Annual report pursuant to Section 13 and 15(d)

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

v3.19.3.a.u2
Derivative Instruments and Hedging Activities (Schedule of Outstanding Oil and Natural Gas Derivative Contracts) (Details) - Forecast - Not Designated as Hedging Instrument
 12 Months Ended
Dec. 31, 2021
MMBTU
$ / bbl
$ / MMBTU
bbl
Dec. 31, 2020
MMBTU
$ / bbl
$ / MMBTU
bbl
Commodity - Oil | Swap contracts    
Derivative [Line Items]    
Total volume (Bbls) | bbl 0 1,303,900
Weighted average price (in dollars per share) 0 55.19
Commodity - Oil | Short    
Derivative [Line Items]    
Total volume (Bbls) | bbl 4,825,300 1,674,450
Weighted average price (in dollars per share) 63.62 75.98
Commodity - Oil | Short | Swap contracts    
Derivative [Line Items]    
Total volume (Bbls) | bbl 0 2,196,000
Weighted average price (in dollars per share) 0 56.06
Commodity - Oil | Put option | Short | Swap contracts    
Derivative [Line Items]    
Weighted average price (in dollars per share) | $ / bbl 0 42.50
Commodity - Oil | Collar contracts with short puts (WTI, three-way collars)    
Derivative [Line Items]    
Total volume (Bbls) | bbl 0 13,176,000
Commodity - Oil | Collar contracts with short puts (WTI, three-way collars) | Call option | Short    
Derivative [Line Items]    
Weighted average price (in dollars per share) | $ / bbl 0 65.28
Commodity - Oil | Collar contracts with short puts (WTI, three-way collars) | Put option | Short    
Derivative [Line Items]    
Weighted average price (in dollars per share) | $ / bbl 0 45.08
Commodity - Oil | Collar contracts with short puts (WTI, three-way collars) | Put option | Long    
Derivative [Line Items]    
Weighted average price (in dollars per share) | $ / bbl 0 55.38
Commodity - Oil | Collar contracts with short puts (Brent ICE, three-way collars)    
Derivative [Line Items]    
Total volume (Bbls) | bbl 0 837,500
Commodity - Oil | Collar contracts with short puts (Brent ICE, three-way collars) | Call option | Short    
Derivative [Line Items]    
Weighted average price (in dollars per share) | $ / bbl 0 70.00
Commodity - Oil | Collar contracts with short puts (Brent ICE, three-way collars) | Put option | Short    
Derivative [Line Items]    
Weighted average price (in dollars per share) | $ / bbl 0 50.00
Commodity - Oil | Collar contracts with short puts (Brent ICE, three-way collars) | Put option | Long    
Derivative [Line Items]    
Weighted average price (in dollars per share) | $ / bbl 0 58.24
Commodity - Oil | Oil contracts (Midland basis differential)    
Derivative [Line Items]    
Total volume (Bbls) | bbl 4,015,100 8,476,700
Weighted average price (in dollars per share) | $ / bbl 0.40  
Weighted average price (in dollars per share) | $ / bbl   (1.47)
Commodity - Oil | Oil contracts (Argus Houston MEH basis differential)    
Derivative [Line Items]    
Total volume (Bbls) | bbl 0 1,439,205
Weighted average price (in dollars per share) 0 2.40
Commodity - Oil | Oil contracts (Argus Houston MEH swaps)    
Derivative [Line Items]    
Total volume (Bbls) | bbl 0 504,500
Weighted average price (in dollars per share) 0 58.22
Commodity - Natural gas | Swap contracts    
Derivative [Line Items]    
Weighted average price (in dollars per share) 0 2.48
Total volume (MMBtu) | MMBTU 0 3,660,000
Commodity - Natural gas | Call option | Swap contracts    
Derivative [Line Items]    
Weighted average price (in dollars per share) 3.09 3.50
Total volume (MMBtu) | MMBTU 7,300,000 12,078,000
Commodity - Natural gas | Collar contracts (two-way collars)    
Derivative [Line Items]    
Total volume (MMBtu) | MMBTU 0 3,660,000
Commodity - Natural gas | Collar contracts (two-way collars) | Long    
Derivative [Line Items]    
Weighted average price (in dollars per share) 0 2.50
Commodity - Natural gas | Collar contracts (two-way collars) | Call option | Short    
Derivative [Line Items]    
Weighted average price (in dollars per share) 0 2.75
Commodity - Natural gas | Collar contracts (two-way collars) | Put option | Short    
Derivative [Line Items]    
Weighted average price (in dollars per share) 0 2.00
Commodity - Natural gas | Waha basis differential | Swap contracts    
Derivative [Line Items]    
Total volume (MMBtu) | MMBTU 0 21,596,000
Weighted average price (in dollars per share) 0 (1.04)