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Business Combinations, Goodwill and Intangible Assets - Additional Information (Details) - Alcoa Warrick LLC [Member] - USD ($) $ in Millions |  |  | 3 Months Ended | 6 Months Ended
--- | --- | --- | --- | ---
Jun. 30, 2021 | Mar. 31, 2021 | Jun. 30, 2021 | Jun. 30, 2021
Finite Lived Intangible Assets [Line Items] |  |  |  |
Business combination, purchase price | $ 670.0 | $ 670.0 |  |
Selling, General, Administrative, Research and Development |  |  |  |
Finite Lived Intangible Assets [Line Items] |  |  |  |
Acquisition costs |  |  | $ 3.0 | $ 14.0

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- Definition Amount of consideration to be transferred on the date of acquisition consisting of acquisition-date fair value of assets transferred by the acquirer and liabilities incurred by the acquirer. + References No definition available. + Details
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- Definition This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=116868678&loc=d3e1043-128460 + 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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- Details
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