Annual report pursuant to Section 13 and 15(d)

FINANCIAL INSTRUMENTS (Details)

v3.20.4
FINANCIAL INSTRUMENTS (Details) - Commodity swaps
$ in Millions
12 Months Ended
Dec. 31, 2020
USD ($)
MMcf
Dec. 31, 2019
USD ($)
Derivatives, Fair Value [Line Items]    
Hedged portions of expected sales of equity production | MMcf 7,500  
Not Designated as Hedging Instrument    
Derivatives, Fair Value [Line Items]    
Gain on derivative $ 5.1  
Loss on derivative   $ 3.7
Unrealized gain derivatives 2.6 $ 3.4
Other Current Assets    
Derivatives, Fair Value [Line Items]    
Derivative assets (liabilities), at fair value, net 0.8  
Other non-current assets    
Derivatives, Fair Value [Line Items]    
Derivative assets (liabilities), at fair value, net $ 0.1