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Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
May 31, 2020 | May 31, 2019 | May 31, 2018
Significant Accounting Policies [Line Items] |  |  |
Total advertising and promotion expenses | $ 3,592 | $ 3,753 | $ 3,577
Prepaid advertising and promotion expenses | 686 | 773 |
Allowance for uncollectible accounts receivable | $ 214 | 30 |
Minimum | Building |  |  |
Significant Accounting Policies [Line Items] |  |  |
Property, plant and equipment, minimum useful life (in years) | 2 years |  |
Minimum | Leasehold improvements |  |  |
Significant Accounting Policies [Line Items] |  |  |
Property, plant and equipment, minimum useful life (in years) | 2 years |  |
Minimum | Machinery and Equipment |  |  |
Significant Accounting Policies [Line Items] |  |  |
Property, plant and equipment, minimum useful life (in years) | 2 years |  |
Minimum | Software and Software Development Costs |  |  |
Significant Accounting Policies [Line Items] |  |  |
Property, plant and equipment, minimum useful life (in years) | 2 years |  |
Minimum | Land Improvements |  |  |
Significant Accounting Policies [Line Items] |  |  |
Property, plant and equipment, minimum useful life (in years) | 2 years |  |
Maximum | Building |  |  |
Significant Accounting Policies [Line Items] |  |  |
Property, plant and equipment, minimum useful life (in years) | 40 years |  |
Maximum | Leasehold improvements |  |  |
Significant Accounting Policies [Line Items] |  |  |
Property, plant and equipment, minimum useful life (in years) | 40 years |  |
Maximum | Machinery and Equipment |  |  |
Significant Accounting Policies [Line Items] |  |  |
Property, plant and equipment, minimum useful life (in years) | 15 years |  |
Maximum | Software and Software Development Costs |  |  |
Significant Accounting Policies [Line Items] |  |  |
Property, plant and equipment, minimum useful life (in years) | 12 years |  |
Maximum | Land Improvements |  |  |
Significant Accounting Policies [Line Items] |  |  |
Property, plant and equipment, minimum useful life (in years) | 40 years |  |
Prepaid expenses and other current assets |  |  |
Significant Accounting Policies [Line Items] |  |  |
Prepaid advertising and promotion expenses | $ 326 | 333 |
Deferred income taxes and other assets |  |  |
Significant Accounting Policies [Line Items] |  |  |
Prepaid advertising and promotion expenses | $ 360 | $ 440 |

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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=119407570&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=118936363&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=119407570&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=118955202&loc=SL82895884-210446 + Details
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- Definition The total expense recognized in the period for promotion, public relations, and brand or product advertising. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.4) -URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227 + Details
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- Definition Amount of consideration paid in advance for advertising that provides economic benefits within a future period of one year or the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (g)(6) -URI http://asc.fasb.org/extlink&oid=118951113&loc=d3e6676-107765 + Details
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