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Benefit Plans - Additional Information (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
May 31, 2023 | May 31, 2022 | May 31, 2021
Retirement Benefits [Abstract] |  |  |
401(k) employee savings plans, expenses | $ 136 | $ 126 | $ 110
Assets held in rabbi trust | 875 | 876 |
Deferred compensation plan liabilities | 897 | 890 |
Liability related to the unfunded pension plan | $ 29 | $ 30 |

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