v3.25.4
Common shares - Narrative (Detail) - shares
Jun. 29, 2025
Jun. 15, 2025
Class of Stock [Line Items]    
Normal course issuer bid share repurchase term, months 12 months  
Normal Course Issuer Bid Effective From June Twenty Ninth Two Thousand And Twenty Five    
Class of Stock [Line Items]    
Normal course issuer bid share repurchase shares authorized 25,452,248  
Percent of total shares   5.00%
Normal Course Issuer Bid Effective From June Twenty Ninth Two Thousand And Twenty Five | Exxon Mobil    
Class of Stock [Line Items]    
Exxon Mobil Corporation's ownership interest in Imperial 69.60%