Allocation of voluntary contributions (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Voluntary Contributions | ||||
| AHP Homeownership Set-aside Program | $ 6 | $ 5 | $ 10 | $ 8 |
| Supplemental voluntary contribution to AHP | 3 | 2 | 4 | 3 |
| Total voluntary AHP contributions | 9 | 7 | 14 | 11 |
| Workforce Housing Plus+ Program | 13 | 13 | 20 | 20 |
| Multifamily Housing Development Fund (1) | 4 | 0 | 6 | 0 |
| Heirs’ Property Family Wealth Protection Fund | 0 | 0 | 1 | 0 |
| Voluntary non-AHP expense | 17 | 13 | 27 | 20 |
| Total voluntary housing and community investment | $ 26 | $ 20 | $ 41 | $ 31 |