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Benefit Plans - Additional Information (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
May 31, 2020 | May 31, 2019 | May 31, 2018
Deferred income taxes and other long-term liabilities |  |  |
Defined Contribution Plan Disclosure [Line Items] |  |  |
Deferred compensation plan liabilities | $ 725 | $ 647 |
Liability related to the unfunded pension plan | 79 | 73 |
General and Administrative Expense |  |  |
Defined Contribution Plan Disclosure [Line Items] |  |  |
401(k) employee savings plans, expenses | 107 | 90 | $ 80
General and Administrative Expense | Profit Sharing Plan |  |  |
Defined Contribution Plan Disclosure [Line Items] |  |  |
Contribution and cash award expenses included in selling and administrative expenses | 0 | 37 | 59
General and Administrative Expense | Long Term Incentive Plan |  |  |
Defined Contribution Plan Disclosure [Line Items] |  |  |
Contribution and cash award expenses included in selling and administrative expenses | $ 66 | $ 83 | $ 33

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