v3.25.2
Fair Value Measurements - Carrying Value and Estimated Fair Value of Financial Instruments (Detail) - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Jun. 30, 2024
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]      
Federal funds sold and securities purchased under agreements to resell [1] $ 8,125 $ 14,313  
Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss 63,585 [1] 62,216 [1] $ 60,094
Loans held for sale [1] 544 406  
Deposits 126,181 [1] 123,350 [1] $ 119,345
Long-term debt [1] 24,162 20,717  
Level 1      
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]      
Short-term financial assets, net of allowance for credit losses 792 621  
Federal funds sold and securities purchased under agreements to resell 0 0  
Securities held-to-maturity, net of allowance for credit losses 2,810 2,721  
Short-term financial liabilities 0 0  
Deposits 0 0  
Long-term debt 0 0  
Level 1 | Commercial loans      
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]      
Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss 0 0  
Loans held for sale 0 0  
Level 1 | Consumer loans      
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]      
Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss 0 0  
Level 2      
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]      
Short-term financial assets, net of allowance for credit losses 28,164 22,625  
Federal funds sold and securities purchased under agreements to resell 8,125 14,313  
Securities held-to-maturity, net of allowance for credit losses 15,309 14,308  
Short-term financial liabilities 8,005 7,352  
Deposits 121,120 119,394  
Long-term debt 16,293 13,257  
Level 2 | Commercial loans      
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]      
Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss 0 0  
Loans held for sale 124 11  
Level 2 | Consumer loans      
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]      
Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss 0 0  
Level 3      
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]      
Short-term financial assets, net of allowance for credit losses 1 19  
Federal funds sold and securities purchased under agreements to resell 0 0  
Securities held-to-maturity, net of allowance for credit losses 0 0  
Short-term financial liabilities 1 19  
Deposits 0 0  
Long-term debt 0 0  
Level 3 | Commercial loans      
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]      
Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss 42,186 41,645  
Loans held for sale 0 0  
Level 3 | Consumer loans      
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]      
Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss 20,881 19,435  
Carrying Value      
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]      
Short-term financial assets, net of allowance for credit losses 28,957 23,265  
Federal funds sold and securities purchased under agreements to resell 8,125 14,313  
Securities held-to-maturity, net of allowance for credit losses 18,547 17,798  
Short-term financial liabilities 8,006 7,371  
Deposits 121,200 119,394  
Long-term debt 15,998 12,822  
Carrying Value | Commercial loans      
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]      
Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss 41,093 40,525  
Loans held for sale 124 11  
Carrying Value | Consumer loans      
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]      
Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss 22,483 21,680  
Fair Value      
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]      
Short-term financial assets, net of allowance for credit losses 28,957 23,265  
Federal funds sold and securities purchased under agreements to resell 8,125 14,313  
Securities held-to-maturity, net of allowance for credit losses 18,119 17,029  
Short-term financial liabilities 8,006 7,371  
Deposits 121,120 119,394  
Long-term debt 16,293 13,257  
Fair Value | Commercial loans      
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]      
Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss 42,186 41,645  
Loans held for sale 124 11  
Fair Value | Consumer loans      
Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items]      
Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss $ 20,881 $ 19,435  
[1] The following table summarizes assets and liabilities related to our consolidated variable interest entities ("VIEs") at June 30, 2025 and December 31, 2024. Assets and liabilities exclude intercompany balances that eliminate in consolidation. See Note 15, "Variable Interest Entities," for additional information.
June 30, 2025December 31, 2024
(in millions)
Assets
Other assets$7 $11 
Total assets$7 $11 
Liabilities
Interest, taxes and other liabilities$15 $4 
Total liabilities$15 $4