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

Debt (AerCap trust & AICDC notes) (Details)

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Debt (AerCap trust & AICDC notes) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Maturities of Long-term Debt [Abstract]    
2020 $ 3,454,301  
2021 4,450,347  
2022 6,859,785  
2023 3,532,951  
2024 3,010,218  
Thereafter 8,220,628  
Unsecured    
Maturities of Long-term Debt [Abstract]    
Debt 17,523,093 $ 17,187,314
Unsecured | AerCap Trust & AICDC Notes    
Maturities of Long-term Debt [Abstract]    
2020 1,500,000  
2021 2,600,000  
2022 2,100,000  
2023 1,200,000  
2024 1,650,000  
Thereafter 3,450,000  
Debt $ 12,500,000 $ 10,749,864
Redemption price of debt instrument, percentage 100.00%  
Unsecured | AerCap Trust & AICDC Notes | Minimum    
Maturities of Long-term Debt [Abstract]    
Stated interest rate 2.875%  
Unsecured | AerCap Trust & AICDC Notes | Maximum    
Maturities of Long-term Debt [Abstract]    
Stated interest rate 5.00%