ASSET IMPAIRMENT (Details) $ in Millions | 3 Months Ended | 6 Months Ended |
Dec. 31, 2021CAD ($)$ / bblbbl / d$ / bbl$ / $ | Sep. 30, 2021CAD ($)$ / bblbbl / d | Dec. 31, 2020CAD ($)bbl / d$ / bbl$ / bblitem$ / $ | Mar. 31, 2020CAD ($)$ / shares$ / bbl$ / sharesbbl / ditem$ / $ | Jun. 30, 2021 |
Fort Hills CGU | | | | | |
ASSET IMPAIRMENT | | | | | |
Recoverable amount of CGU | | | $ 5,700 | $ 6,400 | |
Reversal of impairment loss | | | $ 0 | | |
Fort Hills CGU | Sensitivity analysis, increase in price | | | | | |
ASSET IMPAIRMENT | | | | | |
Reasonably possible increase in unobservable input (as a percent) | | | 5.00% | | |
Increase to (reversal of) impairment charge, due to increase in unobservable input | | | $ (1,000) | | |
Fort Hills CGU | Sensitivity analysis, decrease in price | | | | | |
ASSET IMPAIRMENT | | | | | |
Reasonably possible decrease in unobservable input (as a percent) | | | | 5.00% | |
Increase to (reversal of) impairment charge, due to decrease in unobservable input | | | | $ 1,100 | |
Fort Hills CGU | Sensitivity analysis increase In discount rate | | | | | |
ASSET IMPAIRMENT | | | | | |
Reasonably possible increase in unobservable input (as a percent) | | | | 1.00% | |
Increase to (reversal of) impairment charge, due to increase in unobservable input | | | | $ 1,100 | |
Fort Hills CGU | Sensitivity analysis, decrease in discount rate | | | | | |
ASSET IMPAIRMENT | | | | | |
Reasonably possible decrease in unobservable input (as a percent) | | | 1.00% | | |
Increase to (reversal of) impairment charge, due to decrease in unobservable input | | | $ (900) | | |
Terra Nova CGU | | | | | |
ASSET IMPAIRMENT | | | | | |
Ownership interest (as percent) | | 48.00% | | | 38.00% |
Consideration received, net of tax | | $ 26 | | | |
Tax effect of consideration received | | $ 8 | | | |
Additional interest acquired (as a percent) | | 10.00% | | | |
Recoverable amount of CGU | | $ 177 | | 24 | |
White Rose CGU | | | | | |
ASSET IMPAIRMENT | | | | | |
Recoverable amount of CGU | | | | $ 185 | |
White Rose CGU | Sensitivity analysis, decrease in price | | | | | |
ASSET IMPAIRMENT | | | | | |
Reasonably possible decrease in unobservable input (as a percent) | | | | 5.00% | |
Increase to (reversal of) impairment charge, due to decrease in unobservable input | | | | $ 83 | |
White Rose CGU | Sensitivity analysis increase In discount rate | | | | | |
ASSET IMPAIRMENT | | | | | |
Reasonably possible increase in unobservable input (as a percent) | | | | 1.00% | |
Increase to (reversal of) impairment charge, due to increase in unobservable input | | | | $ 45 | |
White Rose CGU | WWR Project | | | | | |
ASSET IMPAIRMENT | | | | | |
Impairment loss, net of tax | | | 423 | | |
Tax effect of impairment loss | | | $ 136 | | |
Oil Sands | Fort Hills CGU | | | | | |
ASSET IMPAIRMENT | | | | | |
Impairment testing assumption, foreign exchange rate | $ / $ | 0.80 | | | | |
Impairment testing assumption, risk-adjusted discount rate, after tax | 7.50% | | 7.50% | | |
Recoverable amount of CGU | $ 5,500 | | | | |
Impairment loss, net of tax | $ 0 | | | | |
Oil Sands | Fort Hills CGU | Minimum | | | | | |
ASSET IMPAIRMENT | | | | | |
Impairment testing assumption, share of barrels per day of crude oil produced | bbl / d | 94,000 | | | | |
Impairment testing assumption, average cash operating costs per bbl | $ / bbl | 22 | | | | |
Oil Sands | Fort Hills CGU | Maximum | | | | | |
ASSET IMPAIRMENT | | | | | |
Impairment testing assumption, share of barrels per day of crude oil produced | bbl / d | 111,000 | | | | |
Impairment testing assumption, average cash operating costs per bbl | $ / bbl | 23 | | | | |
Oil Sands | Fort Hills CGU | Forecast for 2021 | | | | | |
ASSET IMPAIRMENT | | | | | |
Impairment testing assumption, foreign exchange rate | $ / $ | | | 0.76 | | |
Oil Sands | Fort Hills CGU | Forecast after 2021 | | | | | |
ASSET IMPAIRMENT | | | | | |
Impairment testing assumption, foreign exchange rate | $ / $ | | | 0.80 | | |
Oil Sands | Fort Hills CGU | Forecast through 2022 | | | | | |
ASSET IMPAIRMENT | | | | | |
Impairment testing assumption, share of barrels per day of crude oil produced | bbl / d | | | 74,000 | | |
Impairment testing assumption, average cash operating costs per bbl | $ / bbl | | | 25.50 | | |
Impairment testing assumption, number of extraction trains | item | | | 2 | | |
Oil Sands | Fort Hills CGU | Forecast after 2022 | Minimum | | | | | |
ASSET IMPAIRMENT | | | | | |
Impairment testing assumption, share of barrels per day of crude oil produced | bbl / d | | | 97,000 | | |
Impairment testing assumption, average cash operating costs per bbl | $ / bbl | | | 19 | | |
Oil Sands | Fort Hills CGU | Forecast after 2022 | Maximum | | | | | |
ASSET IMPAIRMENT | | | | | |
Impairment testing assumption, share of barrels per day of crude oil produced | bbl / d | | | 105,000 | | |
Impairment testing assumption, average cash operating costs per bbl | $ / bbl | | | 23 | | |
Oil Sands | Fort Hills CGU | Sensitivity analysis, decrease in price | | | | | |
ASSET IMPAIRMENT | | | | | |
Reasonably possible decrease in unobservable input (as a percent) | 5.00% | | | | |
Impairment loss, net of tax | $ 1,000 | | | | |
Oil Sands | Fort Hills CGU | Sensitivity analysis increase In discount rate | | | | | |
ASSET IMPAIRMENT | | | | | |
Reasonably possible increase in unobservable input (as a percent) | 1.00% | | | | |
Impairment loss, net of tax | $ 500 | | | | |
Oil Sands | Fort Hills CGU | Western Canadian Select crude oil | Forecast for 2021 | | | | | |
ASSET IMPAIRMENT | | | | | |
Impairment testing assumption, price per barrel | $ / bbl | | | 32 | | |
Oil Sands | Fort Hills CGU | Western Canadian Select crude oil | Forecast for 2022 | | | | | |
ASSET IMPAIRMENT | | | | | |
Impairment testing assumption, price per barrel | $ / bbl | 55 | | 41.15 | | |
Oil Sands | Fort Hills CGU | Western Canadian Select crude oil | Forecast for 2023 | | | | | |
ASSET IMPAIRMENT | | | | | |
Impairment testing assumption, price per barrel | $ / bbl | 54.57 | | 47.50 | | |
Oil Sands | Fort Hills CGU | Western Canadian Select crude oil | Forecast for 2024 | | | | | |
ASSET IMPAIRMENT | | | | | |
Impairment testing assumption, price per barrel | $ / bbl | | | 49.50 | | |
Oil Sands | Fort Hills CGU | Western Canadian Select crude oil | Forecast for 2024 to 2031 | | | | | |
ASSET IMPAIRMENT | | | | | |
Impairment testing assumption, price per barrel | $ / bbl | 50.86 | | | | |
Impairment testing assumption, price per barrel escalation percentage | 2.00% | | | | |
Oil Sands | Fort Hills CGU | Western Canadian Select crude oil | Forecast for 2025 to 2064 | | | | | |
ASSET IMPAIRMENT | | | | | |
Impairment testing assumption, price per barrel escalation percentage | | | 2.00% | | |
Oil Sands | Fort Hills CGU | Fort Hills Project | | | | | |
ASSET IMPAIRMENT | | | | | |
Impairment testing assumption, foreign exchange rate | $ / $ | | | | 0.76 | |
Impairment testing assumption, risk-adjusted discount rate, after tax | | | | 7.50% | |
Impairment loss, net of tax | | | | $ 1,380 | |
Tax effect of impairment loss | | | | $ 440 | |
Oil Sands | Fort Hills CGU | Fort Hills Project | Forecast for remainder of 2020 and 2021 | | | | | |
ASSET IMPAIRMENT | | | | | |
Impairment testing assumption, share of barrels per day of crude oil produced | bbl / d | | | | 47,000 | |
Impairment testing assumption, number of extraction trains | item | | | | 1 | |
Oil Sands | Fort Hills CGU | Fort Hills Project | Forecast for remainder of 2020 and 2021 | Minimum | | | | | |
ASSET IMPAIRMENT | | | | | |
Impairment testing assumption, average cash operating costs per bbl | $ / shares | | | | 32 | |
Oil Sands | Fort Hills CGU | Fort Hills Project | Forecast for remainder of 2020 and 2021 | Maximum | | | | | |
ASSET IMPAIRMENT | | | | | |
Impairment testing assumption, average cash operating costs per bbl | $ / shares | | | | 37 | |
Oil Sands | Fort Hills CGU | Fort Hills Project | Forecast after 2021 | | | | | |
ASSET IMPAIRMENT | | | | | |
Impairment testing assumption, number of extraction trains | item | | | | 2 | |
Oil Sands | Fort Hills CGU | Fort Hills Project | Forecast after 2021 | Minimum | | | | | |
ASSET IMPAIRMENT | | | | | |
Impairment testing assumption, average cash operating costs per bbl | $ / shares | | | | 22 | |
Oil Sands | Fort Hills CGU | Fort Hills Project | Forecast after 2021 | Maximum | | | | | |
ASSET IMPAIRMENT | | | | | |
Impairment testing assumption, average cash operating costs per bbl | $ / shares | | | | 24 | |
Oil Sands | Fort Hills CGU | Fort Hills Project | Forecast for 2022 | | | | | |
ASSET IMPAIRMENT | | | | | |
Impairment testing assumption, number of extraction trains | item | | | | 2 | |
Oil Sands | Fort Hills CGU | Fort Hills Project | Forecast after 2022 | Minimum | | | | | |
ASSET IMPAIRMENT | | | | | |
Impairment testing assumption, share of barrels per day of crude oil produced | bbl / d | | | | 96,000 | |
Oil Sands | Fort Hills CGU | Fort Hills Project | Forecast after 2022 | Maximum | | | | | |
ASSET IMPAIRMENT | | | | | |
Impairment testing assumption, share of barrels per day of crude oil produced | bbl / d | | | | 106,000 | |
Oil Sands | Fort Hills CGU | Fort Hills Project | Western Canadian Select crude oil | Forecast for remainder of 2020 | | | | | |
ASSET IMPAIRMENT | | | | | |
Impairment testing assumption, price per barrel | $ / bbl | | | | 9 | |
Oil Sands | Fort Hills CGU | Fort Hills Project | Western Canadian Select crude oil | Forecast for 2021 | | | | | |
ASSET IMPAIRMENT | | | | | |
Impairment testing assumption, price per barrel | $ / bbl | | | | 13.60 | |
Oil Sands | Fort Hills CGU | Fort Hills Project | Western Canadian Select crude oil | Forecast for 2022 | | | | | |
ASSET IMPAIRMENT | | | | | |
Impairment testing assumption, price per barrel | $ / bbl | | | | 32 | |
Oil Sands | Fort Hills CGU | Fort Hills Project | Western Canadian Select crude oil | Forecast for 2023 | | | | | |
ASSET IMPAIRMENT | | | | | |
Impairment testing assumption, price per barrel | $ / bbl | | | | 51.55 | |
Oil Sands | Fort Hills CGU | Fort Hills Project | Western Canadian Select crude oil | Forecast for 2024 | | | | | |
ASSET IMPAIRMENT | | | | | |
Impairment testing assumption, price per barrel | $ / bbl | | | | 52.90 | |
Oil Sands | Fort Hills CGU | Fort Hills Project | Western Canadian Select crude oil | Forecast for 2025 through 2061 | | | | | |
ASSET IMPAIRMENT | | | | | |
Impairment testing assumption, price per barrel escalation percentage | | | | 2.00% | |
Exploration and Production | Terra Nova CGU | | | | | |
ASSET IMPAIRMENT | | | | | |
Reversal of impairment loss, net of tax | | 168 | | | |
Tax effect of the reversal of impairment loss | | $ 53 | | | |
Impairment testing assumption, share of barrels per day of crude oil produced | bbl / d | | | | 6,200 | |
Impairment testing assumption, risk-adjusted discount rate, after tax | | 9.00% | | 9.00% | |
Impairment loss, net of tax | | | | $ 285 | |
Tax effect of impairment loss | | | | $ 93 | |
Exploration and Production | Terra Nova CGU | Forecast for 2022 | | | | | |
ASSET IMPAIRMENT | | | | | |
Impairment testing assumption, share of barrels per day of crude oil produced | bbl / d | | 6,000 | | | |
Impairment testing assumption, percentage of working interest | | 38.00% | | | |
Exploration and Production | Terra Nova CGU | Brent crude oil | Forecast for remainder of 2020 | | | | | |
ASSET IMPAIRMENT | | | | | |
Impairment testing assumption, price per barrel | $ / bbl | | | | 30 | |
Exploration and Production | Terra Nova CGU | Brent crude oil | Forecast for 2021 | | | | | |
ASSET IMPAIRMENT | | | | | |
Impairment testing assumption, price per barrel | $ / bbl | | | | 35 | |
Exploration and Production | Terra Nova CGU | Brent crude oil | Forecast for 2022 | | | | | |
ASSET IMPAIRMENT | | | | | |
Impairment testing assumption, price per barrel | $ / shares | | | | 50 | |
Exploration and Production | Terra Nova CGU | Brent crude oil | Forecast for 2023 | | | | | |
ASSET IMPAIRMENT | | | | | |
Impairment testing assumption, price per barrel | | 65 | | 69 | |
Exploration and Production | Terra Nova CGU | Brent crude oil | Forecast for 2024 | | | | | |
ASSET IMPAIRMENT | | | | | |
Impairment testing assumption, price per barrel | $ / bbl | | 68 | | | |
Exploration and Production | Terra Nova CGU | Brent crude oil | Forecast for 2024 to 2031 | | | | | |
ASSET IMPAIRMENT | | | | | |
Impairment testing assumption, price per barrel escalation percentage | | | | 2.00% | |
Exploration and Production | Terra Nova CGU | Brent crude oil | Forecast for 2025 to 2033 | | | | | |
ASSET IMPAIRMENT | | | | | |
Impairment testing assumption, price per barrel escalation percentage | | 2.00% | | | |
Exploration and Production | White Rose CGU | | | | | |
ASSET IMPAIRMENT | | | | | |
Impairment testing assumption, share of future capital expenditure | | | | $ 1,435 | |
Impairment testing assumption, risk-adjusted discount rate, after tax | | | | 9.00% | |
Impairment loss, net of tax | | | | $ 137 | |
Tax effect of impairment loss | | | | $ 45 | |
Exploration and Production | White Rose CGU | Brent crude oil | Forecast | | | | | |
ASSET IMPAIRMENT | | | | | |
Impairment testing assumption, share of barrels per day of crude oil produced | bbl / d | | | | 9,800 | |
Exploration and Production | White Rose CGU | Brent crude oil | Forecast for remainder of 2020 | | | | | |
ASSET IMPAIRMENT | | | | | |
Impairment testing assumption, price per barrel | $ / bbl | | | | 30 | |
Exploration and Production | White Rose CGU | Brent crude oil | Forecast for 2021 | | | | | |
ASSET IMPAIRMENT | | | | | |
Impairment testing assumption, price per barrel | $ / bbl | | | | 35 | |
Exploration and Production | White Rose CGU | Brent crude oil | Forecast for 2022 | | | | | |
ASSET IMPAIRMENT | | | | | |
Impairment testing assumption, price per barrel | $ / shares | | | | 50 | |
Exploration and Production | White Rose CGU | Brent crude oil | Forecast for 2023 | | | | | |
ASSET IMPAIRMENT | | | | | |
Impairment testing assumption, price per barrel | $ / shares | | | | 69 | |
Exploration and Production | White Rose CGU | Brent crude oil | Forecast for 2024 to 2036 | | | | | |
ASSET IMPAIRMENT | | | | | |
Impairment testing assumption, price per barrel escalation percentage | | | | 2.00% | |