Commitments (Details 2) - Aug. 31, 2015	USD ($)
Schedule of Aircraft Commitments [Line Items]
2016 (remainder)	7
2017	12
2018	18
2019	15
2020	15
Thereafter	35
Total	102
Boeing 777 Freighter [Member]
Schedule of Aircraft Commitments [Line Items]
2016 (remainder)	1
2018	2
2019	2
2020	3
Thereafter	9
Total	17
Boeing 767 Freighter [Member]
Schedule of Aircraft Commitments [Line Items]
2016 (remainder)	6
2017	12
2018	16
2019	13
2020	12
Thereafter	26
Total	85

The total number of aircraft committed to be purchased.

No definition available.

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The number of aircraft committed to be purchased with a delivery date after the fifth fiscal year.

No definition available.

Name:	fdx_AircraftPurchaseObligationWithDeliveryDueAfterFifthFiscalYear
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The number of aircraft committed to be purchased with a delivery date in the fifth fiscal year.

No definition available.

Name:	fdx_AircraftPurchaseObligationWithDeliveryDueInFifthFiscalYear
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The number of aircraft committed to be purchased with a delivery date in the fourth fiscal year.

No definition available.

Name:	fdx_AircraftPurchaseObligationWithDeliveryDueInFourthFiscalYear
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The number of aircraft committed to be purchased with a delivery date in the second fiscal year.

No definition available.

Name:	fdx_AircraftPurchaseObligationWithDeliveryDueInSecondFiscalYear
Namespace Prefix:	fdx_
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The number of aircraft committed to be purchased with a delivery date in the third fiscal year.

No definition available.

Name:	fdx_AircraftPurchaseObligationWithDeliveryDueInThirdFiscalYear
Namespace Prefix:	fdx_
Data Type:	xbrli:integerItemType
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The number of aircraft committed to be purchased with a delivery date within the current fiscal year.

No definition available.

Name:	fdx_AircraftPurchaseObligationWithDeliveryWithinFiscalYear
Namespace Prefix:	fdx_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

No definition available.

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	fdx_AircraftPurchaseObligationAxis=fdx_Boeing767FreighterMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: