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Recent Accounting Guidance - Additional Information (Details) - USD ($) $ in Millions | Jun. 01, 2019 | May 31, 2020
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New Accounting Pronouncements Or Change In Accounting Principle [Line Items] |  |
Operating lease liability | $ 14,200 | $ 14,118
Operating right-of-use asset | 14,100 | $ 13,917
Cumulative effect on retained earnings, before tax | 57 |
Cumulative effect on retained earnings, net of tax | 47 |
Prepaid Asset [Member] |  |
New Accounting Pronouncements Or Change In Accounting Principle [Line Items] |  |
Operating right-of-use asset | 154 |
Net Deferred Rent Liability [Member] |  |
New Accounting Pronouncements Or Change In Accounting Principle [Line Items] |  |
Operating right-of-use asset | $ 309 |

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- Definition Present value of lessee's discounted obligation for lease payments from operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977 + Details
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