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Impairment Charges and Reversals - Forward Price Assumptions (Details)
Dec. 31, 2024
$ / bbl
$ / bbl
share
$ / Mcf
Dec. 31, 2023
$ / Mcf
$ / bbl
$ / bbl
WTI | 1 Year    
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]    
Long-term price assumptions used in current measurement of fair value less costs of disposal 71.58 73.67
Long-term price assumptions used to determine future cash flows | share 77.68  
WTI | 2 Years    
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]    
Long-term price assumptions used in current measurement of fair value less costs of disposal 74.48 74.98
Long-term price assumptions used to determine future cash flows | share 77.07  
WTI | 3 Years    
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]    
Long-term price assumptions used in current measurement of fair value less costs of disposal 75.81 76.14
Long-term price assumptions used to determine future cash flows | share 78.74  
WTI | 4 Years    
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]    
Long-term price assumptions used in current measurement of fair value less costs of disposal 77.66 77.66
Long-term price assumptions used to determine future cash flows | share 81.51  
WTI | 5 Years    
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]    
Long-term price assumptions used in current measurement of fair value less costs of disposal 79.22 79.22
Long-term price assumptions used to determine future cash flows | share 83.14  
WTI | Thereafter    
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]    
Forward price, average annual increase 2.00% 2.00%
Western Canada Select | 1 Year    
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]    
Long-term price assumptions used in current measurement of fair value less costs of disposal 82.69 76.74
Western Canada Select | 2 Years    
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]    
Long-term price assumptions used in current measurement of fair value less costs of disposal 84.27 79.77
Western Canada Select | 3 Years    
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]    
Long-term price assumptions used in current measurement of fair value less costs of disposal 83.81 81.12
Western Canada Select | 4 Years    
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]    
Long-term price assumptions used in current measurement of fair value less costs of disposal 85.70 82.88
Western Canada Select | 5 Years    
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]    
Long-term price assumptions used in current measurement of fair value less costs of disposal 87.45 85.04
Western Canada Select | Thereafter    
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]    
Forward price, average annual increase 2.00% 2.00%
Edmonton C5+ | 1 Year    
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]    
Long-term price assumptions used in current measurement of fair value less costs of disposal 100.14 96.79
Edmonton C5+ | 2 Years    
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]    
Long-term price assumptions used in current measurement of fair value less costs of disposal 100.72 98.75
Edmonton C5+ | 3 Years    
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]    
Long-term price assumptions used in current measurement of fair value less costs of disposal 100.24 100.71
Edmonton C5+ | 4 Years    
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]    
Long-term price assumptions used in current measurement of fair value less costs of disposal 102.73 102.72
Edmonton C5+ | 5 Years    
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]    
Long-term price assumptions used in current measurement of fair value less costs of disposal 104.79 104.78
Edmonton C5+ | Thereafter    
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]    
Forward price, average annual increase 2.00% 2.00%
Alberta Energy Company Natural Gas | 1 Year    
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]    
Long-term price assumptions used in current measurement of fair value less costs of disposal | $ / Mcf 2.36 2.20
Alberta Energy Company Natural Gas | 2 Years    
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]    
Long-term price assumptions used in current measurement of fair value less costs of disposal | $ / Mcf 3.33 3.37
Alberta Energy Company Natural Gas | 3 Years    
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]    
Long-term price assumptions used in current measurement of fair value less costs of disposal | $ / Mcf 3.48 4.05
Alberta Energy Company Natural Gas | 4 Years    
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]    
Long-term price assumptions used in current measurement of fair value less costs of disposal | $ / Mcf 3.69 4.13
Alberta Energy Company Natural Gas | 5 Years    
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]    
Long-term price assumptions used in current measurement of fair value less costs of disposal | $ / Mcf 3.76 4.21
Alberta Energy Company Natural Gas | Thereafter    
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]    
Forward price, average annual increase 2.00% 2.00%
Chicago 3-2-1 Crack Spread | 1 Year    
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]    
Long-term price assumptions used to determine future cash flows | share 20.01  
Chicago 3-2-1 Crack Spread | 2 Years    
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]    
Long-term price assumptions used to determine future cash flows | share 21.97  
Chicago 3-2-1 Crack Spread | 3 Years    
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]    
Long-term price assumptions used to determine future cash flows | share 22.60  
Chicago 3-2-1 Crack Spread | 4 Years    
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]    
Long-term price assumptions used to determine future cash flows | share 23.87  
Chicago 3-2-1 Crack Spread | 5 Years    
Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]    
Long-term price assumptions used to determine future cash flows | share 24.66