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

Debt (Unsecured Narrative) (Details)

v3.6.0.2
Debt (Unsecured Narrative) (Details) - USD ($)
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Jan. 31, 2017
May 31, 2016
Oct. 31, 2015
Jun. 30, 2015
Sep. 30, 2014
May 31, 2014
May 31, 2012
Debt Instrument [Line Items]                    
Amortization of debt issuance costs and debt discount $ 55,768,000 $ 45,582,000 $ 86,184,000              
Debt issuance cost and debt discount amortization period, end range 2045                  
Long-term Debt $ 27,716,999,000 29,641,863,000                
January 2017 Notes [Member] | Subsequent Event [Member]                    
Debt Instrument [Line Items]                    
Face amount       $ 600,000,000            
Stated interest rate       3.50%            
ILFC Legacy Notes [Member]                    
Debt Instrument [Line Items]                    
Long-term Debt $ 7,670,000,000                  
ILFC Legacy Notes [Member] | Minimum [Member]                    
Debt Instrument [Line Items]                    
Stated interest rate 3.875%                  
ILFC Legacy Notes [Member] | Maximum [Member]                    
Debt Instrument [Line Items]                    
Stated interest rate 8.875%                  
AerCap Aviation Notes [Member]                    
Debt Instrument [Line Items]                    
Amortization of debt issuance costs and debt discount $ 56,000,000 46,000,000 86,000,000              
Long-term Debt 27,717,000,000 29,642,000,000                
Face amount $ 300,000,000                 $ 300,000,000
Stated interest rate 6.375%                 6.375%
AGAT/AICDC Notes [Member]                    
Debt Instrument [Line Items]                    
Amortization of debt issuance costs and debt discount $ 56,000,000 46,000,000 $ 86,000,000              
Long-term Debt $ 27,717,000,000 $ 29,642,000,000                
Spread over reference rate 0.50%                  
Amount allowed to be repurchased as a percentage of outstanding principal 100.00%                  
AGAT/AICDC Notes [Member] | Acquisition Notes [Member]                    
Debt Instrument [Line Items]                    
Face amount                 $ 2,600,000,000  
AGAT/AICDC Notes [Member] | 2017 Notes [Member]                    
Debt Instrument [Line Items]                    
Face amount                 $ 400,000,000  
Stated interest rate                 2.75%  
AGAT/AICDC Notes [Member] | 2019 Notes [Member]                    
Debt Instrument [Line Items]                    
Face amount                 $ 1,100,000,000  
Stated interest rate                 3.75%  
AGAT/AICDC Notes [Member] | 2020 Notes [Member]                    
Debt Instrument [Line Items]                    
Face amount             $ 500,000,000      
Stated interest rate             4.25%      
AGAT/AICDC Notes [Member] | 2021 Notes [Member]                    
Debt Instrument [Line Items]                    
Face amount                 $ 1,100,000,000  
Stated interest rate                 4.50%  
AGAT/AICDC Notes [Member] | September 2014 Notes [Member]                    
Debt Instrument [Line Items]                    
Face amount               $ 800,000,000    
Stated interest rate               5.00%    
AGAT/AICDC Notes [Member] | June 2015 Notes [Member]                    
Debt Instrument [Line Items]                    
Face amount             $ 1,000,000,000      
AGAT/AICDC Notes [Member] | 2022 Notes [Member]                    
Debt Instrument [Line Items]                    
Face amount             $ 500,000,000      
Stated interest rate             4.625%      
AGAT/AICDC Notes [Member] | October 2015 Notes [Member]                    
Debt Instrument [Line Items]                    
Face amount           $ 1,000,000,000        
Stated interest rate           4.625%        
AGAT/AICDC Notes [Member] | May 2016 Notes [Member]                    
Debt Instrument [Line Items]                    
Face amount         $ 1,000,000,000          
Stated interest rate         3.95%          
AGAT/AICDC Notes [Member] | January 2017 Notes [Member] | Subsequent Event [Member]                    
Debt Instrument [Line Items]                    
Face amount       $ 600,000,000            
Stated interest rate       3.50%