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INVESTMENTS (Tables)
 12 Months Ended
May 31, 2025
Investments, Debt and Equity Securities [Abstract]  
Schedule of Investments in Equity Securities The summary of our investments in equity securities at May 31, 2025 and 2024 is as follows (in millions):
20252024
Equity securities with readily determinable fair values$91 $100 
Equity securities without readily determinable fair values - NAV practical expedient51 37 
Equity securities without readily determinable fair values - measurement alternative364 223 
Total equity securities$506 $360 
Schedule of Investments in Debt Securities The summary of our investments in debt securities at May 31, 2025 and 2024 is as follows (in millions):
20252024
Gross UnrealizedGross Unrealized
CostGainsLossesEstimated Fair ValueCostGainsLossesEstimated Fair Value
Fixed-income securities$69 $1 $— $70 $76 $1 $— $77 
Total debt securities$69 $1 $— $70 $76 $1 $— $77