v3.25.2
Report of the directors financial review risk report - Measurement uncertainty and sensitivity analysis of ECL estimates (Details)
6 Months Ended 12 Months Ended
Jun. 30, 2025
economic_scenario
$ / bbl
Dec. 31, 2026
Dec. 31, 2025
Dec. 31, 2024
Disclosure of credit risk exposure [line items]        
Number of economic scenarios to calculate ECL 4      
Number of economic scenarios drawn from consensus forecasts and distributional estimates 3      
2025 | West Texas Intermediate Oil        
Disclosure of credit risk exposure [line items]        
Oil and gas, average sale price (in USD per barrel) | $ / bbl 65      
Upside scenario        
Disclosure of credit risk exposure [line items]        
Probability 10.00%     10.00%
Downside scenario , worst outcome        
Disclosure of credit risk exposure [line items]        
Probability 10.00%     10.00%
Downside scenario , worst outcome | Forecast        
Disclosure of credit risk exposure [line items]        
Tariff rate   27.60% 27.60%  
Downside scenario, additional        
Disclosure of credit risk exposure [line items]        
Probability 5.00%     5.00%
Downside scenario, additional | Forecast        
Disclosure of credit risk exposure [line items]        
Tariff rate   31.60% 31.60%  
Central scenario        
Disclosure of credit risk exposure [line items]        
Probability 75.00%     75.00%
GDP growth rate, 5 year average 2.50%      
Central scenario | Forecast        
Disclosure of credit risk exposure [line items]        
Tariff rate   8.60% 13.70%  
Central scenario | 2025        
Disclosure of credit risk exposure [line items]        
GDP (annual average growth rate, %) 2.30%