Parent/Affiliate Transactions (Details) - USD ($) $ in Billions	Feb. 29, 2016	May. 31, 2015
Parent/Affiliate Transactions [Abstract]
Net Receivables Recorded by FedEx TechConnect	$ 1.6	$ 1.7

The total balance of receivables factored to FedEx TechConnect at the balance sheet date, for which no further involvement is maintained by the reporting entity.

No definition available.

Name:	fec_ReceivablesRecordedByAffiliate
Namespace Prefix:	fec_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant