Business Segment Information (Details 4) (USD $) In Millions	12 Months Ended
	May 31, 2011		May 31, 2010		May 31, 2009
Entity Wide Information About Geographic Areas Abstract
U.S. revenue	$ 27,461		$ 24,852		$ 25,819
U.S. Noncurrent assets	17,235		16,089		15,615
International Noncurrent assets	1,865		1,529		1,513
Total Noncurrent Assets	19,100	[1]	17,618	[1]	17,128	[1]
FedEx Express Segment [Member]
Entity Wide Information About Geographic Areas Abstract
International revenue	11,437		9,547		9,363
Total revenue	24,581		21,555		22,364
FedEx Ground Segment [Member]
Entity Wide Information About Geographic Areas Abstract
International revenue	177		140		124
Total revenue	8,485		7,439		7,047
FedEx Freight Segment [Member]
Entity Wide Information About Geographic Areas Abstract
International revenue	84		60		39
Total revenue	4,911		4,321		4,415
FedEx Services Segment [Member]
Entity Wide Information About Geographic Areas Abstract
International revenue	145		135		152
Total revenue	1,684		1,770		1,977
International Total [Member]
Entity Wide Information About Geographic Areas Abstract
International revenue	11,843	[1]	9,882	[1]	9,678	[1]
Consolidated Total [Member]
Entity Wide Information About Geographic Areas Abstract
Total revenue	$ 39,304		$ 34,734		$ 35,497

[1] International revenue includes shipments that either originate in or are destined to locations outside the United States. Noncurrent assets include property and equipment, goodwill and other long-term assets. Our flight equipment registered in the U.S. is included as U.S. assets; however, many of our aircraft operate internationally.