v3.26.1
BUSINESS SEGMENTS AND DISAGGREGATED REVENUE - Schedule of Geographical Information (Details) - USD ($)
$ in Millions
 12 Months Ended
May 31, 2026
May 31, 2025
May 31, 2024
Revenues From External Customers And Long Lived Assets [Line Items]      
Revenue $ 94,720 $ 87,926 $ 87,693
Noncurrent assets: 71,034 69,241 68,800
U.S.      
Revenues From External Customers And Long Lived Assets [Line Items]      
Revenue 67,944 62,916 63,531
Noncurrent assets: 58,134 57,040 56,822
International:      
Revenues From External Customers And Long Lived Assets [Line Items]      
Revenue 26,776 25,010 24,162
Noncurrent assets: 12,900 12,201 11,978
Federal Express segment | International:      
Revenues From External Customers And Long Lived Assets [Line Items]      
Revenue 25,480 23,720 23,136
FedEx Freight
Segment | International:      
Revenues From External Customers And Long Lived Assets [Line Items]      
Revenue 243 247 266
Other | International:      
Revenues From External Customers And Long Lived Assets [Line Items]      
Revenue $ 1,053 $ 1,043 $ 760