Commitments (Details 1) (USD $) In Millions	May 31, 2011
Schedule of Purchase Commitments [Line Items]
2012	$ 2,398
2013	1,191
2014	824
2015	599
2016	595
Thereafter	1,602
Aircraft And Related Equipment Commitments [Member]
Schedule of Purchase Commitments [Line Items]
2012	1,480
2013	1,086
2014	781
2015	569
2016	584
Thereafter	1,470
Facilities And Other Commitments [Member]
Schedule of Purchase Commitments [Line Items]
2012	918
2013	105
2014	43
2015	30
2016	11
Thereafter	$ 132

Name:	fdx_ScheduleOfPurchaseCommitmentsLineItems
Namespace Prefix:	fdx
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

The amount of the fixed and determinable portion of an unrecorded unconditional purchase obligation due after the fifth fiscal year.

Name:	fdx_UnrecordedUnconditionalPurchaseObligationDueAfterFifthYear
Namespace Prefix:	fdx
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The amount of the fixed and determinable portion of an unrecorded unconditional purchase obligation due in the fifth fiscal year.

Name:	fdx_UnrecordedUnconditionalPurchaseObligationDueInFifthYear
Namespace Prefix:	fdx
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The amount of the fixed and determinable portion of an unrecorded unconditional purchase obligation due in the fourth fiscal year.

Name:	fdx_UnrecordedUnconditionalPurchaseObligationDueInFourthYear
Namespace Prefix:	fdx
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The amount of the fixed and determinable portion of an unrecorded unconditional purchase obligation due in the second fiscal year.

Name:	fdx_UnrecordedUnconditionalPurchaseObligationDueInSecondYear
Namespace Prefix:	fdx
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The amount of the fixed and determinable portion of an unrecorded unconditional purchase obligation due in the third fiscal year.

Name:	fdx_UnrecordedUnconditionalPurchaseObligationDueInThirdYear
Namespace Prefix:	fdx
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The amount of the fixed and determinable portion of an unrecorded unconditional purchase obligation due within the next fiscal year.

Name:	fdx_UnrecordedUnconditionalPurchaseObligationDueWithinFiscalYear
Namespace Prefix:	fdx
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant