Financial Instruments - Schedule of Adjusted to Equity and Other Investments without Readily Determinable Fair Values (Details) - Equity Securities Without Readily Determinable Fair Value - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
|
| Equity Securities Adjustments [Roll Forward] | ||||
| Balance, beginning of the period | $ 709 | $ 498 | $ 717 | $ 505 |
| Purchases of equity and other investments | 71 | 106 | 75 | 107 |
| Gross unrealized gains | 165 | 79 | 165 | 80 |
| Sales of equity and other investments | (1) | 0 | (1) | 0 |
| Gross unrealized losses and impairments | (3) | 0 | (15) | (9) |
| Transfers out of measurement alternative | 47 | 0 | 47 | 0 |
| Balance, end of the period | 988 | 683 | 988 | 683 |
| Accrued interest | 2 | 2 | ||
| Private Investment | ||||
| Equity Securities Adjustments [Roll Forward] | ||||
| Gross unrealized gains | 163 | $ 78 | 163 | $ 78 |
| Transfers out of measurement alternative | $ 45 | $ 45 | ||