Net Trading Gains (Losses) (Detail) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
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| Investments, Debt and Equity Securities [Abstract] | ||||
| Debt Securities, Trading, Realized Gain (Loss) | $ (7) | $ (16) | $ 21 | $ (94) |
| Debt Securities, Trading, Unrealized Gain (Loss) | 221 | 56 | 554 | (105) |
| Net Trading Gains (Losses) | $ 214 | $ 40 | $ 575 | $ (199) |
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- Definition Amount of unrealized and realized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in net income (trading). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of realized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in net income (trading). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of unrealized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in net income (trading). Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- References No definition available.
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