Guarantees and Contingent Liabilities - Other Guarantees and Contingent Liabilities (Details) $ in Millions |
Jun. 30, 2026
USD ($)
|
|---|---|
| Other | |
| Guarantor Obligations [Line Items] | |
| Collateral Held | $ 0 |
| Carrying Amount | 20 |
| Maximum Potential Future Payments | 2,955 |
| Standby letters of credit | |
| Guarantor Obligations [Line Items] | |
| Collateral Held | 0 |
| Carrying Amount | 26 |
| Maximum Potential Future Payments | 12,300 |
| Securities lending indemnifications | |
| Guarantor Obligations [Line Items] | |
| Collateral Held | 10,106 |
| Carrying Amount | 0 |
| Maximum Potential Future Payments | 9,926 |
| Asset sales | |
| Guarantor Obligations [Line Items] | |
| Collateral Held | 0 |
| Carrying Amount | 128 |
| Maximum Potential Future Payments | 17,656 |
| Merchant processing | |
| Guarantor Obligations [Line Items] | |
| Collateral Held | 456 |
| Carrying Amount | 51 |
| Maximum Potential Future Payments | $ 156,990 |