v3.25.2
Franked Investment Income Group Litigation order - additional information (Details) - FII GLO
£ in Millions
6 Months Ended 12 Months Ended 48 Months Ended
Jun. 30, 2025
GBP (£)
CorporateGroup
Jun. 30, 2024
GBP (£)
Dec. 31, 2027
GBP (£)
Dec. 31, 2026
GBP (£)
Dec. 31, 2025
GBP (£)
Dec. 31, 2024
GBP (£)
Dec. 31, 2023
GBP (£)
Dec. 31, 2022
GBP (£)
Dec. 31, 2020
trial
Dec. 31, 2015
GBP (£)
payment
Dec. 31, 2027
GBP (£)
Gains Losses On Litigation Settlements [Line Items]                      
Number of corporate groups in FII GLO | CorporateGroup 15                    
Number of trials | trial                 2    
Litigation settlement amount, applying prudential judgement £ 300                    
Litigation settlement amount received                   £ 1,200  
Number of payments | payment                   2  
Tax amount on litigation settlement deduction amount                   £ 300  
Litigation settlement amount received after tax 900                    
Interest related to FII GLO 19 £ 31                  
Settlement payments £ 368         £ 50 £ 50 £ 50      
Forecast                      
Gains Losses On Litigation Settlements [Line Items]                      
Settlement payments     £ 43 £ 222 £ 479           £ 800