v3.26.1
Loans and asset quality - Information about Past Due Loans (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Financing Receivable, Past Due [Line Items]    
Loans $ 88,741 $ 80,615
Total past due    
Financing Receivable, Past Due [Line Items]    
Loans 80 159
Total past due | Wealth management loans    
Financing Receivable, Past Due [Line Items]    
Loans 54 71
Total past due | Other residential mortgages    
Financing Receivable, Past Due [Line Items]    
Loans 18 27
Total past due | Wealth management mortgages    
Financing Receivable, Past Due [Line Items]    
Loans 5 51
Total past due | Commercial real estate    
Financing Receivable, Past Due [Line Items]    
Loans 3 10
30 to 59 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Loans 72 142
30 to 59 Days Past Due | Wealth management loans    
Financing Receivable, Past Due [Line Items]    
Loans 53 63
30 to 59 Days Past Due | Other residential mortgages    
Financing Receivable, Past Due [Line Items]    
Loans 16 23
30 to 59 Days Past Due | Wealth management mortgages    
Financing Receivable, Past Due [Line Items]    
Loans 0 49
30 to 59 Days Past Due | Commercial real estate    
Financing Receivable, Past Due [Line Items]    
Loans 3 7
60 to 89 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Loans 8 17
60 to 89 Days Past Due | Wealth management loans    
Financing Receivable, Past Due [Line Items]    
Loans 1 8
60 to 89 Days Past Due | Other residential mortgages    
Financing Receivable, Past Due [Line Items]    
Loans 2 4
60 to 89 Days Past Due | Wealth management mortgages    
Financing Receivable, Past Due [Line Items]    
Loans 5 2
60 to 89 Days Past Due | Commercial real estate    
Financing Receivable, Past Due [Line Items]    
Loans 0 3
Equal to Greater than 90 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Loans 0 0
Equal to Greater than 90 Days Past Due | Wealth management loans    
Financing Receivable, Past Due [Line Items]    
Loans 0 0
Equal to Greater than 90 Days Past Due | Other residential mortgages    
Financing Receivable, Past Due [Line Items]    
Loans 0 0
Equal to Greater than 90 Days Past Due | Wealth management mortgages    
Financing Receivable, Past Due [Line Items]    
Loans 0 0
Equal to Greater than 90 Days Past Due | Commercial real estate    
Financing Receivable, Past Due [Line Items]    
Loans $ 0 $ 0