Commitments (Details 2)	May 31, 2014
Schedule of Aircraft Commitments [Line Items]
2015	25
2016	13
2017	11
2018	12
2019	6
Thereafter	12
Total	79fdx_AircraftPurchaseObligation
Boeing 777 Freighter [Member]
Schedule of Aircraft Commitments [Line Items]
2016	2
2018	2
2019	2
Thereafter	12
Total	18
Boeing 757 [Member]
Schedule of Aircraft Commitments [Line Items]
2015	13
Total	13
Boeing 767 Freighter [Member]
Schedule of Aircraft Commitments [Line Items]
2015	12
2016	11
2017	11
2018	10
2019	4
Total	48

The total number of aircraft committed to be purchased.

No definition available.

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

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

No definition available.

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

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

No definition available.

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

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

No definition available.

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

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_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

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
Balance Type:	na
Period Type:	instant

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

No definition available.

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

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

Name:	fdx_AircraftPurchaseObligationAxis=fdx_Boeing757Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

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

Name:	fdx_AircraftPurchaseObligationAxis=fdx_Boeing777FreighterMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: