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Subsequent Events	9 Months Ended
	Sep. 30, 2025
Subsequent Events
Subsequent Events	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 16. Subsequent Events ​ In October 2025, the Company has substantially completed or engaged in discussions with the European Works Council or certain local unions related to additional plant or furnace closures and the elimination of selling, general and administrative positions in Europe.  These actions are part of the Company’s Fit to Win initiative to reduce redundant production capacity and begin to optimize its network.   ​ As a result, subject to the finalization of certain estimates, the Company expects to record charges associated with these closures ranging between approximately $200 million to $225 million in the fourth quarter of 2025.  Major components of the charges range between approximately $60 million to $65 million for impairment of plant-related assets, such as the closed furnaces and related machinery, and range between $140 million to $160 million for one-time employee separation benefits and other costs related to the closures that would result in future cash expenditures.  ​ ​

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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/disclosureRef
-Topic 855
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org/855/tableOfContent

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 855
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483399/855-10-50-2

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