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DERIVATIVE INSTRUMENTS (Tables)
9 Months Ended
Sep. 30, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
Schedule of Energy Generation Amounts The amount of energy generation which we have hedged on a forward basis under agreements with various financial institutions as of September 30, 2019 is indicated in the following table (in millions):
Calendar Year
 
Hedged MWh
2019
 
0.7
2020
 
1.4
2021
 
0.6
2022
 
0.1
Total
 
2.8