Income Taxes - Schedule of (Loss) Income Before Income Taxes and Related Expense (Benefit) (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
Mar. 31, 2024 |
|
| (Loss) income before income taxes: | |||
| Total (loss) income from continuing operations before income taxes | $ (264,578) | $ (681,590) | $ 4,567,856 |
| Bermuda | |||
| (Loss) income before income taxes: | |||
| Total (loss) income from continuing operations before income taxes | 62,366 | (80,590) | 5,189,812 |
| United States | |||
| (Loss) income before income taxes: | |||
| Total (loss) income from continuing operations before income taxes | (354,509) | (174,763) | (232,592) |
| Switzerland | |||
| (Loss) income before income taxes: | |||
| Total (loss) income from continuing operations before income taxes | 21,711 | (426,478) | (389,948) |
| Other | |||
| (Loss) income before income taxes: | |||
| Total (loss) income from continuing operations before income taxes | $ 5,854 | $ 241 | $ 584 |