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Income Taxes - Additional Information (Details) - Federal Income Tax - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Jul. 31, 2024 | Apr. 30, 2024
Operating Loss Carryforwards [Line Items] |  |
Cumulative net operating loss | $ 56 | $ 54
Net operating loss carry-forward expiration year | 2028 |

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