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Asset Impairment (Narrative) (Details) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2015 USD ($) item | Dec. 31, 2014 USD ($) item | Dec. 31, 2013 USD ($) item
Asset Impairment [Line Items] |  |  |
Flight equipment held for operating leases (Note 6) | $ | $ 16,322 | $ 21,828 | $ 25,616
Number of aircraft impaired | 8 | 8 | 6
Number of engines impaired | 12 | 3 |
Maintenance rents and other receipts | $ | $ 20,500 |  |
Release to income upon redelivery | $ | $ (243,809) | $ (92,296) | $ 9,900
EOL payments received or retained | $ |  |  | $ 17,700
End Of Lease [Member] |  |  |
Asset Impairment [Line Items] |  |  |
Number of aircraft impaired | 4 |  | 4
Undiscounted Cash Flows Substantially Do Not Exceed Carrying Value [Member] |  |  |
Asset Impairment [Line Items] |  |  |
Number of aircraft impaired | 4 |  | 2
Number of engines impaired | 12 |  |

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- Definition Accrued Maintenance Liability, Release To Income Upon Redelivery Or Termination + References No definition available. + Details
Name: | aer_AccruedMaintenanceLiabilityReleaseToIncomeUponRedeliveryOrTermination
Namespace Prefix: | aer_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Asset impairment [Line Items] + References No definition available. + Details
Name: | aer_AssetImpairmentLineItems
Namespace Prefix: | aer_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition End Of Lease Contract Cash Receipt + References No definition available. + Details
Name: | aer_EndOfLeaseContractCashReceipt
Namespace Prefix: | aer_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Number Of Aircraft Impaired + References No definition available. + Details
Name: | aer_NumberOfAircraftImpaired
Namespace Prefix: | aer_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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- Definition Number of engines impaired + References No definition available. + Details
Name: | aer_NumberOfEnginesImpaired
Namespace Prefix: | aer_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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- Definition Revenue derived from maintenance services provided under contracts or arrangements with clients. For example, it may include the maintenance of software, plant and equipment, and facilities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1(d)) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition This element represents the loss resulting from the amount by which the cost or carrying amount, if different, of an asset subject to an agreement classified as an operating lease, at the inception of a lease involving real estate, exceeds the fair value of the leased property. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 25 -Paragraph 21 -URI http://asc.fasb.org/extlink&oid=6748888&loc=d3e40601-112709 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Details
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Namespace Prefix: |
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- Details
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