Equity Securities, Net Gains (Losses) from Measurement Alternative Equity Securities (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Net Gains (Losses) from Measurement Alternative Equity Securities | |||
| Total net gains (losses) from equity securities not carried at fair value | $ 119 | $ 628 | $ (525) |
| Measurement alternative [Member] | Not held for trading [Member] | |||
| Net Gains (Losses) from Measurement Alternative Equity Securities | |||
| Gross unrealized gains from observable price changes | 440 | 758 | 607 |
| Gross unrealized losses from observable price changes | (47) | (9) | (29) |
| Impairment write-downs | (401) | (618) | (1,113) |
| Net realized gains (losses) from sale | 90 | 227 | 42 |
| Total net gains (losses) from equity securities not carried at fair value | $ 82 | $ 358 | $ (493) |