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Business Disposition and Discontinued Operations - Additional Information (Details) - USD ($) $ in Millions | 3 Months Ended |
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Mar. 31, 2019 | May 31, 2018
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |
Income (Loss) from Ongoing Equity Method Investment in Discontinued Operation after Disposal | $ 28 |
Discontinued Operations, Held-for-sale or Disposed of by Sale [Member] |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |
Ownership interest retained, percentage |  | 9.70%

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- Definition Amount of share in income (loss) of the equity method investee after the disposal of the discontinued operation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 4B -Subparagraph (d)(4) -URI http://asc.fasb.org/extlink&oid=109222650&loc=SL51721665-107760 + 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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- Details
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