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Aircraft Portfolio (Details 2) (Aircraft) | Aug. 31, 2012 item | May 31, 2012 item
--- | --- | ---
Owned Through Joint Ventures |  |
Aircraft portfolio |  |
Owned aircraft, number | 18 | 18
Owned Through Joint Ventures | Aircraft Type 767-300 | United Airlines | Lease Expiration Date (FY) 2016 and 2017 |  |
Aircraft portfolio |  |
Owned aircraft, number | 2 |
Owned Through Joint Ventures | Aircraft Type 737-400 | Malaysia Airlines | Lease Expiration Date (FY) 2013 |  |
Aircraft portfolio |  |
Owned aircraft, number | 12 |
Owned Through Joint Ventures | Aircraft Type 737-400 | Malaysia Airlines | Lease Expiration Date (FY) Various |  |
Aircraft portfolio |  |
Owned aircraft, number | 16 |
Number of aircraft for which LOIs for sale have been entered | 13 |
Owned Through Joint Ventures | Aircraft Type 737-400 | Malaysia Airlines | Lease Expiration Date (FY) 2014 |  |
Aircraft portfolio |  |
Owned aircraft, number | 4 |
Owned Through Joint Ventures | Aircraft Type 737-400 | Year Manufactured (FY) 1992 | Malaysia Airlines |  |
Aircraft portfolio |  |
Owned aircraft, number | 5 |
Owned Through Joint Ventures | Aircraft Type 737-400 | Year Manufactured (FY) 1993 | Malaysia Airlines |  |
Aircraft portfolio |  |
Owned aircraft, number | 8 |
Owned Through Joint Ventures | Aircraft Type 737-400 | Year Manufactured (FY) 1994 | Malaysia Airlines |  |
Aircraft portfolio |  |
Owned aircraft, number | 2 |
Owned Through Joint Ventures | Aircraft Type 737-400 | Year Manufactured (FY) 1997 | Malaysia Airlines |  |
Aircraft portfolio |  |
Owned aircraft, number | 1 |
Wholly-Owned |  |
Aircraft portfolio |  |
Owned aircraft, number | 2 |
Wholly-Owned | Aircraft Type 737-300 | Small Planet Airlines | Lease Expiration Date (FY) 2015 |  |
Aircraft portfolio |  |
Owned aircraft, number | 1 |
Wholly-Owned | Aircraft Type A320 | Dombassaero Airlines | Lease Expiration Date (FY) 2017 |  |
Aircraft portfolio |  |
Owned aircraft, number | 1 |

X
- Definition Represents the number of aircraft for which LOIs for sale have been entered. + References No definition available. + Details
Name: | air_NumberOfAircraftForWhichLOIsForSaleHaveBeenEntered
Namespace Prefix: | air_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Represents the number of aircraft owned by the entity. + References No definition available. + Details
Name: | air_NumberOfAircraftOwned
Namespace Prefix: | air_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | air_ScheduleOfAircraftPortfolioLineItems
Namespace Prefix: | air_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration