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Subsequent Events | 3 Months Ended
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Mar. 31, 2018
Subsequent Events [Abstract] |
Subsequent Events | Subsequent Events Management evaluated all activity of Arconic and concluded that no subsequent events have occurred that would require recognition in the Consolidated Financial Statements or disclosure in the Notes to the Consolidated Financial Statements, except as noted below: See Note P for further details of a subsequent event related to the sale of the Latin America extrusions business. On April 13, 2018, the United Auto Workers ratified a new five-year labor agreement, effective May 1, 2018 covering approximately 1,300 U.S. employees of Arconic. A provision within the agreement includes a retirement benefit increase for future retirees that participate in a defined benefit pension plan, which impacts approximately 300 of those employees. In addition, effective January 1, 2019, benefit accruals for future service will cease. As result of these changes, a curtailment charge of approximately $10 will be recorded in Restructuring and other charges in the second quarter of 2018. On April 18, 2018, Arconic Inc. disclosed that, effective April 20, 2018, Eric V. Roegner will no longer serve as Executive Vice President and Group President, Engineered Products and Solutions, and President of Arconic Defense.

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- Definition The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 855 -URI http://asc.fasb.org/topic&trid=2122774 + Details
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