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Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
May 31, 2021 | May 31, 2020 | May 31, 2019
Significant Accounting Policies [Line Items] |  |  |
Total advertising and promotion expenses | $ 3,114 | $ 3,592 | $ 3,753
Prepaid advertising and promotion expenses | 630 | 686 |
Allowance for uncollectible accounts receivable | $ 93 | 214 |
Building | Minimum |  |  |
Significant Accounting Policies [Line Items] |  |  |
Property, plant and equipment, minimum useful life (in years) | 2 years |  |
Building | Maximum |  |  |
Significant Accounting Policies [Line Items] |  |  |
Property, plant and equipment, minimum useful life (in years) | 40 years |  |
Leasehold improvements | Minimum |  |  |
Significant Accounting Policies [Line Items] |  |  |
Property, plant and equipment, minimum useful life (in years) | 2 years |  |
Leasehold improvements | Maximum |  |  |
Significant Accounting Policies [Line Items] |  |  |
Property, plant and equipment, minimum useful life (in years) | 40 years |  |
Land Improvements | Minimum |  |  |
Significant Accounting Policies [Line Items] |  |  |
Property, plant and equipment, minimum useful life (in years) | 2 years |  |
Land Improvements | Maximum |  |  |
Significant Accounting Policies [Line Items] |  |  |
Property, plant and equipment, minimum useful life (in years) | 40 years |  |
Machinery and Equipment | Minimum |  |  |
Significant Accounting Policies [Line Items] |  |  |
Property, plant and equipment, minimum useful life (in years) | 2 years |  |
Machinery and Equipment | Maximum |  |  |
Significant Accounting Policies [Line Items] |  |  |
Property, plant and equipment, minimum useful life (in years) | 15 years |  |
Software and Software Development Costs | Minimum |  |  |
Significant Accounting Policies [Line Items] |  |  |
Property, plant and equipment, minimum useful life (in years) | 2 years |  |
Software and Software Development Costs | Maximum |  |  |
Significant Accounting Policies [Line Items] |  |  |
Property, plant and equipment, minimum useful life (in years) | 12 years |  |
Prepaid expenses and other current assets |  |  |
Significant Accounting Policies [Line Items] |  |  |
Prepaid advertising and promotion expenses | $ 338 | 326 |
Deferred income taxes and other assets |  |  |
Significant Accounting Policies [Line Items] |  |  |
Prepaid advertising and promotion expenses | $ 292 | $ 360 |

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- Definition Amount of allowance for credit loss on accounts receivable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121599337&loc=SL82919249-210447 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=121611835&loc=d3e5074-111524 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=121599337&loc=SL82919249-210447 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121599878&loc=SL82895884-210446 + Details
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