v3.26.1
LOANS AND LEASES - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Accrued interest receivable on loans and leases held for investment $ 887   $ 887   $ 825
Loans pledged as collateral for FHLB borrowed funds [1] 145,522   145,522   140,749
Interest income on direct financing lease 12 $ 11 24 $ 22  
Retail | Residential mortgages | Federal Home Loan Bank Advances          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Loans pledged as collateral for FHLB borrowed funds 42,400   42,400   40,800
Consumer and Commercial Portfolio Segment | education, commercial and industrial, and commercial real estate loans, home equity lines of credit loans | Notes Payable, Other Payables          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Loans pledged as collateral for FHLB borrowed funds $ 26,200   $ 26,200   $ 19,000
[1] Includes amounts in consolidated VIEs. See Note 6 for additional information.