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Subsequent Events - (Details) - Subsequent Event - USD ($) $ / shares in Units, $ in Millions | Dec. 28, 2018 | Nov. 07, 2018 | Oct. 29, 2018
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Subsequent Event [Line Items] |  |  |
Common stock dividends (in dollars per share) |  | $ 0.175 |
Scenario, Forecast | Alpha |  |  |
Subsequent Event [Line Items] |  |  |
Total purchase consideration | $ 750 |  |
Portion of purchase consideration payable in cash | 650 |  |
Portion of purchase consideration payable in Company's shares | $ 100 |  |
Minimum |  |  |
Subsequent Event [Line Items] |  |  |
Business Combination, Estimated Closing Period |  |  | 30 days
Maximum |  |  |
Subsequent Event [Line Items] |  |  |
Business Combination, Estimated Closing Period |  |  | 60 days

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- Definition Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=109124213&loc=d3e6613-128477 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=109124213&loc=d3e6578-128477 + Details
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