v3.26.1
BUSINESS SEGMENTS AND DISAGGREGATED REVENUE - Schedule of Revenue by Service Type (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Feb. 28, 2026
Feb. 28, 2025
Feb. 28, 2026
Feb. 28, 2025
Entity Wide Information Revenue From External Customer [Line Items]        
Revenue $ 24,000 $ 22,160 $ 69,713 $ 65,706
Operating Segments | Total Federal Express segment        
Entity Wide Information Revenue From External Customer [Line Items]        
Revenue 21,154 19,181 60,703 56,327
Operating Segments | Total Federal Express segment | Total package revenue        
Entity Wide Information Revenue From External Customer [Line Items]        
Revenue 19,353 17,658 55,357 51,161
Operating Segments | Total Federal Express segment | Total U.S. domestic package revenue        
Entity Wide Information Revenue From External Customer [Line Items]        
Revenue 14,351 13,018 40,457 36,834
Operating Segments | Total Federal Express segment | U.S. priority        
Entity Wide Information Revenue From External Customer [Line Items]        
Revenue 2,901 2,646 8,511 7,800
Operating Segments | Total Federal Express segment | U.S. deferred        
Entity Wide Information Revenue From External Customer [Line Items]        
Revenue 1,590 1,386 4,259 3,736
Operating Segments | Total Federal Express segment | U.S. ground        
Entity Wide Information Revenue From External Customer [Line Items]        
Revenue 9,860 8,986 27,687 25,298
Operating Segments | Total Federal Express segment | Total international export package revenue        
Entity Wide Information Revenue From External Customer [Line Items]        
Revenue 3,849 3,562 11,355 10,947
Operating Segments | Total Federal Express segment | International priority        
Entity Wide Information Revenue From External Customer [Line Items]        
Revenue 2,361 2,097 7,002 6,534
Operating Segments | Total Federal Express segment | International economy        
Entity Wide Information Revenue From External Customer [Line Items]        
Revenue 1,488 1,465 4,353 4,413
Operating Segments | Total Federal Express segment | International domestic        
Entity Wide Information Revenue From External Customer [Line Items]        
Revenue 1,153 1,078 3,545 3,380
Operating Segments | Total Federal Express segment | Total freight revenue        
Entity Wide Information Revenue From External Customer [Line Items]        
Revenue 1,462 1,307 4,391 4,417
Operating Segments | Total Federal Express segment | U.S.        
Entity Wide Information Revenue From External Customer [Line Items]        
Revenue 297 286 904 1,238
Operating Segments | Total Federal Express segment | International priority        
Entity Wide Information Revenue From External Customer [Line Items]        
Revenue 627 551 1,839 1,717
Operating Segments | Total Federal Express segment | International economy        
Entity Wide Information Revenue From External Customer [Line Items]        
Revenue 538 470 1,648 1,462
Operating Segments | Total Federal Express segment | Other        
Entity Wide Information Revenue From External Customer [Line Items]        
Revenue 339 216 955 749
Operating Segments | FedEx Freight segment        
Entity Wide Information Revenue From External Customer [Line Items]        
Revenue 1,991 2,089 6,387 6,595
Other and eliminations        
Entity Wide Information Revenue From External Customer [Line Items]        
Revenue $ 855 $ 890 $ 2,623 $ 2,784