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Variable Interest Entities (Narrative) (Details) |  | 1 Months Ended | 3 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Jun. 01, 2011 | Jun. 30, 2013 item | Mar. 31, 2016 item | Dec. 31, 2016 USD ($) item | Dec. 31, 2014 | Dec. 31, 2010 item | Dec. 23, 2016 USD ($) | Dec. 31, 2015 USD ($) | Oct. 15, 2015 USD ($)
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |
Number of aircraft owned | item |  |  |  |  | 1,022 |  |  |  |  |
Remaining borrowing capacity |  |  |  |  | $ 7,338,181,000 |  |  |  |  |
Debt guarantees |  |  |  |  | 125,429,000 |  |  |  | $ 248,105,000 |
Number of aircraft sold | item |  |  |  | 5 |  |  |  |  |  |
Gain on refinance of notes receivable |  |  |  |  | 27,700,000 |  |  |  |  |
Carrying value of the ALS Notes Receivable |  |  |  |  |  |  |  |  | 85,747,000 |
Long-term Debt |  |  |  |  | 27,716,999,000 |  |  |  | 29,641,863,000 |
AerCap Partners I [Member] |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |
Subordinated debt |  |  |  |  | 63,800,000 |  |  |  |  |
Aercap Partners 767 [Member] |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |
Senior debt facility |  |  |  |  | 16,200,000 |  |  |  |  |
Subordinated debt |  |  |  |  | 31,000,000 |  |  |  |  |
AerFunding [Member] |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |
Credit facility amount outstanding |  |  |  |  | 596,800,000 |  |  |  |  |
AerCap Partners II [Member] |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |
Senior debt facility |  |  |  |  | 49,000,000 |  |  |  |  |
Subordinated debt |  |  |  |  | $ 16,800,000 |  |  |  |  |
AerLift Jet [Member] |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |
Number of aircraft owned | item |  |  |  |  | 0 |  |  |  |  |
Number of aircraft sold | item |  |  |  |  | 4 |  |  |  |  |
AerDragon [Member] |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |
Debt guarantees |  |  |  |  | $ 3,400,000 |  |  |  | 7,500,000 |
Number of airlines | item |  |  |  |  | 10 |  |  |  |  |
AerLift [Member] |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |
Number of aircraft owned | item |  |  |  |  | 4 |  |  |  |  |
Debt guarantees |  |  |  |  | $ 122,000,000 |  |  |  | 168,900,000 |
Number of aircraft sold | item |  |  |  |  | 2 |  |  |  |  |
AerCap Partners III [Member] |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |
Debt guarantees |  |  |  |  |  |  |  |  | 71,700,000 |
Other Joint Ventures [Member] |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |
Ownership percentage sold |  | 50.00% |  |  |  |  |  |  |  |
AerCap Holdings N.V. [Member] | AerCap Partners I [Member] |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |
Ownership percentage |  |  |  |  | 50.00% |  |  |  |  |
Subordinated debt |  |  |  |  | $ 31,900,000 |  |  |  |  |
AerCap Holdings N.V. [Member] | Aercap Partners 767 [Member] |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |
Ownership percentage |  |  |  |  | 50.00% |  |  |  |  |
Subordinated debt |  |  |  |  | $ 15,500,000 |  |  |  |  |
AerCap Holdings N.V. [Member] | AerFunding [Member] |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |
Ownership percentage |  |  |  |  | 5.00% |  |  |  |  |
Percent of the subordinated fixed rate deferrable interest asset-backed notes |  |  |  |  | 100.00% |  |  |  |  |
Subordinated debt |  |  |  |  | $ 192,700,000 |  |  |  |  |
AerCap Holdings N.V. [Member] | AerCap Partners II [Member] |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |
Ownership percentage |  |  |  |  | 50.00% |  |  |  |  |
Subordinated debt |  |  |  |  | $ 8,400,000 |  |  |  |  |
AerCap Holdings N.V. [Member] | AerLift Jet [Member] |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |
Ownership percentage |  |  |  |  | 50.00% |  |  |  |  |
AerCap Holdings N.V. [Member] | AerLift [Member] |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |
Ownership percentage |  |  |  |  | 39.00% |  |  |  |  |
AerCap Holdings N.V. [Member] | AerCap Partners III [Member] |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |
Ownership percentage |  |  |  |  |  |  | 50.00% |  |  |
Ownership percentage sold |  | 50.00% |  |  |  |  |  |  |  |
AerCap Holdings N.V. [Member] | AerCo [Member] |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |
Notes receivable |  |  |  |  |  |  |  |  |  | $ 0
Deucalion Aviation Funds [Member] | AerCap Partners I [Member] |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |
Ownership percentage |  |  |  |  | 50.00% |  |  |  |  |
Subordinated debt |  |  |  |  | $ 31,900,000 |  |  |  |  |
Deucalion Aviation Funds [Member] | Aercap Partners 767 [Member] |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |
Ownership percentage |  |  |  |  | 50.00% |  |  |  |  |
Subordinated debt |  |  |  |  | $ 15,500,000 |  |  |  |  |
Deucalion Aviation Funds [Member] | AerCap Partners II [Member] |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |
Ownership percentage |  |  |  |  | 50.00% |  |  |  |  |
Subordinated debt |  |  |  |  | $ 8,400,000 |  |  |  |  |
U.S.-based Aircraft Leasing Company [Member] | AerLift Jet [Member] |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |
Ownership percentage |  |  |  |  | 50.00% |  |  |  |  |
China Aviation Supplies Holding Company [Member] | AerDragon [Member] |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |
Ownership percentage |  |  |  |  | 50.00% |  |  |  |  |
Equal Ownership By AerCap Holdings N.V., CA-CIB And East Epoch Limited [Member] | AerDragon [Member] |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |
Ownership percentage |  |  |  |  | 50.00% |  |  |  |  |
A330 Aircraft [Member] | AerFunding [Member] |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |
Number of aircraft owned | item |  |  |  |  | 5 |  |  |  |  |
A330 Aircraft [Member] | AerCap Partners III [Member] |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |
Number of aircraft owned | item |  |  |  |  |  |  | 3 |  |  |
A320-200 Aircraft [Member] | AerFunding [Member] |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |
Number of aircraft owned | item |  |  |  |  | 5 |  |  |  |  |
A320-200 Aircraft [Member] | AerCap Partners II [Member] |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |
Number of aircraft owned | item |  |  |  |  | 3 |  |  |  |  |
Boeing 737-800 Aircraft [Member] | AerCap Partners I [Member] |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |
Number of aircraft owned | item |  |  |  |  | 8 |  |  |  |  |
Boeing 737-800 Aircraft [Member] | AerFunding [Member] |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |
Number of aircraft owned | item |  |  |  |  | 7 |  |  |  |  |
Boeing 767 Aircraft [Member] | Aercap Partners 767 [Member] |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |
Number of aircraft owned | item |  |  |  |  | 2 |  |  |  |  |
Boeing 787 Aircraft [Member] | AerFunding [Member] |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |
Number of aircraft owned | item |  |  |  |  | 2 |  |  |  |  |
Narrowbody Aircraft [Member] | AerDragon [Member] |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |
Number of aircraft owned | item |  |  |  |  | 29 |  |  |  |  |
Widebody Aircraft [Member] | AerDragon [Member] |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |
Number of aircraft sold | item |  |  |  |  | 1 |  |  |  |  |
B-737-NG Aircraft [Member] | AerCap Partners I [Member] |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |
Number of aircraft sold | item |  |  |  |  | 3 |  |  |  |  |
ALS II [Member] |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |
Senior debt facility |  |  |  |  | $ 17,700,000 |  |  |  |  |
ALS II [Member] | AerCap Holdings N.V. [Member] |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |
Ownership percentage |  |  |  |  | 5.00% |  |  |  |  |
Percent of the subordinated fixed rate deferrable interest asset-backed notes |  |  |  |  | 100.00% |  |  |  |  |
Subordinated debt |  |  |  |  | $ 350,000,000 |  |  |  |  |
ALS II [Member] | A-320 Aircraft [Member] |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |
Number of aircraft sold | item |  |  |  |  | 4 |  |  |  |  |
ALS II [Member] | A320-200 Aircraft [Member] |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |
Number of aircraft owned | item |  |  |  |  | 26 |  |  |  |  |
AerData [Member] | AerCap Holdings N.V. [Member] |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |
Ownership percentage sold |  |  |  |  |  | 42.30% |  |  |  |
ACSAL [Member] |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |
Number of aircraft owned | item |  |  |  |  | 8 |  |  |  |  |
Ownership percentage | [1] |  |  |  | 19.00% |  |  |  |  |
ACSAL [Member] | AerCap Holdings N.V. [Member] |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |
Ownership percentage |  |  | 19.00% |  |  |  |  |  |  |
ACSAL [Member] | Boeing 737-800 Aircraft [Member] | AerCap Holdings N.V. [Member] |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |
Number of aircraft sold | item |  |  | 8 |  |  |  |  |  |  |
ALS [Member] |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |
Long-term Debt |  |  |  |  |  |  |  |  | 28,000,000 |
ALS [Member] | AerCap Holdings N.V. [Member] |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |
Annual coupon percentage of purchase price |  |  |  |  | 8.00% |  |  |  |  |
ALS Refinancing [Member] |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |
Gain related to the repayment of a note receivable |  |  |  |  | $ 120,300,000 |  |  |  |  |
Percentage of cash flows |  |  |  |  | 20.00% |  |  |  |  |
Notes receivable |  |  |  |  |  |  |  | $ 92,600,000 |  |
Gain on refinance of notes receivable |  |  |  |  | $ 27,700,000 |  |  |  |  |
AerCap Partners I Facility [Member] |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |
Outstanding amount under senior debt facility |  |  |  |  | $ 81,537,000 |  |  |  |  |
AerFunding Revolving Credit Facility [Member] | Charitable Trust [Member] |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |
Ownership percentage |  |  |  |  | 95.00% |  |  |  |  |
Purchase Obligations [Member] |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |
Number of aircraft owned | item |  |  |  |  | 420 |  |  |  |  |
Secured Debt [Member] |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |
Remaining borrowing capacity |  |  |  |  | $ 3,238,181,000 |  |  |  |  |
Long-term Debt |  |  |  |  | 11,518,140,000 |  |  |  | 12,623,288,000 |
Secured Debt [Member] | AerFunding Revolving Credit Facility [Member] |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |
Remaining borrowing capacity |  |  |  |  | 1,563,181,000 |  |  |  |  |
Long-term Debt |  |  |  |  | 596,819,000 |  |  |  | 1,058,294,000 |
Unsecured Debt [Member] |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |
Remaining borrowing capacity |  |  |  |  | 4,100,000,000 |  |  |  |  |
Long-term Debt |  |  |  |  | $ 14,800,212,000 |  |  |  | 15,619,510,000 |
Unsecured Debt [Member] | Other Unsecured Debt [Member] |  |  |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |  |  |
Long-term Debt |  |  |  |  |  |  |  |  | $ 27,959,000 |
[1] | AerDragon and ACSAL are VIEs for which we are not the PB but do have significant influence. Therefore, they are accounted for under the equity method.

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- Definition Annual Coupon Percentage Of Purchase Price + References No definition available. + Details
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- Definition Gain (Loss) on Refinance of Notes Receivable + References No definition available. + Details
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- Definition Number of aircraft + References No definition available. + Details
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- Definition Percent Of Subordinated Notes Held In Variable Interest Entity + References No definition available. + Details
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- Definition Percentage Of Cash Flows + References No definition available. + Details
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- Definition Variable interest entity, entity maximum loss exposure, debt guaranteed, amount + References No definition available. + Details
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- Definition Variable Interest Entity Entity Maximum Loss Exposure Notes Receivable + References No definition available. + Details
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- Definition Variable Interest Entity, Ownership Percentage Sold + References No definition available. + Details
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- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66011266&loc=d3e33918-111571 + 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 borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding). + 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 Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: 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(a)(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 2: 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 Reference 3: 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 + Details
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- Definition The portion of the carrying amount of long-term borrowings outstanding as of the balance sheet date, including current maturities, which accrues interest at a rate subject to change from time to time. + References No definition available. + Details
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