Investments - Equity Securities without Readily Determinable Fair Value (Details) - USD ($) $ in Millions |
Dec. 31, 2024 |
Dec. 31, 2023 |
|---|---|---|
| Investments, Debt and Equity Securities [Abstract] | ||
| Measurement alternative | $ 1,140 | $ 1,008 |
| Equity method | 230 | 215 |
| Total Nonmarketable securities | $ 1,370 | $ 1,223 |