v3.25.2
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, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Dec. 31, 2024
Variable Interest Entity [Line Items]          
Tax credits related to tax-advantaged investments $ 212 $ 144 $ 364 $ 283  
Expense related to tax-advantaged investments 155 $ 145 301 $ 283  
Investments in VIEs 686,370   686,370   $ 678,318
Available-for-sale securities [1] 90,577   90,577   85,992
Liabilities related to VIEs 624,474   624,474   619,278
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 186   186   79
Variable Interest Entity, Not Primary Beneficiary, Private Investment Funds and Partnerships          
Variable Interest Entity [Line Items]          
Investments in VIEs 297   297   264
Maximum exposure to loss 410   410   382
Variable Interest Entity, Not Primary Beneficiary, Securitization Vehicles | Senior Notes          
Variable Interest Entity [Line Items]          
Available-for-sale securities 2,300   2,300   3,200
Collateral held related to senior notes 2,700   2,700   3,600
Variable Interest Entity, Primary Beneficiary, Community Development and Tax-Advantaged Investments          
Variable Interest Entity [Line Items]          
Investments in VIEs 5,900   5,900   6,400
Liabilities related to VIEs $ 3,700   $ 3,700   $ 4,200
[1] Includes only collateral pledged by the Company where counterparties have the right to sell or pledge the collateral.