of gold	541,045	441,193
Silver credit sales	225,316	290,152
Concentrate sales	63,085	53,427
Revenue from sale of silver	288,401	343,579
Palladium credit sales	31,886	9,240
Total sales revenue	$ 861,332	$ 794,012
Gold
Gold credit sales	62.00%	54.00%
Concentrate sales	1.00%	1.00%
Revenue from sale	63.00%	55.00%
Silver
Silver credit sales	26.00%	37.00%
Concentrate sales	7.00%	7.00%
Revenue from sale	33.00%	44.00%
Palladium
Palladium credit sales	4.00%	1.00%
Total sales revenue	100.00%	100.00%

Revenue - Additional Informatio

Revenue - Additional Information (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)Contractoz	Dec. 31, 2018USD ($)Contractoz
Disclosure of revenue [line items]
Number of forward contracts outstanding | Contract	0	0
Outstanding provisionally priced sales of silver and gold	$ 8,000	$ 7,000
Ounces of silver sold relative to outstanding provisionally priced sales | oz	500,000	400,000
Ounces of gold sold relative to outstanding provisionally priced sales | oz		500
Increase or decrease in revenue associated with outstanding provisionally priced silver sales invoices for each one cent per ounce increase or decrease in the realized silver price	$ 4,600	$ 4,500
Increase or decrease in revenue associated with outstanding provisionally priced gold sales invoices for each one dollar per ounce increase or decrease in the realized gold price	$ 500
Customer A [member]
Disclosure of revenue [line items]
Risk Revenue	33.00%	29.00%
Customer B [member]
Disclosure of revenue [line items]
Risk Revenue	25.00%	22.00%
Customer C [member]
Disclosure of revenue [line items]
Risk Revenue		13.00%
Provisionally prices sales of silver and gold [member]
Disclosure of revenue [line items]
Fair value gain adjustment associated with embedded derivative	$ 500	$ 500

General and Administrative - Su

General and Administrative - Summary of General and Administrative Expense (Detail) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018
Salaries and benefits
Salaries and benefits, excluding PSUs		$ 13,840	$ 14,397
PSUs	[1]	17,174	9,517
Total salaries and benefits		31,014	23,914
Depreciation		1,903	1,057
Donations		2,946	2,610
Professional fees		2,496	8,559
Other		10,457	10,078
General and administrative before equity settled stock based compensation		48,816	46,218
Total equity settled stock based compensation	[2]	5,691	5,432
Total general and administrative		54,507	51,650
Employee stock options [member]
Salaries and benefits
Total equity settled stock based compensation		2,474	2,401
Restricted stock units [member]
Salaries and benefits
Total equity settled stock based compensation		$ 3,217	$ 3,031
[1]	The PSU accrual related to the anticipated fair value of the PSUs issued uses a weighted average performance factor of 184% during the year ended December 31, 2019 as compared to 141% during the comparable period of 2018.
[2]	Equity settled stock based compensation is a non-cash expense.

General and Administrative - _2

General and Administrative - Summary of General and Administrative Expense (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Significant non cash charges [abstract]
Average performance factor used to calculate the accrual related to the anticipated fair value of the PSUs issue	186.00%	141.00%

Other (Income) Expense - Summar

Other (Income) Expense - Summary of Other (Income) Expense (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Disclosure of other operating income [line items]
Interest income	$ (816)	$ (750)
Guarantee fees - Primero Revolving Credit Facility		(858)
Fees for contract amendments and reconciliations		(248)
Share of losses of associate	164	432
Impairment loss—investment in associate	1,649
Foreign exchange loss (gain)	1,028	(144)
Gain on disposal of mineral royalty interest	(2,929)	0
Interest and penalties related to CRA Settlement	(225)	4,317
Loss on fair value adjustment of share purchase warrants held	16	124
Other	(145)	153
Total other (income) expense	(274)	5,826
Kutcho [member]
Disclosure of other operating income [line items]
Share of losses of associate	164	432
Loss on fair value adjustment of Kutcho Convertible Note	1,043	2,878
Investments in equity instruments designated at fair value through other comprehensive income [member]
Disclosure of other operating income [line items]
Dividends received from equity investments designated as FVTOCI relating to investments		$ (78)
Dividends Received From Equity Investments Designated As FVTOCI Relating To Investments Disposed Of During The Period [Member]
Disclosure of other operating income [line items]
Dividends received from equity investments designated as FVTOCI relating to investments	$ (59)

Accounts Receivable - Summary o

Accounts Receivable - Summary of Accounts Receivable (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Trade and other receivables [abstract]
Trade receivables from provisional concentrate sales, net of fair value adjustment	$ 4,350	$ 1,332
Other accounts receivable	2,788	854
Total accounts receivable	$ 7,138	$ 2,186

Mineral Stream Interests - Sche

Mineral Stream Interests - Schedule of Mineral Stream Interests (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Disclosure Of Mineral Stream Interests [line items]
Beginning balance	$ 6,156,839
Ending balance	5,734,106	$ 6,156,839
Depletion	(256,826)	(252,287)
Impairment	(165,912)
Gold interests [member]
Disclosure Of Mineral Stream Interests [line items]
Beginning balance	3,656,056
Ending balance	3,497,235	3,656,056
Depletion	(158,816)	(146,319)
Gold interests [member] | Sudbury [member]
Disclosure Of Mineral Stream Interests [line items]
Beginning balance	366,463
Ending balance	344,043	366,463
Gold interests [member] | Salobo [member]
Disclosure Of Mineral Stream Interests [line items]
Beginning balance	2,706,060
Ending balance	2,605,257	2,706,060
Gold interests [member] | Constancia [member]
Disclosure Of Mineral Stream Interests [line items]
Beginning balance	117,547
Ending balance	110,406	117,547
Gold interests [member] | San Dimas [member]
Disclosure Of Mineral Stream Interests [line items]
Beginning balance	208,195
Ending balance	194,367	208,195
Gold interests [member] | Stillwater [member]
Disclosure Of Mineral Stream Interests [line items]
Beginning balance	236,432
Ending balance	229,994	236,432
Gold interests [member] | Other gold interests [member]
Disclosure Of Mineral Stream Interests [line items]
Beginning balance	21,359
Ending balance	13,168	21,359
Gold interests [member] | Cost [member]
Disclosure Of Mineral Stream Interests [line items]
Beginning balance	4,681,816	4,222,030
Additions (Reductions)	(5)	459,786
Ending balance	4,681,811	4,681,816
Gold interests [member] | Cost [member] | Sudbury [member]
Disclosure Of Mineral Stream Interests [line items]
Beginning balance	623,864	623,864
Ending balance	623,864	623,864
Gold interests [member] | Cost [member] | Salobo [member]
Disclosure Of Mineral Stream Interests [line items]
Beginning balance	3,059,876	3,059,876
Ending balance	3,059,876	3,059,876
Gold interests [member] | Cost [member] | Constancia [member]
Disclosure Of Mineral Stream Interests [line items]
Beginning balance	136,058	136,058
Ending balance	136,058	136,058
Gold interests [member] | Cost [member] | San Dimas [member]
Disclosure Of Mineral Stream Interests [line items]
Beginning balance	220,429
Additions (Reductions)		220,429
Ending balance	220,429	220,429
Gold interests [member] | Cost [member] | Stillwater [member]
Disclosure Of Mineral Stream Interests [line items]
Beginning balance	239,357
Additions (Reductions)		239,357
Ending balance	239,352	239,357
Gold interests [member] | Cost [member] | Other gold interests [member]
Disclosure Of Mineral Stream Interests [line items]
Beginning balance	402,232	402,232
Ending balance	402,232	402,232
Gold interests [member] | Accumulated Depletion & Impairment [member]
Disclosure Of Mineral Stream Interests [line items]
Beginning balance	(1,025,760)	(879,441)
Ending balance	(1,184,576)	(1,025,760)
Depletion	(158,816)	(146,319)
Gold interests [member] | Accumulated Depletion & Impairment [member] | Sudbury [member]
Disclosure Of Mineral Stream Interests [line items]
Beginning balance	(257,401)	(243,876)
Ending balance	(279,821)	(257,401)
Depletion	(22,420)	(13,525)
Gold interests [member] | Accumulated Depletion & Impairment [member] | Salobo [member]
Disclosure Of Mineral Stream Interests [line items]
Beginning balance	(353,816)	(251,144)
Ending balance	(454,619)	(353,816)
Depletion	(100,803)	(102,672)
Gold interests [member] | Accumulated Depletion & Impairment [member] | Constancia [member]
Disclosure Of Mineral Stream Interests [line items]
Beginning balance	(18,511)	(14,007)
Ending balance	(25,652)	(18,511)
Depletion	(7,141)	(4,504)
Gold interests [member] | Accumulated Depletion & Impairment [member] | San Dimas [member]
Disclosure Of Mineral Stream Interests [line items]
Beginning balance	(12,234)
Ending balance	(26,062)	(12,234)
Depletion	(13,828)	(12,234)
Gold interests [member] | Accumulated Depletion & Impairment [member] | Stillwater [member]
Disclosure Of Mineral Stream Interests [line items]
Beginning balance	(2,925)
Ending balance	(9,358)	(2,925)
Depletion	(6,433)	(2,925)
Gold interests [member] | Accumulated Depletion & Impairment [member] | Other gold interests [member]
Disclosure Of Mineral Stream Interests [line items]
Beginning balance	(380,873)	(370,414)
Ending balance	(389,064)	(380,873)
Depletion	(8,191)	(10,459)
Silver interests [member]
Disclosure Of Mineral Stream Interests [line items]
Beginning balance	1,847,668
Ending balance	1,759,392	1,847,668
Depletion	(88,291)	(101,935)
Silver interests [member] | Penasquito [member]
Disclosure Of Mineral Stream Interests [line items]
Beginning balance	388,722
Ending balance	374,702	388,722
Silver interests [member] | Antamina [member]
Disclosure Of Mineral Stream Interests [line items]
Beginning balance	710,077
Ending balance	668,810	710,077
Silver interests [member] | Constancia [member]
Disclosure Of Mineral Stream Interests [line items]
Beginning balance	246,231
Ending balance	228,187	246,231
Silver interests [member] | Other silver interests [member]
Disclosure Of Mineral Stream Interests [line items]
Beginning balance	502,638
Ending balance	487,693	502,638
Silver interests [member] | Cost [member]
Disclosure Of Mineral Stream Interests [line items]
Beginning balance	3,010,956	3,201,085
Additions (Reductions)	15	202
Disposal		(190,331)
Ending balance	3,010,971	3,010,956
Silver interests [member] | Cost [member] | San Dimas [member]
Disclosure Of Mineral Stream Interests [line items]
Beginning balance		190,331
Disposal		(190,331)
Silver interests [member] | Cost [member] | Penasquito [member]
Disclosure Of Mineral Stream Interests [line items]
Beginning balance	524,626	524,626
Ending balance	524,626	524,626
Silver interests [member] | Cost [member] | Antamina [member]
Disclosure Of Mineral Stream Interests [line items]
Beginning balance	900,343	900,343
Ending balance	900,343	900,343
Silver interests [member] | Cost [member] | Constancia [member]
Disclosure Of Mineral Stream Interests [line items]
Beginning balance	302,948	302,948
Ending balance	302,948	302,948
Silver interests [member] | Cost [member] | Other silver interests [member]
Disclosure Of Mineral Stream Interests [line items]
Beginning balance	1,283,039	1,282,837
Additions (Reductions)	15	202
Ending balance	1,283,054	1,283,039
Silver interests [member] | Accumulated Depletion & Impairment [member]
Disclosure Of Mineral Stream Interests [line items]
Beginning balance	(1,163,288)	(1,120,397)
Disposal		59,044
Ending balance	(1,251,579)	(1,163,288)
Depletion	(88,291)	(101,935)
Silver interests [member] | Accumulated Depletion & Impairment [member] | San Dimas [member]
Disclosure Of Mineral Stream Interests [line items]
Beginning balance		(55,469)
Disposal		59,044
Depletion		(3,575)
Silver interests [member] | Accumulated Depletion & Impairment [member] | Penasquito [member]
Disclosure Of Mineral Stream Interests [line items]
Beginning balance	(135,904)	(121,376)
Ending balance	(149,924)	(135,904)
Depletion	(14,020)	(14,528)
Silver interests [member] | Accumulated Depletion & Impairment [member] | Antamina [member]
Disclosure Of Mineral Stream Interests [line items]
Beginning balance	(190,266)	(142,705)
Ending balance	(231,533)	(190,266)
Depletion	(41,267)	(47,561)
Silver interests [member] | Accumulated Depletion & Impairment [member] | Constancia [member]
Disclosure Of Mineral Stream Interests [line items]
Beginning balance	(56,717)	(41,145)
Ending balance	(74,761)	(56,717)
Depletion	(18,044)	(15,572)
Silver interests [member] | Accumulated Depletion & Impairment [member] | Other silver interests [member]
Disclosure Of Mineral Stream Interests [line items]
Beginning balance	(780,401)	(759,702)
Ending balance	(795,361)	(780,401)
Depletion	(14,960)	(20,699)
Palladium interest [member]
Disclosure Of Mineral Stream Interests [line items]
Beginning balance	259,693
Ending balance	249,969	259,693
Palladium interest [member] | Stillwater [member]
Disclosure Of Mineral Stream Interests [line items]
Beginning balance	259,693
Ending balance		259,693
Palladium interest [member] | Cost [member] | Stillwater [member]
Disclosure Of Mineral Stream Interests [line items]
Beginning balance	263,726
Additions (Reductions)	(5)	263,726
Ending balance	263,721	263,726
Palladium interest [member] | Cost [member] | Stillwater [member]
Disclosure Of Mineral Stream Interests [line items]
Additions (Reductions)	(5)
Palladium interest [member] | Accumulated Depletion & Impairment [member] | Stillwater [member]
Disclosure Of Mineral Stream Interests [line items]
Beginning balance	(4,033)
Ending balance	(13,752)	(4,033)
Depletion	(9,719)	(4,033)
Cobalt Interests [member]
Disclosure Of Mineral Stream Interests [line items]
Beginning balance	393,422
Ending balance	227,510	393,422
Cobalt Interests [member] | Cost [member]
Disclosure Of Mineral Stream Interests [line items]
Beginning balance	393,422
Additions (Reductions)		393,422
Ending balance	393,422	393,422
Cobalt Interests [member] | Accumulated Depletion & Impairment [member]
Disclosure Of Mineral Stream Interests [line items]
Ending balance	(165,912)
Impairment	(165,912)
Mineral Stream Interests [member]
Disclosure Of Mineral Stream Interests [line items]
Depletion	(256,826)	(252,287)
Impairment	(165,912)
Mineral Stream Interests [member] | Cost [member]
Disclosure Of Mineral Stream Interests [line items]
Beginning balance	8,349,920	7,423,115
Additions (Reductions)	5	1,117,136
Disposal		(190,331)
Ending balance	8,349,925	8,349,920
Mineral Stream Interests [member] | Accumulated Depletion & Impairment [member]
Disclosure Of Mineral Stream Interests [line items]
Beginning balance	(2,193,081)	(1,999,838)
Disposal		59,044
Ending balance	(2,615,819)	(2,193,081)
Depletion	(256,826)	$ (252,287)
Impairment	$ (165,912)

Mineral Stream Interests - Sc_2

Mineral Stream Interests - Schedule of Mineral Stream Interests (Parenthetical) (Detail) - Accumulated impairment [member] - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Gold interests [member] | Sudbury [member]
Disclosure Of Mineral Stream Interests [line items]
Cumulative impairment charges	$ 120	$ 120
Gold interests [member] | 777 [member]
Disclosure Of Mineral Stream Interests [line items]
Cumulative impairment charges	151	151
Silver interests [member] | Keno Hill [member]
Disclosure Of Mineral Stream Interests [line items]
Cumulative impairment charges	11	11
Silver interests [member] | Pascua-Lama [member]
Disclosure Of Mineral Stream Interests [line items]
Cumulative impairment charges	338	338
Silver interests [member] | 777 [member]
Disclosure Of Mineral Stream Interests [line items]
Cumulative impairment charges	64	$ 64
Voisey's Bay [member] | Cobalt Interests [member]
Disclosure Of Mineral Stream Interests [line items]
Cumulative impairment charges	$ 166

Mineral Stream Interests - Clas

Mineral Stream Interests - Classification of Mining Interest (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Gold interests [member]
Disclosure Of Mineral Stream Interests [line items]
Depletable	$ 2,774,694	$ 2,920,085
Non-Depletable	722,541	735,971
Total	3,497,235	3,656,056
Silver interests [member]
Disclosure Of Mineral Stream Interests [line items]
Depletable	905,501	956,242
Non-Depletable	853,891	891,426
Total	1,759,392	1,847,668
Mineral Stream Interests [member]
Disclosure Of Mineral Stream Interests [line items]
Depletable	3,918,680	4,124,626
Non-Depletable	1,815,426	2,032,213
Total	5,734,106	6,156,839
Voisey's Bay [member] | Cobalt Interests [member]
Disclosure Of Mineral Stream Interests [line items]
Depletable	0
Non-Depletable	227,510	393,422
Total	227,510	393,422
Penasquito [member] | Silver interests [member]
Disclosure Of Mineral Stream Interests [line items]
Depletable	287,493	284,194
Non-Depletable	87,209	104,528
Total	374,702	388,722
Antamina [member] | Silver interests [member]
Disclosure Of Mineral Stream Interests [line items]
Depletable	322,148	353,679
Non-Depletable	346,662	356,398
Total	668,810	710,077
Constancia [member] | Silver interests [member]
Disclosure Of Mineral Stream Interests [line items]
Depletable	212,173	230,983
Non-Depletable	16,014	15,248
Total	228,187	246,231
Other silver interests [member] | Silver interests [member]
Disclosure Of Mineral Stream Interests [line items]
Depletable	83,687	87,386
Non-Depletable	404,006	415,252
Total	487,693	502,638
Sudbury [member] | Gold interests [member]
Disclosure Of Mineral Stream Interests [line items]
Depletable	290,841	308,041
Non-Depletable	53,202	58,422
Total	344,043	366,463
Salobo [member] | Gold interests [member]
Disclosure Of Mineral Stream Interests [line items]
Depletable	2,078,666	2,171,292
Non-Depletable	526,591	534,768
Total	2,605,257	2,706,060
Constancia [member] | Gold interests [member]
Disclosure Of Mineral Stream Interests [line items]
Depletable	101,263	108,403
Non-Depletable	9,143	9,144
Total	110,406	117,547
San Dimas [member] | Gold interests [member]
Disclosure Of Mineral Stream Interests [line items]
Depletable	87,593	101,421
Non-Depletable	106,774	106,774
Total	194,367	208,195
Stillwater [member] | Gold interests [member]
Disclosure Of Mineral Stream Interests [line items]
Depletable	203,163	209,569
Non-Depletable	26,831	26,863
Total	229,994	236,432
Stillwater [member] | Palladium interest [member]
Disclosure Of Mineral Stream Interests [line items]
Depletable	238,485	248,299
Non-Depletable	11,484	11,394
Total	249,969	259,693
Other gold interests [member] | Gold interests [member]
Disclosure Of Mineral Stream Interests [line items]
Depletable	13,168	21,359
Total	$ 13,168	$ 21,359

Mineral Stream Interests - Addi

Mineral Stream Interests - Additional Information (Detail) $ in Thousands		Jul. 16, 2018USD ($)oz	May 10, 2018USD ($)ozshares	Sep. 30, 2018USD ($)	Dec. 31, 2019USD ($)$ / ozoz	Dec. 31, 2018USD ($)$ / ozshares	Jun. 11, 2018USD ($)oz
Disclosure Of Mineral Stream Interests [line items]
Gain on disposal of silver streaming interest					$ 0	$ 245,715
Upfront cash consideration paid	[1]				$ 31,000
Restructuring of san dimas precious metal purchase agreement [member] | Silver and gold interests [member]
Disclosure Of Mineral Stream Interests [line items]
Exchange ratio description					If the average gold to silver price ratio decreases to less than 50:1 or increases to more than 90:1 for a period of 6 months or more, then the “70” shall be revised to “50” or “90”, as the case may be, until such time as the average gold to silver price ratio is between 50:1 to 90:1 for a period of 6 months or more in which event the “70” shall be reinstated.
First Majestic [member]
Disclosure Of Mineral Stream Interests [line items]
Number of common shares received | shares			20,914,590
Fair value of shares received			$ 151,000
Gain on disposal of silver streaming interest					$ 500
First Majestic [member] | Restructuring of san dimas precious metal purchase agreement [member]
Disclosure Of Mineral Stream Interests [line items]
Number of common shares received | shares			20,914,590
Goldcorp Inc. [member]
Disclosure Of Mineral Stream Interests [line items]
Cash consideration received upon disposal of mineral stream interest						10,000
San Dimas [member]
Disclosure Of Mineral Stream Interests [line items]
Cash consideration received upon disposal of mineral stream interest						$ 220,000
San Dimas [member] | First Majestic [member]
Disclosure Of Mineral Stream Interests [line items]
Number of common shares received | shares						20,914,590
Fair value of shares received						$ 151,000
Silver interests [member] | Goldcorp Inc. [member] | Restructuring of san dimas precious metal purchase agreement [member]
Disclosure Of Mineral Stream Interests [line items]
Cash consideration received upon terminating silver delivery guarantee			$ 10,000
Silver interests [member] | San Dimas [member] | Restructuring of san dimas precious metal purchase agreement [member]
Disclosure Of Mineral Stream Interests [line items]
Cash consideration received upon disposal of mineral stream interest			$ 220,000
Gain on disposal of silver streaming interest				$ 246,000
Silver [member] | San Dimas [member]
Disclosure Of Mineral Stream Interests [line items]
Attributable Payable Production to be Purchased			100.00%		0.00%
Number of silver ounces to be delivered before sharing mechanism applies | oz			6,000,000
Attributable Payable Production to be Purchased there after			50.00%
Silver [member] | Stillwater [member]
Disclosure Of Mineral Stream Interests [line items]
Attributable Payable Production to be Purchased					0.00%
Gold [member] | San Dimas [member]
Disclosure Of Mineral Stream Interests [line items]
Attributable Payable Production to be Purchased there after						25.00%
Upfront cash consideration paid						$ 220,000
Percentage of silver production to be Converted to gold and purchased						25.00%
Gold to silver exchange ratio					70	70
Per Ounce Cash Payment | $ / oz					606	600
Gold [member] | Stillwater [member]
Disclosure Of Mineral Stream Interests [line items]
Attributable Payable Production to be Purchased					100.00%
Fixed payable rate		99.00%
Percentage of production		100.00%
Per ounce cash payment as a percentage of the spot price of metal delivered after upfront deposit reduced to NIL		18.00%
Gold and palladium [member] | Stillwater [member]
Disclosure Of Mineral Stream Interests [line items]
Upfront cash consideration paid		$ 500,000
Palladium [member] | San Dimas [member]
Disclosure Of Mineral Stream Interests [line items]
Attributable Payable Production to be Purchased					0.00%
Palladium [member] | Stillwater [member]
Disclosure Of Mineral Stream Interests [line items]
Attributable Payable Production to be Purchased					4.50%
Fixed payable rate		99.60%
Percentage of production		4.50%
Number of ounces to be delivered before first step down in entitlement percentage | oz		375,000			375,000
Percentage of production to be purchased after first step down		2.25%			2.25%
Number of ounces to be delivered before second step down in entitlement percentage | oz		550,000			550,000
Percentage of production to be purchased after second step down		1.00%			1.00%
Per ounce cash payment as a percentage of the spot price of metal delivered		18.00%			18.00%
Per ounce cash payment as a percentage of the spot price of metal delivered after upfront deposit reduced to NIL		22.00%			22.00%
Cobalt [member] | Voisey's Bay [member]
Disclosure Of Mineral Stream Interests [line items]
Attributable Payable Production to be Purchased							42.40%
Upfront cash consideration paid							$ 390,000
Cobalt pounds to be delivered before entitlement step down takes effect | oz							31,000,000
Percentage of metal production at the mine which WPM is entitled to after step down							21.20%
Per pound cash payment as a percentage of the spot price of metal delivered							18.00%
Percentage of spot price of metal thereafter							22.00%
Fixed payable rate							93.30%
Cobalt [member] | San Dimas [member]
Disclosure Of Mineral Stream Interests [line items]
Attributable Payable Production to be Purchased					0.00%
Cobalt [member] | Stillwater [member]
Disclosure Of Mineral Stream Interests [line items]
Attributable Payable Production to be Purchased					0.00%
[1]	Expressed in thousands of United States dollars; excludes closing costs and capitalized interest, where applicable.

Mineral Stream Interests - Disc

Mineral Stream Interests - Disclosure of Gain on Disposal of Mineral Stream Interest (Detail) - USD ($) $ in Thousands	May 10, 2018	Dec. 31, 2018
First Majestic [member]
Disclosure Of Mineral Stream Interests [line items]
Fair value of First Majestic shares received	$ 151,000
Goldcorp Inc. [member]
Disclosure Of Mineral Stream Interests [line items]
Cash received		$ 10,000
San Dimas [member]
Disclosure Of Mineral Stream Interests [line items]
Cash received		220,000
Total net proceeds from the disposal of the San Dimas SPA		381,000
Less: carrying value plus closing costs		(135,285)
Gain on disposal of the San Dimas SPA		245,715
San Dimas [member] | First Majestic [member]
Disclosure Of Mineral Stream Interests [line items]
Fair value of First Majestic shares received		151,000
San Dimas [member] | Goldcorp Inc. [member]
Disclosure Of Mineral Stream Interests [line items]
Fee from Goldcorp in exchange for release from the guarantee of deliveries relative to San Dimas		$ 10,000

Impairment of Mineral Stream _3

Impairment of Mineral Stream Interests - Schedule of Impairment of Mineral Stream Interests (Detail) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2019
Disclosure of Impairment Loss and Reversal of Impairment Loss [Line Items]
Total impairment charges		$ 165,912
Voisey's Bay [member]
Disclosure of Impairment Loss and Reversal of Impairment Loss [Line Items]
Total impairment charges	$ 166,000	$ 165,912

Impairment of Mineral Stream _4

Impairment of Mineral Stream Interests - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	Jun. 30, 2019	Dec. 31, 2019	Jun. 18, 2019
Disclosure of Impairment Loss and Reversal of Impairment Loss [Line Items]
Impairment charge		$ 165,912
Cobalt Twenty Seven [member] | Pala Investments Limited [member]
Disclosure of Impairment Loss and Reversal of Impairment Loss [Line Items]
Acquisition of issued and outstanding common shares of comparator company			100.00%
Voisey's Bay [member]
Disclosure of Impairment Loss and Reversal of Impairment Loss [Line Items]
Precious metal purchase agreement carrying value	$ 393,000
Recoverable amount	227,000
Impairment charge	$ 166,000	$ 165,912
Discount rate		7.00%
Market price of cobalt		$ 14.83

Early Deposit Mineral Stream _3

Early Deposit Mineral Stream Interests - Summary of Early Deposit Mineral Stream Interests (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)
Disclosure Of Mineral Stream Interests [line items]
Upfront Consideration Paid to Date	$ 31,000	[1]
Upfront Consideration to be Paid	327,500	[1],[2]
Total Upfront Consideration	$ 358,500	[1]
Cotabambas [member]
Disclosure Of Mineral Stream Interests [line items]
Name of mine owner	Panoro
Location of Mine	Peru
Upfront Consideration Paid to Date	$ 8,500	[1]
Upfront Consideration to be Paid	131,500	[1],[2]
Total Upfront Consideration	$ 140,000	[1]
Gold	25.00%	[3]
Silver	100.00%	[3]
Term of Agreement	Life of Mine
Toroparu [member]
Disclosure Of Mineral Stream Interests [line items]
Name of mine owner	Gold X
Location of Mine	Guyana
Upfront Consideration Paid to Date	$ 15,500	[1]
Upfront Consideration to be Paid	138,000	[1],[2]
Total Upfront Consideration	$ 153,500	[1]
Gold	10.00%
Silver	50.00%
Term of Agreement	Life of Mine
Kutcho [member]
Disclosure Of Mineral Stream Interests [line items]
Name of mine owner	Kutcho
Location of Mine	Canada
Upfront Consideration Paid to Date	$ 7,000	[1]
Upfront Consideration to be Paid	58,000	[1],[2]
Total Upfront Consideration	$ 65,000	[1]
Gold	100.00%	[4]
Silver	100.00%	[4]
Term of Agreement	Life of Mine
[1]	Expressed in thousands of United States dollars; excludes closing costs and capitalized interest, where applicable.
[2]	Please refer to Note 29 for details of when the remaining upfront consideration to be paid becomes due.
[3]	Once 90 million silver equivalent ounces attributable to Wheaton have been produced, the attributable production to be purchased will decrease to 16.67% of gold production and 66.67% of silver production for the life of mine.
[4]	Once 51,000 ounces of gold and 5.6 million ounces of silver have been delivered to Wheaton, the stream will decrease to 66.67% of gold and silver production for the life of mine.

Early Deposit Mineral Stream _4

Early Deposit Mineral Stream Interests - Summary of Early Deposit Mineral Stream Interests (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2019oz
Cotabambas [member]
Disclosure Of Mineral Stream Interests [line items]
Percentage of silver production at the mine which WPM is entitled to after step down	66.67%
Percentage of gold production at the mine which WPM is entitled to after step down	16.67%
Kutcho [member]
Disclosure Of Mineral Stream Interests [line items]
Percentage of silver production at the mine which WPM is entitled to after step down	66.67%
Gold [member] | Kutcho [member]
Disclosure Of Mineral Stream Interests [line items]
Gold ounces to be delivered before entitlement step down takes effect	51,000
Silver [member] | Cotabambas [member]
Disclosure Of Mineral Stream Interests [line items]
Silver Equivalent ounces to be delivered before entitlement step down takes effect	90,000,000
Silver [member] | Kutcho [member]
Disclosure Of Mineral Stream Interests [line items]
Silver ounces to be delivered before entitlement step down takes effect	5,600,000

Mineral Royalty Interest - Addi

Mineral Royalty Interest - Additional Information (Detail) - USD ($)	Aug. 07, 2019	Aug. 07, 2014	Dec. 31, 2019	Dec. 31, 2018
Disclosure Of Royalty Arrangements [line items]
Gains on disposals of mineral royalty interest			$ 2,929,000	$ 0
Metates Properties [member]
Disclosure Of Royalty Arrangements [line items]
Net smelter return royalty percentage	0.50%	1.50%
Upfront cash payment for Royalty interest	$ 9,000,000	$ 9,000,000
Ratio of royalty which may be reacquired by the Mine Operator	66.66%
Net smelter return royalty percentage which may be repurchased	1.00%
Total consideration owed by Mine Operator upon election of reacquisition of royalty interest	$ 9,000,000
Gains on disposals of mineral royalty interest			3,000,000
Revenues recognized in royalty agreement			0
Depletion in royalty agreement			$ 0

Investment in Associate - Addit

Investment in Associate - Additional Information (Detail) $ in Thousands, $ in Millions	Jun. 06, 2019CAD ($)shares	Dec. 31, 2019USD ($)shares	Dec. 31, 2018USD ($)
Disclosure of associates and joint ventures [line items]
Total consideration | $		$ 133	$ 0
Amount advanced in exchange for convertible note receivable | $		21,856	$ 12,899
Kutcho [member]
Disclosure of associates and joint ventures [line items]
Number of shares of associate owned | shares	7,153,846
Number of share purchase warrants of associate owned | shares	4,076,923
Total consideration	$ 0.2	$ 133
Amount advanced in exchange for convertible note receivable | $	$ 20
Coupon rate on convertible note receivable	10.00%
Number of shares issued and outstanding by associate | shares		68,247,628
Undiluted ownership percentage of associate		10.00%
Fully diluted ownership percentage of associate		29.00%
Non-fully diluted potential ownership percentage of associate		37.00%
Number of shares of associate acquired | shares	1,000,000
Number of share purchase warrants of associate acquired | shares	1,000,000
Recoverable amount of investment | $		$ 1,000
Impairment charge | $		$ 1,649

Investment in Associate - Discl

Investment in Associate - Disclosure of Investment in Associate (Detail) $ in Thousands, $ in Millions	Jun. 06, 2019CAD ($)	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)
Disclosure of associates and joint ventures [line items]
Beginning Balance		$ 2,562
Amount invested		133	$ 0
Share of losses		(164)	(432)
Ending Balance		882	2,562
Kutcho [member]
Disclosure of associates and joint ventures [line items]
Beginning Balance		2,562	2,994
Amount invested	$ 0.2	133
Share of losses		(164)	(432)
Impairment		(1,649)
Ending Balance		$ 882	$ 2,562

Convertible Notes Receivable -

Convertible Notes Receivable - Additional Information (Detail) $ / shares in Units, $ in Thousands, $ in Millions	Dec. 24, 2019USD ($)	Nov. 27, 2019	Dec. 14, 2017USD ($)	Dec. 31, 2019USD ($)	Dec. 24, 2019$ / shares	Jun. 06, 2019CAD ($)	Dec. 31, 2018USD ($)	Dec. 14, 2017CAD ($)$ / shares
Convertible notes receivable [line items]
Amount advanced in exchange for convertible note receivable				$ 21,856			$ 12,899
Gold X Convertible Note [Member]
Convertible notes receivable [line items]
Interest rate				10.00%
Gold X Mining Corp [Member]
Convertible notes receivable [line items]
Amount advanced in exchange for convertible note receivable	$ 10,000
Coupon rate on convertible note receivable	10.00%
Convertible note original term to maturity	3 year
Option to defer interest payment criteria	Gold X has the option to defer the interest payments until December 4, 2022, being the maturity date.
Conversion price per share | $ / shares					$ 3.20
Proportion of ownership interest in joint venture owned by mine operator				100.00%
Convertible notes receivable face value	$ 20,000
Interest rate	10.00%
Kutcho [member]
Convertible notes receivable [line items]
Amount advanced in exchange for convertible note receivable						$ 20
Coupon rate on convertible note receivable						10.00%
Convertible note receivable [member] | Kutcho [member]
Convertible notes receivable [line items]
Amount advanced in exchange for convertible note receivable			$ 16,000					$ 20
Coupon rate on convertible note receivable			10.00%					10.00%
Interest rate charged On deferred interest		15.00%
Convertible note original term to maturity			7 year
Maximum interest payment deferral period			4 years
Option to defer interest payment criteria			Kutcho elected to defer the first three interest payments until December 31, 2019 and, as per an amendment entered into on November 27, 2019, can defer this interest in addition to the fourth interest payment for an additional period not to exceed 4 years
Conversion price per share | $ / shares								$ 0.8125
Minimum period required for early repayment			24 months
Prepayment cash penalty as a percentage of the outstanding loan amount if pre-paid on or after 24 months until 36 months			25.00%					25.00%
Loan amount outstanding period for covering 25% of prepayment penalty			After 24 months until 36 months
Prepayment cash penalty as a percentage of the outstanding loan amount if pre-paid on or after 36 months until 60 months			20.00%					20.00%
Loan amount outstanding period for covering 20% of prepayment penalty			After 36 months until 60 months
Prepayment cash penalty as a percentage of the outstanding loan amount if pre-paid on or after 60 months until maturity			15.00%					15.00%
Loan amount outstanding period for covering 15% of prepayment penalty			After 60 months until maturity

Convertible Notes Receivable _2

Convertible Notes Receivable - Schedule of Company's Convertible Note Receivable (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Convertible notes receivable [line items]
Beginning balance		$ 15,777
Amount advanced	$ 10,000
Fair value gain (loss) reflected in net earnings	(1,043)	(2,878)
Ending balance	21,856	12,899
Gold X
Convertible notes receivable [line items]
Amount advanced	10,000
Fair value gain (loss) reflected in net earnings	19
Ending balance	10,019
Convertible note receivable [member] | Kutcho [member]
Convertible notes receivable [line items]
Beginning balance		15,777
Amount advanced	0
Fair value gain (loss) reflected in net earnings	(1,062)	(2,878)
Ending balance	$ 11,837	$ 12,899

Long-Term Equity Investments -

Long-Term Equity Investments - Summary of Common Shares Held (Detail) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018
Long term investments - common shares held [line items]
Fair value		$ 309,757	$ 164,753
Fair value adjustment gains (losses) included in OCI	[1]	161,936	(39,985)
Realized gain on disposal		$ (7,282)	$ 34,061
Bear Creek [member]
Long term investments - common shares held [line items]
Shares owned		13,264,305	13,264,305
Percentage of outstanding shares owned		12.84%	13.00%
Fair value		$ 27,983	$ 10,112
Fair value adjustment gains (losses) included in OCI		17,871	$ (11,247)
Realized gain on disposal		$ 0
Sabina [member]
Long term investments - common shares held [line items]
Shares owned		11,700,000	11,700,000
Percentage of outstanding shares owned		3.95%	4.00%
Fair value		$ 17,296	$ 10,549
Fair value adjustment gains (losses) included in OCI		6,747	(10,622)
Realized gain on disposal		$ 0
Arizona Mining [member]
Long term investments - common shares held [line items]
Fair value adjustment gains (losses) included in OCI			20,153
Realized gain on disposal			$ 34,061
First Majestic [member]
Long term investments - common shares held [line items]
Shares owned		20,239,590	20,914,590
Percentage of outstanding shares owned		9.73%	11.00%
Fair value		$ 248,137	$ 123,187
Fair value adjustment gains (losses) included in OCI		130,346	(27,813)
Realized gain on disposal		521
Other investments [member]
Long term investments - common shares held [line items]
Fair value		16,341	20,905
Fair value adjustment gains (losses) included in OCI		6,972	$ (10,456)
Realized gain on disposal		$ (7,803)
[1]	LTIs = long-term investments – common shares held.

Long-Term Equity Investments _2

Long-Term Equity Investments - Additional Information (Detail) $ in Thousands, $ in Millions	May 17, 2019CAD ($)shares	Aug. 10, 2018USD ($)	Aug. 10, 2018CAD ($)	Jul. 17, 2018CAD ($)shares	May 10, 2018USD ($)shares	Dec. 31, 2019USD ($)shares	Dec. 31, 2018USD ($)	Apr. 25, 2018USD ($)
Long term investments - common shares held [line items]
Fair value						$ 309,757	$ 164,753
Other cash receipts from sales of equity or debt instruments of other entities, classified as investing activities						17,824	47,734
Disposition of investments, Realised gain						0	245,715
Payment for acquiring equity or debt instruments of other entities						909	5,863
First Majestic [member]
Long term investments - common shares held [line items]
Number of common shares received | shares					20,914,590
Fair value of shares received					$ 151,000
Fair value						248,137	$ 123,187
Other cash receipts from sales of equity or debt instruments of other entities, classified as investing activities						5,000
Disposition of investments, Realised gain						$ 500
Percentage of outstanding shares owned						9.73%	11.00%
Number of shares disposed off | shares						675,000
Tradewind Markets, Inc [member]
Long term investments - common shares held [line items]
Fair value								$ 1,000
Adventus Zinc [member]
Long term investments - common shares held [line items]
Fair value				$ 6
Number of shares acquired | shares	1,371,711			7,093,392
Percentage of issued and outstanding common shares				9.99%
Payment for acquiring equity or debt instruments of other entities	$ 1
Adventus Zinc [member] | Other intangible assets [member]
Long term investments - common shares held [line items]
Price paid for right of first refusal on new streaming agreements				$ 1
Arizona Mining Inc. [member]
Long term investments - common shares held [line items]
Other cash receipts from sales of equity or debt instruments of other entities, classified as investing activities		$ 48,000	$ 62
Disposition of investments, Realised gain		$ 34,000
Other LongTerm Investments [Member]
Long term investments - common shares held [line items]
Other cash receipts from sales of equity or debt instruments of other entities, classified as investing activities						$ 13,000
Disposition of investments, Realised loss						$ 8,000

Property Plant and Equipment -

Property Plant and Equipment - Summary of Property Plant and Equipment (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)
Statement [Line Items]
Balance-January 1,2019	$ 3,626
Balance-December 31, 2019	7,311
Leasehold improvements [member]
Statement [Line Items]
Balance-December 31, 2019	1,862
Right-of-use assets [member]
Statement [Line Items]
Balance-December 31, 2019	4,034
Other
Statement [Line Items]
Balance-December 31, 2019	1,415
At Cost [member]
Statement [Line Items]
Balance-January 1,2019	7,696
Additions upon adoption of IFRS 16	4,679
Additions	615
Disposals	(36)
Balance-December 31, 2019	12,954
At Cost [member] | Leasehold improvements [member]
Statement [Line Items]
Balance-January 1,2019	4,378
Additions	9
Disposals	(7)
Balance-December 31, 2019	4,380
At Cost [member] | Right-of-use assets [member]
Statement [Line Items]
Additions upon adoption of IFRS 16	4,679
Additions	59
Balance-December 31, 2019	4,738
At Cost [member] | Other
Statement [Line Items]
Balance-January 1,2019	3,318
Additions	547
Disposals	(29)
Balance-December 31, 2019	3,836
Accumulated depreciation and amortisation [member]
Statement [Line Items]
Balance-January 1,2019	(4,070)
Disposals	36
Depreciation	(1,609)
Balance-December 31, 2019	(5,643)
Accumulated depreciation and amortisation [member] | Leasehold improvements [member]
Statement [Line Items]
Balance-January 1,2019	(2,024)
Disposals	7
Depreciation	(501)
Balance-December 31, 2019	(2,518)
Accumulated depreciation and amortisation [member] | Right-of-use assets [member]
Statement [Line Items]
Depreciation	(704)
Balance-December 31, 2019	(704)
Accumulated depreciation and amortisation [member] | Other
Statement [Line Items]
Balance-January 1,2019	(2,046)
Disposals	29
Depreciation	(404)
Balance-December 31, 2019	$ (2,421)

Credit Facilities - Bank Debt (

Credit Facilities - Bank Debt (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Disclosure Of Bank Debt Facilities
Gross bank debt outstanding	$ 874,500	$ 1,264,000
Revolving Term Loan [member]
Disclosure Of Bank Debt Facilities
Current portion	0
Long-term portion	874,500	1,264,000
Gross bank debt outstanding	$ 874,500	$ 1,264,000

Credit Facilities - Bank Debt_2

Credit Facilities - Bank Debt (Parenthetical) (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Disclosure Of Bank Debt Facilities
Unamortized debt issue	$ 5,154	$ 5,507
Revolving Term Loan [member]
Disclosure Of Bank Debt Facilities
Unamortized debt issue	$ 5,000

Credit Facilities - Additional

Credit Facilities - Additional Information (Detail) $ in Thousands, $ in Millions	Feb. 27, 2019USD ($)	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)	Mar. 15, 2018CAD ($)	Mar. 15, 2017CAD ($)	Mar. 15, 2016CAD ($)
Disclosure Of Bank Debt Facilities
Amount		$ 874,500	$ 1,264,000
Revolving Term Loan [member]
Disclosure Of Bank Debt Facilities
Information about covenants imposed by lenders on credit facilities		The Company’s Revolving Facility has financial covenants which require the Company to maintain: (i) a net debt to tangible net worth ratio of less than or equal to 0.75:1; and (ii) an interest coverage ratio of greater than or equal to 3.00:1. Only cash interest expenses are included for the purposes of calculating the interest coverage ratio. The Company is in compliance with these debt covenants as at December 31, 2019.
Maximum net debt to tangible net worth ratio		75.00%
Minimum interest coverage ratio		3
Amount		$ 874,500	$ 1,264,000
Revolving Term Loan [member] | Extension of revolving term loan [member]
Disclosure Of Bank Debt Facilities
Credit facility extension fees	$ 1,000
Maximum available credit under revolving term loan		$ 2,000,000
Revolving Term Loan [member] | Bottom of range [member]
Disclosure Of Bank Debt Facilities
Stand-by fees rate charged for undrawn facilities		0.20%
Revolving Term Loan [member] | Bottom of range [member] | LIBOR [member]
Disclosure Of Bank Debt Facilities
Basis spread		1.00%
Revolving Term Loan [member] | Bottom of range [member] | Bank of Nova Scotia Base Rate [member]
Disclosure Of Bank Debt Facilities
Basis spread		0.00%
Revolving Term Loan [member] | Top of range [member]
Disclosure Of Bank Debt Facilities
Stand-by fees rate charged for undrawn facilities		0.41%
Revolving Term Loan [member] | Top of range [member] | LIBOR [member]
Disclosure Of Bank Debt Facilities
Basis spread		2.05%
Revolving Term Loan [member] | Top of range [member] | Bank of Nova Scotia Base Rate [member]
Disclosure Of Bank Debt Facilities
Basis spread		1.05%
Letter of Guarantee in favour of Her Majesty the Queen in Right of Canada [member]
Disclosure Of Bank Debt Facilities
Annual fee associated with Letter of Credit		100.00%
Amount				$ 10	$ 11	$ 192
Letter of credit, cancellation date		Dec. 18, 2018

Credit Facilities - Summary of

Credit Facilities - Summary of Lease Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Presentation of leases for lessee [abstract]
Current portion	$ 724	$ 0
Long-term portion	3,528	$ 0
Total lease liabilities	$ 4,252

Credit Facilities - Summary o_2

Credit Facilities - Summary of Lease Maturities (Detail) $ in Thousands	Dec. 31, 2019USD ($)
Disclosure of Lease liabilities [Line Items]
Total lease liabilities	$ 4,252
Not later than 1 year [member]
Disclosure of Lease liabilities [Line Items]
Total lease liabilities	724
Later than 1 year and not later than 5 years
Disclosure of Lease liabilities [Line Items]
Total lease liabilities	3,294
Later than 5 years [member]
Disclosure of Lease liabilities [Line Items]
Total lease liabilities	$ 234

Credit Facilities - Summary o_3

Credit Facilities - Summary of Company's Finance Costs (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Disclosure of Finance Cost [abstract]
Average principal outstanding during period	$ 1,099,846	$ 1,005,222
Average effective interest rate during period	4.07%	3.57%
Total interest expense incurred during period	$ 44,767	$ 35,839
Costs related to undrawn credit facilities	3,834	3,707
Interest expense—lease liabilities	175
Letters of guarantee	(46)	1,641
Total finance costs	$ 48,730	$ 41,187

Issued Capital - Summary of Cap

Issued Capital - Summary of Capital Issued (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Disclosure of Capital and Reserve [line items]
Issued capital	$ 3,599,203	$ 3,516,437
Issued Capital [member]
Disclosure of Capital and Reserve [line items]
Issued capital	$ 3,599,203	$ 3,516,437

Issued Capital - Summary of C_2

Issued Capital - Summary of Capital Issued (Parenthetical) (Detail) - shares	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disclosure of Capital and Reserve [line items]
Common shares outstanding	447,771,433	444,336,361	442,724,309
Issued Capital [member]
Disclosure of Capital and Reserve [line items]
Common shares issued	447,771,433	444,336,361
Common shares outstanding	447,771,433	444,336,361

Issued Capital - Additional Inf

Issued Capital - Additional Information (Detail) - $ / shares	Dec. 31, 2019	Dec. 31, 2018
Disclosure of classes of share capital [abstract]
Par value per common share	$ 0
Preference shares outstanding		0

Issued Capital - Summary of Com

Issued Capital - Summary of Common Shares Issued and Outstanding (Detail)	12 Months Ended
	Dec. 31, 2019$ / sharesshares	Dec. 31, 2019$ / sharesshares	Dec. 31, 2018$ / sharesshares	Dec. 31, 2018$ / sharesshares
Disclosure of classes of share capital [abstract]
Balance, shares at beginning of period	444,336,361	444,336,361	442,724,309	442,724,309
Share purchase options exercised | $ / shares		$ 25.79		$ 24.28
Restricted share units released | $ / shares	$ 0		$ 0
Dividend reinvestment plan | $ / shares	$ 24.31		$ 18.28
Share purchase options exercised	2,039,735	2,039,735	46,800	46,800
Restricted share units released	133,670	133,670	104,178	104,178
Dividend reinvestment plan	1,261,667	1,261,667	1,461,074	1,461,074
Balance, shares at end of period	447,771,433	447,771,433	444,336,361	444,336,361

Issued Capital - Summary of C_3

Issued Capital - Summary of Common Shares Issued and Outstanding (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2019
Disclosure of classes of share capital [abstract]
Discount applied to average share price in determining number of shares to be issued under DRIP	3.00%

Issued Capital - Schedule of Di

Issued Capital - Schedule of Dividends Declared (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended		96 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019
Disclosure of Dividends [line items]
Dividends declared per share	$ 0.36	$ 0.36
Average number of shares eligible for dividend	446,267	443,386
Total dividends paid	$ 129,987	$ 132,915	$ 1,078,000
Shares issued under the DRIP	$ 1,262	$ 1,461
Cash percentage	81.00%	83.00%
DRIP percentage	19.00%	17.00%
Total dividends paid percentage	100.00%	100.00%
Retained Earnings [member]
Disclosure of Dividends [line items]
Total dividends paid	$ 160,656	$ 159,619
Dividends Paid in Cash [member]
Disclosure of Dividends [line items]
Total dividends paid	129,986	132,915
Dividends Paid in DRIP [member]
Disclosure of Dividends [line items]
Total dividends paid	$ 30,670	$ 26,704

Issued Capital - Schedule of _2

Issued Capital - Schedule of Dividends Declared (Parenthetical) (Detail) - USD ($) $ in Thousands	12 Months Ended		96 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019
Disclosure of dividend [abstract]
Dividend declared	$ 129,987	$ 132,915	$ 1,078,000
Dividend reinvested discount rate	3.00%

Reserves - Summary of Reserves

Reserves - Summary of Reserves (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Reserves
Share purchase warrants	$ 83,077	$ 83,077
Share purchase options	24,010	31,002
Restricted share units	6,405	5,970
Long-term investment revaluation reserve, net of tax	47,209	(112,156)
Total reserves	$ 160,701	$ 7,893

Reserves - Summary of Share Pur

Reserves - Summary of Share Purchase Warrants (Detail) $ / shares in Units, $ in Thousands	Dec. 31, 2019USD ($)Exchange_Ratio$ / sharesshares	Dec. 31, 2018USD ($)
Disclosure of reserves within equity [abstract]
Number of warrants | shares	10,000,000
Exercise Price of Outstanding Share Purchase Warrants, Ending balance | $ / shares	$ 43.75
Exchange Ratio | Exchange_Ratio	1
Share Purchase Warrants Reserve | $	$ 83,077	$ 83,077

Reserves - Additional Informati

Reserves - Additional Information (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2019USD ($)shares	Dec. 31, 2019$ / sharesshares	Dec. 31, 2018USD ($)shares	Dec. 31, 2018$ / sharesshares	Dec. 31, 2017$ / shares
Disclosure of terms and conditions of share-based payment arrangement [line items]
Warrant holders right to purchase common shares	Each warrant entitles the holder the right to purchase one of the Company’s common shares.
Share purchase options outstanding		2,394,490		3,883,350	4,232,260
Options outstanding weighted average exercise price		$ 27.08		$ 25.71	$ 26.71
Stock Options [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Maximum term of share purchase option	ten years
Vesting period	Two years
Trailing period for expected volatility	30 months
Description of share option grants	The Company expenses the fair value of share purchase options that are expected to vest on a straight-line basis over the vesting period using the Black-Scholes option pricing model to estimate the fair value for each option at the date of grant.
Share purchase options outstanding		2,394,490		3,883,350
Options outstanding weighted average exercise price		$ 27.08		$ 25.71
Weighted average share price at the time of exercise		34.83		28.10
Stock Options [member] | Top of range [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Description of Typical Term Of options issued	Five years
RSU [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Vesting period	Two years
Number of RSU issued | shares	132,620		161,060
Weighted average fair value per RSU granted		$ 32.89		$ 26.25
Fair value of RSUs issued during the year | $	$ 3		$ 3
RSUs outstanding at reporting date | shares		366,323		370,133

Reserves - Summary of Fair Valu

Reserves - Summary of Fair Value of Share Purchase Options (Detail)	12 Months Ended
	Dec. 31, 2019USD ($)yrshares	Dec. 31, 2019$ / shares	Dec. 31, 2018USD ($)yrshares	Dec. 31, 2018$ / shares	Jan. 31, 2018$ / shares
Disclosure of terms and conditions of share-based payment arrangement [line items]
Weighted average fair value per option granted		$ 6.10		$ 5.49
Total fair value of options issued | $	$ 3,000,000		$ 2,000,000
Black-Scholes Weighted Average Assumptions [Member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Grant date share price and exercise price		32.88		$ 26.25
Expected dividend yield	1.49%		1.73%
Expected volatility	31.00%		35.00%
Risk-free interest rate	1.60%		1.91%
Expected option life, in years | yr	2.5		2.5
Weighted average fair value per option granted		$ 6.10			$ 5.49
Number of options issued during the period | shares	583,500		549,210
Total fair value of options issued | $	$ 2,652		$ 2,347

Reserves - Disclosure of Inform

Reserves - Disclosure of Information About Options Outstanding and Exercisable (Detail)	12 Months Ended
	Dec. 31, 2019Option$ / shares	Dec. 31, 2018	Dec. 31, 2017
Disclosure of number and weighted average remaining contractual life of outstanding share options [line items]
Total Options Outstanding	2,394,490	3,883,350	4,232,260
Options [member]
Disclosure of number and weighted average remaining contractual life of outstanding share options [line items]
Exercisable Options | Option	1,551,845
Non-Exercisable Options | Option	842,645
Total Options Outstanding | Option	2,394,490
Weighted Average Remaining Contractual Life	2 years 6 months
Options [member] | 23.26 [member]
Disclosure of number and weighted average remaining contractual life of outstanding share options [line items]
Exercise Price	$ 23.26
Exercisable Options	691,250
Total Options Outstanding	691,250
Weighted Average Remaining Contractual Life	1 year 2 months 12 days
Options [member] | 23.27 [member]
Disclosure of number and weighted average remaining contractual life of outstanding share options [line items]
Exercise Price	$ 23.27
Exercisable Options	58,850
Total Options Outstanding	58,850
Weighted Average Remaining Contractual Life	1 year 2 months 12 days
Options [member] | 24.11 [member]
Disclosure of number and weighted average remaining contractual life of outstanding share options [line items]
Exercise Price	$ 24.11
Exercisable Options	8,440
Total Options Outstanding	8,440
Weighted Average Remaining Contractual Life	2 years 7 months 6 days
Options [member] | 25.48 [member]
Disclosure of number and weighted average remaining contractual life of outstanding share options [line items]
Exercise Price	$ 25.48
Exercisable Options	115,000
Total Options Outstanding	115,000
Weighted Average Remaining Contractual Life	2 months 12 days
Options [member] | 26.24 [member]
Disclosure of number and weighted average remaining contractual life of outstanding share options [line items]
Exercise Price	$ 26.24
Exercisable Options	203,240
Non-Exercisable Options	219,510
Total Options Outstanding	422,750
Weighted Average Remaining Contractual Life	3 years 2 months 12 days
Options [member] | 26.26 [member]
Disclosure of number and weighted average remaining contractual life of outstanding share options [line items]
Exercise Price	$ 26.26
Exercisable Options	5,900
Total Options Outstanding	5,900
Weighted Average Remaining Contractual Life	2 months 12 days
Options [member] | 26.51 [member]
Disclosure of number and weighted average remaining contractual life of outstanding share options [line items]
Exercise Price	$ 26.51
Exercisable Options	29,450
Non-Exercisable Options	49,320
Total Options Outstanding	78,770
Weighted Average Remaining Contractual Life	3 years 2 months 12 days
Options [member] | 26.79 [member]
Disclosure of number and weighted average remaining contractual life of outstanding share options [line items]
Exercise Price	$ 26.79
Exercisable Options	47,900
Total Options Outstanding	47,900
Weighted Average Remaining Contractual Life	2 years 2 months 12 days
Options [member] | 27.03 [member]
Disclosure of number and weighted average remaining contractual life of outstanding share options [line items]
Exercise Price	$ 27.03
Exercisable Options	0
Non-Exercisable Options	2,230
Total Options Outstanding	2,230
Weighted Average Remaining Contractual Life	4 years 3 months 18 days
Options [member] | 27.51 [member]
Disclosure of number and weighted average remaining contractual life of outstanding share options [line items]
Exercise Price	$ 27.51
Exercisable Options	380,900
Total Options Outstanding	380,900
Weighted Average Remaining Contractual Life	2 years 2 months 12 days
Options [member] | 27.60 [member]
Disclosure of number and weighted average remaining contractual life of outstanding share options [line items]
Exercise Price	$ 27.60
Exercisable Options	1,820
Total Options Outstanding	1,820
Weighted Average Remaining Contractual Life	2 years 4 months 24 days
Options [member] | 28.43 [member]
Disclosure of number and weighted average remaining contractual life of outstanding share options [line items]
Exercise Price	$ 28.43
Exercisable Options	1,095
Non-Exercisable Options	1,095
Total Options Outstanding	2,190
Weighted Average Remaining Contractual Life	3 years 3 months 18 days
Options [member] | 30.82 [member]
Disclosure of number and weighted average remaining contractual life of outstanding share options [line items]
Exercise Price	$ 30.82
Exercisable Options	0
Non-Exercisable Options	5,970
Total Options Outstanding	5,970
Weighted Average Remaining Contractual Life	4 years 4 months 24 days
Options [member] | 31.89 [member]
Disclosure of number and weighted average remaining contractual life of outstanding share options [line items]
Exercise Price	$ 31.89
Exercisable Options	0
Non-Exercisable Options	95,480
Total Options Outstanding	95,480
Weighted Average Remaining Contractual Life	4 years 2 months 12 days
Options [member] | 32.93 [member]
Disclosure of number and weighted average remaining contractual life of outstanding share options [line items]
Exercise Price	$ 32.93
Exercisable Options	0
Non-Exercisable Options	469,040
Total Options Outstanding	469,040
Weighted Average Remaining Contractual Life	4 years 2 months 12 days
Options [member] | 39.52 [member]
Disclosure of number and weighted average remaining contractual life of outstanding share options [line items]
Exercise Price	$ 39.52
Exercisable Options	8,000
Total Options Outstanding	8,000
Weighted Average Remaining Contractual Life	1 year 7 months 6 days

Reserves - Disclosure of Info_2

Reserves - Disclosure of Information About Options Outstanding and Exercisable (Parenthetical) (Detail)	Dec. 31, 2019ExchangeRate
Disclosure of number and weighted average remaining contractual life of outstanding share options [abstract]
Cdn$/US$ exchange rate	1.2988

Reserves - Disclosure of Outsta

Reserves - Disclosure of Outstanding Share Purchase Options (Detail)	12 Months Ended
	Dec. 31, 2019$ / shares	Dec. 31, 2018$ / shares
Disclosure of terms and conditions of share-based payment arrangement [abstract]
Number of Options Outstanding, Beginning balance	3,883,350	4,232,260
Number of Options Outstanding, Granted	583,500	549,210
Number of Options Outstanding, Exercised	(2,039,735)	(46,800)
Number of Options Outstanding, Forfeited	(15,475)	(7,320)
Number of Options Outstanding, Expired	(17,150)	(844,000)
Number of Options Outstanding, Ending balance	2,394,490	3,883,350
Weighted Average Exercise Price, Beginning balance	$ 25.71	$ 26.71
Weighted Average Exercise Price, Granted	32.88	26.25
Weighted Average Exercise Price, Exercised	25.79	24.28
Weighted Average Exercise Price, Forfeited	31.04	29.24
Weighted Average Exercise Price, Expired	30.69	32.70
Weighted Average Exercise Price, Ending balance	$ 27.08	$ 25.71

Reserves - Disclosure of Outs_2

Reserves - Disclosure of Outstanding Share Purchase Options (Parenthetical) (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2019USD ($)	Dec. 31, 2019$ / shares	Dec. 31, 2018USD ($)	Dec. 31, 2018$ / shares
Disclosure of terms and conditions of share-based payment arrangement [abstract]
Fair value per option granted | $ / shares		$ 6.10		$ 5.49
Fair value of options issued during the year | $	$ 3		$ 2

Reserves - Disclosure of Restri

Reserves - Disclosure of Restricted Share Units Reserve (Detail) - RSU [member]	12 Months Ended
	Dec. 31, 2019USD ($)shares	Dec. 31, 2018USD ($)shares
Disclosure of restricted share units reserve [line items]
Beginning balance | shares	370,133	313,846
Granted | shares	132,620	161,060
Released | shares	(133,670)	(104,178)
Forfeited | shares	(2,760)	(595)
Ending balance | shares	366,323	370,133
Weighted Average Intrinsic Value,Beginning Balance | $	$ 20.36	$ 20.71
Weighted Average Intrinsic Value,Granted | $	24.51	20.42
Weighted Average Intrinsic Value,Released | $	20.82	21.49
Weighted Average Intrinsic Value, Forfeited | $	23.19	20.48
Weighted Average Intrinsic Value, Ending Balance | $	$ 21.67	$ 20.36

Reserves - Disclosure of Rest_2

Reserves - Disclosure of Restricted Share Units Reserve (Parenthetical) (Detail) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
RSU [member]
Disclosure of restricted share units reserve [line items]
Fair value of RSU granted	$ 3	$ 3

Reserves - Disclosure of Long T

Reserves - Disclosure of Long Term Investment Revaluation Reserve (Detail) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018
Disclosure Of Long Term Investment Revaluation Reserve [line items]
Unrealized gain (loss) on LTIs	[1]	$ 152,313	$ (42,647)
Reallocate reserve to retained earnings upon disposal of LTIs		(7,282)	34,061
LTI revaluation reserve (net of tax) [member]
Disclosure Of Long Term Investment Revaluation Reserve [line items]
Long-term investment revaluation reserve at beginning of period		(112,156)	(40,047)
Unrealized gain (loss) on LTIs		152,313	(42,647)
Reallocate reserve to retained earnings upon disposal of LTIs		7,052	(29,462)
Long-term investment revaluation reserve at end of period		47,209	(112,156)
Change in Fair Value [Member] | LTI revaluation reserve (net of tax) [member]
Disclosure Of Long Term Investment Revaluation Reserve [line items]
Long-term investment revaluation reserve at beginning of period		(112,156)	(38,110)
Unrealized gain (loss) on LTIs		161,936	(39,985)
Reallocate reserve to retained earnings upon disposal of LTIs		7,282	(34,061)
Long-term investment revaluation reserve at end of period		57,062	(112,156)
Deferred Tax Recovery Expense [member] | LTI revaluation reserve (net of tax) [member]
Disclosure Of Long Term Investment Revaluation Reserve [line items]
Long-term investment revaluation reserve at beginning of period			(1,937)
Unrealized gain (loss) on LTIs		(9,623)	(2,662)
Reallocate reserve to retained earnings upon disposal of LTIs		(230)	$ 4,599
Long-term investment revaluation reserve at end of period		$ (9,853)
[1]	Definitions as follows: “OCI” = Other Comprehensive Income (Loss); “SBC” = Equity Settled Stock Based Compensation; “Options” = Share Purchase Options; “RSUs” = Restricted Share Units; “LTI’s” = Long-Term Investments; “Warrants” = Share Purchase Warrants.

Stock Based Compensation - Perf

Stock Based Compensation - Performance Share Units - Additional Information (Detail) - PSU PSU in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2019	Dec. 31, 2019	Dec. 31, 2018
Disclosure of information relative to Performance Share Units [line items]
Number of performance share units granted		191,410	220,260
Performance share units (PSUs) [member]
Disclosure of information relative to Performance Share Units [line items]
PSUs vesting period		three year
Number of performance share units granted		191,410	220,260
Performance share units (PSUs) [member] | Bottom of range [member]
Disclosure of information relative to Performance Share Units [line items]
Potential Performance Factors	0.00%
Performance share units (PSUs) [member] | Top of range [member]
Disclosure of information relative to Performance Share Units [line items]
Potential Performance Factors	200.00%

Stock Based Compensation - Sche

Stock Based Compensation - Schedule of the Company's Outstanding PSUs (Detail) PSU in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)PSU	Dec. 31, 2018USD ($)PSU
Disclosure Of Other Equity Instruments - Performance Share Units [abstract]
Beginning balance | PSU	655,727	656,599
Beginning balance | $	$ 10,756	$ 1,430
Granted | PSU	191,410	220,260
Accrual related to the fair value of the PSUs outstanding | PSU	0
Foreign exchange adjustment | PSU	0
Paid | PSU	(229,050)	(218,615)
Forfeited | PSU	(13,395)	(2,517)
Ending balance | PSU	604,692	655,727
Granted | $	$ 0
Accrual related to the fair value of the PSUs outstanding | $	17,174	$ 9,517
Foreign exchange adjustment | $	479	(185)
Paid | $	(9,325)
Forfeited | $	(15)	(6)
Ending balance | $	$ 19,069	$ 10,756

Stock Based Compensation - Sc_2

Stock Based Compensation - Schedule of the Company's Outstanding PSUs (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2018
Performance share units (PSUs) [member]
Disclosure of other equity instruments [line items]
Actual performance factor achieved during completed performance period	0.00%

Stock Based Compensation - Sc_3

Stock Based Compensation - Schedule of Performance Share Units Outstanding (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)PSU	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)
Disclosure of other equity instruments [line items]
Number outstanding	604,692
PSU liability at Sept 30, 2019 | $	$ 19,069	$ 10,756	$ 1,430
Grant Year 2017 [Member]
Disclosure of other equity instruments [line items]
Year Of Maturity	2020
Number outstanding	204,142
Estimated Value Per PSU at Maturity	28.46
Anticipated performance factor at maturity	199.00%
Percent of vesting period complete	92.00%
PSU liability at Sept 30, 2019 | $	$ 10,668
Grant Year 2018 [Member]
Disclosure of other equity instruments [line items]
Year Of Maturity	2021
Number outstanding	213,820
Estimated Value Per PSU at Maturity	28.46
Anticipated performance factor at maturity	192.00%
Percent of vesting period complete	59.00%
PSU liability at Sept 30, 2019 | $	$ 6,895
Grant Year 2019 [Member]
Disclosure of other equity instruments [line items]
Year Of Maturity	2022
Number outstanding	186,730
Estimated Value Per PSU at Maturity	28.45
Anticipated performance factor at maturity	111.00%
Percent of vesting period complete	26.00%
PSU liability at Sept 30, 2019 | $	$ 1,506

Earnings per Share ("EPS") an_3

Earnings per Share ("EPS") and Diluted Earnings per Share ("Diluted EPS") - Summary of Diluted EPS Calculated Based on Weighted Average Number of Shares Outstanding (Detail) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Earnings per share [line items]
Basic weighted average number of shares outstanding	446,021	443,407
Diluted weighted average number of shares outstanding	446,930	443,862
Share purchase options [member]
Earnings per share [line items]
Restricted share units	627	81
Restricted stock units [member]
Earnings per share [line items]
Restricted share units	282	374

Earnings per Share ("EPS") an_4

Earnings per Share ("EPS") and Diluted Earnings per Share ("Diluted EPS") - Additional Information (Detail) - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Earnings per share [abstract]
Average market value of common shares	$ 32.40	$ 25.32

Earnings per Share ("EPS") an_5

Earnings per Share ("EPS") and Diluted Earnings per Share ("Diluted EPS") - Summary of Share Purchase Options and Share Purchase Warrants Excluded From Computation of Diluted Earnings Per Share (Detail) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Earnings per share [line items]
Share options not included in calculation of diluted earnings per share	10,477	12,801
Share purchase options [member]
Earnings per share [line items]
Share options not included in calculation of diluted earnings per share	477	2,801
Share purchase warrants [member]
Earnings per share [line items]
Share options not included in calculation of diluted earnings per share	10,000	10,000

Supplemental Cash Flow Inform_3

Supplemental Cash Flow Information - Summary of Cash Flow Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Change in non-cash working capital
Accounts receivable	$ (2,514)	$ 828
Accounts payable and accrued liabilities	(9,791)	7,977
Other	468	159
Total change in non-cash working capital	$ (11,837)	$ 8,964

Supplemental Cash Flow Inform_4

Supplemental Cash Flow Information - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	May 10, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019
Disclosure of cash flow statement [line items]
Dividends declared per share		$ 0.36	$ 0.36
Total dividends paid		$ 129,987	$ 132,915	$ 1,078,000
DRIP percentage		19.00%	17.00%
Cash outflow for leases		$ 804,000
Retained Earnings [member]
Disclosure of cash flow statement [line items]
Total dividends paid		160,656	$ 159,619
Dividends Paid in Cash [member]
Disclosure of cash flow statement [line items]
Total dividends paid		129,986	132,915
Dividends Paid in DRIP [member]
Disclosure of cash flow statement [line items]
Total dividends paid		$ 30,670	$ 26,704
First Majestic [member]
Disclosure of cash flow statement [line items]
Number of common shares received	20,914,590
Fair value of shares received	$ 151,000
First Majestic [member] | San Dimas [member]
Disclosure of cash flow statement [line items]
Number of common shares received			20,914,590
Fair value of shares received			$ 151,000

Income Taxes - Schedule of Inco

Income Taxes - Schedule of Income Tax Expense (Recovery) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Income tax [line items]
Reversal of previously recognized differences	$ (16,521)	$ (5,393)
Total deferred income tax recovery from operations	(9,210)	(704)
Income tax expense (recovery)	(9,066)	15,868
Foreign jurisdictions [member]
Income tax [line items]
Current income tax expense related	73	86
CRA [member]
Income tax [line items]
Origination and reversal of temporary differences	7,311	841
Reversal of previously recognized differences	(16,521)	(5,393)
Total deferred income tax recovery from operations	(9,210)	(4,552)
Total income tax expense (recovery) from operations	(9,137)	(4,466)
Impact of CRA Settlement [member] | CRA [member]
Income tax [line items]
Current income tax expense related	71	4,020
Reversal of previously recognized differences		3,848
Income tax expense offset by previously unrecognized non-capital losses recognized through Equity		12,466
Income tax expense (recovery)	$ 71	$ 20,334

Income Taxes - Schedule of In_2

Income Taxes - Schedule of Income Tax Expense (Recovery) (Parenthetical) (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2019USD ($)
2005 - 2017 taxation year [member] | Impact of CRA Settlement [member]
Income tax [line items]
Non-tax effected deductible temporary differences which gave rise to a deferred tax asset being recognized	$ 18

Income Taxes - Schedule of In_3

Income Taxes - Schedule of Income Tax Recognized as Component of OCI (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Income tax relating to components of other comprehensive income [abstract]
Income tax expense (recovery) related to LTIs - common shares held	$ 9,623	$ 2,662

Income Taxes - Schedule of In_4

Income Taxes - Schedule of Income Tax Recognized Directly in Equity (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Current and deferred tax relating to items charged or credited directly to equity [line items]
Income tax expense (recovery) from operations	$ (376)	$ (14,389)
Origination and reversal of temporary differences [member]
Current and deferred tax relating to items charged or credited directly to equity [line items]
Income tax expense (recovery) from operations		1,078
Write down (reversal of write down) or recognition of prior period temporary differences
Current and deferred tax relating to items charged or credited directly to equity [line items]
Income tax expense (recovery) from operations	(376)	(3,001)
Income Tax Recovery [member]
Current and deferred tax relating to items charged or credited directly to equity [line items]
Income tax expense (recovery) from operations	$ (376)	(1,923)
Impact of CRA Settlement [member] | 2005 - 2017 taxation year [member]
Current and deferred tax relating to items charged or credited directly to equity [line items]
Income tax expense (recovery) recognized in equity		$ (12,466)

Income Taxes - Schedule of Prov

Income Taxes - Schedule of Provision for Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Reconciliation of accounting profit multiplied by applicable tax rates [abstract]
Earnings before income taxes	$ 77,072	$ 442,983
Canadian federal and provincial income tax rates	27.00%	27.00%
Income tax expense (recovery) based on above rates	$ 20,809	$ 119,605
Non-deductible stock based compensation and other	3,291	4,676
Differences in tax rates in foreign jurisdictions	(78,724)	(133,361)
Impact of CRA Settlement	71	20,334
Current period unrecognized temporary differences - impairment of mineral stream interests	44,796
Current period unrecognized temporary differences—other	17,212	10,007
Write down (reversal of write down) or recognition of prior period temporary differences	(16,521)	(5,393)
Income tax expense (recovery)	$ (9,066)	$ 15,868

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) $ in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)	Dec. 31, 2018CAD ($)
Income tax [line items]
Name of subsidiary	Wheaton Precious Metals International Ltd.
Proportion of ownership interest in subsidiary	100.00%
Non Capital Losses	$ 103
Canada [member]
Income tax [line items]
Capital losses	33
2038 expiration [member] | Canada [member]
Income tax [line items]
Non Capital Losses	40
2039 expiration [member] | Canada [member]
Income tax [line items]
Non Capital Losses	$ 63
Impact of CRA Settlement [member] | 2005 - 2017 taxation year [member]
Income tax [line items]
Current Tax Expense related to CRA settlement		$ 4	$ 5.5
Interest and penalties related to CRA settlement		4.3	$ 5.9
Income tax expense offset by previously unrecognized tax loss credited directly to equity		$ 12

Income Taxes - Deferred Income

Income Taxes - Deferred Income Tax Assets and Liabilities Recognized (Detail) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018
Deferred Tax Assets And Liabilities [line items]
Opening Balance		$ (111)	$ (76)
Recovery (Expense) Recognized In Net Earnings		9,210	704
Recovery (Expense) Recognized In OCI	[1]	(9,623)	(2,662)
Recovery (Expense) Recognized In Shareholders' Equity		376	14,389
Closing Balance		(148)	(111)
Non-capital loss carryforwards [member]
Deferred Tax Assets And Liabilities [line items]
Opening Balance		3,823	3,848
Recovery (Expense) Recognized In Net Earnings		4,497	(2,057)
Recovery (Expense) Recognized In Shareholders' Equity		436	2,032
Closing Balance		8,756	3,823
Capital losses carryforward [member]
Deferred Tax Assets And Liabilities [line items]
Opening Balance			1,965
Recovery (Expense) Recognized In Net Earnings		4,503	2,633
LTI Disposition			(4,598)
Recovery (Expense) Recognized In OCI		4,450
Closing Balance		8,953
Deferred tax assets other [member]
Deferred Tax Assets And Liabilities [line items]
Opening Balance		387	147
Recovery (Expense) Recognized In Net Earnings		307	240
Closing Balance		694	387
Interest capitalized for accounting [member]
Deferred Tax Assets And Liabilities [line items]
Opening Balance		(87)	(87)
Closing Balance		(87)	(87)
Debt and share financing fees [member]
Deferred Tax Assets And Liabilities [line items]
Opening Balance		(591)	(375)
Recovery (Expense) Recognized In Net Earnings		(60)	(107)
Recovery (Expense) Recognized In Shareholders' Equity		(60)	(109)
Closing Balance		(711)	(591)
Kutcho convertible note [member]
Deferred Tax Assets And Liabilities [line items]
Opening Balance			(29)
Recovery (Expense) Recognized In Net Earnings			29
Unrealized gains on long term investments [member]
Deferred Tax Assets And Liabilities [line items]
Opening Balance			(1,937)
Recovery (Expense) Recognized In Net Earnings			1
LTI Disposition			4,598
Recovery (Expense) Recognized In OCI		(14,073)	(2,662)
Closing Balance		(14,073)
Mineral stream interest [member]
Deferred Tax Assets And Liabilities [line items]
Opening Balance		(3,532)	(3,532)
Closing Balance		(3,532)	(3,532)
Foreign withholding tax [member]
Deferred Tax Assets And Liabilities [line items]
Opening Balance		(111)	(76)
Recovery (Expense) Recognized In Net Earnings		(37)	(35)
Closing Balance		$ (148)	$ (111)
[1]	LTIs = long-term investments – common shares held.

Income Taxes - Deferred Incom_2

Income Taxes - Deferred Income Tax Assets and Liabilities Recognized (Parenthetical) (Detail) $ in Millions	Dec. 31, 2019USD ($)
Deferred tax assets and liabilities [abstract]
Non-tax effected deductible temporary differences which gave rise to a deferred tax asset being recognized	$ 32
Non-tax effected deductible temporary differences on account of capital which have been recognized as a deferred tax asset	$ 33

Income Taxes -Schedule of Defer

Income Taxes -Schedule of Deferred Income Tax Assets Unrecognized (Detail) - Canada [member] - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Unrecognized deferred tax assets [line items]
Deferred tax assets	$ 140,279	$ 107,334
Non-capital losses [member]
Unrecognized deferred tax assets [line items]
Deferred tax assets	19,145	7,209
Financing fees [member]
Unrecognized deferred tax assets [line items]
Deferred tax assets	1,383	4,474
Mineral stream interest [member]
Unrecognized deferred tax assets [line items]
Deferred tax assets	107,785	67,717
Deferred tax assets other [member]
Unrecognized deferred tax assets [line items]
Deferred tax assets	4,282	3,656
Capital losses [member]
Unrecognized deferred tax assets [line items]
Deferred tax assets	0	7,723
Convertible note receivable [member]
Unrecognized deferred tax assets [line items]
Deferred tax assets	951	648
Unrealized losses on long term investments [member]
Unrecognized deferred tax assets [line items]
Deferred tax assets	$ 6,733	$ 15,907

Income Taxes -Schedule of Def_2

Income Taxes -Schedule of Deferred Income Tax Assets Unrecognized (Parenthetical) (Detail) - Canada [member] $ in Millions	Dec. 31, 2019USD ($)
Non-capital losses [member]
Unrecognized deferred tax assets [line items]
Non-tax effected deductible temporary differences for which no deferred tax asset is recognized	$ 71
Capital losses [member]
Unrecognized deferred tax assets [line items]
Non-tax effected deductible temporary differences for which no deferred tax asset is recognized	$ 0

Other Current Assets - Disclosu

Other Current Assets - Disclosure of other current assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Disclosure Of Other Current Assets [Line Items]
Non-revolving term loan	$ 431
Prepaid expenses	1,492	$ 1,508
Class action settlement recoverable	41,500
Other	81	33
Total other current assets	$ 43,504	$ 1,541

Other Current Assets - Addition

Other Current Assets - Additional Information (Detail) - Kutcho [member] $ in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2019	Nov. 25, 2019USD ($)	Nov. 25, 2019CAD ($)
Disclosure Of Other Current Assets [Line Items]
Short term loan advanced stated interest rate	15.00%
Short term loan lent maturity date	Dec. 31, 2020
Maximum [member]
Disclosure Of Other Current Assets [Line Items]
Non revolving short term loan maximum lending capacity		$ 1	$ 1.3

Other Long-Term Assets - Schedu

Other Long-Term Assets - Schedule of Other Long-Term Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Disclosure Of Other Non current Assets [Abstract]
Intangible assets	$ 3,419	$ 3,291
Debt issue costs—Revolving Facility	5,154	5,507
Adventus ROFR	615	615
Subscription rights	1,524
Other	3,854	902
Total other long-term assets	$ 14,566	$ 10,315

Other Long-Term Assets - Additi

Other Long-Term Assets - Additional Information (Detail) - 12 months ended Dec. 31, 2019 $ in Thousands, $ in Millions	USD ($)shares	CAD ($)
Statement [Line Items]
Subscription rights | $	$ 1,524
Caldas Finance Corp [Member]
Statement [Line Items]
Number Of Subscription Rights Acquired | shares	1
Subscription rights	$ 1,500	$ 2

Related Party Transactions - Sc

Related Party Transactions - Schedule of Key Management Personnel Compensation, Including Directors (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Disclosure of transactions between related parties [line items]
Short-term benefits	$ 6,599	$ 7,402
Post-employment benefits	661	56
Equity settled stock based compensation (a non-cash expense)	3,709	3,559
Total executive compensation	21,612	17,018
Performance share units (PSUs) [member]
Disclosure of transactions between related parties [line items]
Equity settled stock based compensation (a non-cash expense)	$ 10,643	$ 6,001

Related Party Transactions - _2

Related Party Transactions - Schedule of Key Management Personnel Compensation, Including Directors (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2019
Disclosure of transactions between related parties [abstract]
Vesting period of performance share units	3 years

Post-Employment Benefit Costs -

Post-Employment Benefit Costs - Schedule of Post Employment Benefits (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Disclosure of terms and conditions of defined contribution retirement savings plan [abstract]
Supplemental Employee Retirement Plan (SERP)	$ 810
Group RRSP	223	$ 226
Total post-employment benefits	$ 1,033	$ 226

Post-Employment Benefit Costs_2

Post-Employment Benefit Costs - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2019
Retirement Benefits Plan [Line Items]
Percentage of Registered Retirement Savings Plan contribution limit	50.00%
Percentage of employee salary eligible for Registered Retirement Savings Plan contribution	9.00%
Supplemental employee retirement plan [member]
Retirement Benefits Plan [Line Items]
Description of retirement benefits promised to participants	Interest on this benefit accrues annually based on the 5-year Government of Canada bond rate.
Retirement plan benefits vesting period	5 years
Retirement plan benenfits period over which the same shall be distributed	10 years
Supplemental employee retirement plan [member] | Bottom of range [member]
Retirement Benefits Plan [Line Items]
Agggregate percentage of employees base salary and target bonus net of amount paid to group RRSP	10.00%
Supplemental employee retirement plan [member] | Top of range [member]
Retirement Benefits Plan [Line Items]
Agggregate percentage of employees base salary and target bonus net of amount paid to group RRSP	15.00%

Commitments and Contingencies -

Commitments and Contingencies - Summary of Commitments to Purchase Mineral Stream (Detail) - $ / oz	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	May 10, 2018
Penasquito [member]
Disclosure of contractual obligations and commitments [line items]
Term of Agreement	Life of Mine
Date of Original Contract	Jul. 24, 2007
Penasquito [member] | Gold [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	n/a
Percentage of production to be purchased	0.00%
Penasquito [member] | Silver [member]
Disclosure of contractual obligations and commitments [line items]
Percentage of production to be purchased	25.00%
Per Unit of Measurement Cash Payment	4.26
Penasquito [member] | Palladium [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	n/a
Percentage of production to be purchased	0.00%
Penasquito [member] | Cobalt [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	n/a
Percentage of production to be purchased	0.00%
Constancia [member]
Disclosure of contractual obligations and commitments [line items]
Term of Agreement	Life of Mine
Date of Original Contract	Aug. 8, 2012
Constancia [member] | Gold [member]
Disclosure of contractual obligations and commitments [line items]
Percentage of production to be purchased	50.00%
Per Unit of Measurement Cash Payment	404
Constancia [member] | Silver [member]
Disclosure of contractual obligations and commitments [line items]
Percentage of production to be purchased	100.00%
Per Unit of Measurement Cash Payment	5.96
Constancia [member] | Palladium [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	n/a
Percentage of production to be purchased	0.00%
Constancia [member] | Cobalt [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	n/a
Percentage of production to be purchased	0.00%
Salobo [member]
Disclosure of contractual obligations and commitments [line items]
Term of Agreement	Life of Mine
Date of Original Contract	Feb. 28, 2013
Salobo [member] | Gold [member]
Disclosure of contractual obligations and commitments [line items]
Percentage of production to be purchased	75.00%
Per Unit of Measurement Cash Payment	408
Salobo [member] | Silver [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	n/a
Percentage of production to be purchased	0.00%
Salobo [member] | Palladium [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	n/a
Percentage of production to be purchased	0.00%
Salobo [member] | Cobalt [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	n/a
Percentage of production to be purchased	0.00%
Sudbury [member]
Disclosure of contractual obligations and commitments [line items]
Term of Agreement	20 years
Date of Original Contract	Feb. 28, 2013
Sudbury [member] | Gold [member]
Disclosure of contractual obligations and commitments [line items]
Percentage of production to be purchased	70.00%
Per Unit of Measurement Cash Payment	400
Sudbury [member] | Silver [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	n/a
Percentage of production to be purchased	0.00%
Sudbury [member] | Palladium [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	n/a
Percentage of production to be purchased	0.00%
Sudbury [member] | Cobalt [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	n/a
Percentage of production to be purchased	0.00%
Antamina [member]
Disclosure of contractual obligations and commitments [line items]
Term of Agreement	Life of Mine
Date of Original Contract	Nov. 3, 2015
Antamina [member] | Gold [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	n/a
Percentage of production to be purchased	0.00%
Antamina [member] | Silver [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	variable
Percentage of production to be purchased	33.75%
Antamina [member] | Palladium [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	n/a
Percentage of production to be purchased	0.00%
Antamina [member] | Cobalt [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	n/a
Percentage of production to be purchased	0.00%
San Dimas [member]
Disclosure of contractual obligations and commitments [line items]
Term of Agreement	Life of Mine
Date of Original Contract	May 10, 2018
San Dimas [member] | Gold [member]
Disclosure of contractual obligations and commitments [line items]
Percentage of production to be purchased, description	variable
Per Unit of Measurement Cash Payment	606	600
San Dimas [member] | Silver [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	n/a
Percentage of production to be purchased	0.00%		100.00%
San Dimas [member] | Palladium [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	n/a
Percentage of production to be purchased	0.00%
San Dimas [member] | Cobalt [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	n/a
Percentage of production to be purchased	0.00%
Stillwater [member]
Disclosure of contractual obligations and commitments [line items]
Term of Agreement	Life of Mine
Date of Original Contract	Jul. 16, 2018
Stillwater [member] | Gold [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	variable
Percentage of production to be purchased	100.00%
Stillwater [member] | Silver [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	n/a
Percentage of production to be purchased	0.00%
Stillwater [member] | Palladium [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	variable
Percentage of production to be purchased	4.50%
Stillwater [member] | Cobalt [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	n/a
Percentage of production to be purchased	0.00%
Voisey's Bay [member]
Disclosure of contractual obligations and commitments [line items]
Term of Agreement	Life of Mine
Date of Original Contract	Jun. 11, 2018
Voisey's Bay [member] | Gold [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	n/a
Percentage of production to be purchased	0.00%
Voisey's Bay [member] | Silver [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	n/a
Percentage of production to be purchased	0.00%
Voisey's Bay [member] | Palladium [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	n/a
Percentage of production to be purchased	0.00%
Voisey's Bay [member] | Cobalt [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	variable
Percentage of production to be purchased	42.40%
Los Filos [member]
Disclosure of contractual obligations and commitments [line items]
Term of Agreement	25 years
Date of Original Contract	Oct. 15, 2004
Los Filos [member] | Gold [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	n/a
Percentage of production to be purchased	0.00%
Los Filos [member] | Silver [member]
Disclosure of contractual obligations and commitments [line items]
Percentage of production to be purchased	100.00%
Per Unit of Measurement Cash Payment	4.43
Los Filos [member] | Palladium [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	n/a
Percentage of production to be purchased	0.00%
Los Filos [member] | Cobalt [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	n/a
Percentage of production to be purchased	0.00%
Zinkgruvan [member]
Disclosure of contractual obligations and commitments [line items]
Term of Agreement	Life of Mine
Date of Original Contract	Dec. 8, 2004
Zinkgruvan [member] | Gold [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	n/a
Percentage of production to be purchased	0.00%
Zinkgruvan [member] | Silver [member]
Disclosure of contractual obligations and commitments [line items]
Percentage of production to be purchased	100.00%
Per Unit of Measurement Cash Payment	4.43
Zinkgruvan [member] | Palladium [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	n/a
Percentage of production to be purchased	0.00%
Zinkgruvan [member] | Cobalt [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	n/a
Percentage of production to be purchased	0.00%
Yauliyacu [member]
Disclosure of contractual obligations and commitments [line items]
Term of Agreement	Life of Mine
Date of Original Contract	Mar. 23, 2006
Yauliyacu [member] | Gold [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	n/a
Percentage of production to be purchased	0.00%
Yauliyacu [member] | Silver [member]
Disclosure of contractual obligations and commitments [line items]
Percentage of production to be purchased	100.00%
Per Unit of Measurement Cash Payment	8.89
Yauliyacu [member] | Palladium [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	n/a
Percentage of production to be purchased	0.00%
Yauliyacu [member] | Cobalt [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	n/a
Percentage of production to be purchased	0.00%
Stratoni [member]
Disclosure of contractual obligations and commitments [line items]
Term of Agreement	Life of Mine
Date of Original Contract	Apr. 23, 2007
Stratoni [member] | Gold [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	n/a
Percentage of production to be purchased	0.00%
Stratoni [member] | Silver [member]
Disclosure of contractual obligations and commitments [line items]
Percentage of production to be purchased	100.00%
Per Unit of Measurement Cash Payment	9.33
Stratoni [member] | Palladium [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	n/a
Percentage of production to be purchased	0.00%
Stratoni [member] | Cobalt [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	n/a
Percentage of production to be purchased	0.00%
Neves-Corvo [member]
Disclosure of contractual obligations and commitments [line items]
Term of Agreement	50 years
Date of Original Contract	Jun. 5, 2007
Neves-Corvo [member] | Gold [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	n/a
Percentage of production to be purchased	0.00%
Neves-Corvo [member] | Silver [member]
Disclosure of contractual obligations and commitments [line items]
Percentage of production to be purchased	100.00%
Per Unit of Measurement Cash Payment	4.30
Neves-Corvo [member] | Palladium [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	n/a
Percentage of production to be purchased	0.00%
Neves-Corvo [member] | Cobalt [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	n/a
Percentage of production to be purchased	0.00%
Aljustrel [member]
Disclosure of contractual obligations and commitments [line items]
Term of Agreement	50 years
Date of Original Contract	Jun. 5, 2007
Aljustrel [member] | Gold [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	n/a
Percentage of production to be purchased	0.00%
Aljustrel [member] | Silver [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	variable
Percentage of production to be purchased	100.00%
Aljustrel [member] | Palladium [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	n/a
Percentage of production to be purchased	0.00%
Aljustrel [member] | Cobalt [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	n/a
Percentage of production to be purchased	0.00%
Minto [member]
Disclosure of contractual obligations and commitments [line items]
Term of Agreement	Life of Mine
Date of Original Contract	Nov. 20, 2008
Minto [member] | Gold [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	variable
Percentage of production to be purchased	100.00%
Minto [member] | Silver [member]
Disclosure of contractual obligations and commitments [line items]
Percentage of production to be purchased	100.00%
Per Unit of Measurement Cash Payment	4.27
Minto [member] | Palladium [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	n/a
Percentage of production to be purchased	0.00%
Minto [member] | Cobalt [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	n/a
Percentage of production to be purchased	0.00%
Keno Hill [member]
Disclosure of contractual obligations and commitments [line items]
Term of Agreement	Life of Mine
Date of Original Contract	Oct. 2, 2008
Keno Hill [member] | Gold [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	n/a
Percentage of production to be purchased	0.00%
Keno Hill [member] | Silver [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	variable 
Percentage of production to be purchased	25.00%
Keno Hill [member] | Palladium [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	n/a
Percentage of production to be purchased	0.00%
Keno Hill [member] | Cobalt [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	n/a
Percentage of production to be purchased	0.00%
Pascua-Lama [member]
Disclosure of contractual obligations and commitments [line items]
Term of Agreement	Life of Mine
Date of Original Contract	Sep. 8, 2009
Pascua-Lama [member] | Gold [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	n/a
Percentage of production to be purchased	0.00%
Pascua-Lama [member] | Silver [member]
Disclosure of contractual obligations and commitments [line items]
Percentage of production to be purchased	25.00%
Per Unit of Measurement Cash Payment	3.90
Pascua-Lama [member] | Palladium [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	n/a
Percentage of production to be purchased	0.00%
Pascua-Lama [member] | Cobalt [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	n/a
Percentage of production to be purchased	0.00%
Rosemont [member]
Disclosure of contractual obligations and commitments [line items]
Term of Agreement	Life of Mine
Date of Original Contract	Feb. 10, 2010
Rosemont [member] | Gold [member]
Disclosure of contractual obligations and commitments [line items]
Percentage of production to be purchased	100.00%
Per Unit of Measurement Cash Payment	450
Rosemont [member] | Silver [member]
Disclosure of contractual obligations and commitments [line items]
Percentage of production to be purchased	100.00%
Per Unit of Measurement Cash Payment	3.90
Rosemont [member] | Palladium [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	n/a
Percentage of production to be purchased	0.00%
Rosemont [member] | Cobalt [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	n/a
Percentage of production to be purchased	0.00%
777 [member]
Disclosure of contractual obligations and commitments [line items]
Term of Agreement	Life of Mine
Date of Original Contract	Aug. 8, 2012
777 [member] | Gold [member]
Disclosure of contractual obligations and commitments [line items]
Percentage of production to be purchased	50.00%
Per Unit of Measurement Cash Payment	420
777 [member] | Silver [member]
Disclosure of contractual obligations and commitments [line items]
Percentage of production to be purchased	100.00%
Per Unit of Measurement Cash Payment	6.20
777 [member] | Palladium [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	n/a
Percentage of production to be purchased	0.00%
777 [member] | Cobalt [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	n/a
Percentage of production to be purchased	0.00%
Toroparu [member]
Disclosure of contractual obligations and commitments [line items]
Term of Agreement	Life of Mine
Date of Original Contract	Nov. 11, 2013
Toroparu [member] | Gold [member]
Disclosure of contractual obligations and commitments [line items]
Percentage of production to be purchased	10.00%
Per Unit of Measurement Cash Payment	400
Toroparu [member] | Silver [member]
Disclosure of contractual obligations and commitments [line items]
Percentage of production to be purchased	50.00%
Per Unit of Measurement Cash Payment	3.90
Toroparu [member] | Palladium [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	n/a
Percentage of production to be purchased	0.00%
Toroparu [member] | Cobalt [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	n/a
Percentage of production to be purchased	0.00%
Cotabambas [member]
Disclosure of contractual obligations and commitments [line items]
Term of Agreement	Life of Mine
Date of Original Contract	Mar. 21, 2016
Cotabambas [member] | Gold [member]
Disclosure of contractual obligations and commitments [line items]
Percentage of production to be purchased	25.00%
Per Unit of Measurement Cash Payment	450
Cotabambas [member] | Silver [member]
Disclosure of contractual obligations and commitments [line items]
Percentage of production to be purchased	100.00%
Per Unit of Measurement Cash Payment	5.90
Cotabambas [member] | Palladium [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	n/a
Percentage of production to be purchased	0.00%
Cotabambas [member] | Cobalt [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	n/a
Percentage of production to be purchased	0.00%
Kutcho [member]
Disclosure of contractual obligations and commitments [line items]
Term of Agreement	Life of Mine
Date of Original Contract	Dec. 14, 2017
Kutcho [member] | Gold [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	variable
Percentage of production to be purchased	100.00%
Kutcho [member] | Silver [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	variable
Percentage of production to be purchased	100.00%
Kutcho [member] | Palladium [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	n/a
Percentage of production to be purchased	0.00%
Kutcho [member] | Cobalt [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	n/a
Percentage of production to be purchased	0.00%
Loma de La Plata [member]
Disclosure of contractual obligations and commitments [line items]
Term of Agreement	Life of Mine
Loma de La Plata [member] | Gold [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	n/a
Percentage of production to be purchased	0.00%
Loma de La Plata [member] | Silver [member]
Disclosure of contractual obligations and commitments [line items]
Percentage of production to be purchased	12.50%
Per Unit of Measurement Cash Payment	4
Loma de La Plata [member] | Palladium [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	n/a
Percentage of production to be purchased	0.00%
Loma de La Plata [member] | Cobalt [member]
Disclosure of contractual obligations and commitments [line items]
Per Unit of Measurement Cash Payment, description	n/a
Percentage of production to be purchased	0.00%

Commitments and Contingencies_2

Commitments and Contingencies - Summary of Commitments to Purchase Mineral Stream (Parenthetical) (Detail) lb in Millions	Jul. 16, 2018oz	Dec. 31, 2019oz$ / ozlb	Dec. 31, 2018$ / oz	May 10, 2018oz
Yauliyacu [member]
Disclosure of contractual obligations and commitments [line items]
Minimum market price of silver on a per ounce basis before top up payment is required		20
Maximum market price of silver on a per ounce basis before top up payment is capped		40
Aljustrel [member]
Disclosure of contractual obligations and commitments [line items]
Maximum percentage of copper included in concentrate		15.00%
Cotabambas [member]
Disclosure of contractual obligations and commitments [line items]
Cumulative silver equivalent ounces to be produced before reduction in stream percentage | oz		90,000,000
Constancia and 777 [member]
Disclosure of contractual obligations and commitments [line items]
Initial term of contract		40 years
Silver interests [member] | Antamina [member]
Disclosure of contractual obligations and commitments [line items]
Per ounce cash payment as a percentage of the spot price of metal delivered		20.00%
Silver interests [member] | Minto PMPA Agreement Amendment [member]
Disclosure of contractual obligations and commitments [line items]
Per ounce cash payment as a percentage of the spot price of metal delivered		75.00%
Number of ounces to be delivered before first step down in entitlement percentage | oz		11,000
Per Ounce Cash Payment		325
No of months for continuation of amended pricing		14 months
Gold interests [member] | San Dimas [member]
Disclosure of contractual obligations and commitments [line items]
Percentage of production to be purchased		25.00%
Percentage of silver production to be Converted to gold and purchased		25.00%
Gold to silver price ratio minimum limit for revisiting stated exchange rate		50
Gold to silver price ratio maximum limit for revisiting stated exchange rate		90
Exchange ratio to be fixed when price ratio reach minimum limit for six months		50
Exchange ratio to be fixed when price ratio reach maximum limit for six months		90
Gold to silver exchange ratio, description		If the average gold to silver price ratio decreases to less than 50:1 or increases to more than 90:1 for a period of 6 months or more, then the “70” shall be revised to “50” or “90”, as the case may be, until such time as the average gold to silver price ratio is between 50:1 to 90:1 for a period of 6 months or more in which event the “70” shall be reinstated.
Gold [member] | Antamina [member]
Disclosure of contractual obligations and commitments [line items]
Percentage of production to be purchased		0.00%
Gold [member] | San Dimas [member]
Disclosure of contractual obligations and commitments [line items]
Percentage of silver production to be Converted to gold and purchased			25.00%
Gold to silver exchange ratio		70	70
Attributable Payable Production to be Purchased there after			25.00%
Per Ounce Cash Payment		606	600
Gold [member] | Stillwater [member]
Disclosure of contractual obligations and commitments [line items]
Percentage of production to be purchased		100.00%
Per ounce cash payment as a percentage of the spot price of metal delivered after upfront deposit reduced to NIL	18.00%
Gold [member] | Voisey's Bay [member]
Disclosure of contractual obligations and commitments [line items]
Percentage of production to be purchased		0.00%
Gold [member] | Yauliyacu [member]
Disclosure of contractual obligations and commitments [line items]
Percentage of production to be purchased		0.00%
Gold [member] | Stratoni [member]
Disclosure of contractual obligations and commitments [line items]
Percentage of production to be purchased		0.00%
Gold [member] | Aljustrel [member]
Disclosure of contractual obligations and commitments [line items]
Percentage of production to be purchased		0.00%
Gold [member] | Minto [member]
Disclosure of contractual obligations and commitments [line items]
Percentage of production to be purchased		100.00%
Number of ounces to be delivered before sharing mechanism applies | oz		30,000
Attributable Payable Production to be Purchased there after		50.00%
Gold [member] | Cotabambas [member]
Disclosure of contractual obligations and commitments [line items]
Percentage of production to be purchased		25.00%
Attributable Payable Production to be Purchased after stream percentage reduction		16.67%
Per Ounce Cash Payment		450
Gold [member] | Kutcho [member]
Disclosure of contractual obligations and commitments [line items]
Percentage of production to be purchased		100.00%
Cumulative gold ounces to be delivered before reduction in stream percentage | oz		51,000
Gold [member] | Constancia deposit at constancia mine [member]
Disclosure of contractual obligations and commitments [line items]
Fixed rate gold recoveries		55.00%
Gold [member] | Pampacancha deposit at constancia mine [member]
Disclosure of contractual obligations and commitments [line items]
Fixed rate gold recoveries		70.00%
The end of fixed rate recoveries | oz		265,000
Gold [member] | Constancia and 777 [member]
Disclosure of contractual obligations and commitments [line items]
Price per ounce after the initial 40 year term		550
Silver [member] | Antamina [member]
Disclosure of contractual obligations and commitments [line items]
Percentage of production to be purchased		33.75%
Silver [member] | San Dimas [member]
Disclosure of contractual obligations and commitments [line items]
Percentage of production to be purchased		0.00%		100.00%
Attributable Payable Production to be Purchased there after				50.00%
Number of silver ounces to be delivered before sharing mechanism applies | oz				6,000,000
Silver [member] | Stillwater [member]
Disclosure of contractual obligations and commitments [line items]
Percentage of production to be purchased		0.00%
Silver [member] | Voisey's Bay [member]
Disclosure of contractual obligations and commitments [line items]
Percentage of production to be purchased		0.00%
Silver [member] | Yauliyacu [member]
Disclosure of contractual obligations and commitments [line items]
Price floor on a per ounce basis | oz		4.35
Percentage of production to be purchased		100.00%
Number of silver ounces to be delivered before sharing mechanism applies | oz		1,500,000
Top up payment to be paid on a per ounce basis as a percentage of the difference between the actual price per ounce and the Minimum price per ounce		50.00%
Purchase commitments percentage		50.00%
Per Ounce Cash Payment		8.89
Maximum top up payment		10
Price cap on a per ounce basis		18.89
Silver [member] | Stratoni [member]
Disclosure of contractual obligations and commitments [line items]
Percentage of production to be purchased		100.00%
Per Ounce Cash Payment		9.33
Area of drilling completed level 1 | oz		10,000
Area of drilling completed level 2 | oz		20,000
Area of drilling completed level 3 | oz		30,000
Top up payment on a per ounce basis - level 1		2.50
Top up payment on a per ounce basis - level 2		5
Top up payment on a per ounce basis - level 3		7
Area of drilling completed | oz		20,000
Silver [member] | Aljustrel [member]
Disclosure of contractual obligations and commitments [line items]
Percentage of production to be purchased		100.00%
Per ounce cash payment as a percentage of the per ounce price received related to metal delivered		50.00%
Silver [member] | Minto [member]
Disclosure of contractual obligations and commitments [line items]
Percentage of production to be purchased		100.00%
Per Ounce Cash Payment		4.27
Silver [member] | Cotabambas [member]
Disclosure of contractual obligations and commitments [line items]
Percentage of production to be purchased		100.00%
Attributable Payable Production to be Purchased after stream percentage reduction		66.67%
Per Ounce Cash Payment		5.90
Silver [member] | Kutcho [member]
Disclosure of contractual obligations and commitments [line items]
Percentage of production to be purchased		100.00%
Attributable Payable Production to be Purchased after stream percentage reduction		66.67%
Cumulative silver ounces to be delivered before reduction in stream percentage | oz		5,600,000
Silver [member] | Constancia and 777 [member]
Disclosure of contractual obligations and commitments [line items]
Price per ounce after the initial 40 year term		9.90
Palladium [member] | Antamina [member]
Disclosure of contractual obligations and commitments [line items]
Percentage of production to be purchased		0.00%
Palladium [member] | San Dimas [member]
Disclosure of contractual obligations and commitments [line items]
Percentage of production to be purchased		0.00%
Palladium [member] | Stillwater [member]
Disclosure of contractual obligations and commitments [line items]
Percentage of production to be purchased		4.50%
Number of ounces to be delivered before first step down in entitlement percentage | oz	375,000	375,000
Percentage of production to be purchased after first step down	2.25%	2.25%
Number of ounces to be delivered before second step down in entitlement percentage | oz	550,000	550,000
Percentage of production to be purchased after second step down	1.00%	1.00%
Per ounce cash payment as a percentage of the per ounce price received related to metal delivered	18.00%	18.00%
Per ounce cash payment as a percentage of the spot price of metal delivered after upfront deposit reduced to NIL	22.00%	22.00%
Palladium [member] | Voisey's Bay [member]
Disclosure of contractual obligations and commitments [line items]
Percentage of production to be purchased		0.00%
Palladium [member] | Yauliyacu [member]
Disclosure of contractual obligations and commitments [line items]
Percentage of production to be purchased		0.00%
Palladium [member] | Stratoni [member]
Disclosure of contractual obligations and commitments [line items]
Percentage of production to be purchased		0.00%
Palladium [member] | Aljustrel [member]
Disclosure of contractual obligations and commitments [line items]
Percentage of production to be purchased		0.00%
Palladium [member] | Minto [member]
Disclosure of contractual obligations and commitments [line items]
Percentage of production to be purchased		0.00%
Palladium [member] | Cotabambas [member]
Disclosure of contractual obligations and commitments [line items]
Percentage of production to be purchased		0.00%
Palladium [member] | Kutcho [member]
Disclosure of contractual obligations and commitments [line items]
Percentage of production to be purchased		0.00%
Cobalt [member] | Antamina [member]
Disclosure of contractual obligations and commitments [line items]
Percentage of production to be purchased		0.00%
Cobalt [member] | San Dimas [member]
Disclosure of contractual obligations and commitments [line items]
Percentage of production to be purchased		0.00%
Cobalt [member] | Stillwater [member]
Disclosure of contractual obligations and commitments [line items]
Percentage of production to be purchased		0.00%
Cobalt [member] | Voisey's Bay [member]
Disclosure of contractual obligations and commitments [line items]
Percentage of production to be purchased		42.40%
Per ounce cash payment as a percentage of the per ounce price received related to metal delivered		18.00%
Per ounce cash payment as a percentage of the spot price of metal delivered after upfront deposit reduced to NIL		22.00%
Cobalt pounds to be delivered before entitlement step down takes effect | lb		31
Percentage of metal production at the mine which WPM is entitled to after step down		21.20%
Cobalt [member] | Yauliyacu [member]
Disclosure of contractual obligations and commitments [line items]
Percentage of production to be purchased		0.00%
Cobalt [member] | Stratoni [member]
Disclosure of contractual obligations and commitments [line items]
Percentage of production to be purchased		0.00%
Cobalt [member] | Aljustrel [member]
Disclosure of contractual obligations and commitments [line items]
Percentage of production to be purchased		0.00%
Cobalt [member] | Minto [member]
Disclosure of contractual obligations and commitments [line items]
Percentage of production to be purchased		0.00%
Cobalt [member] | Cotabambas [member]
Disclosure of contractual obligations and commitments [line items]
Percentage of production to be purchased		0.00%
Cobalt [member] | Kutcho [member]
Disclosure of contractual obligations and commitments [line items]
Percentage of production to be purchased		0.00%

Commitments and Contingencies_3

Commitments and Contingencies - Additional Information (Detail) $ in Thousands		Feb. 08, 2019USD ($)	Dec. 31, 2019USD ($)MillionTonnesPerAnnumTonnes_Per_Day	Dec. 31, 2020USD ($)
Disclosure of contingent liabilities [line items]
Upfront cash consideration to be paid	[1],[2]		$ 327,500
Upfront cash consideration paid to date	[1]		31,000
Reassessment interest and penalties			$ 7,000
Percentage of reassessments interest and penalties			50.00%
Litigation of Settlement To Defendant			$ 41,500
2013-2015 taxation year [member]
Disclosure of contingent liabilities [line items]
Potential estimated cash taxes, interest and penalties			2,000
Loma de La Plata [member]
Disclosure of contingent liabilities [line items]
Upfront cash consideration to be paid			32,000
Rosemont [member]
Disclosure of contingent liabilities [line items]
Upfront cash consideration to be paid		$ 230,000
First installment payable on permitting projet		50,000
Balance installment amount payable once project costs incurred exceeds specified amount		180,000
Project costs incurred to trigger balance installment payable		$ 98,000
Toroparu [member] | Scenario Forecasting [Member]
Disclosure of contingent liabilities [line items]
Upfront cash consideration to be paid				$ 138,000
Reduced stream percentage of gold				0.909%
Current stream percentage of gold				10.00%
Current stream percentage of silver				50.00%
Reduced stream percentage of silver				0.00%
Amount of non-refundable advance				$ 2,000
Cotabambas [member]
Disclosure of contingent liabilities [line items]
Amount of non-refundable advance			2,000
Total upfront cash payment for early deposit silver streaming interest			140,000
Upfront cash consideration paid to date			9,000
Unpaid upfront cash consideration with scheduled payment dates			5,000
Kutcho [member]
Disclosure of contingent liabilities [line items]
Total upfront cash payment for early deposit silver streaming interest			65,000
Upfront cash consideration paid to date			7,000
Unpaid upfront cash consideration with no scheduled payment dates			58,000
Additional upfront consideration			$ 20,000
Mill throughput capacity | Tonnes_Per_Day			4,500
Additional payment condition			if processing throughput is increased to 4,500 tonnes per day or more within 5 years of attaining commercial production.
Salobo [member]
Disclosure of contingent liabilities [line items]
Mill throughput capacity | MillionTonnesPerAnnum			24
Salobo [member] | Bottom of range [member] | Mill Throughput Capacity Expansion [member]
Disclosure of contingent liabilities [line items]
Expanded Mill throughput capacity | MillionTonnesPerAnnum			28
Estimated expansion payments			$ 113,000
Salobo [member] | Bottom of range [member] | Mill Throughput Capacity Expansion [member] | Salobo Three Expansion [member]
Disclosure of contingent liabilities [line items]
Estimated expansion payments			$ 550,000
Salobo [member] | Top of range [member] | Mill Throughput Capacity Expansion [member]
Disclosure of contingent liabilities [line items]
Expanded Mill throughput capacity | MillionTonnesPerAnnum			40
Estimated expansion payments			$ 953,000
Salobo [member] | Top of range [member] | Mill Throughput Capacity Expansion [member] | Salobo Three Expansion [member]
Disclosure of contingent liabilities [line items]
Estimated expansion payments			$ 670,000
[1]	Expressed in thousands of United States dollars; excludes closing costs and capitalized interest, where applicable.
[2]	Please refer to Note 29 for details of when the remaining upfront consideration to be paid becomes due.

Commitments and Contingencies_4

Commitments and Contingencies - Summary of Other Contractual Obligations and Contingencies (Detail) $ in Thousands	Dec. 31, 2019USD ($)
Disclosure of contractual obligations [line items]
Total contractual obligations	$ 1,570,099
Bank debt [member]
Disclosure of contractual obligations [line items]
Total contractual obligations	874,500
Interest expense [member]
Disclosure of contractual obligations [line items]
Total contractual obligations	99,301
Non-revolving credit facility [member]
Disclosure of contractual obligations [line items]
Total contractual obligations	564
Leases liabilities [member]
Disclosure of contractual obligations [line items]
Total contractual obligations	4,684
Rosemont [member] | Mineral stream interest payments [member]
Disclosure of contractual obligations [line items]
Total contractual obligations	231,150
Loma de La Plata [member] | Mineral stream interest payments [member]
Disclosure of contractual obligations [line items]
Total contractual obligations	32,400
Toroparu [member] | Mineral stream interest payments [member]
Disclosure of contractual obligations [line items]
Total contractual obligations	138,000
Cotabambas [member] | Mineral stream interest payments [member]
Disclosure of contractual obligations [line items]
Total contractual obligations	131,500
Kutcho [member] | Mineral stream interest payments [member]
Disclosure of contractual obligations [line items]
Total contractual obligations	58,000
2020 [member]
Disclosure of contractual obligations [line items]
Total contractual obligations	28,292
2020 [member] | Interest expense [member]
Disclosure of contractual obligations [line items]
Total contractual obligations	25,363
2020 [member] | Non-revolving credit facility [member]
Disclosure of contractual obligations [line items]
Total contractual obligations	564
2020 [member] | Leases liabilities [member]
Disclosure of contractual obligations [line items]
Total contractual obligations	865
2020 [member] | Cotabambas [member] | Mineral stream interest payments [member]
Disclosure of contractual obligations [line items]
Total contractual obligations	1,500
2021 - 2023 [member]
Disclosure of contractual obligations [line items]
Total contractual obligations	74,736
2021 - 2023 [member] | Interest expense [member]
Disclosure of contractual obligations [line items]
Total contractual obligations	68,061
2021 - 2023 [member] | Leases liabilities [member]
Disclosure of contractual obligations [line items]
Total contractual obligations	2,675
2021 - 2023 [member] | Cotabambas [member] | Mineral stream interest payments [member]
Disclosure of contractual obligations [line items]
Total contractual obligations	4,000
2024 - 2025 [member]
Disclosure of contractual obligations [line items]
Total contractual obligations	881,521
2024 - 2025 [member] | Bank debt [member]
Disclosure of contractual obligations [line items]
Total contractual obligations	874,500
2024 - 2025 [member] | Interest expense [member]
Disclosure of contractual obligations [line items]
Total contractual obligations	5,877
2024 - 2025 [member] | Leases liabilities [member]
Disclosure of contractual obligations [line items]
Total contractual obligations	1,144
Sub-Total [member]
Disclosure of contractual obligations [line items]
Total contractual obligations	984,549
Sub-Total [member] | Bank debt [member]
Disclosure of contractual obligations [line items]
Total contractual obligations	874,500
Sub-Total [member] | Interest expense [member]
Disclosure of contractual obligations [line items]
Total contractual obligations	99,301
Sub-Total [member] | Non-revolving credit facility [member]
Disclosure of contractual obligations [line items]
Total contractual obligations	564
Sub-Total [member] | Leases liabilities [member]
Disclosure of contractual obligations [line items]
Total contractual obligations	4,684
Sub-Total [member] | Cotabambas [member] | Mineral stream interest payments [member]
Disclosure of contractual obligations [line items]
Total contractual obligations	5,500
No scheduled due date [member]
Disclosure of contractual obligations [line items]
Total contractual obligations	585,550
No scheduled due date [member] | Rosemont [member] | Mineral stream interest payments [member]
Disclosure of contractual obligations [line items]
Total contractual obligations	231,150
No scheduled due date [member] | Loma de La Plata [member] | Mineral stream interest payments [member]
Disclosure of contractual obligations [line items]
Total contractual obligations	32,400
No scheduled due date [member] | Toroparu [member] | Mineral stream interest payments [member]
Disclosure of contractual obligations [line items]
Total contractual obligations	138,000
No scheduled due date [member] | Cotabambas [member] | Mineral stream interest payments [member]
Disclosure of contractual obligations [line items]
Total contractual obligations	126,000
No scheduled due date [member] | Kutcho [member] | Mineral stream interest payments [member]
Disclosure of contractual obligations [line items]
Total contractual obligations	$ 58,000

Commitments and Contingencies_5

Commitments and Contingencies - Summary of Other Contractual Obligations and Contingencies (Parenthetical) (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Disclosure of contractual obligations [line items]
Outstanding on the Revolving Facility	$ 874,500	$ 1,264,000
2023 - 2024 [member] | Bank debt [member]
Disclosure of contractual obligations [line items]
Outstanding on the Revolving Facility	875,000
No scheduled due date [member] | Rosemont [member]
Disclosure of contractual obligations [line items]
Contingent transaction costs	$ 1,000

Segmented Information - Schedul

Segmented Information - Schedule of Operating Segments (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Disclosure of operating segments [line items]
Sales	$ 861,332	$ 794,012
Cost of sales, excluding depletion	258,559	245,794
Depletion	256,826	252,287
Gross margin	345,947	295,931
Impairment charges	165,912
Net earnings	86,138	427,115
Cash Flow From Operations	501,620	477,413
Total Assets	6,278,007	6,470,046
General and administrative material reconciling items [member]
Disclosure of operating segments [line items]
Net earnings	(54,507)	(51,650)
Cash Flow From Operations	(46,292)	(29,564)
Finance costs material reconciling items [member]
Disclosure of operating segments [line items]
Net earnings	(48,730)	(41,187)
Cash Flow From Operations	(44,733)	(40,363)
Other material reconciling Items [member]
Disclosure of operating segments [line items]
Net earnings	274	(5,826)
Cash Flow From Operations	(2,191)	1,458
Income tax recovery material reconciling items [member]
Disclosure of operating segments [line items]
Net earnings	9,066
Cash Flow From Operations	(5,380)
Aggregate material reconciling items [member]
Disclosure of operating segments [line items]
Net earnings	(93,897)	131,184
Cash Flow From Operations	(98,596)	(69,429)
Total Assets	543,901	313,207
Gain on disposal of the san dimas spa [member]
Disclosure of operating segments [line items]
Net earnings		245,715
Income tax expense material reconciling items[member]
Disclosure of operating segments [line items]
Net earnings		(15,868)
Cash Flow From Operations		(960)
Gold interests [member]
Disclosure of operating segments [line items]
Sales	541,045	441,193
Cost of sales, excluding depletion	163,997	142,728
Depletion	158,816	146,319
Gross margin	218,232
Net earnings	218,232	152,146
Cash Flow From Operations	377,523	297,016
Total Assets	3,497,235	3,656,056
Gold interests [member] | Sudbury [member]
Disclosure of operating segments [line items]
Sales	38,234	21,785
Cost of sales, excluding depletion	10,946	6,804
Depletion	22,420	13,525
Gross margin	4,868
Net earnings	4,868	1,456
Cash Flow From Operations	27,385	14,959
Total Assets	344,043	366,463
Gold interests [member] | Salobo [member]
Disclosure of operating segments [line items]
Sales	365,448	336,474
Cost of sales, excluding depletion	106,282	106,347
Depletion	100,803	102,672
Gross margin	158,363
Net earnings	158,363	127,455
Cash Flow From Operations	259,166	230,126
Total Assets	2,605,257	2,706,060
Gold interests [member] | Constancia [member]
Disclosure of operating segments [line items]
Sales	27,613	15,259
Cost of sales, excluding depletion	7,945	4,818
Depletion	7,141	4,504
Gross margin	12,527
Net earnings	12,527	5,937
Cash Flow From Operations	19,668	10,441
Total Assets	110,406	117,547
Gold interests [member] | Other gold interests [member]
Disclosure of operating segments [line items]
Sales	29,919	33,955
Cost of sales, excluding depletion	8,736	10,367
Depletion	8,191	10,459
Gross margin	12,992
Net earnings	12,992	13,129
Cash Flow From Operations	21,561	22,162
Total Assets	13,168	21,359
Gold interests [member] | San Dimas [member]
Disclosure of operating segments [line items]
Sales	62,528	26,943
Cost of sales, excluding depletion	26,994	13,177
Depletion	13,828	12,234
Gross margin	21,706
Net earnings	21,706	1,532
Cash Flow From Operations	35,534	13,766
Total Assets	194,367	208,195
Gold interests [member] | Stillwater [member]
Disclosure of operating segments [line items]
Sales	17,303	6,777
Cost of sales, excluding depletion	3,094	1,215
Depletion	6,433	2,925
Gross margin	7,776
Net earnings	7,776	2,637
Cash Flow From Operations	14,209	5,562
Total Assets	229,994	236,432
Silver interests [member]
Disclosure of operating segments [line items]
Sales	288,401	343,579
Cost of sales, excluding depletion	88,906	101,410
Depletion	88,291	101,935
Gross margin	111,204
Net earnings	111,204	140,234
Cash Flow From Operations	196,463	242,242
Total Assets	1,759,392	1,847,668
Silver interests [member] | Constancia [member]
Disclosure of operating segments [line items]
Sales	38,895	34,082
Cost of sales, excluding depletion	14,258	12,863
Depletion	18,044	15,572
Gross margin	6,593
Net earnings	6,593	5,647
Cash Flow From Operations	24,637	21,219
Total Assets	228,187	246,231
Silver interests [member] | San Dimas [member]
Disclosure of operating segments [line items]
Sales		40,594
Cost of sales, excluding depletion		10,549
Depletion		3,575
Net earnings		26,470
Cash Flow From Operations		30,045
Silver interests [member] | Penasquito [member]
Disclosure of operating segments [line items]
Sales	74,578	77,691
Cost of sales, excluding depletion	19,267	20,501
Depletion	14,020	14,528
Gross margin	41,291
Net earnings	41,291	42,662
Cash Flow From Operations	55,310	57,190
Total Assets	374,702	388,722
Silver interests [member] | Antamina [member]
Disclosure of operating segments [line items]
Sales	76,328	86,408
Cost of sales, excluding depletion	15,322	17,265
Depletion	41,267	47,561
Gross margin	19,739
Net earnings	19,739	21,582
Cash Flow From Operations	61,007	69,143
Total Assets	668,810	710,077
Silver interests [member] | Other silver interests [member]
Disclosure of operating segments [line items]
Sales	98,600	104,804
Cost of sales, excluding depletion	40,059	40,232
Depletion	14,960	20,699
Gross margin	43,581
Net earnings	43,581	43,873
Cash Flow From Operations	55,509	64,645
Total Assets	487,693	502,638
Mineral Stream Interests [member]
Disclosure of operating segments [line items]
Sales	861,332	794,012
Cost of sales, excluding depletion	258,559	245,794
Depletion	256,826	252,287
Gross margin	345,947
Impairment charges	165,912
Net earnings	180,035	295,931
Cash Flow From Operations	600,216	546,842
Total Assets	5,734,106	6,156,839
Palladium interest [member] | Stillwater [member]
Disclosure of operating segments [line items]
Sales	31,886	9,240
Cost of sales, excluding depletion	5,656	1,656
Depletion	9,719	4,033
Gross margin	16,511
Net earnings	16,511	3,551
Cash Flow From Operations	26,230	7,584
Total Assets	249,969	259,693
Cobalt Interests [member] | Voisey's Bay [member]
Disclosure of operating segments [line items]
Impairment charges	165,912
Net earnings	(165,912)
Total Assets	$ 227,510	$ 393,422

Segmented Information - Sched_2

Segmented Information - Schedule of Operating Segments (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Salobo and Sudbury [member] | Vale [member]
Disclosure of operating segments [line items]
Percentage of entity's revenue relative to Mine Operator	47.00%	45.00%
Antamina and Yauliyacu [member] | Glencore plc [member]
Disclosure of operating segments [line items]
Percentage of entity's revenue relative to Mine Operator	12.00%	15.00%
Penasquito [member] | Goldcorp Corp [member]
Disclosure of operating segments [line items]
Percentage of entity's revenue relative to Mine Operator		10.00%
Constancia and 777 [member] | Hudbay Minerals Inc. [member]
Disclosure of operating segments [line items]
Percentage of entity's revenue relative to Mine Operator	11.00%	10.00%
Gold interests [member]
Disclosure of operating segments [line items]
Percentage of sales	10.00%	10.00%
Silver interests [member]
Disclosure of operating segments [line items]
Percentage of sales	10.00%	10.00%
Silver interests [member] | Veladero and Lagunas Norte and Pierina [member]
Disclosure of operating segments [line items]
Agreement Expiration Date		March 31, 2018

Segmented Information - Sched_3

Segmented Information - Schedule of Company's Geographical Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Disclosure of geographical areas [line items]
Sales	$ 861,332	$ 794,012
Percentage of revenue derived from mineral stream interests located in geographic area	100.00%	100.00%
Mineral stream interest	$ 5,734,106	$ 6,156,839
Percentage of mineral stream interests located in geographic area	100.00%	100.00%
Canada [member]
Disclosure of geographical areas [line items]
Sales	$ 74,307	$ 64,589
Percentage of revenue derived from mineral stream interests located in geographic area	9.00%	8.00%
Mineral stream interest	$ 616,846	$ 815,146
Percentage of mineral stream interests located in geographic area	11.00%	13.00%
United States [member]
Disclosure of geographical areas [line items]
Sales	$ 49,189	$ 16,018
Percentage of revenue derived from mineral stream interests located in geographic area	6.00%	1.00%
Mineral stream interest	$ 480,529	$ 496,676
Percentage of mineral stream interests located in geographic area	8.00%	8.00%
Mexico [member]
Disclosure of geographical areas [line items]
Sales	$ 139,275	$ 147,274
Percentage of revenue derived from mineral stream interests located in geographic area	16.00%	19.00%
Mineral stream interest	$ 570,385	$ 598,273
Percentage of mineral stream interests located in geographic area	10.00%	10.00%
Greece [member]
Disclosure of geographical areas [line items]
Sales	$ 9,339	$ 8,020
Percentage of revenue derived from mineral stream interests located in geographic area	1.00%	1.00%
Mineral stream interest	$ 1,990	$ 5,884
Percentage of mineral stream interests located in geographic area	0.00%	0.00%
Portugal [member]
Disclosure of geographical areas [line items]
Sales	$ 28,012	$ 20,484
Percentage of revenue derived from mineral stream interests located in geographic area	3.00%	3.00%
Mineral stream interest	$ 21,355	$ 22,420
Percentage of mineral stream interests located in geographic area	0.00%	0.00%
Sweden [member]
Disclosure of geographical areas [line items]
Sales	$ 25,250	$ 24,188
Percentage of revenue derived from mineral stream interests located in geographic area	3.00%	3.00%
Mineral stream interest	$ 35,059	$ 37,371
Percentage of mineral stream interests located in geographic area	1.00%	1.00%
Argentina / Chile [member]
Disclosure of geographical areas [line items]
Sales		$ 4,444
Percentage of revenue derived from mineral stream interests located in geographic area	0.00%	1.00%
Mineral stream interest	$ 264,403	$ 264,401
Percentage of mineral stream interests located in geographic area	5.00%	4.00%
Brazil [member]
Disclosure of geographical areas [line items]
Sales	$ 365,448	$ 336,474
Percentage of revenue derived from mineral stream interests located in geographic area	42.00%	42.00%
Mineral stream interest	$ 2,605,258	$ 2,706,061
Percentage of mineral stream interests located in geographic area	45.00%	44.00%
Peru [member]
Disclosure of geographical areas [line items]
Sales	$ 170,512	$ 172,521
Percentage of revenue derived from mineral stream interests located in geographic area	20.00%	22.00%
Mineral stream interest	$ 1,138,281	$ 1,210,607
Percentage of mineral stream interests located in geographic area	20.00%	20.00%
Gold interests [member]
Disclosure of geographical areas [line items]
Sales	$ 541,045	$ 441,193
Mineral stream interest	3,497,235	3,656,056
Gold interests [member] | Canada [member]
Disclosure of geographical areas [line items]
Mineral stream interest	357,212	387,823
Gold interests [member] | United States [member]
Disclosure of geographical areas [line items]
Mineral stream interest	229,994	236,432
Gold interests [member] | Mexico [member]
Disclosure of geographical areas [line items]
Mineral stream interest	194,365	208,194
Gold interests [member] | Brazil [member]
Disclosure of geographical areas [line items]
Mineral stream interest	2,605,258	2,706,061
Gold interests [member] | Peru [member]
Disclosure of geographical areas [line items]
Mineral stream interest	110,406	117,546
Silver interests [member]
Disclosure of geographical areas [line items]
Sales	288,401	343,579
Mineral stream interest	1,759,392	1,847,668
Silver interests [member] | Canada [member]
Disclosure of geographical areas [line items]
Mineral stream interest	32,124	33,901
Silver interests [member] | United States [member]
Disclosure of geographical areas [line items]
Mineral stream interest	566	551
Silver interests [member] | Mexico [member]
Disclosure of geographical areas [line items]
Mineral stream interest	376,020	390,079
Silver interests [member] | Greece [member]
Disclosure of geographical areas [line items]
Mineral stream interest	1,990	5,884
Silver interests [member] | Portugal [member]
Disclosure of geographical areas [line items]
Mineral stream interest	21,355	22,420
Silver interests [member] | Sweden [member]
Disclosure of geographical areas [line items]
Mineral stream interest	35,059	37,371
Silver interests [member] | Argentina / Chile [member]
Disclosure of geographical areas [line items]
Mineral stream interest	264,403	264,401
Silver interests [member] | Peru [member]
Disclosure of geographical areas [line items]
Mineral stream interest	1,027,875	1,093,061
Palladium interest [member]
Disclosure of geographical areas [line items]
Mineral stream interest	249,969	259,693
Palladium interest [member] | United States [member]
Disclosure of geographical areas [line items]
Mineral stream interest	249,969	259,693
Cobalt Interests [member]
Disclosure of geographical areas [line items]
Mineral stream interest	227,510	393,422
Cobalt Interests [member] | Canada [member]
Disclosure of geographical areas [line items]
Mineral stream interest	$ 227,510	$ 393,422

Subsequent Events - Additional

Subsequent Events - Additional Information (Detail) - $ / shares	Mar. 11, 2020	Dec. 31, 2019
Disclosure of Events After Reporting Period [line items]
Declaration of quarterly dividend rate description		Under the Company’s dividend policy, the quarterly dividend per common share is targeted to equal approximately 30% of the average cash flow generated by operating activities in the previous four quarters divided by the Company’s then outstanding common shares, all rounded to the nearest cent.
Dividend reinvested discount rate		3.00%
Major Ordinary Share Transactions [member]
Disclosure of Events After Reporting Period [line items]
Dividend per share	$ 0.10
Dividend payable, date of record	Mar. 26, 2020
Dividend reinvested discount rate	1.00%
Dividend payable date	Apr. 9, 2020
Quarterly dividend [member]
Disclosure of Events After Reporting Period [line items]
Dividend per share		$ 0.10