Allowance for Credit Losses - Components of the Allowance (Details) - USD ($) $ in Millions |
Mar. 31, 2026 |
Dec. 31, 2025 |
Mar. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|---|---|
| Components of allowance for credit losses: | ||||
| Allowance for loan losses | $ (8,357) | $ (8,364) | $ (7,532) | |
| Other | (235) | (190) | ||
| Total | (8,592) | (8,592) | (7,722) | $ (7,886) |
| Single-family | ||||
| Components of allowance for credit losses: | ||||
| Allowance for loan losses | (6,060) | (5,178) | ||
| Other | (226) | (178) | ||
| Total | (6,286) | (6,272) | (5,356) | (5,487) |
| Multifamily | ||||
| Components of allowance for credit losses: | ||||
| Allowance for loan losses | (2,297) | (2,354) | ||
| Other | (9) | (12) | ||
| Total | $ (2,306) | $ (2,320) | $ (2,366) | $ (2,399) |