Fair Value Gains (Losses) on Fair Value Option (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
|
| Fair Value, Option, Quantitative Disclosures [Line Items] | ||||
| Noninterest income (loss) - Instruments held under the fair value option | $ 1 | $ (1) | $ 1 | $ (6) |
| Advances | ||||
| Fair Value, Option, Quantitative Disclosures [Line Items] | ||||
| Noninterest income (loss) - Instruments held under the fair value option | 2 | 0 | 4 | (1) |
| Discount notes | ||||
| Fair Value, Option, Quantitative Disclosures [Line Items] | ||||
| Noninterest income (loss) - Instruments held under the fair value option | 0 | 0 | 0 | (2) |
| Consolidated obligation bonds | ||||
| Fair Value, Option, Quantitative Disclosures [Line Items] | ||||
| Noninterest income (loss) - Instruments held under the fair value option | 0 | 0 | (3) | (1) |
| Other | ||||
| Fair Value, Option, Quantitative Disclosures [Line Items] | ||||
| Noninterest income (loss) - Instruments held under the fair value option | $ (1) | $ (1) | $ 0 | $ (2) |