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Fair Value Measurements (Carrying Amounts And Fair Values Of Financial Instruments) (Details) - USD ($) $ in Thousands | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
--- | --- | --- | --- | ---
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Cash and cash equivalents, Book value | $ 2,403,098 |  | $ 1,490,369 |  | $ 295,514 | $ 520,401
Restricted cash, Book value | 419,447 |  | 717,388 |  |  |
Derivative assets, Book value | 18,965 |  | 24,549 |  |  |
Notes receivable net, Book value | 116,197 | [1] | 135,154 | [2] |  |
Assets, Book value | 2,957,707 |  | 2,367,460 |  |  |
Debt, Book value | 29,806,843 |  | 30,402,392 |  |  |
Derivative liabilities, Book value | 21 |  | 2,208 |  |  |
Guarantee, Book value | 47,380 |  | 133,500 |  |  |
Liabilities, Book value | 29,854,244 |  | 30,538,100 |  |  |
Cash and cash equivalents, Fair value | 2,403,098 |  | 1,490,369 |  |  |
Restricted cash, Fair Value | 419,447 |  | 717,388 |  |  |
Derivative assets, Fair value | 18,965 |  | 24,549 |  |  |
Notes receivable net, Fair Value | 116,197 |  | 135,154 |  |  |
Assets, Fair value | 2,957,707 |  | 2,367,460 |  |  |
Debt, Fair value | 29,915,965 |  | 30,384,868 |  |  |
Derivative liabilities, Fair value | 21 |  | 2,208 |  |  |
Guarantee, Fair value | 46,827 |  | 131,814 |  |  |
Liabilities, Fair value | 29,962,813 |  | 30,518,890 |  |  |
Level 1 [Member] |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Cash and cash equivalents, Fair value | 2,403,098 |  | 1,490,369 |  |  |
Restricted cash, Fair Value | 419,447 |  | 717,388 |  |  |
Assets, Fair value | 2,822,545 |  | 2,207,757 |  |  |
Level 2 [Member] |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Derivative assets, Fair value | 18,965 |  | 24,549 |  |  |
Notes receivable net, Fair Value | 116,197 |  | 135,154 |  |  |
Assets, Fair value | 135,162 |  | 159,703 |  |  |
Debt, Fair value | 29,915,965 |  | 30,384,868 |  |  |
Derivative liabilities, Fair value | 21 |  | 2,208 |  |  |
Liabilities, Fair value | 29,915,986 |  | 30,387,076 |  |  |
Level 3 [Member] |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |
Guarantee, Fair value | 46,827 |  | 131,814 |  |  |
Liabilities, Fair value | $ 46,827 |  | $ 131,814 |  |  |
[1] | As of December 31, 2015, we did not have an allowance for credit losses on notes receivables. We recognized a $2.0 million provision during the year ended December 31, 2015, which was used upon termination of the related leases.
[2] | As of December 31, 2014, 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, 2014.

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- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash -URI http://asc.fasb.org/extlink&oid=6506951 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6676-107765 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3044-108585 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash Equivalents -URI http://asc.fasb.org/extlink&oid=6507016 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.1) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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