v3.26.3
DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Additional Information (Details)
$ / shares in Units, $ in Millions, € in Billions
3 Months Ended 4 Months Ended 12 Months Ended
May 13, 2026
USD ($)
Sep. 30, 2026
USD ($)
Sep. 30, 2025
USD ($)
Sep. 30, 2026
USD ($)
segment
equity_award
Sep. 30, 2025
USD ($)
May 31, 2026
USD ($)
Sep. 30, 2026
EUR (€)
Aug. 21, 2026
$ / shares
Jul. 31, 2026
USD ($)
Jun. 29, 2026
Jun. 01, 2026
May 31, 2026
EUR (€)
Mar. 31, 2024
USD ($)
Organization Consolidation And Presentation Of Financial Statements [Line Items]                          
Outstanding shares percent 0.801                        
Spin-off increase to retained earnings $ 464.0                        
Number of reportable segments | segment       2                  
Contract assets net of deferred unearned revenue   $ 714.0   $ 714.0   $ 684.0              
Contract liabilities related to advance payments from customers   17.0   17.0   20.0              
Total submitted claims   4,600.0   4,600.0   3,300.0              
Received cash refunds       3,300.0   800.0              
IEEPA refund payable to customers   2,700.0   $ 2,700.0   749.0              
Initial pay rate increase                   40.00%      
Payment for collective bargaining agreement   625.0                      
Types of equity based compensation | equity_award       4                  
Stock-based compensation   $ 37.0 $ 41.0 $ 97.0 $ 70.0                
Effective tax rate   31.60% 29.40% 5.40% 28.60%                
Effective income tax rate reconciliation, change due to ownership interest   $ 1,200.0   $ 3,300.0                  
Deferred tax benefit   263.0                      
Denominated debt as a net investment hedge | €             € 2.2         € 0.5  
Reclassified out of AOCL   0.0 $ 0.0 0.0 $ 0.0                
Payments for repurchase of common stock [1]       2,000.0 776.0                
Cash dividend payable (in dollars per share) | $ / shares               $ 1.22          
FedEx Freight Holding                          
Organization Consolidation And Presentation Of Financial Statements [Line Items]                          
Retained ownership interest percentage, after spin-off                     19.90%    
2024 Stock Repurchase Program                          
Organization Consolidation And Presentation Of Financial Statements [Line Items]                          
Stock repurchase program amount authorized to be repurchased                         $ 5,000.0
Stock repurchase program amount authorized to be repurchased, remaining available amount   4,300.0   4,300.0                  
Payments for repurchase of common stock   200.0 600.0 1,300.0 800.0                
2026 Stock Repurchase Program                          
Organization Consolidation And Presentation Of Financial Statements [Line Items]                          
Stock repurchase program amount authorized to be repurchased                 $ 5,000.0        
Payments for repurchase of common stock   700.0   700.0                  
Supply Chain Finance                          
Organization Consolidation And Presentation Of Financial Statements [Line Items]                          
Outstanding payment obligations   92.0   92.0   $ 109.0              
Currency Swap                          
Organization Consolidation And Presentation Of Financial Statements [Line Items]                          
Gain (loss) in AOCL related to our cross-currency swaps   (2.0) (11.0) 23.0 (20.0)                
Recognized gain (loss)   $ 14.0 $ (9.0) $ 23.0 $ (20.0)                
[1] The statement of cash flows has not been recast to reflect discontinued operations for any periods presented. Supplemental disclosure of operating and investing cash flows from discontinued operations is included in Note 2.