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v3.22.4

Impairment Charges and Reversals - Sensitivity (Details) - CAD ($) $ in Millions | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2020 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Clearwater |  |  |  |
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items] |  |  |  |
Increase through change in discount rate, impairments |  |  |  | $ 7
Decrease through change in discount rate, impairments |  |  |  | (7)
Five percent increase through change in forward price estimates, Impairments |  |  |  | (68)
Five percent decrease through change in forward price estimates, Impairments |  |  |  | 128
Elmworth-Wapiti |  |  |  |
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items] |  |  |  |
Increase through change in discount rate, impairments |  |  |  | 10
Decrease through change in discount rate, impairments |  |  |  | (10)
Five percent increase through change in forward price estimates, Impairments |  |  |  | (71)
Five percent decrease through change in forward price estimates, Impairments |  |  |  | 126
Kaybob-Edson |  |  |  |
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items] |  |  |  |
Increase through change in discount rate, impairments |  |  |  | 17
Decrease through change in discount rate, impairments |  |  |  | (19)
Five percent increase through change in forward price estimates, Impairments |  |  |  | (71)
Five percent decrease through change in forward price estimates, Impairments |  |  |  | $ 140
Borger, Wood River, and Lima CGUs |  |  |  |
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items] |  |  |  |
Increase through change in discount rate, impairments |  | $ 69 | $ 251 |
Decrease through change in discount rate, impairments |  | (65) | (283) |
Five percent increase through change in forward price estimates, Impairments |  | (268) | (990) |
Five percent decrease through change in forward price estimates, Impairments |  | 268 | $ 996 |
One percent increase through change in discount rate, impairment reversal |  | (72) |  |
One percent decrease through change in discount rate, impairment reversal |  | 14 |  |
Five percent increase through change in forward price estimates, impairment reversal |  | 168 |  |
Five percent decrease through change in forward price estimates, impairment reversal |  | $ (342) |  |
Borger CGU |  |  |  |
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items] |  |  |  |
Increase through change in discount rate, impairments | $ 89 |  |  |
Decrease through change in discount rate, impairments | (110) |  |  |
Five percent increase through change in forward price estimates, Impairments | (348) |  |  |
Five percent decrease through change in forward price estimates, Impairments | $ 342 |  |  |

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