v3.26.3
FAIR VALUE (Schedule of Carrying Values and Estimated Fair Values of Financial Instruments) (Details) - USD ($)
$ in Millions
Sep. 30, 2026
Dec. 31, 2025
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Held-to-maturity investment securities $ 7,856 $ 8,940
Financial liabilities:    
Time deposits 9,258 9,907
Level 2 | Carrying value | Fair Value, Nonrecurring    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Held-to-maturity investment securities 8,268 8,867
Financial liabilities:    
Time deposits 9,258 9,907
Long-term debt 2,416 1,472
Level 2 | Fair value | Fair Value, Nonrecurring    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Held-to-maturity investment securities 7,856 8,940
Financial liabilities:    
Time deposits 9,147 9,839
Long-term debt 2,440 1,506
Level 3 | Carrying value | Fair Value, Nonrecurring    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Loans and leases (including loans held for sale), net of allowance 61,876 60,423
Level 3 | Fair value | Fair Value, Nonrecurring    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Loans and leases (including loans held for sale), net of allowance $ 61,429 $ 59,383