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Description of Business and Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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May 31, 2018
Accounting Policies [Abstract] |
Schedule of Depreciable Lives and Net Book Value of Property and Equipment | The depreciable lives and net book value of our property and equipment are as follows (dollars in millions):
|  |  |  | Net Book Value at May 31, |
|  | Range |  | 2018 |  |  | 2017 |
Wide-body aircraft and related equipment |  | 15 to 30 years |  | $ | 10,463 |  |  | $ | 9,103 |
Narrow-body and feeder aircraft and related equipment |  | 5 to 18 years |  |  | 2,908 |  |  |  | 3,099 |
Package handling and ground support equipment |  | 3 to 30 years |  |  | 4,028 |  |  |  | 3,862 |
Information technology |  | 2 to 10 years |  |  | 1,277 |  |  |  | 1,114 |
Vehicles |  | 3 to 15 years |  |  | 3,747 |  |  |  | 3,400 |
Facilities and other |  | 2 to 40 years |  |  | 5,731 |  |  |  | 5,403 |

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- Definition Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(13)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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