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v3.22.4

Summary of Significant Accounting Policies (Details) | 12 Months Ended
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Dec. 31, 2022 employee
United States |
Labor Concentrations |
Number of employees | 887
Percent of employees represented by United Steelworkers union | 40.00%
Percent of employees represented by International Union of Operating Engineers | 3.00%
Brazil |
Labor Concentrations |
Number of employees | 285
Coke and energy plant, machinery and equipment | Minimum |
Property, Plant and Equipment |
Useful life | 25 years
Coke and energy plant, machinery and equipment | Maximum |
Property, Plant and Equipment |
Useful life | 30 years
Logistics plant, machinery and equipment | Minimum |
Property, Plant and Equipment |
Useful life | 15 years
Logistics plant, machinery and equipment | Maximum |
Property, Plant and Equipment |
Useful life | 35 years

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