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Business Segments and Disaggregated Revenue - Schedule of Segment Information (Parenthetical) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
May 31, 2021 | May 31, 2020 | May 31, 2019
Segment Reporting Information [Line Items] |  |  |
Integration expenses | $ 210 | $ 270 | $ 388
Business realignment costs | 116 |  | 320
Goodwill and other asset impairment charges |  | 435 |
FedEx Express Segment [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Business realignment costs | $ 116 |  |
FedEx Office and FedEx Express [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Goodwill and other asset impairment charges |  | $ 435 |
FedEx Ground Segment [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Ground independent contractor legal expense |  |  | $ 46

X
- Definition Amount charged against earnings in the period for incurred and estimated costs associated with business realignment activities, such as voluntary severance costs and external professional fees, pursuant to a duly authorized plan. + References No definition available. + Details
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X
- Definition Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=109226348&loc=d3e2420-110228 + Details
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X
- Definition Costs incurred to effect a business combination which have been expensed during the period. Such costs could include business integration costs, systems integration and conversion costs, and severance and other employee-related costs. + References No definition available. + Details
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- Definition Amount of litigation expense, including but not limited to legal, forensic, accounting, and investigative fees. + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Details
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- Details
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- Details
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