v3.25.2
Loans - Summary of Subsequently Delinquent Loans With Payment Modifications (Details) - 90+ Days - USD ($)
$ in Millions
6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Commercial loans    
Financing Receivable, Modified [Line Items]    
Loans modified, subsequently default   $ 1
Commercial loans | Interest Rate Reduction    
Financing Receivable, Modified [Line Items]    
Loans modified, subsequently default   0
Commercial loans | Principal Forgiveness    
Financing Receivable, Modified [Line Items]    
Loans modified, subsequently default   0
Commercial loans | Term Extension / Significant Payment Deferral    
Financing Receivable, Modified [Line Items]    
Loans modified, subsequently default   1
Commercial loans | Combination    
Financing Receivable, Modified [Line Items]    
Loans modified, subsequently default   0
Commercial loans | Business and corporate banking    
Financing Receivable, Modified [Line Items]    
Loans modified, subsequently default   1
Commercial loans | Business and corporate banking | Interest Rate Reduction    
Financing Receivable, Modified [Line Items]    
Loans modified, subsequently default   0
Commercial loans | Business and corporate banking | Principal Forgiveness    
Financing Receivable, Modified [Line Items]    
Loans modified, subsequently default   0
Commercial loans | Business and corporate banking | Term Extension / Significant Payment Deferral    
Financing Receivable, Modified [Line Items]    
Loans modified, subsequently default   1
Commercial loans | Business and corporate banking | Combination    
Financing Receivable, Modified [Line Items]    
Loans modified, subsequently default   $ 0
Consumer loans    
Financing Receivable, Modified [Line Items]    
Loans modified, subsequently default $ 1  
Consumer loans | Interest Rate Reduction    
Financing Receivable, Modified [Line Items]    
Loans modified, subsequently default 0  
Consumer loans | Principal Forgiveness    
Financing Receivable, Modified [Line Items]    
Loans modified, subsequently default 0  
Consumer loans | Term Extension / Significant Payment Deferral    
Financing Receivable, Modified [Line Items]    
Loans modified, subsequently default 1  
Consumer loans | Combination    
Financing Receivable, Modified [Line Items]    
Loans modified, subsequently default 0  
Consumer loans | Residential mortgages    
Financing Receivable, Modified [Line Items]    
Loans modified, subsequently default 1  
Consumer loans | Residential mortgages | Interest Rate Reduction    
Financing Receivable, Modified [Line Items]    
Loans modified, subsequently default 0  
Consumer loans | Residential mortgages | Principal Forgiveness    
Financing Receivable, Modified [Line Items]    
Loans modified, subsequently default 0  
Consumer loans | Residential mortgages | Term Extension / Significant Payment Deferral    
Financing Receivable, Modified [Line Items]    
Loans modified, subsequently default 1  
Consumer loans | Residential mortgages | Combination    
Financing Receivable, Modified [Line Items]    
Loans modified, subsequently default $ 0