v3.26.1
LOANS - Types of Consumer Loan Modifications and Their Financial Effect (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, Impaired [Line Items]        
Modifications as % of loans 0.17% 0.23% 0.35% 0.39%
Total modifications balance $ 581 $ 741 $ 1,154 $ 1,244
In North America offices | Interest rate reduction        
Financing Receivable, Impaired [Line Items]        
Total modifications balance 453 435 899 858
In North America offices | Term extension        
Financing Receivable, Impaired [Line Items]        
Total modifications balance 11 18 22 29
In North America offices | Payment delay        
Financing Receivable, Impaired [Line Items]        
Total modifications balance 98 272 202 326
In North America offices | Combination: interest rate reduction and term extension        
Financing Receivable, Impaired [Line Items]        
Total modifications balance $ 19 $ 16 $ 31 $ 31
In offices outside North America        
Financing Receivable, Impaired [Line Items]        
Modifications as % of loans 0.06% 0.04% 0.12% 0.07%
Total modifications balance $ 49 $ 28 $ 99 $ 52
In offices outside North America | Interest rate reduction        
Financing Receivable, Impaired [Line Items]        
Total modifications balance 13 9 24 16
In offices outside North America | Term extension        
Financing Receivable, Impaired [Line Items]        
Total modifications balance 0 0 0 0
In offices outside North America | Payment delay        
Financing Receivable, Impaired [Line Items]        
Total modifications balance 8 11 24 22
In offices outside North America | Combination: interest rate reduction and term extension        
Financing Receivable, Impaired [Line Items]        
Total modifications balance 28 8 51 14
Residential mortgages        
Financing Receivable, Impaired [Line Items]        
Loans forgiven (less than) 1 1 $ 2 1
Residential mortgages | In North America offices        
Financing Receivable, Impaired [Line Items]        
Trial modifications, period     3 months  
Trial modifications, amount 4 20 $ 7 28
Loans that had gone through bankruptcy $ 1 $ 2 $ 3 $ 5
Modifications as % of loans 0.10% 0.25% 0.20% 0.31%
Total modifications balance $ 120 $ 294 $ 242 $ 364
Weighted-average interest rate reduction % 1.00% 0.00% 1.00% 1.00%
Weighted average term extension 158 months 155 months 163 months 144 months
Weighted average delay in payments 11 months 6 months 12 months 6 months
Residential mortgages | In North America offices | Interest rate reduction        
Financing Receivable, Impaired [Line Items]        
Total modifications balance $ 1 $ 0 $ 3 $ 1
Residential mortgages | In North America offices | Term extension        
Financing Receivable, Impaired [Line Items]        
Total modifications balance 11 18 22 29
Residential mortgages | In North America offices | Payment delay        
Financing Receivable, Impaired [Line Items]        
Total modifications balance 97 270 200 321
Residential mortgages | In North America offices | Combination: interest rate reduction and term extension        
Financing Receivable, Impaired [Line Items]        
Total modifications balance $ 11 $ 6 $ 17 $ 13
Residential mortgages | In offices outside North America        
Financing Receivable, Impaired [Line Items]        
Modifications as % of loans 0.04% 0.05% 0.13% 0.10%
Total modifications balance $ 10 $ 11 $ 30 $ 24
Weighted-average interest rate reduction % 0.00% 0.00% 2.00% 2.00%
Weighted average term extension 213 months   197 months 191 months
Weighted average delay in payments 12 months 12 months 12 months 12 months
Residential mortgages | In offices outside North America | Interest rate reduction        
Financing Receivable, Impaired [Line Items]        
Total modifications balance $ 0 $ 0 $ 0 $ 0
Residential mortgages | In offices outside North America | Term extension        
Financing Receivable, Impaired [Line Items]        
Total modifications balance 0 0 0 0
Residential mortgages | In offices outside North America | Payment delay        
Financing Receivable, Impaired [Line Items]        
Total modifications balance 8 11 24 22
Residential mortgages | In offices outside North America | Combination: interest rate reduction and term extension        
Financing Receivable, Impaired [Line Items]        
Total modifications balance $ 2 $ 0 $ 6 $ 2
Home equity loans | In North America offices        
Financing Receivable, Impaired [Line Items]        
Modifications as % of loans 0.04% 0.07% 0.09% 0.13%
Total modifications balance $ 1 $ 2 $ 2 $ 4
Weighted-average interest rate reduction % 0.00% 0.00% 0.00% 0.00%
Weighted average delay in payments 11 months 6 months 11 months 8 months
Home equity loans | In North America offices | Interest rate reduction        
Financing Receivable, Impaired [Line Items]        
Total modifications balance $ 0 $ 0 $ 0 $ 0
Home equity loans | In North America offices | Term extension        
Financing Receivable, Impaired [Line Items]        
Total modifications balance 0 0 0 0
Home equity loans | In North America offices | Payment delay        
Financing Receivable, Impaired [Line Items]        
Total modifications balance 1 2 2 4
Home equity loans | In North America offices | Combination: interest rate reduction and term extension        
Financing Receivable, Impaired [Line Items]        
Total modifications balance $ 0 0 0 0
Home equity loans | In offices outside North America        
Financing Receivable, Impaired [Line Items]        
Weighted average term extension 24 months      
Credit cards        
Financing Receivable, Impaired [Line Items]        
Loans forgiven (less than) $ 43 $ 34 $ 82 $ 62
Credit cards | In North America offices        
Financing Receivable, Impaired [Line Items]        
Modifications as % of loans 0.25% 0.26% 0.50% 0.51%
Total modifications balance $ 452 $ 435 $ 896 $ 857
Weighted-average interest rate reduction % 24.00% 25.00% 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 $ 452 $ 435 $ 896 $ 856
Credit cards | In North America offices | Term extension        
Financing Receivable, Impaired [Line Items]        
Total modifications balance 0 0 0 0
Credit cards | In North America offices | Payment delay        
Financing Receivable, Impaired [Line Items]        
Total modifications balance 0 0 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 $ 0 $ 0
Credit cards | In offices outside North America        
Financing Receivable, Impaired [Line Items]        
Modifications as % of loans 0.09% 0.06% 0.18% 0.10%
Total modifications balance $ 13 $ 8 $ 26 $ 13
Weighted-average interest rate reduction % 33.00% 23.00% 35.00% 24.00%
Weighted average term extension     23 months  
Credit cards | In offices outside North America | Interest rate reduction        
Financing Receivable, Impaired [Line Items]        
Total modifications balance $ 7 $ 8 $ 13 $ 13
Credit cards | In offices outside North America | Term extension        
Financing Receivable, Impaired [Line Items]        
Total modifications balance 0 0 0 0
Credit cards | In offices outside North America | Payment delay        
Financing Receivable, Impaired [Line Items]        
Total modifications balance 0 0 0 0
Credit cards | In offices outside North America | Combination: interest rate reduction and term extension        
Financing Receivable, Impaired [Line Items]        
Total modifications balance 6 0 13 0
Personal, small business and other        
Financing Receivable, Impaired [Line Items]        
Loans forgiven (less than) $ 2 $ 2 $ 3 $ 2
Personal, small business and other | In North America offices        
Financing Receivable, Impaired [Line Items]        
Modifications as % of loans 0.02% 0.03% 0.04% 0.06%
Total modifications balance $ 8 $ 10 $ 14 $ 19
Weighted-average interest rate reduction % 9.00% 8.00% 9.00% 8.00%
Weighted average term extension 16 months 18 months 17 months 18 months
Personal, small business and other | In North America offices | Interest rate reduction        
Financing Receivable, Impaired [Line Items]        
Total modifications balance $ 0 $ 0 $ 0 $ 1
Personal, small business and other | In North America offices | Term extension        
Financing Receivable, Impaired [Line Items]        
Total modifications balance 0 0 0 0
Personal, small business and other | In North America offices | Payment delay        
Financing Receivable, Impaired [Line Items]        
Total modifications balance 0 0 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 $ 8 $ 10 $ 14 $ 18
Personal, small business and other | In offices outside North America        
Financing Receivable, Impaired [Line Items]        
Modifications as % of loans 0.06% 0.02% 0.10% 0.04%
Total modifications balance $ 26 $ 9 $ 43 $ 15
Weighted-average interest rate reduction % 6.00% 6.00% 7.00% 6.00%
Weighted average term extension 27 months 27 months 27 months 28 months
Personal, small business and other | In offices outside North America | Interest rate reduction        
Financing Receivable, Impaired [Line Items]        
Total modifications balance $ 6 $ 1 $ 11 $ 3
Personal, small business and other | In offices outside North America | Term extension        
Financing Receivable, Impaired [Line Items]        
Total modifications balance 0 0 0 0
Personal, small business and other | In offices outside North America | Payment delay        
Financing Receivable, Impaired [Line Items]        
Total modifications balance 0 0 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 $ 20 $ 8 $ 32 $ 12