Loan Sale and Servicing Activities and Variable Interest Entities (Principal Balance, Delinquent Loans (Loans 90 Days or More Past Due), and Net Charge-Offs Related to Serviced Loans) (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 |
|
| Residential mortgage loans held for sale | |||||
| Total principal balance | $ 36,104 | $ 36,104 | $ 36,088 | ||
| Delinquent loans | 253 | 253 | 274 | ||
| Net charge-offs | 1 | $ 0 | 2 | $ 1 | |
| Commercial mortgage loans held for sale | |||||
| Total principal balance | 55,628 | 55,628 | 55,145 | ||
| Delinquent loans | 207 | 207 | $ 216 | ||
| Net charge-offs | $ 11 | $ (1) | $ 42 | $ 9 | |