XML 33 R33.htm IDEA: XBRL DOCUMENT v2.4.0.8
Description of Business and Summary of Significant Accounting Policies (Tables)
12 Months Ended
May 31, 2014
Property And Equipment (Tables) [Abstract]  
Schedule of Depreciable Lives and Net Book Value of Property and Equipment
   Net Book Value at May 31,
 Range 2014 2013
Wide-body aircraft and related equipment15 to 30 years $ 7,223 $ 7,191
Narrow-body and feeder aircraft and related equipment5 to 18 years   2,639   2,284
Package handling and ground support equipment3 to 30 years   2,676   2,311
Vehicles3 to 15 years   1,963   1,748
Computer and electronic equipment2 to 10 years   940   993
Facilities and other2 to 40 years   4,109   3,957