Regulatory Capital Requirements (Details) $ in Thousands |
Jun. 30, 2026
USD ($)
capital_requirement
|
Dec. 31, 2025
USD ($)
|
|---|---|---|
| Banking Regulation, Total Capital [Abstract] | ||
| Number of regulatory capital requirements | capital_requirement | 3 | |
| Risk-based capital, required | $ 955,878 | $ 1,139,837 |
| Risk-based capital, actual | 4,819,898 | 4,776,293 |
| Regulatory capital, required | 3,617,114 | 3,450,392 |
| Regulatory capital, actual | $ 4,819,898 | $ 4,776,293 |
| Regulatory permanent capital-to-asset ratio, required | 4.00% | 4.00% |
| Regulatory permanent capital-to-asset ratio, actual | 5.33% | 5.54% |
| Leverage capital, required | $ 4,521,393 | $ 4,312,990 |
| Leverage capital, actual | $ 7,229,847 | $ 7,164,440 |
| Leverage ratio, required | 5.00% | 5.00% |
| Leverage ratio, actual | 8.00% | 8.31% |