Investments - Schedule of Carrying Value of Investments (Parentheticals) (Details) - USD ($) $ in Millions |
Mar. 31, 2025 |
Mar. 31, 2024 |
|---|---|---|
| Disclosure Of Investments Other Than Investments Accounted For Using Equity Method [Abstract] | ||
| Uncalled capital commitments outstanding | $ 14 | $ 9 |