v3.26.1
Accounting for Transfers and Servicing of Financial Assets and Variable Interest Entities - Additional Information (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Variable Interest Entity [Line Items]          
Tax credits related to tax-advantaged investments $ 153 $ 212 $ 321 $ 364  
Expense related to tax-advantaged investments 166 $ 155 331 $ 301  
Investments in VIEs 725,918   725,918   $ 692,345
Available-for-sale securities [1] 89,085   89,085   90,838
Liabilities related to VIEs 658,023   658,023   626,694
Variable Interest Entity Not Primary Beneficiary | Minimum          
Variable Interest Entity [Line Items]          
Net investments in unconsolidated VIEs 1   1   1
Variable Interest Entity Not Primary Beneficiary | Maximum          
Variable Interest Entity [Line Items]          
Net investments in unconsolidated VIEs 284   284   299
Variable Interest Entity, Not Primary Beneficiary, Private Investment Funds and Partnerships          
Variable Interest Entity [Line Items]          
Investments in VIEs 352   352   312
Maximum exposure to loss 486   486   439
Variable Interest Entity, Not Primary Beneficiary, Securitization Vehicles | Senior Notes          
Variable Interest Entity [Line Items]          
Available-for-sale securities 1,100   1,100   1,700
Collateral held related to senior notes 1,300   1,300   1,900
Variable Interest Entity, Primary Beneficiary, Community Development and Tax-Advantaged Investments          
Variable Interest Entity [Line Items]          
Investments in VIEs 6,500   6,500   6,200
Liabilities related to VIEs $ 4,200   $ 4,200   $ 3,800
[1] Includes only collateral pledged by the Company where counterparties have the right to sell or pledge the collateral.