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Acquisitions and Dispositions - Narrative (Details) - Surmont
$ in Billions
3 Months Ended
Oct. 04, 2023
CAD ($)
Oct. 04, 2023
USD ($)
Mar. 31, 2024
USD ($)
Oct. 04, 2023
USD ($)
Asset Acquisition [Line Items]        
Percentage of interest acquired 50.00%     50.00%
Final Consideration $ 4.1 $ 3,000,000,000    
Business acquisition, maximum payment $ 0.4     $ 320,000,000
Business acquisition, contingent payment term 5 years 5 years    
Business acquisition, cost per every dollar exceeding threshold   $ 2,000,000    
Business acquisition, threshold (dollars per barrel)       52
Contingent consideration, outcome, high       $ 300,000,000
Business acquisition, contingent payments     $ 12,000,000  
Proved properties       2,900,000,000
Unproved properties       $ 200,000,000