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Description of Business and Summary of Significant Accounting Policies (Details 2) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
May 31, 2016 | May 31, 2015
Property And Equipment [Line Items] |  |
Net property and equipment | $ 24,284 | $ 20,875
Wide Body Aircraft And Related Equipment [Member] |  |
Property And Equipment [Line Items] |  |
Depreciable lives range | 15 to 30 years |
Net property and equipment | $ 8,356 | 7,548
Narrow Body And Feeder Aircraft And Related Equipment [Member] |  |
Property And Equipment [Line Items] |  |
Depreciable lives range | 5 to 18 years |
Net property and equipment | $ 3,180 | 2,943
Package Handling And Ground Support Equipment [Member] |  |
Property And Equipment [Line Items] |  |
Depreciable lives range | 3 to 30 years |
Net property and equipment | $ 3,249 | 2,410
Vehicles [Member] |  |
Property And Equipment [Line Items] |  |
Depreciable lives range | 3 to 15 years |
Net property and equipment | $ 3,084 | 2,717
Computer And Electronic Equipment [Member] |  |
Property And Equipment [Line Items] |  |
Depreciable lives range | 2 to 10 years |
Net property and equipment | $ 1,051 | 866
Facilities And Other Property [Member] |  |
Property And Equipment [Line Items] |  |
Depreciable lives range | 2 to 40 years |
Net property and equipment | $ 5,364 | $ 4,391

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- Definition Describes the periods of time over which an entity anticipates to receive utility from its property, plant and equipment (that is, the periods of time over which an entity allocates the initial cost of its property, plant and equipment). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=51655414&loc=d3e18780-107790 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 35 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=51661791&loc=d3e1205-110223 + Details
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- Definition Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. + References Reference 1: 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 Reference 2: 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 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 13 -Subparagraph a -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 8 -Article 7 + Details
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