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

Investments (Details)

v3.8.0.1
Investments (Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Schedule of Equity Method Investments [Line Items]    
Undistributed earnings of investments $ 40,200 $ 38,400
Peregrine [Member]    
Schedule of Equity Method Investments [Line Items]    
Cost method investments 2,100  
Variable Interest Entity, Not Primary Beneficiary [Member]    
Schedule of Equity Method Investments [Line Items]    
Equity investment in unconsolidated joint venture $ 120,833 118,777
Variable Interest Entity, Not Primary Beneficiary [Member] | AerDragon [Member]    
Schedule of Equity Method Investments [Line Items]    
Equity investment, ownership percentage 16.70%  
Equity investment in unconsolidated joint venture $ 61,706 60,124
Variable Interest Entity, Not Primary Beneficiary [Member] | AerLift [Member]    
Schedule of Equity Method Investments [Line Items]    
Equity investment, ownership percentage 39.30%  
Equity investment in unconsolidated joint venture $ 44,930 45,087
Variable Interest Entity, Not Primary Beneficiary [Member] | ACSAL [Member]    
Schedule of Equity Method Investments [Line Items]    
Equity investment, ownership percentage 19.40%  
Equity investment in unconsolidated joint venture $ 14,197 $ 13,566