v3.25.2
Provisions - Rollforward of provisions (Details)
$ in Millions
 6 Months Ended
Jun. 30, 2025
USD ($)
Reconciliation of changes in other provisions [abstract]  
Other provisions, beginning balance $ 1,724
Other provisions, ending balance 2,125
Total  
Reconciliation of changes in other provisions [abstract]  
Other provisions, beginning balance 1,036
Additions 801
Amounts utilised (325)
Unused amounts reversed (126)
Exchange and other movements 67
Other provisions, ending balance 1,453
Restructuring costs  
Reconciliation of changes in other provisions [abstract]  
Other provisions, beginning balance 199
Additions 647
Amounts utilised (167)
Unused amounts reversed (50)
Exchange and other movements 27
Other provisions, ending balance 656
Legal proceedings and regulatory matters  
Reconciliation of changes in other provisions [abstract]  
Other provisions, beginning balance 295
Additions 79
Amounts utilised (100)
Unused amounts reversed (29)
Exchange and other movements 24
Other provisions, ending balance 269
Customer remediation  
Reconciliation of changes in other provisions [abstract]  
Other provisions, beginning balance 85
Additions 6
Amounts utilised (12)
Unused amounts reversed (26)
Exchange and other movements 5
Other provisions, ending balance 58
Other provisions  
Reconciliation of changes in other provisions [abstract]  
Other provisions, beginning balance 457
Additions 69
Amounts utilised (46)
Unused amounts reversed (21)
Exchange and other movements 11
Other provisions, ending balance 470
Contractual commitments  
Reconciliation of changes in other provisions [abstract]  
Other provisions, beginning balance 688
Net change in expected credit loss provision and other movements (16)
Other provisions, ending balance $ 672