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

Fair Value Measurements (Fair Value Of Flight Equipment As Of The Measurement Date, The Valuation Technique And The Related Unobservable Inputs) (Details)

v3.6.0.2
Fair Value Measurements (Fair Value Of Flight Equipment As Of The Measurement Date, The Valuation Technique And The Related Unobservable Inputs) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Assets, Fair value $ 2,425,173 $ 2,957,707
Level 1 [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Assets, Fair value 2,364,627 2,822,545
Level 2 [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Assets, Fair value 60,546 $ 135,162
Flight Equipment [Member] | Level 3 [Member] | Income Approach Valuation Technique [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Assets, Fair value $ 492,600  
Minimum [Member] | Flight Equipment [Member] | Level 3 [Member] | Income Approach Valuation Technique [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value inputs, discount rate 0.00%  
Fair value unobservable input remaining holding period 0 years  
Fair value unobservable input present value of non contractual cash flows 0.00%  
Maximum [Member] | Flight Equipment [Member] | Level 3 [Member] | Income Approach Valuation Technique [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value inputs, discount rate 14.00%  
Fair value unobservable input remaining holding period 14 years  
Fair value unobservable input present value of non contractual cash flows 100.00%  
Weighted Average [Member] | Flight Equipment [Member] | Level 3 [Member] | Income Approach Valuation Technique [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value inputs, discount rate 5.00%  
Fair value unobservable input remaining holding period 7 years  
Fair value unobservable input present value of non contractual cash flows 25.00%