v3.26.1
Securitizations and Variable Interest Entities, Transfers with Continuing Involvement (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Excluding resecuritization [Member]      
Securitizations and Variable Interest Entities Textual [Abstract]      
Cash flows from other interests held $ 35 $ 6  
Excluding resecuritization [Member] | Fair value, inputs, level 2 [Member]      
Securitizations and Variable Interest Entities Textual [Abstract]      
Securities recognized, trading 416 531  
Excluding resecuritization [Member] | Total Consumer [Member] | Residential mortgage [Member]      
Quantitative Information, Transferor's Continuing Involvement [Line Items]      
Assets sold 1,334 1,882  
Proceeds from transfer 1,334 1,882  
Net gains (losses) on sale 0 0  
Excluding resecuritization [Member] | Total Consumer [Member] | Residential mortgage [Member] | Fair value, inputs, level 3 [Member]      
Quantitative Information, Transferor's Continuing Involvement [Line Items]      
Servicing rights recognized 17 24  
Excluding resecuritization [Member] | Total Consumer [Member] | Residential mortgage [Member] | Fair value, inputs, level 2 [Member]      
Quantitative Information, Transferor's Continuing Involvement [Line Items]      
Securities and loans recognized 0 0  
Excluding resecuritization [Member] | Total Commercial [Member] | Commercial mortgages [Member]      
Quantitative Information, Transferor's Continuing Involvement [Line Items]      
Assets sold 2,340 675  
Proceeds from transfer 2,360 686  
Net gains (losses) on sale 20 11  
Excluding resecuritization [Member] | Total Commercial [Member] | Commercial mortgages [Member] | Fair value, inputs, level 3 [Member]      
Quantitative Information, Transferor's Continuing Involvement [Line Items]      
Servicing rights recognized 18 11  
Excluding resecuritization [Member] | Total Commercial [Member] | Commercial mortgages [Member] | Fair value, inputs, level 2 [Member]      
Quantitative Information, Transferor's Continuing Involvement [Line Items]      
Securities and loans recognized 44 0  
Government insured or guaranteed [Member] | Excluding resecuritization [Member] | Total Consumer [Member] | Residential mortgage [Member]      
Quantitative Information, Transferor's Continuing Involvement [Line Items]      
Net gains (losses) on sale 0 0  
VIEs that we do not consolidate [Member] | Excluding resecuritization [Member]      
Securitizations and Variable Interest Entities Textual [Abstract]      
Maximum exposure to loss 5,270   $ 5,294
VIEs that we do not consolidate [Member] | Conforming mortgage loan securitization [Member]      
Securitizations and Variable Interest Entities Textual [Abstract]      
Carrying value of delinquent loans eligible for repurchase 729   751
Principal amount that would be payable to securitization vehicles 729   751
Repurchases of assets/loss reimbursements 55 $ 97  
Liability for mortgage repurchase reserves amount, fair value 173   189
Maximum exposure to loss $ 13,900   $ 13,900