v3.26.1
LOANS - Defaults of Modified Consumer Loans (Details) - Consumer loans - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
In North America offices        
Financing Receivable, Modified [Line Items]        
Total loans defaulted within one year of modification $ 92 $ 95 $ 134 $ 145
In North America offices | Interest rate reduction        
Financing Receivable, Modified [Line Items]        
Total loans defaulted within one year of modification 87 83 115 127
In North America offices | Term extension        
Financing Receivable, Modified [Line Items]        
Total loans defaulted within one year of modification 2 7 10 11
In North America offices | Payment delay        
Financing Receivable, Modified [Line Items]        
Total loans defaulted within one year of modification 0 0 0 0
In North America offices | Combination: interest rate reduction and term extension        
Financing Receivable, Modified [Line Items]        
Total loans defaulted within one year of modification 3 5 9 7
In North America offices | Combination: term extension and payment delay        
Financing Receivable, Modified [Line Items]        
Total loans defaulted within one year of modification 0 0 0 0
In North America offices | Combination: interest rate reduction, term extension and payment delay        
Financing Receivable, Modified [Line Items]        
Total loans defaulted within one year of modification 0 0 0 0
In offices outside North America        
Financing Receivable, Modified [Line Items]        
Total loans defaulted within one year of modification 4 4 12 6
In offices outside North America | Interest rate reduction        
Financing Receivable, Modified [Line Items]        
Total loans defaulted within one year of modification 1 1 3 1
In offices outside North America | Term extension        
Financing Receivable, Modified [Line Items]        
Total loans defaulted within one year of modification 0 0 0 0
In offices outside North America | Payment delay        
Financing Receivable, Modified [Line Items]        
Total loans defaulted within one year of modification 1 1 2 2
In offices outside North America | Combination: interest rate reduction and term extension        
Financing Receivable, Modified [Line Items]        
Total loans defaulted within one year of modification 2 2 7 3
In offices outside North America | Combination: term extension and payment delay        
Financing Receivable, Modified [Line Items]        
Total loans defaulted within one year of modification 0 0 0 0
In offices outside North America | Combination: interest rate reduction, term extension and payment delay        
Financing Receivable, Modified [Line Items]        
Total loans defaulted within one year of modification 0 0 0 0
Residential mortgages | In North America offices        
Financing Receivable, Modified [Line Items]        
Total loans defaulted within one year of modification 4 11 18 17
Residential mortgages | In North America offices | Interest rate reduction        
Financing Receivable, Modified [Line Items]        
Total loans defaulted within one year of modification 0 0 0 0
Residential mortgages | In North America offices | Term extension        
Financing Receivable, Modified [Line Items]        
Total loans defaulted within one year of modification 2 7 10 11
Residential mortgages | In North America offices | Payment delay        
Financing Receivable, Modified [Line Items]        
Total loans defaulted within one year of modification 0 0 0 0
Residential mortgages | In North America offices | Combination: interest rate reduction and term extension        
Financing Receivable, Modified [Line Items]        
Total loans defaulted within one year of modification 2 4 8 6
Residential mortgages | In North America offices | Combination: term extension and payment delay        
Financing Receivable, Modified [Line Items]        
Total loans defaulted within one year of modification 0 0 0 0
Residential mortgages | In North America offices | Combination: interest rate reduction, term extension and payment delay        
Financing Receivable, Modified [Line Items]        
Total loans defaulted within one year of modification 0 0 0 0
Residential mortgages | In offices outside North America        
Financing Receivable, Modified [Line Items]        
Total loans defaulted within one year of modification 1 1 3 2
Residential mortgages | In offices outside North America | Interest rate reduction        
Financing Receivable, Modified [Line Items]        
Total loans defaulted within one year of modification 0 0 0 0
Residential mortgages | In offices outside North America | Term extension        
Financing Receivable, Modified [Line Items]        
Total loans defaulted within one year of modification 0 0 0 0
Residential mortgages | In offices outside North America | Payment delay        
Financing Receivable, Modified [Line Items]        
Total loans defaulted within one year of modification 1 1 2 2
Residential mortgages | In offices outside North America | Combination: interest rate reduction and term extension        
Financing Receivable, Modified [Line Items]        
Total loans defaulted within one year of modification 0 0 1 0
Residential mortgages | In offices outside North America | Combination: term extension and payment delay        
Financing Receivable, Modified [Line Items]        
Total loans defaulted within one year of modification 0 0 0 0
Residential mortgages | In offices outside North America | Combination: interest rate reduction, term extension and payment delay        
Financing Receivable, Modified [Line Items]        
Total loans defaulted within one year of modification 0 0 0 0
Home equity loans | In North America offices        
Financing Receivable, Modified [Line Items]        
Total loans defaulted within one year of modification 0 0 0 0
Home equity loans | In North America offices | Interest rate reduction        
Financing Receivable, Modified [Line Items]        
Total loans defaulted within one year of modification 0 0 0 0
Home equity loans | In North America offices | Term extension        
Financing Receivable, Modified [Line Items]        
Total loans defaulted within one year of modification 0 0 0 0
Home equity loans | In North America offices | Payment delay        
Financing Receivable, Modified [Line Items]        
Total loans defaulted within one year of modification 0 0 0 0
Home equity loans | In North America offices | Combination: interest rate reduction and term extension        
Financing Receivable, Modified [Line Items]        
Total loans defaulted within one year of modification 0 0 0 0
Home equity loans | In North America offices | Combination: term extension and payment delay        
Financing Receivable, Modified [Line Items]        
Total loans defaulted within one year of modification 0 0 0 0
Home equity loans | In North America offices | Combination: interest rate reduction, term extension and payment delay        
Financing Receivable, Modified [Line Items]        
Total loans defaulted within one year of modification 0 0 0 0
Total credit cards | In North America offices        
Financing Receivable, Modified [Line Items]        
Total loans defaulted within one year of modification 87 83 115 127
Total credit cards | In North America offices | Interest rate reduction        
Financing Receivable, Modified [Line Items]        
Total loans defaulted within one year of modification 87 83 115 127
Total credit cards | In North America offices | Term extension        
Financing Receivable, Modified [Line Items]        
Total loans defaulted within one year of modification 0 0 0 0
Total credit cards | In North America offices | Payment delay        
Financing Receivable, Modified [Line Items]        
Total loans defaulted within one year of modification 0 0 0 0
Total credit cards | In North America offices | Combination: interest rate reduction and term extension        
Financing Receivable, Modified [Line Items]        
Total loans defaulted within one year of modification 0 0 0 0
Total credit cards | In North America offices | Combination: term extension and payment delay        
Financing Receivable, Modified [Line Items]        
Total loans defaulted within one year of modification 0 0 0 0
Total credit cards | In North America offices | Combination: interest rate reduction, term extension and payment delay        
Financing Receivable, Modified [Line Items]        
Total loans defaulted within one year of modification 0 0 0 0
Total credit cards | In offices outside North America        
Financing Receivable, Modified [Line Items]        
Total loans defaulted within one year of modification 1 1 4 1
Total credit cards | In offices outside North America | Interest rate reduction        
Financing Receivable, Modified [Line Items]        
Total loans defaulted within one year of modification 1 1 2 1
Total credit cards | In offices outside North America | Term extension        
Financing Receivable, Modified [Line Items]        
Total loans defaulted within one year of modification 0 0 0 0
Total credit cards | In offices outside North America | Payment delay        
Financing Receivable, Modified [Line Items]        
Total loans defaulted within one year of modification 0 0 0 0
Total credit cards | In offices outside North America | Combination: interest rate reduction and term extension        
Financing Receivable, Modified [Line Items]        
Total loans defaulted within one year of modification 0 0 2 0
Total credit cards | In offices outside North America | Combination: term extension and payment delay        
Financing Receivable, Modified [Line Items]        
Total loans defaulted within one year of modification 0 0 0 0
Total credit cards | In offices outside North America | Combination: interest rate reduction, term extension and payment delay        
Financing Receivable, Modified [Line Items]        
Total loans defaulted within one year of modification 0 0 0 0
Personal, small business and other | In North America offices        
Financing Receivable, Modified [Line Items]        
Total loans defaulted within one year of modification 1 1 1 1
Personal, small business and other | In North America offices | Interest rate reduction        
Financing Receivable, Modified [Line Items]        
Total loans defaulted within one year of modification 0 0 0 0
Personal, small business and other | In North America offices | Term extension        
Financing Receivable, Modified [Line Items]        
Total loans defaulted within one year of modification 0 0 0 0
Personal, small business and other | In North America offices | Payment delay        
Financing Receivable, Modified [Line Items]        
Total loans defaulted within one year of modification 0 0 0 0
Personal, small business and other | In North America offices | Combination: interest rate reduction and term extension        
Financing Receivable, Modified [Line Items]        
Total loans defaulted within one year of modification 1 1 1 1
Personal, small business and other | In North America offices | Combination: term extension and payment delay        
Financing Receivable, Modified [Line Items]        
Total loans defaulted within one year of modification 0 0 0 0
Personal, small business and other | In North America offices | Combination: interest rate reduction, term extension and payment delay        
Financing Receivable, Modified [Line Items]        
Total loans defaulted within one year of modification 0 0 0 0
Personal, small business and other | In offices outside North America        
Financing Receivable, Modified [Line Items]        
Total loans defaulted within one year of modification 2 2 5 3
Personal, small business and other | In offices outside North America | Interest rate reduction        
Financing Receivable, Modified [Line Items]        
Total loans defaulted within one year of modification 0 0 1 0
Personal, small business and other | In offices outside North America | Term extension        
Financing Receivable, Modified [Line Items]        
Total loans defaulted within one year of modification 0 0 0 0
Personal, small business and other | In offices outside North America | Payment delay        
Financing Receivable, Modified [Line Items]        
Total loans defaulted within one year of modification 0 0 0 0
Personal, small business and other | In offices outside North America | Combination: interest rate reduction and term extension        
Financing Receivable, Modified [Line Items]        
Total loans defaulted within one year of modification 2 2 4 3
Personal, small business and other | In offices outside North America | Combination: term extension and payment delay        
Financing Receivable, Modified [Line Items]        
Total loans defaulted within one year of modification 0 0 0 0
Personal, small business and other | In offices outside North America | Combination: interest rate reduction, term extension and payment delay        
Financing Receivable, Modified [Line Items]        
Total loans defaulted within one year of modification $ 0 $ 0 $ 0 $ 0