Mortgage Loans Held for Portfolio - By Type (Details) - Residential Portfolio Segment - USD ($) $ in Thousands |
Jun. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
| Total mortgage loans held for portfolio, UPB | $ 12,791,642 | $ 12,207,389 |
| Government-guaranteed or -insured | ||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
| Total mortgage loans held for portfolio, UPB | 428,215 | 386,473 |
| Conventional | ||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
| Total mortgage loans held for portfolio, UPB | $ 12,363,427 | $ 11,820,916 |