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Summary of Significant Accounting Policies (Property, Plant and Equipment) (Details)
12 Months Ended
Dec. 31, 2020
Land improvements  
Property, Plant and Equipment [Line Items]  
Estimated useful lives (in years) 25 years
Buildings and building improvements | Minimum  
Property, Plant and Equipment [Line Items]  
Estimated useful lives (in years) 25 years
Buildings and building improvements | Maximum  
Property, Plant and Equipment [Line Items]  
Estimated useful lives (in years) 40 years
Machinery and equipment | Minimum  
Property, Plant and Equipment [Line Items]  
Estimated useful lives (in years) 3 years
Machinery and equipment | Maximum  
Property, Plant and Equipment [Line Items]  
Estimated useful lives (in years) 18 years