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Royalty, stream and working interests - Impairments of Royalties, Streams and Working Interests (Details) | 1 Months Ended | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | ---
Nov. 30, 2017 USD ($) | Dec. 31, 2016 USD ($) | Mar. 31, 2020 USD ($) | Jun. 30, 2020 USD ($) item $ / shares $ / bbl | Nov. 13, 2012
Impairments |  |  |  |  |
Impairment of royalty, streams and working interests |  |  | $ 271,700,000 | $ 271,700,000 |
Recoverable amount of cash generating unit |  |  |  | $ 476,700,000 |
Edmonton Light prices (in US $/ barrels) | $ / bbl |  |  |  | 8.55 |
Exchange rate (US $ / Canadian dollar) | $ / shares |  |  |  | $ 0.72 |
WTI oil price increase (as percentage) |  |  |  | 2.00% |
Discount Rate increase (Percentage) |  |  |  | 1.00% |
Discount Rate decrease (Percentage) |  |  |  | 1.00% |
WTI Oil Price decrease (Percentage) |  |  |  | 10.00% |
WTI Oil Price increase (Percentage) |  |  |  | 10.00% |
Increase (Decrease) to impairment charges due to 1% increase in discount rate |  |  |  | $ 51.0 |
Increase (Decrease) to impairment charges due to 1% decrease in discount rate |  |  |  | (59.0) |
Increase (Decrease) to impairment charges due to 10% increase in WTI oil prices |  |  |  | 77.6 |
Increase (Decrease) to impairment charges due to 10% decrease in WTI oil prices |  |  |  | (76.3) |
Remainder of 2020 |  |  |  |  |
Impairments |  |  |  |  |
WTI oil price (in US $/ barrels) |  |  |  | 30.00 |
2021 |  |  |  |  |
Impairments |  |  |  |  |
WTI oil price (in US $/ barrels) |  |  |  | 41.18 |
2022 |  |  |  |  |
Impairments |  |  |  |  |
WTI oil price (in US $/ barrels) |  |  |  | 49.88 |
2023 |  |  |  |  |
Impairments |  |  |  |  |
WTI oil price (in US $/ barrels) |  |  |  | 55.87 |
2024 |  |  |  |  |
Impairments |  |  |  |  |
WTI oil price (in US $/ barrels) |  |  |  | $ 57.98 |
SCOOP/STACK |  |  |  |  |
Impairments |  |  |  |  |
Number of package acquired | item |  |  |  | 2 |
Royalty rights acquired | $ 27,600,000 | $ 100,000,000 |  |  |
Impairment of royalty, streams and working interests |  |  |  | $ 207,200,000 |
Recoverable amount of cash generating unit |  |  |  | 309,200,000 |
Increase (Decrease) to impairment charges due to 1% increase in discount rate |  |  |  | 34.1 |
Increase (Decrease) to impairment charges due to 1% decrease in discount rate |  |  |  | (39.9) |
Increase (Decrease) to impairment charges due to 10% increase in WTI oil prices |  |  |  | 37.8 |
Increase (Decrease) to impairment charges due to 10% decrease in WTI oil prices |  |  |  | $ (37.3) |
Weyburn |  |  |  |  |
Impairments |  |  |  |  |
Percentage of NRI |  |  |  |  | 11.71%
Percentage of ORR |  |  |  | 0.44% |
Percentage of WI |  |  |  | 2.56% |
Impairment of royalty, streams and working interests |  |  |  | $ 60,500,000 |
Recoverable amount of cash generating unit |  |  |  | $ 162,800,000 |
Change In Discount Rate Assumptions Applied To Cash Flow Projection Impairment Analysis |  |  |  | 9.50% |
Change in discount rate assumption for impairment analysis (as a percent) |  |  |  | 9.50% |
Oil well equipment |  |  |  |  |
Impairments |  |  |  |  |
Impairment of royalty, streams and working interests |  |  |  | $ 4,000,000 |
Recoverable amount of cash generating unit |  |  |  | 4,700,000 |
Weyburn and oil well equipment |  |  |  |  |
Impairments |  |  |  |  |
Increase (Decrease) to impairment charges due to 1% increase in discount rate |  |  |  | 16.9 |
Increase (Decrease) to impairment charges due to 1% decrease in discount rate |  |  |  | (19.1) |
Increase (Decrease) to impairment charges due to 10% increase in WTI oil prices |  |  |  | 39.8 |
Increase (Decrease) to impairment charges due to 10% decrease in WTI oil prices |  |  |  | $ (39.0) |
Bottom | SCOOP/STACK |  |  |  |  |
Impairments |  |  |  |  |
Change In Discount Rate Assumptions Applied To Cash Flow Projection Impairment Analysis |  |  |  | 5.00% |
Change in discount rate assumption for impairment analysis (as a percent) |  |  |  | 5.00% |
Top | SCOOP/STACK |  |  |  |  |
Impairments |  |  |  |  |
Change In Discount Rate Assumptions Applied To Cash Flow Projection Impairment Analysis |  |  |  | 12.00% |
Change in discount rate assumption for impairment analysis (as a percent) |  |  |  | 12.00% |

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