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MARGIN LENDING AND TRADE PAYABLES - Narrative (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Mar. 31, 2025
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Accounts Payable [Abstract] |  |
Margin loans, fair value of collateral | $ 4,345,807 | $ 4,521,411

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Balance Type: | credit
Period Type: | instant

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