Leases (Details 5)	May 31, 2013	May 31, 2012
Other Lease Information (Details) [Abstract]
Percentage Total Aircraft Fleet Leased	10.00%	10.00%
Operating Leases Weighted-Average Remaining Lease Term	6 years

The weighted-average remaining lease term for all operating leases outstanding at the period-end date.

No definition available.

Name:	fdx_WeightedAverageRemainingLeaseTermOperating
Namespace Prefix:	fdx_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	instant