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

Variable interest entities (Narrative) (Details)

v3.19.3.a.u2
Variable interest entities (Narrative) (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2019
USD ($)
aircraft
Dec. 31, 2018
USD ($)
Jun. 30, 2013
aircraft
Variable Interest Entity [Line Items]      
Number of aircraft 1,334    
Debt guarantees | $ $ 68,901 $ 88,313  
AerFunding      
Variable Interest Entity [Line Items]      
Ownership percentage 100.00%    
Ownership percentage 5.00%    
Boeing 737-800 Aircraft | ACSAL      
Variable Interest Entity [Line Items]      
Number of aircraft     8
AerCap Holdings N.V. | ACSAL      
Variable Interest Entity [Line Items]      
Ownership percentage     19.00%
AerCap Partners I      
Variable Interest Entity [Line Items]      
Ownership percentage 50.00%    
Subordinated debt | $ $ 62,400    
AerCap Partners I | Boeing 737 NG Aircraft      
Variable Interest Entity [Line Items]      
Number of aircraft 2    
AerCap Partners I | AerCap Holdings N.V.      
Variable Interest Entity [Line Items]      
Subordinated debt | $ $ 31,200    
AerCap Partners I | Deucalion Aviation Funds      
Variable Interest Entity [Line Items]      
Ownership percentage 50.00%    
Subordinated debt | $ $ 31,200    
Aercap Partners 767      
Variable Interest Entity [Line Items]      
Ownership percentage 50.00%    
Subordinated debt | $ $ 32,600    
Aercap Partners 767 | Boeing 767 300ER Aircraft      
Variable Interest Entity [Line Items]      
Number of aircraft 2    
Aercap Partners 767 | AerCap Holdings N.V.      
Variable Interest Entity [Line Items]      
Subordinated debt | $ $ 16,300    
Aercap Partners 767 | Deucalion Aviation Funds      
Variable Interest Entity [Line Items]      
Ownership percentage 50.00%    
Subordinated debt | $ $ 16,300    
AerFunding | Boeing 737 NG Aircraft      
Variable Interest Entity [Line Items]      
Number of aircraft 6    
AerFunding | Airbus 320 Family Aircraft      
Variable Interest Entity [Line Items]      
Number of aircraft 1    
AerFunding | Airbus 320 neoFamily Aircraft      
Variable Interest Entity [Line Items]      
Number of aircraft 2    
AerFunding | Airbus 350 Aircraft      
Variable Interest Entity [Line Items]      
Number of aircraft 2    
AerFunding | Boeing 787 Aircraft      
Variable Interest Entity [Line Items]      
Number of aircraft 5    
AerFunding | AerCap Holdings N.V.      
Variable Interest Entity [Line Items]      
Subordinated debt | $ $ 301,000    
Credit facility amount outstanding | $ $ 875,100    
AerDragon      
Variable Interest Entity [Line Items]      
Ownership percentage 50.00%    
AerDragon | Narrowbody Aircraft      
Variable Interest Entity [Line Items]      
Number of aircraft 28    
AerDragon | China Aviation Supplies Holding Company      
Variable Interest Entity [Line Items]      
Ownership percentage 50.00%    
AerLift      
Variable Interest Entity [Line Items]      
Debt guarantees | $ $ 68,900 $ 88,300  
AerLift | Widebody Aircraft      
Variable Interest Entity [Line Items]      
Number of aircraft 4    
AerLift | AerCap Holdings N.V.      
Variable Interest Entity [Line Items]      
Ownership percentage 39.00%    
ACSAL | Boeing 737-800 Aircraft      
Variable Interest Entity [Line Items]      
Number of aircraft 8    
Peregrine      
Variable Interest Entity [Line Items]      
Ownership percentage 9.50%    
Number of aircraft 21