v3.25.1
Guarantee Arrangements, Pledged Assets and Repurchase Agreements - Narrative (Detail) - USD ($)
 36 Months Ended
Dec. 31, 2007
Mar. 31, 2025
Dec. 31, 2024
Guarantor Obligations [Line Items]      
Deferred fees   $ 7,000,000 $ 3,000,000
Carrying value of swap   1,305,154,000,000 1,307,707,000,000
Estimate of reasonably possible loss   125,000,000  
Fair Value [1]   26,021,000,000 24,937,000,000
Trading assets [1]   18,670,000,000 21,231,000,000
Collateral accepted under security resale agreements, fair value   14,392,000,000 17,595,000,000
Collateral accepted under security repurchase agreements but not reported on the balance sheet that can be sold or repledged, fair value   13,742,000,000 16,945,000,000
Collateral accepted under security repurchase agreements that has been sold or repledged under repurchase agreements or to cover short sales   201,000,000 235,000,000
Asset Pledged as Collateral with Right      
Guarantor Obligations [Line Items]      
Fair Value   1,352,000,000 616,000,000
Trading assets   3,790,000,000 3,621,000,000
Obligation to Repurchase Receivables Sold      
Guarantor Obligations [Line Items]      
Estimated repurchase liability   3,000,000 3,000,000
Obligation to Repurchase Receivables Sold | Minimum      
Guarantor Obligations [Line Items]      
Estimate of reasonably possible loss   0  
Obligation to Repurchase Receivables Sold | Maximum      
Guarantor Obligations [Line Items]      
Estimate of reasonably possible loss   25,000,000  
HSBC Securities      
Guarantor Obligations [Line Items]      
Whole loan securitization $ 24,000,000,000    
HSBC Securities | Mortgage Securitization Activity Related Litigation      
Guarantor Obligations [Line Items]      
Mortgage securitization outstanding loan purchase and sold   2,300,000,000 2,300,000,000
Other liabilities      
Guarantor Obligations [Line Items]      
Allowance for credit losses on unfunded standby letters of credit   11,000,000 12,000,000
Other liabilities | Standby Letters of Credit      
Guarantor Obligations [Line Items]      
Deferred fees   55,000,000 53,000,000
Swap      
Guarantor Obligations [Line Items]      
Carrying value of swap   $ 32,000,000 $ 31,000,000
[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