v3.25.1
Fair Value Measurements - Carrying Value and Estimated Fair Value of Financial Instruments (Detail) - USD ($)
$ in Millions
Mar. 31, 2025
Dec. 31, 2024
Mar. 31, 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] $ 10,379 $ 14,313  
Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss 62,780 [1] 62,216 [1] $ 59,216
Loans held for sale [1] 594 406  
Deposits 125,724 [1] 123,350 [1] $ 122,053
Long-term debt [1] 20,668 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 888 621  
Federal funds sold and securities purchased under agreements to resell 0 0  
Securities held-to-maturity, net of allowance for credit losses 2,781 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 28,414 22,625  
Federal funds sold and securities purchased under agreements to resell 10,379 14,313  
Securities held-to-maturity, net of allowance for credit losses 14,855 14,308  
Short-term financial liabilities 7,564 7,352  
Deposits 120,806 119,394  
Long-term debt 13,523 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 73 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 35 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 35 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 41,577 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 20,399 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 29,337 23,265  
Federal funds sold and securities purchased under agreements to resell 10,379 14,313  
Securities held-to-maturity, net of allowance for credit losses 18,139 17,798  
Short-term financial liabilities 7,599 7,371  
Deposits 120,862 119,394  
Long-term debt 13,154 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 40,719 40,525  
Loans held for sale 73 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 22,051 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 29,337 23,265  
Federal funds sold and securities purchased under agreements to resell 10,379 14,313  
Securities held-to-maturity, net of allowance for credit losses 17,636 17,029  
Short-term financial liabilities 7,599 7,371  
Deposits 120,806 119,394  
Long-term debt 13,523 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 41,577 41,645  
Loans held for sale 73 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 $ 20,399 $ 19,435  
[1] The following table summarizes assets and liabilities related to our consolidated variable interest entities ("VIEs") at March 31, 2025 and December 31, 2024. Assets and liabilities exclude intercompany balances that eliminate in consolidation. See Note 15, "Variable Interest Entities," for additional information.
March 31, 2025December 31, 2024
(in millions)
Assets
Other assets$9 $11 
Total assets$9 $11 
Liabilities
Interest, taxes and other liabilities$16 $4 
Total liabilities$16 $4