Other Borrowings - Additional Information (Details) - USD ($) $ in Millions |
3 Months Ended | |
|---|---|---|
Mar. 31, 2026 |
Dec. 31, 2025 |
|
| Debt [Line Items] | ||
| Federal funds purchased | $ 0 | $ 0 |
| Weighted average rate on FHLB advances, short-term | 3.98% | 4.02% |
| Weighted average rate on FHLB advances | 4.05% | 4.24% |
| Minimum | ||
| Debt [Line Items] | ||
| Period of basis point spread | 0.10% | |
| Maximum | ||
| Debt [Line Items] | ||
| Period of basis point spread | 0.20% | |
| Federal Home Loan Bank Advances | ||
| Debt [Line Items] | ||
| Additional available credit with the entity | $ 7,200 | $ 8,800 |
| FRB | ||
| Debt [Line Items] | ||
| Additional available credit with the entity | 15,700 | 17,800 |
| Warehouse Agreement Borrowings | ||
| Debt [Line Items] | ||
| Additional available credit with the entity | 2,100 | 2,100 |
| Warehouse Borrowings | $ 0 | $ 0 |
| Secured Debt | ||
| Debt [Line Items] | ||
| Weighted average borrowing rate | 6.00% | 6.14% |