XML 168 R95.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
PROPERTY, PLANT AND EQUIPMENT - Asset impairment - (Details)
$ in Millions
12 Months Ended
Dec. 31, 2020
$ / bbl
Dec. 31, 2019
CAD ($)
$ / bbl
$ / t
bbl
Dec. 31, 2018
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]      
Risk adjusted discount rate   7.50% 8.00%
Fort Hills CGU      
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]      
Impairment loss   $ 2,800  
Impairment loss, tax effects   910  
Oil Sands | Fort Hills CGU      
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]      
Impairment loss   2,800  
Impairment loss, tax effects   $ 910  
Risk adjusted discount rate   7.50%  
Recoverable amount of CGU   $ 7,700  
Reasonably possible decrease in unobservable input (as a percent)   5.00%  
Increase in impairment charge, due to decrease in unobservable input   $ 1,200  
Reasonably possible increase in unobservable input (as a percent)   1.00%  
Increase in impairment charge, due to increase in unobservable input   $ 900  
Oil Sands | Fort Hills CGU | Minimum      
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]      
Share of production per day | bbl   96,000  
Average cash operating costs per bbl | $ / bbl   22  
Cost of carbon compliance | $ / t   30  
Oil Sands | Fort Hills CGU | Maximum      
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]      
Share of production per day | bbl   106,000  
Average cash operating costs per bbl | $ / bbl   24  
Cost of carbon compliance | $ / t   50  
Oil Sands | Fort Hills CGU | 2020 | Forecast      
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]      
Oil price per unit | $ / bbl 40.75    
Oil Sands | Fort Hills CGU | 2021      
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]      
Oil price per unit | $ / bbl   45.60  
Oil Sands | Fort Hills CGU | 2022      
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]      
Oil price per unit | $ / bbl   49.65  
Oil Sands | Fort Hills CGU | 2023      
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]      
Oil price per unit | $ / bbl   51.55  
Oil Sands | Fort Hills CGU | 2024      
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]      
Oil price per unit | $ / bbl   52.90  
Oil Sands | Fort Hills CGU | Thereafter      
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]      
Oil price escalation percentage   2.00%  
Exploration and Production | White Rose CGU      
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]      
Impairment loss   $ 393  
Impairment loss, tax effects   $ 128  
Oil price escalation percentage   2.00%  
Share of production per day | bbl   8,700  
Share of future capital expenditure   $ 1,400  
Risk adjusted discount rate   9.00%  
Recoverable amount of CGU   $ 360  
Reasonably possible decrease in unobservable input (as a percent)   5.00%  
Increase in impairment charge, due to decrease in unobservable input   $ 85  
Reasonably possible increase in unobservable input (as a percent)   1.00%  
Increase in impairment charge, due to increase in unobservable input   $ 35  
Exploration and Production | White Rose CGU | Minimum      
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]      
Cost of carbon compliance | $ / t   30  
Exploration and Production | White Rose CGU | Maximum      
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]      
Cost of carbon compliance | $ / t   50  
Exploration and Production | White Rose CGU | 2020      
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]      
Oil price per unit | $ / bbl   65