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Commitments And Contingencies (Narrative) (Details) | 1 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Mar. 31, 2009 USD ($) | Dec. 31, 2016 USD ($) item contract | Dec. 31, 2015 USD ($) item | Dec. 31, 2014 USD ($) | Jul. 31, 2011 USD ($) | Jul. 31, 2006 item
Loss Contingencies [Line Items] |  |  |  |  |  |
Number of aircraft | item |  | 1,022 |  |  |  |
Number of asset value guarantees settled | item |  |  | 3 |  |  |
Guarantee carrying value |  | $ 51,804,000 | $ 47,380,000 |  |  |
Asset Value Guarantees [Member] |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Number of asset value guarantees outstanding | contract |  | 8 |  |  |  |
Asset guarantee loss provisions |  | $ 0 | 0 |  |  |
Guarantee carrying value |  | 37,500,000 | 37,500,000 |  |  |
Maximum aggregate potential commitment |  | 168,400,000 |  |  |  |
Other Guarantees [Member] |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Guarantee carrying value |  | 14,300,000 | $ 9,900,000 |  |  |
Maximum aggregate potential commitment |  | $ 34,200,000 |  |  |  |
Number of aircraft sold with a guarantee of the future lease cash flows | item |  | 4 |  |  |  |
Number of aircraft sold with a guarantee of the replacement lease rental cash flows | item |  | 3 |  |  |  |
VASP Litigation [Member] |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Number of leases that company incurred obligations due to another company's default | item |  | 9 |  |  |  | 7
Claim award for loss of profit plus accrued interest | $ 40,000,000 |  |  |  |  |
Damages awarded |  |  |  | $ 36,900,000 |  |
Transbrasil Litigation [Member] |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Aggregate amount due from AerCap |  |  |  |  | $ 210,000,000 |
Purchase Obligations [Member] |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Number of aircraft | item |  | 420 |  |  |  |
Boeing [Member] |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Non-refundable deposits |  | $ 636,200,000 |  |  |  |
Airbus [Member] |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Non-refundable deposits |  | 667,300,000 |  |  |  |
Embraer [Member] |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Non-refundable deposits |  | $ 7,500,000 |  |  |  |
Aircraft [Member] | VASP Litigation [Member] |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Number of capital leased assets | item |  | 13 |  |  |  |
Engines [Member] | VASP Litigation [Member] |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Number of capital leased assets | item |  | 3 |  |  |  |

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