Investment Securities - Schedule of Estimated Effective Duration, Investments (Details) |
Mar. 31, 2026 |
|---|---|
| Investments, Debt and Equity Securities [Abstract] | |
| AFS investment securities portfolio, exclusive of derivatives | 2 years 3 months 18 days |
| AFS and HTM investment securities portfolios, exclusive of derivatives | 3 years 8 months 12 days |
| AFS investment securities portfolio, inclusive of derivatives | 2 years |
| AFS and HTM investment securities portfolios, inclusive of derivatives | 3 years 7 months 6 days |