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Basis of Presentation and Summary of Significant Accounting Policies - Carrying Values and Fair Values of Debt (Details) - USD ($) $ in Thousands | Mar. 31, 2018 | Dec. 31, 2017
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Reported Value Measurement |  |
Debt Instrument [Line Items] |  |
Debt instruments, Fair Value | $ 9,537,663 | $ 10,128,020
Koch Preferred Securities, Fair Value | 708,111 | 682,449
Estimate of Fair Value Measurement |  |
Debt Instrument [Line Items] |  |
Debt instruments, Fair Value | 9,914,144 | 10,868,626
Koch Preferred Securities, Fair Value | $ 942,500 | $ 924,700

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. + References No definition available. + Details
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- Definition The fair value of shares that would be issued, determined under the conditions specified in the contract if the settlement were to occur at the reporting date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6940734&loc=d3e22047-110879 + Details
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- Details
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