Quarterly report pursuant to Section 13 or 15(d)

Derivative Instruments and Hedging Activities (Schedule of Outstanding Oil and Natural Gas Derivative Contracts) (Details)

v3.20.1
Derivative Instruments and Hedging Activities (Schedule of Outstanding Oil and Natural Gas Derivative Contracts) (Details) - Forecast - Not Designated as Hedging Instrument
 9 Months Ended 12 Months Ended
Dec. 31, 2020
MMBTU
$ / bbl
$ / MMBTU
bbl
Dec. 31, 2021
MMBTU
$ / bbl
$ / MMBTU
bbl
Commodity - Oil | Short    
Derivative [Line Items]    
Total volume (Bbls) | bbl 2,750,000 4,825,300
Weighted average price (in dollars per share) 45.59 63.62
Commodity - Oil | Put spreads    
Derivative [Line Items]    
Weighted average price (in dollars per share) | $ / bbl 56.06 0
Commodity - Oil | Put spreads | Put option | Short    
Derivative [Line Items]    
Total volume (Bbls) | bbl 1,650,000 0
Weighted average price (in dollars per share) | $ / bbl 42.50 0
Commodity - Oil | Collar contracts with short puts (Brent ICE, three-way collars)    
Derivative [Line Items]    
Total volume (Bbls) | bbl 366,000 0
Weighted average price (in dollars per share) | $ / bbl 46.15 0
Commodity - Oil | Oil contracts (Midland basis differential)    
Derivative [Line Items]    
Total volume (Bbls) | bbl 6,574,800 4,015,100
Weighted average price (in dollars per share) | $ / bbl   0.40
Weighted average price (in dollars per share) | $ / bbl (1.24)  
Commodity - Oil | Oil contracts (Argus Houston MEH basis differential)    
Derivative [Line Items]    
Total volume (Bbls) | bbl 4,612,205 0
Weighted average price (in dollars per share) | $ / bbl (0.24) 0
Commodity - Oil | Oil contracts (Argus Houston MEH swaps)    
Derivative [Line Items]    
Total volume (Bbls) | bbl 504,500 0
Weighted average price (in dollars per share) 58.22 0
Commodity - Oil | Swap contracts    
Derivative [Line Items]    
Total volume (Bbls) | bbl 13,085,720 0
Weighted average price (in dollars per share) 42.11 0
Commodity - Natural gas | Call option | Short    
Derivative [Line Items]    
Weighted average price (in dollars per share) 3.50 3.09
Total volume (MMBtu) | MMBTU 9,075,000 7,300,000
Commodity - Natural gas | Collar contracts (three-way collars)    
Derivative [Line Items]    
Total volume (MMBtu) | MMBTU 3,665,000 1,350,000
Commodity - Natural gas | Collar contracts (three-way collars) | Long    
Derivative [Line Items]    
Weighted average price (in dollars per share) 2.48 2.42
Commodity - Natural gas | Collar contracts (three-way collars) | Put option | Short    
Derivative [Line Items]    
Weighted average price (in dollars per share) 2.00 2.00
Commodity - Natural gas | Collar contracts (three-way collars) | Call option | Short    
Derivative [Line Items]    
Weighted average price (in dollars per share) 2.74 2.70
Commodity - Natural gas | Swap contracts    
Derivative [Line Items]    
Weighted average price (in dollars per share) 2.20 0
Total volume (MMBtu) | MMBTU 9,170,000 0
Commodity - Natural gas | Swap contracts | Waha basis differential    
Derivative [Line Items]    
Total volume (MMBtu) | MMBTU 18,982,000 0
Weighted average price (in dollars per share) (1.08) 0