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Oil and Gas Properties - Recoverable Amount Of Company CGUs (Details) - Company's CGUs | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Mar. 31, 2020 usdPerBbl $ / MMBTU cadPerBbl $ / MMBTU canadianDollarPerUsDollar | Jun. 30, 2021 cadPerBbl $ / MMBTU usdPerBbl $ / MMBTU $ / $ | Dec. 31, 2021 usdPerBbl cadPerBbl $ / MMBTU $ / $ $ / MMBTU | Dec. 31, 2020 $ / $ usdPerBbl $ / MMBTU cadPerBbl $ / MMBTU
Year 1 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Average foreign exchange rate (in dollars per share) | 1.41 | 1.24 | 1.26 | 1.30
Year 2 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Average foreign exchange rate (in dollars per share) | 1.37 | 1.25 | 1.26 | 1.31
Year 3 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Average foreign exchange rate (in dollars per share) | 1.34 | 1.25 | 1.26 | 1.31
Year 4 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Average foreign exchange rate (in dollars per share) | 1.34 | 1.25 | 1.26 | 1.31
Year 5 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Average foreign exchange rate (in dollars per share) | 1.34 | 1.25 | 1.26 | 1.31
Year 6 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Average foreign exchange rate (in dollars per share) | 1.33 | 1.25 | 1.26 | 1.31
Year 7 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Average foreign exchange rate (in dollars per share) | 1.33 | 1.25 | 1.26 | 1.31
Year 8 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Average foreign exchange rate (in dollars per share) | 1.33 | 1.25 | 1.26 | 1.31
Year 9 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Average foreign exchange rate (in dollars per share) | 1.33 | 1.25 | 1.26 | 1.31
Year 10 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Average foreign exchange rate (in dollars per share) | 1.33 | 1.25 | 1.26 | 1.31
WTI | Oil reserves | Year 1 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price | usdPerBbl | 29.17 | 71.33 | 72.83 | 47.17
WTI | Oil reserves | Year 2 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price | usdPerBbl | 40.45 | 67.20 | 68.78 | 50.17
WTI | Oil reserves | Year 3 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price | usdPerBbl | 49.17 | 63.95 | 66.76 | 53.17
WTI | Oil reserves | Year 4 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price | usdPerBbl | 53.28 | 63.23 | 68.09 | 54.97
WTI | Oil reserves | Year 5 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price | usdPerBbl | 55.66 | 64.50 | 69.45 | 56.07
WTI | Oil reserves | Year 6 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price | usdPerBbl | 56.87 | 65.79 | 70.84 | 57.19
WTI | Oil reserves | Year 7 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price | usdPerBbl | 58.01 | 67.10 | 72.26 | 58.34
WTI | Oil reserves | Year 8 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price | usdPerBbl | 59.17 | 68.44 | 73.70 | 59.50
WTI | Oil reserves | Year 9 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price | usdPerBbl | 60.35 | 69.81 | 75.18 | 60.69
WTI | Oil reserves | Year 10 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price | usdPerBbl | 61.56 | 71.21 | 76.68 | 61.91
WCS | Oil reserves | Year 1 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price | cadPerBbl | 19.21 | 72.22 | 74.42 | 44.63
WCS | Oil reserves | Year 2 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price | cadPerBbl | 34.65 | 66.84 | 69.17 | 48.18
WCS | Oil reserves | Year 3 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price | cadPerBbl | 46.34 | 61.73 | 66.54 | 52.10
WCS | Oil reserves | Year 4 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price | cadPerBbl | 51.25 | 60.70 | 67.87 | 54.10
WCS | Oil reserves | Year 5 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price | cadPerBbl | 54.28 | 61.91 | 69.23 | 55.19
WCS | Oil reserves | Year 6 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price | cadPerBbl | 55.72 | 63.15 | 70.61 | 56.29
WCS | Oil reserves | Year 7 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price | cadPerBbl | 56.96 | 64.42 | 72.02 | 57.42
WCS | Oil reserves | Year 8 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price | cadPerBbl | 58.22 | 65.70 | 73.46 | 58.57
WCS | Oil reserves | Year 9 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price | cadPerBbl | 59.51 | 67.02 | 74.69 | 59.74
WCS | Oil reserves | Year 10 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price | cadPerBbl | 60.82 | 68.36 | 76.19 | 60.93
LLS | Oil reserves | Year 1 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price | usdPerBbl | 32.17 | 72.17 | 74.33 | 49.50
LLS | Oil reserves | Year 2 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price | usdPerBbl | 43.80 | 68.53 | 70.28 | 52.85
LLS | Oil reserves | Year 3 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price | usdPerBbl | 52.55 | 65.80 | 68.27 | 55.87
LLS | Oil reserves | Year 4 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price | usdPerBbl | 56.68 | 65.10 | 69.62 | 57.69
LLS | Oil reserves | Year 5 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price | usdPerBbl | 59.10 | 66.39 | 71.01 | 58.82
LLS | Oil reserves | Year 6 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price | usdPerBbl | 60.35 | 67.71 | 72.41 | 59.97
LLS | Oil reserves | Year 7 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price | usdPerBbl | 61.52 | 69.05 | 73.85 | 61.15
LLS | Oil reserves | Year 8 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price | usdPerBbl | 62.72 | 70.42 | 75.32 | 62.34
LLS | Oil reserves | Year 9 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price | usdPerBbl | 63.94 | 71.82 | 76.82 | 63.56
LLS | Oil reserves | Year 10 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price | usdPerBbl | 65.19 | 73.26 | 78.35 | 64.83
Edmonton Par | Oil reserves | Year 1 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price | cadPerBbl | 29.22 | 83.20 | 86.82 | 55.76
Edmonton Par | Oil reserves | Year 2 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price | cadPerBbl | 46.85 | 78.27 | 80.73 | 59.89
Edmonton Par | Oil reserves | Year 3 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price | cadPerBbl | 59.27 | 74.06 | 78.01 | 63.48
Edmonton Par | Oil reserves | Year 4 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price | cadPerBbl | 65.02 | 73.05 | 79.57 | 65.76
Edmonton Par | Oil reserves | Year 5 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price | cadPerBbl | 68.43 | 74.51 | 81.16 | 67.13
Edmonton Par | Oil reserves | Year 6 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price | cadPerBbl | 69.81 | 76.00 | 82.78 | 68.53
Edmonton Par | Oil reserves | Year 7 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price | cadPerBbl | 71.24 | 77.52 | 84.44 | 69.95
Edmonton Par | Oil reserves | Year 8 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price | cadPerBbl | 72.70 | 79.07 | 86.13 | 71.40
Edmonton Par | Oil reserves | Year 9 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price | cadPerBbl | 74.19 | 80.66 | 87.85 | 72.88
Edmonton Par | Oil reserves | Year 10 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price | cadPerBbl | 75.71 | 82.27 | 89.61 | 74.34
Henry Hub | Oil reserves | Year 1 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price |  |  |  | 2.83
Henry Hub | Oil reserves | Year 2 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price |  |  |  | 2.87
Henry Hub | Oil reserves | Year 3 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price |  |  |  | 2.90
Henry Hub | Oil reserves | Year 4 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price |  |  |  | 2.96
Henry Hub | Oil reserves | Year 5 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price |  |  |  | 3.02
Henry Hub | Oil reserves | Year 6 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price |  |  |  | 3.08
Henry Hub | Oil reserves | Year 7 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price |  |  |  | 3.14
Henry Hub | Oil reserves | Year 8 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price |  |  |  | 3.20
Henry Hub | Oil reserves | Year 9 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price |  |  |  | 3.26
Henry Hub | Oil reserves | Year 10 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price |  |  |  | 3.33
Henry Hub | Natural gas reserves | Year 1 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price | 2.10 | 3.42 | 3.85 |
Henry Hub | Natural gas reserves | Year 2 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price | 2.58 | 3.19 | 3.44 |
Henry Hub | Natural gas reserves | Year 3 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price | 2.79 | 2.92 | 3.17 |
Henry Hub | Natural gas reserves | Year 4 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price | 2.86 | 2.96 | 3.24 |
Henry Hub | Natural gas reserves | Year 5 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price | 2.93 | 3.02 | 3.30 |
Henry Hub | Natural gas reserves | Year 6 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price | 3.00 | 3.08 | 3.37 |
Henry Hub | Natural gas reserves | Year 7 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price | 3.07 | 3.14 | 3.44 |
Henry Hub | Natural gas reserves | Year 8 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price | 3.13 | 3.21 | 3.50 |
Henry Hub | Natural gas reserves | Year 9 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price | 3.19 | 3.27 | 3.58 |
Henry Hub | Natural gas reserves | Year 10 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price | 3.25 | 3.34 | 3.65 |
AECO | Natural gas reserves | Year 1 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price | 1.74 | 3.46 | 3.56 | 2.78
AECO | Natural gas reserves | Year 2 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price | 2.20 | 3.13 | 3.21 | 2.70
AECO | Natural gas reserves | Year 3 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price | 2.38 | 2.72 | 3.05 | 2.61
AECO | Natural gas reserves | Year 4 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price | 2.45 | 2.71 | 3.11 | 2.65
AECO | Natural gas reserves | Year 5 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price | 2.53 | 2.76 | 3.17 | 2.70
AECO | Natural gas reserves | Year 6 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price | 2.60 | 2.82 | 3.23 | 2.76
AECO | Natural gas reserves | Year 7 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price | 2.66 | 2.88 | 3.30 | 2.81
AECO | Natural gas reserves | Year 8 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price | 2.72 | 2.94 | 3.36 | 2.87
AECO | Natural gas reserves | Year 9 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price | 2.79 | 2.99 | 3.43 | 2.92
AECO | Natural gas reserves | Year 10 |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Commodity sales price | 2.85 | 3.05 | 3.50 | 2.98

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