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Accounting Policies - Estimated Useful Lives of Property, Plant and Equipment (Details)
 12 Months Ended
Dec. 31, 2019
Buildings and improvements [member] | Bottom of range [member]  
Statement Line Items [Line Items]  
Property, plant and equipment (Year) 30 years
Buildings and improvements [member] | Top of range [member]  
Statement Line Items [Line Items]  
Property, plant and equipment (Year) 50 years
Plant and production equipment [member] | Bottom of range [member]  
Statement Line Items [Line Items]  
Property, plant and equipment (Year) 10 years
Plant and production equipment [member] | Top of range [member]  
Statement Line Items [Line Items]  
Property, plant and equipment (Year) 40 years
Vehicles, furniture and fixtures, and other equipment [member] | Bottom of range [member]  
Statement Line Items [Line Items]  
Property, plant and equipment (Year) 4 years
Vehicles, furniture and fixtures, and other equipment [member] | Top of range [member]  
Statement Line Items [Line Items]  
Property, plant and equipment (Year) 10 years