Quarterly report pursuant to Section 13 or 15(d)

Subsequent Events (Hedging) (Details)

v3.20.1
Subsequent Events (Hedging) (Details) - Forecast - Not Designated as Hedging Instrument
9 Months Ended 12 Months Ended
Dec. 31, 2020
MMBTU
$ / MMBTU
$ / bbl
bbl
Dec. 31, 2021
MMBTU
$ / MMBTU
$ / bbl
bbl
Commodity - Oil | Short    
Subsequent Event [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 | Swap contracts    
Subsequent Event [Line Items]    
Total volume (Bbls) | bbl 13,085,720 0
Weighted average price (in dollars per share) 42.11 0
Commodity - Oil | Oil contracts (WTI) | Swap contracts    
Subsequent Event [Line Items]    
Total volume (Bbls) | bbl 915,000 0
Weighted average price (in dollars per share) | $ / bbl 29.77 0
Commodity - Oil | Oil contracts (WTI Calendar Month Average Roll) | Swap contracts    
Subsequent Event [Line Items]    
Total volume (Bbls) | bbl 5,697,500 0
Weighted average price (in dollars per share) | $ / bbl (2.66) 0
Commodity - Oil | Oil contracts (Brent ICE differential) | Swap contracts    
Subsequent Event [Line Items]    
Total volume (Bbls) | bbl 396,800 0
Weighted average price (in dollars per share) | $ / bbl (4.00) 0
Commodity - Natural gas | Swap contracts    
Subsequent Event [Line Items]    
Weighted average price (in dollars per share) 2.20 0
Total volume (MMBtu) | MMBTU 9,170,000 0
Commodity - Natural gas | Natural gas contracts (Henry Hub) | Swap contracts    
Subsequent Event [Line Items]    
Weighted average price (in dollars per share) 0 2.70
Total volume (MMBtu) | MMBTU 0 8,675,000
Commodity - Natural gas | Natural gas contracts (Henry Hub) | Collar contracts    
Subsequent Event [Line Items]    
Total volume (MMBtu) | MMBTU 1,525,000 7,750,000
Commodity - Natural gas | Natural gas contracts (Henry Hub) | Collar contracts | Short    
Subsequent Event [Line Items]    
Weighted average price (in dollars per share) 3.25 2.93
Commodity - Natural gas | Natural gas contracts (Henry Hub) | Collar contracts | Long    
Subsequent Event [Line Items]    
Weighted average price (in dollars per share) 2.67 2.55