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Summary Of Significant Accounting Policies (Narrative) (Details)
 12 Months Ended
Dec. 31, 2016
USD ($)
segment
Dec. 31, 2015
USD ($)
 [1]
Summary Of Significant Accounting Policies [Line Items]    
Minimum aircraft age threshold for performance of impairment assessments 5 years  
Other inventory minimum age threshold for consideration as excess inventory 4 years  
Carrying value of engine and airframe parts and rotable and consumable parts $ 0  
Number of reportable segments | segment 1  
Debt issuance costs and debt discounts $ 156,901,000 $ 164,980,000
Flight Equipment [Member]    
Summary Of Significant Accounting Policies [Line Items]    
Estimated useful life of asset, years 25 years  
Percentage of estimates for residual values of original manufacture cost 15.00%  
[1] We retrospectively reclassified $165.0 million of debt issuance costs from other assets to a direct reduction of the debt liability as of December 31, 2015. See Note 3-Summary of significant accounting policies.