v3.26.1
Adjusting items - Profit from operations (Details)
£ in Millions, $ in Millions
 6 Months Ended 30 Months Ended
Jun. 30, 2026
GBP (£)
Jun. 30, 2026
USD ($)
Jun. 30, 2025
GBP (£)
Dec. 31, 2027
GBP (£)
Disclosure of attribution of expenses by nature to their function [line items]        
Restructuring £ 370   £ 13  
Impairment of goodwill 0   72  
Other adjusting items (including Engle) 171   30  
Credit in respect of the Canada Approved Plans (38)   (575)  
Profit from operations 4,266   5,069  
ITG Brands        
Disclosure of attribution of expenses by nature to their function [line items]        
Credit in respect of settlement of historical litigations with ITG brands (149) $ (200) 0  
Adj items        
Disclosure of attribution of expenses by nature to their function [line items]        
Restructuring       £ 459
Profit from operations 1,160   325  
Romania        
Disclosure of attribution of expenses by nature to their function [line items]        
Credit in respect of Romania's other taxes (2)   (22)  
Total for all subsidiaries        
Disclosure of attribution of expenses by nature to their function [line items]        
Charges in connection with disposal of associate 12   0  
Total for all associates        
Disclosure of attribution of expenses by nature to their function [line items]        
Charges in connection with disposal of associate 0   3  
Trademarks and similar intangibles        
Disclosure of attribution of expenses by nature to their function [line items]        
Amortisation and impairment of trademarks and similar intangibles £ 796   £ 804