UPB of Loans Underlying Our Guarantees by Payment Status (Details) - USD ($) $ in Millions |
Sep. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Guarantor Obligations [Line Items] | ||
| Current | $ 343,517 | $ 373,214 |
| One Month Past Due | 2,203 | 2,375 |
| Two Months Past Due | 771 | 1,078 |
| Three Months or More Past Due, or in Foreclosure | 3,726 | 3,145 |
| Total | 350,217 | 379,812 |
| Single family | ||
| Guarantor Obligations [Line Items] | ||
| Current | 31,162 | 32,713 |
| One Month Past Due | 1,883 | 2,234 |
| Two Months Past Due | 697 | 860 |
| Three Months or More Past Due, or in Foreclosure | 1,320 | 1,430 |
| Total | 35,062 | 37,237 |
| Multifamily | ||
| Guarantor Obligations [Line Items] | ||
| Current | 312,355 | 340,501 |
| One Month Past Due | 320 | 141 |
| Two Months Past Due | 74 | 218 |
| Three Months or More Past Due, or in Foreclosure | 2,406 | 1,715 |
| Total | $ 315,155 | $ 342,575 |