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

Fair Value Measurements (Carrying Amounts And Fair Values Of Financial Instruments) (Details)

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Fair Value Measurements (Carrying Amounts And Fair Values Of Financial Instruments) (Details) - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Cash and cash equivalents, Book value $ 2,035,447 $ 2,403,098 $ 1,490,369 $ 295,514
Restricted cash, Book value 329,180 419,447    
Derivative assets, Book value 37,187 18,965    
Notes receivable net, Book value 23,359 [1],[2] 116,197 [3]    
Assets, Book value 2,425,173 2,957,707    
Debt, Book value [4] 27,873,900 29,806,843    
Derivative liabilities, Book value   21    
Guarantee, Book value 51,804 47,380    
Liabilities, Book value 27,925,704 29,854,244    
Cash and cash equivalents, Fair value 2,035,447 2,403,098    
Restricted cash, Fair Value 329,180 419,447    
Derivative assets, Fair value 37,187 18,965    
Notes receivable net, Fair Value 23,359 116,197    
Assets, Fair value 2,425,173 2,957,707    
Debt, Fair value 28,203,635 29,915,965    
Derivative liabilities, Fair value   21    
Guarantee, Fair value 51,804 46,827    
Liabilities, Fair value 28,255,439 29,962,813    
Level 1 [Member]        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Cash and cash equivalents, Fair value 2,035,447 2,403,098    
Restricted cash, Fair Value 329,180 419,447    
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]        
Derivative assets, Fair value 37,187 18,965    
Notes receivable net, Fair Value 23,359 116,197    
Assets, Fair value 60,546 135,162    
Debt, Fair value 28,203,635 29,915,965    
Derivative liabilities, Fair value   21    
Liabilities, Fair value 28,203,635 29,915,986    
Level 3 [Member]        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Guarantee, Fair value 51,804 46,827    
Liabilities, Fair value $ 51,804 $ 46,827    
[1] As of December 31, 2016, we did not have an allowance for credit losses on notes receivables and there was no activity recorded for credit losses during the year ended December 31, 2016.
[2] In December 2016, the ALS Note Receivable was repaid. Please refer to Note 28-Variable Interest Entities for further details.
[3] As of December 31, 2015, we did not have an allowance for credit losses on notes receivables. We recognized a $2.0 million provision, which was used upon termination of the related leases during the year ended December 31, 2015.
[4] Excludes debt issuance costs and debt discounts.