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

Share Capital (Details)

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Share Capital (Details)
In Thousands, except Share data, unless otherwise specified
0 Months Ended 12 Months Ended 12 Months Ended 0 Months Ended
Nov. 02, 2011
USD ($)
Aug. 06, 2007
Nov. 27, 2006
USD ($)
Nov. 10, 2006
EUR (€)
Dec. 31, 2011
USD ($)
Dec. 31, 2010
USD ($)
Dec. 31, 2011
EUR (€)
Dec. 31, 2011
AerCap Holdings C.V. [Member]
USD ($)
Nov. 10, 2006
AerCap Holdings C.V. [Member]
EUR (€)
Dec. 31, 2011
Limited Partners [Member]
AerCap Holdings C.V. [Member]
Dec. 31, 2011
General Partner [Member]
AerCap Holdings C.V. [Member]
Mar. 25, 2010
Genesis [Member]
Nov. 11, 2010
Waha Capital PJSC [Member]
Share Capital [Line Items]                          
Partnership capital               $ 370,000          
Number of partners                   4 1    
Shares outstanding       78,236,957   149,232,426 149,232,426 45,000          
Share split, effective date       November 10, 2006                  
Share split, conversion ratio       1,738.60                  
Ordinary share capital, shares issued     26,100,000 78,236,957   149,232,426 149,232,426            
Ordinary share, par value       € 0.01     € 0.01   € 1.00        
Cash received for new shares issued           785,703              
Issuance of equity capital, sale price per share     $ 23                    
Proceeds from initial public offering     143,017                    
Repayment of senior and subordinated debt         168,600                
Write off debt issuance costs         3,300                
Prepayment penalties paid         1,686                
Shares issued for acquisition                       34,348,858 29,846,611
Shares authorized           250,000,000 250,000,000            
Public offering   20,000,000 6,800,000                    
Treasury stock acquired, shares 9,402,663                        
Consideration for repurchase of ordinary shares $ 100,000       $ 100,000                
Average share price of shares repurchased $ 10.64                        
Treasury stock, shares             9,332,982