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Fair Value of Financial Instruments Fair Value of Long-Term Debt (Details) - USD ($) $ in Thousands | Jun. 30, 2015 | Dec. 31, 2014
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Derivative Instruments and Hedging Activities Disclosure [Abstract] |  |
Total long-term debt | $ 3,990,308 | $ 2,934,131
Total long-term debt, fair value | $ 4,050,447 | $ 2,994,935

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- Definition Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13433-108611 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13476-108611 + Details
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- References No definition available. + Details
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- Definition Amount of long-term debt and capital lease obligations including current maturities. + References No definition available. + Details
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