Goodwill and Other Intangible Assets (Details 2) (USD $) In Millions	12 Months Ended
May 31, 2010	May 31, 2009
Goodwill Impairment Charges Abstract
Goodwill impairment charge	$ 18
FedEx Freight Segment [Member]
Goodwill Impairment Charges Abstract
Goodwill impairment charge	18	90
FedEx Services Segment [Member]
Goodwill Impairment Charges Abstract
Goodwill impairment charge		$ 810

Loss recognized during the period that results from the write-down of goodwill after comparing the implied fair value of reporting unit goodwill with the carrying amount of that goodwill. Goodwill is assessed at least annually for impairment.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 142
-Paragraph 45
-Subparagraph e(2)

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 142
-Paragraph 43

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 142
-Paragraph 47
-Subparagraph b

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 142
-Paragraph 20

Name:	us-gaap_GoodwillImpairmentLoss
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration