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

Debt (TUI Portfolio Acquisition Facility) (Details)

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Debt (TUI Portfolio Acquisition Facility) (Details) (USD $)
12 Months Ended
Dec. 31, 2011
Jun. 30, 2008
Debt Instrument [Line Items]    
Number of aircraft owned 251  
TUI Portfolio Acquisition Facility [Member]
   
Debt Instrument [Line Items]    
Credit facility, amount $ 262,300,000 $ 448,600,000
One month LIBOR plus a margin 2.00%  
Percentage of least ratio of tranche financed 43.00%  
Book value of aircraft pledged as collateral for debt $ 400,000,000  
Number of aircraft owned   19
Number of aircraft pledged 15  
Number of tranche aircraft to percentage of financed aircraft 1  
AerCap Partners I [Member] | TUI Portfolio Acquisition Facility [Member]
   
Debt Instrument [Line Items]    
Ownership percentage   50.00%
LIBOR Plus Margin 1.575 [Member] | TUI Portfolio Acquisition Facility [Member]
   
Debt Instrument [Line Items]    
One month LIBOR plus a margin 1.58%  
LIBOR Plus Margin 1.75 [Member] | TUI Portfolio Acquisition Facility [Member]
   
Debt Instrument [Line Items]    
One month LIBOR plus a margin 1.75%  
First Tranche [Member]
   
Debt Instrument [Line Items]    
Maturity date of senior facility Apr. 01, 2015  
Second Tranche [Member]
   
Debt Instrument [Line Items]    
Maturity date of senior facility Apr. 01, 2012  
Boeing 737-800 [Member]
   
Debt Instrument [Line Items]    
Number of aircraft owned 12  
Boeing 737-800 [Member] | TUI Portfolio Acquisition Facility [Member]
   
Debt Instrument [Line Items]    
Number of aircraft owned 11  
Boeing 757-200 [Member] | TUI Portfolio Acquisition Facility [Member]
   
Debt Instrument [Line Items]    
Number of aircraft owned 6  
Boeing 767-300 [Member] | TUI Portfolio Acquisition Facility [Member]
   
Debt Instrument [Line Items]    
Number of aircraft owned 2