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Debt (AerFunding Revolving Credit Facility, AerTurbine Revolving Credit Agreement and Other Secured Debt Narrative) (Details) | 1 Months Ended | 12 Months Ended |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Dec. 31, 2014 USD ($) | Dec. 31, 2016 USD ($) item | Feb. 28, 2017 USD ($) | Aug. 31, 2016 USD ($) | May 31, 2016 USD ($) | Dec. 31, 2015 USD ($) | Nov. 30, 2014 USD ($) | Apr. 30, 2006 USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Long-term Debt |  |  | $ 27,716,999,000 |  |  |  | $ 29,641,863,000 |  |
Collateral (Number of aircraft) | item |  |  | 540 |  |  |  |  |  |
AerFunding Revolving Credit Facility [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Credit facility, current borrowing capacity |  | $ 2,160,000,000 |  |  |  |  |  |  | $ 1,000,000,000
Debt Instrument, Collateral Amount |  |  | $ 767,100,000,000 |  |  |  |  |  |
Debt Instrument, Maturity Date |  | Dec. 09, 2019 |  |  |  |  |  |  |
Required cash reserve as a percentage of outstanding borrowings |  |  | 5.00% |  |  |  |  |  |
AeroTurbine Revolving Credit Agreement [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Credit facility, current borrowing capacity |  |  |  |  | $ 200,000,000 | $ 400,000,000 |  | $ 550,000,000 |
Spread over reference rate |  |  | 2.50% |  |  |  |  |  |
SkyFunding I Facility Floating Rate Tranche [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Collateral (Number of aircraft) | item | [1] |  | 6 |  |  |  |  |  |
Floating rate tranches |  |  | $ 126,716,000 |  |  |  |  |  |
Spread over reference rate |  |  | 2.85% |  |  |  |  |  |
SkyFunding I Facility Fixed Rate Tranche [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Collateral (Number of aircraft) | item | [1] |  | 6 |  |  |  |  |  |
Fixed rate tranches |  |  | $ 125,634,000 |  |  |  |  |  |
Stated interest rate |  |  | 4.43% |  |  |  |  |  |
SkyFunding II Facility Floating Rate Tranche [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Collateral (Number of aircraft) | item | [1] |  | 6 |  |  |  |  |  |
Floating rate tranches |  |  | $ 141,179,000 |  |  |  |  |  |
Spread over reference rate |  |  | 3.15% |  |  |  |  |  |
SkyFunding II Facility Fixed Rate Tranche [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Collateral (Number of aircraft) | item | [1] |  | 3 |  |  |  |  |  |
Fixed rate tranches |  |  | $ 66,699,000 |  |  |  |  |  |
Stated interest rate |  |  | 4.43% |  |  |  |  |  |
Camden Facility [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Collateral (Number of aircraft) | item | [1] |  | 7 |  |  |  |  |  |
Fixed rate tranches |  |  | $ 164,162,000 |  |  |  |  |  |
Stated interest rate |  |  | 3.90% |  |  |  |  |  |
Debt, Maturity |  |  | 2022 |  |  |  |  |  |
AerCap Partners I Facility [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Collateral (Number of aircraft) | item | [1] |  | 8 |  |  |  |  |  |
Floating rate tranches |  |  | $ 81,537,000 |  |  |  |  |  |
Spread over reference rate |  |  | 1.65% |  |  |  |  |  |
Debt, Maturity |  |  | 2018 |  |  |  |  |  |
StratusFunding Facility Floating Rate Tranche [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Collateral (Number of aircraft) | item | [1] |  | 2 |  |  |  |  |  |
Floating rate tranches |  |  | $ 155,236,000 |  |  |  |  |  |
Spread over reference rate |  |  | 1.95% |  |  |  |  |  |
Debt, Maturity |  |  | 2026 |  |  |  |  |  |
StratusFunding Facility Fixed Rate Tranche [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Collateral (Number of aircraft) | item | [1] |  | 2 |  |  |  |  |  |
Fixed rate tranches |  |  | $ 154,901,000 |  |  |  |  |  |
Stated interest rate |  |  | 3.93% |  |  |  |  |  |
CieloFunding Facility Floating Rate Tranche [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Collateral (Number of aircraft) | item | [1] |  | 1 |  |  |  |  |  |
Floating rate tranches |  |  | $ 42,350,000 |  |  |  |  |  |
Stated interest rate |  |  | 2.60% |  |  |  |  |  |
Debt, Maturity |  |  | 2020 |  |  |  |  |  |
CieloFunding Facility Fixed Rate Tranche [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Collateral (Number of aircraft) | item | [1] |  | 2 |  |  |  |  |  |
Fixed rate tranches |  |  | $ 67,407,000 |  |  |  |  |  |
Stated interest rate |  |  | 3.68% |  |  |  |  |  |
Debt, Maturity |  |  | 2020 |  |  |  |  |  |
CieloFunding II Facility Floating Rate Tranche [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Collateral (Number of aircraft) | item | [1] |  | 1 |  |  |  |  |  |
Floating rate tranches |  |  | $ 30,095,000 |  |  |  |  |  |
Stated interest rate |  |  | 2.10% |  |  |  |  |  |
Debt, Maturity |  |  | 2020 |  |  |  |  |  |
CieloFunding II Facility Fixed Rate Tranche [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Collateral (Number of aircraft) | item | [1] |  | 1 |  |  |  |  |  |
Fixed rate tranches |  |  | $ 31,888,000 |  |  |  |  |  |
Stated interest rate |  |  | 3.14% |  |  |  |  |  |
Debt, Maturity |  |  | 2020 |  |  |  |  |  |
CloudFunding Facilities [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Collateral (Number of aircraft) | item | [1] |  | 15 |  |  |  |  |  |
Fixed rate tranches |  |  | $ 231,247,000 |  |  |  |  |  |
Stated interest rate |  |  | 3.98% |  |  |  |  |  |
LimelightFunding Facility [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Collateral (Number of aircraft) | item | [1] |  | 2 |  |  |  |  |  |
Fixed rate tranches |  |  | $ 157,479,000 |  |  |  |  |  |
Stated interest rate |  |  | 4.70% |  |  |  |  |  |
Debt, Maturity |  |  | 2026 |  |  |  |  |  |
Secured Commercial Bank Financings Floating Rate Tranche [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Collateral (Number of aircraft) | item | [1] |  | 34 |  |  |  |  |  |
Floating rate tranches |  |  | $ 844,111,000 |  |  |  |  |  |
Stated interest rate |  |  | 2.19% |  |  |  |  |  |
Number of engines | item |  |  | 3 |  |  |  |  |  |
Secured Commercial Bank Financings Fixed Rate Tranche [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Collateral (Number of aircraft) | item | [1] |  | 12 |  |  |  |  |  |
Fixed rate tranches |  |  | $ 249,684,000 |  |  |  |  |  |
Stated interest rate |  |  | 3.36% |  |  |  |  |  |
Other Secured Debt [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Credit facility amount outstanding |  |  | $ 2,670,325,000 |  |  |  |  |  |
Collateral (Number of aircraft) | item | [1] |  | 108 |  |  |  |  |  |
Minimum [Member] | AerFunding Revolving Credit Facility [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Aircraft purchases, maximum percentage financed |  |  | 73.50% |  |  |  |  |  |
Unused loan commitment fee, percentage |  |  | 0.375% |  |  |  |  |  |
Minimum [Member] | SkyFunding I Facility Floating Rate Tranche [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt, Maturity |  |  | 2021 |  |  |  |  |  |
Minimum [Member] | SkyFunding I Facility Fixed Rate Tranche [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt, Maturity |  |  | 2021 |  |  |  |  |  |
Minimum [Member] | SkyFunding II Facility Floating Rate Tranche [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt, Maturity |  |  | 2022 |  |  |  |  |  |
Minimum [Member] | SkyFunding II Facility Fixed Rate Tranche [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt, Maturity |  |  | 2022 |  |  |  |  |  |
Minimum [Member] | StratusFunding Facility Fixed Rate Tranche [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt, Maturity |  |  | 2021 |  |  |  |  |  |
Minimum [Member] | CloudFunding Facilities [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt, Maturity |  |  | 2022 |  |  |  |  |  |
Minimum [Member] | Secured Commercial Bank Financings Floating Rate Tranche [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt, Maturity |  |  | 2017 |  |  |  |  |  |
Minimum [Member] | Secured Commercial Bank Financings Fixed Rate Tranche [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt, Maturity |  |  | 2017 |  |  |  |  |  |
Maximum [Member] | AerFunding Revolving Credit Facility [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Aircraft purchases, maximum percentage financed |  |  | 80.00% |  |  |  |  |  |
Unused loan commitment fee, percentage |  |  | 0.50% |  |  |  |  |  |
Maximum [Member] | SkyFunding I Facility Floating Rate Tranche [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt, Maturity |  |  | 2022 |  |  |  |  |  |
Maximum [Member] | SkyFunding I Facility Fixed Rate Tranche [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt, Maturity |  |  | 2022 |  |  |  |  |  |
Maximum [Member] | SkyFunding II Facility Floating Rate Tranche [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt, Maturity |  |  | 2023 |  |  |  |  |  |
Maximum [Member] | SkyFunding II Facility Fixed Rate Tranche [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt, Maturity |  |  | 2023 |  |  |  |  |  |
Maximum [Member] | StratusFunding Facility Fixed Rate Tranche [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt, Maturity |  |  | 2026 |  |  |  |  |  |
Maximum [Member] | CloudFunding Facilities [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt, Maturity |  |  | 2026 |  |  |  |  |  |
Maximum [Member] | Secured Commercial Bank Financings Floating Rate Tranche [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt, Maturity |  |  | 2026 |  |  |  |  |  |
Maximum [Member] | Secured Commercial Bank Financings Fixed Rate Tranche [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt, Maturity |  |  | 2034 |  |  |  |  |  |
Charitable Trust [Member] | AerFunding Revolving Credit Facility [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Ownership percentage |  |  | 95.00% |  |  |  |  |  |
AerCap Ireland [Member] | AerFunding Revolving Credit Facility [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Ownership percentage |  |  | 5.00% |  |  |  |  |  |
Revolving Period [Member] | AerFunding Revolving Credit Facility [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Credit facility, term |  | 3 years |  |  |  |  |  |  |
Term Loan [Member] | AerFunding Revolving Credit Facility [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Credit facility, term |  | 2 years |  |  |  |  |  |  |
Borrowing Period [Member] | AerFunding Revolving Credit Facility [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Spread over reference rate | [2] |  | 2.25% |  |  |  |  |  |
Debt Instrument, Maturity Date |  |  | Dec. 09, 2017 |  |  |  |  |  |
Period from December 10, 2017 to December 9, 2018 [Member] | AerFunding Revolving Credit Facility [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Spread over reference rate |  |  | 3.25% |  |  |  |  |  |
Period from December 10, 2018 to December 9, 2019 [Member] | AerFunding Revolving Credit Facility [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Spread over reference rate |  |  | 3.75% |  |  |  |  |  |
Secured Debt [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Long-term Debt |  |  | $ 11,518,140,000 |  |  |  | 12,623,288,000 |  |
Secured Debt [Member] | AerFunding Revolving Credit Facility [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Long-term Debt |  |  | $ 596,819,000 |  |  |  | 1,058,294,000 |  |
Collateral (Number of aircraft) | item |  |  | 15 |  |  |  |  |  |
Debt, Maturity |  |  | 2019 |  |  |  |  |  |
Secured Debt [Member] | AeroTurbine Revolving Credit Agreement [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Long-term Debt | [3] |  | $ 125,000,000 |  |  |  | $ 321,603,000 |  |
Debt, Maturity | [3] |  | 2019 |  |  |  |  |  |
Subsequent Event [Member] | AeroTurbine Revolving Credit Agreement [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Credit facility, current borrowing capacity |  |  |  | $ 0 |  |  |  |  |
[1] | Three engines are pledged as collateral in addition to the aircraft.
[2] | The borrowing period is until December 9, 2017, after which the loan converts to a term loan.
[3] | AeroTurbine's assets served as collateral for the AeroTurbine revolving credit agreement.

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- Definition Aircraft purchases, maximum percentage financed + References No definition available. + Details
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- Definition Debt Instrument, Covenant, Cash Reserve as a Percentage of Outstanding Borrowings + References No definition available. + Details
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- Definition Debt instrument maturity period + References No definition available. + Details
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- Definition Number of aircraft that have been pledged as collateral for borrowings as of the balance sheet date. + References No definition available. + Details
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- Definition Number of engines + References No definition available. + Details
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- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
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- Definition Amount of assets pledged to secure a debt instrument. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 3 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823 + Details
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(2)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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- Definition Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility. + References No definition available. + Details
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