v3.26.1
LOANS AND LEASES - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Accrued interest receivable on loans and leases held for investment $ 832   $ 825
Loans pledged as collateral for FHLB borrowed funds [1] 141,709   140,749
Interest income on direct financing lease 12 $ 11  
Retail | Residential mortgages | Federal Home Loan Bank Advances      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Loans pledged as collateral for FHLB borrowed funds 42,500   40,800
Consumer and Commercial Portfolio Segment | Education, commercial and industrial, and commercial real estate loans | Notes Payable, Other Payables      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Loans pledged as collateral for FHLB borrowed funds $ 24,000   $ 19,000
[1] Includes amounts in consolidated VIEs. See Note 6 for additional information.