UPB of Loans Underlying Our Guarantees by Payment Status (Details) - USD ($) $ in Millions |
Mar. 31, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Guarantor Obligations [Line Items] | ||
| Current | $ 363,992 | $ 373,214 |
| One Month Past Due | 2,462 | 2,375 |
| Two Months Past Due | 1,022 | 1,078 |
| Three Months or More Past Due, or in Foreclosure | 3,158 | 3,145 |
| Total | 370,634 | 379,812 |
| Single family | ||
| Guarantor Obligations [Line Items] | ||
| Current | 32,234 | 32,713 |
| One Month Past Due | 2,082 | 2,234 |
| Two Months Past Due | 831 | 860 |
| Three Months or More Past Due, or in Foreclosure | 1,425 | 1,430 |
| Total | 36,572 | 37,237 |
| Multifamily | ||
| Guarantor Obligations [Line Items] | ||
| Current | 331,758 | 340,501 |
| One Month Past Due | 380 | 141 |
| Two Months Past Due | 191 | 218 |
| Three Months or More Past Due, or in Foreclosure | 1,733 | 1,715 |
| Total | $ 334,062 | $ 342,575 |