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Summary of Significant Accounting Policies - Weighted-average Useful Lives of Structures and Machinery and Equipment (Details) | Dec. 31, 2024
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Structures | Engine Products |
Property, Plant and Equipment [Line Items] |
Weighted-average useful lives of assets, years | 28 years
Structures | Fastening Systems |
Property, Plant and Equipment [Line Items] |
Weighted-average useful lives of assets, years | 27 years
Structures | Engineered Structures |
Property, Plant and Equipment [Line Items] |
Weighted-average useful lives of assets, years | 29 years
Structures | Forged Wheels |
Property, Plant and Equipment [Line Items] |
Weighted-average useful lives of assets, years | 27 years
Machinery and equipment | Engine Products |
Property, Plant and Equipment [Line Items] |
Weighted-average useful lives of assets, years | 16 years
Machinery and equipment | Fastening Systems |
Property, Plant and Equipment [Line Items] |
Weighted-average useful lives of assets, years | 17 years
Machinery and equipment | Engineered Structures |
Property, Plant and Equipment [Line Items] |
Weighted-average useful lives of assets, years | 20 years
Machinery and equipment | Forged Wheels |
Property, Plant and Equipment [Line Items] |
Weighted-average useful lives of assets, years | 18 years

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 7A -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-7A + Details
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- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
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