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Program Development Costs (Details) (USD $) In Millions, unless otherwise specified | 6 Months Ended |
--- | --- | ---
Nov. 30, 2012 | May 31, 2012
Program Development Costs |  |
Minimum expected revenue from the cargo loading system program | $ 300 |
Net costs capitalized associated with the engineering and development of the cargo system. | $ 105.5 | $ 91.9

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- Definition Represents costs associated with the engineering and development of the cargo system. + References No definition available. + Details
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Namespace Prefix: | air_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition The minimum revenue expected to be generated by the cargo handling system program. + References No definition available. + Details
Name: | air_MinimumCargoHandlingSystemProgramRevenue
Namespace Prefix: | air_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
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Period Type: | duration