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

Commitments And Contingencies (Narrative) (Details)

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Commitments And Contingencies (Narrative) (Details) (USD $)
In Millions, unless otherwise specified
0 Months Ended
Mar. 16, 2009
Jul. 31, 2011
Dec. 30, 2008
Dec. 31, 2011
VASP Litigation [Member]
Jul. 31, 2006
VASP Litigation [Member]
Dec. 31, 2011
Aircraft [Member]
VASP Litigation [Member]
Dec. 31, 2011
Engines [Member]
VASP Litigation [Member]
Dec. 31, 2011
Engines [Member]
Transbrasil Litigation [Member]
Capital Leased Assets [Line Items]                
Number of capital leased assets           13 3 2
Claim award for loss of profit plus accrued interest $ 40.0              
Number of leases that company incurred obligations due to another company's default     7 9 7      
Lease agreements awarded default judgement 7              
Aggregate amount due from AerCap   $ 210