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FAIR VALUE (Schedule of Carrying Values and Estimated Fair Values of Financial Instruments) (Details) - USD ($)
$ in Millions
Sep. 30, 2025
Dec. 31, 2024
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Held-to-maturity investment securities $ 9,106 $ 9,382
Financial liabilities:    
Time deposits 10,056 11,482
Level 2 | Carrying value    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Held-to-maturity investment securities 9,059 9,669
Financial liabilities:    
Time deposits 10,056 11,482
Long-term debt 1,473 950
Level 2 | Fair value    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Held-to-maturity investment securities 9,106 9,382
Financial liabilities:    
Time deposits 9,985 11,468
Long-term debt 1,506 950
Level 3 | Carrying value    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Loans and leases (including loans held for sale), net of allowance 59,838 58,788
Level 3 | Fair value    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Loans and leases (including loans held for sale), net of allowance $ 58,075 $ 57,130