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Guarantor Financial Statement Information - Narrative (Details) $ in Millions | Mar. 31, 2019 USD ($) subsidiary | Dec. 31, 2018 USD ($)
--- | --- | ---
Condensed Financial Statements, Captions [Line Items] |  |
Ownership percentage | 100.00% |
Number of subsidiaries as guarantors of unsecured debt | subsidiary | 3 |
Unsecured Senior Notes |  |
Condensed Financial Statements, Captions [Line Items] |  |
Unsecured debt | $ 2,498 | $ 2,498
6.500% interest rate payable semi-annually, due July 2021 | Unsecured Senior Notes |  |
Condensed Financial Statements, Captions [Line Items] |  |
Interest rate | 6.50% |
Unsecured debt | $ 592 | 592
6.500% interest rate payable semi-annually, due June 2022 | Unsecured Senior Notes |  |
Condensed Financial Statements, Captions [Line Items] |  |
Interest rate | 6.50% |
Unsecured debt | $ 206 | $ 206

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- Definition Guarantor Subsidiary, Ownership Percentage + References No definition available. + Details
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- Definition Number of Subsidiaries as Guarantors of Unsecured Debt + References No definition available. + Details
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- Definition Unsecured Debt, Gross + References No definition available. + Details
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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 Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Details
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- Details
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- Details
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