v3.26.1
LOANS - Types of Consumer Loan Modifications and Their Financial Effect (Details) - Consumer loans - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
In North America offices    
Financing Receivable, Impaired [Line Items]    
Modifications as % of loans 0.22% 0.19%
Total modifications balance $ 696 $ 590
In North America offices | Interest rate reduction    
Financing Receivable, Impaired [Line Items]    
Total modifications balance 525 505
In North America offices | Term extension    
Financing Receivable, Impaired [Line Items]    
Total modifications balance 11 11
In North America offices | Payment delay    
Financing Receivable, Impaired [Line Items]    
Total modifications balance 147 57
In North America offices | Combination: interest rate reduction and term extension    
Financing Receivable, Impaired [Line Items]    
Total modifications balance $ 13 $ 17
In offices outside North America    
Financing Receivable, Impaired [Line Items]    
Modifications as % of loans 0.05% 0.03%
Total modifications balance $ 37 $ 24
In offices outside North America | Interest rate reduction    
Financing Receivable, Impaired [Line Items]    
Total modifications balance 10 6
In offices outside North America | Term extension    
Financing Receivable, Impaired [Line Items]    
Total modifications balance 0 1
In offices outside North America | Payment delay    
Financing Receivable, Impaired [Line Items]    
Total modifications balance 9 11
In offices outside North America | Combination: interest rate reduction and term extension    
Financing Receivable, Impaired [Line Items]    
Total modifications balance 18 6
Residential mortgages    
Financing Receivable, Impaired [Line Items]    
Loans forgiven (less than) $ 1 1
Residential mortgages | In North America offices    
Financing Receivable, Impaired [Line Items]    
Trial modifications, period 3 months  
Trial modifications, amount $ 8 14
Loans that had gone through bankruptcy $ 3 $ 3
Modifications as % of loans 0.14% 0.06%
Total modifications balance $ 166 $ 74
Weighted-average interest rate reduction % 1.00% 1.00%
Weighted average term extension 170 months 129 months
Weighted average delay in payments 12 months 7 months
Residential mortgages | In North America offices | Interest rate reduction    
Financing Receivable, Impaired [Line Items]    
Total modifications balance $ 2 $ 1
Residential mortgages | In North America offices | Term extension    
Financing Receivable, Impaired [Line Items]    
Total modifications balance 11 11
Residential mortgages | In North America offices | Payment delay    
Financing Receivable, Impaired [Line Items]    
Total modifications balance 146 55
Residential mortgages | In North America offices | Combination: interest rate reduction and term extension    
Financing Receivable, Impaired [Line Items]    
Total modifications balance $ 7 $ 7
Residential mortgages | In offices outside North America    
Financing Receivable, Impaired [Line Items]    
Modifications as % of loans 0.04% 0.05%
Total modifications balance $ 10 $ 13
Weighted-average interest rate reduction % 2.00% 2.00%
Weighted average term extension 223 months 192 months
Weighted average delay in payments 12 months 12 months
Residential mortgages | In offices outside North America | Interest rate reduction    
Financing Receivable, Impaired [Line Items]    
Total modifications balance $ 0 $ 0
Residential mortgages | In offices outside North America | Term extension    
Financing Receivable, Impaired [Line Items]    
Total modifications balance 0 0
Residential mortgages | In offices outside North America | Payment delay    
Financing Receivable, Impaired [Line Items]    
Total modifications balance 9 11
Residential mortgages | In offices outside North America | Combination: interest rate reduction and term extension    
Financing Receivable, Impaired [Line Items]    
Total modifications balance $ 1 $ 2
Home equity loans | In North America offices    
Financing Receivable, Impaired [Line Items]    
Modifications as % of loans 0.04% 0.03%
Total modifications balance $ 1 $ 1
Weighted-average interest rate reduction % 0.00% 0.00%
Weighted average delay in payments 9 months 8 months
Home equity loans | In North America offices | Interest rate reduction    
Financing Receivable, Impaired [Line Items]    
Total modifications balance $ 0 $ 0
Home equity loans | In North America offices | Term extension    
Financing Receivable, Impaired [Line Items]    
Total modifications balance 0 0
Home equity loans | In North America offices | Payment delay    
Financing Receivable, Impaired [Line Items]    
Total modifications balance 1 1
Home equity loans | In North America offices | Combination: interest rate reduction and term extension    
Financing Receivable, Impaired [Line Items]    
Total modifications balance $ 0 0
Home equity loans | In offices outside North America    
Financing Receivable, Impaired [Line Items]    
Weighted average term extension 23 months  
Credit cards    
Financing Receivable, Impaired [Line Items]    
Loans forgiven (less than) $ 40 $ 32
Credit cards | In North America offices    
Financing Receivable, Impaired [Line Items]    
Modifications as % of loans 0.31% 0.31%
Total modifications balance $ 523 $ 505
Weighted-average interest rate reduction % 24.00% 25.00%
Weighted average delay in payments   4 months
Credit cards | In North America offices | Interest rate reduction    
Financing Receivable, Impaired [Line Items]    
Total modifications balance $ 523 $ 504
Credit cards | In North America offices | Term extension    
Financing Receivable, Impaired [Line Items]    
Total modifications balance 0 0
Credit cards | In North America offices | Payment delay    
Financing Receivable, Impaired [Line Items]    
Total modifications balance 0 1
Credit cards | In North America offices | Combination: interest rate reduction and term extension    
Financing Receivable, Impaired [Line Items]    
Total modifications balance $ 0 $ 0
Credit cards | In offices outside North America    
Financing Receivable, Impaired [Line Items]    
Modifications as % of loans 0.08% 0.04%
Total modifications balance $ 11 $ 5
Weighted-average interest rate reduction % 33.00% 24.00%
Credit cards | In offices outside North America | Interest rate reduction    
Financing Receivable, Impaired [Line Items]    
Total modifications balance $ 6 $ 5
Credit cards | In offices outside North America | Term extension    
Financing Receivable, Impaired [Line Items]    
Total modifications balance 0 0
Credit cards | In offices outside North America | Payment delay    
Financing Receivable, Impaired [Line Items]    
Total modifications balance 0 0
Credit cards | In offices outside North America | Combination: interest rate reduction and term extension    
Financing Receivable, Impaired [Line Items]    
Total modifications balance 5 0
Personal, small business and other    
Financing Receivable, Impaired [Line Items]    
Loans forgiven (less than) $ 2 $ 2
Personal, small business and other | In North America offices    
Financing Receivable, Impaired [Line Items]    
Modifications as % of loans 0.02% 0.03%
Total modifications balance $ 6 $ 10
Weighted-average interest rate reduction % 9.00% 8.00%
Weighted average term extension 17 months 19 months
Personal, small business and other | In North America offices | Interest rate reduction    
Financing Receivable, Impaired [Line Items]    
Total modifications balance $ 0 $ 0
Personal, small business and other | In North America offices | Term extension    
Financing Receivable, Impaired [Line Items]    
Total modifications balance 0 0
Personal, small business and other | In North America offices | Payment delay    
Financing Receivable, Impaired [Line Items]    
Total modifications balance 0 0
Personal, small business and other | In North America offices | Combination: interest rate reduction and term extension    
Financing Receivable, Impaired [Line Items]    
Total modifications balance $ 6 $ 10
Personal, small business and other | In offices outside North America    
Financing Receivable, Impaired [Line Items]    
Modifications as % of loans 0.04% 0.02%
Total modifications balance $ 16 $ 6
Weighted-average interest rate reduction % 6.00% 8.00%
Weighted average term extension 26 months 23 months
Personal, small business and other | In offices outside North America | Interest rate reduction    
Financing Receivable, Impaired [Line Items]    
Total modifications balance $ 4 $ 1
Personal, small business and other | In offices outside North America | Term extension    
Financing Receivable, Impaired [Line Items]    
Total modifications balance 0 1
Personal, small business and other | In offices outside North America | Payment delay    
Financing Receivable, Impaired [Line Items]    
Total modifications balance 0 0
Personal, small business and other | In offices outside North America | Combination: interest rate reduction and term extension    
Financing Receivable, Impaired [Line Items]    
Total modifications balance $ 12 $ 4