Advances (Narrative) (Details) - USD ($) $ in Millions |
Mar. 31, 2025 |
Dec. 31, 2024 |
May 01, 2023 |
|---|---|---|---|
| Advances [Line Items] | |||
| Advances with Full prepayment Symmetry Outstanding | $ 22,300 | $ 29,400 | |
| Advances With Partial Prepayment Symmetry Outstanding | 119 | 142 | |
| Advances, Par Value | 37,954 | 45,818 | |
| Advances | 37,913 | 45,637 | |
| Allowance for credit losses on mortgage loans | 1 | 1 | |
| Financing Receivable, Excluding Accrued Interest, Nonaccrual | 0 | 0 | |
| First Republic Bank | JPMorgan Chase | |||
| Advances [Line Items] | |||
| Advances | $ 28,100 | ||
| Federal Home Loan Bank Advances | |||
| Advances [Line Items] | |||
| Accrued Interest Receivable | 64 | 63 | |
| Allowance for credit losses on mortgage loans | 0 | 0 | |
| Percentage of Total Advances Outstanding | |||
| Advances [Line Items] | |||
| Advances Outstanding, Redemption Terms Within Three Months | 10,200 | 15,100 | |
| Advances, Callable Option | |||
| Advances [Line Items] | |||
| Advances, Par Value | 2,900 | 2,700 | |
| Advances, Putable Option | |||
| Advances [Line Items] | |||
| Advances, Par Value | $ 4,900 | $ 4,600 |