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BUSINESS SEGMENTS AND DISAGGREGATED REVENUE - Schedule of Segment Information (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Nov. 30, 2025 | Nov. 30, 2024 | Nov. 30, 2025 | Nov. 30, 2024 | May 31, 2025
Segment Reporting Information [Line Items] |  |  |  |  |
Revenue | $ 23,469 | $ 21,967 | $ 45,713 | $ 43,546 |
Salaries and employee benefits | 8,395 | 7,879 | 16,457 | 15,664 |
Purchased transportation | 5,885 | 5,500 | 11,373 | 10,775 |
Rentals and landing fees | 1,211 | 1,168 | 2,403 | 2,329 |
Depreciation and amortization | 1,068 | 1,063 | 2,160 | 2,141 |
Fuel | 889 | 947 | 1,762 | 2,022 |
Maintenance and repairs | 889 | 831 | 1,732 | 1,660 |
Separation and other costs | 213 | 0 | 258 | 0 |
Business optimization costs | 30 | 326 | 97 | 454 |
Other | 3,511 | 3,201 | 6,907 | 6,369 |
Total operating expenses | 22,091 | 20,915 | 43,149 | 41,414 |
Other operating income (loss) | 1,378 | 1,052 | 2,564 | 2,132 |
Interest, net | (135) | (102) | (254) | (186) |
Other retirement plans, net | 59 | 50 | 119 | 99 |
Other, net | (13) | (19) | (6) | (8) |
Total other (expense) income | (89) | (71) | (141) | (95) |
INCOME BEFORE INCOME TAXES | 1,289 | 981 | 2,423 | 2,037 |
FedEx Freight spin-off costs | 205 |  | 248 |  |
Segment assets | 89,181 |  | 89,181 |  | $ 87,627
Capital expenditures |  |  | 1,380 | 1,585 |
Other, net |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
FedEx Freight spin-off costs |  |  | 2 |  |
Operating Segments | Total Federal Express and FedEx Freight revenue |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenue | 22,572 | 21,018 | 43,945 | 41,652 |
Other operating income (loss) | 1,641 | 1,364 | 3,139 | 2,756 |
Operating Segments | Federal Express segment |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenue | 20,433 | 18,841 | 39,549 | 37,146 |
Salaries and employee benefits | 6,824 | 6,329 | 13,340 | 12,530 |
Purchased transportation | 5,480 | 5,067 | 10,553 | 9,868 |
Rentals and landing fees | 1,028 | 987 | 2,041 | 1,973 |
Depreciation and amortization | 931 | 918 | 1,885 | 1,853 |
Fuel | 779 | 835 | 1,539 | 1,789 |
Maintenance and repairs | 773 | 715 | 1,510 | 1,434 |
Separation and other costs | 18 | 0 | 23 | 0 |
Business optimization costs | 7 | 206 | 28 | 249 |
Intercompany allocations | (229) | (205) | (462) | (392) |
Other | 3,271 | 2,937 | 6,403 | 5,837 |
Total operating expenses | 18,882 | 17,789 | 36,860 | 35,141 |
Other operating income (loss) | 1,551 | 1,052 | 2,689 | 2,005 |
Segment assets | 75,048 |  | 75,048 |  | 74,154
Capital expenditures |  |  | 1,208 | 1,301 |
Operating Segments | FedEx Freight segment |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenue | 2,139 | 2,177 | 4,396 | 4,506 |
Salaries and employee benefits | 983 | 976 | 1,958 | 1,960 |
Purchased transportation | 197 | 197 | 398 | 400 |
Rentals and landing fees | 76 | 72 | 150 | 143 |
Depreciation and amortization | 113 | 112 | 223 | 222 |
Fuel | 110 | 111 | 223 | 232 |
Maintenance and repairs | 89 | 88 | 170 | 170 |
Separation and other costs | 152 | 0 | 161 | 0 |
Intercompany allocations | 153 | 143 | 315 | 291 |
Other | 176 | 166 | 348 | 337 |
Total operating expenses | 2,049 | 1,865 | 3,946 | 3,755 |
Other operating income (loss) | 90 | 312 | 450 | 751 |
Segment assets | 13,615 |  | 13,615 |  | 12,899
Capital expenditures |  |  | 132 | 230 |
Corporate, Other, and Eliminations |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenue | 897 | 949 | 1,768 | 1,894 |
Other operating income (loss) | (263) | $ (312) | (575) | (624) |
Segment assets | $ 518 |  | 518 |  | $ 574
Capital expenditures |  |  | $ 40 | $ 54 |

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