Description of Business and Summary of Significant Accounting Policies (Tables)

12 Months Ended

May 31, 2013

Property And Equipment (Tables) [Abstract]

Schedule of Depreciable Lives and Net Book Value of Property and Equipment

		Net Book Value at May 31,
	Range	2013		2012
Wide-body aircraft and related equipment	15 to 30 years	$	7,191	$	7,161
Narrow-body and feeder aircraft and related equipment	5 to 18 years		2,284		1,881
Package handling and ground support equipment	3 to 30 years		2,311		2,101
Vehicles	3 to 15 years		1,748		1,411
Computer and electronic equipment	2 to 10 years		993		930
Facilities and other	2 to 40 years		3,957		3,764