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Investments - Summary of Investments in Equity Securities (Details) - USD ($) $ in Millions | May 31, 2024 | May 31, 2023
--- | --- | ---
Equity Securities [Line Items] |  |
Equity securities with readily determinable fair values | $ 100 | $ 91
Total equity securities | 360 | 302
NAV Practical Expedient [Member] |  |
Equity Securities [Line Items] |  |
Equity securities without readily determinable fair values | 37 | 26
Measurement Alternative [Member] |  |
Equity Securities [Line Items] |  |
Equity securities without readily determinable fair values | $ 223 | $ 185

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