Business Combinations and Asset Acquisitions	9 Months Ended
Sep. 30, 2022
Business Combination and Asset Acquisition [Abstract]
Acquisitions and Divestitures	Acquisitions and Divestitures Russia. On May 19, 2022, the Company announced that it is pursuing a sale of its operations in Russia. This decision was the result of a strategic review of alternatives performed by management with respect to Arconic’s Russian operations in consideration of the sanctions and other trade restrictions levied against Russia beginning in February 2022 and preliminary injunctions imposed on the Company’s operations in Russia by the Federal Antimonopoly Service of the Russian Federation in April 2020 (see Litigation in Note P), which include a prohibition on the ability of Arconic’s legal entity in Russia to pay dividends to the parent company. The Company is continuing to conduct business in Russia to fulfill existing obligations in accordance with applicable laws, regulations, and international rules. Arconic has engaged with both the U.S. government and Russian government with the objective of executing a lawful sale of its Russian operations. The Company has had several interested parties in the process and is ultimately working towards completion of a sale of its Russian operations to a third party pursuant to a framework agreement, the closing of which is subject to the receipt of governmental approvals and other conditions and contingencies. The process for obtaining government approvals and executing a transaction is unusually complex given current geopolitical factors and ongoing proceedings involving the Company’s operations in Russia, creating uncertainty with respect to the Company’s ability to estimate the timing or likelihood of a transaction as of September 30, 2022. We continue to monitor the situation, while assessing the financial impact and outlook for our operations in this market. As such, the Company conducted an analysis during the third quarter of 2022. Based on the Company’s analysis and review of current circumstances, there was no impairment recorded during the third quarter of 2022. The Company estimates that a charge of up to approximately $500 may be recognized if a sale is consummated or if we conclude that an impairment should be recorded. The Company’s operations in Russia are comprised of one principal location in Samara, which manufactures sheet, plate, extrusions, and forgings across all of Arconic’s end markets. The Samara facility has continued to operate at relatively normal levels although such operations may decrease over time due to the imposed sanctions and other trade restrictions, particularly if these are further elevated, as well as supplier and customer constraints. While the imposition of sanctions and trade restrictions limit a Russian entity’s ability to export goods, Samara’s operations primarily serve customer demand within Russia. The Samara facility generated third-party sales of approximately $970 in 2021 and had approximately $520 in net assets (excluding intercompany balances) and approximately 2,900 employees as of September 30, 2022 (see Litigation in Note P for additional financial information). The Company’s local Russian management team continues to operate the Samara facility without undue influence imposed by any third-party, including the Russian government. Additionally, other than the prohibition on dividend payments to the parent company, Arconic has not encountered any other significant impacts related to its control over its Russian subsidiaries. As a result, the Company reported the financial results of its Russian operations in Arconic’s Consolidated Financial Statements as of and for the three- and nine-month periods ended September 30, 2022, and will continue to do so until such time as circumstances warrant otherwise. Furthermore, while the Company is pursuing a sale of its operations in Russia, the related assets and liabilities will continue to be classified as held and in-use and will continue to be reported within the Rolled Products segment, as the timing and likelihood of any possible transaction is uncertain as of September 30, 2022. Moreover, Arconic has not recorded an impairment of long-lived or other assets given the relatively normal operating levels at Samara. That said, the situation is fluid and this fact pattern could change at any moment. As noted above, a charge of up to approximately $500 may be recognized if a sale is consummated or if we conclude that an impairment should be recorded. Building and Construction Systems. On June 6, 2022, the Company announced that it is evaluating strategic options for the businesses that comprise the Building and Constructions Systems segment, including exploring a sale of its architectural systems business (Kawneer® brand). Subsequent to this announcement, Arconic initiated a sale process of its architectural systems business, which has six principal locations in the United States, Canada, and Europe. Products manufactured under the Kawneer brand include windows, doors, and curtain walls. This business generated third-party sales of approximately $740 in 2021 and had approximately 2,800 employees as of September 30, 2022. On August 2, 2022, the Company announced a pause in the sale process of this business due to current economic conditions, particularly uncertainty in the debt markets. This business will remain classified as held and in-use in Arconic’s Consolidated Financial Statements and will continue to be reported within the Building and Construction Systems segment.

Russia. On May 19, 2022, the Company announced that it is pursuing a sale of its operations in Russia. This decision was the result of a strategic review of alternatives performed by management with respect to Arconic’s Russian operations in consideration of the sanctions and other trade restrictions levied against Russia beginning in February 2022 and preliminary injunctions imposed on the Company’s operations in Russia by the Federal Antimonopoly Service of the Russian Federation in April 2020 (see Litigation in Note P), which include a prohibition on the ability of Arconic’s legal entity in Russia to pay dividends to the parent company. The Company is continuing to conduct business in Russia to fulfill existing obligations in accordance with applicable laws, regulations, and international rules. Arconic has engaged with both the U.S. government and Russian government with the objective of executing a lawful sale of its Russian operations. The Company has had several interested parties in the process and is ultimately working towards completion of a sale of its Russian operations to a third party pursuant to a framework agreement, the closing of which is subject to the receipt of governmental approvals and other conditions and contingencies. The process for obtaining government approvals and executing a transaction is unusually complex given current geopolitical factors and ongoing proceedings involving the Company’s operations in Russia, creating uncertainty with respect to the Company’s ability to estimate the timing or likelihood of a transaction as of September 30, 2022. We continue to monitor the situation, while assessing the financial impact and outlook for our operations in this market. As such, the Company conducted an analysis during the third quarter of 2022. Based on the Company’s analysis and review of current circumstances, there was no impairment recorded during the third quarter of 2022. The Company estimates that a charge of up to approximately $500 may be recognized if a sale is consummated or if we conclude that an impairment should be recorded.

The Company’s operations in Russia are comprised of one principal location in Samara, which manufactures sheet, plate, extrusions, and forgings across all of Arconic’s end markets. The Samara facility has continued to operate at relatively normal levels although such operations may decrease over time due to the imposed sanctions and other trade restrictions, particularly if these are further elevated, as well as supplier and customer constraints. While the imposition of sanctions and trade restrictions limit a Russian entity’s ability to export goods, Samara’s operations primarily serve customer demand within Russia. The Samara facility generated third-party sales of approximately $970 in 2021 and had approximately $520 in net assets (excluding intercompany balances) and approximately 2,900 employees as of September 30, 2022 (see Litigation in Note P for additional financial information).

The Company’s local Russian management team continues to operate the Samara facility without undue influence imposed by any third-party, including the Russian government. Additionally, other than the prohibition on dividend payments to the parent company, Arconic has not encountered any other significant impacts related to its control over its Russian subsidiaries. As a result, the Company reported the financial results of its Russian operations in Arconic’s Consolidated Financial Statements as of and for the three- and nine-month periods ended September 30, 2022, and will continue to do so until such time as circumstances warrant otherwise. Furthermore, while the Company is pursuing a sale of its operations in Russia, the related assets and liabilities will continue to be classified as held and in-use and will continue to be reported within the Rolled Products segment, as the timing and likelihood of any possible transaction is uncertain as of September 30, 2022. Moreover, Arconic has not recorded an impairment of long-lived or other assets given the relatively normal operating levels at Samara. That said, the situation is fluid and this fact pattern could change at any moment. As noted above, a charge of up to approximately $500 may be recognized if a sale is consummated or if we conclude that an impairment should be recorded.

Building and Construction Systems. On June 6, 2022, the Company announced that it is evaluating strategic options for the businesses that comprise the Building and Constructions Systems segment, including exploring a sale of its architectural systems business (Kawneer® brand). Subsequent to this announcement, Arconic initiated a sale process of its architectural systems business, which has six principal locations in the United States, Canada, and Europe. Products manufactured under the Kawneer brand include windows, doors, and curtain walls. This business generated third-party sales of approximately $740 in 2021 and had approximately 2,800 employees as of September 30, 2022.