Equity Investments - Schedule of Gains (Losses) on Non-Marketable Securities (Details) - USD ($) $ in Millions |
3 Months Ended | |
|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Investments, All Other Investments [Abstract] | ||
| Observable price adjustments on non-marketable equity securities (includes NAV) | $ 10 | $ 1 |
| Total income (loss) from equity investments in non-marketable securities, net | $ 10 | $ 1 |