Investments - Equity Securities (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
|
| Investments, Debt and Equity Securities [Abstract] | ||||
| Realized loss recognized in gain (loss) on investments, net | $ (3) | $ (2) | $ (3) | $ (2) |
| Unrealized gain (loss) recognized in gain (loss) on investments, net | $ 1 | $ 0 | $ 2 | $ (21) |