Name:	fdx_RatioOfOutstandingAndAvailableToGrantSharesToOutstandingCommonAndEquityCompensationSharesAndEquityCompensationSharesAvailableForGrant
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Ratio Of Outstanding And Available To Grant Shares To Outstanding Common And Equity Compensation Shares And Equity Compensation Shares Available For Grant [Abstract]

No definition available.

Name:	fdx_RatioOfOutstandingAndAvailableToGrantSharesToOutstandingCommonAndEquityCompensationSharesAndEquityCompensationSharesAvailableForGrantAbstract
Namespace Prefix:	fdx_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

The time period after which the equity-based award restrictions expires as specified in the award agreement.

No definition available.

Name:	fdx_RestrictedStocksExpirationPeriod
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Data Type:	xbrli:stringItemType
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Period Type:	duration

The maximum period of time an equity-based award is expected to be outstanding.

No definition available.

Name:	fdx_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedMaximumTerm
Namespace Prefix:	fdx_
Data Type:	xbrli:durationItemType
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Share Based Compensation Arrangement Stock Options [Abstract]

No definition available.

Name:	fdx_ShareBasedCompensationArrangementStockOptionsAbstract
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Period of time over which a employee's right to exercise a stock option is no longer contingent on satisfaction of a service condition.

No definition available.

Name:	fdx_StockOptionsVestingPeriodRange
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Data Type:	xbrli:stringItemType
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Period Type:	duration

Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (i)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- References

No definition available.

Name:	us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Data Type:	xbrli:durationItemType
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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(1)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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Data Type:	xbrli:sharesItemType
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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(1)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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Data Type:	dtr-types:perShareItemType
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Period Type:	duration

Description of method used to estimate fair value of award under share-based payment arrangement.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (f)(1)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901