Quarterly report pursuant to Section 13 or 15(d)

BASIS OF PRESENTATION Property, Plant and Equipment (Details)

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BASIS OF PRESENTATION Property, Plant and Equipment (Details)
 9 Months Ended
Sep. 30, 2018
Vehicles | Minimum  
Property, Plant and Equipment [Line Items]  
PPE useful life 6 years
Vehicles | Maximum  
Property, Plant and Equipment [Line Items]  
PPE useful life 15 years
Aircraft | Minimum  
Property, Plant and Equipment [Line Items]  
PPE useful life 12 years
Aircraft | Maximum  
Property, Plant and Equipment [Line Items]  
PPE useful life 30 years
Buildings | Minimum  
Property, Plant and Equipment [Line Items]  
PPE useful life 20 years
Buildings | Maximum  
Property, Plant and Equipment [Line Items]  
PPE useful life 40 years
Plant equipment | Minimum  
Property, Plant and Equipment [Line Items]  
PPE useful life 3 years
Plant equipment | Maximum  
Property, Plant and Equipment [Line Items]  
PPE useful life 20 years
Technology equipment | Minimum  
Property, Plant and Equipment [Line Items]  
PPE useful life 3 years
Technology equipment | Maximum  
Property, Plant and Equipment [Line Items]  
PPE useful life 5 years