Annual report pursuant to Section 13 and 15(d)

BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Depreciation Methods and Useful Lives) (Details)

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BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Depreciation Methods and Useful Lives) (Details)
 12 Months Ended
Dec. 31, 2016
Building [Member]  
Property, Plant and Equipment [Line Items]  
Property, Plant and Equipment, Useful Life 45 years
Equipment [Member] | Minimum [Member]  
Property, Plant and Equipment [Line Items]  
Property, Plant and Equipment, Useful Life 3 years
Equipment [Member] | Maximum [Member]  
Property, Plant and Equipment [Line Items]  
Property, Plant and Equipment, Useful Life 20 years
Other Machinery and Equipment [Member] | Minimum [Member]  
Property, Plant and Equipment [Line Items]  
Property, Plant and Equipment, Useful Life 10 years
Other Machinery and Equipment [Member] | Maximum [Member]  
Property, Plant and Equipment [Line Items]  
Property, Plant and Equipment, Useful Life 45 years
Electric Power Facilities [Member] | Minimum [Member]  
Property, Plant and Equipment [Line Items]  
Property, Plant and Equipment, Useful Life 10 years
Electric Power Facilities [Member] | Maximum [Member]  
Property, Plant and Equipment [Line Items]  
Property, Plant and Equipment, Useful Life 45 years
Land Improvements [Member] | Minimum [Member]  
Property, Plant and Equipment [Line Items]  
Property, Plant and Equipment, Useful Life 20 years
Land Improvements [Member] | Maximum [Member]  
Property, Plant and Equipment [Line Items]  
Property, Plant and Equipment, Useful Life 45 years
Computer Equipment [Member] | Minimum [Member]  
Property, Plant and Equipment [Line Items]  
Property, Plant and Equipment, Useful Life 3 years
Computer Equipment [Member] | Maximum [Member]  
Property, Plant and Equipment [Line Items]  
Property, Plant and Equipment, Useful Life 15 years