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Description of Business and Summary of Significant Accounting Policies (Details 5) $ / shares in Units, $ in Millions | 12 Months Ended
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May 31, 2016 | May 31, 2015 USD ($) $ / shares
Impairment of Long Lived Assets [Abstract] |  |
Number of Idle Aircraft | 4 |
Number of months aircraft remained idle | less than 1 year |
Number of Impaired Boeing MD11 Aircraft |  | 7
Number of Impaired Boeing MD11 Aircraft Engines |  | 12
Number of Impaired Airbus A310-300 Aircraft |  | 4
Number of Impaired Airbus A310-300 Aircraft Engines |  | 3
Number of Impaired Airbus A300-600 Aircraft |  | 3
Number of Impaired Airbus A300-600 Aircraft Engines |  | 3
Number of Impaired Boeing MD10-10 Aircraft |  | 1
Number of Impaired Boeing MD10-10 Aircraft Engines |  | 3
Asset impairments |  | $ 276
Asset impairments, net of tax |  | $ 175
Asset impairments Diluted EPS impact | $ / shares |  | $ 0.61
Asset impairment non-cash |  | $ 246

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- Definition The amount of impact on diluted earnings per share (EPS) of write-downs for impairments recognized during the period for long-lived assets held for abandonment, exchange or sale. + References No definition available. + Details
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- Definition The aggregate amount of write-downs, net of tax, for impairments recognized during the period for long-lived assets held for abandonment, exchange or sale. + References No definition available. + Details
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- Definition The aggregate amount of write-downs for impairments recognized during the period for long-lived assets held for abandonment, exchange or sale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=51824106&loc=d3e2611-110228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585 + Details
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