v3.26.1
LOANS - Consumer Loans Gross Credit Losses (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Financing Receivable, Credit Quality Indicator [Line Items]    
Total $ 2,820 $ 2,926
Consumer loans    
Financing Receivable, Credit Quality Indicator [Line Items]    
Total 2,778 2,727
Consumer loans | Residential mortgages    
Financing Receivable, Credit Quality Indicator [Line Items]    
Current year 0 0
Prior year 0 0
Two years prior 1 0
Three years prior 0 0
Four years prior 0 0
Prior 14 17
Total 15 17
Consumer loans | Home equity loans    
Financing Receivable, Credit Quality Indicator [Line Items]    
Total 0 2
Consumer loans | Home equity line of credit (pre-reset)    
Financing Receivable, Credit Quality Indicator [Line Items]    
Total 0 2
Consumer loans | Home equity line of credit (post-reset)    
Financing Receivable, Credit Quality Indicator [Line Items]    
Total 0 0
Consumer loans | Home equity term loans    
Financing Receivable, Credit Quality Indicator [Line Items]    
Revolving loans converted to term loans 0 0
Consumer loans | Credit cards    
Financing Receivable, Credit Quality Indicator [Line Items]    
Total 2,430 2,420
Consumer loans | Revolving loans converted to term loans    
Financing Receivable, Credit Quality Indicator [Line Items]    
Revolving loans converted to term loans 53 84
Consumer loans | Total credit cards    
Financing Receivable, Credit Quality Indicator [Line Items]    
Total 2,483 2,504
Consumer loans | Personal, small business and other    
Financing Receivable, Credit Quality Indicator [Line Items]    
Current year 52 32
Prior year 63 49
Two years prior 65 46
Three years prior 32 27
Four years prior 17 10
Prior 51 40
Total $ 280 $ 204