Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Debt (AerFunding Revolving Credit Facility, AerTurbine Revolving Credit Agreement and Other Secured Debt Narrative) (Details)

v3.3.1.900
Debt (AerFunding Revolving Credit Facility, AerTurbine Revolving Credit Agreement and Other Secured Debt Narrative) (Details)
12 Months Ended
Dec. 31, 2015
USD ($)
item
Dec. 31, 2014
USD ($)
Apr. 30, 2006
USD ($)
Debt Instrument [Line Items]      
Long-term Debt $ 29,806,843,000 $ 30,402,392,000  
Collateral (Number of aircraft) | item 617    
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 $ 1,400,000,000    
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 $ 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 6    
Floating rate tranches $ 143,758,000    
Spread over reference rate 2.85%    
Debt, Maturity 2021-2022    
SkyFunding I Facility Fixed Rate Tranche [Member]      
Debt Instrument [Line Items]      
Collateral (Number of aircraft) | item 6    
Fixed rate tranches $ 142,650,000    
Stated interest rate 4.43%    
Debt, Maturity 2021-2022    
SkyFunding II Facility Floating Rate Tranche [Member]      
Debt Instrument [Line Items]      
Collateral (Number of aircraft) | item 6    
Floating rate tranches $ 156,285,000    
Spread over reference rate 3.15%    
Debt, Maturity 2022-2023    
SkyFunding II Facility Fixed Rate Tranche [Member]      
Debt Instrument [Line Items]      
Collateral (Number of aircraft) | item 3    
Fixed rate tranches $ 74,490,000    
Stated interest rate 4.43%    
Debt, Maturity 2022-2023    
Camden Facility [Member]      
Debt Instrument [Line Items]      
Collateral (Number of aircraft) | item 7    
Fixed rate tranches $ 135,978,000    
Stated interest rate 4.74%    
Debt, Maturity 2018    
AerCap Partners I Facility [Member]      
Debt Instrument [Line Items]      
Collateral (Number of aircraft) | item 11    
Floating rate tranches $ 126,956,000    
Spread over reference rate 1.65%    
Debt, Maturity 2018    
StratusFunding Facility Floating Rate Tranche [Member]      
Debt Instrument [Line Items]      
Collateral (Number of aircraft) | item 2    
Floating rate tranches $ 166,514,000    
Spread over reference rate 1.95%    
Debt, Maturity 2026    
StratusFunding Facility Fixed Rate Tranche [Member]      
Debt Instrument [Line Items]      
Collateral (Number of aircraft) | item 2    
Fixed rate tranches $ 166,331,000    
Stated interest rate 3.93%    
Debt, Maturity 2026    
CieloFunding Facility [Member]      
Debt Instrument [Line Items]      
Collateral (Number of aircraft) | item 3    
Fixed rate tranches $ 126,038,000    
Stated interest rate 3.48%    
Debt, Maturity 2020    
CieloFunding II Facility [Member]      
Debt Instrument [Line Items]      
Collateral (Number of aircraft) | item 2    
Fixed rate tranches $ 71,655,000    
Stated interest rate 2.80%    
Debt, Maturity 2020    
CloudFunding Facilities [Member]      
Debt Instrument [Line Items]      
Collateral (Number of aircraft) | item 16    
Fixed rate tranches $ 270,118,000    
Stated interest rate 3.95%    
Debt, Maturity 2022-2026    
LimelightFunding Facility [Member]      
Debt Instrument [Line Items]      
Collateral (Number of aircraft) | item 2    
Fixed rate tranches $ 168,646,000    
Stated interest rate 4.70%    
Debt, Maturity 2026    
Secured Commercial Bank Financings Fixed Rate Tranche [Member]      
Debt Instrument [Line Items]      
Collateral (Number of aircraft) | item 8    
Fixed rate tranches $ 175,789,000    
Stated interest rate 3.71%    
Debt, Maturity 2016-2021    
Secured Commercial Bank Financings Floating Rate Tranche [Member]      
Debt Instrument [Line Items]      
Collateral (Number of aircraft) | item [1] 32    
Floating rate tranches $ 820,215,000    
Spread over reference rate 2.30%    
Debt, Maturity 2017-2025    
Number of engines | item 4    
Other Secured Debt [Member]      
Debt Instrument [Line Items]      
Credit facility amount outstanding $ 2,745,423,000    
Collateral (Number of aircraft) | item 106    
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%    
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%    
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]      
Debt Instrument [Line Items]      
Spread over reference rate [2] 2.25%    
Debt Instrument, Maturity Date Dec. 01, 2017    
Period from December 10, 2017 to December 9, 2018 [Member]      
Debt Instrument [Line Items]      
Spread over reference rate 3.25%    
Period from December 10, 2018 to December 9, 2019 [Member]      
Debt Instrument [Line Items]      
Spread over reference rate 3.75%    
Secured Debt [Member]      
Debt Instrument [Line Items]      
Long-term Debt $ 12,623,288,000 13,355,360,000  
Secured Debt [Member] | AerFunding Revolving Credit Facility [Member]      
Debt Instrument [Line Items]      
Long-term Debt $ 1,058,294,000 887,385,000  
Collateral (Number of aircraft) | item 32    
Debt, Maturity 2019    
Secured Debt [Member] | AeroTurbine Revolving Credit Agreement [Member]      
Debt Instrument [Line Items]      
Long-term Debt [3] $ 321,603,000 $ 302,142,000  
Debt, Maturity [3] 2019    
[1] Four 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 serve as collateral for the AeroTurbine revolving credit agreement.