Commitments (Details 4) - Aug. 31, 2015 $ in Millions	USD ($)
Other Aircraft Commitments Disclosure [Abstract]
Boeing 777F Conditional Aircraft Commitments	9
Boeing 767F Conditional Aircraft Commitments	6
Boeing 767F Aircraft Purchases	50
Other Commitment Disclosures [Line Items]
Deposit and Progress Payments	$ 411
Required Pensions Contributions Remaining	$ 495

The number of total additional Boeing 767F aircraft purchases in the current quarter.

No definition available.

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Namespace Prefix:	fdx_
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- Definition

The number of Boeing 767F aircraft committed to be purchased which are conditional on certain events.

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No definition available.

+ Details

Name:	fdx_ConditionalAircraftCommitmentsBoeing767
Namespace Prefix:	fdx_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

The number of Boeing 777F aircraft committed to be purchased which are conditional on certain events.

+ References

No definition available.

+ Details

Name:	fdx_ConditionalAircraftCommitmentsBoeing777
Namespace Prefix:	fdx_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Balance of deposits and progress payments on aircraft purchases and other planned aircraft-related transactions.

+ References

No definition available.

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Name:	fdx_DepositAndProgressPayments
Namespace Prefix:	fdx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- References

No definition available.

+ Details

Name:	fdx_OtherAircraftCommitmentsDisclosureAbstract
Namespace Prefix:	fdx_
Data Type:	xbrli:stringItemType
Balance Type:	na
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- References

No definition available.

+ Details

Name:	fdx_OtherCommitmentDisclosuresLineItems
Namespace Prefix:	fdx_
Data Type:	xbrli:stringItemType
Balance Type:	na
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- Definition

The amount of required fixed and determinable portion of an unrecorded unconditional purchase obligation related to U.S. domestic pension plans due within the current fiscal year.

+ References

No definition available.

+ Details

Name:	fdx_RequiredPensionsContributionsRemaining
Namespace Prefix:	fdx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant