v3.26.1
LONG-TERM DEBT AND OTHER FINANCING ARRANGEMENTS - Additional Information (Details)
 1 Months Ended 12 Months Ended
May 27, 2026
USD ($)
Apr. 01, 2026
USD ($)
Jan. 15, 2026
USD ($)
Aug. 31, 2025
EUR (€)
May 31, 2026
USD ($)
qtr
aircraft
May 28, 2026
EUR (€)
Feb. 05, 2026
USD ($)
May 31, 2025
USD ($)
Debt Instrument [Line Items]                
Long-term debt weighted-average interest rate         3.80%      
Long term debt, including current maturities and exclusive of finance leases fair value         $ 20,900,000,000     $ 17,200,000,000
Debt outstanding         23,455,000,000      
Commercial paper         $ 750,000,000      
Financial covenant terms ratio         4.0      
Line of credit facility, financial covenant, minimum cash consideration for acquisition         $ 250,000,000      
Quarters to increase debt to adjusted EBITDA ratio | qtr         3      
Consecutive quarters with no election to increase debt to EBITA ratio | qtr         2      
Financial covenant compliance ratio         3.5      
Number of Boeing aircraft | aircraft         19      
Net book value of boeing aircraft         $ 1,500,000,000      
Commercial Paper                
Debt Instrument [Line Items]                
Debt instrument, face amount         $ 3,500,000,000      
Weighted average interest rate         4.19%      
Line of credit facility remaining borrowing capacity         $ 2,800,000,000      
Senior Unsecured Debt                
Debt Instrument [Line Items]                
Debt outstanding         22,776,000,000     $ 19,170,000,000
1.875% due in February 2034                
Debt Instrument [Line Items]                
Debt instrument, face amount         $ 970,000,000      
Fixed interest rate         1.875%      
New Three-Year Credit Agreement                
Debt Instrument [Line Items]                
Line of credit facility maximum borrowing capacity         $ 1,750,000,000      
Letter of credit maximum sublimit amount         125,000,000      
New Five-Year Credit Agreement                
Debt Instrument [Line Items]                
Line of credit facility maximum borrowing capacity         1,750,000,000      
Letter of credit maximum sublimit amount         $ 125,000,000      
Financial covenant terms ratio         3.5      
Credit Agreements                
Debt Instrument [Line Items]                
Line of credit facility, financial covenant, maximum percentage of adjusted EBITDA         10.00%      
Financial covenant compliance ratio         1.8      
Unsecured Debt | One Point Three Zero Percent Senior Unsecured Debt Due Twenty Thirty One                
Debt Instrument [Line Items]                
Debt instrument, face amount | €           € 354,900,000    
Debt instrument, stated percentage           1.30%    
Unsecured Debt | Senior Unsecured Debt                
Debt Instrument [Line Items]                
Debt instrument, face amount       € 850,000,000     $ 3,700,000,000  
Debt outstanding         $ 0      
Unsecured Debt | Three Point Five Zero Percent Senior Unsecured Debt Due Twenty Thirty Two                
Debt Instrument [Line Items]                
Debt instrument, face amount | €       € 500,000,000        
Debt instrument, stated percentage       3.50%        
Unsecured Debt | 0.450% Notes due 2029                
Debt Instrument [Line Items]                
Debt instrument, stated percentage       0.45%        
Repayments of long term debt | €       € 500,000,000        
Unsecured Debt | Three Point Two Five Percent Senior Unsecured Debt Due Twenty Twenty Six                
Debt Instrument [Line Items]                
Debt instrument, stated percentage   3.25%            
Repayments of long term debt   $ 750,000,000            
Unsecured Debt | Four Point Three Percent, Senior Unsecured Debt Due Twenty Twenty Nine                
Debt Instrument [Line Items]                
Debt instrument, face amount       € 350,000,000     $ 1,000,000,000.0  
Debt instrument, stated percentage       4.13%     4.30%  
Unsecured Debt | Four Point Six Five Percent, Senior Unsecured Debt Due Twenty Thirty One                
Debt Instrument [Line Items]                
Debt instrument, face amount             $ 1,000,000,000.0  
Debt instrument, stated percentage             4.65%  
Unsecured Debt | Four Point Nine Five Percent, Senior Unsecured Debt Due Twenty Thirty Three                
Debt Instrument [Line Items]                
Debt instrument, face amount             $ 700,000,000  
Debt instrument, stated percentage             4.95%  
Unsecured Debt | Five Point Two Five Percent, Senior Unsecured Debt Due Twenty Thirty Six                
Debt Instrument [Line Items]                
Debt instrument, face amount             $ 1,000,000,000.0  
Debt instrument, stated percentage             5.25%  
Line of Credit | Revolving Credit Facility | FedEx Freight Revolving Credit Facility                
Debt Instrument [Line Items]                
Line of credit facility maximum borrowing capacity     $ 1,200,000,000          
Line of credit facility, term     5 years          
Line of Credit | Term Loan Facility | FedEx Freight Term Loan Facility                
Debt Instrument [Line Items]                
Line of credit facility maximum borrowing capacity     $ 600,000,000          
Line of credit facility, term     3 years          
Proceeds from credit facility $ 600,000,000