Description of Business	12 Months Ended
Dec. 31, 2024
Accounting Policies [Abstract]
Description of Business	Description of Business Ampco-Pittsburgh Corporation and its subsidiaries (collectively, the “Corporation”) manufacture and sell highly engineered, high-performance specialty metal products and customized equipment utilized by industry throughout the world. It operates in two business segments, the Forged and Cast Engineered Products (“FCEP”) segment and the Air and Liquid Processing (“ALP”) segment. This segment presentation is consistent with how the Corporation’s chief operating decision maker evaluates financial performance and makes resource allocation and strategic decisions about the business (see Note 23).

The entire disclosure for the business description and basis of presentation concepts. Business description describes the nature and type of organization including but not limited to organizational structure as may be applicable to holding companies, parent and subsidiary relationships, business divisions, business units, business segments, affiliates and information about significant ownership of the reporting entity. Basis of presentation describes the underlying basis used to prepare the financial statements (for example, US Generally Accepted Accounting Principles, Other Comprehensive Basis of Accounting, IFRS).

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-Topic 205
-Name Accounting Standards Codification
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