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Income Taxes - Narrative (Details) - USD ($)
$ in Millions
12 Months Ended
May 31, 2024
May 31, 2023
Income Tax Disclosure [Abstract]    
Tax net operating losses $ 284.8 $ 114.8
Operating loss carryforwards, not subject to expiration 244.8  
Increase in valuation allowance $ 31.3 $ 6.4