Joint Ventures and Noncontrolling Interests (Details)	Dec. 31, 2024
American Alloys
Joint Ventures and Noncontrolling Interests
Ownership percentage in consolidated investments other than equity method investment	60.00%
Indiana Pickling & Processing Company
Joint Ventures and Noncontrolling Interests
Ownership percentage in consolidated investments other than equity method investment	56.00%
Valex Corp. | South Korea
Joint Ventures and Noncontrolling Interests
Ownership percentage in consolidated investments other than equity method investment	96.00%
Minimum
Joint Ventures and Noncontrolling Interests
Ownership percentage of investee for accounting under the equity method of accounting	20.00%
Percentage of ownership for consolidation of financial statements	50.00%
Maximum
Joint Ventures and Noncontrolling Interests
Ownership percentage of investee for accounting under the equity method of accounting	50.00%