Investments - Equity Securities without Readily Determinable Fair Value (Details) - USD ($) $ in Millions |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Investments, Debt and Equity Securities [Abstract] | ||
| Measurement alternative | $ 1,242 | $ 1,140 |
| Equity method | 260 | 230 |
| Total Nonmarketable securities | $ 1,502 | $ 1,370 |