v3.19.1

Merger Agreement (Details) - USD ($) $ / shares in Units, $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Mar. 08, 2018
Business Acquisition [Line Items] |  |  |
Sale of Stock, Price Per Share |  |  | $ 15.25
Sale of Stock, Consideration Received on Transaction | $ 5,600 |  |
Payments for Merger Related Costs | $ 33 | $ 15 |

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- Definition The amount of cash paid during the reporting period for charges associated with the mergers. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3536-108585 + Details
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