NET GAIN/(LOSS) ON TRADING SECURITIES - Narrative (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
Mar. 31, 2024 |
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| Investments, Debt and Equity Securities [Abstract] | |||
| Net gain recognized during the period on trading securities sold during the period | $ 163,963 | $ 65,855 | $ 38,125 |
| Net unrealized loss recognized during the reporting period on trading securities still held at the reporting date | $ 5,139 | $ 123,665 | $ (95,729) |
| X | ||||||||||
- Definition Amount of realized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in net income (trading). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount of unrealized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in net income (trading). Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- References No definition available.
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