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v3.20.1

Royalty, stream and other interests (Narrative) (Details) $ in Millions | 1 Months Ended | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Feb. 28, 2020 | Sep. 30, 2019 CAD ($) Ounce | Sep. 30, 2019 USD ($) Ounce | Mar. 31, 2019 CAD ($) | Dec. 31, 2019 CAD ($) Ounce | Dec. 31, 2019 USD ($) Ounce | Dec. 31, 2018 CAD ($) Ounce | Dec. 31, 2018 USD ($) Ounce | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($)
Other assets impaired |  |  |  |  |  |  |  |  |  |
Royalty, Stream And Other Interests [Line Items] |  |  |  |  |  |  |  |  |  |
Additional impairment charges on royalty and offtake interests |  |  |  |  |  |  | $ 9.7 |  |  |
Additional impairment charges on royalty and offtake interests, net of income taxes |  |  |  |  |  |  | $ 8.3 |  |  |
Falco [Member] | Home 5 [Member] |  |  |  |  |  |  |  |  |  |
Royalty, Stream And Other Interests [Line Items] |  |  |  |  |  |  |  |  |  |
Silver stream percentage |  |  |  |  |  |  | 100.00% | 100.00% |  |
Outstanding notes receivable amount |  |  |  |  |  |  | $ 20.0 |  |  |
Investments in royalty, payment |  |  |  |  | $ 5.0 |  |  |  |  |
Payment of up-front cash deposit |  |  |  |  |  |  | $ 180.0 |  |  |
Ongoing payments equal to a percentage of silver spot price |  |  |  |  |  |  | 20.00% | 20.00% |  |
Per ounce/carat price |  |  |  |  |  |  | a maximum of US$6 per ounce | a maximum of US$6 per ounce |  |
Falco [Member] | Home 5 [Member] | Short Term Investment [Member] |  |  |  |  |  |  |  |  |  |
Royalty, Stream And Other Interests [Line Items] |  |  |  |  |  |  |  |  |  |
Investments in royalty, payment |  |  |  |  | $ 10.0 |  |  |  |  |
Falco [Member] | Home 5 [Member] | Royalty, Stream And Other Interests [Member] |  |  |  |  |  |  |  |  |  |
Royalty, Stream And Other Interests [Line Items] |  |  |  |  |  |  |  |  |  |
Initial net smelter return |  |  |  |  | 1.00% | 1.00% |  |  |  |
Investments in royalty, payment |  |  |  |  | $ 10.0 |  |  |  |  |
Barkerville [Member] |  |  |  |  |  |  |  |  |  |
Royalty, Stream And Other Interests [Line Items] |  |  |  |  |  |  |  |  |  |
Net smelter return |  |  |  |  | 4.00% | 4.00% |  |  |  |
Barkerville [Member] | Cariboo Gold project [Member] |  |  |  |  |  |  |  |  |  |
Royalty, Stream And Other Interests [Line Items] |  |  |  |  |  |  |  |  |  |
Net smelter return, additional |  |  |  |  |  |  | 1.75% | 1.75% |  |
Cash purchase price |  |  |  |  |  |  | $ 20.0 |  |  |
Barkerville [Member] | Cariboo Gold project [Member] | Increase [Member] |  |  |  |  |  |  |  |  |  |
Royalty, Stream And Other Interests [Line Items] |  |  |  |  |  |  |  |  |  |
Net smelter return |  |  |  |  |  |  | 4.00% | 4.00% |  |
Victoria [Member] |  |  |  |  |  |  |  |  |  |
Royalty, Stream And Other Interests [Line Items] |  |  |  |  |  |  |  |  |  |
Investments in associates, royalty streams and other interests |  |  |  |  |  |  | $ 148.0 |  |  |
Equity interests in associate |  |  |  |  |  |  | $ 50.0 |  |  |
Victoria [Member] | Dublin Gulch Property [Member] |  |  |  |  |  |  |  |  |  |
Royalty, Stream And Other Interests [Line Items] |  |  |  |  |  |  |  |  |  |
Percentage of NSR acquired |  |  |  |  |  |  | 5.00% | 5.00% |  |
Investments in royalty streams and other interests. |  |  |  |  |  |  | $ 98.0 |  |  |
Investments in royalty, payment |  |  |  |  | $ 19.6 |  | $ 78.4 |  |  |
Refined gold delivered in ounces | Ounce |  |  |  |  |  |  | 97,500 | 97,500 |  |
Net smelter return, additional |  |  |  |  |  |  | 3.00% | 3.00% |  |
Victoria [Member] | Dublin Gulch Property [Member] | Financing Transaction Payment Tranche One [Member] |  |  |  |  |  |  |  |  |  |
Royalty, Stream And Other Interests [Line Items] |  |  |  |  |  |  |  |  |  |
Investments in royalty, payment |  |  |  |  |  |  | $ 49.0 |  |  |
Victoria [Member] | Dublin Gulch Property [Member] | Financing Transaction Payment Tranche Two [Member] |  |  |  |  |  |  |  |  |  |
Royalty, Stream And Other Interests [Line Items] |  |  |  |  |  |  |  |  |  |
Investments in royalty, payment |  |  |  |  |  |  | 49.0 |  |  |
Victoria [Member] | Dublin Gulch Property [Member] | Financing Transaction Payment Tranche Two Additional Payments [Member] |  |  |  |  |  |  |  |  |  |
Royalty, Stream And Other Interests [Line Items] |  |  |  |  |  |  |  |  |  |
Investments in royalty, payment |  |  |  |  |  |  | $ 14.7 |  |  |
Stornoway Diamond Corporation [Member] |  |  |  |  |  |  |  |  |  |
Royalty, Stream And Other Interests [Line Items] |  |  |  |  |  |  |  |  |  |
Proportion of ownership interest |  |  |  |  | 35.10% | 35.10% |  |  |  |
Diamond stream percentage |  |  |  |  | 9.60% | 9.60% |  |  |  |
Proceeds from stream deliveries |  |  |  |  | $ 6.3 |  |  |  |  |
Working capital facility initial amount |  |  |  |  | 20.0 |  |  |  |  |
Osisko's attributable portion of the working capital facility |  |  |  |  | 7.0 |  |  |  |  |
Osisko's attributable portion of the working capital facility advanced |  |  |  |  | 2.5 |  |  |  |  |
Stornoway Diamond Corporation [Member] | Renard diamond mine [Member] |  |  |  |  |  |  |  |  |  |
Royalty, Stream And Other Interests [Line Items] |  |  |  |  |  |  |  |  |  |
Impairment of royalty, stream and other interests recorded by the operator |  |  |  |  | 83.2 |  |  |  |  |
Impairment of royalty, stream and other interests |  |  |  | $ 38.9 |  |  |  |  |  |
Impairment of royalty, stream and other interests, net of tax |  |  |  | 28.6 |  |  |  |  |  |
Stornoway Diamond Corporation [Member] | Renard Diamond Stream [Member] |  |  |  |  |  |  |  |  |  |
Royalty, Stream And Other Interests [Line Items] |  |  |  |  |  |  |  |  |  |
Proportion of ownership interest |  |  |  |  |  |  | 9.60% | 9.60% |  |
Impairment of royalty, stream and other interests |  |  |  |  | 47.2 |  |  |  |  |
Impairment of royalty, stream and other interests, net of tax |  |  |  |  | 34.6 |  |  |  |  |
Additional impairment of royalty stream and other interests |  |  |  |  | 7.0 |  |  |  |  |
Additional impairment of royalty stream and other interests net of tax |  |  |  |  | 5.1 |  |  |  |  |
Estimated recoverable amount |  |  |  | $ 122.4 | $ 70.2 |  |  |  |  |
Reasonable increase decrease in estimates, percentage |  |  |  |  | 10.00% |  |  |  | 10.00% |
Additional up-front deposit |  |  |  |  |  |  | $ 21.4 |  |  |
Per ounce/carat price |  |  |  |  |  |  | US$40 per carat | US$40 per carat |  |
Per ounce/carat price before amendment |  |  |  |  |  |  | US$50 per carat | US$50 per carat |  |
Management estimated additional impairment charge |  |  |  |  | $ 3.0 |  |  |  |  |
Management estimated additional impairment charge net of income taxes |  |  |  |  | 2.2 |  |  |  |  |
Stornoway Diamond Corporation [Member] | Renard Diamond Stream [Member] | Streamers [Member] |  |  |  |  |  |  |  |  |  |
Royalty, Stream And Other Interests [Line Items] |  |  |  |  |  |  |  |  |  |
Proportion of ownership interest |  |  |  |  |  |  | 20.00% | 20.00% |  |
Additional up-front deposit |  |  |  |  |  |  | $ 45.0 |  |  |
Eleonore NSR royalty [Member] |  |  |  |  |  |  |  |  |  |
Royalty, Stream And Other Interests [Line Items] |  |  |  |  |  |  |  |  |  |
Impairment of royalty, stream and other interests |  |  |  |  | 27.2 |  | 148.5 |  |  |
Impairment of royalty, stream and other interests, net of tax |  |  |  |  | 20.0 |  | 109.1 |  |  |
Additional impairment of royalty stream and other interests |  |  |  |  |  |  | 13.9 |  |  |
Estimated recoverable amount |  |  |  |  | $ 101.3 |  | $ 138.6 |  |  |
Reasonable increase decrease in estimates, percentage |  |  |  |  |  |  | 10.00% |  |  | 10.00%
Reduction to gold mineral reserves and resources due to change in resource estimates |  |  |  |  |  |  | 21.00% |  |  | 21.00%
Long term annual gold production for royalty | Ounce |  |  |  |  | 355,000 | 355,000 | 400,000 | 400,000 |  |
Long term gold price per ounce |  |  |  |  |  | $ 1,400 |  | $ 1,300 |  |
Percentage of post tax real discount rate |  |  |  |  | 4.10% | 4.10% | 5.10% | 5.10% |  |
Management estimated additional impairment charge |  |  |  |  |  |  | $ 7.8 |  |  |
Additional impairment charges on royalty and offtake interests |  |  |  |  | $ 10.1 |  |  |  |  |
Additional impairment charges on royalty and offtake interests, net of income taxes |  |  |  |  | $ 4.2 |  |  |  |  |
Management's estimate long term gold price per ounce |  |  |  |  |  | $ 1,260 |  | $ 1,170 |  |
Management's estimate percentage of post tax real discount rate |  |  |  |  | 5.10% | 5.10% | 6.10% | 6.10% |  |
Eleonore NSR royalty [Member] | Increase [Member] |  |  |  |  |  |  |  |  |  |
Royalty, Stream And Other Interests [Line Items] |  |  |  |  |  |  |  |  |  |
Percentage of post tax real discount rate |  |  |  |  | 1.00% | 1.00% |  |  |  |
Eleonore NSR royalty [Member] | Decrease [Member] | Events after reporting period |  |  |  |  |  |  |  |  |  |
Royalty, Stream And Other Interests [Line Items] |  |  |  |  |  |  |  |  |  |
Gold and silver stream percentage decrease in reserves and resources | 50.00% |  |  |  |  |  |  |  |  |
Mantos Copper Sa Member | Mantos Blancos copper mine [Member] |  |  |  |  |  |  |  |  |  |
Royalty, Stream And Other Interests [Line Items] |  |  |  |  |  |  |  |  |  |
Silver stream percentage |  | 100.00% | 100.00% |  |  |  | 100.00% | 100.00% |  |
Tail stream |  | 40.00% | 40.00% |  |  |  | 30.00% | 30.00% |  |
Transfer price payment per ounces |  | 8.00% | 8.00% |  |  |  | 25.00% | 25.00% |  |
Refined silver delivered | Ounce |  | 19,300,000 | 19,300,000 |  |  |  |  |  |  |
Additional investments in royalty, stream and other interests |  |  |  |  | $ 33.4 |  |  |  | $ 25,000,000 |
Silver stream buy back percentage |  |  |  |  |  |  | 50.00% | 50.00% |  |
Lydian International Limited [Member] | Amulsar Stream And Offtake [Member] |  |  |  |  |  |  |  |  |  |
Royalty, Stream And Other Interests [Line Items] |  |  |  |  |  |  |  |  |  |
Impairment of royalty, stream and other interests |  | $ 13.1 | $ 9,900,000 |  | 66.7 | $ 51,300,000 | $ 4.7 | $ 3,600,000 |  |
Additional impairment of royalty stream and other interests |  |  |  |  |  |  | $ 2.6 | $ 2,000,000 |  |
Estimated recoverable amount |  | $ 97.0 | 73,700,000 |  | $ 29.0 | 22,300,000 |  |  |  |
Reasonable increase decrease in estimates, percentage |  |  |  |  |  |  | 10.00% |  |  | 10.00%
Long term gold price per ounce |  |  | 1,350 |  |  | 1,400 |  |  |  |
Long term silver price per ounce |  |  | $ 17.75 |  |  | $ 17.50 |  |  |  |
Percentage of post tax real discount rate |  | 6.10% | 6.10% |  | 10.10% | 10.10% | 1.00% | 1.00% |  |
Management estimated additional impairment charge |  |  |  |  |  |  | $ 5.8 | $ 4,500,000 |  |
Additional impairment charges on royalty and offtake interests, net of income taxes |  |  |  |  |  |  | 2.1 | 1,600,000 |  |
Osisko Bermuda Limited [Member] | Pretium Resources Inc [Member] | Brucejack gold and silver mine [Member] |  |  |  |  |  |  |  |  |  |
Royalty, Stream And Other Interests [Line Items] |  |  |  |  |  |  |  |  |  |
Repurchase option amount |  |  |  |  |  |  |  | 118,500,000 |  |
Proceeds from disposal of royalty, stream and other interests |  | $ 41.3 | $ 31,200,000 |  | $ 13.4 | $ 10,100,000 | $ 159.4 | $ 118,500,000 |  |
Proportion of ownership interest |  |  |  |  |  |  | 100.00% | 100.00% |  |
Gains on disposals of investment properties |  | 7.6 | 5,800,000 |  |  |  | $ 9.1 | $ 6,800,000 |  |
Book value |  |  |  |  |  |  | 150.3 |  |  | $ 111,700,000
Total Impairment |  |  |  |  |  |  | 159.0 |  |  |
Impairment loss recognised in profit or loss, investment property, net of tax |  |  |  |  |  |  | 118.3 |  |  |
Impairment of royalty, stream and other interests |  |  |  |  |  |  | 158.2 |  |  |
Impairment of royalty, stream and other interests, net of tax |  |  |  |  |  |  | 117.5 |  |  |
Amount receivable write-off |  |  |  |  |  |  | $ 0.8 |  |  |
Total proceeds |  | $ 54.7 | $ 41,300,000 |  |  |  |  |  |  |

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