Equity Securities, Net Gains (Losses) from Equity Securities Not Held for Trading (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Equity Securities [Abstract] | ||||
| Net gains (losses) from equity securities carried at fair value | $ 251 | $ 155 | $ 82 | $ (40) |
| Impairment write-downs | (368) | (124) | (483) | (318) |
| Net unrealized gains (losses) | 626 | 33 | 789 | 34 |
| Net realized gains (losses) | 338 | 55 | 631 | 100 |
| Total net gains (losses) from equity securities not carried at fair value | 596 | (36) | 937 | (184) |
| Total net gains (losses) from equity securities | $ 847 | $ 119 | $ 1,019 | $ (224) |