v3.25.4
Derivatives - Cash flow hedges - Reconciliation of equity and analysis of other comprehensive income by risk type (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Changes in reserve of cash flow hedges, continuing hedges [Roll Forward]      
– fair value gains/(losses) $ 749 $ (282) $ 2,534
Fair value (gains)/losses reclassified from the cash flow hedge reserve to the income statement in respect of:      
Income taxes (587) 103 (1,044)
Interest rate | Cash flow hedges      
Changes in reserve of cash flow hedges, continuing hedges [Roll Forward]      
Cash flow hedging reserve, beginning balance (1,056) (901)  
– fair value gains/(losses) 1,267 (2,964)  
Cash flow hedging reserve, ending balance 428 (1,056) (901)
Fair value (gains)/losses reclassified from the cash flow hedge reserve to the income statement in respect of:      
Hedged items that have affected profit or loss 807 2,529  
Income taxes (541) 81  
Others (49) 199  
Foreign currency | Cash flow hedges      
Changes in reserve of cash flow hedges, continuing hedges [Roll Forward]      
Cash flow hedging reserve, beginning balance (23) (132)  
– fair value gains/(losses) (376) 2,451  
Cash flow hedging reserve, ending balance 142 (23) $ (132)
Fair value (gains)/losses reclassified from the cash flow hedge reserve to the income statement in respect of:      
Hedged items that have affected profit or loss 574 (2,430)  
Income taxes (31) 1  
Others $ (2) $ 87